Browse Source

Merge from libretro/master:46902e0 for repo synchronization

kub 3 years ago
parent
commit
61d76999d7
74 changed files with 14043 additions and 2094 deletions
  1. 9 2
      .gitignore
  2. 1 1
      .gitmodules
  3. 26 2
      Makefile
  4. 322 10
      Makefile.libretro
  5. 3 0
      cpu/musashi/m68kmake.c
  6. 18 10
      cpu/sh2/compiler.c
  7. 69 80
      jni/Android.mk
  8. 3 3
      pico/32x/memory.c
  9. 3 0
      pico/cart.c
  10. 4 0
      pico/cd/cd_image.c
  11. 9 3
      pico/cd/cue.c
  12. 2 2
      pico/draw.c
  13. 1 1
      pico/mode4.c
  14. 4 0
      pico/patch.c
  15. 2 0
      pico/pico.h
  16. 4 0
      pico/sek.c
  17. 80 0
      pico/sound/sound.c
  18. 4 0
      pico/state.c
  19. 1 1
      platform/common/common.mak
  20. 4 0
      platform/common/config_file.c
  21. 4 0
      platform/common/emu.c
  22. 3 0
      platform/common/main.c
  23. 1 1
      platform/libpicofe
  24. 30 3
      platform/libretro/3ds/3ds_utils.c
  25. 1 0
      platform/libretro/3ds/3ds_utils.h
  26. 25 0
      platform/libretro/3ds/utils.S
  27. 104 0
      platform/libretro/libretro-common/compat/compat_posix_string.c
  28. 69 0
      platform/libretro/libretro-common/compat/compat_strl.c
  29. 58 0
      platform/libretro/libretro-common/compat/fopen_utf8.c
  30. 510 0
      platform/libretro/libretro-common/encodings/encoding_utf.c
  31. 39 0
      platform/libretro/libretro-common/include/boolean.h
  32. 84 0
      platform/libretro/libretro-common/include/compat/apple_compat.h
  33. 30 0
      platform/libretro/libretro-common/include/compat/fnmatch.h
  34. 34 0
      platform/libretro/libretro-common/include/compat/fopen_utf8.h
  35. 74 0
      platform/libretro/libretro-common/include/compat/getopt.h
  36. 53 0
      platform/libretro/libretro-common/include/compat/ifaddrs.h
  37. 85 0
      platform/libretro/libretro-common/include/compat/intrinsics.h
  38. 131 0
      platform/libretro/libretro-common/include/compat/msvc.h
  39. 255 0
      platform/libretro/libretro-common/include/compat/msvc/stdint.h
  40. 64 0
      platform/libretro/libretro-common/include/compat/posix_string.h
  41. 52 0
      platform/libretro/libretro-common/include/compat/strcasestr.h
  42. 59 0
      platform/libretro/libretro-common/include/compat/strl.h
  43. 67 0
      platform/libretro/libretro-common/include/encodings/utf.h
  44. 531 0
      platform/libretro/libretro-common/include/file/file_path.h
  45. 3089 0
      platform/libretro/libretro-common/include/libretro.h
  46. 66 0
      platform/libretro/libretro-common/include/libretro_gskit_ps2.h
  47. 52 0
      platform/libretro/libretro-common/include/memmap.h
  48. 36 0
      platform/libretro/libretro-common/include/retro_common.h
  49. 119 0
      platform/libretro/libretro-common/include/retro_common_api.h
  50. 78 0
      platform/libretro/libretro-common/include/retro_dirent.h
  51. 258 0
      platform/libretro/libretro-common/include/retro_endianness.h
  52. 114 0
      platform/libretro/libretro-common/include/retro_environment.h
  53. 39 0
      platform/libretro/libretro-common/include/retro_inline.h
  54. 182 0
      platform/libretro/libretro-common/include/retro_miscellaneous.h
  55. 115 0
      platform/libretro/libretro-common/include/streams/file_stream.h
  56. 101 0
      platform/libretro/libretro-common/include/streams/file_stream_transforms.h
  57. 151 0
      platform/libretro/libretro-common/include/string/stdstring.h
  58. 111 0
      platform/libretro/libretro-common/include/vfs/vfs.h
  59. 76 0
      platform/libretro/libretro-common/include/vfs/vfs_implementation.h
  60. 620 0
      platform/libretro/libretro-common/streams/file_stream.c
  61. 159 0
      platform/libretro/libretro-common/streams/file_stream_transforms.c
  62. 384 0
      platform/libretro/libretro-common/string/stdstring.c
  63. 1340 0
      platform/libretro/libretro-common/vfs/vfs_implementation.c
  64. 452 47
      platform/libretro/libretro.c
  65. 0 1926
      platform/libretro/libretro.h
  66. 461 0
      platform/libretro/libretro_core_options.h
  67. 198 0
      platform/libretro/libretro_core_options_intl.h
  68. 5 0
      platform/libretro/link.T
  69. 1799 0
      platform/ps2/Draw_mips_r5900.s
  70. 847 0
      platform/ps2/Memory_mips_r5900.s
  71. 3 0
      platform/ps2/asm.h
  72. 129 0
      platform/ps2/asm.s
  73. 125 0
      platform/switch/mman.h
  74. 2 2
      tools/mkoffsets.sh

+ 9 - 2
.gitignore

@@ -1,8 +1,16 @@
 *.o
 *.swp
+*.dll
+*.lib
+*.pdb
+*.manifest
+*.map
+*.exp
+*.dylib
+*.so
+*.a
 tags
 cscope.out
-PicoDrive.map
 config.mak
 config.log
 cpu/musashi/m68kmake
@@ -22,4 +30,3 @@ PicoDrive.opk
 pico_int_offs.h
 amalgamate
 textfilter
-

+ 1 - 1
.gitmodules

@@ -1,6 +1,6 @@
 [submodule "platform/libpicofe"]
 	path = platform/libpicofe
-	url = https://github.com/irixxxx/libpicofe.git
+	url = https://github.com/notaz/libpicofe.git
 [submodule "cpu/cyclone"]
 	path = cpu/cyclone
 	url = https://github.com/notaz/cyclone68000.git

+ 26 - 2
Makefile

@@ -1,6 +1,9 @@
+$(LD) ?= $(CC)
 TARGET ?= PicoDrive
 DEBUG ?= 0
 CFLAGS += -I.
+CYCLONE_CC ?= gcc
+CYCLONE_CXX ?= g++
 
 all: config.mak target_
 
@@ -38,6 +41,9 @@ endif
 ifeq "$(DEBUG)" "0"
 	CFLAGS += -O3 -DNDEBUG
 endif
+	LD = $(CC)
+	OBJOUT ?= -o
+	LINKOUT ?= -o
 endif
 
 ifeq ("$(PLATFORM)",$(filter "$(PLATFORM)","gp2x" "opendingux" "rpi1"))
@@ -153,6 +159,15 @@ HAVE_ARMv6 = 0
 endif
 ifeq "$(PLATFORM)" "libretro"
 OBJS += platform/libretro/libretro.o
+ifeq "$(USE_LIBRETRO_VFS)" "1"
+OBJS += platform/libretro/libretro-common/compat/compat_posix_string.o
+OBJS += platform/libretro/libretro-common/compat/compat_strl.o
+OBJS += platform/libretro/libretro-common/compat/fopen_utf8.o
+OBJS += platform/libretro/libretro-common/encodings/encoding_utf.o
+OBJS += platform/libretro/libretro-common/streams/file_stream.o
+OBJS += platform/libretro/libretro-common/streams/file_stream_transforms.o
+OBJS += platform/libretro/libretro-common/vfs/vfs_implementation.o
+endif
 PLATFORM_ZLIB = 1
 endif
 
@@ -217,9 +232,10 @@ CFLAGS += -DUSE_SDL
 endif
 
 ifneq ($(findstring gcc,$(CC)),)
+ifneq ($(findstring SunOS,$(shell uname -a)),SunOS)
 LDFLAGS += -Wl,-Map=$(TARGET).map
 endif
-
+endif
 
 target_: $(TARGET)
 
@@ -228,10 +244,11 @@ clean:
 	$(RM) -r .opk_data
 
 $(TARGET): $(OBJS)
+
 ifeq ($(STATIC_LINKING), 1)
 	$(AR) rcs $@ $^
 else
-	$(CC) -o $@ $(CFLAGS) $^ $(LDFLAGS) $(LDLIBS)
+	$(LD) $(LINKOUT)$@ $^ $(LDFLAGS) $(LDLIBS)
 endif
 
 pprof: platform/linux/pprof.c
@@ -240,6 +257,9 @@ pprof: platform/linux/pprof.c
 pico/pico_int_offs.h: tools/mkoffsets.sh
 	make -C tools/ XCC="$(CC)" XCFLAGS="$(CFLAGS)" XPLATFORM="$(platform)"
 
+%.o: %.c
+	$(CC) -c $(OBJOUT)$@ $< $(CFLAGS)
+
 .s.o:
 	$(CC) $(CFLAGS) -c $< -o $@
 
@@ -269,7 +289,11 @@ endif
 # not using O3 and -fno-expensive-optimizations seems to also help, but you may
 # want to remove this stuff for better performance if your compiler can handle it
 ifeq "$(DEBUG)" "0"
+ifeq (,$(findstring msvc,$(platform)))
 cpu/fame/famec.o: CFLAGS += -g0 -O2 -fno-expensive-optimizations
+else
+cpu/fame/famec.o: CFLAGS += -Od
+endif
 endif
 
 pico/carthw_cfg.c: pico/carthw.cfg

+ 322 - 10
Makefile.libretro

@@ -1,5 +1,12 @@
 # Makefile for PicoDrive (libretro)
 
+SPACE :=
+SPACE := $(SPACE) $(SPACE)
+BACKSLASH :=
+BACKSLASH := \$(BACKSLASH)
+filter_out1 = $(filter-out $(firstword $1),$1)
+filter_out2 = $(call filter_out1,$(call filter_out1,$1))
+
 ifeq ($(platform),)
 	platform = unix
 	ifeq ($(shell uname -a),)
@@ -19,6 +26,14 @@ AS ?= as
 CC_AS ?= $(CC)
 CFLAGS ?=
 
+#libretro includes
+CFLAGS += -I platform/libretro/libretro-common/include
+CFLAGS += -I platform/libretro/libretro-common/include/compat
+CFLAGS += -I platform/libretro/libretro-common/include/encodings
+CFLAGS += -I platform/libretro/libretro-common/include/streams
+CFLAGS += -I platform/libretro/libretro-common/include/string
+CFLAGS += -I platform/libretro/libretro-common/include/vfs
+
 STATIC_LINKING:= 0
 TARGET_NAME := picodrive
 LIBM := -lm
@@ -41,6 +56,9 @@ ifeq ($(platform), unix)
 	SHARED := -shared
 	DONT_COMPILE_IN_ZLIB = 1
 	CFLAGS += -DFAMEC_NO_GOTOS
+ifneq ($(findstring SunOS,$(shell uname -a)),)
+	CC=gcc
+endif
 
 # Portable Linux
 else ifeq ($(platform), linux-portable)
@@ -60,6 +78,7 @@ else ifeq ($(platform), osx)
 	fpic := -fPIC
 	APPLE := 1
 	ifeq ($(shell uname -p),powerpc)
+		CFLAGS += -DHAVE_NO_LANGEXTRA
 		CFLAGS += -DBLARGG_BIG_ENDIAN=1 -D__ppc__ -DFAMEC_NO_GOTOS
 	endif
 	OSXVER = `sw_vers -productVersion | cut -d. -f 2`
@@ -94,14 +113,21 @@ else ifneq (,$(findstring ios,$(platform)))
 	ifeq ($(IOSSDK),)
 		IOSSDK := $(shell xcodebuild -version -sdk iphoneos Path)
 	endif
-	CC = clang -arch armv7 -isysroot $(IOSSDK)
-	CXX = clang++ -arch armv7 -isysroot $(IOSSDK)
-	CC_AS = perl ./tools/gas-preprocessor.pl $(CC)
-	CFLAGS += -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon -marm 
-	ASFLAGS += -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon
+	ifeq ($(platform),ios-arm64)
+	  CC = clang -arch arm64 -isysroot $(IOSSDK)
+	  CXX = clang++ -arch arm64 -isysroot $(IOSSDK)
+	  CFLAGS += -marm -DARM -D__aarch64__=1 
+	else
+	  CC = clang -arch armv7 -isysroot $(IOSSDK)
+	  CXX = clang++ -arch armv7 -isysroot $(IOSSDK)
+	  CC_AS = perl ./tools/gas-preprocessor.pl $(CC)
+	  CFLAGS += -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon -marm 
+	  ASFLAGS += -mcpu=cortex-a8 -mtune=cortex-a8 -mfpu=neon
+	  NO_ARM_ASM = 1
+	endif
 	CFLAGS += -DIOS
 
-ifeq ($(platform),ios9)
+ifeq ($(platform),$(filter $(platform),ios9 ios-arm64))
 	CC     += -miphoneos-version-min=8.0
 	CXX    += -miphoneos-version-min=8.0
 	CC_AS  += -miphoneos-version-min=8.0
@@ -113,6 +139,21 @@ else
 	CFLAGS += -miphoneos-version-min=5.0
 endif
 
+# tvOS
+else ifeq ($(platform), tvos-arm64)
+	TARGET := $(TARGET_NAME)_libretro_tvos.dylib
+	SHARED := -dynamiclib
+	fpic := -fPIC
+	APPLE := 1
+	ifeq ($(IOSSDK),)
+		IOSSDK := $(shell xcodebuild -version -sdk appletvos Path)
+	endif
+	CC_AS = perl ./tools/gas-preprocessor.pl $(CC)
+	CC = clang -arch arm64 -isysroot $(IOSSDK)
+	CXX = clang++ -arch arm64 -isysroot $(IOSSDK)
+	CFLAGS += -marm -DARM -D__aarch64__=1 
+	CFLAGS += -DIOS
+
 # PS3
 else ifeq ($(platform), ps3)
 	TARGET := $(TARGET_NAME)_libretro_$(platform).a
@@ -143,7 +184,7 @@ else ifeq ($(platform), psl1ght)
 	STATIC_LINKING = 1
 	NO_MMAP = 1
 	DONT_COMPILE_IN_ZLIB = 1
-	
+
 # PSP
 else ifeq ($(platform), psp1)
 	TARGET := $(TARGET_NAME)_libretro_$(platform).a
@@ -157,6 +198,21 @@ else ifeq ($(platform), psp1)
 
 	asm_render = 1
 
+# PS2
+else ifeq ($(platform), ps2)
+	TARGET := $(TARGET_NAME)_libretro_$(platform).a
+	CC = ee-gcc$(EXE_EXT)
+	AR = ee-ar$(EXE_EXT)
+	CFLAGS += -Wall -DPS2 -DUSE_BGR555 -DFAMEC_NO_GOTOS -DRENDER_GSKIT_PS2 -fsingle-precision-constant
+	CFLAGS += -I$(PS2DEV)/gsKit/include -I$(PS2SDK)/ee/include -I$(PS2SDK)/common/include
+	CFLAGS += -DHAVE_NO_LANGEXTRA
+	STATIC_LINKING = 1
+	NO_MMAP = 1
+	DONT_COMPILE_IN_ZLIB = 1
+
+	asm_render = 1
+	OBJS += platform/ps2/asm.o
+
 # CTR (3DS)
 else ifeq ($(platform), ctr)
 	TARGET := $(TARGET_NAME)_libretro_$(platform).a
@@ -171,7 +227,7 @@ else ifeq ($(platform), ctr)
 	NO_MMAP = 1
 	DONT_COMPILE_IN_ZLIB = 1
 
-	OBJS +=platform/libretro/3ds/3ds_utils.o
+	OBJS += platform/libretro/3ds/3ds_utils.o platform/libretro/3ds/utils.o
 
 # Raspberry Pi (original model) Raspbian
 else ifeq ($(platform), raspberrypi)
@@ -219,6 +275,33 @@ else ifeq ($(platform), wii)
 	AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
 	CFLAGS += -DGEKKO -DHW_RVL -mrvl -mcpu=750 -meabi -mhard-float -DBLARGG_BIG_ENDIAN=1 -D__ppc__
 
+# Nintendo Wii U
+else ifeq ($(platform), wiiu)
+	TARGET := $(TARGET_NAME)_libretro_$(platform).a
+	CC = $(DEVKITPPC)/bin/powerpc-eabi-gcc$(EXE_EXT)
+	CXX = $(DEVKITPPC)/bin/powerpc-eabi-g++$(EXE_EXT)
+	AR = $(DEVKITPPC)/bin/powerpc-eabi-ar$(EXE_EXT)
+	COMMONFLAGS += -DGEKKO -DWIIU -DHW_RVL -mwup -mcpu=750 -meabi -mhard-float -D__POWERPC__ -D__ppc__ -DMSB_FIRST -DWORDS_BIGENDIAN=1 -I./deps/include/
+	COMMONFLAGS += -U__INT32_TYPE__ -U __UINT32_TYPE__ -D__INT32_TYPE__=int
+
+# Nintendo Switch (libtransistor)
+else ifeq ($(platform), switch)
+	TARGET := $(TARGET_NAME)_libretro_$(platform).a
+	include $(LIBTRANSISTOR_HOME)/libtransistor.mk
+	STATIC_LINKING=1
+	NO_MMAP = 1
+
+# Nintendo Switch (libnx)
+else ifeq ($(platform), libnx)
+	include $(DEVKITPRO)/libnx/switch_rules
+	TARGET := $(TARGET_NAME)_libretro_$(platform).a
+	CFLAGS += -O3 -fomit-frame-pointer -ffast-math -I$(DEVKITPRO)/libnx/include/ -fPIE -Wl,--allow-multiple-definition
+	CFLAGS += -specs=$(DEVKITPRO)/libnx/switch.specs
+	CFLAGS += -D__SWITCH__ -DHAVE_LIBNX
+	CFLAGS += -DARM -D__aarch64__=1 -march=armv8-a -mtune=cortex-a57 -mtp=soft -ffast-math -mcpu=cortex-a57+crc+fp+simd -ffunction-sections
+	CFLAGS += -Ifrontend/switch -ftree-vectorize
+	STATIC_LINKING=1
+
 # QNX
 else ifeq ($(platform), qnx)
 	TARGET := $(TARGET_NAME)_libretro_$(platform).so
@@ -229,6 +312,78 @@ else ifeq ($(platform), qnx)
 	ASFLAGS +=  -mcpu=cortex-a9 -mfpu=neon -mfloat-abi=softfp
 	ARCH = arm
 
+# (armv7 a7, hard point, neon based) ### 
+# NESC, SNESC, C64 mini 
+else ifeq ($(platform), classic_armv7_a7)
+	TARGET := $(TARGET_NAME)_libretro.so
+	fpic := -fPIC
+	SHARED := -shared -Wl,--no-undefined,-Bsymbolic
+	CFLAGS += -Ofast \
+	-flto=4 -fwhole-program -fuse-linker-plugin \
+	-fdata-sections -ffunction-sections -Wl,--gc-sections \
+	-fno-stack-protector -fno-ident -fomit-frame-pointer \
+	-falign-functions=1 -falign-jumps=1 -falign-loops=1 \
+	-fno-unwind-tables -fno-asynchronous-unwind-tables -fno-unroll-loops \
+	-fmerge-all-constants -fno-math-errno \
+	-marm -mtune=cortex-a7 -mfpu=neon-vfpv4 -mfloat-abi=hard
+	CXXFLAGS += $(CFLAGS)
+	CPPFLAGS += $(CFLAGS)
+	ASFLAGS += $(CFLAGS)
+	HAVE_NEON = 1
+	BUILTIN_GPU = neon
+	ifeq ($(shell echo `$(CC) -dumpversion` "< 4.9" | bc -l), 1)
+	  CFLAGS += -march=armv7-a
+	else
+	  CFLAGS += -march=armv7ve
+	  # If gcc is 5.0 or later
+	  ifeq ($(shell echo `$(CC) -dumpversion` ">= 5" | bc -l), 1)
+	    LDFLAGS += -static-libgcc -static-libstdc++
+	  endif
+	endif
+
+# (armv8 a35, hard point, neon based) ###
+# Playstation Classic
+else ifeq ($(platform), classic_armv8_a35)
+	TARGET := $(TARGET_NAME)_libretro.so
+	fpic := -fPIC
+	SHARED := -shared -Wl,--no-undefined,-Bsymbolic
+	CFLAGS += -Ofast \
+		-flto -fwhole-program -fuse-linker-plugin \
+		-fdata-sections -ffunction-sections -Wl,--gc-sections \
+		-fno-stack-protector -fno-ident -fomit-frame-pointer \
+		-falign-functions=1 -falign-jumps=1 -falign-loops=1 \
+		-fno-unwind-tables -fno-asynchronous-unwind-tables -fno-unroll-loops \
+		-fmerge-all-constants -fno-math-errno -fno-strict-aliasing \
+		-marm -mtune=cortex-a35 -mfpu=neon-fp-armv8 -mfloat-abi=hard
+	CXXFLAGS += $(CFLAGS)
+	CPPFLAGS += $(CFLAGS)
+	ASFLAGS += $(CFLAGS)
+	HAVE_NEON = 1
+	BUILTIN_GPU = neon
+	CFLAGS += -march=armv8-a
+	LDFLAGS += -static-libgcc -static-libstdc++
+
+#######################################
+
+# ARM-64
+else ifeq ($(platform), arm64)
+	EXT ?= so
+	TARGET := $(TARGET_NAME)_libretro.$(EXT)
+	ARCH = aarch64
+	fpic := -fPIC
+	SHARED := -shared
+	DONT_COMPILE_IN_ZLIB = 1
+	CFLAGS += -DFAMEC_NO_GOTOS
+
+# AARCH64 generic
+else ifeq ($(platform), aarch64)
+	TARGET := $(TARGET_NAME)_libretro.so
+	ARCH = aarch64
+	fpic := -fPIC
+	SHARED := -shared
+	DONT_COMPILE_IN_ZLIB = 1
+	CFLAGS += -DFAMEC_NO_GOTOS
+
 # ARM
 else ifneq (,$(findstring armv,$(platform)))
 	TARGET := $(TARGET_NAME)_libretro.so
@@ -279,7 +434,105 @@ else ifeq ($(platform), gcw0)
 	fpic := -fPIC
 	LIBM :=
 	DONT_COMPILE_IN_ZLIB = 1
-	CFLAGS += -ffast-math -march=mips32 -mtune=mips32r2 -mhard-float
+	CFLAGS += -fomit-frame-pointer -ffast-math -march=mips32 -mtune=mips32r2 -mhard-float
+
+# Windows MSVC 2017 all architectures
+else ifneq (,$(findstring windows_msvc2017,$(platform)))
+	NO_GCC := 1
+
+	PlatformSuffix = $(subst windows_msvc2017_,,$(platform))
+	ifneq (,$(findstring desktop,$(PlatformSuffix)))
+		WinPartition = desktop
+		MSVC2017CompileFlags = -DWINAPI_FAMILY=WINAPI_FAMILY_DESKTOP_APP -FS
+		LDFLAGS += -MANIFEST -LTCG:incremental -NXCOMPAT -DYNAMICBASE -DEBUG -OPT:REF -INCREMENTAL:NO -SUBSYSTEM:WINDOWS -MANIFESTUAC:"level='asInvoker' uiAccess='false'" -OPT:ICF -ERRORREPORT:PROMPT -NOLOGO -TLBID:1
+		LDLIBS += kernel32.lib user32.lib gdi32.lib winspool.lib comdlg32.lib advapi32.lib
+	else ifneq (,$(findstring uwp,$(PlatformSuffix)))
+		WinPartition = uwp
+		MSVC2017CompileFlags = -DWINAPI_FAMILY=WINAPI_FAMILY_APP -D_WINDLL -D_UNICODE -DUNICODE -D__WRL_NO_DEFAULT_LIB__ -EHsc -FS
+		LDFLAGS += -APPCONTAINER -NXCOMPAT -DYNAMICBASE -MANIFEST:NO -LTCG -OPT:REF -SUBSYSTEM:CONSOLE -MANIFESTUAC:NO -OPT:ICF -ERRORREPORT:PROMPT -NOLOGO -TLBID:1 -DEBUG:FULL -WINMD:NO
+		LDLIBS += WindowsApp.lib
+	endif
+
+	ARCH = x86_64
+	SHARED :=
+	LIBM :=
+	USE_LIBRETRO_VFS = 1
+	NO_ALIGN_FUNCTIONS = 1
+
+	CFLAGS += -DHAVE_VSNPRINTF
+	CFLAGS += $(MSVC2017CompileFlags)
+	CXXFLAGS += $(MSVC2017CompileFlags)
+
+	TargetArchMoniker = $(subst $(WinPartition)_,,$(PlatformSuffix))
+
+	CC  = cl.exe
+	CXX = cl.exe
+	LD = link.exe
+
+	reg_query = $(call filter_out2,$(subst $2,,$(shell reg query "$2" -v "$1" 2>nul)))
+	fix_path = $(subst $(SPACE),\ ,$(subst \,/,$1))
+
+	ProgramFiles86w := $(shell cmd //c "echo %PROGRAMFILES(x86)%")
+	ProgramFiles86 := $(shell cygpath "$(ProgramFiles86w)")
+
+	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Microsoft SDKs\Windows\v10.0)
+	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_CURRENT_USER\SOFTWARE\Wow6432Node\Microsoft\Microsoft SDKs\Windows\v10.0)
+	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0)
+	WindowsSdkDir ?= $(call reg_query,InstallationFolder,HKEY_CURRENT_USER\SOFTWARE\Microsoft\Microsoft SDKs\Windows\v10.0)
+	WindowsSdkDir := $(WindowsSdkDir)
+
+	WindowsSDKVersion ?= $(firstword $(foreach folder,$(subst $(subst \,/,$(WindowsSdkDir)Include/),,$(wildcard $(call fix_path,$(WindowsSdkDir)Include\*))),$(if $(wildcard $(call fix_path,$(WindowsSdkDir)Include/$(folder)/um/Windows.h)),$(folder),)))$(BACKSLASH)
+	WindowsSDKVersion := $(WindowsSDKVersion)
+
+	VsInstallBuildTools = $(ProgramFiles86)/Microsoft Visual Studio/2017/BuildTools
+	VsInstallEnterprise = $(ProgramFiles86)/Microsoft Visual Studio/2017/Enterprise
+	VsInstallProfessional = $(ProgramFiles86)/Microsoft Visual Studio/2017/Professional
+	VsInstallCommunity = $(ProgramFiles86)/Microsoft Visual Studio/2017/Community
+
+	VsInstallRoot ?= $(shell if [ -d "$(VsInstallBuildTools)" ]; then echo "$(VsInstallBuildTools)"; fi)
+	ifeq ($(VsInstallRoot), )
+		VsInstallRoot = $(shell if [ -d "$(VsInstallEnterprise)" ]; then echo "$(VsInstallEnterprise)"; fi)
+	endif
+	ifeq ($(VsInstallRoot), )
+		VsInstallRoot = $(shell if [ -d "$(VsInstallProfessional)" ]; then echo "$(VsInstallProfessional)"; fi)
+	endif
+	ifeq ($(VsInstallRoot), )
+		VsInstallRoot = $(shell if [ -d "$(VsInstallCommunity)" ]; then echo "$(VsInstallCommunity)"; fi)
+	endif
+	VsInstallRoot := $(VsInstallRoot)
+
+	VcCompilerToolsVer := $(shell cat "$(VsInstallRoot)/VC/Auxiliary/Build/Microsoft.VCToolsVersion.default.txt" | grep -o '[0-9\.]*')
+	VcCompilerToolsDir := $(VsInstallRoot)/VC/Tools/MSVC/$(VcCompilerToolsVer)
+
+	WindowsSDKSharedIncludeDir := $(shell cygpath -w "$(WindowsSdkDir)\Include\$(WindowsSDKVersion)\shared")
+	WindowsSDKUCRTIncludeDir := $(shell cygpath -w "$(WindowsSdkDir)\Include\$(WindowsSDKVersion)\ucrt")
+	WindowsSDKUMIncludeDir := $(shell cygpath -w "$(WindowsSdkDir)\Include\$(WindowsSDKVersion)\um")
+	WindowsSDKUCRTLibDir := $(shell cygpath -w "$(WindowsSdkDir)\Lib\$(WindowsSDKVersion)\ucrt\$(TargetArchMoniker)")
+	WindowsSDKUMLibDir := $(shell cygpath -w "$(WindowsSdkDir)\Lib\$(WindowsSDKVersion)\um\$(TargetArchMoniker)")
+
+	# For some reason the HostX86 compiler doesn't like compiling for x64
+	# ("no such file" opening a shared library), and vice-versa.
+	# Work around it for now by using the strictly x86 compiler for x86, and x64 for x64.
+	# NOTE: What about ARM?
+	ifneq (,$(findstring x64,$(TargetArchMoniker)))
+		VCCompilerToolsBinDir := $(VcCompilerToolsDir)\bin\HostX64
+	else
+		VCCompilerToolsBinDir := $(VcCompilerToolsDir)\bin\HostX86
+	endif
+
+	PATH := $(shell IFS=$$'\n'; cygpath "$(VCCompilerToolsBinDir)/$(TargetArchMoniker)"):$(PATH)
+	PATH := $(PATH):$(shell IFS=$$'\n'; cygpath "$(VsInstallRoot)/Common7/IDE")
+	INCLUDE := $(shell IFS=$$'\n'; cygpath -w "$(VcCompilerToolsDir)/include")
+	LIB := $(shell IFS=$$'\n'; cygpath -w "$(VcCompilerToolsDir)/lib/$(TargetArchMoniker)")
+	ifneq (,$(findstring uwp,$(PlatformSuffix)))
+		LIB := $(shell IFS=$$'\n'; cygpath -w "$(LIB)/store")
+	endif
+
+	export INCLUDE := $(INCLUDE);$(WindowsSDKSharedIncludeDir);$(WindowsSDKUCRTIncludeDir);$(WindowsSDKUMIncludeDir)
+	export LIB := $(LIB);$(WindowsSDKUCRTLibDir);$(WindowsSDKUMLibDir)
+	TARGET := $(TARGET_NAME)_libretro.dll
+	PSS_STYLE :=2
+	LDFLAGS += -DLL
 
 # Windows
 else
@@ -291,7 +544,12 @@ else
 
 endif
 
-CFLAGS += -DNO_ZLIB
+CFLAGS += -DNO_ZLIB -D__LIBRETRO__
+
+ifeq ($(USE_LIBRETRO_VFS),1)
+	NO_MMAP = 1
+	CFLAGS += -DUSE_LIBRETRO_VFS
+endif
 
 ifeq ($(NO_MMAP),1)
 	CFLAGS += -DNO_MMAP
@@ -329,4 +587,58 @@ endif
 PLATFORM = libretro
 NO_CONFIG_MAK = yes
 
+OBJOUT   = -o
+LINKOUT  = -o 
+
+ifneq (,$(findstring msvc,$(platform)))
+	CFLAGS += -wd4702 -wd4711 -wd4202 -wd4101
+endif
+
+ifeq ($(DEBUG), 1)
+	ifneq (,$(findstring msvc,$(platform)))
+		ifeq ($(STATIC_LINKING),1)
+			CFLAGS += -MTd
+			CXXFLAGS += -MTd
+		else
+			CFLAGS += -MDd
+			CXXFLAGS += -MDd
+		endif
+
+		CFLAGS += -Od -Zi -DDEBUG -D_DEBUG
+		CXXFLAGS += -Od -Zi -DDEBUG -D_DEBUG
+	else
+		CFLAGS += -O0 -g -DDEBUG
+		CXXFLAGS += -O0 -g -DDEBUG
+	endif
+else
+	ifneq (,$(findstring msvc,$(platform)))
+		ifeq ($(STATIC_LINKING),1)
+			CFLAGS += -MT
+			CXXFLAGS += -MT
+		else
+			CFLAGS += -MD
+			CXXFLAGS += -MD
+		endif
+
+		CFLAGS += -O2 -DNDEBUG
+		CXXFLAGS += -O2 -DNDEBUG
+	else
+		CFLAGS += -O3 -DNDEBUG
+		CXXFLAGS += -O3 -DNDEBUG
+	endif
+endif
+
+ifneq (,$(findstring msvc,$(platform)))
+	OBJOUT = -Fo
+	LINKOUT = -out:
+ifeq ($(STATIC_LINKING),1)
+	LD ?= lib.exe
+	STATIC_LINKING=0
+else
+	LD = link.exe
+endif
+else
+	LD = $(CC)
+endif
+
 include Makefile

+ 3 - 0
cpu/musashi/m68kmake.c

@@ -122,6 +122,9 @@ static const char* g_version = "3.31";
 #endif /* DECL_SPEC */
 
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
 
 /* ======================================================================== */
 /* ============================== PROTOTYPES ============================== */

+ 18 - 10
cpu/sh2/compiler.c

@@ -458,9 +458,9 @@ static void rcache_free_tmp(int hr);
 // SR must and R0 should by all means be statically mapped.
 // XXX the static definition of SR MUST match that in compiler.h
 
-#ifdef __arm__
+#if defined(__arm__) || defined(_M_ARM)
 #include "../drc/emit_arm.c"
-#elif defined(__aarch64__)
+#elif defined(__aarch64__) || defined(_M_ARM64)
 #include "../drc/emit_arm64.c"
 #elif defined(__mips__)
 #include "../drc/emit_mips.c"
@@ -468,9 +468,9 @@ static void rcache_free_tmp(int hr);
 #include "../drc/emit_riscv.c"
 #elif defined(__powerpc__)
 #include "../drc/emit_ppc.c"
-#elif defined(__i386__)
+#elif defined(__i386__) || defined(_M_X86)
 #include "../drc/emit_x86.c"
-#elif defined(__x86_64__)
+#elif defined(__x86_64__) || defined(_M_X64)
 #include "../drc/emit_x86.c"
 #else
 #error unsupported arch
@@ -811,7 +811,7 @@ static void dr_block_link(struct block_entry *be, struct block_link *bl, int emi
         // via blx: @jump near jumpcc to blx; @blx far jump
         emith_jump_patch(jump, bl->blx, &jump);
         emith_jump_at(bl->blx, be->tcache_ptr);
-        host_instructions_updated(bl->blx, bl->blx + emith_jump_at_size(),
+        host_instructions_updated(bl->blx, (char *)bl->blx + emith_jump_at_size(),
             ((uintptr_t)bl->blx & 0x1f) + emith_jump_at_size()-1 > 0x1f);
       }
     } else {
@@ -849,7 +849,7 @@ static void dr_block_unlink(struct block_link *bl, int emit_jump)
         // via blx: @jump near jumpcc to blx; @blx load target_pc, far jump
         emith_jump_patch(bl->jump, bl->blx, &jump);
         memcpy(bl->blx, bl->jdisp, emith_jump_at_size());
-        host_instructions_updated(bl->blx, bl->blx + emith_jump_at_size(), 1);
+        host_instructions_updated(bl->blx, (char *)bl->blx + emith_jump_at_size(), 1);
       } else {
         printf("unknown BL type %d\n", bl->type);
         exit(1);
@@ -4620,7 +4620,15 @@ static void REGPARM(2) *sh2_translate(SH2 *sh2, int tcache_id)
       case 0x03: // MOV    Rm,Rn        0110nnnnmmmm0011
         emit_move_r_r(GET_Rn(), GET_Rm());
         goto end_op;
-      case 0x07 ... 0x0f:
+      case 0x07:
+      case 0x08:
+      case 0x09:
+      case 0x0a:
+      case 0x0b:
+      case 0x0c:
+      case 0x0d:
+      case 0x0e:
+      case 0x0f:
         tmp  = rcache_get_reg(GET_Rm(), RC_GR_READ, NULL);
         tmp2 = rcache_get_reg(GET_Rn(), RC_GR_WRITE, NULL);
         switch (op & 0x0f)
@@ -5103,7 +5111,7 @@ end_op:
   // fill blx backup; do this last to backup final patched code
   for (i = 0; i < block->entry_count; i++)
     for (bl = block->entryp[i].o_links; bl; bl = bl->o_next)
-      memcpy(bl->jdisp, bl->blx ?: bl->jump, emith_jump_at_size());
+      memcpy(bl->jdisp, bl->blx ? bl->blx : bl->jump, emith_jump_at_size());
 
   ring_alloc(&tcache_ring[tcache_id], tcache_ptr - block_entry_ptr);
   host_instructions_updated(block_entry_ptr, tcache_ptr, 1);
@@ -6952,9 +6960,9 @@ end:
 
   *end_pc_out = end_pc;
   if (base_literals_out != NULL)
-    *base_literals_out = (lowest_literal ?: end_pc);
+    *base_literals_out = (lowest_literal ? lowest_literal : end_pc);
   if (end_literals_out != NULL)
-    *end_literals_out = (end_literals ?: end_pc);
+    *end_literals_out = (end_literals ? lowest_literal : end_pc);
 
   // crc overflow handling, twice to collect all overflows
   crc = (crc & 0xffff) + (crc >> 16);

+ 69 - 80
jni/Android.mk

@@ -1,94 +1,70 @@
 LOCAL_PATH := $(call my-dir)
 
-include $(CLEAR_VARS)
-
-GIT_VERSION ?= " $(shell git rev-parse --short HEAD || echo unknown)"
-ifneq ($(GIT_VERSION)," unknown")
-	LOCAL_CFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
-endif
-
-LOCAL_MODULE := retro
+CORE_DIR     := $(LOCAL_PATH)/..
+COMMON_DIR   := $(CORE_DIR)/platform/common
+LIBRETRO_DIR := $(CORE_DIR)/platform/libretro
+LIBRETRO_COMM_DIR := $(LIBRETRO_DIR)/libretro-common
+UNZIP_DIR    := $(CORE_DIR)/unzip
+R            := $(CORE_DIR)/
+FR           := $(R)
 
-R := ../
-FR := $(LOCAL_PATH)/$(R)
-
-use_cyclone = 0
-use_fame = 0
-use_musashi = 0
-use_drz80 = 0
-use_cz80 = 0
-use_sh2drc = 0
-use_svpdrc = 0
-
-asm_memory = 0
-asm_render = 0
-asm_ym2612 = 0
-asm_misc = 0
-asm_cdmemory = 0
-asm_mix = 0
-asm_32xdraw = 0
-asm_32xmemory = 0
+SRCS_COMMON :=
+DEFINES     :=
+ARCH        := $(TARGET_ARCH)
+
+use_cyclone  := 0
+use_fame     := 1
+use_musashi  := 0
+use_drz80    := 0
+use_cz80     := 1
+use_sh2drc   := 0
+use_svpdrc   := 0
+
+asm_memory   := 0
+asm_render   := 0
+asm_ym2612   := 0
+asm_misc     := 0
+asm_cdmemory := 0
+asm_mix      := 0
+asm_32xdraw  := 0
+asm_32xmemory := 0
 
 ifeq ($(TARGET_ARCH),arm)
-  LOCAL_ARM_MODE := arm
-  ifeq ($(NEON_BUILD),1)
-    LOCAL_ARM_NEON := true
-  endif
-
-#  use_cyclone = 1
-#  use_drz80 = 1
-  use_sh2drc = 1
-#  use_svpdrc = 1
-
-#  asm_memory = 1
-#  asm_render = 1
-#  asm_ym2612 = 1
-#  asm_misc = 1
-#  asm_cdmemory = 1
-#  asm_mix = 1
-#  asm_32xdraw = 1
-#  asm_32xmemory = 1
-
-# for armeabi to build...
-CYCLONE_CONFIG = cyclone_config_armv4.h
-
-$(cleantarget)::
-	$(MAKE) -C $(FR)cpu/cyclone/ clean
-
-else
-  use_fame = 1
-  use_cz80 = 1
+#  use_cyclone  := 1
+#  use_fame     := 0
+#  use_drz80    := 1
+#  use_cz80     := 0
+  use_sh2drc   := 1
+#  use_svpdrc   := 1
+
+#  asm_memory   := 1
+#  asm_render   := 1
+#  asm_ym2612   := 1
+#  asm_misc     := 1
+#  asm_cdmemory := 1
+#  asm_mix      := 1
+#  asm_32xdraw  := 1
+#  asm_32xmemory := 1
 endif
 
-# PD is currently not strict aliasing safe
-LOCAL_CFLAGS += -fno-strict-aliasing
-
-# sources
-SRCS_COMMON :=
-DEFINES :=
-ARCH := $(TARGET_ARCH)
-include $(R)platform/common/common.mak
-
-LOCAL_SRC_FILES += $(SRCS_COMMON)
-LOCAL_SRC_FILES += $(R)platform/libretro/libretro.c
-LOCAL_SRC_FILES += $(R)platform/common/mp3_sync.c
-LOCAL_SRC_FILES += $(R)platform/common/mp3.c
-LOCAL_SRC_FILES += $(R)platform/common/mp3_dummy.c
+ifeq ($(TARGET_ARCH_ABI),armeabi)
+  CYCLONE_CONFIG := cyclone_config_armv4.h
+endif
 
-# zlib/unzip
-LOCAL_SRC_FILES += $(R)zlib/gzio.c $(R)zlib/inffast.c $(R)zlib/inflate.c \
-	$(R)zlib/inftrees.c $(R)zlib/trees.c $(R)zlib/deflate.c \
-	$(R)zlib/crc32.c $(R)zlib/adler32.c $(R)zlib/zutil.c \
-	$(R)zlib/compress.c $(R)zlib/uncompr.c
+include $(COMMON_DIR)/common.mak
 
-LOCAL_SRC_FILES += $(R)unzip/unzip.c
+SOURCES_C := $(LIBRETRO_DIR)/libretro.c \
+             $(COMMON_DIR)/mp3.c \
+             $(COMMON_DIR)/mp3_sync.c \
+             $(COMMON_DIR)/mp3_dummy.c \
+             $(UNZIP_DIR)/unzip.c
 
-LOCAL_C_INCLUDES += $(R)
+COREFLAGS := $(addprefix -D,$(DEFINES)) -fno-strict-aliasing
 
-# note: don't use -O3, causes some NDKs run out of memory while compiling FAME
-LOCAL_CFLAGS += -Wall -O2 -ffast-math -DNDEBUG
-LOCAL_CFLAGS += $(addprefix -D,$(DEFINES))
-LOCAL_LDLIBS := -llog
+GIT_VERSION := $(shell git rev-parse --short HEAD || echo unknown)
+ifneq ($(GIT_VERSION),"unknown")
+  COREFLAGS += -DGIT_VERSION=\"$(GIT_VERSION)\"
+endif
 
 ifneq ($(filter armeabi%, $(TARGET_ARCH_ABI)),)
 $(CORE_DIR)/pico/pico_int_offs.h:
@@ -98,4 +74,17 @@ $(CORE_DIR)/pico/pico_int_offs.h:
 $(filter %.S,$(SRCS_COMMON)): $(CORE_DIR)/pico/pico_int_offs.h
 endif
 
+include $(CLEAR_VARS)
+LOCAL_MODULE     := retro
+LOCAL_SRC_FILES  := $(SRCS_COMMON) $(SOURCES_C)
+LOCAL_CFLAGS     := $(COREFLAGS)
+LOCAL_C_INCLUDES := $(CORE_DIR) $(LIBRETRO_COMM_DIR)/include
+LOCAL_LDFLAGS    := -Wl,-version-script=$(LIBRETRO_DIR)/link.T
+LOCAL_LDLIBS     := -llog -lz
+LOCAL_ARM_MODE   := arm
+
+ifeq ($(TARGET_ARCH_ABI),armeabi-v7a)
+  LOCAL_ARM_NEON := true
+endif
+
 include $(BUILD_SHARED_LIBRARY)

+ 3 - 3
pico/32x/memory.c

@@ -1817,7 +1817,7 @@ static void REGPARM(3) sh2_write32_dram(u32 a, u32 d, SH2 *sh2)
 static void REGPARM(3) sh2_write32_sdram(u32 a, u32 d, SH2 *sh2)
 {
   u32 a1 = a & 0x3fffc;
-  *(u32 *)(sh2->p_sdram + a1) = (d << 16) | (d >> 16);
+  *(u32 *)((char*)sh2->p_sdram + a1) = (d << 16) | (d >> 16);
 #ifdef DRC_SH2
   u8 *p = sh2->p_drcblk_ram;
   u32 t = p[a1 >> SH2_DRCBLK_RAM_SHIFT];
@@ -1940,7 +1940,7 @@ void *p32x_sh2_get_mem_ptr(u32 a, u32 *mask, SH2 *sh2)
   } else if ((a & 0xc6000000) == 0x02000000) {
     // banked ROM. Return bank address
     u32 bank = carthw_ssf2_banks[(a >> 19) & 7] << 19;
-    ret = sh2->p_rom + bank;
+    ret = (char*)sh2->p_rom + bank;
     *mask = 0x07ffff;
   }
 
@@ -1950,7 +1950,7 @@ void *p32x_sh2_get_mem_ptr(u32 a, u32 *mask, SH2 *sh2)
 int p32x_sh2_memcpy(u32 dst, u32 src, int count, int size, SH2 *sh2)
 {
   u32 mask;
-  void *ps, *pd;
+  u8 *ps, *pd;
   int len, i;
 
   // check if src and dst points to memory (rom/sdram/dram/da)

+ 3 - 0
pico/cart.c

@@ -12,6 +12,9 @@
 #include "../unzip/unzip.h"
 #include <zlib.h>
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
 
 static int rom_alloc_size;
 static const char *rom_exts[] = { "bin", "gen", "smd", "iso", "sms", "gg", "sg" };

+ 4 - 0
pico/cd/cd_image.c

@@ -11,6 +11,10 @@
 #include "cdd.h"
 #include "cue.h"
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 #if defined(__GNUC__) && __GNUC__ >= 7
 #pragma GCC diagnostic ignored "-Wformat-truncation"
 #endif

+ 9 - 3
pico/cd/cue.c

@@ -13,6 +13,10 @@
 #include "../pico_int.h"
 // #define elprintf(w,f,...) printf(f "\n",##__VA_ARGS__);
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 #ifdef _MSC_VER
 #define snprintf _snprintf
 #endif
@@ -74,9 +78,11 @@ static int get_ext(const char *fname, char ext[4],
 	strcpy(ext, fname + pos);
 
 	if (base != NULL) {
-		len = pos;
-		if (len + 1 < base_size)
-			len = base_size - 1;
+		if (pos + 1 < base_size)
+			pos = base_size - 1;
+
+		len = (pos < len) ? pos : len;
+
 		memcpy(base, fname, len);
 		base[len] = 0;
 	}

+ 2 - 2
pico/draw.c

@@ -1587,7 +1587,7 @@ void PicoDoHighPal555(int sh, int line, struct PicoEState *est)
   for (i = 0; i < 0x40 / 2; i++) {
     t = spal[i];
 #ifdef USE_BGR555
-    t = ((t & 0x000e000e)<< 1) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)<<4);
+    t = ((t & 0x0e000e00)<< 3) | ((t & 0x00e000e0)<<2) | ((t & 0x000e000e)<<1);
 #else
     t = ((t & 0x000e000e)<<12) | ((t & 0x00e000e0)<<3) | ((t & 0x0e000e00)>>7);
 #endif
@@ -2005,7 +2005,7 @@ void PicoDrawSetOutBufMD(void *dest, int increment)
   if (dest != NULL) {
     DrawLineDestBase = dest;
     DrawLineDestIncrement = increment;
-    Pico.est.DrawLineDest = DrawLineDestBase + Pico.est.DrawScanline * increment;
+    Pico.est.DrawLineDest = (char *)DrawLineDestBase + Pico.est.DrawScanline * increment;
   }
   else {
     DrawLineDestBase = DefOutBuff;

+ 1 - 1
pico/mode4.c

@@ -338,7 +338,7 @@ void PicoDoHighPal555M4(void)
   for (i = 0x20/2; i > 0; i--, spal++, dpal++) {
     t = *spal;
 #ifdef USE_BGR555
-    t = ((t & 0x00030003)<< 3) | ((t & 0x000c000c)<<7) | ((t & 0x00300030)<<10);
+    t = ((t & 0x00030003)<< 3) | ((t & 0x000c000c)<<6) | ((t & 0x00300030)<<9);
 #else
     t = ((t & 0x00030003)<<14) | ((t & 0x000c000c)<<7) | ((t & 0x00300030)>>1);
 #endif

+ 4 - 0
pico/patch.c

@@ -25,6 +25,10 @@
 #include "memory.h"
 #include "patch.h"
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 struct patch
 {
    unsigned int addr;

+ 2 - 0
pico/pico.h

@@ -102,6 +102,8 @@ typedef struct
 	unsigned short overclockM68k;  // overclock the emulated 68k, in %
 
 	int sndRate;                   // rate in Hz
+	unsigned short sndFilter;      // Set low pass sound filter 0: off, 1: on (use integer in case we want to add other filter types later)
+	int32_t sndFilterRange;        // Low pass sound filter range [0, 65536]
 	short *sndOut;                 // PCM output buffer
 	void (*writeSound)(int len);   // write .sndOut callback, called once per frame
 

+ 4 - 0
pico/sek.c

@@ -10,6 +10,10 @@
 #include "pico_int.h"
 #include "memory.h"
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 /* context */
 // Cyclone 68000
 #ifdef EMU_C68K

+ 80 - 0
pico/sound/sound.c

@@ -26,6 +26,73 @@ short cdda_out_buffer[2*1152];
 // sn76496
 extern int *sn76496_regs;
 
+// Low pass filter 'previous' samples
+static int32_t lpf_lp;
+static int32_t lpf_rp;
+
+static void low_pass_filter_stereo(int *buf32, int length)
+{
+  int samples = length;
+  int *out32 = buf32;
+  // Restore previous samples
+  int32_t lpf_l = lpf_lp;
+  int32_t lpf_r = lpf_rp;
+
+  // Single-pole low-pass filter (6 dB/octave)
+  int32_t factor_a = PicoIn.sndFilterRange;
+  int32_t factor_b = 0x10000 - factor_a;
+
+  do
+  {
+    // Apply low-pass filter
+    lpf_l = (lpf_l * factor_a) + (out32[0] * factor_b);
+    lpf_r = (lpf_r * factor_a) + (out32[1] * factor_b);
+
+    // 16.16 fixed point
+    lpf_l >>= 16;
+    lpf_r >>= 16;
+
+    // Update sound buffer
+    *out32++ = lpf_l;
+    *out32++ = lpf_r;
+  }
+  while (--samples);
+
+  // Save last samples for next frame
+  lpf_lp = lpf_l;
+  lpf_rp = lpf_r;
+}
+
+static void low_pass_filter_mono(int *buf32, int length)
+{
+  int samples = length;
+  int *out32 = buf32;
+  // Restore previous sample
+  int32_t lpf_l = lpf_lp;
+
+  // Single-pole low-pass filter (6 dB/octave)
+  int32_t factor_a = PicoIn.sndFilterRange;
+  int32_t factor_b = 0x10000 - factor_a;
+
+  do
+  {
+    // Apply low-pass filter
+    lpf_l = (lpf_l * factor_a) + (out32[0] * factor_b);
+
+    // 16.16 fixed point
+    lpf_l >>= 16;
+
+    // Update sound buffer
+    *out32++ = lpf_l;
+  }
+  while (--samples);
+
+  // Save last sample for next frame
+  lpf_lp = lpf_l;
+}
+
+void (*low_pass_filter)(int *buf32, int length) = low_pass_filter_stereo;
+
 // ym2413
 #define YM2413_CLK 3579545
 OPLL old_opll;
@@ -51,6 +118,11 @@ PICO_INTERNAL void PsndReset(void)
   // PsndRerate calls YM2612Init, which also resets
   PsndRerate(0);
   timers_reset();
+
+  // Reset low pass filter
+  lpf_lp = 0;
+  lpf_rp = 0;
+
   mix_reset();
 }
 
@@ -107,6 +179,9 @@ void PsndRerate(int preserve_state)
   // set mixer
   PsndMix_32_to_16l = (PicoIn.opt & POPT_EN_STEREO) ? mix_32_to_16l_stereo : mix_32_to_16_mono;
 
+  // set low pass filter
+  low_pass_filter = (PicoIn.opt & POPT_EN_STEREO) ? low_pass_filter_stereo : low_pass_filter_mono;
+
   if (PicoIn.AHW & PAHW_PICO)
     PicoReratePico();
 }
@@ -388,6 +463,11 @@ static int PsndRender(int offset, int length)
   if ((PicoIn.AHW & PAHW_32X) && (PicoIn.opt & POPT_EN_PWM))
     p32x_pwm_update(buf32, length-offset, stereo);
 
+  // Apply low pass filter, if required
+  if (PicoIn.sndFilter == 1) {
+    low_pass_filter(buf32, length);
+  }
+
   // convert + limit to normal 16bit output
   PsndMix_32_to_16l(PicoIn.sndOut+(offset<<stereo), buf32, length-offset);
 

+ 4 - 0
pico/state.c

@@ -14,6 +14,10 @@
 #include "sound/emu2413/emu2413.h"
 #include "state.h"
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 // sn76496 & ym2413
 extern int *sn76496_regs;
 extern OPLL old_opll;

+ 1 - 1
platform/common/common.mak

@@ -200,7 +200,7 @@ $(FR)cpu/cyclone/Cyclone.h:
 
 $(FR)cpu/cyclone/Cyclone.s: $(FR)cpu/$(CYCLONE_CONFIG)
 	@echo building Cyclone...
-	@make -C $(R)cpu/cyclone/ CONFIG_FILE=../$(CYCLONE_CONFIG) HAVE_ARMv6=$(HAVE_ARMv6)
+	@make CC=$(CYCLONE_CC) CXX=$(CYCLONE_CXX) -C $(R)cpu/cyclone/ CONFIG_FILE=../$(CYCLONE_CONFIG) HAVE_ARMv6=$(HAVE_ARMv6)
 
 $(FR)cpu/cyclone/Cyclone.s: $(FR)cpu/cyclone/*.cpp $(FR)cpu/cyclone/*.h
 

+ 4 - 0
platform/common/config_file.c

@@ -18,6 +18,10 @@
 #include "../libpicofe/lprintf.h"
 #include "config_file.h"
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 static char *mystrip(char *str);
 
 #ifndef _MSC_VER

+ 4 - 0
platform/common/emu.c

@@ -28,6 +28,10 @@
 #include <pico/pico_int.h>
 #include <pico/patch.h>
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
 #if defined(__GNUC__) && __GNUC__ >= 7
 #pragma GCC diagnostic ignored "-Wformat-truncation"
 #endif

+ 3 - 0
platform/common/main.c

@@ -21,6 +21,9 @@
 #include "version.h"
 #include <cpu/debug.h>
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
 
 static int load_state_slot = -1;
 char **g_argv;

+ 1 - 1
platform/libpicofe

@@ -1 +1 @@
-Subproject commit e22798555286824a802017d3a5849d893fc2912f
+Subproject commit e0bf794693c1c2384ef704e687df448168cd5170

+ 30 - 3
platform/libretro/3ds/3ds_utils.c

@@ -1,12 +1,31 @@
 
 #include "3ds_utils.h"
 
+#define GET_VERSION_MAJOR(version)    ((version) >>24)
+
 typedef int (*ctr_callback_type)(void);
 
 int srvGetServiceHandle(unsigned int* out, const char* name);
 int svcCloseHandle(unsigned int handle);
 int svcBackdoor(ctr_callback_type);
+int32_t svcGetSystemInfo(int64_t* out, uint32_t type, int32_t param);
+void ctr_clear_cache(void);
+
+static int has_rosalina;
+
+void check_rosalina(void) {
+  int64_t version;
+  uint32_t major;
+
+  has_rosalina = 0;
 
+  if (!svcGetSystemInfo(&version, 0x10000, 0)) {
+     major = GET_VERSION_MAJOR(version);
+
+     if (major >= 8)
+       has_rosalina = 1;
+  }
+}
 
 static void ctr_enable_all_svc_kernel(void)
 {
@@ -40,15 +59,23 @@ static void ctr_clean_invalidate_kernel(void)
 
 void ctr_flush_invalidate_cache(void)
 {
-//   __asm__ volatile("svc 0x2E\n\t");
-//   __asm__ volatile("svc 0x4B\n\t");
-   svcBackdoor((ctr_callback_type)ctr_clean_invalidate_kernel);
+  if (has_rosalina) {
+    ctr_clear_cache();
+   } else {
+    //   __asm__ volatile("svc 0x2E\n\t");
+    //   __asm__ volatile("svc 0x4B\n\t");
+    svcBackdoor((ctr_callback_type)ctr_clean_invalidate_kernel);
+   }
 }
 
 int ctr_svchack_init(void)
 {
+   extern unsigned int __ctr_svchax;
    extern unsigned int __service_ptr;
 
+   if(__ctr_svchax)
+      return 1; /* All services have already been enabled */
+
    if(__service_ptr)
       return 0;
 

+ 1 - 0
platform/libretro/3ds/3ds_utils.h

@@ -4,6 +4,7 @@
 void ctr_flush_invalidate_cache(void);
 
 int ctr_svchack_init(void);
+void check_rosalina(void);
 
 #include <stdio.h>
 #define DEBUG_HOLD() do{printf("%s@%s:%d.\n",__FUNCTION__, __FILE__, __LINE__);fflush(stdout);wait_for_input();}while(0)

+ 25 - 0
platform/libretro/3ds/utils.S

@@ -0,0 +1,25 @@
+  .text
+  .arm
+  .balign 4
+
+  .func ctr_clear_cache_kernel
+ctr_clear_cache_kernel:
+  cpsid aif
+  mov r0, #0
+  mcr p15, 0, r0, c7, c10, 0    @ Clean entire data cache
+  mcr p15, 0, r0, c7, c10, 5    @ Data Memory Barrier
+  mcr p15, 0, r0, c7, c5, 0     @ Invalidate entire instruction cache / Flush BTB
+  mcr p15, 0, r0, c7, c10, 4    @ Data Sync Barrier
+  bx lr
+  .endfunc
+
+  @@ Clear the entire data cache / invalidate the instruction cache. Uses
+  @@ Rosalina svcCustomBackdoor to avoid svcBackdoor stack corruption
+  @@ during interrupts.
+  .global ctr_clear_cache
+  .func ctr_clear_cache
+ctr_clear_cache:
+  ldr r0, =ctr_clear_cache_kernel
+  svc 0x80                      @ svcCustomBackdoor
+  bx lr
+  .endfunc

+ 104 - 0
platform/libretro/libretro-common/compat/compat_posix_string.c

@@ -0,0 +1,104 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (compat_posix_string.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <ctype.h>
+
+#include <compat/posix_string.h>
+
+#ifdef _WIN32
+
+#undef strcasecmp
+#undef strdup
+#undef isblank
+#undef strtok_r
+#include <ctype.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <compat/strl.h>
+
+#include <string.h>
+
+int retro_strcasecmp__(const char *a, const char *b)
+{
+   while (*a && *b)
+   {
+      int a_ = tolower(*a);
+      int b_ = tolower(*b);
+
+      if (a_ != b_)
+         return a_ - b_;
+
+      a++;
+      b++;
+   }
+
+   return tolower(*a) - tolower(*b);
+}
+
+char *retro_strdup__(const char *orig)
+{
+   size_t len = strlen(orig) + 1;
+   char *ret  = (char*)malloc(len);
+   if (!ret)
+      return NULL;
+
+   strlcpy(ret, orig, len);
+   return ret;
+}
+
+int retro_isblank__(int c)
+{
+   return (c == ' ') || (c == '\t');
+}
+
+char *retro_strtok_r__(char *str, const char *delim, char **saveptr)
+{
+   char *first = NULL;
+   if (!saveptr || !delim)
+      return NULL;
+
+   if (str)
+      *saveptr = str;
+
+   do
+   {
+      char *ptr = NULL;
+      first = *saveptr;
+      while (*first && strchr(delim, *first))
+         *first++ = '\0';
+
+      if (*first == '\0')
+         return NULL;
+
+      ptr = first + 1;
+
+      while (*ptr && !strchr(delim, *ptr))
+         ptr++;
+
+      *saveptr = ptr + (*ptr ? 1 : 0);
+      *ptr     = '\0';
+   } while (strlen(first) == 0);
+
+   return first;
+}
+
+#endif

+ 69 - 0
platform/libretro/libretro-common/compat/compat_strl.c

@@ -0,0 +1,69 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (compat_strl.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdlib.h>
+#include <ctype.h>
+
+#include <compat/strl.h>
+
+/* Implementation of strlcpy()/strlcat() based on OpenBSD. */
+
+#ifndef __MACH__
+
+size_t strlcpy(char *dest, const char *source, size_t size)
+{
+   size_t src_size = 0;
+   size_t        n = size;
+
+   if (n)
+      while (--n && (*dest++ = *source++)) src_size++;
+
+   if (!n)
+   {
+      if (size) *dest = '\0';
+      while (*source++) src_size++;
+   }
+
+   return src_size;
+}
+
+size_t strlcat(char *dest, const char *source, size_t size)
+{
+   size_t len = strlen(dest);
+
+   dest += len;
+
+   if (len > size)
+      size = 0;
+   else
+      size -= len;
+
+   return len + strlcpy(dest, source, size);
+}
+#endif
+
+char *strldup(const char *s, size_t n)
+{
+   char *dst = (char*)malloc(sizeof(char) * (n + 1));
+   strlcpy(dst, s, n);
+   return dst;
+}

+ 58 - 0
platform/libretro/libretro-common/compat/fopen_utf8.c

@@ -0,0 +1,58 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (fopen_utf8.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <compat/fopen_utf8.h>
+#include <encodings/utf.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)
+#ifndef LEGACY_WIN32
+#define LEGACY_WIN32
+#endif
+#endif
+
+#ifdef _WIN32
+#undef fopen
+
+void *fopen_utf8(const char * filename, const char * mode)
+{
+#if defined(LEGACY_WIN32)
+   FILE             *ret = NULL;
+   char * filename_local = utf8_to_local_string_alloc(filename);
+
+   if (!filename_local)
+      return NULL;
+   ret = fopen(filename_local, mode);
+   if (filename_local)
+      free(filename_local);
+   return ret;
+#else
+   wchar_t * filename_w = utf8_to_utf16_string_alloc(filename);
+   wchar_t * mode_w = utf8_to_utf16_string_alloc(mode);
+   FILE* ret = _wfopen(filename_w, mode_w);
+   free(filename_w);
+   free(mode_w);
+   return ret;
+#endif
+}
+#endif

+ 510 - 0
platform/libretro/libretro-common/encodings/encoding_utf.c

@@ -0,0 +1,510 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (encoding_utf.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <stdlib.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <boolean.h>
+#include <compat/strl.h>
+#include <retro_inline.h>
+
+#include <encodings/utf.h>
+
+#if defined(_WIN32) && !defined(_XBOX)
+#include <windows.h>
+#elif defined(_XBOX)
+#include <xtl.h>
+#endif
+
+static unsigned leading_ones(uint8_t c)
+{
+   unsigned ones = 0;
+   while (c & 0x80)
+   {
+      ones++;
+      c <<= 1;
+   }
+
+   return ones;
+}
+
+/* Simple implementation. Assumes the sequence is
+ * properly synchronized and terminated. */
+
+size_t utf8_conv_utf32(uint32_t *out, size_t out_chars,
+      const char *in, size_t in_size)
+{
+   unsigned i;
+   size_t ret = 0;
+   while (in_size && out_chars)
+   {
+      unsigned extra, shift;
+      uint32_t c;
+      uint8_t first = *in++;
+      unsigned ones = leading_ones(first);
+
+      if (ones > 6 || ones == 1) /* Invalid or desync. */
+         break;
+
+      extra = ones ? ones - 1 : ones;
+      if (1 + extra > in_size) /* Overflow. */
+         break;
+
+      shift = (extra - 1) * 6;
+      c     = (first & ((1 << (7 - ones)) - 1)) << (6 * extra);
+
+      for (i = 0; i < extra; i++, in++, shift -= 6)
+         c |= (*in & 0x3f) << shift;
+
+      *out++ = c;
+      in_size -= 1 + extra;
+      out_chars--;
+      ret++;
+   }
+
+   return ret;
+}
+
+bool utf16_conv_utf8(uint8_t *out, size_t *out_chars,
+     const uint16_t *in, size_t in_size)
+{
+   static uint8_t kUtf8Limits[5] = { 0xC0, 0xE0, 0xF0, 0xF8, 0xFC };
+   size_t out_pos = 0;
+   size_t in_pos  = 0;
+
+   for (;;)
+   {
+      unsigned numAdds;
+      uint32_t value;
+
+      if (in_pos == in_size)
+      {
+         *out_chars = out_pos;
+         return true;
+      }
+      value = in[in_pos++];
+      if (value < 0x80)
+      {
+         if (out)
+            out[out_pos] = (char)value;
+         out_pos++;
+         continue;
+      }
+
+      if (value >= 0xD800 && value < 0xE000)
+      {
+         uint32_t c2;
+
+         if (value >= 0xDC00 || in_pos == in_size)
+            break;
+         c2 = in[in_pos++];
+         if (c2 < 0xDC00 || c2 >= 0xE000)
+            break;
+         value = (((value - 0xD800) << 10) | (c2 - 0xDC00)) + 0x10000;
+      }
+
+      for (numAdds = 1; numAdds < 5; numAdds++)
+         if (value < (((uint32_t)1) << (numAdds * 5 + 6)))
+            break;
+      if (out)
+         out[out_pos] = (char)(kUtf8Limits[numAdds - 1]
+               + (value >> (6 * numAdds)));
+      out_pos++;
+      do
+      {
+         numAdds--;
+         if (out)
+            out[out_pos] = (char)(0x80
+                  + ((value >> (6 * numAdds)) & 0x3F));
+         out_pos++;
+      }while (numAdds != 0);
+   }
+
+   *out_chars = out_pos;
+   return false;
+}
+
+/* Acts mostly like strlcpy.
+ *
+ * Copies the given number of UTF-8 characters,
+ * but at most d_len bytes.
+ *
+ * Always NULL terminates.
+ * Does not copy half a character.
+ *
+ * Returns number of bytes. 's' is assumed valid UTF-8.
+ * Use only if 'chars' is considerably less than 'd_len'. */
+size_t utf8cpy(char *d, size_t d_len, const char *s, size_t chars)
+{
+   const uint8_t *sb     = (const uint8_t*)s;
+   const uint8_t *sb_org = sb;
+
+   if (!s)
+      return 0;
+
+   while (*sb && chars-- > 0)
+   {
+      sb++;
+      while ((*sb & 0xC0) == 0x80) sb++;
+   }
+
+   if ((size_t)(sb - sb_org) > d_len-1 /* NUL */)
+   {
+      sb = sb_org + d_len-1;
+      while ((*sb & 0xC0) == 0x80) sb--;
+   }
+
+   memcpy(d, sb_org, sb-sb_org);
+   d[sb-sb_org] = '\0';
+
+   return sb-sb_org;
+}
+
+const char *utf8skip(const char *str, size_t chars)
+{
+   const uint8_t *strb = (const uint8_t*)str;
+   if (!chars)
+      return str;
+   do
+   {
+      strb++;
+      while ((*strb & 0xC0)==0x80) strb++;
+      chars--;
+   } while(chars);
+   return (const char*)strb;
+}
+
+size_t utf8len(const char *string)
+{
+   size_t ret = 0;
+
+   if (!string)
+      return 0;
+
+   while (*string)
+   {
+      if ((*string & 0xC0) != 0x80)
+         ret++;
+      string++;
+   }
+   return ret;
+}
+
+#define utf8_walkbyte(string) (*((*(string))++))
+
+/* Does not validate the input, returns garbage if it's not UTF-8. */
+uint32_t utf8_walk(const char **string)
+{
+   uint8_t first = utf8_walkbyte(string);
+   uint32_t ret  = 0;
+
+   if (first < 128)
+      return first;
+
+   ret    = (ret << 6) | (utf8_walkbyte(string) & 0x3F);
+   if (first >= 0xE0)
+   {
+      ret = (ret << 6) | (utf8_walkbyte(string) & 0x3F);
+      if (first >= 0xF0)
+      {
+         ret = (ret << 6) | (utf8_walkbyte(string) & 0x3F);
+         return ret | (first & 7) << 18;
+      }
+      return ret | (first & 15) << 12;
+   }
+
+   return ret | (first & 31) << 6;
+}
+
+static bool utf16_to_char(uint8_t **utf_data,
+      size_t *dest_len, const uint16_t *in)
+{
+   unsigned len    = 0;
+
+   while (in[len] != '\0')
+      len++;
+
+   utf16_conv_utf8(NULL, dest_len, in, len);
+   *dest_len  += 1;
+   *utf_data   = (uint8_t*)malloc(*dest_len);
+   if (*utf_data == 0)
+      return false;
+
+   return utf16_conv_utf8(*utf_data, dest_len, in, len);
+}
+
+bool utf16_to_char_string(const uint16_t *in, char *s, size_t len)
+{
+   size_t     dest_len  = 0;
+   uint8_t *utf16_data  = NULL;
+   bool            ret  = utf16_to_char(&utf16_data, &dest_len, in);
+
+   if (ret)
+   {
+      utf16_data[dest_len] = 0;
+      strlcpy(s, (const char*)utf16_data, len);
+   }
+
+   free(utf16_data);
+   utf16_data = NULL;
+
+   return ret;
+}
+
+#if defined(_WIN32) && !defined(_XBOX) && !defined(UNICODE)
+/* Returned pointer MUST be freed by the caller if non-NULL. */
+static char *mb_to_mb_string_alloc(const char *str,
+      enum CodePage cp_in, enum CodePage cp_out)
+{
+   char *path_buf         = NULL;
+   wchar_t *path_buf_wide = NULL;
+   int path_buf_len       = 0;
+   int path_buf_wide_len  = MultiByteToWideChar(cp_in, 0, str, -1, NULL, 0);
+
+   /* Windows 95 will return 0 from these functions with 
+    * a UTF8 codepage set without MSLU.
+    *
+    * From an unknown MSDN version (others omit this info):
+    *   - CP_UTF8 Windows 98/Me, Windows NT 4.0 and later: 
+    *   Translate using UTF-8. When this is set, dwFlags must be zero.
+    *   - Windows 95: Under the Microsoft Layer for Unicode, 
+    *   MultiByteToWideChar also supports CP_UTF7 and CP_UTF8.
+    */
+
+   if (path_buf_wide_len)
+   {
+      path_buf_wide = (wchar_t*)
+         calloc(path_buf_wide_len + sizeof(wchar_t), sizeof(wchar_t));
+
+      if (path_buf_wide)
+      {
+         MultiByteToWideChar(cp_in, 0,
+               str, -1, path_buf_wide, path_buf_wide_len);
+
+         if (*path_buf_wide)
+         {
+            path_buf_len = WideCharToMultiByte(cp_out, 0,
+                  path_buf_wide, -1, NULL, 0, NULL, NULL);
+
+            if (path_buf_len)
+            {
+               path_buf = (char*)
+                  calloc(path_buf_len + sizeof(char), sizeof(char));
+
+               if (path_buf)
+               {
+                  WideCharToMultiByte(cp_out, 0,
+                        path_buf_wide, -1, path_buf,
+                        path_buf_len, NULL, NULL);
+
+                  free(path_buf_wide);
+
+                  if (*path_buf)
+                     return path_buf;
+
+                  free(path_buf);
+                  return NULL;
+               }
+            }
+            else
+            {
+               free(path_buf_wide);
+               return strdup(str);
+            }
+         }
+      }
+   }
+   else
+      return strdup(str);
+
+   if (path_buf_wide)
+      free(path_buf_wide);
+
+   return NULL;
+}
+#endif
+
+/* Returned pointer MUST be freed by the caller if non-NULL. */
+char* utf8_to_local_string_alloc(const char *str)
+{
+   if (str && *str)
+   {
+#if defined(_WIN32) && !defined(_XBOX) && !defined(UNICODE)
+      return mb_to_mb_string_alloc(str, CODEPAGE_UTF8, CODEPAGE_LOCAL);
+#else
+      /* assume string needs no modification if not on Windows */
+      return strdup(str);
+#endif
+   }
+   return NULL;
+}
+
+/* Returned pointer MUST be freed by the caller if non-NULL. */
+char* local_to_utf8_string_alloc(const char *str)
+{
+   if (str && *str)
+   {
+#if defined(_WIN32) && !defined(_XBOX) && !defined(UNICODE)
+      return mb_to_mb_string_alloc(str, CODEPAGE_LOCAL, CODEPAGE_UTF8);
+#else
+      /* assume string needs no modification if not on Windows */
+      return strdup(str);
+#endif
+   }
+   return NULL;
+}
+
+/* Returned pointer MUST be freed by the caller if non-NULL. */
+wchar_t* utf8_to_utf16_string_alloc(const char *str)
+{
+#ifdef _WIN32
+   int len = 0;
+   int out_len = 0;
+#else
+   size_t len = 0;
+   size_t out_len = 0;
+#endif
+   wchar_t *buf = NULL;
+
+   if (!str || !*str)
+      return NULL;
+
+#ifdef _WIN32
+   len = MultiByteToWideChar(CP_UTF8, 0, str, -1, NULL, 0);
+
+   if (len)
+   {
+      buf = (wchar_t*)calloc(len, sizeof(wchar_t));
+
+      if (!buf)
+         return NULL;
+
+      out_len = MultiByteToWideChar(CP_UTF8, 0, str, -1, buf, len);
+   }
+   else
+   {
+      /* fallback to ANSI codepage instead */
+      len = MultiByteToWideChar(CP_ACP, 0, str, -1, NULL, 0);
+
+      if (len)
+      {
+         buf = (wchar_t*)calloc(len, sizeof(wchar_t));
+
+         if (!buf)
+            return NULL;
+
+         out_len = MultiByteToWideChar(CP_ACP, 0, str, -1, buf, len);
+      }
+   }
+
+   if (out_len < 0)
+   {
+      free(buf);
+      return NULL;
+   }
+#else
+   /* NOTE: For now, assume non-Windows platforms' locale is already UTF-8. */
+   len = mbstowcs(NULL, str, 0) + 1;
+
+   if (len)
+   {
+      buf = (wchar_t*)calloc(len, sizeof(wchar_t));
+
+      if (!buf)
+         return NULL;
+
+      out_len = mbstowcs(buf, str, len);
+   }
+
+   if (out_len == (size_t)-1)
+   {
+      free(buf);
+      return NULL;
+   }
+#endif
+
+   return buf;
+}
+
+/* Returned pointer MUST be freed by the caller if non-NULL. */
+char* utf16_to_utf8_string_alloc(const wchar_t *str)
+{
+#ifdef _WIN32
+   int len        = 0;
+#else
+   size_t len     = 0;
+#endif
+   char *buf      = NULL;
+
+   if (!str || !*str)
+      return NULL;
+
+#ifdef _WIN32
+   {
+      UINT code_page = CP_UTF8;
+      len            = WideCharToMultiByte(code_page,
+            0, str, -1, NULL, 0, NULL, NULL);
+
+      /* fallback to ANSI codepage instead */
+      if (!len)
+      {
+         code_page   = CP_ACP;
+         len         = WideCharToMultiByte(code_page,
+               0, str, -1, NULL, 0, NULL, NULL);
+      }
+
+      buf = (char*)calloc(len, sizeof(char));
+
+      if (!buf)
+         return NULL;
+
+      if (WideCharToMultiByte(code_page,
+            0, str, -1, buf, len, NULL, NULL) < 0)
+      {
+         free(buf);
+         return NULL;
+      }
+   }
+#else
+   /* NOTE: For now, assume non-Windows platforms' 
+    * locale is already UTF-8. */
+   len = wcstombs(NULL, str, 0) + 1;
+
+   if (len)
+   {
+      buf = (char*)calloc(len, sizeof(char));
+
+      if (!buf)
+         return NULL;
+
+      if (wcstombs(buf, str, len) == (size_t)-1)
+      {
+         free(buf);
+         return NULL;
+      }
+   }
+#endif
+
+   return buf;
+}

+ 39 - 0
platform/libretro/libretro-common/include/boolean.h

@@ -0,0 +1,39 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (boolean.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_BOOLEAN_H
+#define __LIBRETRO_SDK_BOOLEAN_H
+
+#ifndef __cplusplus
+
+#if defined(_MSC_VER) && _MSC_VER < 1800 && !defined(SN_TARGET_PS3)
+/* Hack applied for MSVC when compiling in C89 mode as it isn't C99 compliant. */
+#define bool unsigned char
+#define true 1
+#define false 0
+#else
+#include <stdbool.h>
+#endif
+
+#endif
+
+#endif

+ 84 - 0
platform/libretro/libretro-common/include/compat/apple_compat.h

@@ -0,0 +1,84 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (apple_compat.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __APPLE_COMPAT_H
+#define __APPLE_COMPAT_H
+
+#ifdef __APPLE__
+#include <AvailabilityMacros.h>
+#endif
+
+#ifdef __OBJC__
+
+#if (MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4)
+typedef int NSInteger;
+typedef unsigned NSUInteger;
+typedef float CGFloat;
+#endif
+
+#ifndef __has_feature
+/* Compatibility with non-Clang compilers. */
+#define __has_feature(x) 0
+#endif
+
+#ifndef CF_RETURNS_RETAINED
+#if __has_feature(attribute_cf_returns_retained)
+#define CF_RETURNS_RETAINED __attribute__((cf_returns_retained))
+#else
+#define CF_RETURNS_RETAINED
+#endif
+#endif
+
+#ifndef NS_INLINE
+#define NS_INLINE inline
+#endif
+
+NS_INLINE CF_RETURNS_RETAINED CFTypeRef CFBridgingRetainCompat(id X)
+{
+#if __has_feature(objc_arc)
+   return (__bridge_retained CFTypeRef)X;
+#else
+   return X;
+#endif
+}
+
+#endif
+
+#ifdef IOS
+#ifndef __IPHONE_5_0
+#warning "This project uses features only available in iOS SDK 5.0 and later."
+#endif
+
+#ifdef __OBJC__
+#import <UIKit/UIKit.h>
+#import <GLKit/GLKit.h>
+#import <Foundation/Foundation.h>
+#endif
+
+#else
+
+#ifdef __OBJC__
+#include <objc/objc-runtime.h>
+#endif
+#endif
+
+#endif

+ 30 - 0
platform/libretro/libretro-common/include/compat/fnmatch.h

@@ -0,0 +1,30 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (fnmatch.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_FNMATCH_H__
+#define __LIBRETRO_SDK_COMPAT_FNMATCH_H__
+
+#define	FNM_NOMATCH	1
+
+int rl_fnmatch(const char *pattern, const char *string, int flags);
+
+#endif

+ 34 - 0
platform/libretro/libretro-common/include/compat/fopen_utf8.h

@@ -0,0 +1,34 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (fopen_utf8.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_FOPEN_UTF8_H
+#define __LIBRETRO_SDK_COMPAT_FOPEN_UTF8_H
+
+#ifdef _WIN32
+/* Defined to error rather than fopen_utf8, to make it clear to everyone reading the code that not worrying about utf16 is fine */
+/* TODO: enable */
+/* #define fopen (use fopen_utf8 instead) */
+void *fopen_utf8(const char * filename, const char * mode);
+#else
+#define fopen_utf8 fopen
+#endif
+#endif

+ 74 - 0
platform/libretro/libretro-common/include/compat/getopt.h

@@ -0,0 +1,74 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (getopt.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_GETOPT_H
+#define __LIBRETRO_SDK_COMPAT_GETOPT_H
+
+#if defined(RARCH_INTERNAL) && defined(HAVE_CONFIG_H)
+#include "../../../config.h"
+#endif
+
+/* Custom implementation of the GNU getopt_long for portability.
+ * Not designed to be fully compatible, but compatible with
+ * the features RetroArch uses. */
+
+#ifdef HAVE_GETOPT_LONG
+#include <getopt.h>
+#else
+/* Avoid possible naming collisions during link since we
+ * prefer to use the actual name. */
+#define getopt_long(argc, argv, optstring, longopts, longindex) __getopt_long_retro(argc, argv, optstring, longopts, longindex)
+
+#include <retro_common_api.h>
+
+RETRO_BEGIN_DECLS
+
+struct option
+{
+   const char *name;
+   int has_arg;
+   int *flag;
+   int val;
+};
+
+/* argv[] is declared with char * const argv[] in GNU,
+ * but this makes no sense, as non-POSIX getopt_long
+ * mutates argv (non-opts are moved to the end). */
+int getopt_long(int argc, char *argv[],
+      const char *optstring, const struct option *longopts, int *longindex);
+extern char *optarg;
+extern int optind, opterr, optopt;
+
+RETRO_END_DECLS
+
+/* If these are variously #defined, then we have bigger problems */
+#ifndef no_argument
+   #define no_argument 0
+   #define required_argument 1
+   #define optional_argument 2
+#endif
+
+/* HAVE_GETOPT_LONG */
+#endif
+
+/* pragma once */
+#endif

+ 53 - 0
platform/libretro/libretro-common/include/compat/ifaddrs.h

@@ -0,0 +1,53 @@
+/*
+ * Copyright (c) 1995, 1999
+ *	Berkeley Software Design, Inc.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *	BSDI ifaddrs.h,v 2.5 2000/02/23 14:51:59 dab Exp
+ */
+
+#ifndef	_IFADDRS_H_
+#define	_IFADDRS_H_
+
+struct ifaddrs
+{
+   struct ifaddrs  *ifa_next;
+   char		*ifa_name;
+   unsigned int	 ifa_flags;
+   struct sockaddr	*ifa_addr;
+   struct sockaddr	*ifa_netmask;
+   struct sockaddr	*ifa_dstaddr;
+   void		*ifa_data;
+};
+
+/*
+ * This may have been defined in <net/if.h>.  Note that if <net/if.h> is
+ * to be included it must be included before this header file.
+ */
+#ifndef	ifa_broadaddr
+#define	ifa_broadaddr	ifa_dstaddr	/* broadcast address interface */
+#endif
+
+#include <sys/cdefs.h>
+
+extern int getifaddrs(struct ifaddrs **ifap);
+extern void freeifaddrs(struct ifaddrs *ifa);
+
+#endif

+ 85 - 0
platform/libretro/libretro-common/include/compat/intrinsics.h

@@ -0,0 +1,85 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (intrinsics.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_INTRINSICS_H
+#define __LIBRETRO_SDK_COMPAT_INTRINSICS_H
+
+#include <stdint.h>
+#include <stddef.h>
+#include <string.h>
+
+#include <retro_common_api.h>
+#include <retro_inline.h>
+
+#if defined(_MSC_VER) && !defined(_XBOX)
+#if (_MSC_VER > 1310)
+#include <intrin.h>
+#endif
+#endif
+
+RETRO_BEGIN_DECLS
+
+/* Count Leading Zero, unsigned 16bit input value */
+static INLINE unsigned compat_clz_u16(uint16_t val)
+{
+#if defined(__GNUC__) && !defined(PS2)
+   return __builtin_clz(val << 16 | 0x8000);
+#else
+   unsigned ret = 0;
+
+   while(!(val & 0x8000) && ret < 16)
+   {
+      val <<= 1;
+      ret++;
+   }
+
+   return ret;
+#endif
+}
+
+/* Count Trailing Zero */
+static INLINE int compat_ctz(unsigned x)
+{
+#if defined(__GNUC__) && !defined(RARCH_CONSOLE)
+   return __builtin_ctz(x);
+#elif _MSC_VER >= 1400 && !defined(_XBOX) && !defined(__WINRT__)
+   unsigned long r = 0;
+   _BitScanReverse((unsigned long*)&r, x);
+   return (int)r;
+#else
+/* Only checks at nibble granularity,
+ * because that's what we need. */
+   if (x & 0x000f)
+      return 0;
+   if (x & 0x00f0)
+      return 4;
+   if (x & 0x0f00)
+      return 8;
+   if (x & 0xf000)
+      return 12;
+   return 16;
+#endif
+}
+
+RETRO_END_DECLS
+
+#endif

+ 131 - 0
platform/libretro/libretro-common/include/compat/msvc.h

@@ -0,0 +1,131 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (msvc.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_MSVC_H
+#define __LIBRETRO_SDK_COMPAT_MSVC_H
+
+#ifdef _MSC_VER
+
+#ifdef __cplusplus
+extern "C"  {
+#endif
+
+/* Pre-MSVC 2015 compilers don't implement snprintf in a cross-platform manner. */
+#if _MSC_VER < 1900
+   #include <stdio.h>
+   #include <stdlib.h>
+   #ifndef snprintf
+      #define snprintf c99_snprintf_retro__
+   #endif
+
+   int c99_snprintf_retro__(char *outBuf, size_t size, const char *format, ...);
+#endif
+
+/* Pre-MSVC 2008 compilers don't implement vsnprintf in a cross-platform manner? Not sure about this one. */
+#if _MSC_VER < 1500
+   #include <stdio.h>
+   #include <stdarg.h>
+   #include <stdlib.h>
+   #ifndef vsnprintf
+      #define vsnprintf c99_vsnprintf_retro__
+   #endif
+   int c99_vsnprintf_retro__(char *outBuf, size_t size, const char *format, va_list ap);
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#undef UNICODE /* Do not bother with UNICODE at this time. */
+#include <direct.h>
+#include <stddef.h>
+
+#define _USE_MATH_DEFINES
+#include <math.h>
+
+/* Python headers defines ssize_t and sets HAVE_SSIZE_T.
+ * Cannot duplicate these efforts.
+ */
+#ifndef HAVE_SSIZE_T
+#if defined(_WIN64)
+typedef __int64 ssize_t;
+#elif defined(_WIN32)
+typedef int ssize_t;
+#endif
+#endif
+
+#define mkdir(dirname, unused) _mkdir(dirname)
+#define strtoull _strtoui64
+#undef strcasecmp
+#define strcasecmp _stricmp
+#undef strncasecmp
+#define strncasecmp _strnicmp
+
+/* Disable some of the annoying warnings. */
+#pragma warning(disable : 4800)
+#pragma warning(disable : 4805)
+#pragma warning(disable : 4244)
+#pragma warning(disable : 4305)
+#pragma warning(disable : 4146)
+#pragma warning(disable : 4267)
+#pragma warning(disable : 4723)
+#pragma warning(disable : 4996)
+
+/* roundf and va_copy is available since MSVC 2013 */
+#if _MSC_VER < 1800
+#define roundf(in) (in >= 0.0f ? floorf(in + 0.5f) : ceilf(in - 0.5f))
+#define va_copy(x, y) ((x) = (y))
+#endif
+
+#if _MSC_VER <= 1310
+   #ifndef __cplusplus
+      /* VC6 math.h doesn't define some functions when in C mode.
+       * Trying to define a prototype gives "undefined reference".
+       * But providing an implementation then gives "function already has body".
+       * So the equivalent of the implementations from math.h are used as
+       * defines here instead, and it seems to work.
+       */
+      #define cosf(x) ((float)cos((double)x))
+      #define powf(x, y) ((float)pow((double)x, (double)y))
+      #define sinf(x) ((float)sin((double)x))
+      #define ceilf(x) ((float)ceil((double)x))
+      #define floorf(x) ((float)floor((double)x))
+      #define sqrtf(x) ((float)sqrt((double)x))
+      #define fabsf(x)    ((float)fabs((double)(x)))
+   #endif
+
+   #ifndef _strtoui64
+      #define _strtoui64(x, y, z) (_atoi64(x))
+   #endif
+
+#endif
+
+#ifndef PATH_MAX
+#define PATH_MAX _MAX_PATH
+#endif
+
+#ifndef SIZE_MAX
+#define SIZE_MAX _UI32_MAX
+#endif
+
+#endif
+#endif

+ 255 - 0
platform/libretro/libretro-common/include/compat/msvc/stdint.h

@@ -0,0 +1,255 @@
+/* ISO C9x  compliant stdint.h for Microsoft Visual Studio
+ * Based on ISO/IEC 9899:TC2 Committee draft (May 6, 2005) WG14/N1124
+ *
+ * Copyright (c) 2006-2008 Alexander Chemeris
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * 3. The name of the author may be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __RARCH_STDINT_H
+#define __RARCH_STDINT_H
+
+#if _MSC_VER && (_MSC_VER < 1600)
+/* Pre-MSVC 2010 needs an implementation of stdint.h. */
+
+#if _MSC_VER > 1000
+#pragma once
+#endif
+
+#include <limits.h>
+
+/* For Visual Studio 6 in C++ mode and for many Visual Studio versions when
+ * compiling for ARM we should wrap <wchar.h> include with 'extern "C++" {}'
+ * or compiler give many errors like this:
+ *
+ * error C2733: second C linkage of overloaded function 'wmemchr' not allowed
+ */
+#ifdef __cplusplus
+#if _MSC_VER <= 1200
+extern "C++" {
+#else
+extern "C" {
+#endif
+#endif
+#  include <wchar.h>
+#ifdef __cplusplus
+}
+#endif
+
+/* Define _W64 macros to mark types changing their size, like intptr_t. */
+#ifndef _W64
+#  if !defined(__midl) && (defined(_X86_) || defined(_M_IX86)) && _MSC_VER >= 1300
+#     define _W64 __w64
+#  else
+#     define _W64
+#  endif
+#endif
+
+/* 7.18.1 Integer types. */
+
+/* 7.18.1.1 Exact-width integer types. */
+
+/* Visual Studio 6 and Embedded Visual C++ 4 doesn't
+ * realize that, e.g. char has the same size as __int8
+ * so we give up on __intX for them.
+ */
+#if (_MSC_VER < 1300)
+   typedef signed char       int8_t;
+   typedef signed short      int16_t;
+   typedef signed int        int32_t;
+   typedef unsigned char     uint8_t;
+   typedef unsigned short    uint16_t;
+   typedef unsigned int      uint32_t;
+#else
+   typedef signed __int8     int8_t;
+   typedef signed __int16    int16_t;
+   typedef signed __int32    int32_t;
+   typedef unsigned __int8   uint8_t;
+   typedef unsigned __int16  uint16_t;
+   typedef unsigned __int32  uint32_t;
+#endif
+typedef signed __int64       int64_t;
+typedef unsigned __int64     uint64_t;
+
+/* 7.18.1.2 Minimum-width integer types. */
+typedef int8_t    int_least8_t;
+typedef int16_t   int_least16_t;
+typedef int32_t   int_least32_t;
+typedef int64_t   int_least64_t;
+typedef uint8_t   uint_least8_t;
+typedef uint16_t  uint_least16_t;
+typedef uint32_t  uint_least32_t;
+typedef uint64_t  uint_least64_t;
+
+/* 7.18.1.3 Fastest minimum-width integer types. */
+typedef int8_t    int_fast8_t;
+typedef int16_t   int_fast16_t;
+typedef int32_t   int_fast32_t;
+typedef int64_t   int_fast64_t;
+typedef uint8_t   uint_fast8_t;
+typedef uint16_t  uint_fast16_t;
+typedef uint32_t  uint_fast32_t;
+typedef uint64_t  uint_fast64_t;
+
+/* 7.18.1.4 Integer types capable of holding object pointers. */
+#ifdef _WIN64 /* [ */
+   typedef signed __int64    intptr_t;
+   typedef unsigned __int64  uintptr_t;
+#else /* _WIN64 ][ */
+   typedef _W64 signed int   intptr_t;
+   typedef _W64 unsigned int uintptr_t;
+#endif /* _WIN64 ] */
+
+/* 7.18.1.5 Greatest-width integer types. */
+typedef int64_t   intmax_t;
+typedef uint64_t  uintmax_t;
+
+/* 7.18.2 Limits of specified-width integer types. */
+
+#if !defined(__cplusplus) || defined(__STDC_LIMIT_MACROS)
+/* [   See footnote 220 at page 257 and footnote 221 at page 259. */
+
+/* 7.18.2.1 Limits of exact-width integer types. */
+#define INT8_MIN     ((int8_t)_I8_MIN)
+#define INT8_MAX     _I8_MAX
+#define INT16_MIN    ((int16_t)_I16_MIN)
+#define INT16_MAX    _I16_MAX
+#define INT32_MIN    ((int32_t)_I32_MIN)
+#define INT32_MAX    _I32_MAX
+#define INT64_MIN    ((int64_t)_I64_MIN)
+#define INT64_MAX    _I64_MAX
+#define UINT8_MAX    _UI8_MAX
+#define UINT16_MAX   _UI16_MAX
+#define UINT32_MAX   _UI32_MAX
+#define UINT64_MAX   _UI64_MAX
+
+/* 7.18.2.2 Limits of minimum-width integer types. */
+#define INT_LEAST8_MIN    INT8_MIN
+#define INT_LEAST8_MAX    INT8_MAX
+#define INT_LEAST16_MIN   INT16_MIN
+#define INT_LEAST16_MAX   INT16_MAX
+#define INT_LEAST32_MIN   INT32_MIN
+#define INT_LEAST32_MAX   INT32_MAX
+#define INT_LEAST64_MIN   INT64_MIN
+#define INT_LEAST64_MAX   INT64_MAX
+#define UINT_LEAST8_MAX   UINT8_MAX
+#define UINT_LEAST16_MAX  UINT16_MAX
+#define UINT_LEAST32_MAX  UINT32_MAX
+#define UINT_LEAST64_MAX  UINT64_MAX
+
+/* 7.18.2.3 Limits of fastest minimum-width integer types. */
+#define INT_FAST8_MIN    INT8_MIN
+#define INT_FAST8_MAX    INT8_MAX
+#define INT_FAST16_MIN   INT16_MIN
+#define INT_FAST16_MAX   INT16_MAX
+#define INT_FAST32_MIN   INT32_MIN
+#define INT_FAST32_MAX   INT32_MAX
+#define INT_FAST64_MIN   INT64_MIN
+#define INT_FAST64_MAX   INT64_MAX
+#define UINT_FAST8_MAX   UINT8_MAX
+#define UINT_FAST16_MAX  UINT16_MAX
+#define UINT_FAST32_MAX  UINT32_MAX
+#define UINT_FAST64_MAX  UINT64_MAX
+
+/* 7.18.2.4 Limits of integer types capable of holding object pointers. */
+#ifdef _WIN64 /* [ */
+#  define INTPTR_MIN   INT64_MIN
+#  define INTPTR_MAX   INT64_MAX
+#  define UINTPTR_MAX  UINT64_MAX
+#else /* _WIN64 ][ */
+#  define INTPTR_MIN   INT32_MIN
+#  define INTPTR_MAX   INT32_MAX
+#  define UINTPTR_MAX  UINT32_MAX
+#endif /* _WIN64 ] */
+
+/* 7.18.2.5 Limits of greatest-width integer types */
+#define INTMAX_MIN   INT64_MIN
+#define INTMAX_MAX   INT64_MAX
+#define UINTMAX_MAX  UINT64_MAX
+
+/* 7.18.3 Limits of other integer types */
+
+#ifdef _WIN64 /* [ */
+#  define PTRDIFF_MIN  _I64_MIN
+#  define PTRDIFF_MAX  _I64_MAX
+#else  /* _WIN64 ][ */
+#  define PTRDIFF_MIN  _I32_MIN
+#  define PTRDIFF_MAX  _I32_MAX
+#endif  /* _WIN64 ] */
+
+#define SIG_ATOMIC_MIN  INT_MIN
+#define SIG_ATOMIC_MAX  INT_MAX
+
+#ifndef SIZE_MAX /* [ */
+#  ifdef _WIN64 /* [ */
+#     define SIZE_MAX  _UI64_MAX
+#  else /* _WIN64 ][ */
+#     define SIZE_MAX  _UI32_MAX
+#  endif /* _WIN64 ] */
+#endif /* SIZE_MAX ] */
+
+/* WCHAR_MIN and WCHAR_MAX are also defined in <wchar.h> */
+#ifndef WCHAR_MIN /* [ */
+#  define WCHAR_MIN  0
+#endif  /* WCHAR_MIN ] */
+#ifndef WCHAR_MAX // [
+#  define WCHAR_MAX  _UI16_MAX
+#endif  /* WCHAR_MAX ] */
+
+#define WINT_MIN  0
+#define WINT_MAX  _UI16_MAX
+
+#endif /* __STDC_LIMIT_MACROS ] */
+
+/* 7.18.4 Limits of other integer types */
+
+#if !defined(__cplusplus) || defined(__STDC_CONSTANT_MACROS)
+/* [   See footnote 224 at page 260 */
+
+/* 7.18.4.1 Macros for minimum-width integer constants */
+
+#define INT8_C(val)  val##i8
+#define INT16_C(val) val##i16
+#define INT32_C(val) val##i32
+#define INT64_C(val) val##i64
+
+#define UINT8_C(val)  val##ui8
+#define UINT16_C(val) val##ui16
+#define UINT32_C(val) val##ui32
+#define UINT64_C(val) val##ui64
+
+/* 7.18.4.2 Macros for greatest-width integer constants */
+#define INTMAX_C   INT64_C
+#define UINTMAX_C  UINT64_C
+
+#endif
+/* __STDC_CONSTANT_MACROS ] */
+
+#else
+/* Sanity for everything else. */
+#include <stdint.h>
+#endif
+
+#endif

+ 64 - 0
platform/libretro/libretro-common/include/compat/posix_string.h

@@ -0,0 +1,64 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (posix_string.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_POSIX_STRING_H
+#define __LIBRETRO_SDK_COMPAT_POSIX_STRING_H
+
+#include <retro_common_api.h>
+
+#ifdef _MSC_VER
+#include <compat/msvc.h>
+#endif
+
+#if defined(PS2)
+#include <compat_ctype.h>
+#endif
+
+RETRO_BEGIN_DECLS
+
+#ifdef _WIN32
+#undef strtok_r
+#define strtok_r(str, delim, saveptr) retro_strtok_r__(str, delim, saveptr)
+
+char *strtok_r(char *str, const char *delim, char **saveptr);
+#endif
+
+#ifdef _MSC_VER
+#undef strcasecmp
+#undef strdup
+#define strcasecmp(a, b) retro_strcasecmp__(a, b)
+#define strdup(orig)     retro_strdup__(orig)
+int strcasecmp(const char *a, const char *b);
+char *strdup(const char *orig);
+
+/* isblank is available since MSVC 2013 */
+#if _MSC_VER < 1800
+#undef isblank
+#define isblank(c)       retro_isblank__(c)
+int isblank(int c);
+#endif
+
+#endif
+
+RETRO_END_DECLS
+
+#endif

+ 52 - 0
platform/libretro/libretro-common/include/compat/strcasestr.h

@@ -0,0 +1,52 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (strcasestr.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_STRCASESTR_H
+#define __LIBRETRO_SDK_COMPAT_STRCASESTR_H
+
+#include <string.h>
+
+#if defined(PS2)
+#include <compat_ctype.h>
+#endif
+
+#if defined(RARCH_INTERNAL) && defined(HAVE_CONFIG_H)
+#include "../../../config.h"
+#endif
+
+#ifndef HAVE_STRCASESTR
+
+#include <retro_common_api.h>
+
+RETRO_BEGIN_DECLS
+
+/* Avoid possible naming collisions during link
+ * since we prefer to use the actual name. */
+#define strcasestr(haystack, needle) strcasestr_retro__(haystack, needle)
+
+char *strcasestr(const char *haystack, const char *needle);
+
+RETRO_END_DECLS
+
+#endif
+
+#endif

+ 59 - 0
platform/libretro/libretro-common/include/compat/strl.h

@@ -0,0 +1,59 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (strl.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_COMPAT_STRL_H
+#define __LIBRETRO_SDK_COMPAT_STRL_H
+
+#include <string.h>
+#include <stddef.h>
+
+#if defined(RARCH_INTERNAL) && defined(HAVE_CONFIG_H)
+#include "../../../config.h"
+#endif
+
+#include <retro_common_api.h>
+
+RETRO_BEGIN_DECLS
+
+#ifdef __MACH__
+#ifndef HAVE_STRL
+#define HAVE_STRL
+#endif
+#endif
+
+#ifndef HAVE_STRL
+/* Avoid possible naming collisions during link since
+ * we prefer to use the actual name. */
+#define strlcpy(dst, src, size) strlcpy_retro__(dst, src, size)
+
+#define strlcat(dst, src, size) strlcat_retro__(dst, src, size)
+
+size_t strlcpy(char *dest, const char *source, size_t size);
+size_t strlcat(char *dest, const char *source, size_t size);
+
+#endif
+
+char *strldup(const char *s, size_t n);
+
+RETRO_END_DECLS
+
+#endif

+ 67 - 0
platform/libretro/libretro-common/include/encodings/utf.h

@@ -0,0 +1,67 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (utf.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _LIBRETRO_ENCODINGS_UTF_H
+#define _LIBRETRO_ENCODINGS_UTF_H
+
+#include <stdint.h>
+#include <stddef.h>
+
+#include <boolean.h>
+
+#include <retro_common_api.h>
+
+RETRO_BEGIN_DECLS
+
+enum CodePage
+{
+   CODEPAGE_LOCAL = 0, /* CP_ACP */
+   CODEPAGE_UTF8 = 65001 /* CP_UTF8 */
+};
+
+size_t utf8_conv_utf32(uint32_t *out, size_t out_chars,
+      const char *in, size_t in_size);
+
+bool utf16_conv_utf8(uint8_t *out, size_t *out_chars,
+      const uint16_t *in, size_t in_size);
+
+size_t utf8len(const char *string);
+
+size_t utf8cpy(char *d, size_t d_len, const char *s, size_t chars);
+
+const char *utf8skip(const char *str, size_t chars);
+
+uint32_t utf8_walk(const char **string);
+
+bool utf16_to_char_string(const uint16_t *in, char *s, size_t len);
+
+char* utf8_to_local_string_alloc(const char *str);
+
+char* local_to_utf8_string_alloc(const char *str);
+
+wchar_t* utf8_to_utf16_string_alloc(const char *str);
+
+char* utf16_to_utf8_string_alloc(const wchar_t *str);
+
+RETRO_END_DECLS
+
+#endif

+ 531 - 0
platform/libretro/libretro-common/include/file/file_path.h

@@ -0,0 +1,531 @@
+/* Copyright  (C) 2010-2019 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (file_path.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_FILE_PATH_H
+#define __LIBRETRO_SDK_FILE_PATH_H
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stddef.h>
+#include <sys/types.h>
+
+#include <libretro.h>
+#include <retro_common_api.h>
+
+#include <boolean.h>
+
+RETRO_BEGIN_DECLS
+
+#define PATH_REQUIRED_VFS_VERSION 3
+
+void path_vfs_init(const struct retro_vfs_interface_info* vfs_info);
+
+/* Order in this enum is equivalent to negative sort order in filelist
+ *  (i.e. DIRECTORY is on top of PLAIN_FILE) */
+enum
+{
+   RARCH_FILETYPE_UNSET,
+   RARCH_PLAIN_FILE,
+   RARCH_COMPRESSED_FILE_IN_ARCHIVE,
+   RARCH_COMPRESSED_ARCHIVE,
+   RARCH_DIRECTORY,
+   RARCH_FILE_UNSUPPORTED
+};
+
+/**
+ * path_is_compressed_file:
+ * @path               : path
+ *
+ * Checks if path is a compressed file.
+ *
+ * Returns: true (1) if path is a compressed file, otherwise false (0).
+ **/
+bool path_is_compressed_file(const char *path);
+
+/**
+ * path_contains_compressed_file:
+ * @path               : path
+ *
+ * Checks if path contains a compressed file.
+ *
+ * Currently we only check for hash symbol (#) inside the pathname.
+ * If path is ever expanded to a general URI, we should check for that here.
+ *
+ * Example:  Somewhere in the path there might be a compressed file
+ * E.g.: /path/to/file.7z#mygame.img
+ *
+ * Returns: true (1) if path contains compressed file, otherwise false (0).
+ **/
+#define path_contains_compressed_file(path) (path_get_archive_delim((path)) != NULL)
+
+/**
+ * path_get_archive_delim:
+ * @path               : path
+ *
+ * Gets delimiter of an archive file. Only the first '#'
+ * after a compression extension is considered.
+ *
+ * Returns: pointer to the delimiter in the path if it contains
+ * a compressed file, otherwise NULL.
+ */
+const char *path_get_archive_delim(const char *path);
+
+/**
+ * path_get_extension:
+ * @path               : path
+ *
+ * Gets extension of file. Only '.'s
+ * after the last slash are considered.
+ *
+ * Returns: extension part from the path.
+ */
+const char *path_get_extension(const char *path);
+
+/**
+ * path_remove_extension:
+ * @path               : path
+ *
+ * Mutates path by removing its extension. Removes all
+ * text after and including the last '.'.
+ * Only '.'s after the last slash are considered.
+ *
+ * Returns:
+ * 1) If path has an extension, returns path with the
+ *    extension removed.
+ * 2) If there is no extension, returns NULL.
+ * 3) If path is empty or NULL, returns NULL
+ */
+char *path_remove_extension(char *path);
+
+/**
+ * path_basename:
+ * @path               : path
+ *
+ * Get basename from @path.
+ *
+ * Returns: basename from path.
+ **/
+const char *path_basename(const char *path);
+
+/**
+ * path_basedir:
+ * @path               : path
+ *
+ * Extracts base directory by mutating path.
+ * Keeps trailing '/'.
+ **/
+void path_basedir(char *path);
+
+/**
+ * path_parent_dir:
+ * @path               : path
+ *
+ * Extracts parent directory by mutating path.
+ * Assumes that path is a directory. Keeps trailing '/'.
+ * If the path was already at the root directory, returns empty string
+ **/
+void path_parent_dir(char *path);
+
+/**
+ * path_resolve_realpath:
+ * @buf                : input and output buffer for path
+ * @size               : size of buffer
+ * @resolve_symlinks   : whether to resolve symlinks or not
+ *
+ * Resolves use of ".", "..", multiple slashes etc in absolute paths.
+ *
+ * Relative paths are rebased on the current working dir.
+ *
+ * Returns: @buf if successful, NULL otherwise.
+ * Note: Not implemented on consoles
+ * Note: Symlinks are only resolved on Unix-likes
+ * Note: The current working dir might not be what you expect,
+ *       e.g. on Android it is "/"
+ *       Use of fill_pathname_resolve_relative() should be prefered
+ **/
+char *path_resolve_realpath(char *buf, size_t size, bool resolve_symlinks);
+
+/**
+ * path_relative_to:
+ * @out                : buffer to write the relative path to
+ * @path               : path to be expressed relatively
+ * @base               : relative to this
+ * @size               : size of output buffer
+ *
+ * Turns @path into a path relative to @base and writes it to @out.
+ *
+ * @base is assumed to be a base directory, i.e. a path ending with '/' or '\'.
+ * Both @path and @base are assumed to be absolute paths without "." or "..".
+ *
+ * E.g. path /a/b/e/f.cgp with base /a/b/c/d/ turns into ../../e/f.cgp
+ **/
+void path_relative_to(char *out, const char *path, const char *base, size_t size);
+
+/**
+ * path_is_absolute:
+ * @path               : path
+ *
+ * Checks if @path is an absolute path or a relative path.
+ *
+ * Returns: true if path is absolute, false if path is relative.
+ **/
+bool path_is_absolute(const char *path);
+
+/**
+ * fill_pathname:
+ * @out_path           : output path
+ * @in_path            : input  path
+ * @replace            : what to replace
+ * @size               : buffer size of output path
+ *
+ * FIXME: Verify
+ *
+ * Replaces filename extension with 'replace' and outputs result to out_path.
+ * The extension here is considered to be the string from the last '.'
+ * to the end.
+ *
+ * Only '.'s after the last slash are considered as extensions.
+ * If no '.' is present, in_path and replace will simply be concatenated.
+ * 'size' is buffer size of 'out_path'.
+ * E.g.: in_path = "/foo/bar/baz/boo.c", replace = ".asm" =>
+ * out_path = "/foo/bar/baz/boo.asm"
+ * E.g.: in_path = "/foo/bar/baz/boo.c", replace = ""     =>
+ * out_path = "/foo/bar/baz/boo"
+ */
+void fill_pathname(char *out_path, const char *in_path,
+      const char *replace, size_t size);
+
+/**
+ * fill_dated_filename:
+ * @out_filename       : output filename
+ * @ext                : extension of output filename
+ * @size               : buffer size of output filename
+ *
+ * Creates a 'dated' filename prefixed by 'RetroArch', and
+ * concatenates extension (@ext) to it.
+ *
+ * E.g.:
+ * out_filename = "RetroArch-{month}{day}-{Hours}{Minutes}.{@ext}"
+ **/
+void fill_dated_filename(char *out_filename,
+      const char *ext, size_t size);
+
+/**
+ * fill_str_dated_filename:
+ * @out_filename       : output filename
+ * @in_str             : input string
+ * @ext                : extension of output filename
+ * @size               : buffer size of output filename
+ *
+ * Creates a 'dated' filename prefixed by the string @in_str, and
+ * concatenates extension (@ext) to it.
+ *
+ * E.g.:
+ * out_filename = "RetroArch-{year}{month}{day}-{Hour}{Minute}{Second}.{@ext}"
+ **/
+void fill_str_dated_filename(char *out_filename,
+      const char *in_str, const char *ext, size_t size);
+
+/**
+ * fill_pathname_noext:
+ * @out_path           : output path
+ * @in_path            : input  path
+ * @replace            : what to replace
+ * @size               : buffer size of output path
+ *
+ * Appends a filename extension 'replace' to 'in_path', and outputs
+ * result in 'out_path'.
+ *
+ * Assumes in_path has no extension. If an extension is still
+ * present in 'in_path', it will be ignored.
+ *
+ */
+void fill_pathname_noext(char *out_path, const char *in_path,
+      const char *replace, size_t size);
+
+/**
+ * find_last_slash:
+ * @str : input path
+ *
+ * Gets a pointer to the last slash in the input path.
+ *
+ * Returns: a pointer to the last slash in the input path.
+ **/
+char *find_last_slash(const char *str);
+
+/**
+ * fill_pathname_dir:
+ * @in_dir             : input directory path
+ * @in_basename        : input basename to be appended to @in_dir
+ * @replace            : replacement to be appended to @in_basename
+ * @size               : size of buffer
+ *
+ * Appends basename of 'in_basename', to 'in_dir', along with 'replace'.
+ * Basename of in_basename is the string after the last '/' or '\\',
+ * i.e the filename without directories.
+ *
+ * If in_basename has no '/' or '\\', the whole 'in_basename' will be used.
+ * 'size' is buffer size of 'in_dir'.
+ *
+ * E.g..: in_dir = "/tmp/some_dir", in_basename = "/some_content/foo.c",
+ * replace = ".asm" => in_dir = "/tmp/some_dir/foo.c.asm"
+ **/
+void fill_pathname_dir(char *in_dir, const char *in_basename,
+      const char *replace, size_t size);
+
+/**
+ * fill_pathname_base:
+ * @out                : output path
+ * @in_path            : input path
+ * @size               : size of output path
+ *
+ * Copies basename of @in_path into @out_path.
+ **/
+void fill_pathname_base(char *out_path, const char *in_path, size_t size);
+
+void fill_pathname_base_noext(char *out_dir,
+      const char *in_path, size_t size);
+
+void fill_pathname_base_ext(char *out,
+      const char *in_path, const char *ext,
+      size_t size);
+
+/**
+ * fill_pathname_basedir:
+ * @out_dir            : output directory
+ * @in_path            : input path
+ * @size               : size of output directory
+ *
+ * Copies base directory of @in_path into @out_path.
+ * If in_path is a path without any slashes (relative current directory),
+ * @out_path will get path "./".
+ **/
+void fill_pathname_basedir(char *out_path, const char *in_path, size_t size);
+
+void fill_pathname_basedir_noext(char *out_dir,
+      const char *in_path, size_t size);
+
+/**
+ * fill_pathname_parent_dir_name:
+ * @out_dir            : output directory
+ * @in_dir             : input directory
+ * @size               : size of output directory
+ *
+ * Copies only the parent directory name of @in_dir into @out_dir.
+ * The two buffers must not overlap. Removes trailing '/'.
+ * Returns true on success, false if a slash was not found in the path.
+ **/
+bool fill_pathname_parent_dir_name(char *out_dir,
+      const char *in_dir, size_t size);
+
+/**
+ * fill_pathname_parent_dir:
+ * @out_dir            : output directory
+ * @in_dir             : input directory
+ * @size               : size of output directory
+ *
+ * Copies parent directory of @in_dir into @out_dir.
+ * Assumes @in_dir is a directory. Keeps trailing '/'.
+ * If the path was already at the root directory, @out_dir will be an empty string.
+ **/
+void fill_pathname_parent_dir(char *out_dir,
+      const char *in_dir, size_t size);
+
+/**
+ * fill_pathname_resolve_relative:
+ * @out_path           : output path
+ * @in_refpath         : input reference path
+ * @in_path            : input path
+ * @size               : size of @out_path
+ *
+ * Joins basedir of @in_refpath together with @in_path.
+ * If @in_path is an absolute path, out_path = in_path.
+ * E.g.: in_refpath = "/foo/bar/baz.a", in_path = "foobar.cg",
+ * out_path = "/foo/bar/foobar.cg".
+ **/
+void fill_pathname_resolve_relative(char *out_path, const char *in_refpath,
+      const char *in_path, size_t size);
+
+/**
+ * fill_pathname_join:
+ * @out_path           : output path
+ * @dir                : directory
+ * @path               : path
+ * @size               : size of output path
+ *
+ * Joins a directory (@dir) and path (@path) together.
+ * Makes sure not to get  two consecutive slashes
+ * between directory and path.
+ **/
+void fill_pathname_join(char *out_path, const char *dir,
+      const char *path, size_t size);
+
+void fill_pathname_join_special_ext(char *out_path,
+      const char *dir,  const char *path,
+      const char *last, const char *ext,
+      size_t size);
+
+void fill_pathname_join_concat_noext(char *out_path,
+      const char *dir, const char *path,
+      const char *concat,
+      size_t size);
+
+void fill_pathname_join_concat(char *out_path,
+      const char *dir, const char *path,
+      const char *concat,
+      size_t size);
+
+void fill_pathname_join_noext(char *out_path,
+      const char *dir, const char *path, size_t size);
+
+/**
+ * fill_pathname_join_delim:
+ * @out_path           : output path
+ * @dir                : directory
+ * @path               : path
+ * @delim              : delimiter
+ * @size               : size of output path
+ *
+ * Joins a directory (@dir) and path (@path) together
+ * using the given delimiter (@delim).
+ **/
+void fill_pathname_join_delim(char *out_path, const char *dir,
+      const char *path, const char delim, size_t size);
+
+void fill_pathname_join_delim_concat(char *out_path, const char *dir,
+      const char *path, const char delim, const char *concat,
+      size_t size);
+
+/**
+ * fill_short_pathname_representation:
+ * @out_rep            : output representation
+ * @in_path            : input path
+ * @size               : size of output representation
+ *
+ * Generates a short representation of path. It should only
+ * be used for displaying the result; the output representation is not
+ * binding in any meaningful way (for a normal path, this is the same as basename)
+ * In case of more complex URLs, this should cut everything except for
+ * the main image file.
+ *
+ * E.g.: "/path/to/game.img" -> game.img
+ *       "/path/to/myarchive.7z#folder/to/game.img" -> game.img
+ */
+void fill_short_pathname_representation(char* out_rep,
+      const char *in_path, size_t size);
+
+void fill_short_pathname_representation_noext(char* out_rep,
+      const char *in_path, size_t size);
+
+void fill_pathname_expand_special(char *out_path,
+      const char *in_path, size_t size);
+
+void fill_pathname_abbreviate_special(char *out_path,
+      const char *in_path, size_t size);
+
+/**
+ * path_basedir:
+ * @path               : path
+ *
+ * Extracts base directory by mutating path.
+ * Keeps trailing '/'.
+ **/
+void path_basedir_wrapper(char *path);
+
+/**
+ * path_char_is_slash:
+ * @c                  : character
+ *
+ * Checks if character (@c) is a slash.
+ *
+ * Returns: true (1) if character is a slash, otherwise false (0).
+ */
+#ifdef _WIN32
+#define path_char_is_slash(c) (((c) == '/') || ((c) == '\\'))
+#else
+#define path_char_is_slash(c) ((c) == '/')
+#endif
+
+/**
+ * path_default_slash and path_default_slash_c:
+ *
+ * Gets the default slash separator.
+ *
+ * Returns: default slash separator.
+ */
+#ifdef _WIN32
+#define path_default_slash() "\\"
+#define path_default_slash_c() '\\'
+#else
+#define path_default_slash() "/"
+#define path_default_slash_c() '/'
+#endif
+
+/**
+ * fill_pathname_slash:
+ * @path               : path
+ * @size               : size of path
+ *
+ * Assumes path is a directory. Appends a slash
+ * if not already there.
+ **/
+void fill_pathname_slash(char *path, size_t size);
+
+#if !defined(RARCH_CONSOLE) && defined(RARCH_INTERNAL)
+void fill_pathname_application_path(char *buf, size_t size);
+void fill_pathname_application_dir(char *buf, size_t size);
+void fill_pathname_home_dir(char *buf, size_t size);
+#endif
+
+/**
+ * path_mkdir:
+ * @dir                : directory
+ *
+ * Create directory on filesystem.
+ *
+ * Returns: true (1) if directory could be created, otherwise false (0).
+ **/
+bool path_mkdir(const char *dir);
+
+/**
+ * path_is_directory:
+ * @path               : path
+ *
+ * Checks if path is a directory.
+ *
+ * Returns: true (1) if path is a directory, otherwise false (0).
+ */
+bool path_is_directory(const char *path);
+
+bool path_is_character_special(const char *path);
+
+int path_stat(const char *path);
+
+bool path_is_valid(const char *path);
+
+int32_t path_get_size(const char *path);
+
+bool is_path_accessible_using_standard_io(const char *path);
+
+RETRO_END_DECLS
+
+#endif

+ 3089 - 0
platform/libretro/libretro-common/include/libretro.h

@@ -0,0 +1,3089 @@
+/* Copyright (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this libretro API header (libretro.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef LIBRETRO_H__
+#define LIBRETRO_H__
+
+#include <stdint.h>
+#include <stddef.h>
+#include <limits.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef __cplusplus
+#if defined(_MSC_VER) && _MSC_VER < 1800 && !defined(SN_TARGET_PS3)
+/* Hack applied for MSVC when compiling in C89 mode
+ * as it isn't C99-compliant. */
+#define bool unsigned char
+#define true 1
+#define false 0
+#else
+#include <stdbool.h>
+#endif
+#endif
+
+#ifndef RETRO_CALLCONV
+#  if defined(__GNUC__) && defined(__i386__) && !defined(__x86_64__)
+#    define RETRO_CALLCONV __attribute__((cdecl))
+#  elif defined(_MSC_VER) && defined(_M_X86) && !defined(_M_X64)
+#    define RETRO_CALLCONV __cdecl
+#  else
+#    define RETRO_CALLCONV /* all other platforms only have one calling convention each */
+#  endif
+#endif
+
+#ifndef RETRO_API
+#  if defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
+#    ifdef RETRO_IMPORT_SYMBOLS
+#      ifdef __GNUC__
+#        define RETRO_API RETRO_CALLCONV __attribute__((__dllimport__))
+#      else
+#        define RETRO_API RETRO_CALLCONV __declspec(dllimport)
+#      endif
+#    else
+#      ifdef __GNUC__
+#        define RETRO_API RETRO_CALLCONV __attribute__((__dllexport__))
+#      else
+#        define RETRO_API RETRO_CALLCONV __declspec(dllexport)
+#      endif
+#    endif
+#  else
+#      if defined(__GNUC__) && __GNUC__ >= 4 && !defined(__CELLOS_LV2__)
+#        define RETRO_API RETRO_CALLCONV __attribute__((__visibility__("default")))
+#      else
+#        define RETRO_API RETRO_CALLCONV
+#      endif
+#  endif
+#endif
+
+/* Used for checking API/ABI mismatches that can break libretro
+ * implementations.
+ * It is not incremented for compatible changes to the API.
+ */
+#define RETRO_API_VERSION         1
+
+/*
+ * Libretro's fundamental device abstractions.
+ *
+ * Libretro's input system consists of some standardized device types,
+ * such as a joypad (with/without analog), mouse, keyboard, lightgun
+ * and a pointer.
+ *
+ * The functionality of these devices are fixed, and individual cores
+ * map their own concept of a controller to libretro's abstractions.
+ * This makes it possible for frontends to map the abstract types to a
+ * real input device, and not having to worry about binding input
+ * correctly to arbitrary controller layouts.
+ */
+
+#define RETRO_DEVICE_TYPE_SHIFT         8
+#define RETRO_DEVICE_MASK               ((1 << RETRO_DEVICE_TYPE_SHIFT) - 1)
+#define RETRO_DEVICE_SUBCLASS(base, id) (((id + 1) << RETRO_DEVICE_TYPE_SHIFT) | base)
+
+/* Input disabled. */
+#define RETRO_DEVICE_NONE         0
+
+/* The JOYPAD is called RetroPad. It is essentially a Super Nintendo
+ * controller, but with additional L2/R2/L3/R3 buttons, similar to a
+ * PS1 DualShock. */
+#define RETRO_DEVICE_JOYPAD       1
+
+/* The mouse is a simple mouse, similar to Super Nintendo's mouse.
+ * X and Y coordinates are reported relatively to last poll (poll callback).
+ * It is up to the libretro implementation to keep track of where the mouse
+ * pointer is supposed to be on the screen.
+ * The frontend must make sure not to interfere with its own hardware
+ * mouse pointer.
+ */
+#define RETRO_DEVICE_MOUSE        2
+
+/* KEYBOARD device lets one poll for raw key pressed.
+ * It is poll based, so input callback will return with the current
+ * pressed state.
+ * For event/text based keyboard input, see
+ * RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK.
+ */
+#define RETRO_DEVICE_KEYBOARD     3
+
+/* LIGHTGUN device is similar to Guncon-2 for PlayStation 2.
+ * It reports X/Y coordinates in screen space (similar to the pointer)
+ * in the range [-0x8000, 0x7fff] in both axes, with zero being center and
+ * -0x8000 being out of bounds.
+ * As well as reporting on/off screen state. It features a trigger,
+ * start/select buttons, auxiliary action buttons and a
+ * directional pad. A forced off-screen shot can be requested for
+ * auto-reloading function in some games.
+ */
+#define RETRO_DEVICE_LIGHTGUN     4
+
+/* The ANALOG device is an extension to JOYPAD (RetroPad).
+ * Similar to DualShock2 it adds two analog sticks and all buttons can
+ * be analog. This is treated as a separate device type as it returns
+ * axis values in the full analog range of [-0x7fff, 0x7fff],
+ * although some devices may return -0x8000.
+ * Positive X axis is right. Positive Y axis is down.
+ * Buttons are returned in the range [0, 0x7fff].
+ * Only use ANALOG type when polling for analog values.
+ */
+#define RETRO_DEVICE_ANALOG       5
+
+/* Abstracts the concept of a pointing mechanism, e.g. touch.
+ * This allows libretro to query in absolute coordinates where on the
+ * screen a mouse (or something similar) is being placed.
+ * For a touch centric device, coordinates reported are the coordinates
+ * of the press.
+ *
+ * Coordinates in X and Y are reported as:
+ * [-0x7fff, 0x7fff]: -0x7fff corresponds to the far left/top of the screen,
+ * and 0x7fff corresponds to the far right/bottom of the screen.
+ * The "screen" is here defined as area that is passed to the frontend and
+ * later displayed on the monitor.
+ *
+ * The frontend is free to scale/resize this screen as it sees fit, however,
+ * (X, Y) = (-0x7fff, -0x7fff) will correspond to the top-left pixel of the
+ * game image, etc.
+ *
+ * To check if the pointer coordinates are valid (e.g. a touch display
+ * actually being touched), PRESSED returns 1 or 0.
+ *
+ * If using a mouse on a desktop, PRESSED will usually correspond to the
+ * left mouse button, but this is a frontend decision.
+ * PRESSED will only return 1 if the pointer is inside the game screen.
+ *
+ * For multi-touch, the index variable can be used to successively query
+ * more presses.
+ * If index = 0 returns true for _PRESSED, coordinates can be extracted
+ * with _X, _Y for index = 0. One can then query _PRESSED, _X, _Y with
+ * index = 1, and so on.
+ * Eventually _PRESSED will return false for an index. No further presses
+ * are registered at this point. */
+#define RETRO_DEVICE_POINTER      6
+
+/* Buttons for the RetroPad (JOYPAD).
+ * The placement of these is equivalent to placements on the
+ * Super Nintendo controller.
+ * L2/R2/L3/R3 buttons correspond to the PS1 DualShock.
+ * Also used as id values for RETRO_DEVICE_INDEX_ANALOG_BUTTON */
+#define RETRO_DEVICE_ID_JOYPAD_B        0
+#define RETRO_DEVICE_ID_JOYPAD_Y        1
+#define RETRO_DEVICE_ID_JOYPAD_SELECT   2
+#define RETRO_DEVICE_ID_JOYPAD_START    3
+#define RETRO_DEVICE_ID_JOYPAD_UP       4
+#define RETRO_DEVICE_ID_JOYPAD_DOWN     5
+#define RETRO_DEVICE_ID_JOYPAD_LEFT     6
+#define RETRO_DEVICE_ID_JOYPAD_RIGHT    7
+#define RETRO_DEVICE_ID_JOYPAD_A        8
+#define RETRO_DEVICE_ID_JOYPAD_X        9
+#define RETRO_DEVICE_ID_JOYPAD_L       10
+#define RETRO_DEVICE_ID_JOYPAD_R       11
+#define RETRO_DEVICE_ID_JOYPAD_L2      12
+#define RETRO_DEVICE_ID_JOYPAD_R2      13
+#define RETRO_DEVICE_ID_JOYPAD_L3      14
+#define RETRO_DEVICE_ID_JOYPAD_R3      15
+
+#define RETRO_DEVICE_ID_JOYPAD_MASK    256
+
+/* Index / Id values for ANALOG device. */
+#define RETRO_DEVICE_INDEX_ANALOG_LEFT       0
+#define RETRO_DEVICE_INDEX_ANALOG_RIGHT      1
+#define RETRO_DEVICE_INDEX_ANALOG_BUTTON     2
+#define RETRO_DEVICE_ID_ANALOG_X             0
+#define RETRO_DEVICE_ID_ANALOG_Y             1
+
+/* Id values for MOUSE. */
+#define RETRO_DEVICE_ID_MOUSE_X                0
+#define RETRO_DEVICE_ID_MOUSE_Y                1
+#define RETRO_DEVICE_ID_MOUSE_LEFT             2
+#define RETRO_DEVICE_ID_MOUSE_RIGHT            3
+#define RETRO_DEVICE_ID_MOUSE_WHEELUP          4
+#define RETRO_DEVICE_ID_MOUSE_WHEELDOWN        5
+#define RETRO_DEVICE_ID_MOUSE_MIDDLE           6
+#define RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELUP    7
+#define RETRO_DEVICE_ID_MOUSE_HORIZ_WHEELDOWN  8
+#define RETRO_DEVICE_ID_MOUSE_BUTTON_4         9
+#define RETRO_DEVICE_ID_MOUSE_BUTTON_5         10
+
+/* Id values for LIGHTGUN. */
+#define RETRO_DEVICE_ID_LIGHTGUN_SCREEN_X        13 /*Absolute Position*/
+#define RETRO_DEVICE_ID_LIGHTGUN_SCREEN_Y        14 /*Absolute*/
+#define RETRO_DEVICE_ID_LIGHTGUN_IS_OFFSCREEN    15 /*Status Check*/
+#define RETRO_DEVICE_ID_LIGHTGUN_TRIGGER          2
+#define RETRO_DEVICE_ID_LIGHTGUN_RELOAD          16 /*Forced off-screen shot*/
+#define RETRO_DEVICE_ID_LIGHTGUN_AUX_A            3
+#define RETRO_DEVICE_ID_LIGHTGUN_AUX_B            4
+#define RETRO_DEVICE_ID_LIGHTGUN_START            6
+#define RETRO_DEVICE_ID_LIGHTGUN_SELECT           7
+#define RETRO_DEVICE_ID_LIGHTGUN_AUX_C            8
+#define RETRO_DEVICE_ID_LIGHTGUN_DPAD_UP          9
+#define RETRO_DEVICE_ID_LIGHTGUN_DPAD_DOWN       10
+#define RETRO_DEVICE_ID_LIGHTGUN_DPAD_LEFT       11
+#define RETRO_DEVICE_ID_LIGHTGUN_DPAD_RIGHT      12
+/* deprecated */
+#define RETRO_DEVICE_ID_LIGHTGUN_X                0 /*Relative Position*/
+#define RETRO_DEVICE_ID_LIGHTGUN_Y                1 /*Relative*/
+#define RETRO_DEVICE_ID_LIGHTGUN_CURSOR           3 /*Use Aux:A*/
+#define RETRO_DEVICE_ID_LIGHTGUN_TURBO            4 /*Use Aux:B*/
+#define RETRO_DEVICE_ID_LIGHTGUN_PAUSE            5 /*Use Start*/
+
+/* Id values for POINTER. */
+#define RETRO_DEVICE_ID_POINTER_X         0
+#define RETRO_DEVICE_ID_POINTER_Y         1
+#define RETRO_DEVICE_ID_POINTER_PRESSED   2
+#define RETRO_DEVICE_ID_POINTER_COUNT     3
+
+/* Returned from retro_get_region(). */
+#define RETRO_REGION_NTSC  0
+#define RETRO_REGION_PAL   1
+
+/* Id values for LANGUAGE */
+enum retro_language
+{
+   RETRO_LANGUAGE_ENGLISH             = 0,
+   RETRO_LANGUAGE_JAPANESE            = 1,
+   RETRO_LANGUAGE_FRENCH              = 2,
+   RETRO_LANGUAGE_SPANISH             = 3,
+   RETRO_LANGUAGE_GERMAN              = 4,
+   RETRO_LANGUAGE_ITALIAN             = 5,
+   RETRO_LANGUAGE_DUTCH               = 6,
+   RETRO_LANGUAGE_PORTUGUESE_BRAZIL   = 7,
+   RETRO_LANGUAGE_PORTUGUESE_PORTUGAL = 8,
+   RETRO_LANGUAGE_RUSSIAN             = 9,
+   RETRO_LANGUAGE_KOREAN              = 10,
+   RETRO_LANGUAGE_CHINESE_TRADITIONAL = 11,
+   RETRO_LANGUAGE_CHINESE_SIMPLIFIED  = 12,
+   RETRO_LANGUAGE_ESPERANTO           = 13,
+   RETRO_LANGUAGE_POLISH              = 14,
+   RETRO_LANGUAGE_VIETNAMESE          = 15,
+   RETRO_LANGUAGE_ARABIC              = 16,
+   RETRO_LANGUAGE_GREEK               = 17,
+   RETRO_LANGUAGE_TURKISH             = 18,
+   RETRO_LANGUAGE_SLOVAK              = 19,
+   RETRO_LANGUAGE_PERSIAN             = 20,
+   RETRO_LANGUAGE_HEBREW              = 21,
+   RETRO_LANGUAGE_ASTURIAN            = 22,
+   RETRO_LANGUAGE_LAST,
+
+   /* Ensure sizeof(enum) == sizeof(int) */
+   RETRO_LANGUAGE_DUMMY          = INT_MAX
+};
+
+/* Passed to retro_get_memory_data/size().
+ * If the memory type doesn't apply to the
+ * implementation NULL/0 can be returned.
+ */
+#define RETRO_MEMORY_MASK        0xff
+
+/* Regular save RAM. This RAM is usually found on a game cartridge,
+ * backed up by a battery.
+ * If save game data is too complex for a single memory buffer,
+ * the SAVE_DIRECTORY (preferably) or SYSTEM_DIRECTORY environment
+ * callback can be used. */
+#define RETRO_MEMORY_SAVE_RAM    0
+
+/* Some games have a built-in clock to keep track of time.
+ * This memory is usually just a couple of bytes to keep track of time.
+ */
+#define RETRO_MEMORY_RTC         1
+
+/* System ram lets a frontend peek into a game systems main RAM. */
+#define RETRO_MEMORY_SYSTEM_RAM  2
+
+/* Video ram lets a frontend peek into a game systems video RAM (VRAM). */
+#define RETRO_MEMORY_VIDEO_RAM   3
+
+/* Keysyms used for ID in input state callback when polling RETRO_KEYBOARD. */
+enum retro_key
+{
+   RETROK_UNKNOWN        = 0,
+   RETROK_FIRST          = 0,
+   RETROK_BACKSPACE      = 8,
+   RETROK_TAB            = 9,
+   RETROK_CLEAR          = 12,
+   RETROK_RETURN         = 13,
+   RETROK_PAUSE          = 19,
+   RETROK_ESCAPE         = 27,
+   RETROK_SPACE          = 32,
+   RETROK_EXCLAIM        = 33,
+   RETROK_QUOTEDBL       = 34,
+   RETROK_HASH           = 35,
+   RETROK_DOLLAR         = 36,
+   RETROK_AMPERSAND      = 38,
+   RETROK_QUOTE          = 39,
+   RETROK_LEFTPAREN      = 40,
+   RETROK_RIGHTPAREN     = 41,
+   RETROK_ASTERISK       = 42,
+   RETROK_PLUS           = 43,
+   RETROK_COMMA          = 44,
+   RETROK_MINUS          = 45,
+   RETROK_PERIOD         = 46,
+   RETROK_SLASH          = 47,
+   RETROK_0              = 48,
+   RETROK_1              = 49,
+   RETROK_2              = 50,
+   RETROK_3              = 51,
+   RETROK_4              = 52,
+   RETROK_5              = 53,
+   RETROK_6              = 54,
+   RETROK_7              = 55,
+   RETROK_8              = 56,
+   RETROK_9              = 57,
+   RETROK_COLON          = 58,
+   RETROK_SEMICOLON      = 59,
+   RETROK_LESS           = 60,
+   RETROK_EQUALS         = 61,
+   RETROK_GREATER        = 62,
+   RETROK_QUESTION       = 63,
+   RETROK_AT             = 64,
+   RETROK_LEFTBRACKET    = 91,
+   RETROK_BACKSLASH      = 92,
+   RETROK_RIGHTBRACKET   = 93,
+   RETROK_CARET          = 94,
+   RETROK_UNDERSCORE     = 95,
+   RETROK_BACKQUOTE      = 96,
+   RETROK_a              = 97,
+   RETROK_b              = 98,
+   RETROK_c              = 99,
+   RETROK_d              = 100,
+   RETROK_e              = 101,
+   RETROK_f              = 102,
+   RETROK_g              = 103,
+   RETROK_h              = 104,
+   RETROK_i              = 105,
+   RETROK_j              = 106,
+   RETROK_k              = 107,
+   RETROK_l              = 108,
+   RETROK_m              = 109,
+   RETROK_n              = 110,
+   RETROK_o              = 111,
+   RETROK_p              = 112,
+   RETROK_q              = 113,
+   RETROK_r              = 114,
+   RETROK_s              = 115,
+   RETROK_t              = 116,
+   RETROK_u              = 117,
+   RETROK_v              = 118,
+   RETROK_w              = 119,
+   RETROK_x              = 120,
+   RETROK_y              = 121,
+   RETROK_z              = 122,
+   RETROK_LEFTBRACE      = 123,
+   RETROK_BAR            = 124,
+   RETROK_RIGHTBRACE     = 125,
+   RETROK_TILDE          = 126,
+   RETROK_DELETE         = 127,
+
+   RETROK_KP0            = 256,
+   RETROK_KP1            = 257,
+   RETROK_KP2            = 258,
+   RETROK_KP3            = 259,
+   RETROK_KP4            = 260,
+   RETROK_KP5            = 261,
+   RETROK_KP6            = 262,
+   RETROK_KP7            = 263,
+   RETROK_KP8            = 264,
+   RETROK_KP9            = 265,
+   RETROK_KP_PERIOD      = 266,
+   RETROK_KP_DIVIDE      = 267,
+   RETROK_KP_MULTIPLY    = 268,
+   RETROK_KP_MINUS       = 269,
+   RETROK_KP_PLUS        = 270,
+   RETROK_KP_ENTER       = 271,
+   RETROK_KP_EQUALS      = 272,
+
+   RETROK_UP             = 273,
+   RETROK_DOWN           = 274,
+   RETROK_RIGHT          = 275,
+   RETROK_LEFT           = 276,
+   RETROK_INSERT         = 277,
+   RETROK_HOME           = 278,
+   RETROK_END            = 279,
+   RETROK_PAGEUP         = 280,
+   RETROK_PAGEDOWN       = 281,
+
+   RETROK_F1             = 282,
+   RETROK_F2             = 283,
+   RETROK_F3             = 284,
+   RETROK_F4             = 285,
+   RETROK_F5             = 286,
+   RETROK_F6             = 287,
+   RETROK_F7             = 288,
+   RETROK_F8             = 289,
+   RETROK_F9             = 290,
+   RETROK_F10            = 291,
+   RETROK_F11            = 292,
+   RETROK_F12            = 293,
+   RETROK_F13            = 294,
+   RETROK_F14            = 295,
+   RETROK_F15            = 296,
+
+   RETROK_NUMLOCK        = 300,
+   RETROK_CAPSLOCK       = 301,
+   RETROK_SCROLLOCK      = 302,
+   RETROK_RSHIFT         = 303,
+   RETROK_LSHIFT         = 304,
+   RETROK_RCTRL          = 305,
+   RETROK_LCTRL          = 306,
+   RETROK_RALT           = 307,
+   RETROK_LALT           = 308,
+   RETROK_RMETA          = 309,
+   RETROK_LMETA          = 310,
+   RETROK_LSUPER         = 311,
+   RETROK_RSUPER         = 312,
+   RETROK_MODE           = 313,
+   RETROK_COMPOSE        = 314,
+
+   RETROK_HELP           = 315,
+   RETROK_PRINT          = 316,
+   RETROK_SYSREQ         = 317,
+   RETROK_BREAK          = 318,
+   RETROK_MENU           = 319,
+   RETROK_POWER          = 320,
+   RETROK_EURO           = 321,
+   RETROK_UNDO           = 322,
+   RETROK_OEM_102        = 323,
+
+   RETROK_LAST,
+
+   RETROK_DUMMY          = INT_MAX /* Ensure sizeof(enum) == sizeof(int) */
+};
+
+enum retro_mod
+{
+   RETROKMOD_NONE       = 0x0000,
+
+   RETROKMOD_SHIFT      = 0x01,
+   RETROKMOD_CTRL       = 0x02,
+   RETROKMOD_ALT        = 0x04,
+   RETROKMOD_META       = 0x08,
+
+   RETROKMOD_NUMLOCK    = 0x10,
+   RETROKMOD_CAPSLOCK   = 0x20,
+   RETROKMOD_SCROLLOCK  = 0x40,
+
+   RETROKMOD_DUMMY = INT_MAX /* Ensure sizeof(enum) == sizeof(int) */
+};
+
+/* If set, this call is not part of the public libretro API yet. It can
+ * change or be removed at any time. */
+#define RETRO_ENVIRONMENT_EXPERIMENTAL 0x10000
+/* Environment callback to be used internally in frontend. */
+#define RETRO_ENVIRONMENT_PRIVATE 0x20000
+
+/* Environment commands. */
+#define RETRO_ENVIRONMENT_SET_ROTATION  1  /* const unsigned * --
+                                            * Sets screen rotation of graphics.
+                                            * Valid values are 0, 1, 2, 3, which rotates screen by 0, 90, 180,
+                                            * 270 degrees counter-clockwise respectively.
+                                            */
+#define RETRO_ENVIRONMENT_GET_OVERSCAN  2  /* bool * --
+                                            * NOTE: As of 2019 this callback is considered deprecated in favor of
+                                            * using core options to manage overscan in a more nuanced, core-specific way.
+                                            *
+                                            * Boolean value whether or not the implementation should use overscan,
+                                            * or crop away overscan.
+                                            */
+#define RETRO_ENVIRONMENT_GET_CAN_DUPE  3  /* bool * --
+                                            * Boolean value whether or not frontend supports frame duping,
+                                            * passing NULL to video frame callback.
+                                            */
+
+                                           /* Environ 4, 5 are no longer supported (GET_VARIABLE / SET_VARIABLES),
+                                            * and reserved to avoid possible ABI clash.
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_MESSAGE   6  /* const struct retro_message * --
+                                            * Sets a message to be displayed in implementation-specific manner
+                                            * for a certain amount of 'frames'.
+                                            * Should not be used for trivial messages, which should simply be
+                                            * logged via RETRO_ENVIRONMENT_GET_LOG_INTERFACE (or as a
+                                            * fallback, stderr).
+                                            */
+#define RETRO_ENVIRONMENT_SHUTDOWN      7  /* N/A (NULL) --
+                                            * Requests the frontend to shutdown.
+                                            * Should only be used if game has a specific
+                                            * way to shutdown the game from a menu item or similar.
+                                            */
+#define RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL 8
+                                           /* const unsigned * --
+                                            * Gives a hint to the frontend how demanding this implementation
+                                            * is on a system. E.g. reporting a level of 2 means
+                                            * this implementation should run decently on all frontends
+                                            * of level 2 and up.
+                                            *
+                                            * It can be used by the frontend to potentially warn
+                                            * about too demanding implementations.
+                                            *
+                                            * The levels are "floating".
+                                            *
+                                            * This function can be called on a per-game basis,
+                                            * as certain games an implementation can play might be
+                                            * particularly demanding.
+                                            * If called, it should be called in retro_load_game().
+                                            */
+#define RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY 9
+                                           /* const char ** --
+                                            * Returns the "system" directory of the frontend.
+                                            * This directory can be used to store system specific
+                                            * content such as BIOSes, configuration data, etc.
+                                            * The returned value can be NULL.
+                                            * If so, no such directory is defined,
+                                            * and it's up to the implementation to find a suitable directory.
+                                            *
+                                            * NOTE: Some cores used this folder also for "save" data such as
+                                            * memory cards, etc, for lack of a better place to put it.
+                                            * This is now discouraged, and if possible, cores should try to
+                                            * use the new GET_SAVE_DIRECTORY.
+                                            */
+#define RETRO_ENVIRONMENT_SET_PIXEL_FORMAT 10
+                                           /* const enum retro_pixel_format * --
+                                            * Sets the internal pixel format used by the implementation.
+                                            * The default pixel format is RETRO_PIXEL_FORMAT_0RGB1555.
+                                            * This pixel format however, is deprecated (see enum retro_pixel_format).
+                                            * If the call returns false, the frontend does not support this pixel
+                                            * format.
+                                            *
+                                            * This function should be called inside retro_load_game() or
+                                            * retro_get_system_av_info().
+                                            */
+#define RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS 11
+                                           /* const struct retro_input_descriptor * --
+                                            * Sets an array of retro_input_descriptors.
+                                            * It is up to the frontend to present this in a usable way.
+                                            * The array is terminated by retro_input_descriptor::description
+                                            * being set to NULL.
+                                            * This function can be called at any time, but it is recommended
+                                            * to call it as early as possible.
+                                            */
+#define RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK 12
+                                           /* const struct retro_keyboard_callback * --
+                                            * Sets a callback function used to notify core about keyboard events.
+                                            */
+#define RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE 13
+                                           /* const struct retro_disk_control_callback * --
+                                            * Sets an interface which frontend can use to eject and insert
+                                            * disk images.
+                                            * This is used for games which consist of multiple images and
+                                            * must be manually swapped out by the user (e.g. PSX).
+                                            */
+#define RETRO_ENVIRONMENT_SET_HW_RENDER 14
+                                           /* struct retro_hw_render_callback * --
+                                            * Sets an interface to let a libretro core render with
+                                            * hardware acceleration.
+                                            * Should be called in retro_load_game().
+                                            * If successful, libretro cores will be able to render to a
+                                            * frontend-provided framebuffer.
+                                            * The size of this framebuffer will be at least as large as
+                                            * max_width/max_height provided in get_av_info().
+                                            * If HW rendering is used, pass only RETRO_HW_FRAME_BUFFER_VALID or
+                                            * NULL to retro_video_refresh_t.
+                                            */
+#define RETRO_ENVIRONMENT_GET_VARIABLE 15
+                                           /* struct retro_variable * --
+                                            * Interface to acquire user-defined information from environment
+                                            * that cannot feasibly be supported in a multi-system way.
+                                            * 'key' should be set to a key which has already been set by
+                                            * SET_VARIABLES.
+                                            * 'data' will be set to a value or NULL.
+                                            */
+#define RETRO_ENVIRONMENT_SET_VARIABLES 16
+                                           /* const struct retro_variable * --
+                                            * Allows an implementation to signal the environment
+                                            * which variables it might want to check for later using
+                                            * GET_VARIABLE.
+                                            * This allows the frontend to present these variables to
+                                            * a user dynamically.
+                                            * This should be called the first time as early as
+                                            * possible (ideally in retro_set_environment).
+                                            * Afterward it may be called again for the core to communicate
+                                            * updated options to the frontend, but the number of core
+                                            * options must not change from the number in the initial call.
+                                            *
+                                            * 'data' points to an array of retro_variable structs
+                                            * terminated by a { NULL, NULL } element.
+                                            * retro_variable::key should be namespaced to not collide
+                                            * with other implementations' keys. E.g. A core called
+                                            * 'foo' should use keys named as 'foo_option'.
+                                            * retro_variable::value should contain a human readable
+                                            * description of the key as well as a '|' delimited list
+                                            * of expected values.
+                                            *
+                                            * The number of possible options should be very limited,
+                                            * i.e. it should be feasible to cycle through options
+                                            * without a keyboard.
+                                            *
+                                            * First entry should be treated as a default.
+                                            *
+                                            * Example entry:
+                                            * { "foo_option", "Speed hack coprocessor X; false|true" }
+                                            *
+                                            * Text before first ';' is description. This ';' must be
+                                            * followed by a space, and followed by a list of possible
+                                            * values split up with '|'.
+                                            *
+                                            * Only strings are operated on. The possible values will
+                                            * generally be displayed and stored as-is by the frontend.
+                                            */
+#define RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE 17
+                                           /* bool * --
+                                            * Result is set to true if some variables are updated by
+                                            * frontend since last call to RETRO_ENVIRONMENT_GET_VARIABLE.
+                                            * Variables should be queried with GET_VARIABLE.
+                                            */
+#define RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME 18
+                                           /* const bool * --
+                                            * If true, the libretro implementation supports calls to
+                                            * retro_load_game() with NULL as argument.
+                                            * Used by cores which can run without particular game data.
+                                            * This should be called within retro_set_environment() only.
+                                            */
+#define RETRO_ENVIRONMENT_GET_LIBRETRO_PATH 19
+                                           /* const char ** --
+                                            * Retrieves the absolute path from where this libretro
+                                            * implementation was loaded.
+                                            * NULL is returned if the libretro was loaded statically
+                                            * (i.e. linked statically to frontend), or if the path cannot be
+                                            * determined.
+                                            * Mostly useful in cooperation with SET_SUPPORT_NO_GAME as assets can
+                                            * be loaded without ugly hacks.
+                                            */
+
+                                           /* Environment 20 was an obsolete version of SET_AUDIO_CALLBACK.
+                                            * It was not used by any known core at the time,
+                                            * and was removed from the API. */
+#define RETRO_ENVIRONMENT_SET_FRAME_TIME_CALLBACK 21
+                                           /* const struct retro_frame_time_callback * --
+                                            * Lets the core know how much time has passed since last
+                                            * invocation of retro_run().
+                                            * The frontend can tamper with the timing to fake fast-forward,
+                                            * slow-motion, frame stepping, etc.
+                                            * In this case the delta time will use the reference value
+                                            * in frame_time_callback..
+                                            */
+#define RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK 22
+                                           /* const struct retro_audio_callback * --
+                                            * Sets an interface which is used to notify a libretro core about audio
+                                            * being available for writing.
+                                            * The callback can be called from any thread, so a core using this must
+                                            * have a thread safe audio implementation.
+                                            * It is intended for games where audio and video are completely
+                                            * asynchronous and audio can be generated on the fly.
+                                            * This interface is not recommended for use with emulators which have
+                                            * highly synchronous audio.
+                                            *
+                                            * The callback only notifies about writability; the libretro core still
+                                            * has to call the normal audio callbacks
+                                            * to write audio. The audio callbacks must be called from within the
+                                            * notification callback.
+                                            * The amount of audio data to write is up to the implementation.
+                                            * Generally, the audio callback will be called continously in a loop.
+                                            *
+                                            * Due to thread safety guarantees and lack of sync between audio and
+                                            * video, a frontend  can selectively disallow this interface based on
+                                            * internal configuration. A core using this interface must also
+                                            * implement the "normal" audio interface.
+                                            *
+                                            * A libretro core using SET_AUDIO_CALLBACK should also make use of
+                                            * SET_FRAME_TIME_CALLBACK.
+                                            */
+#define RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE 23
+                                           /* struct retro_rumble_interface * --
+                                            * Gets an interface which is used by a libretro core to set
+                                            * state of rumble motors in controllers.
+                                            * A strong and weak motor is supported, and they can be
+                                            * controlled indepedently.
+                                            */
+#define RETRO_ENVIRONMENT_GET_INPUT_DEVICE_CAPABILITIES 24
+                                           /* uint64_t * --
+                                            * Gets a bitmask telling which device type are expected to be
+                                            * handled properly in a call to retro_input_state_t.
+                                            * Devices which are not handled or recognized always return
+                                            * 0 in retro_input_state_t.
+                                            * Example bitmask: caps = (1 << RETRO_DEVICE_JOYPAD) | (1 << RETRO_DEVICE_ANALOG).
+                                            * Should only be called in retro_run().
+                                            */
+#define RETRO_ENVIRONMENT_GET_SENSOR_INTERFACE (25 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* struct retro_sensor_interface * --
+                                            * Gets access to the sensor interface.
+                                            * The purpose of this interface is to allow
+                                            * setting state related to sensors such as polling rate,
+                                            * enabling/disable it entirely, etc.
+                                            * Reading sensor state is done via the normal
+                                            * input_state_callback API.
+                                            */
+#define RETRO_ENVIRONMENT_GET_CAMERA_INTERFACE (26 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* struct retro_camera_callback * --
+                                            * Gets an interface to a video camera driver.
+                                            * A libretro core can use this interface to get access to a
+                                            * video camera.
+                                            * New video frames are delivered in a callback in same
+                                            * thread as retro_run().
+                                            *
+                                            * GET_CAMERA_INTERFACE should be called in retro_load_game().
+                                            *
+                                            * Depending on the camera implementation used, camera frames
+                                            * will be delivered as a raw framebuffer,
+                                            * or as an OpenGL texture directly.
+                                            *
+                                            * The core has to tell the frontend here which types of
+                                            * buffers can be handled properly.
+                                            * An OpenGL texture can only be handled when using a
+                                            * libretro GL core (SET_HW_RENDER).
+                                            * It is recommended to use a libretro GL core when
+                                            * using camera interface.
+                                            *
+                                            * The camera is not started automatically. The retrieved start/stop
+                                            * functions must be used to explicitly
+                                            * start and stop the camera driver.
+                                            */
+#define RETRO_ENVIRONMENT_GET_LOG_INTERFACE 27
+                                           /* struct retro_log_callback * --
+                                            * Gets an interface for logging. This is useful for
+                                            * logging in a cross-platform way
+                                            * as certain platforms cannot use stderr for logging.
+                                            * It also allows the frontend to
+                                            * show logging information in a more suitable way.
+                                            * If this interface is not used, libretro cores should
+                                            * log to stderr as desired.
+                                            */
+#define RETRO_ENVIRONMENT_GET_PERF_INTERFACE 28
+                                           /* struct retro_perf_callback * --
+                                            * Gets an interface for performance counters. This is useful
+                                            * for performance logging in a cross-platform way and for detecting
+                                            * architecture-specific features, such as SIMD support.
+                                            */
+#define RETRO_ENVIRONMENT_GET_LOCATION_INTERFACE 29
+                                           /* struct retro_location_callback * --
+                                            * Gets access to the location interface.
+                                            * The purpose of this interface is to be able to retrieve
+                                            * location-based information from the host device,
+                                            * such as current latitude / longitude.
+                                            */
+#define RETRO_ENVIRONMENT_GET_CONTENT_DIRECTORY 30 /* Old name, kept for compatibility. */
+#define RETRO_ENVIRONMENT_GET_CORE_ASSETS_DIRECTORY 30
+                                           /* const char ** --
+                                            * Returns the "core assets" directory of the frontend.
+                                            * This directory can be used to store specific assets that the
+                                            * core relies upon, such as art assets,
+                                            * input data, etc etc.
+                                            * The returned value can be NULL.
+                                            * If so, no such directory is defined,
+                                            * and it's up to the implementation to find a suitable directory.
+                                            */
+#define RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY 31
+                                           /* const char ** --
+                                            * Returns the "save" directory of the frontend, unless there is no
+                                            * save directory available. The save directory should be used to
+                                            * store SRAM, memory cards, high scores, etc, if the libretro core
+                                            * cannot use the regular memory interface (retro_get_memory_data()).
+                                            *
+                                            * If the frontend cannot designate a save directory, it will return
+                                            * NULL to indicate that the core should attempt to operate without a
+                                            * save directory set.
+                                            *
+                                            * NOTE: early libretro cores used the system directory for save
+                                            * files. Cores that need to be backwards-compatible can still check
+                                            * GET_SYSTEM_DIRECTORY.
+                                            */
+#define RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO 32
+                                           /* const struct retro_system_av_info * --
+                                            * Sets a new av_info structure. This can only be called from
+                                            * within retro_run().
+                                            * This should *only* be used if the core is completely altering the
+                                            * internal resolutions, aspect ratios, timings, sampling rate, etc.
+                                            * Calling this can require a full reinitialization of video/audio
+                                            * drivers in the frontend,
+                                            *
+                                            * so it is important to call it very sparingly, and usually only with
+                                            * the users explicit consent.
+                                            * An eventual driver reinitialize will happen so that video and
+                                            * audio callbacks
+                                            * happening after this call within the same retro_run() call will
+                                            * target the newly initialized driver.
+                                            *
+                                            * This callback makes it possible to support configurable resolutions
+                                            * in games, which can be useful to
+                                            * avoid setting the "worst case" in max_width/max_height.
+                                            *
+                                            * ***HIGHLY RECOMMENDED*** Do not call this callback every time
+                                            * resolution changes in an emulator core if it's
+                                            * expected to be a temporary change, for the reasons of possible
+                                            * driver reinitialization.
+                                            * This call is not a free pass for not trying to provide
+                                            * correct values in retro_get_system_av_info(). If you need to change
+                                            * things like aspect ratio or nominal width/height,
+                                            * use RETRO_ENVIRONMENT_SET_GEOMETRY, which is a softer variant
+                                            * of SET_SYSTEM_AV_INFO.
+                                            *
+                                            * If this returns false, the frontend does not acknowledge a
+                                            * changed av_info struct.
+                                            */
+#define RETRO_ENVIRONMENT_SET_PROC_ADDRESS_CALLBACK 33
+                                           /* const struct retro_get_proc_address_interface * --
+                                            * Allows a libretro core to announce support for the
+                                            * get_proc_address() interface.
+                                            * This interface allows for a standard way to extend libretro where
+                                            * use of environment calls are too indirect,
+                                            * e.g. for cases where the frontend wants to call directly into the core.
+                                            *
+                                            * If a core wants to expose this interface, SET_PROC_ADDRESS_CALLBACK
+                                            * **MUST** be called from within retro_set_environment().
+                                            */
+#define RETRO_ENVIRONMENT_SET_SUBSYSTEM_INFO 34
+                                           /* const struct retro_subsystem_info * --
+                                            * This environment call introduces the concept of libretro "subsystems".
+                                            * A subsystem is a variant of a libretro core which supports
+                                            * different kinds of games.
+                                            * The purpose of this is to support e.g. emulators which might
+                                            * have special needs, e.g. Super Nintendo's Super GameBoy, Sufami Turbo.
+                                            * It can also be used to pick among subsystems in an explicit way
+                                            * if the libretro implementation is a multi-system emulator itself.
+                                            *
+                                            * Loading a game via a subsystem is done with retro_load_game_special(),
+                                            * and this environment call allows a libretro core to expose which
+                                            * subsystems are supported for use with retro_load_game_special().
+                                            * A core passes an array of retro_game_special_info which is terminated
+                                            * with a zeroed out retro_game_special_info struct.
+                                            *
+                                            * If a core wants to use this functionality, SET_SUBSYSTEM_INFO
+                                            * **MUST** be called from within retro_set_environment().
+                                            */
+#define RETRO_ENVIRONMENT_SET_CONTROLLER_INFO 35
+                                           /* const struct retro_controller_info * --
+                                            * This environment call lets a libretro core tell the frontend
+                                            * which controller subclasses are recognized in calls to
+                                            * retro_set_controller_port_device().
+                                            *
+                                            * Some emulators such as Super Nintendo support multiple lightgun
+                                            * types which must be specifically selected from. It is therefore
+                                            * sometimes necessary for a frontend to be able to tell the core
+                                            * about a special kind of input device which is not specifcally
+                                            * provided by the Libretro API.
+                                            *
+                                            * In order for a frontend to understand the workings of those devices,
+                                            * they must be defined as a specialized subclass of the generic device
+                                            * types already defined in the libretro API.
+                                            *
+                                            * The core must pass an array of const struct retro_controller_info which
+                                            * is terminated with a blanked out struct. Each element of the
+                                            * retro_controller_info struct corresponds to the ascending port index
+                                            * that is passed to retro_set_controller_port_device() when that function
+                                            * is called to indicate to the core that the frontend has changed the
+                                            * active device subclass. SEE ALSO: retro_set_controller_port_device()
+                                            *
+                                            * The ascending input port indexes provided by the core in the struct
+                                            * are generally presented by frontends as ascending User # or Player #,
+                                            * such as Player 1, Player 2, Player 3, etc. Which device subclasses are
+                                            * supported can vary per input port.
+                                            *
+                                            * The first inner element of each entry in the retro_controller_info array
+                                            * is a retro_controller_description struct that specifies the names and
+                                            * codes of all device subclasses that are available for the corresponding
+                                            * User or Player, beginning with the generic Libretro device that the
+                                            * subclasses are derived from. The second inner element of each entry is the
+                                            * total number of subclasses that are listed in the retro_controller_description.
+                                            *
+                                            * NOTE: Even if special device types are set in the libretro core,
+                                            * libretro should only poll input based on the base input device types.
+                                            */
+#define RETRO_ENVIRONMENT_SET_MEMORY_MAPS (36 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* const struct retro_memory_map * --
+                                            * This environment call lets a libretro core tell the frontend
+                                            * about the memory maps this core emulates.
+                                            * This can be used to implement, for example, cheats in a core-agnostic way.
+                                            *
+                                            * Should only be used by emulators; it doesn't make much sense for
+                                            * anything else.
+                                            * It is recommended to expose all relevant pointers through
+                                            * retro_get_memory_* as well.
+                                            *
+                                            * Can be called from retro_init and retro_load_game.
+                                            */
+#define RETRO_ENVIRONMENT_SET_GEOMETRY 37
+                                           /* const struct retro_game_geometry * --
+                                            * This environment call is similar to SET_SYSTEM_AV_INFO for changing
+                                            * video parameters, but provides a guarantee that drivers will not be
+                                            * reinitialized.
+                                            * This can only be called from within retro_run().
+                                            *
+                                            * The purpose of this call is to allow a core to alter nominal
+                                            * width/heights as well as aspect ratios on-the-fly, which can be
+                                            * useful for some emulators to change in run-time.
+                                            *
+                                            * max_width/max_height arguments are ignored and cannot be changed
+                                            * with this call as this could potentially require a reinitialization or a
+                                            * non-constant time operation.
+                                            * If max_width/max_height are to be changed, SET_SYSTEM_AV_INFO is required.
+                                            *
+                                            * A frontend must guarantee that this environment call completes in
+                                            * constant time.
+                                            */
+#define RETRO_ENVIRONMENT_GET_USERNAME 38
+                                           /* const char **
+                                            * Returns the specified username of the frontend, if specified by the user.
+                                            * This username can be used as a nickname for a core that has online facilities
+                                            * or any other mode where personalization of the user is desirable.
+                                            * The returned value can be NULL.
+                                            * If this environ callback is used by a core that requires a valid username,
+                                            * a default username should be specified by the core.
+                                            */
+#define RETRO_ENVIRONMENT_GET_LANGUAGE 39
+                                           /* unsigned * --
+                                            * Returns the specified language of the frontend, if specified by the user.
+                                            * It can be used by the core for localization purposes.
+                                            */
+#define RETRO_ENVIRONMENT_GET_CURRENT_SOFTWARE_FRAMEBUFFER (40 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* struct retro_framebuffer * --
+                                            * Returns a preallocated framebuffer which the core can use for rendering
+                                            * the frame into when not using SET_HW_RENDER.
+                                            * The framebuffer returned from this call must not be used
+                                            * after the current call to retro_run() returns.
+                                            *
+                                            * The goal of this call is to allow zero-copy behavior where a core
+                                            * can render directly into video memory, avoiding extra bandwidth cost by copying
+                                            * memory from core to video memory.
+                                            *
+                                            * If this call succeeds and the core renders into it,
+                                            * the framebuffer pointer and pitch can be passed to retro_video_refresh_t.
+                                            * If the buffer from GET_CURRENT_SOFTWARE_FRAMEBUFFER is to be used,
+                                            * the core must pass the exact
+                                            * same pointer as returned by GET_CURRENT_SOFTWARE_FRAMEBUFFER;
+                                            * i.e. passing a pointer which is offset from the
+                                            * buffer is undefined. The width, height and pitch parameters
+                                            * must also match exactly to the values obtained from GET_CURRENT_SOFTWARE_FRAMEBUFFER.
+                                            *
+                                            * It is possible for a frontend to return a different pixel format
+                                            * than the one used in SET_PIXEL_FORMAT. This can happen if the frontend
+                                            * needs to perform conversion.
+                                            *
+                                            * It is still valid for a core to render to a different buffer
+                                            * even if GET_CURRENT_SOFTWARE_FRAMEBUFFER succeeds.
+                                            *
+                                            * A frontend must make sure that the pointer obtained from this function is
+                                            * writeable (and readable).
+                                            */
+#define RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE (41 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* const struct retro_hw_render_interface ** --
+                                            * Returns an API specific rendering interface for accessing API specific data.
+                                            * Not all HW rendering APIs support or need this.
+                                            * The contents of the returned pointer is specific to the rendering API
+                                            * being used. See the various headers like libretro_vulkan.h, etc.
+                                            *
+                                            * GET_HW_RENDER_INTERFACE cannot be called before context_reset has been called.
+                                            * Similarly, after context_destroyed callback returns,
+                                            * the contents of the HW_RENDER_INTERFACE are invalidated.
+                                            */
+#define RETRO_ENVIRONMENT_SET_SUPPORT_ACHIEVEMENTS (42 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* const bool * --
+                                            * If true, the libretro implementation supports achievements
+                                            * either via memory descriptors set with RETRO_ENVIRONMENT_SET_MEMORY_MAPS
+                                            * or via retro_get_memory_data/retro_get_memory_size.
+                                            *
+                                            * This must be called before the first call to retro_run.
+                                            */
+#define RETRO_ENVIRONMENT_SET_HW_RENDER_CONTEXT_NEGOTIATION_INTERFACE (43 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* const struct retro_hw_render_context_negotiation_interface * --
+                                            * Sets an interface which lets the libretro core negotiate with frontend how a context is created.
+                                            * The semantics of this interface depends on which API is used in SET_HW_RENDER earlier.
+                                            * This interface will be used when the frontend is trying to create a HW rendering context,
+                                            * so it will be used after SET_HW_RENDER, but before the context_reset callback.
+                                            */
+#define RETRO_ENVIRONMENT_SET_SERIALIZATION_QUIRKS 44
+                                           /* uint64_t * --
+                                            * Sets quirk flags associated with serialization. The frontend will zero any flags it doesn't
+                                            * recognize or support. Should be set in either retro_init or retro_load_game, but not both.
+                                            */
+#define RETRO_ENVIRONMENT_SET_HW_SHARED_CONTEXT (44 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* N/A (null) * --
+                                            * The frontend will try to use a 'shared' hardware context (mostly applicable
+                                            * to OpenGL) when a hardware context is being set up.
+                                            *
+                                            * Returns true if the frontend supports shared hardware contexts and false
+                                            * if the frontend does not support shared hardware contexts.
+                                            *
+                                            * This will do nothing on its own until SET_HW_RENDER env callbacks are
+                                            * being used.
+                                            */
+#define RETRO_ENVIRONMENT_GET_VFS_INTERFACE (45 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* struct retro_vfs_interface_info * --
+                                            * Gets access to the VFS interface.
+                                            * VFS presence needs to be queried prior to load_game or any
+                                            * get_system/save/other_directory being called to let front end know
+                                            * core supports VFS before it starts handing out paths.
+                                            * It is recomended to do so in retro_set_environment
+                                            */
+#define RETRO_ENVIRONMENT_GET_LED_INTERFACE (46 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* struct retro_led_interface * --
+                                            * Gets an interface which is used by a libretro core to set
+                                            * state of LEDs.
+                                            */
+#define RETRO_ENVIRONMENT_GET_AUDIO_VIDEO_ENABLE (47 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* int * --
+                                            * Tells the core if the frontend wants audio or video.
+                                            * If disabled, the frontend will discard the audio or video,
+                                            * so the core may decide to skip generating a frame or generating audio.
+                                            * This is mainly used for increasing performance.
+                                            * Bit 0 (value 1): Enable Video
+                                            * Bit 1 (value 2): Enable Audio
+                                            * Bit 2 (value 4): Use Fast Savestates.
+                                            * Bit 3 (value 8): Hard Disable Audio
+                                            * Other bits are reserved for future use and will default to zero.
+                                            * If video is disabled:
+                                            * * The frontend wants the core to not generate any video,
+                                            *   including presenting frames via hardware acceleration.
+                                            * * The frontend's video frame callback will do nothing.
+                                            * * After running the frame, the video output of the next frame should be
+                                            *   no different than if video was enabled, and saving and loading state
+                                            *   should have no issues.
+                                            * If audio is disabled:
+                                            * * The frontend wants the core to not generate any audio.
+                                            * * The frontend's audio callbacks will do nothing.
+                                            * * After running the frame, the audio output of the next frame should be
+                                            *   no different than if audio was enabled, and saving and loading state
+                                            *   should have no issues.
+                                            * Fast Savestates:
+                                            * * Guaranteed to be created by the same binary that will load them.
+                                            * * Will not be written to or read from the disk.
+                                            * * Suggest that the core assumes loading state will succeed.
+                                            * * Suggest that the core updates its memory buffers in-place if possible.
+                                            * * Suggest that the core skips clearing memory.
+                                            * * Suggest that the core skips resetting the system.
+                                            * * Suggest that the core may skip validation steps.
+                                            * Hard Disable Audio:
+                                            * * Used for a secondary core when running ahead.
+                                            * * Indicates that the frontend will never need audio from the core.
+                                            * * Suggests that the core may stop synthesizing audio, but this should not
+                                            *   compromise emulation accuracy.
+                                            * * Audio output for the next frame does not matter, and the frontend will
+                                            *   never need an accurate audio state in the future.
+                                            * * State will never be saved when using Hard Disable Audio.
+                                            */
+#define RETRO_ENVIRONMENT_GET_MIDI_INTERFACE (48 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                           /* struct retro_midi_interface ** --
+                                            * Returns a MIDI interface that can be used for raw data I/O.
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_FASTFORWARDING (49 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                            /* bool * --
+                                            * Boolean value that indicates whether or not the frontend is in
+                                            * fastforwarding mode.
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_TARGET_REFRESH_RATE (50 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                            /* float * --
+                                            * Float value that lets us know what target refresh rate
+                                            * is curently in use by the frontend.
+                                            *
+                                            * The core can use the returned value to set an ideal
+                                            * refresh rate/framerate.
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_INPUT_BITMASKS (51 | RETRO_ENVIRONMENT_EXPERIMENTAL)
+                                            /* bool * --
+                                            * Boolean value that indicates whether or not the frontend supports
+                                            * input bitmasks being returned by retro_input_state_t. The advantage
+                                            * of this is that retro_input_state_t has to be only called once to
+                                            * grab all button states instead of multiple times.
+                                            *
+                                            * If it returns true, you can pass RETRO_DEVICE_ID_JOYPAD_MASK as 'id'
+                                            * to retro_input_state_t (make sure 'device' is set to RETRO_DEVICE_JOYPAD).
+                                            * It will return a bitmask of all the digital buttons.
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION 52
+                                           /* unsigned * --
+                                            * Unsigned value is the API version number of the core options
+                                            * interface supported by the frontend. If callback return false,
+                                            * API version is assumed to be 0.
+                                            *
+                                            * In legacy code, core options are set by passing an array of
+                                            * retro_variable structs to RETRO_ENVIRONMENT_SET_VARIABLES.
+                                            * This may be still be done regardless of the core options
+                                            * interface version.
+                                            *
+                                            * If version is >= 1 however, core options may instead be set by
+                                            * passing an array of retro_core_option_definition structs to
+                                            * RETRO_ENVIRONMENT_SET_CORE_OPTIONS, or a 2D array of
+                                            * retro_core_option_definition structs to RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL.
+                                            * This allows the core to additionally set option sublabel information
+                                            * and/or provide localisation support.
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_CORE_OPTIONS 53
+                                           /* const struct retro_core_option_definition ** --
+                                            * Allows an implementation to signal the environment
+                                            * which variables it might want to check for later using
+                                            * GET_VARIABLE.
+                                            * This allows the frontend to present these variables to
+                                            * a user dynamically.
+                                            * This should only be called if RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION
+                                            * returns an API version of >= 1.
+                                            * This should be called instead of RETRO_ENVIRONMENT_SET_VARIABLES.
+                                            * This should be called the first time as early as
+                                            * possible (ideally in retro_set_environment).
+                                            * Afterwards it may be called again for the core to communicate
+                                            * updated options to the frontend, but the number of core
+                                            * options must not change from the number in the initial call.
+                                            *
+                                            * 'data' points to an array of retro_core_option_definition structs
+                                            * terminated by a { NULL, NULL, NULL, {{0}}, NULL } element.
+                                            * retro_core_option_definition::key should be namespaced to not collide
+                                            * with other implementations' keys. e.g. A core called
+                                            * 'foo' should use keys named as 'foo_option'.
+                                            * retro_core_option_definition::desc should contain a human readable
+                                            * description of the key.
+                                            * retro_core_option_definition::info should contain any additional human
+                                            * readable information text that a typical user may need to
+                                            * understand the functionality of the option.
+                                            * retro_core_option_definition::values is an array of retro_core_option_value
+                                            * structs terminated by a { NULL, NULL } element.
+                                            * > retro_core_option_definition::values[index].value is an expected option
+                                            *   value.
+                                            * > retro_core_option_definition::values[index].label is a human readable
+                                            *   label used when displaying the value on screen. If NULL,
+                                            *   the value itself is used.
+                                            * retro_core_option_definition::default_value is the default core option
+                                            * setting. It must match one of the expected option values in the
+                                            * retro_core_option_definition::values array. If it does not, or the
+                                            * default value is NULL, the first entry in the
+                                            * retro_core_option_definition::values array is treated as the default.
+                                            *
+                                            * The number of possible options should be very limited,
+                                            * and must be less than RETRO_NUM_CORE_OPTION_VALUES_MAX.
+                                            * i.e. it should be feasible to cycle through options
+                                            * without a keyboard.
+                                            *
+                                            * Example entry:
+                                            * {
+                                            *     "foo_option",
+                                            *     "Speed hack coprocessor X",
+                                            *     "Provides increased performance at the expense of reduced accuracy",
+                                            * 	  {
+                                            *         { "false",    NULL },
+                                            *         { "true",     NULL },
+                                            *         { "unstable", "Turbo (Unstable)" },
+                                            *         { NULL, NULL },
+                                            *     },
+                                            *     "false"
+                                            * }
+                                            *
+                                            * Only strings are operated on. The possible values will
+                                            * generally be displayed and stored as-is by the frontend.
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL 54
+                                           /* const struct retro_core_options_intl * --
+                                            * Allows an implementation to signal the environment
+                                            * which variables it might want to check for later using
+                                            * GET_VARIABLE.
+                                            * This allows the frontend to present these variables to
+                                            * a user dynamically.
+                                            * This should only be called if RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION
+                                            * returns an API version of >= 1.
+                                            * This should be called instead of RETRO_ENVIRONMENT_SET_VARIABLES.
+                                            * This should be called the first time as early as
+                                            * possible (ideally in retro_set_environment).
+                                            * Afterwards it may be called again for the core to communicate
+                                            * updated options to the frontend, but the number of core
+                                            * options must not change from the number in the initial call.
+                                            *
+                                            * This is fundamentally the same as RETRO_ENVIRONMENT_SET_CORE_OPTIONS,
+                                            * with the addition of localisation support. The description of the
+                                            * RETRO_ENVIRONMENT_SET_CORE_OPTIONS callback should be consulted
+                                            * for further details.
+                                            *
+                                            * 'data' points to a retro_core_options_intl struct.
+                                            *
+                                            * retro_core_options_intl::us is a pointer to an array of
+                                            * retro_core_option_definition structs defining the US English
+                                            * core options implementation. It must point to a valid array.
+                                            *
+                                            * retro_core_options_intl::local is a pointer to an array of
+                                            * retro_core_option_definition structs defining core options for
+                                            * the current frontend language. It may be NULL (in which case
+                                            * retro_core_options_intl::us is used by the frontend). Any items
+                                            * missing from this array will be read from retro_core_options_intl::us
+                                            * instead.
+                                            *
+                                            * NOTE: Default core option values are always taken from the
+                                            * retro_core_options_intl::us array. Any default values in
+                                            * retro_core_options_intl::local array will be ignored.
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_CORE_OPTIONS_DISPLAY 55
+                                           /* struct retro_core_option_display * --
+                                            *
+                                            * Allows an implementation to signal the environment to show
+                                            * or hide a variable when displaying core options. This is
+                                            * considered a *suggestion*. The frontend is free to ignore
+                                            * this callback, and its implementation not considered mandatory.
+                                            *
+                                            * 'data' points to a retro_core_option_display struct
+                                            *
+                                            * retro_core_option_display::key is a variable identifier
+                                            * which has already been set by SET_VARIABLES/SET_CORE_OPTIONS.
+                                            *
+                                            * retro_core_option_display::visible is a boolean, specifying
+                                            * whether variable should be displayed
+                                            *
+                                            * Note that all core option variables will be set visible by
+                                            * default when calling SET_VARIABLES/SET_CORE_OPTIONS.
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_PREFERRED_HW_RENDER 56
+                                           /* unsigned * --
+                                            *
+                                            * Allows an implementation to ask frontend preferred hardware
+                                            * context to use. Core should use this information to deal
+                                            * with what specific context to request with SET_HW_RENDER.
+                                            *
+                                            * 'data' points to an unsigned variable
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_DISK_CONTROL_INTERFACE_VERSION 57
+                                           /* unsigned * --
+                                            * Unsigned value is the API version number of the disk control
+                                            * interface supported by the frontend. If callback return false,
+                                            * API version is assumed to be 0.
+                                            *
+                                            * In legacy code, the disk control interface is defined by passing
+                                            * a struct of type retro_disk_control_callback to
+                                            * RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE.
+                                            * This may be still be done regardless of the disk control
+                                            * interface version.
+                                            *
+                                            * If version is >= 1 however, the disk control interface may
+                                            * instead be defined by passing a struct of type
+                                            * retro_disk_control_ext_callback to
+                                            * RETRO_ENVIRONMENT_SET_DISK_CONTROL_EXT_INTERFACE.
+                                            * This allows the core to provide additional information about
+                                            * disk images to the frontend and/or enables extra
+                                            * disk control functionality by the frontend.
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_DISK_CONTROL_EXT_INTERFACE 58
+                                           /* const struct retro_disk_control_ext_callback * --
+                                            * Sets an interface which frontend can use to eject and insert
+                                            * disk images, and also obtain information about individual
+                                            * disk image files registered by the core.
+                                            * This is used for games which consist of multiple images and
+                                            * must be manually swapped out by the user (e.g. PSX, floppy disk
+                                            * based systems).
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_MESSAGE_INTERFACE_VERSION 59
+                                           /* unsigned * --
+                                            * Unsigned value is the API version number of the message
+                                            * interface supported by the frontend. If callback returns
+                                            * false, API version is assumed to be 0.
+                                            *
+                                            * In legacy code, messages may be displayed in an
+                                            * implementation-specific manner by passing a struct
+                                            * of type retro_message to RETRO_ENVIRONMENT_SET_MESSAGE.
+                                            * This may be still be done regardless of the message
+                                            * interface version.
+                                            *
+                                            * If version is >= 1 however, messages may instead be
+                                            * displayed by passing a struct of type retro_message_ext
+                                            * to RETRO_ENVIRONMENT_SET_MESSAGE_EXT. This allows the
+                                            * core to specify message logging level, priority and
+                                            * destination (OSD, logging interface or both).
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_MESSAGE_EXT 60
+                                           /* const struct retro_message_ext * --
+                                            * Sets a message to be displayed in an implementation-specific
+                                            * manner for a certain amount of 'frames'. Additionally allows
+                                            * the core to specify message logging level, priority and
+                                            * destination (OSD, logging interface or both).
+                                            * Should not be used for trivial messages, which should simply be
+                                            * logged via RETRO_ENVIRONMENT_GET_LOG_INTERFACE (or as a
+                                            * fallback, stderr).
+                                            */
+
+#define RETRO_ENVIRONMENT_GET_INPUT_MAX_USERS 61
+                                           /* unsigned * --
+                                            * Unsigned value is the number of active input devices
+                                            * provided by the frontend. This may change between
+                                            * frames, but will remain constant for the duration
+                                            * of each frame.
+                                            * If callback returns true, a core need not poll any
+                                            * input device with an index greater than or equal to
+                                            * the number of active devices.
+                                            * If callback returns false, the number of active input
+                                            * devices is unknown. In this case, all input devices
+                                            * should be considered active.
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK 62
+                                           /* const struct retro_audio_buffer_status_callback * --
+                                            * Lets the core know the occupancy level of the frontend
+                                            * audio buffer. Can be used by a core to attempt frame
+                                            * skipping in order to avoid buffer under-runs.
+                                            * A core may pass NULL to disable buffer status reporting
+                                            * in the frontend.
+                                            */
+
+#define RETRO_ENVIRONMENT_SET_MINIMUM_AUDIO_LATENCY 63
+                                           /* const unsigned * --
+                                            * Sets minimum frontend audio latency in milliseconds.
+                                            * Resultant audio latency may be larger than set value,
+                                            * or smaller if a hardware limit is encountered. A frontend
+                                            * is expected to honour requests up to 512 ms.
+                                            *
+                                            * - If value is less than current frontend
+                                            *   audio latency, callback has no effect
+                                            * - If value is zero, default frontend audio
+                                            *   latency is set
+                                            *
+                                            * May be used by a core to increase audio latency and
+                                            * therefore decrease the probability of buffer under-runs
+                                            * (crackling) when performing 'intensive' operations.
+                                            * A core utilising RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK
+                                            * to implement audio-buffer-based frame skipping may achieve
+                                            * optimal results by setting the audio latency to a 'high'
+                                            * (typically 6x or 8x) integer multiple of the expected
+                                            * frame time.
+                                            *
+                                            * WARNING: This can only be called from within retro_run().
+                                            * Calling this can require a full reinitialization of audio
+                                            * drivers in the frontend, so it is important to call it very
+                                            * sparingly, and usually only with the users explicit consent.
+                                            * An eventual driver reinitialize will happen so that audio
+                                            * callbacks happening after this call within the same retro_run()
+                                            * call will target the newly initialized driver.
+                                            */
+
+/* VFS functionality */
+
+/* File paths:
+ * File paths passed as parameters when using this API shall be well formed UNIX-style,
+ * using "/" (unquoted forward slash) as directory separator regardless of the platform's native separator.
+ * Paths shall also include at least one forward slash ("game.bin" is an invalid path, use "./game.bin" instead).
+ * Other than the directory separator, cores shall not make assumptions about path format:
+ * "C:/path/game.bin", "http://example.com/game.bin", "#game/game.bin", "./game.bin" (without quotes) are all valid paths.
+ * Cores may replace the basename or remove path components from the end, and/or add new components;
+ * however, cores shall not append "./", "../" or multiple consecutive forward slashes ("//") to paths they request to front end.
+ * The frontend is encouraged to make such paths work as well as it can, but is allowed to give up if the core alters paths too much.
+ * Frontends are encouraged, but not required, to support native file system paths (modulo replacing the directory separator, if applicable).
+ * Cores are allowed to try using them, but must remain functional if the front rejects such requests.
+ * Cores are encouraged to use the libretro-common filestream functions for file I/O,
+ * as they seamlessly integrate with VFS, deal with directory separator replacement as appropriate
+ * and provide platform-specific fallbacks in cases where front ends do not support VFS. */
+
+/* Opaque file handle
+ * Introduced in VFS API v1 */
+struct retro_vfs_file_handle;
+
+/* Opaque directory handle
+ * Introduced in VFS API v3 */
+struct retro_vfs_dir_handle;
+
+/* File open flags
+ * Introduced in VFS API v1 */
+#define RETRO_VFS_FILE_ACCESS_READ            (1 << 0) /* Read only mode */
+#define RETRO_VFS_FILE_ACCESS_WRITE           (1 << 1) /* Write only mode, discard contents and overwrites existing file unless RETRO_VFS_FILE_ACCESS_UPDATE is also specified */
+#define RETRO_VFS_FILE_ACCESS_READ_WRITE      (RETRO_VFS_FILE_ACCESS_READ | RETRO_VFS_FILE_ACCESS_WRITE) /* Read-write mode, discard contents and overwrites existing file unless RETRO_VFS_FILE_ACCESS_UPDATE is also specified*/
+#define RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING (1 << 2) /* Prevents discarding content of existing files opened for writing */
+
+/* These are only hints. The frontend may choose to ignore them. Other than RAM/CPU/etc use,
+   and how they react to unlikely external interference (for example someone else writing to that file,
+   or the file's server going down), behavior will not change. */
+#define RETRO_VFS_FILE_ACCESS_HINT_NONE              (0)
+/* Indicate that the file will be accessed many times. The frontend should aggressively cache everything. */
+#define RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS   (1 << 0)
+
+/* Seek positions */
+#define RETRO_VFS_SEEK_POSITION_START    0
+#define RETRO_VFS_SEEK_POSITION_CURRENT  1
+#define RETRO_VFS_SEEK_POSITION_END      2
+
+/* stat() result flags
+ * Introduced in VFS API v3 */
+#define RETRO_VFS_STAT_IS_VALID               (1 << 0)
+#define RETRO_VFS_STAT_IS_DIRECTORY           (1 << 1)
+#define RETRO_VFS_STAT_IS_CHARACTER_SPECIAL   (1 << 2)
+
+/* Get path from opaque handle. Returns the exact same path passed to file_open when getting the handle
+ * Introduced in VFS API v1 */
+typedef const char *(RETRO_CALLCONV *retro_vfs_get_path_t)(struct retro_vfs_file_handle *stream);
+
+/* Open a file for reading or writing. If path points to a directory, this will
+ * fail. Returns the opaque file handle, or NULL for error.
+ * Introduced in VFS API v1 */
+typedef struct retro_vfs_file_handle *(RETRO_CALLCONV *retro_vfs_open_t)(const char *path, unsigned mode, unsigned hints);
+
+/* Close the file and release its resources. Must be called if open_file returns non-NULL. Returns 0 on success, -1 on failure.
+ * Whether the call succeeds ot not, the handle passed as parameter becomes invalid and should no longer be used.
+ * Introduced in VFS API v1 */
+typedef int (RETRO_CALLCONV *retro_vfs_close_t)(struct retro_vfs_file_handle *stream);
+
+/* Return the size of the file in bytes, or -1 for error.
+ * Introduced in VFS API v1 */
+typedef int64_t (RETRO_CALLCONV *retro_vfs_size_t)(struct retro_vfs_file_handle *stream);
+
+/* Truncate file to specified size. Returns 0 on success or -1 on error
+ * Introduced in VFS API v2 */
+typedef int64_t (RETRO_CALLCONV *retro_vfs_truncate_t)(struct retro_vfs_file_handle *stream, int64_t length);
+
+/* Get the current read / write position for the file. Returns -1 for error.
+ * Introduced in VFS API v1 */
+typedef int64_t (RETRO_CALLCONV *retro_vfs_tell_t)(struct retro_vfs_file_handle *stream);
+
+/* Set the current read/write position for the file. Returns the new position, -1 for error.
+ * Introduced in VFS API v1 */
+typedef int64_t (RETRO_CALLCONV *retro_vfs_seek_t)(struct retro_vfs_file_handle *stream, int64_t offset, int seek_position);
+
+/* Read data from a file. Returns the number of bytes read, or -1 for error.
+ * Introduced in VFS API v1 */
+typedef int64_t (RETRO_CALLCONV *retro_vfs_read_t)(struct retro_vfs_file_handle *stream, void *s, uint64_t len);
+
+/* Write data to a file. Returns the number of bytes written, or -1 for error.
+ * Introduced in VFS API v1 */
+typedef int64_t (RETRO_CALLCONV *retro_vfs_write_t)(struct retro_vfs_file_handle *stream, const void *s, uint64_t len);
+
+/* Flush pending writes to file, if using buffered IO. Returns 0 on sucess, or -1 on failure.
+ * Introduced in VFS API v1 */
+typedef int (RETRO_CALLCONV *retro_vfs_flush_t)(struct retro_vfs_file_handle *stream);
+
+/* Delete the specified file. Returns 0 on success, -1 on failure
+ * Introduced in VFS API v1 */
+typedef int (RETRO_CALLCONV *retro_vfs_remove_t)(const char *path);
+
+/* Rename the specified file. Returns 0 on success, -1 on failure
+ * Introduced in VFS API v1 */
+typedef int (RETRO_CALLCONV *retro_vfs_rename_t)(const char *old_path, const char *new_path);
+
+/* Stat the specified file. Retruns a bitmask of RETRO_VFS_STAT_* flags, none are set if path was not valid.
+ * Additionally stores file size in given variable, unless NULL is given.
+ * Introduced in VFS API v3 */
+typedef int (RETRO_CALLCONV *retro_vfs_stat_t)(const char *path, int32_t *size);
+
+/* Create the specified directory. Returns 0 on success, -1 on unknown failure, -2 if already exists.
+ * Introduced in VFS API v3 */
+typedef int (RETRO_CALLCONV *retro_vfs_mkdir_t)(const char *dir);
+
+/* Open the specified directory for listing. Returns the opaque dir handle, or NULL for error.
+ * Support for the include_hidden argument may vary depending on the platform.
+ * Introduced in VFS API v3 */
+typedef struct retro_vfs_dir_handle *(RETRO_CALLCONV *retro_vfs_opendir_t)(const char *dir, bool include_hidden);
+
+/* Read the directory entry at the current position, and move the read pointer to the next position.
+ * Returns true on success, false if already on the last entry.
+ * Introduced in VFS API v3 */
+typedef bool (RETRO_CALLCONV *retro_vfs_readdir_t)(struct retro_vfs_dir_handle *dirstream);
+
+/* Get the name of the last entry read. Returns a string on success, or NULL for error.
+ * The returned string pointer is valid until the next call to readdir or closedir.
+ * Introduced in VFS API v3 */
+typedef const char *(RETRO_CALLCONV *retro_vfs_dirent_get_name_t)(struct retro_vfs_dir_handle *dirstream);
+
+/* Check if the last entry read was a directory. Returns true if it was, false otherwise (or on error).
+ * Introduced in VFS API v3 */
+typedef bool (RETRO_CALLCONV *retro_vfs_dirent_is_dir_t)(struct retro_vfs_dir_handle *dirstream);
+
+/* Close the directory and release its resources. Must be called if opendir returns non-NULL. Returns 0 on success, -1 on failure.
+ * Whether the call succeeds ot not, the handle passed as parameter becomes invalid and should no longer be used.
+ * Introduced in VFS API v3 */
+typedef int (RETRO_CALLCONV *retro_vfs_closedir_t)(struct retro_vfs_dir_handle *dirstream);
+
+struct retro_vfs_interface
+{
+   /* VFS API v1 */
+	retro_vfs_get_path_t get_path;
+	retro_vfs_open_t open;
+	retro_vfs_close_t close;
+	retro_vfs_size_t size;
+	retro_vfs_tell_t tell;
+	retro_vfs_seek_t seek;
+	retro_vfs_read_t read;
+	retro_vfs_write_t write;
+	retro_vfs_flush_t flush;
+	retro_vfs_remove_t remove;
+	retro_vfs_rename_t rename;
+   /* VFS API v2 */
+   retro_vfs_truncate_t truncate;
+   /* VFS API v3 */
+   retro_vfs_stat_t stat;
+   retro_vfs_mkdir_t mkdir;
+   retro_vfs_opendir_t opendir;
+   retro_vfs_readdir_t readdir;
+   retro_vfs_dirent_get_name_t dirent_get_name;
+   retro_vfs_dirent_is_dir_t dirent_is_dir;
+   retro_vfs_closedir_t closedir;
+};
+
+struct retro_vfs_interface_info
+{
+   /* Set by core: should this be higher than the version the front end supports,
+    * front end will return false in the RETRO_ENVIRONMENT_GET_VFS_INTERFACE call
+    * Introduced in VFS API v1 */
+   uint32_t required_interface_version;
+
+   /* Frontend writes interface pointer here. The frontend also sets the actual
+    * version, must be at least required_interface_version.
+    * Introduced in VFS API v1 */
+   struct retro_vfs_interface *iface;
+};
+
+enum retro_hw_render_interface_type
+{
+	RETRO_HW_RENDER_INTERFACE_VULKAN = 0,
+	RETRO_HW_RENDER_INTERFACE_D3D9   = 1,
+	RETRO_HW_RENDER_INTERFACE_D3D10  = 2,
+	RETRO_HW_RENDER_INTERFACE_D3D11  = 3,
+	RETRO_HW_RENDER_INTERFACE_D3D12  = 4,
+   RETRO_HW_RENDER_INTERFACE_GSKIT_PS2  = 5,
+   RETRO_HW_RENDER_INTERFACE_DUMMY  = INT_MAX
+};
+
+/* Base struct. All retro_hw_render_interface_* types
+ * contain at least these fields. */
+struct retro_hw_render_interface
+{
+   enum retro_hw_render_interface_type interface_type;
+   unsigned interface_version;
+};
+
+typedef void (RETRO_CALLCONV *retro_set_led_state_t)(int led, int state);
+struct retro_led_interface
+{
+    retro_set_led_state_t set_led_state;
+};
+
+/* Retrieves the current state of the MIDI input.
+ * Returns true if it's enabled, false otherwise. */
+typedef bool (RETRO_CALLCONV *retro_midi_input_enabled_t)(void);
+
+/* Retrieves the current state of the MIDI output.
+ * Returns true if it's enabled, false otherwise */
+typedef bool (RETRO_CALLCONV *retro_midi_output_enabled_t)(void);
+
+/* Reads next byte from the input stream.
+ * Returns true if byte is read, false otherwise. */
+typedef bool (RETRO_CALLCONV *retro_midi_read_t)(uint8_t *byte);
+
+/* Writes byte to the output stream.
+ * 'delta_time' is in microseconds and represent time elapsed since previous write.
+ * Returns true if byte is written, false otherwise. */
+typedef bool (RETRO_CALLCONV *retro_midi_write_t)(uint8_t byte, uint32_t delta_time);
+
+/* Flushes previously written data.
+ * Returns true if successful, false otherwise. */
+typedef bool (RETRO_CALLCONV *retro_midi_flush_t)(void);
+
+struct retro_midi_interface
+{
+   retro_midi_input_enabled_t input_enabled;
+   retro_midi_output_enabled_t output_enabled;
+   retro_midi_read_t read;
+   retro_midi_write_t write;
+   retro_midi_flush_t flush;
+};
+
+enum retro_hw_render_context_negotiation_interface_type
+{
+   RETRO_HW_RENDER_CONTEXT_NEGOTIATION_INTERFACE_VULKAN = 0,
+   RETRO_HW_RENDER_CONTEXT_NEGOTIATION_INTERFACE_DUMMY = INT_MAX
+};
+
+/* Base struct. All retro_hw_render_context_negotiation_interface_* types
+ * contain at least these fields. */
+struct retro_hw_render_context_negotiation_interface
+{
+   enum retro_hw_render_context_negotiation_interface_type interface_type;
+   unsigned interface_version;
+};
+
+/* Serialized state is incomplete in some way. Set if serialization is
+ * usable in typical end-user cases but should not be relied upon to
+ * implement frame-sensitive frontend features such as netplay or
+ * rerecording. */
+#define RETRO_SERIALIZATION_QUIRK_INCOMPLETE (1 << 0)
+/* The core must spend some time initializing before serialization is
+ * supported. retro_serialize() will initially fail; retro_unserialize()
+ * and retro_serialize_size() may or may not work correctly either. */
+#define RETRO_SERIALIZATION_QUIRK_MUST_INITIALIZE (1 << 1)
+/* Serialization size may change within a session. */
+#define RETRO_SERIALIZATION_QUIRK_CORE_VARIABLE_SIZE (1 << 2)
+/* Set by the frontend to acknowledge that it supports variable-sized
+ * states. */
+#define RETRO_SERIALIZATION_QUIRK_FRONT_VARIABLE_SIZE (1 << 3)
+/* Serialized state can only be loaded during the same session. */
+#define RETRO_SERIALIZATION_QUIRK_SINGLE_SESSION (1 << 4)
+/* Serialized state cannot be loaded on an architecture with a different
+ * endianness from the one it was saved on. */
+#define RETRO_SERIALIZATION_QUIRK_ENDIAN_DEPENDENT (1 << 5)
+/* Serialized state cannot be loaded on a different platform from the one it
+ * was saved on for reasons other than endianness, such as word size
+ * dependence */
+#define RETRO_SERIALIZATION_QUIRK_PLATFORM_DEPENDENT (1 << 6)
+
+#define RETRO_MEMDESC_CONST      (1 << 0)   /* The frontend will never change this memory area once retro_load_game has returned. */
+#define RETRO_MEMDESC_BIGENDIAN  (1 << 1)   /* The memory area contains big endian data. Default is little endian. */
+#define RETRO_MEMDESC_SYSTEM_RAM (1 << 2)   /* The memory area is system RAM.  This is main RAM of the gaming system. */
+#define RETRO_MEMDESC_SAVE_RAM   (1 << 3)   /* The memory area is save RAM. This RAM is usually found on a game cartridge, backed up by a battery. */
+#define RETRO_MEMDESC_VIDEO_RAM  (1 << 4)   /* The memory area is video RAM (VRAM) */
+#define RETRO_MEMDESC_ALIGN_2    (1 << 16)  /* All memory access in this area is aligned to their own size, or 2, whichever is smaller. */
+#define RETRO_MEMDESC_ALIGN_4    (2 << 16)
+#define RETRO_MEMDESC_ALIGN_8    (3 << 16)
+#define RETRO_MEMDESC_MINSIZE_2  (1 << 24)  /* All memory in this region is accessed at least 2 bytes at the time. */
+#define RETRO_MEMDESC_MINSIZE_4  (2 << 24)
+#define RETRO_MEMDESC_MINSIZE_8  (3 << 24)
+struct retro_memory_descriptor
+{
+   uint64_t flags;
+
+   /* Pointer to the start of the relevant ROM or RAM chip.
+    * It's strongly recommended to use 'offset' if possible, rather than
+    * doing math on the pointer.
+    *
+    * If the same byte is mapped my multiple descriptors, their descriptors
+    * must have the same pointer.
+    * If 'start' does not point to the first byte in the pointer, put the
+    * difference in 'offset' instead.
+    *
+    * May be NULL if there's nothing usable here (e.g. hardware registers and
+    * open bus). No flags should be set if the pointer is NULL.
+    * It's recommended to minimize the number of descriptors if possible,
+    * but not mandatory. */
+   void *ptr;
+   size_t offset;
+
+   /* This is the location in the emulated address space
+    * where the mapping starts. */
+   size_t start;
+
+   /* Which bits must be same as in 'start' for this mapping to apply.
+    * The first memory descriptor to claim a certain byte is the one
+    * that applies.
+    * A bit which is set in 'start' must also be set in this.
+    * Can be zero, in which case each byte is assumed mapped exactly once.
+    * In this case, 'len' must be a power of two. */
+   size_t select;
+
+   /* If this is nonzero, the set bits are assumed not connected to the
+    * memory chip's address pins. */
+   size_t disconnect;
+
+   /* This one tells the size of the current memory area.
+    * If, after start+disconnect are applied, the address is higher than
+    * this, the highest bit of the address is cleared.
+    *
+    * If the address is still too high, the next highest bit is cleared.
+    * Can be zero, in which case it's assumed to be infinite (as limited
+    * by 'select' and 'disconnect'). */
+   size_t len;
+
+   /* To go from emulated address to physical address, the following
+    * order applies:
+    * Subtract 'start', pick off 'disconnect', apply 'len', add 'offset'. */
+
+   /* The address space name must consist of only a-zA-Z0-9_-,
+    * should be as short as feasible (maximum length is 8 plus the NUL),
+    * and may not be any other address space plus one or more 0-9A-F
+    * at the end.
+    * However, multiple memory descriptors for the same address space is
+    * allowed, and the address space name can be empty. NULL is treated
+    * as empty.
+    *
+    * Address space names are case sensitive, but avoid lowercase if possible.
+    * The same pointer may exist in multiple address spaces.
+    *
+    * Examples:
+    * blank+blank - valid (multiple things may be mapped in the same namespace)
+    * 'Sp'+'Sp' - valid (multiple things may be mapped in the same namespace)
+    * 'A'+'B' - valid (neither is a prefix of each other)
+    * 'S'+blank - valid ('S' is not in 0-9A-F)
+    * 'a'+blank - valid ('a' is not in 0-9A-F)
+    * 'a'+'A' - valid (neither is a prefix of each other)
+    * 'AR'+blank - valid ('R' is not in 0-9A-F)
+    * 'ARB'+blank - valid (the B can't be part of the address either, because
+    *                      there is no namespace 'AR')
+    * blank+'B' - not valid, because it's ambigous which address space B1234
+    *             would refer to.
+    * The length can't be used for that purpose; the frontend may want
+    * to append arbitrary data to an address, without a separator. */
+   const char *addrspace;
+
+   /* TODO: When finalizing this one, add a description field, which should be
+    * "WRAM" or something roughly equally long. */
+
+   /* TODO: When finalizing this one, replace 'select' with 'limit', which tells
+    * which bits can vary and still refer to the same address (limit = ~select).
+    * TODO: limit? range? vary? something else? */
+
+   /* TODO: When finalizing this one, if 'len' is above what 'select' (or
+    * 'limit') allows, it's bankswitched. Bankswitched data must have both 'len'
+    * and 'select' != 0, and the mappings don't tell how the system switches the
+    * banks. */
+
+   /* TODO: When finalizing this one, fix the 'len' bit removal order.
+    * For len=0x1800, pointer 0x1C00 should go to 0x1400, not 0x0C00.
+    * Algorithm: Take bits highest to lowest, but if it goes above len, clear
+    * the most recent addition and continue on the next bit.
+    * TODO: Can the above be optimized? Is "remove the lowest bit set in both
+    * pointer and 'len'" equivalent? */
+
+   /* TODO: Some emulators (MAME?) emulate big endian systems by only accessing
+    * the emulated memory in 32-bit chunks, native endian. But that's nothing
+    * compared to Darek Mihocka <http://www.emulators.com/docs/nx07_vm101.htm>
+    * (section Emulation 103 - Nearly Free Byte Reversal) - he flips the ENTIRE
+    * RAM backwards! I'll want to represent both of those, via some flags.
+    *
+    * I suspect MAME either didn't think of that idea, or don't want the #ifdef.
+    * Not sure which, nor do I really care. */
+
+   /* TODO: Some of those flags are unused and/or don't really make sense. Clean
+    * them up. */
+};
+
+/* The frontend may use the largest value of 'start'+'select' in a
+ * certain namespace to infer the size of the address space.
+ *
+ * If the address space is larger than that, a mapping with .ptr=NULL
+ * should be at the end of the array, with .select set to all ones for
+ * as long as the address space is big.
+ *
+ * Sample descriptors (minus .ptr, and RETRO_MEMFLAG_ on the flags):
+ * SNES WRAM:
+ * .start=0x7E0000, .len=0x20000
+ * (Note that this must be mapped before the ROM in most cases; some of the
+ * ROM mappers
+ * try to claim $7E0000, or at least $7E8000.)
+ * SNES SPC700 RAM:
+ * .addrspace="S", .len=0x10000
+ * SNES WRAM mirrors:
+ * .flags=MIRROR, .start=0x000000, .select=0xC0E000, .len=0x2000
+ * .flags=MIRROR, .start=0x800000, .select=0xC0E000, .len=0x2000
+ * SNES WRAM mirrors, alternate equivalent descriptor:
+ * .flags=MIRROR, .select=0x40E000, .disconnect=~0x1FFF
+ * (Various similar constructions can be created by combining parts of
+ * the above two.)
+ * SNES LoROM (512KB, mirrored a couple of times):
+ * .flags=CONST, .start=0x008000, .select=0x408000, .disconnect=0x8000, .len=512*1024
+ * .flags=CONST, .start=0x400000, .select=0x400000, .disconnect=0x8000, .len=512*1024
+ * SNES HiROM (4MB):
+ * .flags=CONST,                 .start=0x400000, .select=0x400000, .len=4*1024*1024
+ * .flags=CONST, .offset=0x8000, .start=0x008000, .select=0x408000, .len=4*1024*1024
+ * SNES ExHiROM (8MB):
+ * .flags=CONST, .offset=0,                  .start=0xC00000, .select=0xC00000, .len=4*1024*1024
+ * .flags=CONST, .offset=4*1024*1024,        .start=0x400000, .select=0xC00000, .len=4*1024*1024
+ * .flags=CONST, .offset=0x8000,             .start=0x808000, .select=0xC08000, .len=4*1024*1024
+ * .flags=CONST, .offset=4*1024*1024+0x8000, .start=0x008000, .select=0xC08000, .len=4*1024*1024
+ * Clarify the size of the address space:
+ * .ptr=NULL, .select=0xFFFFFF
+ * .len can be implied by .select in many of them, but was included for clarity.
+ */
+
+struct retro_memory_map
+{
+   const struct retro_memory_descriptor *descriptors;
+   unsigned num_descriptors;
+};
+
+struct retro_controller_description
+{
+   /* Human-readable description of the controller. Even if using a generic
+    * input device type, this can be set to the particular device type the
+    * core uses. */
+   const char *desc;
+
+   /* Device type passed to retro_set_controller_port_device(). If the device
+    * type is a sub-class of a generic input device type, use the
+    * RETRO_DEVICE_SUBCLASS macro to create an ID.
+    *
+    * E.g. RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 1). */
+   unsigned id;
+};
+
+struct retro_controller_info
+{
+   const struct retro_controller_description *types;
+   unsigned num_types;
+};
+
+struct retro_subsystem_memory_info
+{
+   /* The extension associated with a memory type, e.g. "psram". */
+   const char *extension;
+
+   /* The memory type for retro_get_memory(). This should be at
+    * least 0x100 to avoid conflict with standardized
+    * libretro memory types. */
+   unsigned type;
+};
+
+struct retro_subsystem_rom_info
+{
+   /* Describes what the content is (SGB BIOS, GB ROM, etc). */
+   const char *desc;
+
+   /* Same definition as retro_get_system_info(). */
+   const char *valid_extensions;
+
+   /* Same definition as retro_get_system_info(). */
+   bool need_fullpath;
+
+   /* Same definition as retro_get_system_info(). */
+   bool block_extract;
+
+   /* This is set if the content is required to load a game.
+    * If this is set to false, a zeroed-out retro_game_info can be passed. */
+   bool required;
+
+   /* Content can have multiple associated persistent
+    * memory types (retro_get_memory()). */
+   const struct retro_subsystem_memory_info *memory;
+   unsigned num_memory;
+};
+
+struct retro_subsystem_info
+{
+   /* Human-readable string of the subsystem type, e.g. "Super GameBoy" */
+   const char *desc;
+
+   /* A computer friendly short string identifier for the subsystem type.
+    * This name must be [a-z].
+    * E.g. if desc is "Super GameBoy", this can be "sgb".
+    * This identifier can be used for command-line interfaces, etc.
+    */
+   const char *ident;
+
+   /* Infos for each content file. The first entry is assumed to be the
+    * "most significant" content for frontend purposes.
+    * E.g. with Super GameBoy, the first content should be the GameBoy ROM,
+    * as it is the most "significant" content to a user.
+    * If a frontend creates new file paths based on the content used
+    * (e.g. savestates), it should use the path for the first ROM to do so. */
+   const struct retro_subsystem_rom_info *roms;
+
+   /* Number of content files associated with a subsystem. */
+   unsigned num_roms;
+
+   /* The type passed to retro_load_game_special(). */
+   unsigned id;
+};
+
+typedef void (RETRO_CALLCONV *retro_proc_address_t)(void);
+
+/* libretro API extension functions:
+ * (None here so far).
+ *
+ * Get a symbol from a libretro core.
+ * Cores should only return symbols which are actual
+ * extensions to the libretro API.
+ *
+ * Frontends should not use this to obtain symbols to standard
+ * libretro entry points (static linking or dlsym).
+ *
+ * The symbol name must be equal to the function name,
+ * e.g. if void retro_foo(void); exists, the symbol must be called "retro_foo".
+ * The returned function pointer must be cast to the corresponding type.
+ */
+typedef retro_proc_address_t (RETRO_CALLCONV *retro_get_proc_address_t)(const char *sym);
+
+struct retro_get_proc_address_interface
+{
+   retro_get_proc_address_t get_proc_address;
+};
+
+enum retro_log_level
+{
+   RETRO_LOG_DEBUG = 0,
+   RETRO_LOG_INFO,
+   RETRO_LOG_WARN,
+   RETRO_LOG_ERROR,
+
+   RETRO_LOG_DUMMY = INT_MAX
+};
+
+/* Logging function. Takes log level argument as well. */
+typedef void (RETRO_CALLCONV *retro_log_printf_t)(enum retro_log_level level,
+      const char *fmt, ...);
+
+struct retro_log_callback
+{
+   retro_log_printf_t log;
+};
+
+/* Performance related functions */
+
+/* ID values for SIMD CPU features */
+#define RETRO_SIMD_SSE      (1 << 0)
+#define RETRO_SIMD_SSE2     (1 << 1)
+#define RETRO_SIMD_VMX      (1 << 2)
+#define RETRO_SIMD_VMX128   (1 << 3)
+#define RETRO_SIMD_AVX      (1 << 4)
+#define RETRO_SIMD_NEON     (1 << 5)
+#define RETRO_SIMD_SSE3     (1 << 6)
+#define RETRO_SIMD_SSSE3    (1 << 7)
+#define RETRO_SIMD_MMX      (1 << 8)
+#define RETRO_SIMD_MMXEXT   (1 << 9)
+#define RETRO_SIMD_SSE4     (1 << 10)
+#define RETRO_SIMD_SSE42    (1 << 11)
+#define RETRO_SIMD_AVX2     (1 << 12)
+#define RETRO_SIMD_VFPU     (1 << 13)
+#define RETRO_SIMD_PS       (1 << 14)
+#define RETRO_SIMD_AES      (1 << 15)
+#define RETRO_SIMD_VFPV3    (1 << 16)
+#define RETRO_SIMD_VFPV4    (1 << 17)
+#define RETRO_SIMD_POPCNT   (1 << 18)
+#define RETRO_SIMD_MOVBE    (1 << 19)
+#define RETRO_SIMD_CMOV     (1 << 20)
+#define RETRO_SIMD_ASIMD    (1 << 21)
+
+typedef uint64_t retro_perf_tick_t;
+typedef int64_t retro_time_t;
+
+struct retro_perf_counter
+{
+   const char *ident;
+   retro_perf_tick_t start;
+   retro_perf_tick_t total;
+   retro_perf_tick_t call_cnt;
+
+   bool registered;
+};
+
+/* Returns current time in microseconds.
+ * Tries to use the most accurate timer available.
+ */
+typedef retro_time_t (RETRO_CALLCONV *retro_perf_get_time_usec_t)(void);
+
+/* A simple counter. Usually nanoseconds, but can also be CPU cycles.
+ * Can be used directly if desired (when creating a more sophisticated
+ * performance counter system).
+ * */
+typedef retro_perf_tick_t (RETRO_CALLCONV *retro_perf_get_counter_t)(void);
+
+/* Returns a bit-mask of detected CPU features (RETRO_SIMD_*). */
+typedef uint64_t (RETRO_CALLCONV *retro_get_cpu_features_t)(void);
+
+/* Asks frontend to log and/or display the state of performance counters.
+ * Performance counters can always be poked into manually as well.
+ */
+typedef void (RETRO_CALLCONV *retro_perf_log_t)(void);
+
+/* Register a performance counter.
+ * ident field must be set with a discrete value and other values in
+ * retro_perf_counter must be 0.
+ * Registering can be called multiple times. To avoid calling to
+ * frontend redundantly, you can check registered field first. */
+typedef void (RETRO_CALLCONV *retro_perf_register_t)(struct retro_perf_counter *counter);
+
+/* Starts a registered counter. */
+typedef void (RETRO_CALLCONV *retro_perf_start_t)(struct retro_perf_counter *counter);
+
+/* Stops a registered counter. */
+typedef void (RETRO_CALLCONV *retro_perf_stop_t)(struct retro_perf_counter *counter);
+
+/* For convenience it can be useful to wrap register, start and stop in macros.
+ * E.g.:
+ * #ifdef LOG_PERFORMANCE
+ * #define RETRO_PERFORMANCE_INIT(perf_cb, name) static struct retro_perf_counter name = {#name}; if (!name.registered) perf_cb.perf_register(&(name))
+ * #define RETRO_PERFORMANCE_START(perf_cb, name) perf_cb.perf_start(&(name))
+ * #define RETRO_PERFORMANCE_STOP(perf_cb, name) perf_cb.perf_stop(&(name))
+ * #else
+ * ... Blank macros ...
+ * #endif
+ *
+ * These can then be used mid-functions around code snippets.
+ *
+ * extern struct retro_perf_callback perf_cb;  * Somewhere in the core.
+ *
+ * void do_some_heavy_work(void)
+ * {
+ *    RETRO_PERFORMANCE_INIT(cb, work_1;
+ *    RETRO_PERFORMANCE_START(cb, work_1);
+ *    heavy_work_1();
+ *    RETRO_PERFORMANCE_STOP(cb, work_1);
+ *
+ *    RETRO_PERFORMANCE_INIT(cb, work_2);
+ *    RETRO_PERFORMANCE_START(cb, work_2);
+ *    heavy_work_2();
+ *    RETRO_PERFORMANCE_STOP(cb, work_2);
+ * }
+ *
+ * void retro_deinit(void)
+ * {
+ *    perf_cb.perf_log();  * Log all perf counters here for example.
+ * }
+ */
+
+struct retro_perf_callback
+{
+   retro_perf_get_time_usec_t    get_time_usec;
+   retro_get_cpu_features_t      get_cpu_features;
+
+   retro_perf_get_counter_t      get_perf_counter;
+   retro_perf_register_t         perf_register;
+   retro_perf_start_t            perf_start;
+   retro_perf_stop_t             perf_stop;
+   retro_perf_log_t              perf_log;
+};
+
+/* FIXME: Document the sensor API and work out behavior.
+ * It will be marked as experimental until then.
+ */
+enum retro_sensor_action
+{
+   RETRO_SENSOR_ACCELEROMETER_ENABLE = 0,
+   RETRO_SENSOR_ACCELEROMETER_DISABLE,
+   RETRO_SENSOR_GYROSCOPE_ENABLE,
+   RETRO_SENSOR_GYROSCOPE_DISABLE,
+   RETRO_SENSOR_ILLUMINANCE_ENABLE,
+   RETRO_SENSOR_ILLUMINANCE_DISABLE,
+
+   RETRO_SENSOR_DUMMY = INT_MAX
+};
+
+/* Id values for SENSOR types. */
+#define RETRO_SENSOR_ACCELEROMETER_X 0
+#define RETRO_SENSOR_ACCELEROMETER_Y 1
+#define RETRO_SENSOR_ACCELEROMETER_Z 2
+#define RETRO_SENSOR_GYROSCOPE_X 3
+#define RETRO_SENSOR_GYROSCOPE_Y 4
+#define RETRO_SENSOR_GYROSCOPE_Z 5
+#define RETRO_SENSOR_ILLUMINANCE 6
+
+typedef bool (RETRO_CALLCONV *retro_set_sensor_state_t)(unsigned port,
+      enum retro_sensor_action action, unsigned rate);
+
+typedef float (RETRO_CALLCONV *retro_sensor_get_input_t)(unsigned port, unsigned id);
+
+struct retro_sensor_interface
+{
+   retro_set_sensor_state_t set_sensor_state;
+   retro_sensor_get_input_t get_sensor_input;
+};
+
+enum retro_camera_buffer
+{
+   RETRO_CAMERA_BUFFER_OPENGL_TEXTURE = 0,
+   RETRO_CAMERA_BUFFER_RAW_FRAMEBUFFER,
+
+   RETRO_CAMERA_BUFFER_DUMMY = INT_MAX
+};
+
+/* Starts the camera driver. Can only be called in retro_run(). */
+typedef bool (RETRO_CALLCONV *retro_camera_start_t)(void);
+
+/* Stops the camera driver. Can only be called in retro_run(). */
+typedef void (RETRO_CALLCONV *retro_camera_stop_t)(void);
+
+/* Callback which signals when the camera driver is initialized
+ * and/or deinitialized.
+ * retro_camera_start_t can be called in initialized callback.
+ */
+typedef void (RETRO_CALLCONV *retro_camera_lifetime_status_t)(void);
+
+/* A callback for raw framebuffer data. buffer points to an XRGB8888 buffer.
+ * Width, height and pitch are similar to retro_video_refresh_t.
+ * First pixel is top-left origin.
+ */
+typedef void (RETRO_CALLCONV *retro_camera_frame_raw_framebuffer_t)(const uint32_t *buffer,
+      unsigned width, unsigned height, size_t pitch);
+
+/* A callback for when OpenGL textures are used.
+ *
+ * texture_id is a texture owned by camera driver.
+ * Its state or content should be considered immutable, except for things like
+ * texture filtering and clamping.
+ *
+ * texture_target is the texture target for the GL texture.
+ * These can include e.g. GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE, and possibly
+ * more depending on extensions.
+ *
+ * affine points to a packed 3x3 column-major matrix used to apply an affine
+ * transform to texture coordinates. (affine_matrix * vec3(coord_x, coord_y, 1.0))
+ * After transform, normalized texture coord (0, 0) should be bottom-left
+ * and (1, 1) should be top-right (or (width, height) for RECTANGLE).
+ *
+ * GL-specific typedefs are avoided here to avoid relying on gl.h in
+ * the API definition.
+ */
+typedef void (RETRO_CALLCONV *retro_camera_frame_opengl_texture_t)(unsigned texture_id,
+      unsigned texture_target, const float *affine);
+
+struct retro_camera_callback
+{
+   /* Set by libretro core.
+    * Example bitmask: caps = (1 << RETRO_CAMERA_BUFFER_OPENGL_TEXTURE) | (1 << RETRO_CAMERA_BUFFER_RAW_FRAMEBUFFER).
+    */
+   uint64_t caps;
+
+   /* Desired resolution for camera. Is only used as a hint. */
+   unsigned width;
+   unsigned height;
+
+   /* Set by frontend. */
+   retro_camera_start_t start;
+   retro_camera_stop_t stop;
+
+   /* Set by libretro core if raw framebuffer callbacks will be used. */
+   retro_camera_frame_raw_framebuffer_t frame_raw_framebuffer;
+
+   /* Set by libretro core if OpenGL texture callbacks will be used. */
+   retro_camera_frame_opengl_texture_t frame_opengl_texture;
+
+   /* Set by libretro core. Called after camera driver is initialized and
+    * ready to be started.
+    * Can be NULL, in which this callback is not called.
+    */
+   retro_camera_lifetime_status_t initialized;
+
+   /* Set by libretro core. Called right before camera driver is
+    * deinitialized.
+    * Can be NULL, in which this callback is not called.
+    */
+   retro_camera_lifetime_status_t deinitialized;
+};
+
+/* Sets the interval of time and/or distance at which to update/poll
+ * location-based data.
+ *
+ * To ensure compatibility with all location-based implementations,
+ * values for both interval_ms and interval_distance should be provided.
+ *
+ * interval_ms is the interval expressed in milliseconds.
+ * interval_distance is the distance interval expressed in meters.
+ */
+typedef void (RETRO_CALLCONV *retro_location_set_interval_t)(unsigned interval_ms,
+      unsigned interval_distance);
+
+/* Start location services. The device will start listening for changes to the
+ * current location at regular intervals (which are defined with
+ * retro_location_set_interval_t). */
+typedef bool (RETRO_CALLCONV *retro_location_start_t)(void);
+
+/* Stop location services. The device will stop listening for changes
+ * to the current location. */
+typedef void (RETRO_CALLCONV *retro_location_stop_t)(void);
+
+/* Get the position of the current location. Will set parameters to
+ * 0 if no new  location update has happened since the last time. */
+typedef bool (RETRO_CALLCONV *retro_location_get_position_t)(double *lat, double *lon,
+      double *horiz_accuracy, double *vert_accuracy);
+
+/* Callback which signals when the location driver is initialized
+ * and/or deinitialized.
+ * retro_location_start_t can be called in initialized callback.
+ */
+typedef void (RETRO_CALLCONV *retro_location_lifetime_status_t)(void);
+
+struct retro_location_callback
+{
+   retro_location_start_t         start;
+   retro_location_stop_t          stop;
+   retro_location_get_position_t  get_position;
+   retro_location_set_interval_t  set_interval;
+
+   retro_location_lifetime_status_t initialized;
+   retro_location_lifetime_status_t deinitialized;
+};
+
+enum retro_rumble_effect
+{
+   RETRO_RUMBLE_STRONG = 0,
+   RETRO_RUMBLE_WEAK = 1,
+
+   RETRO_RUMBLE_DUMMY = INT_MAX
+};
+
+/* Sets rumble state for joypad plugged in port 'port'.
+ * Rumble effects are controlled independently,
+ * and setting e.g. strong rumble does not override weak rumble.
+ * Strength has a range of [0, 0xffff].
+ *
+ * Returns true if rumble state request was honored.
+ * Calling this before first retro_run() is likely to return false. */
+typedef bool (RETRO_CALLCONV *retro_set_rumble_state_t)(unsigned port,
+      enum retro_rumble_effect effect, uint16_t strength);
+
+struct retro_rumble_interface
+{
+   retro_set_rumble_state_t set_rumble_state;
+};
+
+/* Notifies libretro that audio data should be written. */
+typedef void (RETRO_CALLCONV *retro_audio_callback_t)(void);
+
+/* True: Audio driver in frontend is active, and callback is
+ * expected to be called regularily.
+ * False: Audio driver in frontend is paused or inactive.
+ * Audio callback will not be called until set_state has been
+ * called with true.
+ * Initial state is false (inactive).
+ */
+typedef void (RETRO_CALLCONV *retro_audio_set_state_callback_t)(bool enabled);
+
+struct retro_audio_callback
+{
+   retro_audio_callback_t callback;
+   retro_audio_set_state_callback_t set_state;
+};
+
+/* Notifies a libretro core of time spent since last invocation
+ * of retro_run() in microseconds.
+ *
+ * It will be called right before retro_run() every frame.
+ * The frontend can tamper with timing to support cases like
+ * fast-forward, slow-motion and framestepping.
+ *
+ * In those scenarios the reference frame time value will be used. */
+typedef int64_t retro_usec_t;
+typedef void (RETRO_CALLCONV *retro_frame_time_callback_t)(retro_usec_t usec);
+struct retro_frame_time_callback
+{
+   retro_frame_time_callback_t callback;
+   /* Represents the time of one frame. It is computed as
+    * 1000000 / fps, but the implementation will resolve the
+    * rounding to ensure that framestepping, etc is exact. */
+   retro_usec_t reference;
+};
+
+/* Notifies a libretro core of the current occupancy
+ * level of the frontend audio buffer.
+ *
+ * - active: 'true' if audio buffer is currently
+ *           in use. Will be 'false' if audio is
+ *           disabled in the frontend
+ *
+ * - occupancy: Given as a value in the range [0,100],
+ *              corresponding to the occupancy percentage
+ *              of the audio buffer
+ *
+ * - underrun_likely: 'true' if the frontend expects an
+ *                    audio buffer underrun during the
+ *                    next frame (indicates that a core
+ *                    should attempt frame skipping)
+ *
+ * It will be called right before retro_run() every frame. */
+typedef void (RETRO_CALLCONV *retro_audio_buffer_status_callback_t)(
+      bool active, unsigned occupancy, bool underrun_likely);
+struct retro_audio_buffer_status_callback
+{
+   retro_audio_buffer_status_callback_t callback;
+};
+
+/* Pass this to retro_video_refresh_t if rendering to hardware.
+ * Passing NULL to retro_video_refresh_t is still a frame dupe as normal.
+ * */
+#define RETRO_HW_FRAME_BUFFER_VALID ((void*)-1)
+
+/* Invalidates the current HW context.
+ * Any GL state is lost, and must not be deinitialized explicitly.
+ * If explicit deinitialization is desired by the libretro core,
+ * it should implement context_destroy callback.
+ * If called, all GPU resources must be reinitialized.
+ * Usually called when frontend reinits video driver.
+ * Also called first time video driver is initialized,
+ * allowing libretro core to initialize resources.
+ */
+typedef void (RETRO_CALLCONV *retro_hw_context_reset_t)(void);
+
+/* Gets current framebuffer which is to be rendered to.
+ * Could change every frame potentially.
+ */
+typedef uintptr_t (RETRO_CALLCONV *retro_hw_get_current_framebuffer_t)(void);
+
+/* Get a symbol from HW context. */
+typedef retro_proc_address_t (RETRO_CALLCONV *retro_hw_get_proc_address_t)(const char *sym);
+
+enum retro_hw_context_type
+{
+   RETRO_HW_CONTEXT_NONE             = 0,
+   /* OpenGL 2.x. Driver can choose to use latest compatibility context. */
+   RETRO_HW_CONTEXT_OPENGL           = 1,
+   /* OpenGL ES 2.0. */
+   RETRO_HW_CONTEXT_OPENGLES2        = 2,
+   /* Modern desktop core GL context. Use version_major/
+    * version_minor fields to set GL version. */
+   RETRO_HW_CONTEXT_OPENGL_CORE      = 3,
+   /* OpenGL ES 3.0 */
+   RETRO_HW_CONTEXT_OPENGLES3        = 4,
+   /* OpenGL ES 3.1+. Set version_major/version_minor. For GLES2 and GLES3,
+    * use the corresponding enums directly. */
+   RETRO_HW_CONTEXT_OPENGLES_VERSION = 5,
+
+   /* Vulkan, see RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE. */
+   RETRO_HW_CONTEXT_VULKAN           = 6,
+
+   /* Direct3D, set version_major to select the type of interface
+    * returned by RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE */
+   RETRO_HW_CONTEXT_DIRECT3D         = 7,
+
+   RETRO_HW_CONTEXT_DUMMY = INT_MAX
+};
+
+struct retro_hw_render_callback
+{
+   /* Which API to use. Set by libretro core. */
+   enum retro_hw_context_type context_type;
+
+   /* Called when a context has been created or when it has been reset.
+    * An OpenGL context is only valid after context_reset() has been called.
+    *
+    * When context_reset is called, OpenGL resources in the libretro
+    * implementation are guaranteed to be invalid.
+    *
+    * It is possible that context_reset is called multiple times during an
+    * application lifecycle.
+    * If context_reset is called without any notification (context_destroy),
+    * the OpenGL context was lost and resources should just be recreated
+    * without any attempt to "free" old resources.
+    */
+   retro_hw_context_reset_t context_reset;
+
+   /* Set by frontend.
+    * TODO: This is rather obsolete. The frontend should not
+    * be providing preallocated framebuffers. */
+   retro_hw_get_current_framebuffer_t get_current_framebuffer;
+
+   /* Set by frontend.
+    * Can return all relevant functions, including glClear on Windows. */
+   retro_hw_get_proc_address_t get_proc_address;
+
+   /* Set if render buffers should have depth component attached.
+    * TODO: Obsolete. */
+   bool depth;
+
+   /* Set if stencil buffers should be attached.
+    * TODO: Obsolete. */
+   bool stencil;
+
+   /* If depth and stencil are true, a packed 24/8 buffer will be added.
+    * Only attaching stencil is invalid and will be ignored. */
+
+   /* Use conventional bottom-left origin convention. If false,
+    * standard libretro top-left origin semantics are used.
+    * TODO: Move to GL specific interface. */
+   bool bottom_left_origin;
+
+   /* Major version number for core GL context or GLES 3.1+. */
+   unsigned version_major;
+
+   /* Minor version number for core GL context or GLES 3.1+. */
+   unsigned version_minor;
+
+   /* If this is true, the frontend will go very far to avoid
+    * resetting context in scenarios like toggling fullscreen, etc.
+    * TODO: Obsolete? Maybe frontend should just always assume this ...
+    */
+   bool cache_context;
+
+   /* The reset callback might still be called in extreme situations
+    * such as if the context is lost beyond recovery.
+    *
+    * For optimal stability, set this to false, and allow context to be
+    * reset at any time.
+    */
+
+   /* A callback to be called before the context is destroyed in a
+    * controlled way by the frontend. */
+   retro_hw_context_reset_t context_destroy;
+
+   /* OpenGL resources can be deinitialized cleanly at this step.
+    * context_destroy can be set to NULL, in which resources will
+    * just be destroyed without any notification.
+    *
+    * Even when context_destroy is non-NULL, it is possible that
+    * context_reset is called without any destroy notification.
+    * This happens if context is lost by external factors (such as
+    * notified by GL_ARB_robustness).
+    *
+    * In this case, the context is assumed to be already dead,
+    * and the libretro implementation must not try to free any OpenGL
+    * resources in the subsequent context_reset.
+    */
+
+   /* Creates a debug context. */
+   bool debug_context;
+};
+
+/* Callback type passed in RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK.
+ * Called by the frontend in response to keyboard events.
+ * down is set if the key is being pressed, or false if it is being released.
+ * keycode is the RETROK value of the char.
+ * character is the text character of the pressed key. (UTF-32).
+ * key_modifiers is a set of RETROKMOD values or'ed together.
+ *
+ * The pressed/keycode state can be indepedent of the character.
+ * It is also possible that multiple characters are generated from a
+ * single keypress.
+ * Keycode events should be treated separately from character events.
+ * However, when possible, the frontend should try to synchronize these.
+ * If only a character is posted, keycode should be RETROK_UNKNOWN.
+ *
+ * Similarily if only a keycode event is generated with no corresponding
+ * character, character should be 0.
+ */
+typedef void (RETRO_CALLCONV *retro_keyboard_event_t)(bool down, unsigned keycode,
+      uint32_t character, uint16_t key_modifiers);
+
+struct retro_keyboard_callback
+{
+   retro_keyboard_event_t callback;
+};
+
+/* Callbacks for RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE &
+ * RETRO_ENVIRONMENT_SET_DISK_CONTROL_EXT_INTERFACE.
+ * Should be set for implementations which can swap out multiple disk
+ * images in runtime.
+ *
+ * If the implementation can do this automatically, it should strive to do so.
+ * However, there are cases where the user must manually do so.
+ *
+ * Overview: To swap a disk image, eject the disk image with
+ * set_eject_state(true).
+ * Set the disk index with set_image_index(index). Insert the disk again
+ * with set_eject_state(false).
+ */
+
+/* If ejected is true, "ejects" the virtual disk tray.
+ * When ejected, the disk image index can be set.
+ */
+typedef bool (RETRO_CALLCONV *retro_set_eject_state_t)(bool ejected);
+
+/* Gets current eject state. The initial state is 'not ejected'. */
+typedef bool (RETRO_CALLCONV *retro_get_eject_state_t)(void);
+
+/* Gets current disk index. First disk is index 0.
+ * If return value is >= get_num_images(), no disk is currently inserted.
+ */
+typedef unsigned (RETRO_CALLCONV *retro_get_image_index_t)(void);
+
+/* Sets image index. Can only be called when disk is ejected.
+ * The implementation supports setting "no disk" by using an
+ * index >= get_num_images().
+ */
+typedef bool (RETRO_CALLCONV *retro_set_image_index_t)(unsigned index);
+
+/* Gets total number of images which are available to use. */
+typedef unsigned (RETRO_CALLCONV *retro_get_num_images_t)(void);
+
+struct retro_game_info;
+
+/* Replaces the disk image associated with index.
+ * Arguments to pass in info have same requirements as retro_load_game().
+ * Virtual disk tray must be ejected when calling this.
+ *
+ * Replacing a disk image with info = NULL will remove the disk image
+ * from the internal list.
+ * As a result, calls to get_image_index() can change.
+ *
+ * E.g. replace_image_index(1, NULL), and previous get_image_index()
+ * returned 4 before.
+ * Index 1 will be removed, and the new index is 3.
+ */
+typedef bool (RETRO_CALLCONV *retro_replace_image_index_t)(unsigned index,
+      const struct retro_game_info *info);
+
+/* Adds a new valid index (get_num_images()) to the internal disk list.
+ * This will increment subsequent return values from get_num_images() by 1.
+ * This image index cannot be used until a disk image has been set
+ * with replace_image_index. */
+typedef bool (RETRO_CALLCONV *retro_add_image_index_t)(void);
+
+/* Sets initial image to insert in drive when calling
+ * core_load_game().
+ * Since we cannot pass the initial index when loading
+ * content (this would require a major API change), this
+ * is set by the frontend *before* calling the core's
+ * retro_load_game()/retro_load_game_special() implementation.
+ * A core should therefore cache the index/path values and handle
+ * them inside retro_load_game()/retro_load_game_special().
+ * - If 'index' is invalid (index >= get_num_images()), the
+ *   core should ignore the set value and instead use 0
+ * - 'path' is used purely for error checking - i.e. when
+ *   content is loaded, the core should verify that the
+ *   disk specified by 'index' has the specified file path.
+ *   This is to guard against auto selecting the wrong image
+ *   if (for example) the user should modify an existing M3U
+ *   playlist. We have to let the core handle this because
+ *   set_initial_image() must be called before loading content,
+ *   i.e. the frontend cannot access image paths in advance
+ *   and thus cannot perform the error check itself.
+ *   If set path and content path do not match, the core should
+ *   ignore the set 'index' value and instead use 0
+ * Returns 'false' if index or 'path' are invalid, or core
+ * does not support this functionality
+ */
+typedef bool (RETRO_CALLCONV *retro_set_initial_image_t)(unsigned index, const char *path);
+
+/* Fetches the path of the specified disk image file.
+ * Returns 'false' if index is invalid (index >= get_num_images())
+ * or path is otherwise unavailable.
+ */
+typedef bool (RETRO_CALLCONV *retro_get_image_path_t)(unsigned index, char *path, size_t len);
+
+/* Fetches a core-provided 'label' for the specified disk
+ * image file. In the simplest case this may be a file name
+ * (without extension), but for cores with more complex
+ * content requirements information may be provided to
+ * facilitate user disk swapping - for example, a core
+ * running floppy-disk-based content may uniquely label
+ * save disks, data disks, level disks, etc. with names
+ * corresponding to in-game disk change prompts (so the
+ * frontend can provide better user guidance than a 'dumb'
+ * disk index value).
+ * Returns 'false' if index is invalid (index >= get_num_images())
+ * or label is otherwise unavailable.
+ */
+typedef bool (RETRO_CALLCONV *retro_get_image_label_t)(unsigned index, char *label, size_t len);
+
+struct retro_disk_control_callback
+{
+   retro_set_eject_state_t set_eject_state;
+   retro_get_eject_state_t get_eject_state;
+
+   retro_get_image_index_t get_image_index;
+   retro_set_image_index_t set_image_index;
+   retro_get_num_images_t  get_num_images;
+
+   retro_replace_image_index_t replace_image_index;
+   retro_add_image_index_t add_image_index;
+};
+
+struct retro_disk_control_ext_callback
+{
+   retro_set_eject_state_t set_eject_state;
+   retro_get_eject_state_t get_eject_state;
+
+   retro_get_image_index_t get_image_index;
+   retro_set_image_index_t set_image_index;
+   retro_get_num_images_t  get_num_images;
+
+   retro_replace_image_index_t replace_image_index;
+   retro_add_image_index_t add_image_index;
+
+   /* NOTE: Frontend will only attempt to record/restore
+    * last used disk index if both set_initial_image()
+    * and get_image_path() are implemented */
+   retro_set_initial_image_t set_initial_image; /* Optional - may be NULL */
+
+   retro_get_image_path_t get_image_path;       /* Optional - may be NULL */
+   retro_get_image_label_t get_image_label;     /* Optional - may be NULL */
+};
+
+enum retro_pixel_format
+{
+   /* 0RGB1555, native endian.
+    * 0 bit must be set to 0.
+    * This pixel format is default for compatibility concerns only.
+    * If a 15/16-bit pixel format is desired, consider using RGB565. */
+   RETRO_PIXEL_FORMAT_0RGB1555 = 0,
+
+   /* XRGB8888, native endian.
+    * X bits are ignored. */
+   RETRO_PIXEL_FORMAT_XRGB8888 = 1,
+
+   /* RGB565, native endian.
+    * This pixel format is the recommended format to use if a 15/16-bit
+    * format is desired as it is the pixel format that is typically
+    * available on a wide range of low-power devices.
+    *
+    * It is also natively supported in APIs like OpenGL ES. */
+   RETRO_PIXEL_FORMAT_RGB565   = 2,
+
+   /* Ensure sizeof() == sizeof(int). */
+   RETRO_PIXEL_FORMAT_UNKNOWN  = INT_MAX
+};
+
+struct retro_message
+{
+   const char *msg;        /* Message to be displayed. */
+   unsigned    frames;     /* Duration in frames of message. */
+};
+
+enum retro_message_target
+{
+   RETRO_MESSAGE_TARGET_ALL = 0,
+   RETRO_MESSAGE_TARGET_OSD,
+   RETRO_MESSAGE_TARGET_LOG
+};
+
+enum retro_message_type
+{
+   RETRO_MESSAGE_TYPE_NOTIFICATION = 0,
+   RETRO_MESSAGE_TYPE_NOTIFICATION_ALT,
+   RETRO_MESSAGE_TYPE_STATUS,
+   RETRO_MESSAGE_TYPE_PROGRESS
+};
+
+struct retro_message_ext
+{
+   /* Message string to be displayed/logged */
+   const char *msg;
+   /* Duration (in ms) of message when targeting the OSD */
+   unsigned duration;
+   /* Message priority when targeting the OSD
+    * > When multiple concurrent messages are sent to
+    *   the frontend and the frontend does not have the
+    *   capacity to display them all, messages with the
+    *   *highest* priority value should be shown
+    * > There is no upper limit to a message priority
+    *   value (within the bounds of the unsigned data type)
+    * > In the reference frontend (RetroArch), the same
+    *   priority values are used for frontend-generated
+    *   notifications, which are typically assigned values
+    *   between 0 and 3 depending upon importance */
+   unsigned priority;
+   /* Message logging level (info, warn, error, etc.) */
+   enum retro_log_level level;
+   /* Message destination: OSD, logging interface or both */
+   enum retro_message_target target;
+   /* Message 'type' when targeting the OSD
+    * > RETRO_MESSAGE_TYPE_NOTIFICATION: Specifies that a
+    *   message should be handled in identical fashion to
+    *   a standard frontend-generated notification
+    * > RETRO_MESSAGE_TYPE_NOTIFICATION_ALT: Specifies that
+    *   message is a notification that requires user attention
+    *   or action, but that it should be displayed in a manner
+    *   that differs from standard frontend-generated notifications.
+    *   This would typically correspond to messages that should be
+    *   displayed immediately (independently from any internal
+    *   frontend message queue), and/or which should be visually
+    *   distinguishable from frontend-generated notifications.
+    *   For example, a core may wish to inform the user of
+    *   information related to a disk-change event. It is
+    *   expected that the frontend itself may provide a
+    *   notification in this case; if the core sends a
+    *   message of type RETRO_MESSAGE_TYPE_NOTIFICATION, an
+    *   uncomfortable 'double-notification' may occur. A message
+    *   of RETRO_MESSAGE_TYPE_NOTIFICATION_ALT should therefore
+    *   be presented such that visual conflict with regular
+    *   notifications does not occur
+    * > RETRO_MESSAGE_TYPE_STATUS: Indicates that message
+    *   is not a standard notification. This typically
+    *   corresponds to 'status' indicators, such as a core's
+    *   internal FPS, which are intended to be displayed
+    *   either permanently while a core is running, or in
+    *   a manner that does not suggest user attention or action
+    *   is required. 'Status' type messages should therefore be
+    *   displayed in a different on-screen location and in a manner
+    *   easily distinguishable from both standard frontend-generated
+    *   notifications and messages of type RETRO_MESSAGE_TYPE_NOTIFICATION_ALT
+    * > RETRO_MESSAGE_TYPE_PROGRESS: Indicates that message reports
+    *   the progress of an internal core task. For example, in cases
+    *   where a core itself handles the loading of content from a file,
+    *   this may correspond to the percentage of the file that has been
+    *   read. Alternatively, an audio/video playback core may use a
+    *   message of type RETRO_MESSAGE_TYPE_PROGRESS to display the current
+    *   playback position as a percentage of the runtime. 'Progress' type
+    *   messages should therefore be displayed as a literal progress bar,
+    *   where:
+    *   - 'retro_message_ext.msg' is the progress bar title/label
+    *   - 'retro_message_ext.progress' determines the length of
+    *     the progress bar
+    * NOTE: Message type is a *hint*, and may be ignored
+    * by the frontend. If a frontend lacks support for
+    * displaying messages via alternate means than standard
+    * frontend-generated notifications, it will treat *all*
+    * messages as having the type RETRO_MESSAGE_TYPE_NOTIFICATION */
+   enum retro_message_type type;
+   /* Task progress when targeting the OSD and message is
+    * of type RETRO_MESSAGE_TYPE_PROGRESS
+    * > -1:    Unmetered/indeterminate
+    * > 0-100: Current progress percentage
+    * NOTE: Since message type is a hint, a frontend may ignore
+    * progress values. Where relevant, a core should therefore
+    * include progress percentage within the message string,
+    * such that the message intent remains clear when displayed
+    * as a standard frontend-generated notification */
+   int8_t progress;
+};
+
+/* Describes how the libretro implementation maps a libretro input bind
+ * to its internal input system through a human readable string.
+ * This string can be used to better let a user configure input. */
+struct retro_input_descriptor
+{
+   /* Associates given parameters with a description. */
+   unsigned port;
+   unsigned device;
+   unsigned index;
+   unsigned id;
+
+   /* Human readable description for parameters.
+    * The pointer must remain valid until
+    * retro_unload_game() is called. */
+   const char *description;
+};
+
+struct retro_system_info
+{
+   /* All pointers are owned by libretro implementation, and pointers must
+    * remain valid until it is unloaded. */
+
+   const char *library_name;      /* Descriptive name of library. Should not
+                                   * contain any version numbers, etc. */
+   const char *library_version;   /* Descriptive version of core. */
+
+   const char *valid_extensions;  /* A string listing probably content
+                                   * extensions the core will be able to
+                                   * load, separated with pipe.
+                                   * I.e. "bin|rom|iso".
+                                   * Typically used for a GUI to filter
+                                   * out extensions. */
+
+   /* Libretro cores that need to have direct access to their content
+    * files, including cores which use the path of the content files to
+    * determine the paths of other files, should set need_fullpath to true.
+    *
+    * Cores should strive for setting need_fullpath to false,
+    * as it allows the frontend to perform patching, etc.
+    *
+    * If need_fullpath is true and retro_load_game() is called:
+    *    - retro_game_info::path is guaranteed to have a valid path
+    *    - retro_game_info::data and retro_game_info::size are invalid
+    *
+    * If need_fullpath is false and retro_load_game() is called:
+    *    - retro_game_info::path may be NULL
+    *    - retro_game_info::data and retro_game_info::size are guaranteed
+    *      to be valid
+    *
+    * See also:
+    *    - RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY
+    *    - RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY
+    */
+   bool        need_fullpath;
+
+   /* If true, the frontend is not allowed to extract any archives before
+    * loading the real content.
+    * Necessary for certain libretro implementations that load games
+    * from zipped archives. */
+   bool        block_extract;
+};
+
+struct retro_game_geometry
+{
+   unsigned base_width;    /* Nominal video width of game. */
+   unsigned base_height;   /* Nominal video height of game. */
+   unsigned max_width;     /* Maximum possible width of game. */
+   unsigned max_height;    /* Maximum possible height of game. */
+
+   float    aspect_ratio;  /* Nominal aspect ratio of game. If
+                            * aspect_ratio is <= 0.0, an aspect ratio
+                            * of base_width / base_height is assumed.
+                            * A frontend could override this setting,
+                            * if desired. */
+};
+
+struct retro_system_timing
+{
+   double fps;             /* FPS of video content. */
+   double sample_rate;     /* Sampling rate of audio. */
+};
+
+struct retro_system_av_info
+{
+   struct retro_game_geometry geometry;
+   struct retro_system_timing timing;
+};
+
+struct retro_variable
+{
+   /* Variable to query in RETRO_ENVIRONMENT_GET_VARIABLE.
+    * If NULL, obtains the complete environment string if more
+    * complex parsing is necessary.
+    * The environment string is formatted as key-value pairs
+    * delimited by semicolons as so:
+    * "key1=value1;key2=value2;..."
+    */
+   const char *key;
+
+   /* Value to be obtained. If key does not exist, it is set to NULL. */
+   const char *value;
+};
+
+struct retro_core_option_display
+{
+   /* Variable to configure in RETRO_ENVIRONMENT_SET_CORE_OPTIONS_DISPLAY */
+   const char *key;
+
+   /* Specifies whether variable should be displayed
+    * when presenting core options to the user */
+   bool visible;
+};
+
+/* Maximum number of values permitted for a core option
+ * > Note: We have to set a maximum value due the limitations
+ *   of the C language - i.e. it is not possible to create an
+ *   array of structs each containing a variable sized array,
+ *   so the retro_core_option_definition values array must
+ *   have a fixed size. The size limit of 128 is a balancing
+ *   act - it needs to be large enough to support all 'sane'
+ *   core options, but setting it too large may impact low memory
+ *   platforms. In practise, if a core option has more than
+ *   128 values then the implementation is likely flawed.
+ *   To quote the above API reference:
+ *      "The number of possible options should be very limited
+ *       i.e. it should be feasible to cycle through options
+ *       without a keyboard."
+ */
+#define RETRO_NUM_CORE_OPTION_VALUES_MAX 128
+
+struct retro_core_option_value
+{
+   /* Expected option value */
+   const char *value;
+
+   /* Human-readable value label. If NULL, value itself
+    * will be displayed by the frontend */
+   const char *label;
+};
+
+struct retro_core_option_definition
+{
+   /* Variable to query in RETRO_ENVIRONMENT_GET_VARIABLE. */
+   const char *key;
+
+   /* Human-readable core option description (used as menu label) */
+   const char *desc;
+
+   /* Human-readable core option information (used as menu sublabel) */
+   const char *info;
+
+   /* Array of retro_core_option_value structs, terminated by NULL */
+   struct retro_core_option_value values[RETRO_NUM_CORE_OPTION_VALUES_MAX];
+
+   /* Default core option value. Must match one of the values
+    * in the retro_core_option_value array, otherwise will be
+    * ignored */
+   const char *default_value;
+};
+
+struct retro_core_options_intl
+{
+   /* Pointer to an array of retro_core_option_definition structs
+    * - US English implementation
+    * - Must point to a valid array */
+   struct retro_core_option_definition *us;
+
+   /* Pointer to an array of retro_core_option_definition structs
+    * - Implementation for current frontend language
+    * - May be NULL */
+   struct retro_core_option_definition *local;
+};
+
+struct retro_game_info
+{
+   const char *path;       /* Path to game, UTF-8 encoded.
+                            * Sometimes used as a reference for building other paths.
+                            * May be NULL if game was loaded from stdin or similar,
+                            * but in this case some cores will be unable to load `data`.
+                            * So, it is preferable to fabricate something here instead
+                            * of passing NULL, which will help more cores to succeed.
+                            * retro_system_info::need_fullpath requires
+                            * that this path is valid. */
+   const void *data;       /* Memory buffer of loaded game. Will be NULL
+                            * if need_fullpath was set. */
+   size_t      size;       /* Size of memory buffer. */
+   const char *meta;       /* String of implementation specific meta-data. */
+};
+
+#define RETRO_MEMORY_ACCESS_WRITE (1 << 0)
+   /* The core will write to the buffer provided by retro_framebuffer::data. */
+#define RETRO_MEMORY_ACCESS_READ (1 << 1)
+   /* The core will read from retro_framebuffer::data. */
+#define RETRO_MEMORY_TYPE_CACHED (1 << 0)
+   /* The memory in data is cached.
+    * If not cached, random writes and/or reading from the buffer is expected to be very slow. */
+struct retro_framebuffer
+{
+   void *data;                      /* The framebuffer which the core can render into.
+                                       Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER.
+                                       The initial contents of data are unspecified. */
+   unsigned width;                  /* The framebuffer width used by the core. Set by core. */
+   unsigned height;                 /* The framebuffer height used by the core. Set by core. */
+   size_t pitch;                    /* The number of bytes between the beginning of a scanline,
+                                       and beginning of the next scanline.
+                                       Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER. */
+   enum retro_pixel_format format;  /* The pixel format the core must use to render into data.
+                                       This format could differ from the format used in
+                                       SET_PIXEL_FORMAT.
+                                       Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER. */
+
+   unsigned access_flags;           /* How the core will access the memory in the framebuffer.
+                                       RETRO_MEMORY_ACCESS_* flags.
+                                       Set by core. */
+   unsigned memory_flags;           /* Flags telling core how the memory has been mapped.
+                                       RETRO_MEMORY_TYPE_* flags.
+                                       Set by frontend in GET_CURRENT_SOFTWARE_FRAMEBUFFER. */
+};
+
+/* Callbacks */
+
+/* Environment callback. Gives implementations a way of performing
+ * uncommon tasks. Extensible. */
+typedef bool (RETRO_CALLCONV *retro_environment_t)(unsigned cmd, void *data);
+
+/* Render a frame. Pixel format is 15-bit 0RGB1555 native endian
+ * unless changed (see RETRO_ENVIRONMENT_SET_PIXEL_FORMAT).
+ *
+ * Width and height specify dimensions of buffer.
+ * Pitch specifices length in bytes between two lines in buffer.
+ *
+ * For performance reasons, it is highly recommended to have a frame
+ * that is packed in memory, i.e. pitch == width * byte_per_pixel.
+ * Certain graphic APIs, such as OpenGL ES, do not like textures
+ * that are not packed in memory.
+ */
+typedef void (RETRO_CALLCONV *retro_video_refresh_t)(const void *data, unsigned width,
+      unsigned height, size_t pitch);
+
+/* Renders a single audio frame. Should only be used if implementation
+ * generates a single sample at a time.
+ * Format is signed 16-bit native endian.
+ */
+typedef void (RETRO_CALLCONV *retro_audio_sample_t)(int16_t left, int16_t right);
+
+/* Renders multiple audio frames in one go.
+ *
+ * One frame is defined as a sample of left and right channels, interleaved.
+ * I.e. int16_t buf[4] = { l, r, l, r }; would be 2 frames.
+ * Only one of the audio callbacks must ever be used.
+ */
+typedef size_t (RETRO_CALLCONV *retro_audio_sample_batch_t)(const int16_t *data,
+      size_t frames);
+
+/* Polls input. */
+typedef void (RETRO_CALLCONV *retro_input_poll_t)(void);
+
+/* Queries for input for player 'port'. device will be masked with
+ * RETRO_DEVICE_MASK.
+ *
+ * Specialization of devices such as RETRO_DEVICE_JOYPAD_MULTITAP that
+ * have been set with retro_set_controller_port_device()
+ * will still use the higher level RETRO_DEVICE_JOYPAD to request input.
+ */
+typedef int16_t (RETRO_CALLCONV *retro_input_state_t)(unsigned port, unsigned device,
+      unsigned index, unsigned id);
+
+/* Sets callbacks. retro_set_environment() is guaranteed to be called
+ * before retro_init().
+ *
+ * The rest of the set_* functions are guaranteed to have been called
+ * before the first call to retro_run() is made. */
+RETRO_API void retro_set_environment(retro_environment_t);
+RETRO_API void retro_set_video_refresh(retro_video_refresh_t);
+RETRO_API void retro_set_audio_sample(retro_audio_sample_t);
+RETRO_API void retro_set_audio_sample_batch(retro_audio_sample_batch_t);
+RETRO_API void retro_set_input_poll(retro_input_poll_t);
+RETRO_API void retro_set_input_state(retro_input_state_t);
+
+/* Library global initialization/deinitialization. */
+RETRO_API void retro_init(void);
+RETRO_API void retro_deinit(void);
+
+/* Must return RETRO_API_VERSION. Used to validate ABI compatibility
+ * when the API is revised. */
+RETRO_API unsigned retro_api_version(void);
+
+/* Gets statically known system info. Pointers provided in *info
+ * must be statically allocated.
+ * Can be called at any time, even before retro_init(). */
+RETRO_API void retro_get_system_info(struct retro_system_info *info);
+
+/* Gets information about system audio/video timings and geometry.
+ * Can be called only after retro_load_game() has successfully completed.
+ * NOTE: The implementation of this function might not initialize every
+ * variable if needed.
+ * E.g. geom.aspect_ratio might not be initialized if core doesn't
+ * desire a particular aspect ratio. */
+RETRO_API void retro_get_system_av_info(struct retro_system_av_info *info);
+
+/* Sets device to be used for player 'port'.
+ * By default, RETRO_DEVICE_JOYPAD is assumed to be plugged into all
+ * available ports.
+ * Setting a particular device type is not a guarantee that libretro cores
+ * will only poll input based on that particular device type. It is only a
+ * hint to the libretro core when a core cannot automatically detect the
+ * appropriate input device type on its own. It is also relevant when a
+ * core can change its behavior depending on device type.
+ *
+ * As part of the core's implementation of retro_set_controller_port_device,
+ * the core should call RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS to notify the
+ * frontend if the descriptions for any controls have changed as a
+ * result of changing the device type.
+ */
+RETRO_API void retro_set_controller_port_device(unsigned port, unsigned device);
+
+/* Resets the current game. */
+RETRO_API void retro_reset(void);
+
+/* Runs the game for one video frame.
+ * During retro_run(), input_poll callback must be called at least once.
+ *
+ * If a frame is not rendered for reasons where a game "dropped" a frame,
+ * this still counts as a frame, and retro_run() should explicitly dupe
+ * a frame if GET_CAN_DUPE returns true.
+ * In this case, the video callback can take a NULL argument for data.
+ */
+RETRO_API void retro_run(void);
+
+/* Returns the amount of data the implementation requires to serialize
+ * internal state (save states).
+ * Between calls to retro_load_game() and retro_unload_game(), the
+ * returned size is never allowed to be larger than a previous returned
+ * value, to ensure that the frontend can allocate a save state buffer once.
+ */
+RETRO_API size_t retro_serialize_size(void);
+
+/* Serializes internal state. If failed, or size is lower than
+ * retro_serialize_size(), it should return false, true otherwise. */
+RETRO_API bool retro_serialize(void *data, size_t size);
+RETRO_API bool retro_unserialize(const void *data, size_t size);
+
+RETRO_API void retro_cheat_reset(void);
+RETRO_API void retro_cheat_set(unsigned index, bool enabled, const char *code);
+
+/* Loads a game.
+ * Return true to indicate successful loading and false to indicate load failure.
+ */
+RETRO_API bool retro_load_game(const struct retro_game_info *game);
+
+/* Loads a "special" kind of game. Should not be used,
+ * except in extreme cases. */
+RETRO_API bool retro_load_game_special(
+  unsigned game_type,
+  const struct retro_game_info *info, size_t num_info
+);
+
+/* Unloads the currently loaded game. Called before retro_deinit(void). */
+RETRO_API void retro_unload_game(void);
+
+/* Gets region of game. */
+RETRO_API unsigned retro_get_region(void);
+
+/* Gets region of memory. */
+RETRO_API void *retro_get_memory_data(unsigned id);
+RETRO_API size_t retro_get_memory_size(unsigned id);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

+ 66 - 0
platform/libretro/libretro-common/include/libretro_gskit_ps2.h

@@ -0,0 +1,66 @@
+/* Copyright (C) 2010-2020 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------------
+ * The following license statement only applies to this libretro API header (libretro_d3d.h)
+ * ---------------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the
+ * "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or
+ * substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef LIBRETRO_GSKIT_PS2_H_
+#define LIBRETRO_GSKIT_PS2_H_
+
+#include "libretro.h"
+
+#if defined(PS2)
+
+#include <gsKit.h>
+
+#define RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION 2
+
+struct retro_hw_ps2_insets
+{
+  float top;
+  float left;
+  float bottom;
+  float right;
+};
+
+#define empty_ps2_insets (struct retro_hw_ps2_insets){0.f, 0.f, 0.f, 0.f}
+
+struct retro_hw_render_interface_gskit_ps2
+{
+  /* Must be set to RETRO_HW_RENDER_INTERFACE_GSKIT_PS2. */
+  enum retro_hw_render_interface_type interface_type;
+  /* Must be set to RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION. */
+  unsigned interface_version;
+
+  /* Opaque handle to the GSKit_PS2 backend in the frontend
+   * which must be passed along to all function pointers
+   * in this interface.
+   */
+   GSTEXTURE *coreTexture;
+   struct retro_hw_ps2_insets padding;
+};
+typedef struct retro_hw_render_interface_gskit_ps2 RETRO_HW_RENDER_INTEFACE_GSKIT_PS2;
+
+#endif
+
+#endif /* LIBRETRO_GSKIT_PS2_H_ */

+ 52 - 0
platform/libretro/libretro-common/include/memmap.h

@@ -0,0 +1,52 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (memmap.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _LIBRETRO_MEMMAP_H
+#define _LIBRETRO_MEMMAP_H
+
+#include <stdio.h>
+#include <stdint.h>
+
+#if defined(__CELLOS_LV2__) || defined(PSP) || defined(PS2) || defined(GEKKO) || defined(VITA) || defined(_XBOX) || defined(_3DS) || defined(WIIU) || defined(SWITCH) || defined(HAVE_LIBNX)
+/* No mman available */
+#elif defined(_WIN32) && !defined(_XBOX)
+#include <windows.h>
+#include <errno.h>
+#include <io.h>
+#else
+#define HAVE_MMAN
+#include <sys/mman.h>
+#endif
+
+#if !defined(HAVE_MMAN) || defined(_WIN32)
+void* mmap(void *addr, size_t len, int mmap_prot, int mmap_flags, int fildes, size_t off);
+
+int munmap(void *addr, size_t len);
+
+int mprotect(void *addr, size_t len, int prot);
+#endif
+
+int memsync(void *start, void *end);
+
+int memprotect(void *addr, size_t len);
+
+#endif

+ 36 - 0
platform/libretro/libretro-common/include/retro_common.h

@@ -0,0 +1,36 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_common.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _LIBRETRO_COMMON_RETRO_COMMON_H
+#define _LIBRETRO_COMMON_RETRO_COMMON_H
+
+/*
+This file is designed to normalize the libretro-common compiling environment.
+It is not to be used in public API headers, as they should be designed as leanly as possible.
+Nonetheless.. in the meantime, if you do something like use ssize_t, which is not fully portable,
+in a public API, you may need this.
+*/
+
+/* conditional compilation is handled inside here */
+#include <compat/msvc.h>
+
+#endif

+ 119 - 0
platform/libretro/libretro-common/include/retro_common_api.h

@@ -0,0 +1,119 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_common_api.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef _LIBRETRO_COMMON_RETRO_COMMON_API_H
+#define _LIBRETRO_COMMON_RETRO_COMMON_API_H
+
+/*
+This file is designed to normalize the libretro-common compiling environment
+for public API headers. This should be leaner than a normal compiling environment,
+since it gets #included into other project's sources.
+*/
+
+/* ------------------------------------ */
+
+/*
+Ordinarily we want to put #ifdef __cplusplus extern "C" in C library
+headers to enable them to get used by c++ sources.
+However, we want to support building this library as C++ as well, so a
+special technique is called for.
+*/
+
+#define RETRO_BEGIN_DECLS
+#define RETRO_END_DECLS
+
+#ifdef __cplusplus
+
+#ifdef CXX_BUILD
+/* build wants everything to be built as c++, so no extern "C" */
+#else
+#undef RETRO_BEGIN_DECLS
+#undef RETRO_END_DECLS
+#define RETRO_BEGIN_DECLS extern "C" {
+#define RETRO_END_DECLS }
+#endif
+
+#else
+
+/* header is included by a C source file, so no extern "C" */
+
+#endif
+
+/*
+IMO, this non-standard ssize_t should not be used.
+However, it's a good example of how to handle something like this.
+*/
+#ifdef _MSC_VER
+#ifndef HAVE_SSIZE_T
+#define HAVE_SSIZE_T
+#if defined(_WIN64)
+typedef __int64 ssize_t;
+#elif defined(_WIN32)
+typedef int ssize_t;
+#endif
+#endif
+#elif defined(__MACH__)
+#include <sys/types.h>
+#endif
+
+#ifdef _MSC_VER
+#if _MSC_VER >= 1800
+#include <inttypes.h>
+#else
+#ifndef PRId64
+#define PRId64 "I64d"
+#define PRIu64 "I64u"
+#define PRIuPTR "Iu"
+#endif
+#endif
+#else
+/* C++11 says this one isn't needed, but apparently (some versions of) mingw require it anyways */
+/* https://stackoverflow.com/questions/8132399/how-to-printf-uint64-t-fails-with-spurious-trailing-in-format */
+/* https://github.com/libretro/RetroArch/issues/6009 */
+#ifndef __STDC_FORMAT_MACROS
+#define __STDC_FORMAT_MACROS 1
+#endif
+#include <inttypes.h>
+#endif
+#ifndef PRId64
+#error "inttypes.h is being screwy"
+#endif
+#define STRING_REP_INT64 "%" PRId64
+#define STRING_REP_UINT64 "%" PRIu64
+#define STRING_REP_USIZE "%" PRIuPTR
+
+/*
+I would like to see retro_inline.h moved in here; possibly boolean too.
+
+rationale: these are used in public APIs, and it is easier to find problems
+and write code that works the first time portably when theyre included uniformly
+than to do the analysis from scratch each time you think you need it, for each feature.
+
+Moreover it helps force you to make hard decisions: if you EVER bring in boolean.h,
+then you should pay the price everywhere, so you can see how much grief it will cause.
+
+Of course, another school of thought is that you should do as little damage as possible
+in as few places as possible...
+*/
+
+/* _LIBRETRO_COMMON_RETRO_COMMON_API_H */
+#endif

+ 78 - 0
platform/libretro/libretro-common/include/retro_dirent.h

@@ -0,0 +1,78 @@
+/* Copyright  (C) 2010-2019 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_dirent.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __RETRO_DIRENT_H
+#define __RETRO_DIRENT_H
+
+#include <libretro.h>
+#include <retro_common_api.h>
+#include <retro_miscellaneous.h>
+
+#include <boolean.h>
+
+RETRO_BEGIN_DECLS
+
+#define DIRENT_REQUIRED_VFS_VERSION 3
+
+void dirent_vfs_init(const struct retro_vfs_interface_info* vfs_info);
+
+typedef struct RDIR RDIR;
+
+/**
+ *
+ * retro_opendir:
+ * @name         : path to the directory to open.
+ *
+ * Opens a directory for reading. Tidy up with retro_closedir.
+ *
+ * Returns: RDIR pointer on success, NULL if name is not a
+ * valid directory, null itself or the empty string.
+ */
+struct RDIR *retro_opendir(const char *name);
+
+struct RDIR *retro_opendir_include_hidden(const char *name, bool include_hidden);
+
+int retro_readdir(struct RDIR *rdir);
+
+/* Deprecated, returns false, left for compatibility */
+bool retro_dirent_error(struct RDIR *rdir);
+
+const char *retro_dirent_get_name(struct RDIR *rdir);
+
+/**
+ *
+ * retro_dirent_is_dir:
+ * @rdir         : pointer to the directory entry.
+ * @unused       : deprecated, included for compatibility reasons, pass NULL
+ *
+ * Is the directory listing entry a directory?
+ *
+ * Returns: true if directory listing entry is
+ * a directory, false if not.
+ */
+bool retro_dirent_is_dir(struct RDIR *rdir, const char *unused);
+
+void retro_closedir(struct RDIR *rdir);
+
+RETRO_END_DECLS
+
+#endif

+ 258 - 0
platform/libretro/libretro-common/include/retro_endianness.h

@@ -0,0 +1,258 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_endianness.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_ENDIANNESS_H
+#define __LIBRETRO_SDK_ENDIANNESS_H
+
+#include <retro_inline.h>
+#include <stdint.h>
+#include <stdlib.h>
+
+#if defined(_MSC_VER) && _MSC_VER > 1200
+#define SWAP16 _byteswap_ushort
+#define SWAP32 _byteswap_ulong
+#else
+#define SWAP16(x) ((uint16_t)(                  \
+         (((uint16_t)(x) & 0x00ff) << 8)      | \
+         (((uint16_t)(x) & 0xff00) >> 8)        \
+          ))
+#define SWAP32(x) ((uint32_t)(           \
+         (((uint32_t)(x) & 0x000000ff) << 24) | \
+         (((uint32_t)(x) & 0x0000ff00) <<  8) | \
+         (((uint32_t)(x) & 0x00ff0000) >>  8) | \
+         (((uint32_t)(x) & 0xff000000) >> 24)   \
+         ))
+#endif
+
+#if defined(_MSC_VER) && _MSC_VER <= 1200
+#define SWAP64(val)                                             \
+	((((uint64_t)(val) & 0x00000000000000ff) << 56)      \
+	 | (((uint64_t)(val) & 0x000000000000ff00) << 40)    \
+	 | (((uint64_t)(val) & 0x0000000000ff0000) << 24)    \
+	 | (((uint64_t)(val) & 0x00000000ff000000) << 8)     \
+	 | (((uint64_t)(val) & 0x000000ff00000000) >> 8)     \
+	 | (((uint64_t)(val) & 0x0000ff0000000000) >> 24)    \
+	 | (((uint64_t)(val) & 0x00ff000000000000) >> 40)    \
+	 | (((uint64_t)(val) & 0xff00000000000000) >> 56))
+#else
+#define SWAP64(val)                                             \
+	((((uint64_t)(val) & 0x00000000000000ffULL) << 56)      \
+	 | (((uint64_t)(val) & 0x000000000000ff00ULL) << 40)    \
+	 | (((uint64_t)(val) & 0x0000000000ff0000ULL) << 24)    \
+	 | (((uint64_t)(val) & 0x00000000ff000000ULL) << 8)     \
+	 | (((uint64_t)(val) & 0x000000ff00000000ULL) >> 8)     \
+	 | (((uint64_t)(val) & 0x0000ff0000000000ULL) >> 24)    \
+	 | (((uint64_t)(val) & 0x00ff000000000000ULL) >> 40)    \
+	 | (((uint64_t)(val) & 0xff00000000000000ULL) >> 56))
+#endif
+
+/**
+ * is_little_endian:
+ *
+ * Checks if the system is little endian or big-endian.
+ *
+ * Returns: greater than 0 if little-endian,
+ * otherwise big-endian.
+ **/
+#if defined(MSB_FIRST)
+#define is_little_endian() (0)
+#elif defined(__x86_64) || defined(__i386) || defined(_M_IX86) || defined(_M_X64)
+#define is_little_endian() (1)
+#else
+static INLINE uint8_t is_little_endian(void)
+{
+   union
+   {
+      uint16_t x;
+      uint8_t y[2];
+   } u;
+
+   u.x = 1;
+   return u.y[0];
+}
+#endif
+
+/**
+ * swap_if_big64:
+ * @val        : unsigned 64-bit value
+ *
+ * Byteswap unsigned 64-bit value if system is big-endian.
+ *
+ * Returns: Byteswapped value in case system is big-endian,
+ * otherwise returns same value.
+ **/
+
+#if defined(MSB_FIRST)
+#define swap_if_big64(val) (SWAP64(val))
+#elif defined(__x86_64) || defined(__i386) || defined(_M_IX86) || defined(_M_X64)
+#define swap_if_big64(val) (val)
+#else
+static INLINE uint64_t swap_if_big64(uint64_t val)
+{
+   if (is_little_endian())
+      return val;
+   return SWAP64(val);
+}
+#endif
+
+/**
+ * swap_if_big32:
+ * @val        : unsigned 32-bit value
+ *
+ * Byteswap unsigned 32-bit value if system is big-endian.
+ *
+ * Returns: Byteswapped value in case system is big-endian,
+ * otherwise returns same value.
+ **/
+
+#if defined(MSB_FIRST)
+#define swap_if_big32(val) (SWAP32(val))
+#elif defined(__x86_64) || defined(__i386) || defined(_M_IX86) || defined(_M_X64)
+#define swap_if_big32(val) (val)
+#else
+static INLINE uint32_t swap_if_big32(uint32_t val)
+{
+   if (is_little_endian())
+      return val;
+   return SWAP32(val);
+}
+#endif
+
+/**
+ * swap_if_little64:
+ * @val        : unsigned 64-bit value
+ *
+ * Byteswap unsigned 64-bit value if system is little-endian.
+ *
+ * Returns: Byteswapped value in case system is little-endian,
+ * otherwise returns same value.
+ **/
+
+#if defined(MSB_FIRST)
+#define swap_if_little64(val) (val)
+#elif defined(__x86_64) || defined(__i386) || defined(_M_IX86) || defined(_M_X64)
+#define swap_if_little64(val) (SWAP64(val))
+#else
+static INLINE uint64_t swap_if_little64(uint64_t val)
+{
+   if (is_little_endian())
+      return SWAP64(val);
+   return val;
+}
+#endif
+
+/**
+ * swap_if_little32:
+ * @val        : unsigned 32-bit value
+ *
+ * Byteswap unsigned 32-bit value if system is little-endian.
+ *
+ * Returns: Byteswapped value in case system is little-endian,
+ * otherwise returns same value.
+ **/
+
+#if defined(MSB_FIRST)
+#define swap_if_little32(val) (val)
+#elif defined(__x86_64) || defined(__i386) || defined(_M_IX86) || defined(_M_X64)
+#define swap_if_little32(val) (SWAP32(val))
+#else
+static INLINE uint32_t swap_if_little32(uint32_t val)
+{
+   if (is_little_endian())
+      return SWAP32(val);
+   return val;
+}
+#endif
+
+/**
+ * swap_if_big16:
+ * @val        : unsigned 16-bit value
+ *
+ * Byteswap unsigned 16-bit value if system is big-endian.
+ *
+ * Returns: Byteswapped value in case system is big-endian,
+ * otherwise returns same value.
+ **/
+
+#if defined(MSB_FIRST)
+#define swap_if_big16(val) (SWAP16(val))
+#elif defined(__x86_64) || defined(__i386) || defined(_M_IX86) || defined(_M_X64)
+#define swap_if_big16(val) (val)
+#else
+static INLINE uint16_t swap_if_big16(uint16_t val)
+{
+   if (is_little_endian())
+      return val;
+   return SWAP16(val);
+}
+#endif
+
+/**
+ * swap_if_little16:
+ * @val        : unsigned 16-bit value
+ *
+ * Byteswap unsigned 16-bit value if system is little-endian.
+ *
+ * Returns: Byteswapped value in case system is little-endian,
+ * otherwise returns same value.
+ **/
+
+#if defined(MSB_FIRST)
+#define swap_if_little16(val) (val)
+#elif defined(__x86_64) || defined(__i386) || defined(_M_IX86) || defined(_M_X64)
+#define swap_if_little16(val) (SWAP16(val))
+#else
+static INLINE uint16_t swap_if_little16(uint16_t val)
+{
+   if (is_little_endian())
+      return SWAP16(val);
+   return val;
+}
+#endif
+
+/**
+ * store32be:
+ * @addr        : pointer to unsigned 32-bit buffer
+ * @data        : unsigned 32-bit value to write
+ *
+ * Write data to address. Endian-safe. Byteswaps the data
+ * first if necessary before storing it.
+ **/
+static INLINE void store32be(uint32_t *addr, uint32_t data)
+{
+   *addr = swap_if_little32(data);
+}
+
+/**
+ * load32be:
+ * @addr        : pointer to unsigned 32-bit buffer
+ *
+ * Load value from address. Endian-safe.
+ *
+ * Returns: value from address, byte-swapped if necessary.
+ **/
+static INLINE uint32_t load32be(const uint32_t *addr)
+{
+   return swap_if_little32(*addr);
+}
+
+#endif

+ 114 - 0
platform/libretro/libretro-common/include/retro_environment.h

@@ -0,0 +1,114 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_environment.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_ENVIRONMENT_H
+#define __LIBRETRO_SDK_ENVIRONMENT_H
+
+/*
+This file is designed to create a normalized environment for compiling
+libretro-common's private implementations, or any other sources which might
+enjoy use of it's environment (RetroArch for instance).
+This should be an elaborately crafted environment so that sources don't
+need to be full of platform-specific workarounds.
+*/
+
+#if defined (__cplusplus)
+#if 0
+printf("This is C++, version %d.\n", __cplusplus);
+#endif
+/* The expected values would be
+ *   199711L, for ISO/IEC 14882:1998 or 14882:2003
+ */
+
+#elif defined(__STDC__)
+/* This is standard C. */
+
+#if (__STDC__ == 1)
+/* The implementation is ISO-conforming. */
+#define __STDC_ISO__
+#else
+/* The implementation is not ISO-conforming. */
+#endif
+
+#if defined(__STDC_VERSION__)
+#if (__STDC_VERSION__ >= 201112L)
+/* This is C11. */
+#define __STDC_C11__
+#elif (__STDC_VERSION__ >= 199901L)
+/* This is C99. */
+#define __STDC_C99__
+#elif (__STDC_VERSION__ >= 199409L)
+/* This is C89 with amendment 1. */
+#define __STDC_C89__
+#define __STDC_C89_AMENDMENT_1__
+#else
+/* This is C89 without amendment 1. */
+#define __STDC_C89__
+#endif
+#else /* !defined(__STDC_VERSION__) */
+/* This is C89. __STDC_VERSION__ is not defined. */
+#define __STDC_C89__
+#endif
+
+#else   /* !defined(__STDC__) */
+/* This is not standard C. __STDC__ is not defined. */
+#endif
+
+#if defined(WIN32) || defined(_WIN32) || defined(__CYGWIN__) || defined(__MINGW32__)
+/* Try to find out if we're compiling for WinRT or non-WinRT */
+#if defined(_MSC_VER) && defined(__has_include)
+#if __has_include(<winapifamily.h>)
+#define HAVE_WINAPIFAMILY_H 1
+#else
+#define HAVE_WINAPIFAMILY_H 0
+#endif
+
+/* If _USING_V110_SDK71_ is defined it means we are using the Windows XP toolset. */
+#elif defined(_MSC_VER) && (_MSC_VER >= 1700 && !_USING_V110_SDK71_)    /* _MSC_VER == 1700 for Visual Studio 2012 */
+#define HAVE_WINAPIFAMILY_H 1
+#else
+#define HAVE_WINAPIFAMILY_H 0
+#endif
+
+#if HAVE_WINAPIFAMILY_H
+#include <winapifamily.h>
+#define WINAPI_FAMILY_WINRT (!WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_DESKTOP) && WINAPI_FAMILY_PARTITION(WINAPI_PARTITION_APP))
+#else
+#define WINAPI_FAMILY_WINRT 0
+#endif /* HAVE_WINAPIFAMILY_H */
+
+#if WINAPI_FAMILY_WINRT
+#undef __WINRT__
+#define __WINRT__ 1
+#endif
+
+/* MSVC obviously has to have some non-standard constants... */
+#if _M_IX86_FP == 1
+#define __SSE__ 1
+#elif _M_IX86_FP == 2 || (defined(_M_AMD64) || defined(_M_X64))
+#define __SSE__ 1
+#define __SSE2__ 1
+#endif
+
+#endif
+
+#endif

+ 39 - 0
platform/libretro/libretro-common/include/retro_inline.h

@@ -0,0 +1,39 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_inline.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_INLINE_H
+#define __LIBRETRO_SDK_INLINE_H
+
+#ifndef INLINE
+
+#if defined(_WIN32) || defined(__INTEL_COMPILER)
+#define INLINE __inline
+#elif defined(__STDC_VERSION__) && __STDC_VERSION__>=199901L
+#define INLINE inline
+#elif defined(__GNUC__)
+#define INLINE __inline__
+#else
+#define INLINE
+#endif
+
+#endif
+#endif

+ 182 - 0
platform/libretro/libretro-common/include/retro_miscellaneous.h

@@ -0,0 +1,182 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (retro_miscellaneous.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __RARCH_MISCELLANEOUS_H
+#define __RARCH_MISCELLANEOUS_H
+
+#define RARCH_MAX_SUBSYSTEMS 10
+#define RARCH_MAX_SUBSYSTEM_ROMS 10
+
+#include <stdint.h>
+#include <boolean.h>
+#include <retro_inline.h>
+
+#if defined(_WIN32) && !defined(_XBOX)
+#ifndef WIN32_LEAN_AND_MEAN
+#define WIN32_LEAN_AND_MEAN
+#endif
+#include <windows.h>
+#elif defined(_WIN32) && defined(_XBOX)
+#include <Xtl.h>
+#endif
+
+#if defined(__CELLOS_LV2__)
+#include <sys/fs_external.h>
+#endif
+
+#include <limits.h>
+
+#ifdef _MSC_VER
+#include <compat/msvc.h>
+#endif
+
+static INLINE void bits_or_bits(uint32_t *a, uint32_t *b, uint32_t count)
+{
+   uint32_t i;
+   for (i = 0; i < count;i++)
+      a[i] |= b[i];
+}
+
+static INLINE void bits_clear_bits(uint32_t *a, uint32_t *b, uint32_t count)
+{
+   uint32_t i;
+   for (i = 0; i < count;i++)
+      a[i] &= ~b[i];
+}
+
+static INLINE bool bits_any_set(uint32_t* ptr, uint32_t count)
+{
+   uint32_t i;
+   for (i = 0; i < count; i++)
+   {
+      if (ptr[i] != 0)
+         return true;
+   }
+   return false;
+}
+
+#ifndef PATH_MAX_LENGTH
+#if defined(__CELLOS_LV2__)
+#define PATH_MAX_LENGTH CELL_FS_MAX_FS_PATH_LENGTH
+#elif defined(_XBOX1) || defined(_3DS) || defined(PSP) || defined(PS2) || defined(GEKKO)|| defined(WIIU) || defined(ORBIS)
+#define PATH_MAX_LENGTH 512
+#else
+#define PATH_MAX_LENGTH 4096
+#endif
+#endif
+
+#ifndef MAX
+#define MAX(a, b) ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef MIN
+#define MIN(a, b) ((a) < (b) ? (a) : (b))
+#endif
+
+#define ARRAY_SIZE(a)              (sizeof(a) / sizeof((a)[0]))
+
+#define BITS_GET_ELEM(a, i)        ((a).data[i])
+#define BITS_GET_ELEM_PTR(a, i)    ((a)->data[i])
+
+#define BIT_SET(a, bit)   ((a)[(bit) >> 3] |=  (1 << ((bit) & 7)))
+#define BIT_CLEAR(a, bit) ((a)[(bit) >> 3] &= ~(1 << ((bit) & 7)))
+#define BIT_GET(a, bit)   (((a)[(bit) >> 3] >> ((bit) & 7)) & 1)
+
+#define BIT16_SET(a, bit)    ((a) |=  (1 << ((bit) & 15)))
+#define BIT16_CLEAR(a, bit)  ((a) &= ~(1 << ((bit) & 15)))
+#define BIT16_GET(a, bit)    (((a) >> ((bit) & 15)) & 1)
+#define BIT16_CLEAR_ALL(a)   ((a) = 0)
+
+#define BIT32_SET(a, bit)    ((a) |=  (1 << ((bit) & 31)))
+#define BIT32_CLEAR(a, bit)  ((a) &= ~(1 << ((bit) & 31)))
+#define BIT32_GET(a, bit)    (((a) >> ((bit) & 31)) & 1)
+#define BIT32_CLEAR_ALL(a)   ((a) = 0)
+
+#define BIT64_SET(a, bit)    ((a) |=  (UINT64_C(1) << ((bit) & 63)))
+#define BIT64_CLEAR(a, bit)  ((a) &= ~(UINT64_C(1) << ((bit) & 63)))
+#define BIT64_GET(a, bit)    (((a) >> ((bit) & 63)) & 1)
+#define BIT64_CLEAR_ALL(a)   ((a) = 0)
+
+#define BIT128_SET(a, bit)   ((a).data[(bit) >> 5] |=  (1 << ((bit) & 31)))
+#define BIT128_CLEAR(a, bit) ((a).data[(bit) >> 5] &= ~(1 << ((bit) & 31)))
+#define BIT128_GET(a, bit)   (((a).data[(bit) >> 5] >> ((bit) & 31)) & 1)
+#define BIT128_CLEAR_ALL(a)  memset(&(a), 0, sizeof(a))
+
+#define BIT128_SET_PTR(a, bit)   BIT128_SET(*a, bit)
+#define BIT128_CLEAR_PTR(a, bit) BIT128_CLEAR(*a, bit)
+#define BIT128_GET_PTR(a, bit)   BIT128_GET(*a, bit)
+#define BIT128_CLEAR_ALL_PTR(a)  BIT128_CLEAR_ALL(*a)
+
+#define BIT256_SET(a, bit)       BIT128_SET(a, bit)
+#define BIT256_CLEAR(a, bit)     BIT128_CLEAR(a, bit)
+#define BIT256_GET(a, bit)       BIT128_GET(a, bit)
+#define BIT256_CLEAR_ALL(a)      BIT128_CLEAR_ALL(a)
+
+#define BIT256_SET_PTR(a, bit)   BIT256_SET(*a, bit)
+#define BIT256_CLEAR_PTR(a, bit) BIT256_CLEAR(*a, bit)
+#define BIT256_GET_PTR(a, bit)   BIT256_GET(*a, bit)
+#define BIT256_CLEAR_ALL_PTR(a)  BIT256_CLEAR_ALL(*a)
+
+#define BITS_COPY16_PTR(a,bits) \
+{ \
+   BIT128_CLEAR_ALL_PTR(a); \
+   BITS_GET_ELEM_PTR(a, 0) = (bits) & 0xffff; \
+}
+
+#define BITS_COPY32_PTR(a,bits) \
+{ \
+   BIT128_CLEAR_ALL_PTR(a); \
+   BITS_GET_ELEM_PTR(a, 0) = (bits); \
+}
+
+/* Helper macros and struct to keep track of many booleans. */
+/* This struct has 256 bits. */
+typedef struct
+{
+   uint32_t data[8];
+} retro_bits_t;
+
+#ifdef _WIN32
+#  ifdef _WIN64
+#    define PRI_SIZET PRIu64
+#  else
+#    if _MSC_VER == 1800
+#      define PRI_SIZET PRIu32
+#    else
+#      define PRI_SIZET "u"
+#    endif
+#  endif
+#elif PS2
+#  define PRI_SIZET "u"
+#else
+#  if (SIZE_MAX == 0xFFFF)
+#    define PRI_SIZET "hu"
+#  elif (SIZE_MAX == 0xFFFFFFFF)
+#    define PRI_SIZET "u"
+#  elif (SIZE_MAX == 0xFFFFFFFFFFFFFFFF)
+#    define PRI_SIZET "lu"
+#  else
+#    error PRI_SIZET: unknown SIZE_MAX
+#  endif
+#endif
+
+#endif

+ 115 - 0
platform/libretro/libretro-common/include/streams/file_stream.h

@@ -0,0 +1,115 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (file_stream.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_FILE_STREAM_H
+#define __LIBRETRO_SDK_FILE_STREAM_H
+
+#include <stdio.h>
+#include <stdint.h>
+#include <stdlib.h>
+#include <stddef.h>
+
+#include <sys/types.h>
+
+#include <libretro.h>
+#include <retro_common_api.h>
+#include <retro_inline.h>
+#include <boolean.h>
+
+#include <stdarg.h>
+#include <vfs/vfs_implementation.h>
+
+#define FILESTREAM_REQUIRED_VFS_VERSION 2
+
+RETRO_BEGIN_DECLS
+
+typedef struct RFILE RFILE;
+
+#define FILESTREAM_REQUIRED_VFS_VERSION 2
+
+void filestream_vfs_init(const struct retro_vfs_interface_info* vfs_info);
+
+int64_t filestream_get_size(RFILE *stream);
+
+int64_t filestream_truncate(RFILE *stream, int64_t length);
+
+/**
+ * filestream_open:
+ * @path               : path to file
+ * @mode               : file mode to use when opening (read/write)
+ * @bufsize            : optional buffer size (-1 or 0 to use default)
+ *
+ * Opens a file for reading or writing, depending on the requested mode.
+ * Returns a pointer to an RFILE if opened successfully, otherwise NULL.
+ **/
+RFILE* filestream_open(const char *path, unsigned mode, unsigned hints);
+
+int64_t filestream_seek(RFILE *stream, int64_t offset, int seek_position);
+
+int64_t filestream_read(RFILE *stream, void *data, int64_t len);
+
+int64_t filestream_write(RFILE *stream, const void *data, int64_t len);
+
+int64_t filestream_tell(RFILE *stream);
+
+void filestream_rewind(RFILE *stream);
+
+int filestream_close(RFILE *stream);
+
+int64_t filestream_read_file(const char *path, void **buf, int64_t *len);
+
+char* filestream_gets(RFILE *stream, char *s, size_t len);
+
+int filestream_getc(RFILE *stream);
+
+int filestream_scanf(RFILE *stream, const char* format, ...);
+
+int filestream_eof(RFILE *stream);
+
+bool filestream_write_file(const char *path, const void *data, int64_t size);
+
+int filestream_putc(RFILE *stream, int c);
+
+int filestream_vprintf(RFILE *stream, const char* format, va_list args);
+
+int filestream_printf(RFILE *stream, const char* format, ...);
+
+int filestream_error(RFILE *stream);
+
+int filestream_flush(RFILE *stream);
+
+int filestream_delete(const char *path);
+
+int filestream_rename(const char *old_path, const char *new_path);
+
+const char* filestream_get_path(RFILE *stream);
+
+bool filestream_exists(const char *path);
+
+/* Returned pointer must be freed by the caller. */
+char* filestream_getline(RFILE *stream);
+
+libretro_vfs_implementation_file* filestream_get_vfs_handle(RFILE *stream);
+
+RETRO_END_DECLS
+
+#endif

+ 101 - 0
platform/libretro/libretro-common/include/streams/file_stream_transforms.h

@@ -0,0 +1,101 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+*
+* ---------------------------------------------------------------------------------------
+* The following license statement only applies to this file (file_stream_transforms.h).
+* ---------------------------------------------------------------------------------------
+*
+* Permission is hereby granted, free of charge,
+* to any person obtaining a copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation the rights to
+* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef __LIBRETRO_SDK_FILE_STREAM_TRANSFORMS_H
+#define __LIBRETRO_SDK_FILE_STREAM_TRANSFORMS_H
+
+#include <stdint.h>
+#include <string.h>
+#include <retro_common_api.h>
+#include <streams/file_stream.h>
+
+RETRO_BEGIN_DECLS
+
+#ifndef SKIP_STDIO_REDEFINES
+
+#define FILE RFILE
+
+#undef fopen
+#undef fclose
+#undef ftell
+#undef fseek
+#undef fread
+#undef fgets
+#undef fgetc
+#undef fwrite
+#undef fputc
+#undef fflush
+#undef fprintf
+#undef ferror
+#undef feof
+#undef fscanf
+
+#define fopen rfopen
+#define fclose rfclose
+#define ftell rftell
+#define fseek rfseek
+#define fread rfread
+#define fgets rfgets
+#define fgetc rfgetc
+#define fwrite rfwrite
+#define fputc rfputc
+#define fflush rfflush
+#define fprintf rfprintf
+#define ferror rferror
+#define feof rfeof
+#define fscanf rfscanf
+
+#endif
+
+RFILE* rfopen(const char *path, const char *mode);
+
+int rfclose(RFILE* stream);
+
+int64_t rftell(RFILE* stream);
+
+int64_t rfseek(RFILE* stream, int64_t offset, int origin);
+
+int64_t rfread(void* buffer,
+   size_t elem_size, size_t elem_count, RFILE* stream);
+
+char *rfgets(char *buffer, int maxCount, RFILE* stream);
+
+int rfgetc(RFILE* stream);
+
+int64_t rfwrite(void const* buffer,
+   size_t elem_size, size_t elem_count, RFILE* stream);
+
+int rfputc(int character, RFILE * stream);
+
+int64_t rfflush(RFILE * stream);
+
+int rfprintf(RFILE * stream, const char * format, ...);
+
+int rferror(RFILE* stream);
+
+int rfeof(RFILE* stream);
+
+int rfscanf(RFILE * stream, const char * format, ...);
+
+RETRO_END_DECLS
+
+#endif

+ 151 - 0
platform/libretro/libretro-common/include/string/stdstring.h

@@ -0,0 +1,151 @@
+/* Copyright  (C) 2010-2019 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (stdstring.h).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef __LIBRETRO_SDK_STDSTRING_H
+#define __LIBRETRO_SDK_STDSTRING_H
+
+#include <stdlib.h>
+#include <stddef.h>
+#include <ctype.h>
+#include <string.h>
+#include <boolean.h>
+
+#include <retro_common_api.h>
+#include <retro_inline.h>
+#include <compat/strl.h>
+
+RETRO_BEGIN_DECLS
+
+static INLINE bool string_is_empty(const char *data)
+{
+   return !data || (*data == '\0');
+}
+
+static INLINE bool string_is_equal(const char *a, const char *b)
+{
+   return (a && b) ? !strcmp(a, b) : false;
+}
+
+#define STRLEN_CONST(x)                   ((sizeof((x))-1))
+
+#define string_is_not_equal(a, b)         !string_is_equal((a), (b))
+
+#define string_is_not_equal_fast(a, b, size) (memcmp(a, b, size) != 0)
+#define string_is_equal_fast(a, b, size)     (memcmp(a, b, size) == 0)
+
+static INLINE bool string_is_equal_case_insensitive(const char *a,
+      const char *b)
+{
+   int result              = 0;
+   const unsigned char *p1 = (const unsigned char*)a;
+   const unsigned char *p2 = (const unsigned char*)b;
+
+   if (!a || !b)
+      return false;
+   if (p1 == p2)
+      return true;
+
+   while ((result = tolower (*p1) - tolower (*p2++)) == 0)
+      if (*p1++ == '\0')
+         break;
+
+   return (result == 0);
+}
+
+static INLINE bool string_is_equal_noncase(const char *a, const char *b)
+{
+   int result              = 0;
+   const unsigned char *p1 = (const unsigned char*)a;
+   const unsigned char *p2 = (const unsigned char*)b;
+
+   if (!a || !b)
+      return false;
+   if (p1 == p2)
+      return false;
+
+   while ((result = tolower (*p1) - tolower (*p2++)) == 0)
+      if (*p1++ == '\0')
+         break;
+
+   return (result == 0);
+}
+
+char *string_to_upper(char *s);
+
+char *string_to_lower(char *s);
+
+char *string_ucwords(char *s);
+
+char *string_replace_substring(const char *in, const char *pattern,
+      const char *by);
+
+/* Remove leading whitespaces */
+char *string_trim_whitespace_left(char *const s);
+
+/* Remove trailing whitespaces */
+char *string_trim_whitespace_right(char *const s);
+
+/* Remove leading and trailing whitespaces */
+char *string_trim_whitespace(char *const s);
+
+/* max_lines == 0 means no limit */
+char *word_wrap(char *buffer, const char *string,
+      int line_width, bool unicode, unsigned max_lines);
+
+/* Splits string into tokens seperated by 'delim'
+ * > Returned token string must be free()'d
+ * > Returns NULL if token is not found
+ * > After each call, 'str' is set to the position after the
+ *   last found token
+ * > Tokens *include* empty strings
+ * Usage example:
+ *    char *str      = "1,2,3,4,5,6,7,,,10,";
+ *    char **str_ptr = &str;
+ *    char *token    = NULL;
+ *    while((token = string_tokenize(str_ptr, ",")))
+ *    {
+ *        printf("%s\n", token);
+ *        free(token);
+ *        token = NULL;
+ *    }
+ */
+char* string_tokenize(char **str, const char *delim);
+
+/* Removes every instance of character 'c' from 'str' */
+void string_remove_all_chars(char *str, char c);
+
+/* Replaces every instance of character 'find' in 'str'
+ * with character 'replace' */
+void string_replace_all_chars(char *str, char find, char replace);
+
+/* Converts string to unsigned integer.
+ * Returns 0 if string is invalid  */
+unsigned string_to_unsigned(const char *str);
+
+/* Converts hexadecimal string to unsigned integer.
+ * Handles optional leading '0x'.
+ * Returns 0 if string is invalid  */
+unsigned string_hex_to_unsigned(const char *str);
+
+RETRO_END_DECLS
+
+#endif

+ 111 - 0
platform/libretro/libretro-common/include/vfs/vfs.h

@@ -0,0 +1,111 @@
+/* Copyright  (C) 2010-2019 The RetroArch team
+*
+* ---------------------------------------------------------------------------------------
+* The following license statement only applies to this file (vfs_implementation.h).
+* ---------------------------------------------------------------------------------------
+*
+* Permission is hereby granted, free of charge,
+* to any person obtaining a copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation the rights to
+* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef __LIBRETRO_SDK_VFS_H
+#define __LIBRETRO_SDK_VFS_H
+
+#include <retro_common_api.h>
+#include <boolean.h>
+
+#ifdef RARCH_INTERNAL
+#ifndef VFS_FRONTEND
+#define VFS_FRONTEND
+#endif
+#endif
+
+RETRO_BEGIN_DECLS
+
+#ifdef _WIN32
+typedef void* HANDLE;
+#endif
+
+#ifdef HAVE_CDROM
+typedef struct
+{
+   char *cue_buf;
+   size_t cue_len;
+   int64_t byte_pos;
+   char drive;
+   unsigned char cur_min;
+   unsigned char cur_sec;
+   unsigned char cur_frame;
+   unsigned char cur_track;
+   unsigned cur_lba;
+   unsigned last_frame_lba;
+   unsigned char last_frame[2352];
+   bool last_frame_valid;
+} vfs_cdrom_t;
+#endif
+
+enum vfs_scheme
+{
+   VFS_SCHEME_NONE = 0,
+   VFS_SCHEME_CDROM
+};
+
+#ifndef __WINRT__
+#ifdef VFS_FRONTEND
+struct retro_vfs_file_handle
+#else
+struct libretro_vfs_implementation_file
+#endif
+{
+   int fd;
+   unsigned hints;
+   int64_t size;
+   char *buf;
+   FILE *fp;
+#ifdef _WIN32
+   HANDLE fh;
+#endif
+   char* orig_path;
+   uint64_t mappos;
+   uint64_t mapsize;
+   uint8_t *mapped;
+   enum vfs_scheme scheme;
+#ifdef HAVE_CDROM
+   vfs_cdrom_t cdrom;
+#endif
+};
+#endif
+
+/* Replace the following symbol with something appropriate
+ * to signify the file is being compiled for a front end instead of a core.
+ * This allows the same code to act as reference implementation
+ * for VFS and as fallbacks for when the front end does not provide VFS functionality.
+ */
+
+#ifdef VFS_FRONTEND
+typedef struct retro_vfs_file_handle libretro_vfs_implementation_file;
+#else
+typedef struct libretro_vfs_implementation_file libretro_vfs_implementation_file;
+#endif
+
+#ifdef VFS_FRONTEND
+typedef struct retro_vfs_dir_handle libretro_vfs_implementation_dir;
+#else
+typedef struct libretro_vfs_implementation_dir libretro_vfs_implementation_dir;
+#endif
+
+RETRO_END_DECLS
+
+#endif

+ 76 - 0
platform/libretro/libretro-common/include/vfs/vfs_implementation.h

@@ -0,0 +1,76 @@
+/* Copyright  (C) 2010-2019 The RetroArch team
+*
+* ---------------------------------------------------------------------------------------
+* The following license statement only applies to this file (vfs_implementation.h).
+* ---------------------------------------------------------------------------------------
+*
+* Permission is hereby granted, free of charge,
+* to any person obtaining a copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation the rights to
+* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#ifndef __LIBRETRO_SDK_VFS_IMPLEMENTATION_H
+#define __LIBRETRO_SDK_VFS_IMPLEMENTATION_H
+
+#include <stdio.h>
+#include <stdint.h>
+#include <libretro.h>
+#include <retro_environment.h>
+#include <vfs/vfs.h>
+
+RETRO_BEGIN_DECLS
+
+libretro_vfs_implementation_file *retro_vfs_file_open_impl(const char *path, unsigned mode, unsigned hints);
+
+int retro_vfs_file_close_impl(libretro_vfs_implementation_file *stream);
+
+int retro_vfs_file_error_impl(libretro_vfs_implementation_file *stream);
+
+int64_t retro_vfs_file_size_impl(libretro_vfs_implementation_file *stream);
+
+int64_t retro_vfs_file_truncate_impl(libretro_vfs_implementation_file *stream, int64_t length);
+
+int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file *stream);
+
+int64_t retro_vfs_file_seek_impl(libretro_vfs_implementation_file *stream, int64_t offset, int seek_position);
+
+int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file *stream, void *s, uint64_t len);
+
+int64_t retro_vfs_file_write_impl(libretro_vfs_implementation_file *stream, const void *s, uint64_t len);
+
+int retro_vfs_file_flush_impl(libretro_vfs_implementation_file *stream);
+
+int retro_vfs_file_remove_impl(const char *path);
+
+int retro_vfs_file_rename_impl(const char *old_path, const char *new_path);
+
+const char *retro_vfs_file_get_path_impl(libretro_vfs_implementation_file *stream);
+
+int retro_vfs_stat_impl(const char *path, int32_t *size);
+
+int retro_vfs_mkdir_impl(const char *dir);
+
+libretro_vfs_implementation_dir *retro_vfs_opendir_impl(const char *dir, bool include_hidden);
+
+bool retro_vfs_readdir_impl(libretro_vfs_implementation_dir *dirstream);
+
+const char *retro_vfs_dirent_get_name_impl(libretro_vfs_implementation_dir *dirstream);
+
+bool retro_vfs_dirent_is_dir_impl(libretro_vfs_implementation_dir *dirstream);
+
+int retro_vfs_closedir_impl(libretro_vfs_implementation_dir *dirstream);
+
+RETRO_END_DECLS
+
+#endif

+ 620 - 0
platform/libretro/libretro-common/streams/file_stream.c

@@ -0,0 +1,620 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (file_stream.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <stdarg.h>
+#include <ctype.h>
+#include <errno.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <streams/file_stream.h>
+#define VFS_FRONTEND
+#include <vfs/vfs_implementation.h>
+
+static const int64_t vfs_error_return_value      = -1;
+
+static retro_vfs_get_path_t filestream_get_path_cb = NULL;
+static retro_vfs_open_t filestream_open_cb         = NULL;
+static retro_vfs_close_t filestream_close_cb       = NULL;
+static retro_vfs_size_t filestream_size_cb         = NULL;
+static retro_vfs_truncate_t filestream_truncate_cb = NULL;
+static retro_vfs_tell_t filestream_tell_cb         = NULL;
+static retro_vfs_seek_t filestream_seek_cb         = NULL;
+static retro_vfs_read_t filestream_read_cb         = NULL;
+static retro_vfs_write_t filestream_write_cb       = NULL;
+static retro_vfs_flush_t filestream_flush_cb       = NULL;
+static retro_vfs_remove_t filestream_remove_cb     = NULL;
+static retro_vfs_rename_t filestream_rename_cb     = NULL;
+
+struct RFILE
+{
+   struct retro_vfs_file_handle *hfile;
+	bool error_flag;
+	bool eof_flag;
+};
+
+/* VFS Initialization */
+
+void filestream_vfs_init(const struct retro_vfs_interface_info* vfs_info)
+{
+   const struct retro_vfs_interface* vfs_iface;
+
+   filestream_get_path_cb = NULL;
+   filestream_open_cb     = NULL;
+   filestream_close_cb    = NULL;
+   filestream_tell_cb     = NULL;
+   filestream_size_cb     = NULL;
+   filestream_truncate_cb = NULL;
+   filestream_seek_cb     = NULL;
+   filestream_read_cb     = NULL;
+   filestream_write_cb    = NULL;
+   filestream_flush_cb    = NULL;
+   filestream_remove_cb   = NULL;
+   filestream_rename_cb   = NULL;
+
+   vfs_iface              = vfs_info->iface;
+
+   if (vfs_info->required_interface_version < FILESTREAM_REQUIRED_VFS_VERSION
+         || !vfs_iface)
+      return;
+
+   filestream_get_path_cb = vfs_iface->get_path;
+   filestream_open_cb     = vfs_iface->open;
+   filestream_close_cb    = vfs_iface->close;
+   filestream_size_cb     = vfs_iface->size;
+   filestream_truncate_cb = vfs_iface->truncate;
+   filestream_tell_cb     = vfs_iface->tell;
+   filestream_seek_cb     = vfs_iface->seek;
+   filestream_read_cb     = vfs_iface->read;
+   filestream_write_cb    = vfs_iface->write;
+   filestream_flush_cb    = vfs_iface->flush;
+   filestream_remove_cb   = vfs_iface->remove;
+   filestream_rename_cb   = vfs_iface->rename;
+}
+
+/* Callback wrappers */
+bool filestream_exists(const char *path)
+{
+   RFILE *dummy              = NULL;
+
+   if (!path || !*path)
+      return false;
+
+   dummy = filestream_open(path,
+         RETRO_VFS_FILE_ACCESS_READ,
+         RETRO_VFS_FILE_ACCESS_HINT_NONE);
+
+   if (!dummy)
+      return false;
+
+   filestream_close(dummy);
+   return true;
+}
+
+int64_t filestream_get_size(RFILE *stream)
+{
+   int64_t output;
+
+   if (filestream_size_cb != NULL)
+      output = filestream_size_cb(stream->hfile);
+   else
+      output = retro_vfs_file_size_impl((libretro_vfs_implementation_file*)stream->hfile);
+
+   if (output == vfs_error_return_value)
+      stream->error_flag = true;
+
+   return output;
+}
+
+int64_t filestream_truncate(RFILE *stream, int64_t length)
+{
+   int64_t output;
+
+   if (filestream_truncate_cb != NULL)
+      output = filestream_truncate_cb(stream->hfile, length);
+   else
+      output = retro_vfs_file_truncate_impl((libretro_vfs_implementation_file*)stream->hfile, length);
+
+   if (output == vfs_error_return_value)
+      stream->error_flag = true;
+
+   return output;
+}
+
+/**
+ * filestream_open:
+ * @path               : path to file
+ * @mode               : file mode to use when opening (read/write)
+ * @hints              :
+ *
+ * Opens a file for reading or writing, depending on the requested mode.
+ * Returns a pointer to an RFILE if opened successfully, otherwise NULL.
+ **/
+RFILE* filestream_open(const char *path, unsigned mode, unsigned hints)
+{
+   struct retro_vfs_file_handle  *fp = NULL;
+   RFILE* output                     = NULL;
+
+   if (filestream_open_cb != NULL)
+      fp = (struct retro_vfs_file_handle*)
+         filestream_open_cb(path, mode, hints);
+   else
+      fp = (struct retro_vfs_file_handle*)
+         retro_vfs_file_open_impl(path, mode, hints);
+
+   if (!fp)
+      return NULL;
+
+   output             = (RFILE*)malloc(sizeof(RFILE));
+   output->error_flag = false;
+   output->eof_flag   = false;
+   output->hfile      = fp;
+   return output;
+}
+
+char* filestream_gets(RFILE *stream, char *s, size_t len)
+{
+   int c   = 0;
+   char *p = s;
+   if (!stream)
+      return NULL;
+
+   /* get max bytes or up to a newline */
+
+   for (len--; len > 0; len--)
+   {
+      if ((c = filestream_getc(stream)) == EOF)
+         break;
+      *p++ = c;
+      if (c == '\n')
+         break;
+   }
+   *p = 0;
+
+   if (p == s && c == EOF)
+      return NULL;
+   return (s);
+}
+
+int filestream_getc(RFILE *stream)
+{
+   char c = 0;
+   if (!stream)
+      return EOF;
+   if (filestream_read(stream, &c, 1) == 1)
+      return (int)(unsigned char)c;
+   return EOF;
+}
+
+int filestream_scanf(RFILE *stream, const char* format, ...)
+{
+   char buf[4096];
+   char subfmt[64];
+   va_list args;
+
+   const char * bufiter = buf;
+   int64_t startpos     = filestream_tell(stream);
+   int        ret       = 0;
+   int64_t maxlen       = filestream_read(stream, buf, sizeof(buf)-1);
+
+   if (maxlen <= 0)
+      return EOF;
+
+   buf[maxlen] = '\0';
+
+   va_start(args, format);
+
+   while (*format)
+   {
+      if (*format == '%')
+      {
+         int sublen;
+
+         char* subfmtiter = subfmt;
+         bool asterisk    = false;
+
+         *subfmtiter++    = *format++; /* '%' */
+
+         /* %[*][width][length]specifier */
+
+         if (*format == '*')
+         {
+            asterisk = true;
+            *subfmtiter++ = *format++;
+         }
+
+         while (isdigit(*format)) *subfmtiter++ = *format++; /* width */
+
+         /* length */
+         if (*format == 'h' || *format == 'l')
+         {
+            if (format[1] == format[0]) *subfmtiter++ = *format++;
+            *subfmtiter++ = *format++;
+         }
+         else if (*format == 'j' || *format == 'z' || *format == 't' || *format == 'L')
+         {
+            *subfmtiter++ = *format++;
+         }
+
+         /* specifier - always a single character (except ]) */
+         if (*format == '[')
+         {
+            while (*format != ']') *subfmtiter++ = *format++;
+            *subfmtiter++ = *format++;
+         }
+         else *subfmtiter++ = *format++;
+
+         *subfmtiter++ = '%';
+         *subfmtiter++ = 'n';
+         *subfmtiter++ = '\0';
+
+         if (sizeof(void*) != sizeof(long*)) abort(); /* all pointers must have the same size */
+         if (asterisk)
+         {
+            if (sscanf(bufiter, subfmt, &sublen) != 0) break;
+         }
+         else
+         {
+            if (sscanf(bufiter, subfmt, va_arg(args, void*), &sublen) != 1) break;
+         }
+
+         ret++;
+         bufiter += sublen;
+      }
+      else if (isspace(*format))
+      {
+         while (isspace(*bufiter)) bufiter++;
+         format++;
+      }
+      else
+      {
+         if (*bufiter != *format)
+            break;
+         bufiter++;
+         format++;
+      }
+   }
+
+   va_end(args);
+   filestream_seek(stream, startpos+(bufiter-buf), RETRO_VFS_SEEK_POSITION_START);
+
+   return ret;
+}
+
+int64_t filestream_seek(RFILE *stream, int64_t offset, int seek_position)
+{
+   int64_t output;
+
+   if (filestream_seek_cb != NULL)
+      output = filestream_seek_cb(stream->hfile, offset, seek_position);
+   else
+      output = retro_vfs_file_seek_impl((libretro_vfs_implementation_file*)stream->hfile, offset, seek_position);
+
+   if (output == vfs_error_return_value)
+      stream->error_flag = true;
+   stream->eof_flag = false;
+
+   return output;
+}
+
+int filestream_eof(RFILE *stream)
+{
+   return stream->eof_flag;
+}
+
+int64_t filestream_tell(RFILE *stream)
+{
+   int64_t output;
+
+   if (filestream_size_cb != NULL)
+      output = filestream_tell_cb(stream->hfile);
+   else
+      output = retro_vfs_file_tell_impl((libretro_vfs_implementation_file*)stream->hfile);
+
+   if (output == vfs_error_return_value)
+      stream->error_flag = true;
+
+   return output;
+}
+
+void filestream_rewind(RFILE *stream)
+{
+   if (!stream)
+      return;
+   filestream_seek(stream, 0L, RETRO_VFS_SEEK_POSITION_START);
+   stream->error_flag = false;
+   stream->eof_flag = false;
+}
+
+int64_t filestream_read(RFILE *stream, void *s, int64_t len)
+{
+   int64_t output;
+
+   if (filestream_read_cb != NULL)
+      output = filestream_read_cb(stream->hfile, s, len);
+   else
+      output = retro_vfs_file_read_impl(
+            (libretro_vfs_implementation_file*)stream->hfile, s, len);
+
+   if (output == vfs_error_return_value)
+      stream->error_flag = true;
+   if (output < len)
+      stream->eof_flag = true;
+
+   return output;
+}
+
+int filestream_flush(RFILE *stream)
+{
+   int output;
+
+   if (filestream_flush_cb != NULL)
+      output = filestream_flush_cb(stream->hfile);
+   else
+      output = retro_vfs_file_flush_impl((libretro_vfs_implementation_file*)stream->hfile);
+
+   if (output == vfs_error_return_value)
+      stream->error_flag = true;
+
+   return output;
+}
+
+int filestream_delete(const char *path)
+{
+   if (filestream_remove_cb != NULL)
+      return filestream_remove_cb(path);
+
+   return retro_vfs_file_remove_impl(path);
+}
+
+int filestream_rename(const char *old_path, const char *new_path)
+{
+   if (filestream_rename_cb != NULL)
+      return filestream_rename_cb(old_path, new_path);
+
+   return retro_vfs_file_rename_impl(old_path, new_path);
+}
+
+const char* filestream_get_path(RFILE *stream)
+{
+   if (filestream_get_path_cb != NULL)
+      return filestream_get_path_cb(stream->hfile);
+
+   return retro_vfs_file_get_path_impl((libretro_vfs_implementation_file*)stream->hfile);
+}
+
+int64_t filestream_write(RFILE *stream, const void *s, int64_t len)
+{
+   int64_t output;
+
+   if (filestream_write_cb != NULL)
+      output = filestream_write_cb(stream->hfile, s, len);
+   else
+      output = retro_vfs_file_write_impl((libretro_vfs_implementation_file*)stream->hfile, s, len);
+
+   if (output == vfs_error_return_value)
+      stream->error_flag = true;
+
+   return output;
+}
+
+int filestream_putc(RFILE *stream, int c)
+{
+   char c_char = (char)c;
+   if (!stream)
+      return EOF;
+   return filestream_write(stream, &c_char, 1)==1 ? (int)(unsigned char)c : EOF;
+}
+
+int filestream_vprintf(RFILE *stream, const char* format, va_list args)
+{
+   static char buffer[8 * 1024];
+   int64_t num_chars = vsprintf(buffer, format, args);
+
+   if (num_chars < 0)
+      return -1;
+   else if (num_chars == 0)
+      return 0;
+
+   return (int)filestream_write(stream, buffer, num_chars);
+}
+
+int filestream_printf(RFILE *stream, const char* format, ...)
+{
+   va_list vl;
+   int result;
+   va_start(vl, format);
+   result = filestream_vprintf(stream, format, vl);
+   va_end(vl);
+   return result;
+}
+
+int filestream_error(RFILE *stream)
+{
+   if (stream && stream->error_flag)
+      return 1;
+   return 0;
+}
+
+int filestream_close(RFILE *stream)
+{
+   int output;
+   struct retro_vfs_file_handle* fp = stream->hfile;
+
+   if (filestream_close_cb != NULL)
+      output = filestream_close_cb(fp);
+   else
+      output = retro_vfs_file_close_impl((libretro_vfs_implementation_file*)fp);
+
+   if (output == 0)
+      free(stream);
+
+   return output;
+}
+
+/**
+ * filestream_read_file:
+ * @path             : path to file.
+ * @buf              : buffer to allocate and read the contents of the
+ *                     file into. Needs to be freed manually.
+ *
+ * Read the contents of a file into @buf.
+ *
+ * Returns: number of items read, -1 on error.
+ */
+int64_t filestream_read_file(const char *path, void **buf, int64_t *len)
+{
+   int64_t ret              = 0;
+   int64_t content_buf_size = 0;
+   void *content_buf        = NULL;
+   RFILE *file              = filestream_open(path,
+         RETRO_VFS_FILE_ACCESS_READ,
+         RETRO_VFS_FILE_ACCESS_HINT_NONE);
+
+   if (!file)
+   {
+      fprintf(stderr, "Failed to open %s: %s\n", path, strerror(errno));
+      goto error;
+   }
+
+   content_buf_size = filestream_get_size(file);
+
+   if (content_buf_size < 0)
+      goto error;
+
+   content_buf      = malloc((size_t)(content_buf_size + 1));
+
+   if (!content_buf)
+      goto error;
+   if ((int64_t)(uint64_t)(content_buf_size + 1) != (content_buf_size + 1))
+      goto error;
+
+   ret = filestream_read(file, content_buf, (int64_t)content_buf_size);
+   if (ret < 0)
+   {
+      fprintf(stderr, "Failed to read %s: %s\n", path, strerror(errno));
+      goto error;
+   }
+
+   filestream_close(file);
+
+   *buf    = content_buf;
+
+   /* Allow for easy reading of strings to be safe.
+    * Will only work with sane character formatting (Unix). */
+   ((char*)content_buf)[ret] = '\0';
+
+   if (len)
+      *len = ret;
+
+   return 1;
+
+error:
+   if (file)
+      filestream_close(file);
+   if (content_buf)
+      free(content_buf);
+   if (len)
+      *len = -1;
+   *buf = NULL;
+   return 0;
+}
+
+/**
+ * filestream_write_file:
+ * @path             : path to file.
+ * @data             : contents to write to the file.
+ * @size             : size of the contents.
+ *
+ * Writes data to a file.
+ *
+ * Returns: true (1) on success, false (0) otherwise.
+ */
+bool filestream_write_file(const char *path, const void *data, int64_t size)
+{
+   int64_t ret   = 0;
+   RFILE *file   = filestream_open(path,
+         RETRO_VFS_FILE_ACCESS_WRITE,
+         RETRO_VFS_FILE_ACCESS_HINT_NONE);
+   if (!file)
+      return false;
+
+   ret = filestream_write(file, data, size);
+   filestream_close(file);
+
+   if (ret != size)
+      return false;
+
+   return true;
+}
+
+/* Returned pointer must be freed by the caller. */
+char* filestream_getline(RFILE *stream)
+{
+   char *newline_tmp  = NULL;
+   size_t cur_size    = 8;
+   size_t idx         = 0;
+   int in             = 0;
+   char *newline      = (char*)malloc(9);
+
+   if (!stream || !newline)
+   {
+      if (newline)
+         free(newline);
+      return NULL;
+   }
+
+   in                 = filestream_getc(stream);
+
+   while (in != EOF && in != '\n')
+   {
+      if (idx == cur_size)
+      {
+         cur_size    *= 2;
+         newline_tmp  = (char*)realloc(newline, cur_size + 1);
+
+         if (!newline_tmp)
+         {
+            free(newline);
+            return NULL;
+         }
+
+         newline     = newline_tmp;
+      }
+
+      newline[idx++] = in;
+      in             = filestream_getc(stream);
+   }
+
+   newline[idx]      = '\0';
+   return newline;
+}
+
+libretro_vfs_implementation_file* filestream_get_vfs_handle(RFILE *stream)
+{
+   return (libretro_vfs_implementation_file*)stream->hfile;
+}

+ 159 - 0
platform/libretro/libretro-common/streams/file_stream_transforms.c

@@ -0,0 +1,159 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+*
+* ---------------------------------------------------------------------------------------
+* The following license statement only applies to this file (file_stream_transforms.c).
+* ---------------------------------------------------------------------------------------
+*
+* Permission is hereby granted, free of charge,
+* to any person obtaining a copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation the rights to
+* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <string.h>
+#include <stdarg.h>
+
+#include <libretro.h>
+#include <streams/file_stream.h>
+
+RFILE* rfopen(const char *path, const char *mode)
+{
+   RFILE          *output  = NULL;
+   unsigned int retro_mode = RETRO_VFS_FILE_ACCESS_READ;
+   bool position_to_end    = false;
+
+   if (strstr(mode, "r"))
+   {
+      retro_mode = RETRO_VFS_FILE_ACCESS_READ;
+      if (strstr(mode, "+"))
+      {
+         retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE |
+            RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
+      }
+   }
+   else if (strstr(mode, "w"))
+   {
+      retro_mode = RETRO_VFS_FILE_ACCESS_WRITE;
+      if (strstr(mode, "+"))
+         retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE;
+   }
+   else if (strstr(mode, "a"))
+   {
+      retro_mode = RETRO_VFS_FILE_ACCESS_WRITE |
+         RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
+      position_to_end = true;
+      if (strstr(mode, "+"))
+      {
+         retro_mode = RETRO_VFS_FILE_ACCESS_READ_WRITE |
+            RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING;
+      }
+   }
+
+   output = filestream_open(path, retro_mode,
+         RETRO_VFS_FILE_ACCESS_HINT_NONE);
+   if (output && position_to_end)
+      filestream_seek(output, 0, RETRO_VFS_SEEK_POSITION_END);
+
+   return output;
+}
+
+int rfclose(RFILE* stream)
+{
+   return filestream_close(stream);
+}
+
+int64_t rftell(RFILE* stream)
+{
+   return filestream_tell(stream);
+}
+
+int64_t rfseek(RFILE* stream, int64_t offset, int origin)
+{
+   int seek_position = -1;
+   switch (origin)
+   {
+      case SEEK_SET:
+         seek_position = RETRO_VFS_SEEK_POSITION_START;
+         break;
+      case SEEK_CUR:
+         seek_position = RETRO_VFS_SEEK_POSITION_CURRENT;
+         break;
+      case SEEK_END:
+         seek_position = RETRO_VFS_SEEK_POSITION_END;
+         break;
+   }
+
+   return filestream_seek(stream, offset, seek_position);
+}
+
+int64_t rfread(void* buffer,
+   size_t elem_size, size_t elem_count, RFILE* stream)
+{
+   return (filestream_read(stream, buffer, elem_size * elem_count) / elem_size);
+}
+
+char *rfgets(char *buffer, int maxCount, RFILE* stream)
+{
+   return filestream_gets(stream, buffer, maxCount);
+}
+
+int rfgetc(RFILE* stream)
+{
+   return filestream_getc(stream);
+}
+
+int64_t rfwrite(void const* buffer,
+   size_t elem_size, size_t elem_count, RFILE* stream)
+{
+   return filestream_write(stream, buffer, elem_size * elem_count);
+}
+
+int rfputc(int character, RFILE * stream)
+{
+    return filestream_putc(stream, character);
+}
+
+int64_t rfflush(RFILE * stream)
+{
+    return filestream_flush(stream);
+}
+
+int rfprintf(RFILE * stream, const char * format, ...)
+{
+   int result;
+   va_list vl;
+   va_start(vl, format);
+   result = filestream_vprintf(stream, format, vl);
+   va_end(vl);
+   return result;
+}
+
+int rferror(RFILE* stream)
+{
+   return filestream_error(stream);
+}
+
+int rfeof(RFILE* stream)
+{
+   return filestream_eof(stream);
+}
+
+int rfscanf(RFILE * stream, const char * format, ...)
+{
+   int result;
+   va_list vl;
+   va_start(vl, format);
+   result = filestream_scanf(stream, format, vl);
+   va_end(vl);
+   return result;
+}

+ 384 - 0
platform/libretro/libretro-common/string/stdstring.c

@@ -0,0 +1,384 @@
+/* Copyright  (C) 2010-2018 The RetroArch team
+ *
+ * ---------------------------------------------------------------------------------------
+ * The following license statement only applies to this file (stdstring.c).
+ * ---------------------------------------------------------------------------------------
+ *
+ * Permission is hereby granted, free of charge,
+ * to any person obtaining a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+ * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+ * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <stdint.h>
+#include <ctype.h>
+
+#include <string/stdstring.h>
+#include <encodings/utf.h>
+
+char *string_to_upper(char *s)
+{
+   char *cs = (char *)s;
+   for ( ; *cs != '\0'; cs++)
+      *cs = toupper((unsigned char)*cs);
+   return s;
+}
+
+char *string_to_lower(char *s)
+{
+   char *cs = (char *)s;
+   for ( ; *cs != '\0'; cs++)
+      *cs = tolower((unsigned char)*cs);
+   return s;
+}
+
+char *string_ucwords(char *s)
+{
+   char *cs = (char *)s;
+   for ( ; *cs != '\0'; cs++)
+   {
+      if (*cs == ' ')
+         *(cs+1) = toupper((unsigned char)*(cs+1));
+   }
+
+   s[0] = toupper((unsigned char)s[0]);
+   return s;
+}
+
+char *string_replace_substring(const char *in,
+      const char *pattern, const char *replacement)
+{
+   size_t numhits, pattern_len, replacement_len, outlen;
+   const char *inat   = NULL;
+   const char *inprev = NULL;
+   char          *out = NULL;
+   char        *outat = NULL;
+
+   /* if either pattern or replacement is NULL,
+    * duplicate in and let caller handle it. */
+   if (!pattern || !replacement)
+      return strdup(in);
+
+   pattern_len     = strlen(pattern);
+   replacement_len = strlen(replacement);
+   numhits         = 0;
+   inat            = in;
+
+   while ((inat = strstr(inat, pattern)))
+   {
+      inat += pattern_len;
+      numhits++;
+   }
+
+   outlen          = strlen(in) - pattern_len*numhits + replacement_len*numhits;
+   out             = (char *)malloc(outlen+1);
+
+   if (!out)
+      return NULL;
+
+   outat           = out;
+   inat            = in;
+   inprev          = in;
+
+   while ((inat = strstr(inat, pattern)))
+   {
+      memcpy(outat, inprev, inat-inprev);
+      outat += inat-inprev;
+      memcpy(outat, replacement, replacement_len);
+      outat += replacement_len;
+      inat += pattern_len;
+      inprev = inat;
+   }
+   strcpy(outat, inprev);
+
+   return out;
+}
+
+/* Remove leading whitespaces */
+char *string_trim_whitespace_left(char *const s)
+{
+   if(s && *s)
+   {
+      size_t len     = strlen(s);
+      char *current  = s;
+
+      while(*current && isspace((unsigned char)*current))
+      {
+         ++current;
+         --len;
+      }
+
+      if(s != current)
+         memmove(s, current, len + 1);
+   }
+
+   return s;
+}
+
+/* Remove trailing whitespaces */
+char *string_trim_whitespace_right(char *const s)
+{
+   if(s && *s)
+   {
+      size_t len     = strlen(s);
+      char  *current = s + len - 1;
+
+      while(current != s && isspace((unsigned char)*current))
+      {
+         --current;
+         --len;
+      }
+
+      current[isspace((unsigned char)*current) ? 0 : 1] = '\0';
+   }
+
+   return s;
+}
+
+/* Remove leading and trailing whitespaces */
+char *string_trim_whitespace(char *const s)
+{
+   string_trim_whitespace_right(s);  /* order matters */
+   string_trim_whitespace_left(s);
+
+   return s;
+}
+
+char *word_wrap(char* buffer, const char *string, int line_width, bool unicode, unsigned max_lines)
+{
+   unsigned i     = 0;
+   unsigned len   = (unsigned)strlen(string);
+   unsigned lines = 1;
+
+   while (i < len)
+   {
+      unsigned counter;
+      int pos = (int)(&buffer[i] - buffer);
+
+      /* copy string until the end of the line is reached */
+      for (counter = 1; counter <= (unsigned)line_width; counter++)
+      {
+         const char *character;
+         unsigned char_len;
+         unsigned j = i;
+
+         /* check if end of string reached */
+         if (i == len)
+         {
+            buffer[i] = 0;
+            return buffer;
+         }
+
+         character = utf8skip(&string[i], 1);
+         char_len  = (unsigned)(character - &string[i]);
+
+         if (!unicode)
+            counter += char_len - 1;
+
+         do
+         {
+            buffer[i] = string[i];
+            char_len--;
+            i++;
+         } while(char_len);
+
+         /* check for newlines embedded in the original input
+          * and reset the index */
+         if (buffer[j] == '\n')
+         {
+            lines++;
+            counter = 1;
+         }
+      }
+
+      /* check for whitespace */
+      if (string[i] == ' ')
+      {
+         if ((max_lines == 0 || lines < max_lines))
+         {
+            buffer[i] = '\n';
+            i++;
+            lines++;
+         }
+      }
+      else
+      {
+         int k;
+
+         /* check for nearest whitespace back in string */
+         for (k = i; k > 0; k--)
+         {
+            if (string[k] != ' ' || (max_lines != 0 && lines >= max_lines))
+               continue;
+
+            buffer[k] = '\n';
+            /* set string index back to character after this one */
+            i         = k + 1;
+            lines++;
+            break;
+         }
+
+         if (&buffer[i] - buffer == pos)
+            return buffer;
+      }
+   }
+
+   buffer[i] = 0;
+
+   return buffer;
+}
+
+/* Splits string into tokens seperated by 'delim'
+ * > Returned token string must be free()'d
+ * > Returns NULL if token is not found
+ * > After each call, 'str' is set to the position after the
+ *   last found token
+ * > Tokens *include* empty strings
+ * Usage example:
+ *    char *str      = "1,2,3,4,5,6,7,,,10,";
+ *    char **str_ptr = &str;
+ *    char *token    = NULL;
+ *    while((token = string_tokenize(str_ptr, ",")))
+ *    {
+ *        printf("%s\n", token);
+ *        free(token);
+ *        token = NULL;
+ *    }
+ */
+char* string_tokenize(char **str, const char *delim)
+{
+   /* Taken from https://codereview.stackexchange.com/questions/216956/strtok-function-thread-safe-supports-empty-tokens-doesnt-change-string# */
+   char *str_ptr    = NULL;
+   char *delim_ptr  = NULL;
+   char *token      = NULL;
+   size_t token_len = 0;
+
+   /* Sanity checks */
+   if (!str || string_is_empty(delim))
+      return NULL;
+
+   str_ptr = *str;
+
+   /* Note: we don't check string_is_empty() here,
+    * empty strings are valid */
+   if (!str_ptr)
+      return NULL;
+
+   /* Search for delimiter */
+   delim_ptr = strstr(str_ptr, delim);
+
+   if (delim_ptr)
+      token_len = delim_ptr - str_ptr;
+   else
+      token_len = strlen(str_ptr);
+
+   /* Allocate token string */
+   token = (char *)malloc((token_len + 1) * sizeof(char));
+
+   if (!token)
+      return NULL;
+
+   /* Copy token */
+   strlcpy(token, str_ptr, (token_len + 1) * sizeof(char));
+   token[token_len] = '\0';
+
+   /* Update input string pointer */
+   *str = delim_ptr ? delim_ptr + strlen(delim) : NULL;
+
+   return token;
+}
+
+/* Removes every instance of character 'c' from 'str' */
+void string_remove_all_chars(char *str, char c)
+{
+   char *read_ptr  = NULL;
+   char *write_ptr = NULL;
+
+   if (string_is_empty(str))
+      return;
+
+   read_ptr  = str;
+   write_ptr = str;
+
+   while (*read_ptr != '\0')
+   {
+      *write_ptr = *read_ptr++;
+      write_ptr += (*write_ptr != c) ? 1 : 0;
+   }
+
+   *write_ptr = '\0';
+}
+
+/* Replaces every instance of character 'find' in 'str'
+ * with character 'replace' */
+void string_replace_all_chars(char *str, char find, char replace)
+{
+   char *str_ptr = str;
+
+   if (string_is_empty(str))
+      return;
+
+   while((str_ptr = strchr(str_ptr, find)) != NULL)
+      *str_ptr++ = replace;
+}
+
+/* Converts string to unsigned integer.
+ * Returns 0 if string is invalid  */
+unsigned string_to_unsigned(const char *str)
+{
+   const char *ptr = NULL;
+
+   if (string_is_empty(str))
+      return 0;
+
+   for (ptr = str; *ptr != '\0'; ptr++)
+   {
+      if (!isdigit(*ptr))
+         return 0;
+   }
+
+   return (unsigned)strtoul(str, NULL, 10);
+}
+
+/* Converts hexadecimal string to unsigned integer.
+ * Handles optional leading '0x'.
+ * Returns 0 if string is invalid  */
+unsigned string_hex_to_unsigned(const char *str)
+{
+   const char *hex_str = str;
+   const char *ptr     = NULL;
+   size_t len;
+
+   if (string_is_empty(str))
+      return 0;
+
+   /* Remove leading '0x', if required */
+   len = strlen(str);
+
+   if (len >= 2)
+      if ((str[0] == '0') &&
+          ((str[1] == 'x') || (str[1] == 'X')))
+         hex_str = str + 2;
+
+   if (string_is_empty(hex_str))
+      return 0;
+
+   /* Check for valid characters */
+   for (ptr = hex_str; *ptr != '\0'; ptr++)
+   {
+      if (!isxdigit(*ptr))
+         return 0;
+   }
+
+   return (unsigned)strtoul(hex_str, NULL, 16);
+}

+ 1340 - 0
platform/libretro/libretro-common/vfs/vfs_implementation.c

@@ -0,0 +1,1340 @@
+/* Copyright  (C) 2010-2019 The RetroArch team
+*
+* ---------------------------------------------------------------------------------------
+* The following license statement only applies to this file (vfs_implementation.c).
+* ---------------------------------------------------------------------------------------
+*
+* Permission is hereby granted, free of charge,
+* to any person obtaining a copy of this software and associated documentation files (the "Software"),
+* to deal in the Software without restriction, including without limitation the rights to
+* use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
+* and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
+* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*/
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/types.h>
+
+#include <string/stdstring.h>
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#if defined(_WIN32)
+#  ifdef _MSC_VER
+#    define setmode _setmode
+#  endif
+#include <sys/stat.h>
+#  ifdef _XBOX
+#    include <xtl.h>
+#    define INVALID_FILE_ATTRIBUTES -1
+#  else
+
+#    include <fcntl.h>
+#    include <direct.h>
+#    include <windows.h>
+#  endif
+#    include <io.h>
+#else
+#  if defined(PSP)
+#    include <pspiofilemgr.h>
+#  endif
+#  if defined(PS2)
+#    include <fileXio_rpc.h>
+#    include <fileXio_cdvd.h>
+#  endif
+#  include <sys/types.h>
+#  include <sys/stat.h>
+#  if !defined(VITA)
+#  include <dirent.h>
+#  endif
+#  include <unistd.h>
+#  if defined(ORBIS)
+#  include <sys/fcntl.h>
+#  include <sys/dirent.h>
+#  include <orbisFile.h>
+#  endif
+#endif
+
+#ifdef __CELLOS_LV2__
+#include <cell/cell_fs.h>
+#define O_RDONLY CELL_FS_O_RDONLY
+#define O_WRONLY CELL_FS_O_WRONLY
+#define O_CREAT CELL_FS_O_CREAT
+#define O_TRUNC CELL_FS_O_TRUNC
+#define O_RDWR CELL_FS_O_RDWR
+#else
+#include <fcntl.h>
+#endif
+
+/* TODO: Some things are duplicated but I'm really afraid of breaking other platforms by touching this */
+#if defined(VITA)
+#  include <psp2/io/fcntl.h>
+#  include <psp2/io/dirent.h>
+#  include <psp2/io/stat.h>
+#elif defined(ORBIS)
+#  include <orbisFile.h>
+#  include <ps4link.h>
+#  include <sys/dirent.h>
+#  include <sys/fcntl.h>
+#elif !defined(_WIN32)
+#  if defined(PSP)
+#    include <pspiofilemgr.h>
+#  endif
+#  if defined(PS2)
+#    include <fileXio_rpc.h>
+#  endif
+#  include <sys/types.h>
+#  include <sys/stat.h>
+#  include <dirent.h>
+#  include <unistd.h>
+#endif
+
+#if (defined(__CELLOS_LV2__) && !defined(__PSL1GHT__)) || defined(__QNX__) || defined(PSP) || defined(PS2)
+#include <unistd.h> /* stat() is defined here */
+#endif
+
+#ifdef __APPLE__
+#include <CoreFoundation/CoreFoundation.h>
+#endif
+#ifdef __HAIKU__
+#include <kernel/image.h>
+#endif
+#ifndef __MACH__
+#include <compat/strl.h>
+#include <compat/posix_string.h>
+#endif
+#include <compat/strcasestr.h>
+#include <retro_miscellaneous.h>
+#include <encodings/utf.h>
+
+#if defined(_WIN32)
+#ifndef _XBOX
+#if defined(_MSC_VER) && _MSC_VER <= 1200
+#define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
+#endif
+#endif
+#elif defined(VITA)
+#define SCE_ERROR_ERRNO_EEXIST 0x80010011
+#include <psp2/io/fcntl.h>
+#include <psp2/io/dirent.h>
+#include <psp2/io/stat.h>
+#else
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#endif
+
+#if defined(ORBIS)
+#include <orbisFile.h>
+#include <sys/fcntl.h>
+#include <sys/dirent.h>
+#endif
+#if defined(PSP)
+#include <pspkernel.h>
+#endif
+
+#if defined(PS2)
+#include <fileXio_rpc.h>
+#include <fileXio.h>
+#endif
+
+#if defined(__CELLOS_LV2__)
+#include <cell/cell_fs.h>
+#endif
+
+#if defined(VITA)
+#define FIO_S_ISDIR SCE_S_ISDIR
+#endif
+
+#if (defined(__CELLOS_LV2__) && !defined(__PSL1GHT__)) || defined(__QNX__) || defined(PSP)
+#include <unistd.h> /* stat() is defined here */
+#endif
+
+/* Assume W-functions do not work below Win2K and Xbox platforms */
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500 || defined(_XBOX)
+
+#ifndef LEGACY_WIN32
+#define LEGACY_WIN32
+#endif
+
+#endif
+
+#if defined(_WIN32)
+#if !defined(_MSC_VER) || (defined(_MSC_VER) && _MSC_VER >= 1400)
+#define ATLEAST_VC2005
+#endif
+#endif
+
+#include <vfs/vfs_implementation.h>
+#include <libretro.h>
+#include <memmap.h>
+#include <encodings/utf.h>
+#include <compat/fopen_utf8.h>
+#include <file/file_path.h>
+
+#ifdef HAVE_CDROM
+#include <vfs/vfs_implementation_cdrom.h>
+#endif
+
+#define RFILE_HINT_UNBUFFERED (1 << 8)
+
+int64_t retro_vfs_file_seek_internal(libretro_vfs_implementation_file *stream, int64_t offset, int whence)
+{
+   if (!stream)
+      return -1;
+
+   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
+   {
+#ifdef HAVE_CDROM
+      if (stream->scheme == VFS_SCHEME_CDROM)
+         return retro_vfs_file_seek_cdrom(stream, offset, whence);
+#endif
+/* VC2005 and up have a special 64-bit fseek */
+#ifdef ATLEAST_VC2005
+      return _fseeki64(stream->fp, offset, whence);
+#elif defined(__CELLOS_LV2__) || defined(_MSC_VER) && _MSC_VER <= 1310
+      return fseek(stream->fp, (long)offset, whence);
+#elif defined(PS2)
+      {
+         int64_t ret = fileXioLseek(fileno(stream->fp), (off_t)offset, whence);
+         /* fileXioLseek could return positive numbers */
+         if (ret > 0)
+            return 0;
+         return ret;
+      }
+#elif defined(ORBIS)
+      {
+         int ret = orbisLseek(stream->fd, offset, whence);
+         if (ret < 0)
+            return -1;
+         return 0;
+      }
+#else
+      return fseeko(stream->fp, (off_t)offset, whence);
+#endif
+   }
+#ifdef HAVE_MMAP
+   /* Need to check stream->mapped because this function is
+    * called in filestream_open() */
+   if (stream->mapped && stream->hints &
+         RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
+   {
+      /* fseek() returns error on under/overflow but
+       * allows cursor > EOF for
+       read-only file descriptors. */
+      switch (whence)
+      {
+         case SEEK_SET:
+            if (offset < 0)
+               return -1;
+
+            stream->mappos = offset;
+            break;
+
+         case SEEK_CUR:
+            if (  (offset < 0 && stream->mappos + offset > stream->mappos) ||
+                  (offset > 0 && stream->mappos + offset < stream->mappos))
+               return -1;
+
+            stream->mappos += offset;
+            break;
+
+         case SEEK_END:
+            if (stream->mapsize + offset < stream->mapsize)
+               return -1;
+
+            stream->mappos = stream->mapsize + offset;
+            break;
+      }
+      return stream->mappos;
+   }
+#endif
+
+   if (lseek(stream->fd, offset, whence) < 0)
+      return -1;
+
+   return 0;
+}
+
+/**
+ * retro_vfs_file_open_impl:
+ * @path               : path to file
+ * @mode               : file mode to use when opening (read/write)
+ * @hints              :
+ *
+ * Opens a file for reading or writing, depending on the requested mode.
+ * Returns a pointer to an RFILE if opened successfully, otherwise NULL.
+ **/
+
+libretro_vfs_implementation_file *retro_vfs_file_open_impl(
+      const char *path, unsigned mode, unsigned hints)
+{
+   int                                flags = 0;
+   const char                     *mode_str = NULL;
+   libretro_vfs_implementation_file *stream = (libretro_vfs_implementation_file*)
+      calloc(1, sizeof(*stream));
+#if defined(VFS_FRONTEND) || defined(HAVE_CDROM)
+   int                             path_len = (int)strlen(path);
+#endif
+
+#ifdef VFS_FRONTEND
+   const char                 *dumb_prefix  = "vfsonly://";
+   size_t                   dumb_prefix_siz = strlen(dumb_prefix);
+   int                      dumb_prefix_len = (int)dumb_prefix_siz;
+
+   if (path_len >= dumb_prefix_len)
+   {
+      if (!memcmp(path, dumb_prefix, dumb_prefix_len))
+         path += dumb_prefix_siz;
+   }
+#endif
+
+#ifdef HAVE_CDROM
+   {
+      const char *cdrom_prefix = "cdrom://";
+      size_t cdrom_prefix_siz = strlen(cdrom_prefix);
+      int cdrom_prefix_len = (int)cdrom_prefix_siz;
+
+      if (path_len > cdrom_prefix_len)
+      {
+         if (!memcmp(path, cdrom_prefix, cdrom_prefix_len))
+         {
+            path += cdrom_prefix_siz;
+            stream->scheme = VFS_SCHEME_CDROM;
+         }
+      }
+   }
+#endif
+
+   if (!stream)
+      return NULL;
+
+   (void)flags;
+
+   stream->hints           = hints;
+   stream->orig_path       = strdup(path);
+
+#ifdef HAVE_MMAP
+   if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS && mode == RETRO_VFS_FILE_ACCESS_READ)
+      stream->hints |= RFILE_HINT_UNBUFFERED;
+   else
+#endif
+      stream->hints &= ~RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS;
+
+   switch (mode)
+   {
+      case RETRO_VFS_FILE_ACCESS_READ:
+         mode_str = "rb";
+
+         flags    = O_RDONLY;
+#ifdef _WIN32
+         flags   |= O_BINARY;
+#endif
+         break;
+
+      case RETRO_VFS_FILE_ACCESS_WRITE:
+         mode_str = "wb";
+
+         flags    = O_WRONLY | O_CREAT | O_TRUNC;
+#if !defined(ORBIS)
+#if defined(PS2)
+         flags   |= FIO_S_IRUSR | FIO_S_IWUSR;
+#elif !defined(_WIN32)
+         flags   |= S_IRUSR | S_IWUSR;
+#else
+         flags   |= O_BINARY;
+#endif
+#endif
+         break;
+
+      case RETRO_VFS_FILE_ACCESS_READ_WRITE:
+         mode_str = "w+b";
+         flags    = O_RDWR | O_CREAT | O_TRUNC;
+#if !defined(ORBIS)
+#if defined(PS2)
+         flags   |= FIO_S_IRUSR | FIO_S_IWUSR;
+#elif !defined(_WIN32)
+         flags   |= S_IRUSR | S_IWUSR;
+#else
+         flags   |= O_BINARY;
+#endif
+#endif
+         break;
+
+      case RETRO_VFS_FILE_ACCESS_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING:
+      case RETRO_VFS_FILE_ACCESS_READ_WRITE | RETRO_VFS_FILE_ACCESS_UPDATE_EXISTING:
+         mode_str = "r+b";
+
+         flags    = O_RDWR;
+#if !defined(ORBIS)
+#if defined(PS2)
+         flags   |= FIO_S_IRUSR | FIO_S_IWUSR;
+#elif !defined(_WIN32)
+         flags   |= S_IRUSR | S_IWUSR;
+#else
+         flags   |= O_BINARY;
+#endif
+#endif
+         break;
+
+      default:
+         goto error;
+   }
+
+   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
+   {
+#ifdef ORBIS
+      int fd = orbisOpen(path, flags, 0644);
+      if (fd < 0)
+      {
+         stream->fd = -1;
+         goto error;
+      }
+      stream->fd = fd;
+#else
+      FILE *fp;
+#ifdef HAVE_CDROM
+      if (stream->scheme == VFS_SCHEME_CDROM)
+      {
+         retro_vfs_file_open_cdrom(stream, path, mode, hints);
+#if defined(_WIN32) && !defined(_XBOX)
+         if (!stream->fh)
+            goto error;
+#else
+         if (!stream->fp)
+            goto error;
+#endif
+      }
+      else
+#endif
+      {
+         fp = (FILE*)fopen_utf8(path, mode_str);
+
+         if (!fp)
+            goto error;
+
+         stream->fp  = fp;
+      }
+      /* Regarding setvbuf:
+       *
+       * https://www.freebsd.org/cgi/man.cgi?query=setvbuf&apropos=0&sektion=0&manpath=FreeBSD+11.1-RELEASE&arch=default&format=html
+       *
+       * If the size argument is not zero but buf is NULL, a buffer of the given size will be allocated immediately, and
+       * released on close. This is an extension to ANSI C.
+       *
+       * Since C89 does not support specifying a null buffer with a non-zero size, we create and track our own buffer for it.
+       */
+      /* TODO: this is only useful for a few platforms, find which and add ifdef */
+#if !defined(PS2) && !defined(PSP)
+      if (stream->scheme != VFS_SCHEME_CDROM)
+      {
+         stream->buf = (char*)calloc(1, 0x4000);
+         if (stream->fp)
+            setvbuf(stream->fp, stream->buf, _IOFBF, 0x4000);
+      }
+#endif
+#endif
+   }
+   else
+   {
+#if defined(_WIN32) && !defined(_XBOX)
+#if defined(LEGACY_WIN32)
+      char *path_local    = utf8_to_local_string_alloc(path);
+      stream->fd          = open(path_local, flags, 0);
+      if (path_local)
+         free(path_local);
+#else
+      wchar_t * path_wide = utf8_to_utf16_string_alloc(path);
+      stream->fd          = _wopen(path_wide, flags, 0);
+      if (path_wide)
+         free(path_wide);
+#endif
+#else
+      stream->fd          = open(path, flags, 0);
+#endif
+
+      if (stream->fd == -1)
+         goto error;
+
+#ifdef HAVE_MMAP
+      if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
+      {
+         stream->mappos  = 0;
+         stream->mapped  = NULL;
+         stream->mapsize = retro_vfs_file_seek_internal(stream, 0, SEEK_END);
+
+         if (stream->mapsize == (uint64_t)-1)
+            goto error;
+
+         retro_vfs_file_seek_internal(stream, 0, SEEK_SET);
+
+         stream->mapped = (uint8_t*)mmap((void*)0,
+               stream->mapsize, PROT_READ,  MAP_SHARED, stream->fd, 0);
+
+         if (stream->mapped == MAP_FAILED)
+            stream->hints &= ~RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS;
+      }
+#endif
+   }
+#ifdef ORBIS
+   stream->size = orbisLseek(stream->fd, 0, SEEK_END);
+   orbisLseek(stream->fd, 0, SEEK_SET);
+#else
+#ifdef HAVE_CDROM
+   if (stream->scheme == VFS_SCHEME_CDROM)
+   {
+      retro_vfs_file_seek_cdrom(stream, 0, SEEK_SET);
+      retro_vfs_file_seek_cdrom(stream, 0, SEEK_END);
+
+      stream->size = retro_vfs_file_tell_impl(stream);
+
+      retro_vfs_file_seek_cdrom(stream, 0, SEEK_SET);
+   }
+   else
+#endif
+   {
+      retro_vfs_file_seek_internal(stream, 0, SEEK_SET);
+      retro_vfs_file_seek_internal(stream, 0, SEEK_END);
+
+      stream->size = retro_vfs_file_tell_impl(stream);
+
+      retro_vfs_file_seek_internal(stream, 0, SEEK_SET);
+   }
+#endif
+   return stream;
+
+error:
+   retro_vfs_file_close_impl(stream);
+   return NULL;
+}
+
+int retro_vfs_file_close_impl(libretro_vfs_implementation_file *stream)
+{
+   if (!stream)
+      return -1;
+
+#ifdef HAVE_CDROM
+   if (stream->scheme == VFS_SCHEME_CDROM)
+   {
+      retro_vfs_file_close_cdrom(stream);
+      goto end;
+   }
+#endif
+
+   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
+   {
+      if (stream->fp)
+      {
+         fclose(stream->fp);
+      }
+   }
+   else
+   {
+#ifdef HAVE_MMAP
+      if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
+         munmap(stream->mapped, stream->mapsize);
+#endif
+   }
+
+   if (stream->fd > 0)
+   {
+#ifdef ORBIS
+      orbisClose(stream->fd);
+      stream->fd = -1;
+#else
+      close(stream->fd);
+#endif
+   }
+#ifdef HAVE_CDROM
+end:
+   if (stream->cdrom.cue_buf)
+      free(stream->cdrom.cue_buf);
+#endif
+   if (stream->buf)
+      free(stream->buf);
+
+   if (stream->orig_path)
+      free(stream->orig_path);
+
+   free(stream);
+
+   return 0;
+}
+
+int retro_vfs_file_error_impl(libretro_vfs_implementation_file *stream)
+{
+#ifdef HAVE_CDROM
+   if (stream->scheme == VFS_SCHEME_CDROM)
+      return retro_vfs_file_error_cdrom(stream);
+#endif
+#ifdef ORBIS
+   /* TODO/FIXME - implement this? */
+   return 0;
+#else
+   return ferror(stream->fp);
+#endif
+}
+
+int64_t retro_vfs_file_size_impl(libretro_vfs_implementation_file *stream)
+{
+   if (stream)
+      return stream->size;
+   return 0;
+}
+
+int64_t retro_vfs_file_truncate_impl(libretro_vfs_implementation_file *stream, int64_t length)
+{
+   if (!stream)
+      return -1;
+
+#ifdef _WIN32
+   if (_chsize(_fileno(stream->fp), length) != 0)
+      return -1;
+#elif !defined(VITA) && !defined(PSP) && !defined(PS2) && !defined(ORBIS) && (!defined(SWITCH) || defined(HAVE_LIBNX))
+   if (ftruncate(fileno(stream->fp), length) != 0)
+      return -1;
+#endif
+
+   return 0;
+}
+
+int64_t retro_vfs_file_tell_impl(libretro_vfs_implementation_file *stream)
+{
+   if (!stream)
+      return -1;
+
+   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
+   {
+#ifdef HAVE_CDROM
+      if (stream->scheme == VFS_SCHEME_CDROM)
+         return retro_vfs_file_tell_cdrom(stream);
+#endif
+#ifdef ORBIS
+      {
+         int64_t ret = orbisLseek(stream->fd, 0, SEEK_CUR);
+         if (ret < 0)
+            return -1;
+         return ret;
+      }
+#else
+      /* VC2005 and up have a special 64-bit ftell */
+#ifdef ATLEAST_VC2005
+      return _ftelli64(stream->fp);
+#else
+      return ftell(stream->fp);
+#endif
+#endif
+   }
+#ifdef HAVE_MMAP
+   /* Need to check stream->mapped because this function
+    * is called in filestream_open() */
+   if (stream->mapped && stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
+      return stream->mappos;
+#endif
+   if (lseek(stream->fd, 0, SEEK_CUR) < 0)
+      return -1;
+
+   return 0;
+}
+
+int64_t retro_vfs_file_seek_impl(libretro_vfs_implementation_file *stream,
+      int64_t offset, int seek_position)
+{
+   int whence = -1;
+   switch (seek_position)
+   {
+      case RETRO_VFS_SEEK_POSITION_START:
+         whence = SEEK_SET;
+         break;
+      case RETRO_VFS_SEEK_POSITION_CURRENT:
+         whence = SEEK_CUR;
+         break;
+      case RETRO_VFS_SEEK_POSITION_END:
+         whence = SEEK_END;
+         break;
+   }
+
+   return retro_vfs_file_seek_internal(stream, offset, whence);
+}
+
+int64_t retro_vfs_file_read_impl(libretro_vfs_implementation_file *stream,
+      void *s, uint64_t len)
+{
+   if (!stream || !s)
+      return -1;
+
+   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
+   {
+#ifdef HAVE_CDROM
+      if (stream->scheme == VFS_SCHEME_CDROM)
+         return retro_vfs_file_read_cdrom(stream, s, len);
+#endif
+#ifdef ORBIS
+      if (orbisRead(stream->fd, s, (size_t)len) < 0)
+         return -1;
+      return 0;
+#else
+      return fread(s, 1, (size_t)len, stream->fp);
+#endif
+   }
+#ifdef HAVE_MMAP
+   if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
+   {
+      if (stream->mappos > stream->mapsize)
+         return -1;
+
+      if (stream->mappos + len > stream->mapsize)
+         len = stream->mapsize - stream->mappos;
+
+      memcpy(s, &stream->mapped[stream->mappos], len);
+      stream->mappos += len;
+
+      return len;
+   }
+#endif
+
+   return read(stream->fd, s, (size_t)len);
+}
+
+int64_t retro_vfs_file_write_impl(libretro_vfs_implementation_file *stream, const void *s, uint64_t len)
+{
+   if (!stream)
+      return -1;
+
+   if ((stream->hints & RFILE_HINT_UNBUFFERED) == 0)
+   {
+#ifdef ORBIS
+      if (orbisWrite(stream->fd, s, (size_t)len) < 0)
+         return -1;
+      return 0;
+#else
+      return fwrite(s, 1, (size_t)len, stream->fp);
+#endif
+   }
+
+#ifdef HAVE_MMAP
+   if (stream->hints & RETRO_VFS_FILE_ACCESS_HINT_FREQUENT_ACCESS)
+      return -1;
+#endif
+   return write(stream->fd, s, (size_t)len);
+}
+
+int retro_vfs_file_flush_impl(libretro_vfs_implementation_file *stream)
+{
+   if (!stream)
+      return -1;
+#ifdef ORBIS
+   return 0;
+#else
+   return fflush(stream->fp) == 0 ? 0 : -1;
+#endif
+}
+
+int retro_vfs_file_remove_impl(const char *path)
+{
+#if defined(_WIN32) && !defined(_XBOX)
+   /* Win32 (no Xbox) */
+
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
+   char *path_local    = NULL;
+#else
+   wchar_t *path_wide  = NULL;
+#endif
+   if (!path || !*path)
+      return -1;
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
+   path_local = utf8_to_local_string_alloc(path);
+
+   if (path_local)
+   {
+      int ret = remove(path_local);
+      free(path_local);
+
+      if (ret == 0)
+         return 0;
+   }
+#else
+   path_wide = utf8_to_utf16_string_alloc(path);
+
+   if (path_wide)
+   {
+      int ret = _wremove(path_wide);
+      free(path_wide);
+
+      if (ret == 0)
+         return 0;
+   }
+#endif
+   return -1;
+#elif defined(ORBIS)
+   /* Orbis
+    * TODO/FIXME - stub for now */
+   return 0;
+#else
+   if (remove(path) == 0)
+      return 0;
+   return -1;
+#endif
+}
+
+int retro_vfs_file_rename_impl(const char *old_path, const char *new_path)
+{
+#if defined(_WIN32) && !defined(_XBOX)
+   /* Win32 (no Xbox) */
+   int ret                 = -1;
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
+   char *old_path_local    = NULL;
+#else
+   wchar_t *old_path_wide  = NULL;
+#endif
+
+   if (!old_path || !*old_path || !new_path || !*new_path)
+      return -1;
+
+#if defined(_WIN32_WINNT) && _WIN32_WINNT < 0x0500
+   old_path_local = utf8_to_local_string_alloc(old_path);
+
+   if (old_path_local)
+   {
+      char *new_path_local = utf8_to_local_string_alloc(new_path);
+
+      if (new_path_local)
+      {
+         if (rename(old_path_local, new_path_local) == 0)
+            ret = 0;
+         free(new_path_local);
+      }
+
+      free(old_path_local);
+   }
+#else
+   old_path_wide = utf8_to_utf16_string_alloc(old_path);
+
+   if (old_path_wide)
+   {
+      wchar_t *new_path_wide = utf8_to_utf16_string_alloc(new_path);
+
+      if (new_path_wide)
+      {
+         if (_wrename(old_path_wide, new_path_wide) == 0)
+            ret = 0;
+         free(new_path_wide);
+      }
+
+      free(old_path_wide);
+   }
+#endif
+   return ret;
+
+#elif defined(ORBIS)
+   /* Orbis */
+   /* TODO/FIXME - Stub for now */
+   if (!old_path || !*old_path || !new_path || !*new_path)
+      return -1;
+   return 0;
+
+#else
+   /* Every other platform */
+   if (!old_path || !*old_path || !new_path || !*new_path)
+      return -1;
+   return rename(old_path, new_path) == 0 ? 0 : -1;
+#endif
+}
+
+const char *retro_vfs_file_get_path_impl(
+      libretro_vfs_implementation_file *stream)
+{
+   /* should never happen, do something noisy so caller can be fixed */
+   if (!stream)
+      abort();
+   return stream->orig_path;
+}
+
+int retro_vfs_stat_impl(const char *path, int32_t *size)
+{
+#if defined(VITA) || defined(PSP)
+   /* Vita / PSP */
+   SceIoStat buf;
+   int stat_ret;
+   bool is_dir               = false;
+   bool is_character_special = false;
+   char *tmp                 = NULL;
+   size_t len                = 0;
+
+   if (!path || !*path)
+      return 0;
+
+   tmp                       = strdup(path);
+   len                       = strlen(tmp);
+   if (tmp[len-1] == '/')
+      tmp[len-1] = '\0';
+
+   stat_ret = sceIoGetstat(tmp, &buf);
+   free(tmp);
+   if (stat_ret < 0)
+      return 0;
+
+   if (size)
+      *size = (int32_t)buf.st_size;
+
+   is_dir = FIO_S_ISDIR(buf.st_mode);
+
+   return RETRO_VFS_STAT_IS_VALID | (is_dir ? RETRO_VFS_STAT_IS_DIRECTORY : 0) | (is_character_special ? RETRO_VFS_STAT_IS_CHARACTER_SPECIAL : 0);
+
+#elif defined(ORBIS)
+   /* Orbis */
+   bool is_dir, is_character_special;
+   int dir_ret;
+
+   if (!path || !*path)
+      return 0;
+
+   if (size)
+      *size = (int32_t)buf.st_size;
+
+   dir_ret = orbisDopen(path);
+   is_dir  = dir_ret > 0;
+   orbisDclose(dir_ret);
+
+   is_character_special = S_ISCHR(buf.st_mode);
+
+   return RETRO_VFS_STAT_IS_VALID | (is_dir ? RETRO_VFS_STAT_IS_DIRECTORY : 0) | (is_character_special ? RETRO_VFS_STAT_IS_CHARACTER_SPECIAL : 0);
+
+#elif defined(PS2)
+   /* PS2 */
+   iox_stat_t buf;
+   bool is_dir;
+   bool is_character_special = false;
+   char *tmp                 = NULL;
+   size_t len                = 0;
+
+   if (!path || !*path)
+      return 0;
+
+   tmp        = strdup(path);
+   len        = strlen(tmp);
+   if (tmp[len-1] == '/')
+      tmp[len-1] = '\0';
+
+   fileXioGetStat(tmp, &buf);
+   free(tmp);
+
+   if (size)
+      *size = (int32_t)buf.size;
+
+   if (!buf.mode)
+   {
+      /* if fileXioGetStat fails */
+      int dir_ret = fileXioDopen(path);
+      is_dir      =  dir_ret > 0;
+      if (is_dir) {
+         fileXioDclose(dir_ret);
+      }
+   }
+   else
+      is_dir = FIO_S_ISDIR(buf.mode);
+
+   return RETRO_VFS_STAT_IS_VALID | (is_dir ? RETRO_VFS_STAT_IS_DIRECTORY : 0) | (is_character_special ? RETRO_VFS_STAT_IS_CHARACTER_SPECIAL : 0);
+
+#elif defined(__CELLOS_LV2__)
+   /* CellOS Lv2 */
+   bool is_dir;
+   bool is_character_special = false;
+   CellFsStat buf;
+
+   if (!path || !*path)
+      return 0;
+   if (cellFsStat(path, &buf) < 0)
+      return 0;
+
+   if (size)
+      *size = (int32_t)buf.st_size;
+
+   is_dir = ((buf.st_mode & S_IFMT) == S_IFDIR);
+
+   return RETRO_VFS_STAT_IS_VALID | (is_dir ? RETRO_VFS_STAT_IS_DIRECTORY : 0) | (is_character_special ? RETRO_VFS_STAT_IS_CHARACTER_SPECIAL : 0);
+
+#elif defined(_WIN32)
+   /* Windows */
+   bool is_dir;
+   DWORD file_info;
+   struct _stat buf;
+   bool is_character_special = false;
+#if defined(LEGACY_WIN32)
+   char *path_local          = NULL;
+#else
+   wchar_t *path_wide        = NULL;
+#endif
+
+   if (!path || !*path)
+      return 0;
+
+#if defined(LEGACY_WIN32)
+   path_local = utf8_to_local_string_alloc(path);
+   file_info  = GetFileAttributes(path_local);
+
+   if (!string_is_empty(path_local))
+      _stat(path_local, &buf);
+
+   if (path_local)
+      free(path_local);
+#else
+   path_wide = utf8_to_utf16_string_alloc(path);
+   file_info = GetFileAttributesW(path_wide);
+
+   _wstat(path_wide, &buf);
+
+   if (path_wide)
+      free(path_wide);
+#endif
+
+   if (file_info == INVALID_FILE_ATTRIBUTES)
+      return 0;
+
+   if (size)
+      *size = (int32_t)buf.st_size;
+
+   is_dir = (file_info & FILE_ATTRIBUTE_DIRECTORY);
+
+   return RETRO_VFS_STAT_IS_VALID | (is_dir ? RETRO_VFS_STAT_IS_DIRECTORY : 0) | (is_character_special ? RETRO_VFS_STAT_IS_CHARACTER_SPECIAL : 0);
+
+#else
+   /* Every other platform */
+   bool is_dir, is_character_special;
+   struct stat buf;
+
+   if (!path || !*path)
+      return 0;
+   if (stat(path, &buf) < 0)
+      return 0;
+
+   if (size)
+      *size             = (int32_t)buf.st_size;
+
+   is_dir               = S_ISDIR(buf.st_mode);
+   is_character_special = S_ISCHR(buf.st_mode);
+
+   return RETRO_VFS_STAT_IS_VALID | (is_dir ? RETRO_VFS_STAT_IS_DIRECTORY : 0) | (is_character_special ? RETRO_VFS_STAT_IS_CHARACTER_SPECIAL : 0);
+#endif
+}
+
+#if defined(VITA)
+#define path_mkdir_error(ret) (((ret) == SCE_ERROR_ERRNO_EEXIST))
+#elif defined(PSP) || defined(PS2) || defined(_3DS) || defined(WIIU) || defined(SWITCH) || defined(ORBIS)
+#define path_mkdir_error(ret) ((ret) == -1)
+#else
+#define path_mkdir_error(ret) ((ret) < 0 && errno == EEXIST)
+#endif
+
+int retro_vfs_mkdir_impl(const char *dir)
+{
+#if defined(_WIN32)
+#ifdef LEGACY_WIN32
+   int ret       = _mkdir(dir);
+#else
+   wchar_t *dirW = utf8_to_utf16_string_alloc(dir);
+   int       ret = -1;
+
+   if (dirW)
+   {
+      ret = _wmkdir(dirW);
+      free(dirW);
+   }
+#endif
+#elif defined(IOS)
+   int ret = mkdir(dir, 0755);
+#elif defined(VITA) || defined(PSP)
+   int ret = sceIoMkdir(dir, 0777);
+#elif defined(PS2)
+   int ret = fileXioMkdir(dir, 0777);
+#elif defined(ORBIS)
+   int ret = orbisMkdir(dir, 0755);
+#elif defined(__QNX__)
+   int ret = mkdir(dir, 0777);
+#else
+   int ret = mkdir(dir, 0750);
+#endif
+
+   if (path_mkdir_error(ret))
+      return -2;
+   return ret < 0 ? -1 : 0;
+}
+
+#ifdef VFS_FRONTEND
+struct retro_vfs_dir_handle
+#else
+struct libretro_vfs_implementation_dir
+#endif
+{
+   char* orig_path;
+#if defined(_WIN32)
+#if defined(LEGACY_WIN32)
+   WIN32_FIND_DATA entry;
+#else
+   WIN32_FIND_DATAW entry;
+#endif
+   HANDLE directory;
+   bool next;
+   char path[PATH_MAX_LENGTH];
+#elif defined(VITA) || defined(PSP)
+   SceUID directory;
+   SceIoDirent entry;
+#elif defined(PS2)
+   int directory;
+   iox_dirent_t entry;
+#elif defined(__CELLOS_LV2__)
+   CellFsErrno error;
+   int directory;
+   CellFsDirent entry;
+#elif defined(ORBIS)
+   int directory;
+   struct dirent entry;
+#else
+   DIR *directory;
+   const struct dirent *entry;
+#endif
+};
+
+static bool dirent_check_error(libretro_vfs_implementation_dir *rdir)
+{
+#if defined(_WIN32)
+   return (rdir->directory == INVALID_HANDLE_VALUE);
+#elif defined(VITA) || defined(PSP) || defined(PS2) || defined(ORBIS)
+   return (rdir->directory < 0);
+#elif defined(__CELLOS_LV2__)
+   return (rdir->error != CELL_FS_SUCCEEDED);
+#else
+   return !(rdir->directory);
+#endif
+}
+
+libretro_vfs_implementation_dir *retro_vfs_opendir_impl(
+      const char *name, bool include_hidden)
+{
+#if defined(_WIN32)
+   unsigned path_len;
+   char path_buf[1024];
+   size_t copied      = 0;
+#if defined(LEGACY_WIN32)
+   char *path_local   = NULL;
+#else
+   wchar_t *path_wide = NULL;
+#endif
+#endif
+   libretro_vfs_implementation_dir *rdir;
+
+   /*Reject null or empty string paths*/
+   if (!name || (*name == 0))
+      return NULL;
+
+   /*Allocate RDIR struct. Tidied later with retro_closedir*/
+   rdir = (libretro_vfs_implementation_dir*)calloc(1, sizeof(*rdir));
+   if (!rdir)
+      return NULL;
+
+   rdir->orig_path       = strdup(name);
+
+#if defined(_WIN32)
+   path_buf[0]           = '\0';
+   path_len              = strlen(name);
+
+   copied                = strlcpy(path_buf, name, sizeof(path_buf));
+
+   /* Non-NT platforms don't like extra slashes in the path */
+   if (name[path_len - 1] != '\\')
+      path_buf[copied++]   = '\\';
+
+   path_buf[copied]        = '*';
+   path_buf[copied+1]      = '\0';
+
+#if defined(LEGACY_WIN32)
+   path_local              = utf8_to_local_string_alloc(path_buf);
+   rdir->directory         = FindFirstFile(path_local, &rdir->entry);
+
+   if (path_local)
+      free(path_local);
+#else
+   path_wide               = utf8_to_utf16_string_alloc(path_buf);
+   rdir->directory         = FindFirstFileW(path_wide, &rdir->entry);
+
+   if (path_wide)
+      free(path_wide);
+#endif
+
+#elif defined(VITA) || defined(PSP)
+   rdir->directory       = sceIoDopen(name);
+#elif defined(PS2)
+   rdir->directory       = ps2fileXioDopen(name);
+#elif defined(_3DS)
+   rdir->directory       = !string_is_empty(name) ? opendir(name) : NULL;
+   rdir->entry           = NULL;
+#elif defined(__CELLOS_LV2__)
+   rdir->error           = cellFsOpendir(name, &rdir->directory);
+#elif defined(ORBIS)
+   rdir->directory       = orbisDopen(name);
+#else
+   rdir->directory       = opendir(name);
+   rdir->entry           = NULL;
+#endif
+
+#ifdef _WIN32
+   if (include_hidden)
+      rdir->entry.dwFileAttributes |= FILE_ATTRIBUTE_HIDDEN;
+   else
+      rdir->entry.dwFileAttributes &= ~FILE_ATTRIBUTE_HIDDEN;
+#endif
+
+   if (rdir->directory && !dirent_check_error(rdir))
+      return rdir;
+
+   retro_vfs_closedir_impl(rdir);
+   return NULL;
+}
+
+bool retro_vfs_readdir_impl(libretro_vfs_implementation_dir *rdir)
+{
+#if defined(_WIN32)
+   if (rdir->next)
+#if defined(LEGACY_WIN32)
+      return (FindNextFile(rdir->directory, &rdir->entry) != 0);
+#else
+      return (FindNextFileW(rdir->directory, &rdir->entry) != 0);
+#endif
+
+   rdir->next = true;
+   return (rdir->directory != INVALID_HANDLE_VALUE);
+#elif defined(VITA) || defined(PSP)
+   return (sceIoDread(rdir->directory, &rdir->entry) > 0);
+#elif defined(PS2)
+   iox_dirent_t record;
+   int ret = ps2fileXioDread(rdir->directory, &record);
+   rdir->entry = record;
+   return ( ret > 0);
+#elif defined(__CELLOS_LV2__)
+   uint64_t nread;
+   rdir->error = cellFsReaddir(rdir->directory, &rdir->entry, &nread);
+   return (nread != 0);
+#elif defined(ORBIS)
+   return (orbisDread(rdir->directory, &rdir->entry) > 0);
+#else
+   return ((rdir->entry = readdir(rdir->directory)) != NULL);
+#endif
+}
+
+const char *retro_vfs_dirent_get_name_impl(libretro_vfs_implementation_dir *rdir)
+{
+#if defined(_WIN32)
+#if defined(LEGACY_WIN32)
+   {
+      char *name_local = local_to_utf8_string_alloc(rdir->entry.cFileName);
+      memset(rdir->entry.cFileName, 0, sizeof(rdir->entry.cFileName));
+      strlcpy(rdir->entry.cFileName, name_local, sizeof(rdir->entry.cFileName));
+
+      if (name_local)
+         free(name_local);
+   }
+#else
+   {
+      char *name       = utf16_to_utf8_string_alloc(rdir->entry.cFileName);
+      memset(rdir->entry.cFileName, 0, sizeof(rdir->entry.cFileName));
+      strlcpy((char*)rdir->entry.cFileName, name, sizeof(rdir->entry.cFileName));
+
+      if (name)
+         free(name);
+   }
+#endif
+   return (char*)rdir->entry.cFileName;
+#elif defined(VITA) || defined(PSP) || defined(__CELLOS_LV2__) || defined(ORBIS)
+   return rdir->entry.d_name;
+#elif defined(PS2)
+   return rdir->entry.name;
+#else
+   if (!rdir || !rdir->entry)
+      return NULL;
+   return rdir->entry->d_name;
+#endif
+}
+
+bool retro_vfs_dirent_is_dir_impl(libretro_vfs_implementation_dir *rdir)
+{
+#if defined(_WIN32)
+   const WIN32_FIND_DATA *entry = (const WIN32_FIND_DATA*)&rdir->entry;
+   return entry->dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY;
+#elif defined(PSP) || defined(VITA)
+   const SceIoDirent *entry = (const SceIoDirent*)&rdir->entry;
+#if defined(PSP)
+   return (entry->d_stat.st_attr & FIO_SO_IFDIR) == FIO_SO_IFDIR;
+#elif defined(VITA)
+   return SCE_S_ISDIR(entry->d_stat.st_mode);
+#endif
+#elif defined(PS2)
+   const iox_dirent_t *entry = (const iox_dirent_t*)&rdir->entry;
+   return FIO_S_ISDIR(entry->stat.mode);
+#elif defined(__CELLOS_LV2__)
+   CellFsDirent *entry = (CellFsDirent*)&rdir->entry;
+   return (entry->d_type == CELL_FS_TYPE_DIRECTORY);
+#elif defined(ORBIS)
+   const struct dirent *entry = &rdir->entry;
+   if (entry->d_type == DT_DIR)
+      return true;
+   if (!(entry->d_type == DT_UNKNOWN || entry->d_type == DT_LNK))
+      return false;
+#else
+   struct stat buf;
+   char path[PATH_MAX_LENGTH];
+#if defined(DT_DIR)
+   const struct dirent *entry = (const struct dirent*)rdir->entry;
+   if (entry->d_type == DT_DIR)
+      return true;
+   /* This can happen on certain file systems. */
+   if (!(entry->d_type == DT_UNKNOWN || entry->d_type == DT_LNK))
+      return false;
+#endif
+   /* dirent struct doesn't have d_type, do it the slow way ... */
+   path[0] = '\0';
+   fill_pathname_join(path, rdir->orig_path, retro_vfs_dirent_get_name_impl(rdir), sizeof(path));
+   if (stat(path, &buf) < 0)
+      return false;
+   return S_ISDIR(buf.st_mode);
+#endif
+}
+
+int retro_vfs_closedir_impl(libretro_vfs_implementation_dir *rdir)
+{
+   if (!rdir)
+      return -1;
+
+#if defined(_WIN32)
+   if (rdir->directory != INVALID_HANDLE_VALUE)
+      FindClose(rdir->directory);
+#elif defined(VITA) || defined(PSP)
+   sceIoDclose(rdir->directory);
+#elif defined(PS2)
+   ps2fileXioDclose(rdir->directory);
+#elif defined(__CELLOS_LV2__)
+   rdir->error = cellFsClosedir(rdir->directory);
+#elif defined(ORBIS)
+   orbisDclose(rdir->directory);
+#else
+   if (rdir->directory)
+      closedir(rdir->directory);
+#endif
+
+   if (rdir->orig_path)
+      free(rdir->orig_path);
+   free(rdir);
+   return 0;
+}

+ 452 - 47
platform/libretro/libretro.c

@@ -15,8 +15,12 @@
 #include <string.h>
 #ifndef _WIN32
 #ifndef NO_MMAP
+#ifdef __SWITCH__
+#include "../switch/mman.h"
+#else
 #include <sys/mman.h>
 #endif
+#endif
 #else
 #include <io.h>
 #include <windows.h>
@@ -27,6 +31,15 @@
 #include <libkern/OSCacheControl.h>
 #endif
 
+#ifdef USE_LIBRETRO_VFS
+#include "file_stream_transforms.h"
+#endif
+
+#if defined(RENDER_GSKIT_PS2)
+#include "libretro-common/include/libretro_gskit_ps2.h"
+#include "../ps2/asm.h"
+#endif
+
 #ifdef _3DS
 #include "3ds/3ds_utils.h"
 #define MEMOP_MAP     4
@@ -52,12 +65,14 @@ int _newlib_vm_size_user = 1 << TARGET_SIZE_2;
 
 #endif
 
+#include "libretro_core_options.h"
+
 #include <pico/pico_int.h>
 #include <pico/state.h>
 #include <pico/patch.h>
 #include "../common/input_pico.h"
 #include "../common/version.h"
-#include "libretro.h"
+#include <libretro.h>
 
 static retro_log_printf_t log_cb;
 static retro_video_refresh_t video_cb;
@@ -66,20 +81,38 @@ static retro_input_state_t input_state_cb;
 static retro_environment_t environ_cb;
 static retro_audio_sample_batch_t audio_batch_cb;
 
+#if defined(RENDER_GSKIT_PS2)
+#define VOUT_MAX_WIDTH 328
+#else
 #define VOUT_MAX_WIDTH 320
+#define VOUT_32BIT_WIDTH 256
+#endif
 #define VOUT_MAX_HEIGHT 240
+#define INITIAL_SND_RATE 44100
 
 static const float VOUT_PAR = 0.0;
 static const float VOUT_4_3 = (224.0f * (4.0f / 3.0f));
 static const float VOUT_CRT = (224.0f * 1.29911f);
 
-bool show_overscan = false;
+static bool show_overscan = false;
+static bool old_show_overscan = false;
+
+/* Required to allow on the fly changes to 'show overscan' */
+static int vm_current_start_line = -1;
+static int vm_current_line_count = -1;
+static int vm_current_is_32cols = -1;
 
 static void *vout_buf;
 static int vout_width, vout_height, vout_offset;
 static float user_vout_width = 0.0;
 
-static short ALIGNED(4) sndBuffer[2*44100/50];
+#if defined(RENDER_GSKIT_PS2)
+RETRO_HW_RENDER_INTEFACE_GSKIT_PS2 *ps2 = NULL;
+static void *retro_palette;
+static struct retro_hw_ps2_insets padding;
+#endif
+
+static short ALIGNED(4) sndBuffer[2*INITIAL_SND_RATE/50];
 
 static void snd_write(int len);
 
@@ -91,6 +124,71 @@ char **g_argv;
 #define SLASH '/'
 #endif
 
+/* Frameskipping Support */
+
+static unsigned frameskip_type             = 0;
+static unsigned frameskip_threshold        = 0;
+static uint16_t frameskip_counter          = 0;
+
+static bool retro_audio_buff_active        = false;
+static unsigned retro_audio_buff_occupancy = 0;
+static bool retro_audio_buff_underrun      = false;
+/* Maximum number of consecutive frames that
+ * can be skipped */
+#define FRAMESKIP_MAX 60
+
+static unsigned audio_latency              = 0;
+static bool update_audio_latency           = false;
+
+static void retro_audio_buff_status_cb(
+      bool active, unsigned occupancy, bool underrun_likely)
+{
+   retro_audio_buff_active    = active;
+   retro_audio_buff_occupancy = occupancy;
+   retro_audio_buff_underrun  = underrun_likely;
+}
+
+static void init_frameskip(void)
+{
+   if (frameskip_type > 0)
+   {
+      struct retro_audio_buffer_status_callback buf_status_cb;
+
+      buf_status_cb.callback = retro_audio_buff_status_cb;
+      if (!environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK,
+            &buf_status_cb))
+      {
+         if (log_cb)
+            log_cb(RETRO_LOG_WARN, "Frameskip disabled - frontend does not support audio buffer status monitoring.\n");
+
+         retro_audio_buff_active    = false;
+         retro_audio_buff_occupancy = 0;
+         retro_audio_buff_underrun  = false;
+         audio_latency              = 0;
+      }
+      else
+      {
+         /* Frameskip is enabled - increase frontend
+          * audio latency to minimise potential
+          * buffer underruns */
+         float frame_time_msec = 1000.0f / (Pico.m.pal ? 50.0f : 60.0f);
+
+         /* Set latency to 6x current frame time... */
+         audio_latency = (unsigned)((6.0f * frame_time_msec) + 0.5f);
+
+         /* ...then round up to nearest multiple of 32 */
+         audio_latency = (audio_latency + 0x1F) & ~0x1F;
+      }
+   }
+   else
+   {
+      environ_cb(RETRO_ENVIRONMENT_SET_AUDIO_BUFFER_STATUS_CALLBACK, NULL);
+      audio_latency = 0;
+   }
+
+   update_audio_latency = true;
+}
+
 /* functions called by the core */
 
 void cache_flush_d_inval_i(void *start, void *end)
@@ -397,7 +495,7 @@ void *plat_mmap(unsigned long addr, size_t size, int need_exec, int is_fixed)
 
 void *plat_mremap(void *ptr, size_t oldsize, size_t newsize)
 {
-#ifdef __linux__
+#if defined(__linux__) && !defined(__SWITCH__)
    void *ret = mremap(ptr, oldsize, newsize, 0);
    if (ret == MAP_FAILED)
       return NULL;
@@ -486,14 +584,46 @@ void emu_video_mode_change(int start_line, int line_count, int is_32cols)
 {
    struct retro_system_av_info av_info;
 
-   memset(vout_buf, 0, 320 * 240 * 2);
-   vout_width = is_32cols ? 256 : 320;
+   vm_current_start_line = start_line;
+   vm_current_line_count = line_count;
+   vm_current_is_32cols = is_32cols;
+
+#if defined(RENDER_GSKIT_PS2)
+   if (is_32cols) {
+      padding = (struct retro_hw_ps2_insets){start_line, 16.0f, VOUT_MAX_HEIGHT - line_count - start_line, 64.0f};
+   } else {
+      padding = (struct retro_hw_ps2_insets){start_line, 16.0f, VOUT_MAX_HEIGHT - line_count - start_line, 0.0f};
+   }
+
+   vout_width = VOUT_MAX_WIDTH;
+   vout_height = VOUT_MAX_HEIGHT;
+   memset(vout_buf, 0, vout_width * VOUT_MAX_HEIGHT);
+   memset(retro_palette, 0, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
+   PicoDrawSetOutBuf(vout_buf, vout_width);
+#else
+   vout_width = is_32cols ? VOUT_32BIT_WIDTH : VOUT_MAX_WIDTH;
+   memset(vout_buf, 0, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);  
    PicoDrawSetOutBuf(vout_buf, vout_width * 2);
-   if (show_overscan == true) line_count += 16;
-   if (show_overscan == true) start_line -= 8;
 
-   vout_height = line_count;
-   vout_offset = vout_width * start_line;
+   if (show_overscan)
+   {
+      vout_height = line_count + (start_line * 2);
+      vout_offset = 0;
+   }
+   else
+   {
+      vout_height = line_count;
+      /* Note: We multiply by 2 here to account for pitch */
+      vout_offset = vout_width * start_line * 2;
+   }
+
+   /* Redundant sanity check... */
+   vout_height = (vout_height > VOUT_MAX_HEIGHT) ?
+         VOUT_MAX_HEIGHT : vout_height;
+   vout_offset = (vout_offset > vout_width * (VOUT_MAX_HEIGHT - 1) * 2) ?
+         vout_width * (VOUT_MAX_HEIGHT - 1) * 2 : vout_offset;
+
+#endif
 
    // Update the geometry
    retro_get_system_av_info(&av_info);
@@ -521,24 +651,20 @@ void lprintf(const char *fmt, ...)
 /* libretro */
 void retro_set_environment(retro_environment_t cb)
 {
-   static const struct retro_variable vars[] = {
-      { "picodrive_input1",      "Input device 1; 3 button pad|6 button pad|None" },
-      { "picodrive_input2",      "Input device 2; 3 button pad|6 button pad|None" },
-      { "picodrive_sprlim",      "No sprite limit; disabled|enabled" },
-      { "picodrive_ramcart",     "MegaCD RAM cart; disabled|enabled" },
-      { "picodrive_region",      "Region; Auto|Japan NTSC|Japan PAL|US|Europe" },
-      { "picodrive_aspect",      "Core-provided aspect ratio; PAR|4/3|CRT" },
-      { "picodrive_overscan",    "Show Overscan; disabled|enabled" },
-      { "picodrive_overclk68k",  "68k overclock; disabled|+25%|+50%|+75%|+100%|+200%|+400%" },
-#ifdef DRC_SH2
-      { "picodrive_drc", "Dynamic recompilers; enabled|disabled" },
+#ifdef USE_LIBRETRO_VFS
+   struct retro_vfs_interface_info vfs_iface_info;
 #endif
-      { NULL, NULL },
-   };
 
    environ_cb = cb;
 
-   cb(RETRO_ENVIRONMENT_SET_VARIABLES, (void *)vars);
+   libretro_set_core_options(environ_cb);
+
+#ifdef USE_LIBRETRO_VFS
+   vfs_iface_info.required_interface_version = 1;
+   vfs_iface_info.iface = NULL;
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VFS_INTERFACE, &vfs_iface_info))
+      filestream_vfs_init(&vfs_iface_info);
+#endif
 }
 
 void retro_set_video_refresh(retro_video_refresh_t cb) { video_cb = cb; }
@@ -574,7 +700,7 @@ void retro_get_system_av_info(struct retro_system_av_info *info)
 
    memset(info, 0, sizeof(*info));
    info->timing.fps            = Pico.m.pal ? 50 : 60;
-   info->timing.sample_rate    = 44100;
+   info->timing.sample_rate    = PicoIn.sndRate;
    info->geometry.base_width   = vout_width;
    info->geometry.base_height  = vout_height;
    info->geometry.max_width    = vout_width;
@@ -747,8 +873,9 @@ void retro_cheat_set(unsigned index, bool enabled, const char *code)
 	char codeCopy[256];
 	char *buff;
 
-	if (code=='\0') return;
-	strcpy(codeCopy,code);
+	if (*code == '\0')
+      return;
+	strcpy(codeCopy, code);
 	buff = strtok(codeCopy,"+");
 
 	while (buff != NULL)
@@ -976,6 +1103,26 @@ static const char *find_bios(int *region, const char *cd_fname)
    return NULL;
 }
 
+static void set_memory_maps(void)
+{
+   if (PicoIn.AHW & PAHW_MCD)
+   {
+      const size_t SCD_BIT = 1ULL << 31ULL;
+      const uint64_t mem = RETRO_MEMDESC_SYSTEM_RAM;
+      struct retro_memory_map mmaps;
+      struct retro_memory_descriptor descs[] = {
+         { mem, PicoMem.ram,        0,           0xFF0000, 0, 0, 0x10000, "68KRAM" },
+         /* virtual address using SCD_BIT so all 512M of prg_ram can be accessed */
+         /* at address $80020000 */
+         { mem, Pico_mcd->prg_ram,  0, SCD_BIT | 0x020000, 0, 0, 0x80000, "PRGRAM" },
+      };
+
+      mmaps.descriptors = descs;
+      mmaps.num_descriptors = sizeof(descs) / sizeof(descs[0]);
+      environ_cb(RETRO_ENVIRONMENT_SET_MEMORY_MAPS, &mmaps);
+   }
+}
+
 bool retro_load_game(const struct retro_game_info *info)
 {
    enum media_type_e media_type;
@@ -1094,6 +1241,11 @@ bool retro_load_game(const struct retro_game_info *info)
    PicoIn.sndOut = sndBuffer;
    PsndRerate(0);
 
+   /* Setup retro memory maps */
+   set_memory_maps();
+
+   init_frameskip();
+
    return true;
 }
 
@@ -1118,7 +1270,9 @@ void *retro_get_memory_data(unsigned type)
    switch(type)
    {
       case RETRO_MEMORY_SAVE_RAM:
-         if (PicoIn.AHW & PAHW_MCD)
+         /* Note: MCD RAM cart uses Pico.sv.data */
+         if ((PicoIn.AHW & PAHW_MCD) &&
+               !(PicoIn.opt & POPT_EN_MCD_RAMCART))
             data = Pico_mcd->bram;
          else
             data = Pico.sv.data;
@@ -1146,8 +1300,12 @@ size_t retro_get_memory_size(unsigned type)
    {
       case RETRO_MEMORY_SAVE_RAM:
          if (PicoIn.AHW & PAHW_MCD)
-            // bram
-            return 0x2000;
+         {
+            if (PicoIn.opt & POPT_EN_MCD_RAMCART)
+               return 0x12000;
+            else /* bram */
+               return 0x2000;
+         }
 
          if (Pico.m.frame_count == 0)
             return Pico.sv.size;
@@ -1211,11 +1369,13 @@ static enum input_device input_name_to_val(const char *name)
    return PICO_INPUT_PAD_3BTN;
 }
 
-static void update_variables(void)
+static void update_variables(bool first_run)
 {
    struct retro_variable var;
    int OldPicoRegionOverride;
    float old_user_vout_width;
+   unsigned old_frameskip_type;
+   double new_sound_rate;
 
    var.value = NULL;
    var.key = "picodrive_input1";
@@ -1281,21 +1441,32 @@ static void update_variables(void)
          user_vout_width = VOUT_PAR;
    }
 
+   if (user_vout_width != old_user_vout_width)
+   {
+      // Update the geometry
+      struct retro_system_av_info av_info;
+      retro_get_system_av_info(&av_info);
+      environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
+   }
+
+   old_show_overscan = show_overscan;
    var.value = NULL;
    var.key = "picodrive_overscan";
+   show_overscan = false;
    if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
       if (strcmp(var.value, "enabled") == 0)
          show_overscan = true;
-      else
-         show_overscan = false;
    }
 
-   if (user_vout_width != old_user_vout_width)
+   if (show_overscan != old_show_overscan)
    {
-      // Update the geometry
-      struct retro_system_av_info av_info;
-      retro_get_system_av_info(&av_info);
-      environ_cb(RETRO_ENVIRONMENT_SET_GEOMETRY, &av_info);
+      if ((vm_current_start_line != -1) &&
+          (vm_current_line_count != -1) &&
+          (vm_current_is_32cols != -1))
+         emu_video_mode_change(
+               vm_current_start_line,
+               vm_current_line_count,
+               vm_current_is_32cols);
    }
 
    var.value = NULL;
@@ -1320,15 +1491,78 @@ static void update_variables(void)
    if(!ctr_svchack_successful)
       PicoIn.opt &= ~POPT_EN_DRC;
 #endif
+
+   var.value = NULL;
+   var.key = "picodrive_audio_filter";
+   PicoIn.sndFilter = 0;
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
+      if (strcmp(var.value, "low-pass") == 0)
+         PicoIn.sndFilter = 1;
+   }
+
+   var.value = NULL;
+   var.key = "picodrive_lowpass_range";
+   PicoIn.sndFilterRange = (60 * 65536) / 100;
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
+      PicoIn.sndFilterRange = (atoi(var.value) * 65536) / 100;
+   }
+
+   old_frameskip_type = frameskip_type;
+   frameskip_type     = 0;
+   var.key            = "picodrive_frameskip";
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
+      if (strcmp(var.value, "auto") == 0)
+         frameskip_type = 1;
+      else if (strcmp(var.value, "manual") == 0)
+         frameskip_type = 2;
+   }
+
+   frameskip_threshold = 33;
+   var.key             = "picodrive_frameskip_threshold";
+   var.value           = NULL;
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
+      frameskip_threshold = strtol(var.value, NULL, 10);
+
+   var.value = NULL;
+   var.key = "picodrive_renderer";
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
+      if (strcmp(var.value, "fast") == 0)
+         PicoIn.opt |= POPT_ALT_RENDERER;
+      else
+         PicoIn.opt &= ~POPT_ALT_RENDERER;
+   }
+
+   var.value = NULL;
+   var.key = "picodrive_sound_rate";
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value) {
+      new_sound_rate = atoi(var.value);
+      if (new_sound_rate != PicoIn.sndRate) {
+         /* Update the sound rate */
+         PicoIn.sndRate = new_sound_rate;
+         PsndRerate(1);
+         struct retro_system_av_info av_info;
+         retro_get_system_av_info(&av_info);
+         environ_cb(RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO, &av_info);
+      }
+   }
+
+   /* Reinitialise frameskipping, if required */
+   if (((frameskip_type != old_frameskip_type) ||
+        (Pico.rom && PicoIn.regionOverride != OldPicoRegionOverride)) &&
+       !first_run)
+      init_frameskip();
 }
 
 void retro_run(void)
 {
    bool updated = false;
    int pad, i;
+   static void *buff;
+
+   PicoIn.skipFrame = 0;
 
    if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE, &updated) && updated)
-      update_variables();
+      update_variables(false);
 
    input_poll_cb();
 
@@ -1338,10 +1572,154 @@ void retro_run(void)
          if (input_state_cb(pad, RETRO_DEVICE_JOYPAD, 0, i))
             PicoIn.pad[pad] |= retro_pico_map[i];
 
-   PicoPatchApply();
+   if (PicoPatches)
+      PicoPatchApply();
+
+   /* Check whether current frame should
+    * be skipped */
+   if ((frameskip_type > 0) && retro_audio_buff_active) {
+      switch (frameskip_type)
+      {
+         case 1: /* auto */
+            PicoIn.skipFrame = retro_audio_buff_underrun ? 1 : 0;
+            break;
+         case 2: /* manual */
+            PicoIn.skipFrame = (retro_audio_buff_occupancy < frameskip_threshold) ? 1 : 0;
+            break;
+         default:
+            PicoIn.skipFrame = 0;
+            break;
+      }
+
+      if (!PicoIn.skipFrame || (frameskip_counter >= FRAMESKIP_MAX)) {
+         PicoIn.skipFrame  = 0;
+         frameskip_counter = 0;
+      } else
+         frameskip_counter++;
+   }
+
+   /* If frameskip settings have changed, update
+    * frontend audio latency */
+   if (update_audio_latency) {
+      environ_cb(RETRO_ENVIRONMENT_SET_MINIMUM_AUDIO_LATENCY,
+            &audio_latency);
+      update_audio_latency = false;
+   }
+
    PicoFrame();
 
-   video_cb((short *)vout_buf + vout_offset,
+   /* If frame was skipped, call video_cb() with
+    * a NULL buffer and return immediately */
+   if (PicoIn.skipFrame) {
+      video_cb(NULL, vout_width, vout_height, vout_width * 2);
+      return;
+   }
+
+#if defined(RENDER_GSKIT_PS2)
+   buff = (uint32_t *)RETRO_HW_FRAME_BUFFER_VALID;
+
+   if (!ps2) {
+      if (!environ_cb(RETRO_ENVIRONMENT_GET_HW_RENDER_INTERFACE, (void **)&ps2) || !ps2) {
+         printf("Failed to get HW rendering interface!\n");
+         return;
+	   }
+
+      if (ps2->interface_version != RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION) {
+         printf("HW render interface mismatch, expected %u, got %u!\n", 
+                  RETRO_HW_RENDER_INTERFACE_GSKIT_PS2_VERSION, ps2->interface_version);
+         return;
+      }
+
+      ps2->coreTexture->Width = vout_width;
+      ps2->coreTexture->Height = vout_height;
+      ps2->coreTexture->PSM = GS_PSM_T8;
+      ps2->coreTexture->ClutPSM = GS_PSM_CT16;
+      ps2->coreTexture->Filter = GS_FILTER_LINEAR;
+      ps2->coreTexture->Clut = retro_palette;
+   }
+
+   if (Pico.m.dirtyPal) {
+      int i;
+      unsigned short int *pal=(void *)ps2->coreTexture->Clut;
+
+      if (PicoIn.AHW & PAHW_SMS) {
+         // SMS
+         unsigned int *spal=(void *)PicoMem.cram;
+         unsigned int *dpal=(void *)pal;
+         unsigned int t;
+
+         /* cram is always stored as shorts, even though real hardware probably uses bytes */
+         for (i = 0x20/2; i > 0; i--, spal++, dpal++) {
+            t = *spal;
+            t = ((t & 0x00030003)<< 3) | ((t & 0x000c000c)<<6) | ((t & 0x00300030)<<9);
+            t |= t >> 2;
+            t |= (t >> 4) & 0x08610861;
+            *dpal = t;
+         }
+         pal[0xe0] = 0;
+
+
+      } else if (PicoIn.AHW & PAHW_32X) {
+         // MCD+32X
+      } else if (PicoIn.AHW & PAHW_MCD) {
+         // MCD
+      } else {
+         // MD
+         if(Pico.video.reg[0xC]&8){
+            do_pal_convert_with_shadows(pal, PicoMem.cram);
+         } else {
+            do_pal_convert(pal, PicoMem.cram);
+            if (Pico.est.rendstatus & PDRAW_SONIC_MODE) {
+               memcpy(&pal[0x80], pal, 0x40*2);
+            }
+         }
+      }
+
+
+  	   //Rotate CLUT.
+      for (i = 0; i < 256; i++) {
+         if ((i&0x18) == 8) {
+            unsigned short int tmp = pal[i];
+            pal[i] = pal[i+8];
+            pal[i+8] = tmp;
+         }
+      }
+
+      Pico.m.dirtyPal = 0;
+   }
+
+   if (PicoIn.AHW & PAHW_SMS) {
+      ps2->coreTexture->Mem = vout_buf;
+   } else {
+      ps2->coreTexture->Mem = Pico.est.Draw2FB;
+   }
+
+   ps2->padding = padding;
+
+#else
+   if (PicoIn.opt & POPT_ALT_RENDERER) {
+      /* In retro_init, PicoDrawSetOutBuf is called to make sure the output gets written to vout_buf, but this only
+       * applies to the line renderer (pico/draw.c). The faster tile-based renderer (pico/draw2.c) enabled by
+       * POPT_ALT_RENDERER writes to Pico.est.Draw2FB, so we need to manually copy that to vout_buf.
+       */
+      /* This section is mostly copied from pemu_finalize_frame in platform/linux/emu.c */
+      unsigned short *pd = (unsigned short *)vout_buf;
+      /* Skip the leftmost 8 columns (it seems to be used as some sort of caching or overscan area) */
+      unsigned char *ps = Pico.est.Draw2FB + 8;
+      unsigned short *pal = Pico.est.HighPal;
+      int x;
+      if (Pico.m.dirtyPal)
+         PicoDrawUpdateHighPal();
+      /* Copy up to the max height to include the overscan area, and skip the leftmost 8 columns again */
+      for (i = 0; i < VOUT_MAX_HEIGHT; i++, ps += 8)
+         for (x = 0; x < vout_width; x++)
+            *pd++ = pal[*ps++];
+   }
+
+   buff = (char*)vout_buf + vout_offset;
+#endif
+
+   video_cb((short *)buff,
       vout_width, vout_height, vout_width * 2);
 }
 
@@ -1362,6 +1740,7 @@ void retro_init(void)
 
 #ifdef _3DS
    ctr_svchack_successful = ctr_svchack_init();
+   check_rosalina();
 #elif defined(VITA)
    sceBlock = getVMBlock();
 #endif
@@ -1376,37 +1755,63 @@ void retro_init(void)
 #endif
       PicoIn.opt |= POPT_EN_DRC;
 #endif
-   PicoIn.sndRate = 44100;
+
+   struct retro_variable var = { .key = "picodrive_sound_rate" };
+   if (environ_cb(RETRO_ENVIRONMENT_GET_VARIABLE, &var) && var.value)
+      PicoIn.sndRate = atoi(var.value);
+   else
+      PicoIn.sndRate = INITIAL_SND_RATE;
+
    PicoIn.autoRgnOrder = 0x184; // US, EU, JP
 
-   vout_width = 320;
-   vout_height = 240;
+   vout_width = VOUT_MAX_WIDTH;
+   vout_height = VOUT_MAX_HEIGHT;
 #ifdef _3DS
    vout_buf = linearMemAlign(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2, 0x80);
+#elif defined(RENDER_GSKIT_PS2)
+   vout_buf = memalign(128, VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT);
+   retro_palette = memalign(128, gsKit_texture_size_ee(16, 16, GS_PSM_CT16));
 #else
    vout_buf = malloc(VOUT_MAX_WIDTH * VOUT_MAX_HEIGHT * 2);
 #endif
 
    PicoInit();
+#if defined(RENDER_GSKIT_PS2)
+   PicoDrawSetOutFormat(PDF_NONE, 0);
+	PicoDrawSetOutBuf(vout_buf, vout_width);
+   PicoDrawSetOutputMode4(PDF_8BIT);
+#else
    PicoDrawSetOutFormat(PDF_RGB555, 0);
    PicoDrawSetOutBuf(vout_buf, vout_width * 2);
+#endif
 
    //PicoIn.osdMessage = plat_status_msg_busy_next;
    PicoIn.mcdTrayOpen = disk_tray_open;
    PicoIn.mcdTrayClose = disk_tray_close;
 
-   update_variables();
+   frameskip_type             = 0;
+   frameskip_threshold        = 0;
+   frameskip_counter          = 0;
+   retro_audio_buff_active    = false;
+   retro_audio_buff_occupancy = 0;
+   retro_audio_buff_underrun  = false;
+   audio_latency              = 0;
+   update_audio_latency       = false;
+
+   update_variables(true);
 }
 
 void retro_deinit(void)
 {
 #ifdef _3DS
    linearFree(vout_buf);
+#elif defined(RENDER_GSKIT_PS2)
+   free(vout_buf);
+   free(retro_palette);
+   ps2 = NULL;
 #else
    free(vout_buf);
 #endif
    vout_buf = NULL;
    PicoExit();
 }
-
-// vim:shiftwidth=3:ts=3:expandtab

+ 0 - 1926
platform/libretro/libretro.h

@@ -1,1926 +0,0 @@
-/* Copyright (C) 2010-2014 The RetroArch team
- *
- * ---------------------------------------------------------------------------------------
- * The following license statement only applies to this libretro API header (libretro.h).
- * ---------------------------------------------------------------------------------------
- *
- * Permission is hereby granted, free of charge,
- * to any person obtaining a copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation the rights to
- * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software,
- * and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
- * INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
- * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
- * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-#ifndef LIBRETRO_H__
-#define LIBRETRO_H__
-
-#include <stdint.h>
-#include <stddef.h>
-#include <limits.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#ifndef __cplusplus
-#if defined(_MSC_VER) && !defined(SN_TARGET_PS3)
-/* Hack applied for MSVC when compiling in C89 mode
- * as it isn't C99-compliant. */
-#define bool unsigned char
-#define true 1
-#define false 0
-#else
-#include <stdbool.h>
-#endif
-#endif
-
-/* Used for checking API/ABI mismatches that can break libretro 
- * implementations.
- * It is not incremented for compatible changes to the API.
- */
-#define RETRO_API_VERSION         1
-
-/*
- * Libretro's fundamental device abstractions.
- *
- * Libretro's input system consists of some standardized device types,
- * such as a joypad (with/without analog), mouse, keyboard, lightgun 
- * and a pointer.
- *
- * The functionality of these devices are fixed, and individual cores 
- * map their own concept of a controller to libretro's abstractions.
- * This makes it possible for frontends to map the abstract types to a 
- * real input device, and not having to worry about binding input 
- * correctly to arbitrary controller layouts.
- */
-
-#define RETRO_DEVICE_TYPE_SHIFT         8
-#define RETRO_DEVICE_MASK               ((1 << RETRO_DEVICE_TYPE_SHIFT) - 1)
-#define RETRO_DEVICE_SUBCLASS(base, id) (((id + 1) << RETRO_DEVICE_TYPE_SHIFT) | base)
-
-/* Input disabled. */
-#define RETRO_DEVICE_NONE         0
-
-/* The JOYPAD is called RetroPad. It is essentially a Super Nintendo 
- * controller, but with additional L2/R2/L3/R3 buttons, similar to a 
- * PS1 DualShock. */
-#define RETRO_DEVICE_JOYPAD       1
-
-/* The mouse is a simple mouse, similar to Super Nintendo's mouse.
- * X and Y coordinates are reported relatively to last poll (poll callback).
- * It is up to the libretro implementation to keep track of where the mouse 
- * pointer is supposed to be on the screen.
- * The frontend must make sure not to interfere with its own hardware 
- * mouse pointer.
- */
-#define RETRO_DEVICE_MOUSE        2
-
-/* KEYBOARD device lets one poll for raw key pressed.
- * It is poll based, so input callback will return with the current 
- * pressed state.
- * For event/text based keyboard input, see
- * RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK.
- */
-#define RETRO_DEVICE_KEYBOARD     3
-
-/* Lightgun X/Y coordinates are reported relatively to last poll,
- * similar to mouse. */
-#define RETRO_DEVICE_LIGHTGUN     4
-
-/* The ANALOG device is an extension to JOYPAD (RetroPad).
- * Similar to DualShock it adds two analog sticks.
- * This is treated as a separate device type as it returns values in the 
- * full analog range of [-0x8000, 0x7fff]. Positive X axis is right.
- * Positive Y axis is down.
- * Only use ANALOG type when polling for analog values of the axes.
- */
-#define RETRO_DEVICE_ANALOG       5
-
-/* Abstracts the concept of a pointing mechanism, e.g. touch.
- * This allows libretro to query in absolute coordinates where on the 
- * screen a mouse (or something similar) is being placed.
- * For a touch centric device, coordinates reported are the coordinates
- * of the press.
- *
- * Coordinates in X and Y are reported as:
- * [-0x7fff, 0x7fff]: -0x7fff corresponds to the far left/top of the screen,
- * and 0x7fff corresponds to the far right/bottom of the screen.
- * The "screen" is here defined as area that is passed to the frontend and 
- * later displayed on the monitor.
- *
- * The frontend is free to scale/resize this screen as it sees fit, however,
- * (X, Y) = (-0x7fff, -0x7fff) will correspond to the top-left pixel of the 
- * game image, etc.
- *
- * To check if the pointer coordinates are valid (e.g. a touch display 
- * actually being touched), PRESSED returns 1 or 0.
- *
- * If using a mouse on a desktop, PRESSED will usually correspond to the 
- * left mouse button, but this is a frontend decision.
- * PRESSED will only return 1 if the pointer is inside the game screen.
- *
- * For multi-touch, the index variable can be used to successively query 
- * more presses.
- * If index = 0 returns true for _PRESSED, coordinates can be extracted
- * with _X, _Y for index = 0. One can then query _PRESSED, _X, _Y with 
- * index = 1, and so on.
- * Eventually _PRESSED will return false for an index. No further presses 
- * are registered at this point. */
-#define RETRO_DEVICE_POINTER      6
-
-/* Buttons for the RetroPad (JOYPAD).
- * The placement of these is equivalent to placements on the 
- * Super Nintendo controller.
- * L2/R2/L3/R3 buttons correspond to the PS1 DualShock. */
-#define RETRO_DEVICE_ID_JOYPAD_B        0
-#define RETRO_DEVICE_ID_JOYPAD_Y        1
-#define RETRO_DEVICE_ID_JOYPAD_SELECT   2
-#define RETRO_DEVICE_ID_JOYPAD_START    3
-#define RETRO_DEVICE_ID_JOYPAD_UP       4
-#define RETRO_DEVICE_ID_JOYPAD_DOWN     5
-#define RETRO_DEVICE_ID_JOYPAD_LEFT     6
-#define RETRO_DEVICE_ID_JOYPAD_RIGHT    7
-#define RETRO_DEVICE_ID_JOYPAD_A        8
-#define RETRO_DEVICE_ID_JOYPAD_X        9
-#define RETRO_DEVICE_ID_JOYPAD_L       10
-#define RETRO_DEVICE_ID_JOYPAD_R       11
-#define RETRO_DEVICE_ID_JOYPAD_L2      12
-#define RETRO_DEVICE_ID_JOYPAD_R2      13
-#define RETRO_DEVICE_ID_JOYPAD_L3      14
-#define RETRO_DEVICE_ID_JOYPAD_R3      15
-
-/* Index / Id values for ANALOG device. */
-#define RETRO_DEVICE_INDEX_ANALOG_LEFT   0
-#define RETRO_DEVICE_INDEX_ANALOG_RIGHT  1
-#define RETRO_DEVICE_ID_ANALOG_X         0
-#define RETRO_DEVICE_ID_ANALOG_Y         1
-
-/* Id values for MOUSE. */
-#define RETRO_DEVICE_ID_MOUSE_X          0
-#define RETRO_DEVICE_ID_MOUSE_Y          1
-#define RETRO_DEVICE_ID_MOUSE_LEFT       2
-#define RETRO_DEVICE_ID_MOUSE_RIGHT      3
-#define RETRO_DEVICE_ID_MOUSE_WHEELUP    4
-#define RETRO_DEVICE_ID_MOUSE_WHEELDOWN  5
-#define RETRO_DEVICE_ID_MOUSE_MIDDLE     6
-
-/* Id values for LIGHTGUN types. */
-#define RETRO_DEVICE_ID_LIGHTGUN_X        0
-#define RETRO_DEVICE_ID_LIGHTGUN_Y        1
-#define RETRO_DEVICE_ID_LIGHTGUN_TRIGGER  2
-#define RETRO_DEVICE_ID_LIGHTGUN_CURSOR   3
-#define RETRO_DEVICE_ID_LIGHTGUN_TURBO    4
-#define RETRO_DEVICE_ID_LIGHTGUN_PAUSE    5
-#define RETRO_DEVICE_ID_LIGHTGUN_START    6
-
-/* Id values for POINTER. */
-#define RETRO_DEVICE_ID_POINTER_X         0
-#define RETRO_DEVICE_ID_POINTER_Y         1
-#define RETRO_DEVICE_ID_POINTER_PRESSED   2
-
-/* Returned from retro_get_region(). */
-#define RETRO_REGION_NTSC  0
-#define RETRO_REGION_PAL   1
-
-/* Id values for LANGUAGE */
-enum retro_language
-{
-   RETRO_LANGUAGE_ENGLISH             =  0,
-   RETRO_LANGUAGE_JAPANESE            =  1,
-   RETRO_LANGUAGE_FRENCH              =  2,
-   RETRO_LANGUAGE_SPANISH             =  3,
-   RETRO_LANGUAGE_GERMAN              =  4,
-   RETRO_LANGUAGE_ITALIAN             =  5,
-   RETRO_LANGUAGE_DUTCH               =  6,
-   RETRO_LANGUAGE_PORTUGUESE          =  7,
-   RETRO_LANGUAGE_RUSSIAN             =  8,
-   RETRO_LANGUAGE_KOREAN              =  9,
-   RETRO_LANGUAGE_CHINESE_TRADITIONAL = 10,
-   RETRO_LANGUAGE_CHINESE_SIMPLIFIED  = 11,
-   RETRO_LANGUAGE_LAST,
-
-   /* Ensure sizeof(enum) == sizeof(int) */
-   RETRO_LANGUAGE_DUMMY          = INT_MAX 
-};
-
-/* Passed to retro_get_memory_data/size().
- * If the memory type doesn't apply to the 
- * implementation NULL/0 can be returned.
- */
-#define RETRO_MEMORY_MASK        0xff
-
-/* Regular save RAM. This RAM is usually found on a game cartridge,
- * backed up by a battery.
- * If save game data is too complex for a single memory buffer,
- * the SAVE_DIRECTORY (preferably) or SYSTEM_DIRECTORY environment
- * callback can be used. */
-#define RETRO_MEMORY_SAVE_RAM    0
-
-/* Some games have a built-in clock to keep track of time.
- * This memory is usually just a couple of bytes to keep track of time.
- */
-#define RETRO_MEMORY_RTC         1
-
-/* System ram lets a frontend peek into a game systems main RAM. */
-#define RETRO_MEMORY_SYSTEM_RAM  2
-
-/* Video ram lets a frontend peek into a game systems video RAM (VRAM). */
-#define RETRO_MEMORY_VIDEO_RAM   3
-
-/* Keysyms used for ID in input state callback when polling RETRO_KEYBOARD. */
-enum retro_key
-{
-   RETROK_UNKNOWN        = 0,
-   RETROK_FIRST          = 0,
-   RETROK_BACKSPACE      = 8,
-   RETROK_TAB            = 9,
-   RETROK_CLEAR          = 12,
-   RETROK_RETURN         = 13,
-   RETROK_PAUSE          = 19,
-   RETROK_ESCAPE         = 27,
-   RETROK_SPACE          = 32,
-   RETROK_EXCLAIM        = 33,
-   RETROK_QUOTEDBL       = 34,
-   RETROK_HASH           = 35,
-   RETROK_DOLLAR         = 36,
-   RETROK_AMPERSAND      = 38,
-   RETROK_QUOTE          = 39,
-   RETROK_LEFTPAREN      = 40,
-   RETROK_RIGHTPAREN     = 41,
-   RETROK_ASTERISK       = 42,
-   RETROK_PLUS           = 43,
-   RETROK_COMMA          = 44,
-   RETROK_MINUS          = 45,
-   RETROK_PERIOD         = 46,
-   RETROK_SLASH          = 47,
-   RETROK_0              = 48,
-   RETROK_1              = 49,
-   RETROK_2              = 50,
-   RETROK_3              = 51,
-   RETROK_4              = 52,
-   RETROK_5              = 53,
-   RETROK_6              = 54,
-   RETROK_7              = 55,
-   RETROK_8              = 56,
-   RETROK_9              = 57,
-   RETROK_COLON          = 58,
-   RETROK_SEMICOLON      = 59,
-   RETROK_LESS           = 60,
-   RETROK_EQUALS         = 61,
-   RETROK_GREATER        = 62,
-   RETROK_QUESTION       = 63,
-   RETROK_AT             = 64,
-   RETROK_LEFTBRACKET    = 91,
-   RETROK_BACKSLASH      = 92,
-   RETROK_RIGHTBRACKET   = 93,
-   RETROK_CARET          = 94,
-   RETROK_UNDERSCORE     = 95,
-   RETROK_BACKQUOTE      = 96,
-   RETROK_a              = 97,
-   RETROK_b              = 98,
-   RETROK_c              = 99,
-   RETROK_d              = 100,
-   RETROK_e              = 101,
-   RETROK_f              = 102,
-   RETROK_g              = 103,
-   RETROK_h              = 104,
-   RETROK_i              = 105,
-   RETROK_j              = 106,
-   RETROK_k              = 107,
-   RETROK_l              = 108,
-   RETROK_m              = 109,
-   RETROK_n              = 110,
-   RETROK_o              = 111,
-   RETROK_p              = 112,
-   RETROK_q              = 113,
-   RETROK_r              = 114,
-   RETROK_s              = 115,
-   RETROK_t              = 116,
-   RETROK_u              = 117,
-   RETROK_v              = 118,
-   RETROK_w              = 119,
-   RETROK_x              = 120,
-   RETROK_y              = 121,
-   RETROK_z              = 122,
-   RETROK_DELETE         = 127,
-
-   RETROK_KP0            = 256,
-   RETROK_KP1            = 257,
-   RETROK_KP2            = 258,
-   RETROK_KP3            = 259,
-   RETROK_KP4            = 260,
-   RETROK_KP5            = 261,
-   RETROK_KP6            = 262,
-   RETROK_KP7            = 263,
-   RETROK_KP8            = 264,
-   RETROK_KP9            = 265,
-   RETROK_KP_PERIOD      = 266,
-   RETROK_KP_DIVIDE      = 267,
-   RETROK_KP_MULTIPLY    = 268,
-   RETROK_KP_MINUS       = 269,
-   RETROK_KP_PLUS        = 270,
-   RETROK_KP_ENTER       = 271,
-   RETROK_KP_EQUALS      = 272,
-
-   RETROK_UP             = 273,
-   RETROK_DOWN           = 274,
-   RETROK_RIGHT          = 275,
-   RETROK_LEFT           = 276,
-   RETROK_INSERT         = 277,
-   RETROK_HOME           = 278,
-   RETROK_END            = 279,
-   RETROK_PAGEUP         = 280,
-   RETROK_PAGEDOWN       = 281,
-
-   RETROK_F1             = 282,
-   RETROK_F2             = 283,
-   RETROK_F3             = 284,
-   RETROK_F4             = 285,
-   RETROK_F5             = 286,
-   RETROK_F6             = 287,
-   RETROK_F7             = 288,
-   RETROK_F8             = 289,
-   RETROK_F9             = 290,
-   RETROK_F10            = 291,
-   RETROK_F11            = 292,
-   RETROK_F12            = 293,
-   RETROK_F13            = 294,
-   RETROK_F14            = 295,
-   RETROK_F15            = 296,
-
-   RETROK_NUMLOCK        = 300,
-   RETROK_CAPSLOCK       = 301,
-   RETROK_SCROLLOCK      = 302,
-   RETROK_RSHIFT         = 303,
-   RETROK_LSHIFT         = 304,
-   RETROK_RCTRL          = 305,
-   RETROK_LCTRL          = 306,
-   RETROK_RALT           = 307,
-   RETROK_LALT           = 308,
-   RETROK_RMETA          = 309,
-   RETROK_LMETA          = 310,
-   RETROK_LSUPER         = 311,
-   RETROK_RSUPER         = 312,
-   RETROK_MODE           = 313,
-   RETROK_COMPOSE        = 314,
-
-   RETROK_HELP           = 315,
-   RETROK_PRINT          = 316,
-   RETROK_SYSREQ         = 317,
-   RETROK_BREAK          = 318,
-   RETROK_MENU           = 319,
-   RETROK_POWER          = 320,
-   RETROK_EURO           = 321,
-   RETROK_UNDO           = 322,
-
-   RETROK_LAST,
-
-   RETROK_DUMMY          = INT_MAX /* Ensure sizeof(enum) == sizeof(int) */
-};
-
-enum retro_mod
-{
-   RETROKMOD_NONE       = 0x0000,
-
-   RETROKMOD_SHIFT      = 0x01,
-   RETROKMOD_CTRL       = 0x02,
-   RETROKMOD_ALT        = 0x04,
-   RETROKMOD_META       = 0x08,
-
-   RETROKMOD_NUMLOCK    = 0x10,
-   RETROKMOD_CAPSLOCK   = 0x20,
-   RETROKMOD_SCROLLOCK  = 0x40,
-
-   RETROKMOD_DUMMY = INT_MAX /* Ensure sizeof(enum) == sizeof(int) */
-};
-
-/* If set, this call is not part of the public libretro API yet. It can 
- * change or be removed at any time. */
-#define RETRO_ENVIRONMENT_EXPERIMENTAL 0x10000
-/* Environment callback to be used internally in frontend. */
-#define RETRO_ENVIRONMENT_PRIVATE 0x20000
-
-/* Environment commands. */
-#define RETRO_ENVIRONMENT_SET_ROTATION  1  /* const unsigned * --
-                                            * Sets screen rotation of graphics.
-                                            * Is only implemented if rotation can be accelerated by hardware.
-                                            * Valid values are 0, 1, 2, 3, which rotates screen by 0, 90, 180, 
-                                            * 270 degrees counter-clockwise respectively.
-                                            */
-#define RETRO_ENVIRONMENT_GET_OVERSCAN  2  /* bool * --
-                                            * Boolean value whether or not the implementation should use overscan, 
-                                            * or crop away overscan.
-                                            */
-#define RETRO_ENVIRONMENT_GET_CAN_DUPE  3  /* bool * --
-                                            * Boolean value whether or not frontend supports frame duping,
-                                            * passing NULL to video frame callback.
-                                            */
-
-                                           /* Environ 4, 5 are no longer supported (GET_VARIABLE / SET_VARIABLES), 
-                                            * and reserved to avoid possible ABI clash.
-                                            */
-
-#define RETRO_ENVIRONMENT_SET_MESSAGE   6  /* const struct retro_message * --
-                                            * Sets a message to be displayed in implementation-specific manner 
-                                            * for a certain amount of 'frames'.
-                                            * Should not be used for trivial messages, which should simply be 
-                                            * logged via RETRO_ENVIRONMENT_GET_LOG_INTERFACE (or as a 
-                                            * fallback, stderr).
-                                            */
-#define RETRO_ENVIRONMENT_SHUTDOWN      7  /* N/A (NULL) --
-                                            * Requests the frontend to shutdown.
-                                            * Should only be used if game has a specific
-                                            * way to shutdown the game from a menu item or similar.
-                                            */
-#define RETRO_ENVIRONMENT_SET_PERFORMANCE_LEVEL 8
-                                           /* const unsigned * --
-                                            * Gives a hint to the frontend how demanding this implementation
-                                            * is on a system. E.g. reporting a level of 2 means
-                                            * this implementation should run decently on all frontends
-                                            * of level 2 and up.
-                                            *
-                                            * It can be used by the frontend to potentially warn
-                                            * about too demanding implementations.
-                                            *
-                                            * The levels are "floating".
-                                            *
-                                            * This function can be called on a per-game basis,
-                                            * as certain games an implementation can play might be
-                                            * particularly demanding.
-                                            * If called, it should be called in retro_load_game().
-                                            */
-#define RETRO_ENVIRONMENT_GET_SYSTEM_DIRECTORY 9
-                                           /* const char ** --
-                                            * Returns the "system" directory of the frontend.
-                                            * This directory can be used to store system specific 
-                                            * content such as BIOSes, configuration data, etc.
-                                            * The returned value can be NULL.
-                                            * If so, no such directory is defined,
-                                            * and it's up to the implementation to find a suitable directory.
-                                            *
-                                            * NOTE: Some cores used this folder also for "save" data such as 
-                                            * memory cards, etc, for lack of a better place to put it.
-                                            * This is now discouraged, and if possible, cores should try to 
-                                            * use the new GET_SAVE_DIRECTORY.
-                                            */
-#define RETRO_ENVIRONMENT_SET_PIXEL_FORMAT 10
-                                           /* const enum retro_pixel_format * --
-                                            * Sets the internal pixel format used by the implementation.
-                                            * The default pixel format is RETRO_PIXEL_FORMAT_0RGB1555.
-                                            * This pixel format however, is deprecated (see enum retro_pixel_format).
-                                            * If the call returns false, the frontend does not support this pixel 
-                                            * format.
-                                            *
-                                            * This function should be called inside retro_load_game() or 
-                                            * retro_get_system_av_info().
-                                            */
-#define RETRO_ENVIRONMENT_SET_INPUT_DESCRIPTORS 11
-                                           /* const struct retro_input_descriptor * --
-                                            * Sets an array of retro_input_descriptors.
-                                            * It is up to the frontend to present this in a usable way.
-                                            * The array is terminated by retro_input_descriptor::description 
-                                            * being set to NULL.
-                                            * This function can be called at any time, but it is recommended 
-                                            * to call it as early as possible.
-                                            */
-#define RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK 12
-                                           /* const struct retro_keyboard_callback * --
-                                            * Sets a callback function used to notify core about keyboard events.
-                                            */
-#define RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE 13
-                                           /* const struct retro_disk_control_callback * --
-                                            * Sets an interface which frontend can use to eject and insert 
-                                            * disk images.
-                                            * This is used for games which consist of multiple images and 
-                                            * must be manually swapped out by the user (e.g. PSX).
-                                            */
-#define RETRO_ENVIRONMENT_SET_HW_RENDER 14
-                                           /* struct retro_hw_render_callback * --
-                                            * Sets an interface to let a libretro core render with 
-                                            * hardware acceleration.
-                                            * Should be called in retro_load_game().
-                                            * If successful, libretro cores will be able to render to a 
-                                            * frontend-provided framebuffer.
-                                            * The size of this framebuffer will be at least as large as 
-                                            * max_width/max_height provided in get_av_info().
-                                            * If HW rendering is used, pass only RETRO_HW_FRAME_BUFFER_VALID or 
-                                            * NULL to retro_video_refresh_t.
-                                            */
-#define RETRO_ENVIRONMENT_GET_VARIABLE 15
-                                           /* struct retro_variable * --
-                                            * Interface to acquire user-defined information from environment
-                                            * that cannot feasibly be supported in a multi-system way.
-                                            * 'key' should be set to a key which has already been set by 
-                                            * SET_VARIABLES.
-                                            * 'data' will be set to a value or NULL.
-                                            */
-#define RETRO_ENVIRONMENT_SET_VARIABLES 16
-                                           /* const struct retro_variable * --
-                                            * Allows an implementation to signal the environment
-                                            * which variables it might want to check for later using 
-                                            * GET_VARIABLE.
-                                            * This allows the frontend to present these variables to 
-                                            * a user dynamically.
-                                            * This should be called as early as possible (ideally in 
-                                            * retro_set_environment).
-                                            *
-                                            * 'data' points to an array of retro_variable structs 
-                                            * terminated by a { NULL, NULL } element.
-                                            * retro_variable::key should be namespaced to not collide 
-                                            * with other implementations' keys. E.g. A core called 
-                                            * 'foo' should use keys named as 'foo_option'.
-                                            * retro_variable::value should contain a human readable 
-                                            * description of the key as well as a '|' delimited list 
-                                            * of expected values.
-                                            *
-                                            * The number of possible options should be very limited, 
-                                            * i.e. it should be feasible to cycle through options 
-                                            * without a keyboard.
-                                            *
-                                            * First entry should be treated as a default.
-                                            *
-                                            * Example entry:
-                                            * { "foo_option", "Speed hack coprocessor X; false|true" }
-                                            *
-                                            * Text before first ';' is description. This ';' must be 
-                                            * followed by a space, and followed by a list of possible 
-                                            * values split up with '|'.
-                                            *
-                                            * Only strings are operated on. The possible values will 
-                                            * generally be displayed and stored as-is by the frontend.
-                                            */
-#define RETRO_ENVIRONMENT_GET_VARIABLE_UPDATE 17
-                                           /* bool * --
-                                            * Result is set to true if some variables are updated by
-                                            * frontend since last call to RETRO_ENVIRONMENT_GET_VARIABLE.
-                                            * Variables should be queried with GET_VARIABLE.
-                                            */
-#define RETRO_ENVIRONMENT_SET_SUPPORT_NO_GAME 18
-                                           /* const bool * --
-                                            * If true, the libretro implementation supports calls to 
-                                            * retro_load_game() with NULL as argument.
-                                            * Used by cores which can run without particular game data.
-                                            * This should be called within retro_set_environment() only.
-                                            */
-#define RETRO_ENVIRONMENT_GET_LIBRETRO_PATH 19
-                                           /* const char ** --
-                                            * Retrieves the absolute path from where this libretro 
-                                            * implementation was loaded.
-                                            * NULL is returned if the libretro was loaded statically 
-                                            * (i.e. linked statically to frontend), or if the path cannot be 
-                                            * determined.
-                                            * Mostly useful in cooperation with SET_SUPPORT_NO_GAME as assets can 
-                                            * be loaded without ugly hacks.
-                                            */
-                                           
-                                           /* Environment 20 was an obsolete version of SET_AUDIO_CALLBACK. 
-                                            * It was not used by any known core at the time,
-                                            * and was removed from the API. */
-#define RETRO_ENVIRONMENT_SET_AUDIO_CALLBACK 22
-                                           /* const struct retro_audio_callback * --
-                                            * Sets an interface which is used to notify a libretro core about audio 
-                                            * being available for writing.
-                                            * The callback can be called from any thread, so a core using this must 
-                                            * have a thread safe audio implementation.
-                                            * It is intended for games where audio and video are completely 
-                                            * asynchronous and audio can be generated on the fly.
-                                            * This interface is not recommended for use with emulators which have 
-                                            * highly synchronous audio.
-                                            *
-                                            * The callback only notifies about writability; the libretro core still 
-                                            * has to call the normal audio callbacks
-                                            * to write audio. The audio callbacks must be called from within the 
-                                            * notification callback.
-                                            * The amount of audio data to write is up to the implementation.
-                                            * Generally, the audio callback will be called continously in a loop.
-                                            *
-                                            * Due to thread safety guarantees and lack of sync between audio and 
-                                            * video, a frontend  can selectively disallow this interface based on 
-                                            * internal configuration. A core using this interface must also 
-                                            * implement the "normal" audio interface.
-                                            *
-                                            * A libretro core using SET_AUDIO_CALLBACK should also make use of 
-                                            * SET_FRAME_TIME_CALLBACK.
-                                            */
-#define RETRO_ENVIRONMENT_SET_FRAME_TIME_CALLBACK 21
-                                           /* const struct retro_frame_time_callback * --
-                                            * Lets the core know how much time has passed since last 
-                                            * invocation of retro_run().
-                                            * The frontend can tamper with the timing to fake fast-forward, 
-                                            * slow-motion, frame stepping, etc.
-                                            * In this case the delta time will use the reference value 
-                                            * in frame_time_callback..
-                                            */
-#define RETRO_ENVIRONMENT_GET_RUMBLE_INTERFACE 23
-                                           /* struct retro_rumble_interface * --
-                                            * Gets an interface which is used by a libretro core to set 
-                                            * state of rumble motors in controllers.
-                                            * A strong and weak motor is supported, and they can be 
-                                            * controlled indepedently.
-                                            */
-#define RETRO_ENVIRONMENT_GET_INPUT_DEVICE_CAPABILITIES 24
-                                           /* uint64_t * --
-                                            * Gets a bitmask telling which device type are expected to be 
-                                            * handled properly in a call to retro_input_state_t.
-                                            * Devices which are not handled or recognized always return 
-                                            * 0 in retro_input_state_t.
-                                            * Example bitmask: caps = (1 << RETRO_DEVICE_JOYPAD) | (1 << RETRO_DEVICE_ANALOG).
-                                            * Should only be called in retro_run().
-                                            */
-#define RETRO_ENVIRONMENT_GET_SENSOR_INTERFACE (25 | RETRO_ENVIRONMENT_EXPERIMENTAL)
-                                           /* struct retro_sensor_interface * --
-                                            * Gets access to the sensor interface.
-                                            * The purpose of this interface is to allow
-                                            * setting state related to sensors such as polling rate, 
-                                            * enabling/disable it entirely, etc.
-                                            * Reading sensor state is done via the normal 
-                                            * input_state_callback API.
-                                            */
-#define RETRO_ENVIRONMENT_GET_CAMERA_INTERFACE (26 | RETRO_ENVIRONMENT_EXPERIMENTAL)
-                                           /* struct retro_camera_callback * --
-                                            * Gets an interface to a video camera driver.
-                                            * A libretro core can use this interface to get access to a 
-                                            * video camera.
-                                            * New video frames are delivered in a callback in same 
-                                            * thread as retro_run().
-                                            *
-                                            * GET_CAMERA_INTERFACE should be called in retro_load_game().
-                                            *
-                                            * Depending on the camera implementation used, camera frames 
-                                            * will be delivered as a raw framebuffer,
-                                            * or as an OpenGL texture directly.
-                                            *
-                                            * The core has to tell the frontend here which types of 
-                                            * buffers can be handled properly.
-                                            * An OpenGL texture can only be handled when using a 
-                                            * libretro GL core (SET_HW_RENDER).
-                                            * It is recommended to use a libretro GL core when 
-                                            * using camera interface.
-                                            *
-                                            * The camera is not started automatically. The retrieved start/stop 
-                                            * functions must be used to explicitly
-                                            * start and stop the camera driver.
-                                            */
-#define RETRO_ENVIRONMENT_GET_LOG_INTERFACE 27
-                                           /* struct retro_log_callback * --
-                                            * Gets an interface for logging. This is useful for 
-                                            * logging in a cross-platform way
-                                            * as certain platforms cannot use use stderr for logging. 
-                                            * It also allows the frontend to
-                                            * show logging information in a more suitable way.
-                                            * If this interface is not used, libretro cores should 
-                                            * log to stderr as desired.
-                                            */
-#define RETRO_ENVIRONMENT_GET_PERF_INTERFACE 28
-                                           /* struct retro_perf_callback * --
-                                            * Gets an interface for performance counters. This is useful 
-                                            * for performance logging in a cross-platform way and for detecting 
-                                            * architecture-specific features, such as SIMD support.
-                                            */
-#define RETRO_ENVIRONMENT_GET_LOCATION_INTERFACE 29
-                                           /* struct retro_location_callback * --
-                                            * Gets access to the location interface.
-                                            * The purpose of this interface is to be able to retrieve 
-                                            * location-based information from the host device,
-                                            * such as current latitude / longitude.
-                                            */
-#define RETRO_ENVIRONMENT_GET_CONTENT_DIRECTORY 30
-                                           /* const char ** --
-                                            * Returns the "content" directory of the frontend.
-                                            * This directory can be used to store specific assets that the 
-                                            * core relies upon, such as art assets,
-                                            * input data, etc etc.
-                                            * The returned value can be NULL.
-                                            * If so, no such directory is defined,
-                                            * and it's up to the implementation to find a suitable directory.
-                                            */
-#define RETRO_ENVIRONMENT_GET_SAVE_DIRECTORY 31
-                                           /* const char ** --
-                                            * Returns the "save" directory of the frontend.
-                                            * This directory can be used to store SRAM, memory cards, 
-                                            * high scores, etc, if the libretro core
-                                            * cannot use the regular memory interface (retro_get_memory_data()).
-                                            *
-                                            * NOTE: libretro cores used to check GET_SYSTEM_DIRECTORY for 
-                                            * similar things before.
-                                            * They should still check GET_SYSTEM_DIRECTORY if they want to 
-                                            * be backwards compatible.
-                                            * The path here can be NULL. It should only be non-NULL if the 
-                                            * frontend user has set a specific save path.
-                                            */
-#define RETRO_ENVIRONMENT_SET_SYSTEM_AV_INFO 32
-                                           /* const struct retro_system_av_info * --
-                                            * Sets a new av_info structure. This can only be called from 
-                                            * within retro_run().
-                                            * This should *only* be used if the core is completely altering the 
-                                            * internal resolutions, aspect ratios, timings, sampling rate, etc.
-                                            * Calling this can require a full reinitialization of video/audio 
-                                            * drivers in the frontend,
-                                            *
-                                            * so it is important to call it very sparingly, and usually only with 
-                                            * the users explicit consent.
-                                            * An eventual driver reinitialize will happen so that video and 
-                                            * audio callbacks
-                                            * happening after this call within the same retro_run() call will 
-                                            * target the newly initialized driver.
-                                            *
-                                            * This callback makes it possible to support configurable resolutions 
-                                            * in games, which can be useful to
-                                            * avoid setting the "worst case" in max_width/max_height.
-                                            *
-                                            * ***HIGHLY RECOMMENDED*** Do not call this callback every time 
-                                            * resolution changes in an emulator core if it's
-                                            * expected to be a temporary change, for the reasons of possible 
-                                            * driver reinitialization.
-                                            * This call is not a free pass for not trying to provide 
-                                            * correct values in retro_get_system_av_info(). If you need to change 
-                                            * things like aspect ratio or nominal width/height, 
-                                            * use RETRO_ENVIRONMENT_SET_GEOMETRY, which is a softer variant 
-                                            * of SET_SYSTEM_AV_INFO.
-                                            *
-                                            * If this returns false, the frontend does not acknowledge a 
-                                            * changed av_info struct.
-                                            */
-#define RETRO_ENVIRONMENT_SET_PROC_ADDRESS_CALLBACK 33
-                                           /* const struct retro_get_proc_address_interface * --
-                                            * Allows a libretro core to announce support for the 
-                                            * get_proc_address() interface.
-                                            * This interface allows for a standard way to extend libretro where 
-                                            * use of environment calls are too indirect,
-                                            * e.g. for cases where the frontend wants to call directly into the core.
-                                            *
-                                            * If a core wants to expose this interface, SET_PROC_ADDRESS_CALLBACK 
-                                            * **MUST** be called from within retro_set_environment().
-                                            */
-#define RETRO_ENVIRONMENT_SET_SUBSYSTEM_INFO 34
-                                           /* const struct retro_subsystem_info * --
-                                            * This environment call introduces the concept of libretro "subsystems".
-                                            * A subsystem is a variant of a libretro core which supports 
-                                            * different kinds of games.
-                                            * The purpose of this is to support e.g. emulators which might 
-                                            * have special needs, e.g. Super Nintendo's Super GameBoy, Sufami Turbo.
-                                            * It can also be used to pick among subsystems in an explicit way 
-                                            * if the libretro implementation is a multi-system emulator itself.
-                                            *
-                                            * Loading a game via a subsystem is done with retro_load_game_special(),
-                                            * and this environment call allows a libretro core to expose which 
-                                            * subsystems are supported for use with retro_load_game_special().
-                                            * A core passes an array of retro_game_special_info which is terminated 
-                                            * with a zeroed out retro_game_special_info struct.
-                                            *
-                                            * If a core wants to use this functionality, SET_SUBSYSTEM_INFO
-                                            * **MUST** be called from within retro_set_environment().
-                                            */
-#define RETRO_ENVIRONMENT_SET_CONTROLLER_INFO 35
-                                           /* const struct retro_controller_info * --
-                                            * This environment call lets a libretro core tell the frontend 
-                                            * which controller types are recognized in calls to 
-                                            * retro_set_controller_port_device().
-                                            *
-                                            * Some emulators such as Super Nintendo
-                                            * support multiple lightgun types which must be specifically 
-                                            * selected from.
-                                            * It is therefore sometimes necessary for a frontend to be able 
-                                            * to tell the core about a special kind of input device which is 
-                                            * not covered by the libretro input API.
-                                            *
-                                            * In order for a frontend to understand the workings of an input device,
-                                            * it must be a specialized type
-                                            * of the generic device types already defined in the libretro API.
-                                            *
-                                            * Which devices are supported can vary per input port.
-                                            * The core must pass an array of const struct retro_controller_info which 
-                                            * is terminated with a blanked out struct. Each element of the struct 
-                                            * corresponds to an ascending port index to 
-                                            * retro_set_controller_port_device().
-                                            * Even if special device types are set in the libretro core, 
-                                            * libretro should only poll input based on the base input device types.
-                                            */
-#define RETRO_ENVIRONMENT_SET_MEMORY_MAPS (36 | RETRO_ENVIRONMENT_EXPERIMENTAL)
-                                           /* const struct retro_memory_map * --
-                                            * This environment call lets a libretro core tell the frontend 
-                                            * about the memory maps this core emulates.
-                                            * This can be used to implement, for example, cheats in a core-agnostic way.
-                                            *
-                                            * Should only be used by emulators; it doesn't make much sense for 
-                                            * anything else.
-                                            * It is recommended to expose all relevant pointers through 
-                                            * retro_get_memory_* as well.
-                                            *
-                                            * Can be called from retro_init and retro_load_game.
-                                            */
-#define RETRO_ENVIRONMENT_SET_GEOMETRY 37
-                                           /* const struct retro_game_geometry * --
-                                            * This environment call is similar to SET_SYSTEM_AV_INFO for changing 
-                                            * video parameters, but provides a guarantee that drivers will not be 
-                                            * reinitialized.
-                                            * This can only be called from within retro_run().
-                                            *
-                                            * The purpose of this call is to allow a core to alter nominal 
-                                            * width/heights as well as aspect ratios on-the-fly, which can be 
-                                            * useful for some emulators to change in run-time.
-                                            *
-                                            * max_width/max_height arguments are ignored and cannot be changed
-                                            * with this call as this could potentially require a reinitialization or a 
-                                            * non-constant time operation.
-                                            * If max_width/max_height are to be changed, SET_SYSTEM_AV_INFO is required.
-                                            *
-                                            * A frontend must guarantee that this environment call completes in 
-                                            * constant time.
-                                            */
-#define RETRO_ENVIRONMENT_GET_USERNAME 38 
-                                           /* const char **
-                                            * Returns the specified username of the frontend, if specified by the user.
-                                            * This username can be used as a nickname for a core that has online facilities 
-                                            * or any other mode where personalization of the user is desirable.
-                                            * The returned value can be NULL.
-                                            * If this environ callback is used by a core that requires a valid username, 
-                                            * a default username should be specified by the core.
-                                            */
-#define RETRO_ENVIRONMENT_GET_LANGUAGE 39
-                                           /* unsigned * --
-                                            * Returns the specified language of the frontend, if specified by the user.
-                                            * It can be used by the core for localization purposes.
-                                            */
-
-#define RETRO_MEMDESC_CONST     (1 << 0)   /* The frontend will never change this memory area once retro_load_game has returned. */
-#define RETRO_MEMDESC_BIGENDIAN (1 << 1)   /* The memory area contains big endian data. Default is little endian. */
-#define RETRO_MEMDESC_ALIGN_2   (1 << 16)  /* All memory access in this area is aligned to their own size, or 2, whichever is smaller. */
-#define RETRO_MEMDESC_ALIGN_4   (2 << 16)
-#define RETRO_MEMDESC_ALIGN_8   (3 << 16)
-#define RETRO_MEMDESC_MINSIZE_2 (1 << 24)  /* All memory in this region is accessed at least 2 bytes at the time. */
-#define RETRO_MEMDESC_MINSIZE_4 (2 << 24)
-#define RETRO_MEMDESC_MINSIZE_8 (3 << 24)
-struct retro_memory_descriptor
-{
-   uint64_t flags;
-
-   /* Pointer to the start of the relevant ROM or RAM chip.
-    * It's strongly recommended to use 'offset' if possible, rather than 
-    * doing math on the pointer.
-    *
-    * If the same byte is mapped my multiple descriptors, their descriptors 
-    * must have the same pointer.
-    * If 'start' does not point to the first byte in the pointer, put the 
-    * difference in 'offset' instead.
-    *
-    * May be NULL if there's nothing usable here (e.g. hardware registers and 
-    * open bus). No flags should be set if the pointer is NULL.
-    * It's recommended to minimize the number of descriptors if possible,
-    * but not mandatory. */
-   void *ptr;
-   size_t offset;
-
-   /* This is the location in the emulated address space 
-    * where the mapping starts. */
-   size_t start;
-
-   /* Which bits must be same as in 'start' for this mapping to apply.
-    * The first memory descriptor to claim a certain byte is the one 
-    * that applies.
-    * A bit which is set in 'start' must also be set in this.
-    * Can be zero, in which case each byte is assumed mapped exactly once. 
-    * In this case, 'len' must be a power of two. */
-   size_t select;
-
-   /* If this is nonzero, the set bits are assumed not connected to the 
-    * memory chip's address pins. */
-   size_t disconnect;
-
-   /* This one tells the size of the current memory area.
-    * If, after start+disconnect are applied, the address is higher than 
-    * this, the highest bit of the address is cleared.
-    *
-    * If the address is still too high, the next highest bit is cleared.
-    * Can be zero, in which case it's assumed to be infinite (as limited 
-    * by 'select' and 'disconnect'). */
-   size_t len;
-
-   /* To go from emulated address to physical address, the following 
-    * order applies:
-    * Subtract 'start', pick off 'disconnect', apply 'len', add 'offset'.
-    *
-    * The address space name must consist of only a-zA-Z0-9_-, 
-    * should be as short as feasible (maximum length is 8 plus the NUL),
-    * and may not be any other address space plus one or more 0-9A-F 
-    * at the end.
-    * However, multiple memory descriptors for the same address space is 
-    * allowed, and the address space name can be empty. NULL is treated 
-    * as empty.
-    *
-    * Address space names are case sensitive, but avoid lowercase if possible.
-    * The same pointer may exist in multiple address spaces.
-    *
-    * Examples:
-    * blank+blank - valid (multiple things may be mapped in the same namespace)
-    * 'Sp'+'Sp' - valid (multiple things may be mapped in the same namespace)
-    * 'A'+'B' - valid (neither is a prefix of each other)
-    * 'S'+blank - valid ('S' is not in 0-9A-F)
-    * 'a'+blank - valid ('a' is not in 0-9A-F)
-    * 'a'+'A' - valid (neither is a prefix of each other)
-    * 'AR'+blank - valid ('R' is not in 0-9A-F)
-    * 'ARB'+blank - valid (the B can't be part of the address either, because 
-    * there is no namespace 'AR')
-    * blank+'B' - not valid, because it's ambigous which address space B1234 
-    * would refer to.
-    * The length can't be used for that purpose; the frontend may want 
-    * to append arbitrary data to an address, without a separator. */
-   const char *addrspace;
-};
-
-/* The frontend may use the largest value of 'start'+'select' in a 
- * certain namespace to infer the size of the address space.
- *
- * If the address space is larger than that, a mapping with .ptr=NULL 
- * should be at the end of the array, with .select set to all ones for 
- * as long as the address space is big.
- *
- * Sample descriptors (minus .ptr, and RETRO_MEMFLAG_ on the flags):
- * SNES WRAM:
- * .start=0x7E0000, .len=0x20000
- * (Note that this must be mapped before the ROM in most cases; some of the 
- * ROM mappers 
- * try to claim $7E0000, or at least $7E8000.)
- * SNES SPC700 RAM:
- * .addrspace="S", .len=0x10000
- * SNES WRAM mirrors:
- * .flags=MIRROR, .start=0x000000, .select=0xC0E000, .len=0x2000
- * .flags=MIRROR, .start=0x800000, .select=0xC0E000, .len=0x2000
- * SNES WRAM mirrors, alternate equivalent descriptor:
- * .flags=MIRROR, .select=0x40E000, .disconnect=~0x1FFF
- * (Various similar constructions can be created by combining parts of 
- * the above two.)
- * SNES LoROM (512KB, mirrored a couple of times):
- * .flags=CONST, .start=0x008000, .select=0x408000, .disconnect=0x8000, .len=512*1024
- * .flags=CONST, .start=0x400000, .select=0x400000, .disconnect=0x8000, .len=512*1024
- * SNES HiROM (4MB):
- * .flags=CONST,                 .start=0x400000, .select=0x400000, .len=4*1024*1024
- * .flags=CONST, .offset=0x8000, .start=0x008000, .select=0x408000, .len=4*1024*1024
- * SNES ExHiROM (8MB):
- * .flags=CONST, .offset=0,                  .start=0xC00000, .select=0xC00000, .len=4*1024*1024
- * .flags=CONST, .offset=4*1024*1024,        .start=0x400000, .select=0xC00000, .len=4*1024*1024
- * .flags=CONST, .offset=0x8000,             .start=0x808000, .select=0xC08000, .len=4*1024*1024
- * .flags=CONST, .offset=4*1024*1024+0x8000, .start=0x008000, .select=0xC08000, .len=4*1024*1024
- * Clarify the size of the address space:
- * .ptr=NULL, .select=0xFFFFFF
- * .len can be implied by .select in many of them, but was included for clarity.
- */
-
-struct retro_memory_map
-{
-   const struct retro_memory_descriptor *descriptors;
-   unsigned num_descriptors;
-};
-
-struct retro_controller_description
-{
-   /* Human-readable description of the controller. Even if using a generic 
-    * input device type, this can be set to the particular device type the 
-    * core uses. */
-   const char *desc;
-
-   /* Device type passed to retro_set_controller_port_device(). If the device 
-    * type is a sub-class of a generic input device type, use the 
-    * RETRO_DEVICE_SUBCLASS macro to create an ID.
-    *
-    * E.g. RETRO_DEVICE_SUBCLASS(RETRO_DEVICE_JOYPAD, 1). */
-   unsigned id;
-};
-
-struct retro_controller_info
-{
-   const struct retro_controller_description *types;
-   unsigned num_types;
-};
-
-struct retro_subsystem_memory_info
-{
-   /* The extension associated with a memory type, e.g. "psram". */
-   const char *extension;
-
-   /* The memory type for retro_get_memory(). This should be at 
-    * least 0x100 to avoid conflict with standardized 
-    * libretro memory types. */
-   unsigned type;
-};
-
-struct retro_subsystem_rom_info
-{
-   /* Describes what the content is (SGB BIOS, GB ROM, etc). */
-   const char *desc;
-
-   /* Same definition as retro_get_system_info(). */
-   const char *valid_extensions;
-
-   /* Same definition as retro_get_system_info(). */
-   bool need_fullpath;
-
-   /* Same definition as retro_get_system_info(). */
-   bool block_extract;
-
-   /* This is set if the content is required to load a game. 
-    * If this is set to false, a zeroed-out retro_game_info can be passed. */
-   bool required;
-
-   /* Content can have multiple associated persistent 
-    * memory types (retro_get_memory()). */
-   const struct retro_subsystem_memory_info *memory;
-   unsigned num_memory;
-};
-
-struct retro_subsystem_info
-{
-   /* Human-readable string of the subsystem type, e.g. "Super GameBoy" */
-   const char *desc;
-
-   /* A computer friendly short string identifier for the subsystem type.
-    * This name must be [a-z].
-    * E.g. if desc is "Super GameBoy", this can be "sgb".
-    * This identifier can be used for command-line interfaces, etc.
-    */
-   const char *ident;
-
-   /* Infos for each content file. The first entry is assumed to be the 
-    * "most significant" content for frontend purposes.
-    * E.g. with Super GameBoy, the first content should be the GameBoy ROM, 
-    * as it is the most "significant" content to a user.
-    * If a frontend creates new file paths based on the content used 
-    * (e.g. savestates), it should use the path for the first ROM to do so. */
-   const struct retro_subsystem_rom_info *roms;
-
-   /* Number of content files associated with a subsystem. */
-   unsigned num_roms;
-   
-   /* The type passed to retro_load_game_special(). */
-   unsigned id;
-};
-
-typedef void (*retro_proc_address_t)(void);
-
-/* libretro API extension functions:
- * (None here so far).
- *
- * Get a symbol from a libretro core.
- * Cores should only return symbols which are actual 
- * extensions to the libretro API.
- *
- * Frontends should not use this to obtain symbols to standard 
- * libretro entry points (static linking or dlsym).
- *
- * The symbol name must be equal to the function name, 
- * e.g. if void retro_foo(void); exists, the symbol must be called "retro_foo".
- * The returned function pointer must be cast to the corresponding type.
- */
-typedef retro_proc_address_t (*retro_get_proc_address_t)(const char *sym);
-
-struct retro_get_proc_address_interface
-{
-   retro_get_proc_address_t get_proc_address;
-};
-
-enum retro_log_level
-{
-   RETRO_LOG_DEBUG = 0,
-   RETRO_LOG_INFO,
-   RETRO_LOG_WARN,
-   RETRO_LOG_ERROR,
-
-   RETRO_LOG_DUMMY = INT_MAX
-};
-
-/* Logging function. Takes log level argument as well. */
-typedef void (*retro_log_printf_t)(enum retro_log_level level,
-      const char *fmt, ...);
-
-struct retro_log_callback
-{
-   retro_log_printf_t log;
-};
-
-/* Performance related functions */
-
-/* ID values for SIMD CPU features */
-#define RETRO_SIMD_SSE      (1 << 0)
-#define RETRO_SIMD_SSE2     (1 << 1)
-#define RETRO_SIMD_VMX      (1 << 2)
-#define RETRO_SIMD_VMX128   (1 << 3)
-#define RETRO_SIMD_AVX      (1 << 4)
-#define RETRO_SIMD_NEON     (1 << 5)
-#define RETRO_SIMD_SSE3     (1 << 6)
-#define RETRO_SIMD_SSSE3    (1 << 7)
-#define RETRO_SIMD_MMX      (1 << 8)
-#define RETRO_SIMD_MMXEXT   (1 << 9)
-#define RETRO_SIMD_SSE4     (1 << 10)
-#define RETRO_SIMD_SSE42    (1 << 11)
-#define RETRO_SIMD_AVX2     (1 << 12)
-#define RETRO_SIMD_VFPU     (1 << 13)
-#define RETRO_SIMD_PS       (1 << 14)
-#define RETRO_SIMD_AES      (1 << 15)
-
-typedef uint64_t retro_perf_tick_t;
-typedef int64_t retro_time_t;
-
-struct retro_perf_counter
-{
-   const char *ident;
-   retro_perf_tick_t start;
-   retro_perf_tick_t total;
-   retro_perf_tick_t call_cnt;
-
-   bool registered;
-};
-
-/* Returns current time in microseconds.
- * Tries to use the most accurate timer available.
- */
-typedef retro_time_t (*retro_perf_get_time_usec_t)(void);
-
-/* A simple counter. Usually nanoseconds, but can also be CPU cycles.
- * Can be used directly if desired (when creating a more sophisticated 
- * performance counter system).
- * */
-typedef retro_perf_tick_t (*retro_perf_get_counter_t)(void);
-
-/* Returns a bit-mask of detected CPU features (RETRO_SIMD_*). */
-typedef uint64_t (*retro_get_cpu_features_t)(void);
-
-/* Asks frontend to log and/or display the state of performance counters.
- * Performance counters can always be poked into manually as well.
- */
-typedef void (*retro_perf_log_t)(void);
-
-/* Register a performance counter.
- * ident field must be set with a discrete value and other values in 
- * retro_perf_counter must be 0.
- * Registering can be called multiple times. To avoid calling to 
- * frontend redundantly, you can check registered field first. */
-typedef void (*retro_perf_register_t)(struct retro_perf_counter *counter);
-
-/* Starts a registered counter. */
-typedef void (*retro_perf_start_t)(struct retro_perf_counter *counter);
-
-/* Stops a registered counter. */
-typedef void (*retro_perf_stop_t)(struct retro_perf_counter *counter);
-
-/* For convenience it can be useful to wrap register, start and stop in macros.
- * E.g.:
- * #ifdef LOG_PERFORMANCE
- * #define RETRO_PERFORMANCE_INIT(perf_cb, name) static struct retro_perf_counter name = {#name}; if (!name.registered) perf_cb.perf_register(&(name))
- * #define RETRO_PERFORMANCE_START(perf_cb, name) perf_cb.perf_start(&(name))
- * #define RETRO_PERFORMANCE_STOP(perf_cb, name) perf_cb.perf_stop(&(name))
- * #else
- * ... Blank macros ...
- * #endif
- *
- * These can then be used mid-functions around code snippets.
- *
- * extern struct retro_perf_callback perf_cb;  * Somewhere in the core.
- *
- * void do_some_heavy_work(void)
- * {
- *    RETRO_PERFORMANCE_INIT(cb, work_1;
- *    RETRO_PERFORMANCE_START(cb, work_1);
- *    heavy_work_1();
- *    RETRO_PERFORMANCE_STOP(cb, work_1);
- *
- *    RETRO_PERFORMANCE_INIT(cb, work_2);
- *    RETRO_PERFORMANCE_START(cb, work_2);
- *    heavy_work_2();
- *    RETRO_PERFORMANCE_STOP(cb, work_2);
- * }
- *
- * void retro_deinit(void)
- * {
- *    perf_cb.perf_log();  * Log all perf counters here for example.
- * }
- */
-
-struct retro_perf_callback
-{
-   retro_perf_get_time_usec_t    get_time_usec;
-   retro_get_cpu_features_t      get_cpu_features;
-
-   retro_perf_get_counter_t      get_perf_counter;
-   retro_perf_register_t         perf_register;
-   retro_perf_start_t            perf_start;
-   retro_perf_stop_t             perf_stop;
-   retro_perf_log_t              perf_log;
-};
-
-/* FIXME: Document the sensor API and work out behavior.
- * It will be marked as experimental until then.
- */
-enum retro_sensor_action
-{
-   RETRO_SENSOR_ACCELEROMETER_ENABLE = 0,
-   RETRO_SENSOR_ACCELEROMETER_DISABLE,
-
-   RETRO_SENSOR_DUMMY = INT_MAX
-};
-
-/* Id values for SENSOR types. */
-#define RETRO_SENSOR_ACCELEROMETER_X 0
-#define RETRO_SENSOR_ACCELEROMETER_Y 1
-#define RETRO_SENSOR_ACCELEROMETER_Z 2
-
-typedef bool (*retro_set_sensor_state_t)(unsigned port, 
-      enum retro_sensor_action action, unsigned rate);
-
-typedef float (*retro_sensor_get_input_t)(unsigned port, unsigned id);
-
-struct retro_sensor_interface
-{
-   retro_set_sensor_state_t set_sensor_state;
-   retro_sensor_get_input_t get_sensor_input;
-};
-
-enum retro_camera_buffer
-{
-   RETRO_CAMERA_BUFFER_OPENGL_TEXTURE = 0,
-   RETRO_CAMERA_BUFFER_RAW_FRAMEBUFFER,
-
-   RETRO_CAMERA_BUFFER_DUMMY = INT_MAX
-};
-
-/* Starts the camera driver. Can only be called in retro_run(). */
-typedef bool (*retro_camera_start_t)(void);
-
-/* Stops the camera driver. Can only be called in retro_run(). */
-typedef void (*retro_camera_stop_t)(void);
-
-/* Callback which signals when the camera driver is initialized 
- * and/or deinitialized.
- * retro_camera_start_t can be called in initialized callback.
- */
-typedef void (*retro_camera_lifetime_status_t)(void);
-
-/* A callback for raw framebuffer data. buffer points to an XRGB8888 buffer.
- * Width, height and pitch are similar to retro_video_refresh_t.
- * First pixel is top-left origin.
- */
-typedef void (*retro_camera_frame_raw_framebuffer_t)(const uint32_t *buffer, 
-      unsigned width, unsigned height, size_t pitch);
-
-/* A callback for when OpenGL textures are used.
- *
- * texture_id is a texture owned by camera driver.
- * Its state or content should be considered immutable, except for things like 
- * texture filtering and clamping.
- *
- * texture_target is the texture target for the GL texture.
- * These can include e.g. GL_TEXTURE_2D, GL_TEXTURE_RECTANGLE, and possibly 
- * more depending on extensions.
- *
- * affine points to a packed 3x3 column-major matrix used to apply an affine 
- * transform to texture coordinates. (affine_matrix * vec3(coord_x, coord_y, 1.0))
- * After transform, normalized texture coord (0, 0) should be bottom-left 
- * and (1, 1) should be top-right (or (width, height) for RECTANGLE).
- *
- * GL-specific typedefs are avoided here to avoid relying on gl.h in 
- * the API definition.
- */
-typedef void (*retro_camera_frame_opengl_texture_t)(unsigned texture_id, 
-      unsigned texture_target, const float *affine);
-
-struct retro_camera_callback
-{
-   /* Set by libretro core. 
-    * Example bitmask: caps = (1 << RETRO_CAMERA_BUFFER_OPENGL_TEXTURE) | (1 << RETRO_CAMERA_BUFFER_RAW_FRAMEBUFFER).
-    */
-   uint64_t caps; 
-
-   unsigned width; /* Desired resolution for camera. Is only used as a hint. */
-   unsigned height;
-   retro_camera_start_t start; /* Set by frontend. */
-   retro_camera_stop_t stop; /* Set by frontend. */
-
-   /* Set by libretro core if raw framebuffer callbacks will be used. */
-   retro_camera_frame_raw_framebuffer_t frame_raw_framebuffer;
-   /* Set by libretro core if OpenGL texture callbacks will be used. */
-   retro_camera_frame_opengl_texture_t frame_opengl_texture; 
-
-   /* Set by libretro core. Called after camera driver is initialized and 
-    * ready to be started.
-    * Can be NULL, in which this callback is not called.
-    */
-   retro_camera_lifetime_status_t initialized;
-
-   /* Set by libretro core. Called right before camera driver is 
-    * deinitialized.
-    * Can be NULL, in which this callback is not called.
-    */
-   retro_camera_lifetime_status_t deinitialized;
-};
-
-/* Sets the interval of time and/or distance at which to update/poll 
- * location-based data.
- *
- * To ensure compatibility with all location-based implementations,
- * values for both interval_ms and interval_distance should be provided.
- *
- * interval_ms is the interval expressed in milliseconds.
- * interval_distance is the distance interval expressed in meters.
- */
-typedef void (*retro_location_set_interval_t)(unsigned interval_ms,
-      unsigned interval_distance);
-
-/* Start location services. The device will start listening for changes to the
- * current location at regular intervals (which are defined with 
- * retro_location_set_interval_t). */
-typedef bool (*retro_location_start_t)(void);
-
-/* Stop location services. The device will stop listening for changes 
- * to the current location. */
-typedef void (*retro_location_stop_t)(void);
-
-/* Get the position of the current location. Will set parameters to 
- * 0 if no new  location update has happened since the last time. */
-typedef bool (*retro_location_get_position_t)(double *lat, double *lon,
-      double *horiz_accuracy, double *vert_accuracy);
-
-/* Callback which signals when the location driver is initialized 
- * and/or deinitialized.
- * retro_location_start_t can be called in initialized callback.
- */
-typedef void (*retro_location_lifetime_status_t)(void);
-
-struct retro_location_callback
-{
-   retro_location_start_t         start;
-   retro_location_stop_t          stop;
-   retro_location_get_position_t  get_position;
-   retro_location_set_interval_t  set_interval;
-
-   retro_location_lifetime_status_t initialized;
-   retro_location_lifetime_status_t deinitialized;
-};
-
-enum retro_rumble_effect
-{
-   RETRO_RUMBLE_STRONG = 0,
-   RETRO_RUMBLE_WEAK = 1,
-
-   RETRO_RUMBLE_DUMMY = INT_MAX
-};
-
-/* Sets rumble state for joypad plugged in port 'port'. 
- * Rumble effects are controlled independently,
- * and setting e.g. strong rumble does not override weak rumble.
- * Strength has a range of [0, 0xffff].
- *
- * Returns true if rumble state request was honored. 
- * Calling this before first retro_run() is likely to return false. */
-typedef bool (*retro_set_rumble_state_t)(unsigned port, 
-      enum retro_rumble_effect effect, uint16_t strength);
-
-struct retro_rumble_interface
-{
-   retro_set_rumble_state_t set_rumble_state;
-};
-
-/* Notifies libretro that audio data should be written. */
-typedef void (*retro_audio_callback_t)(void);
-
-/* True: Audio driver in frontend is active, and callback is 
- * expected to be called regularily.
- * False: Audio driver in frontend is paused or inactive. 
- * Audio callback will not be called until set_state has been 
- * called with true.
- * Initial state is false (inactive).
- */
-typedef void (*retro_audio_set_state_callback_t)(bool enabled);
-
-struct retro_audio_callback
-{
-   retro_audio_callback_t callback;
-   retro_audio_set_state_callback_t set_state;
-};
-
-/* Notifies a libretro core of time spent since last invocation 
- * of retro_run() in microseconds.
- *
- * It will be called right before retro_run() every frame.
- * The frontend can tamper with timing to support cases like 
- * fast-forward, slow-motion and framestepping.
- *
- * In those scenarios the reference frame time value will be used. */
-typedef int64_t retro_usec_t;
-typedef void (*retro_frame_time_callback_t)(retro_usec_t usec);
-struct retro_frame_time_callback
-{
-   retro_frame_time_callback_t callback;
-   /* Represents the time of one frame. It is computed as 
-    * 1000000 / fps, but the implementation will resolve the 
-    * rounding to ensure that framestepping, etc is exact. */
-   retro_usec_t reference;
-};
-
-/* Pass this to retro_video_refresh_t if rendering to hardware.
- * Passing NULL to retro_video_refresh_t is still a frame dupe as normal.
- * */
-#define RETRO_HW_FRAME_BUFFER_VALID ((void*)-1)
-
-/* Invalidates the current HW context.
- * Any GL state is lost, and must not be deinitialized explicitly.
- * If explicit deinitialization is desired by the libretro core,
- * it should implement context_destroy callback.
- * If called, all GPU resources must be reinitialized.
- * Usually called when frontend reinits video driver.
- * Also called first time video driver is initialized, 
- * allowing libretro core to initialize resources.
- */
-typedef void (*retro_hw_context_reset_t)(void);
-
-/* Gets current framebuffer which is to be rendered to.
- * Could change every frame potentially.
- */
-typedef uintptr_t (*retro_hw_get_current_framebuffer_t)(void);
-
-/* Get a symbol from HW context. */
-typedef retro_proc_address_t (*retro_hw_get_proc_address_t)(const char *sym);
-
-enum retro_hw_context_type
-{
-   RETRO_HW_CONTEXT_NONE             = 0,
-   /* OpenGL 2.x. Driver can choose to use latest compatibility context. */
-   RETRO_HW_CONTEXT_OPENGL           = 1, 
-   /* OpenGL ES 2.0. */
-   RETRO_HW_CONTEXT_OPENGLES2        = 2,
-   /* Modern desktop core GL context. Use version_major/
-    * version_minor fields to set GL version. */
-   RETRO_HW_CONTEXT_OPENGL_CORE      = 3,
-   /* OpenGL ES 3.0 */
-   RETRO_HW_CONTEXT_OPENGLES3        = 4,
-   /* OpenGL ES 3.1+. Set version_major/version_minor. For GLES2 and GLES3,
-    * use the corresponding enums directly. */
-   RETRO_HW_CONTEXT_OPENGLES_VERSION = 5,
-
-   RETRO_HW_CONTEXT_DUMMY = INT_MAX
-};
-
-struct retro_hw_render_callback
-{
-   /* Which API to use. Set by libretro core. */
-   enum retro_hw_context_type context_type;
-
-   /* Called when a context has been created or when it has been reset.
-    * An OpenGL context is only valid after context_reset() has been called.
-    *
-    * When context_reset is called, OpenGL resources in the libretro 
-    * implementation are guaranteed to be invalid.
-    *
-    * It is possible that context_reset is called multiple times during an 
-    * application lifecycle.
-    * If context_reset is called without any notification (context_destroy),
-    * the OpenGL context was lost and resources should just be recreated
-    * without any attempt to "free" old resources.
-    */
-   retro_hw_context_reset_t context_reset;
-
-   /* Set by frontend. */
-   retro_hw_get_current_framebuffer_t get_current_framebuffer;
-
-   /* Set by frontend. */
-   retro_hw_get_proc_address_t get_proc_address;
-
-   /* Set if render buffers should have depth component attached. */
-   bool depth;
-
-   /* Set if stencil buffers should be attached. */
-   bool stencil;
-
-   /* If depth and stencil are true, a packed 24/8 buffer will be added. 
-    * Only attaching stencil is invalid and will be ignored. */
-
-   /* Use conventional bottom-left origin convention. If false, 
-    * standard libretro top-left origin semantics are used. */
-   bool bottom_left_origin;
-   
-   /* Major version number for core GL context or GLES 3.1+. */
-   unsigned version_major;
-
-   /* Minor version number for core GL context or GLES 3.1+. */
-   unsigned version_minor;
-
-   /* If this is true, the frontend will go very far to avoid 
-    * resetting context in scenarios like toggling fullscreen, etc.
-    */
-   bool cache_context;
-
-   /* The reset callback might still be called in extreme situations 
-    * such as if the context is lost beyond recovery.
-    *
-    * For optimal stability, set this to false, and allow context to be 
-    * reset at any time.
-    */
-   
-   /* A callback to be called before the context is destroyed in a 
-    * controlled way by the frontend. */
-   retro_hw_context_reset_t context_destroy;
-
-   /* OpenGL resources can be deinitialized cleanly at this step.
-    * context_destroy can be set to NULL, in which resources will 
-    * just be destroyed without any notification.
-    *
-    * Even when context_destroy is non-NULL, it is possible that 
-    * context_reset is called without any destroy notification.
-    * This happens if context is lost by external factors (such as 
-    * notified by GL_ARB_robustness).
-    *
-    * In this case, the context is assumed to be already dead,
-    * and the libretro implementation must not try to free any OpenGL 
-    * resources in the subsequent context_reset.
-    */
-
-   /* Creates a debug context. */
-   bool debug_context;
-};
-
-/* Callback type passed in RETRO_ENVIRONMENT_SET_KEYBOARD_CALLBACK. 
- * Called by the frontend in response to keyboard events.
- * down is set if the key is being pressed, or false if it is being released.
- * keycode is the RETROK value of the char.
- * character is the text character of the pressed key. (UTF-32).
- * key_modifiers is a set of RETROKMOD values or'ed together.
- *
- * The pressed/keycode state can be indepedent of the character.
- * It is also possible that multiple characters are generated from a 
- * single keypress.
- * Keycode events should be treated separately from character events.
- * However, when possible, the frontend should try to synchronize these.
- * If only a character is posted, keycode should be RETROK_UNKNOWN.
- *
- * Similarily if only a keycode event is generated with no corresponding 
- * character, character should be 0.
- */
-typedef void (*retro_keyboard_event_t)(bool down, unsigned keycode, 
-      uint32_t character, uint16_t key_modifiers);
-
-struct retro_keyboard_callback
-{
-   retro_keyboard_event_t callback;
-};
-
-/* Callbacks for RETRO_ENVIRONMENT_SET_DISK_CONTROL_INTERFACE.
- * Should be set for implementations which can swap out multiple disk 
- * images in runtime.
- *
- * If the implementation can do this automatically, it should strive to do so.
- * However, there are cases where the user must manually do so.
- *
- * Overview: To swap a disk image, eject the disk image with 
- * set_eject_state(true).
- * Set the disk index with set_image_index(index). Insert the disk again 
- * with set_eject_state(false).
- */
-
-/* If ejected is true, "ejects" the virtual disk tray.
- * When ejected, the disk image index can be set.
- */
-typedef bool (*retro_set_eject_state_t)(bool ejected);
-
-/* Gets current eject state. The initial state is 'not ejected'. */
-typedef bool (*retro_get_eject_state_t)(void);
-
-/* Gets current disk index. First disk is index 0.
- * If return value is >= get_num_images(), no disk is currently inserted.
- */
-typedef unsigned (*retro_get_image_index_t)(void);
-
-/* Sets image index. Can only be called when disk is ejected.
- * The implementation supports setting "no disk" by using an 
- * index >= get_num_images().
- */
-typedef bool (*retro_set_image_index_t)(unsigned index);
-
-/* Gets total number of images which are available to use. */
-typedef unsigned (*retro_get_num_images_t)(void);
-
-struct retro_game_info;
-
-/* Replaces the disk image associated with index.
- * Arguments to pass in info have same requirements as retro_load_game().
- * Virtual disk tray must be ejected when calling this.
- *
- * Replacing a disk image with info = NULL will remove the disk image 
- * from the internal list.
- * As a result, calls to get_image_index() can change.
- *
- * E.g. replace_image_index(1, NULL), and previous get_image_index() 
- * returned 4 before.
- * Index 1 will be removed, and the new index is 3.
- */
-typedef bool (*retro_replace_image_index_t)(unsigned index,
-      const struct retro_game_info *info);
-
-/* Adds a new valid index (get_num_images()) to the internal disk list.
- * This will increment subsequent return values from get_num_images() by 1.
- * This image index cannot be used until a disk image has been set 
- * with replace_image_index. */
-typedef bool (*retro_add_image_index_t)(void);
-
-struct retro_disk_control_callback
-{
-   retro_set_eject_state_t set_eject_state;
-   retro_get_eject_state_t get_eject_state;
-
-   retro_get_image_index_t get_image_index;
-   retro_set_image_index_t set_image_index;
-   retro_get_num_images_t  get_num_images;
-
-   retro_replace_image_index_t replace_image_index;
-   retro_add_image_index_t add_image_index;
-};
-
-enum retro_pixel_format
-{
-   /* 0RGB1555, native endian.
-    * 0 bit must be set to 0.
-    * This pixel format is default for compatibility concerns only.
-    * If a 15/16-bit pixel format is desired, consider using RGB565. */
-   RETRO_PIXEL_FORMAT_0RGB1555 = 0,
-
-   /* XRGB8888, native endian.
-    * X bits are ignored. */
-   RETRO_PIXEL_FORMAT_XRGB8888 = 1,
-
-   /* RGB565, native endian.
-    * This pixel format is the recommended format to use if a 15/16-bit
-    * format is desired as it is the pixel format that is typically 
-    * available on a wide range of low-power devices.
-    *
-    * It is also natively supported in APIs like OpenGL ES. */
-   RETRO_PIXEL_FORMAT_RGB565   = 2,
-
-   /* Ensure sizeof() == sizeof(int). */
-   RETRO_PIXEL_FORMAT_UNKNOWN  = INT_MAX
-};
-
-struct retro_message
-{
-   const char *msg;        /* Message to be displayed. */
-   unsigned    frames;     /* Duration in frames of message. */
-};
-
-/* Describes how the libretro implementation maps a libretro input bind
- * to its internal input system through a human readable string.
- * This string can be used to better let a user configure input. */
-struct retro_input_descriptor
-{
-   /* Associates given parameters with a description. */
-   unsigned port;
-   unsigned device;
-   unsigned index;
-   unsigned id;
-
-   /* Human readable description for parameters.
-    * The pointer must remain valid until
-    * retro_unload_game() is called. */
-   const char *description; 
-};
-
-struct retro_system_info
-{
-   /* All pointers are owned by libretro implementation, and pointers must 
-    * remain valid until retro_deinit() is called. */
-
-   const char *library_name;      /* Descriptive name of library. Should not 
-                                   * contain any version numbers, etc. */
-   const char *library_version;   /* Descriptive version of core. */
-
-   const char *valid_extensions;  /* A string listing probably content 
-                                   * extensions the core will be able to 
-                                   * load, separated with pipe.
-                                   * I.e. "bin|rom|iso".
-                                   * Typically used for a GUI to filter 
-                                   * out extensions. */
-
-   /* If true, retro_load_game() is guaranteed to provide a valid pathname 
-    * in retro_game_info::path.
-    * ::data and ::size are both invalid.
-    *
-    * If false, ::data and ::size are guaranteed to be valid, but ::path 
-    * might not be valid.
-    *
-    * This is typically set to true for libretro implementations that must 
-    * load from file.
-    * Implementations should strive for setting this to false, as it allows 
-    * the frontend to perform patching, etc. */
-   bool        need_fullpath;                                       
-
-   /* If true, the frontend is not allowed to extract any archives before 
-    * loading the real content.
-    * Necessary for certain libretro implementations that load games 
-    * from zipped archives. */
-   bool        block_extract;     
-};
-
-struct retro_game_geometry
-{
-   unsigned base_width;    /* Nominal video width of game. */
-   unsigned base_height;   /* Nominal video height of game. */
-   unsigned max_width;     /* Maximum possible width of game. */
-   unsigned max_height;    /* Maximum possible height of game. */
-
-   float    aspect_ratio;  /* Nominal aspect ratio of game. If
-                            * aspect_ratio is <= 0.0, an aspect ratio
-                            * of base_width / base_height is assumed.
-                            * A frontend could override this setting,
-                            * if desired. */
-};
-
-struct retro_system_timing
-{
-   double fps;             /* FPS of video content. */
-   double sample_rate;     /* Sampling rate of audio. */
-};
-
-struct retro_system_av_info
-{
-   struct retro_game_geometry geometry;
-   struct retro_system_timing timing;
-};
-
-struct retro_variable
-{
-   /* Variable to query in RETRO_ENVIRONMENT_GET_VARIABLE.
-    * If NULL, obtains the complete environment string if more 
-    * complex parsing is necessary.
-    * The environment string is formatted as key-value pairs 
-    * delimited by semicolons as so:
-    * "key1=value1;key2=value2;..."
-    */
-   const char *key;
-   
-   /* Value to be obtained. If key does not exist, it is set to NULL. */
-   const char *value;
-};
-
-struct retro_game_info
-{
-   const char *path;       /* Path to game, UTF-8 encoded.
-                            * Usually used as a reference.
-                            * May be NULL if rom was loaded from stdin
-                            * or similar. 
-                            * retro_system_info::need_fullpath guaranteed 
-                            * that this path is valid. */
-   const void *data;       /* Memory buffer of loaded game. Will be NULL 
-                            * if need_fullpath was set. */
-   size_t      size;       /* Size of memory buffer. */
-   const char *meta;       /* String of implementation specific meta-data. */
-};
-
-/* Callbacks */
-
-/* Environment callback. Gives implementations a way of performing 
- * uncommon tasks. Extensible. */
-typedef bool (*retro_environment_t)(unsigned cmd, void *data);
-
-/* Render a frame. Pixel format is 15-bit 0RGB1555 native endian 
- * unless changed (see RETRO_ENVIRONMENT_SET_PIXEL_FORMAT).
- *
- * Width and height specify dimensions of buffer.
- * Pitch specifices length in bytes between two lines in buffer.
- *
- * For performance reasons, it is highly recommended to have a frame 
- * that is packed in memory, i.e. pitch == width * byte_per_pixel.
- * Certain graphic APIs, such as OpenGL ES, do not like textures 
- * that are not packed in memory.
- */
-typedef void (*retro_video_refresh_t)(const void *data, unsigned width,
-      unsigned height, size_t pitch);
-
-/* Renders a single audio frame. Should only be used if implementation 
- * generates a single sample at a time.
- * Format is signed 16-bit native endian.
- */
-typedef void (*retro_audio_sample_t)(int16_t left, int16_t right);
-
-/* Renders multiple audio frames in one go.
- *
- * One frame is defined as a sample of left and right channels, interleaved.
- * I.e. int16_t buf[4] = { l, r, l, r }; would be 2 frames.
- * Only one of the audio callbacks must ever be used.
- */
-typedef size_t (*retro_audio_sample_batch_t)(const int16_t *data,
-      size_t frames);
-
-/* Polls input. */
-typedef void (*retro_input_poll_t)(void);
-
-/* Queries for input for player 'port'. device will be masked with 
- * RETRO_DEVICE_MASK.
- *
- * Specialization of devices such as RETRO_DEVICE_JOYPAD_MULTITAP that 
- * have been set with retro_set_controller_port_device()
- * will still use the higher level RETRO_DEVICE_JOYPAD to request input.
- */
-typedef int16_t (*retro_input_state_t)(unsigned port, unsigned device, 
-      unsigned index, unsigned id);
-
-/* Sets callbacks. retro_set_environment() is guaranteed to be called 
- * before retro_init().
- *
- * The rest of the set_* functions are guaranteed to have been called 
- * before the first call to retro_run() is made. */
-void retro_set_environment(retro_environment_t);
-void retro_set_video_refresh(retro_video_refresh_t);
-void retro_set_audio_sample(retro_audio_sample_t);
-void retro_set_audio_sample_batch(retro_audio_sample_batch_t);
-void retro_set_input_poll(retro_input_poll_t);
-void retro_set_input_state(retro_input_state_t);
-
-/* Library global initialization/deinitialization. */
-void retro_init(void);
-void retro_deinit(void);
-
-/* Must return RETRO_API_VERSION. Used to validate ABI compatibility
- * when the API is revised. */
-unsigned retro_api_version(void);
-
-/* Gets statically known system info. Pointers provided in *info 
- * must be statically allocated.
- * Can be called at any time, even before retro_init(). */
-void retro_get_system_info(struct retro_system_info *info);
-
-/* Gets information about system audio/video timings and geometry.
- * Can be called only after retro_load_game() has successfully completed.
- * NOTE: The implementation of this function might not initialize every 
- * variable if needed.
- * E.g. geom.aspect_ratio might not be initialized if core doesn't 
- * desire a particular aspect ratio. */
-void retro_get_system_av_info(struct retro_system_av_info *info);
-
-/* Sets device to be used for player 'port'.
- * By default, RETRO_DEVICE_JOYPAD is assumed to be plugged into all 
- * available ports.
- * Setting a particular device type is not a guarantee that libretro cores 
- * will only poll input based on that particular device type. It is only a 
- * hint to the libretro core when a core cannot automatically detect the 
- * appropriate input device type on its own. It is also relevant when a 
- * core can change its behavior depending on device type. */
-void retro_set_controller_port_device(unsigned port, unsigned device);
-
-/* Resets the current game. */
-void retro_reset(void);
-
-/* Runs the game for one video frame.
- * During retro_run(), input_poll callback must be called at least once.
- * 
- * If a frame is not rendered for reasons where a game "dropped" a frame,
- * this still counts as a frame, and retro_run() should explicitly dupe 
- * a frame if GET_CAN_DUPE returns true.
- * In this case, the video callback can take a NULL argument for data.
- */
-void retro_run(void);
-
-/* Returns the amount of data the implementation requires to serialize 
- * internal state (save states).
- * Between calls to retro_load_game() and retro_unload_game(), the 
- * returned size is never allowed to be larger than a previous returned 
- * value, to ensure that the frontend can allocate a save state buffer once.
- */
-size_t retro_serialize_size(void);
-
-/* Serializes internal state. If failed, or size is lower than
- * retro_serialize_size(), it should return false, true otherwise. */
-bool retro_serialize(void *data, size_t size);
-bool retro_unserialize(const void *data, size_t size);
-
-void retro_cheat_reset(void);
-void retro_cheat_set(unsigned index, bool enabled, const char *code);
-
-/* Loads a game. */
-bool retro_load_game(const struct retro_game_info *game);
-
-/* Loads a "special" kind of game. Should not be used,
- * except in extreme cases. */
-bool retro_load_game_special(
-  unsigned game_type,
-  const struct retro_game_info *info, size_t num_info
-);
-
-/* Unloads a currently loaded game. */
-void retro_unload_game(void);
-
-/* Gets region of game. */
-unsigned retro_get_region(void);
-
-/* Gets region of memory. */
-void *retro_get_memory_data(unsigned id);
-size_t retro_get_memory_size(unsigned id);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif

+ 461 - 0
platform/libretro/libretro_core_options.h

@@ -0,0 +1,461 @@
+#ifndef LIBRETRO_CORE_OPTIONS_H__
+#define LIBRETRO_CORE_OPTIONS_H__
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <libretro.h>
+#include <retro_inline.h>
+
+#ifndef HAVE_NO_LANGEXTRA
+#include "libretro_core_options_intl.h"
+#endif
+
+/*
+ ********************************
+ * VERSION: 1.3
+ ********************************
+ *
+ * - 1.3: Move translations to libretro_core_options_intl.h
+ *        - libretro_core_options_intl.h includes BOM and utf-8
+ *          fix for MSVC 2010-2013
+ *        - Added HAVE_NO_LANGEXTRA flag to disable translations
+ *          on platforms/compilers without BOM support
+ * - 1.2: Use core options v1 interface when
+ *        RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION is >= 1
+ *        (previously required RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION == 1)
+ * - 1.1: Support generation of core options v0 retro_core_option_value
+ *        arrays containing options with a single value
+ * - 1.0: First commit
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ ********************************
+ * Core Option Definitions
+ ********************************
+*/
+
+/* RETRO_LANGUAGE_ENGLISH */
+
+/* Default language:
+ * - All other languages must include the same keys and values
+ * - Will be used as a fallback in the event that frontend language
+ *   is not available
+ * - Will be used as a fallback for any missing entries in
+ *   frontend language definition */
+
+struct retro_core_option_definition option_defs_us[] = {
+   {
+      "picodrive_input1",
+      "Input device 1",
+      "Choose which kind of controller is plugged in slot 1.",
+      {
+         { "3 button pad", "3 Button Pad" },
+         { "6 button pad", "6 Button Pad" },
+         { "None", NULL },
+         { NULL, NULL },
+      },
+      "3 button pad"
+   },
+   {
+      "picodrive_input2",
+      "Input device 2",
+      "Choose which kind of controller is plugged in slot 2.",
+      {
+         { "3 button pad", NULL },
+         { "6 button pad", NULL },
+         { "None", NULL },
+         { NULL, NULL },
+      },
+      "3 button pad"
+   },
+   {
+      "picodrive_sprlim",
+      "No sprite limit",
+      "Enable this to remove the sprite limit.",
+      {
+         { "disabled", NULL },
+         { "enabled",  NULL },
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_ramcart",
+      "MegaCD RAM cart",
+      "Emulate a MegaCD RAM cart, used for save game data. WARNING: When enabled, internal save data (BRAM) will be discarded.",
+      {
+         { "disabled", NULL },
+         { "enabled",  NULL },
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_region",
+      "Region",
+      "Force a specific region.",
+      {
+         { "Auto",       NULL },
+         { "Japan NTSC", NULL },
+         { "Japan PAL",  NULL },
+         { "US",         NULL },
+         { "Europe",     NULL },
+         { NULL, NULL },
+      },
+      "Auto"
+   },
+   {
+      "picodrive_aspect",
+      "Core-provided aspect ratio",
+      "Choose the core-provided aspect ratio. RetroArch's aspect ratio must be set to Core provided in the Video settings.",
+      {
+         { "PAR", NULL },
+         { "4/3", NULL },
+         { "CRT", NULL },
+         { NULL, NULL },
+      },
+      "PAR"
+   },
+   {
+      "picodrive_overscan",
+      "Show Overscan",
+      "Crop out the potentially random glitchy video output that would have been hidden by the bezel around the edge of a standard-definition television screen.",
+      {
+         { "disabled", NULL },
+         { "enabled",  NULL },
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_overclk68k",
+      "68K Overclock",
+      "Overclock the emulated 68K chip.",
+      {
+         { "disabled", NULL },
+         { "+25%",     NULL },
+         { "+50%",     NULL },
+         { "+75%",     NULL },
+         { "+100%",    NULL },
+         { "+200%",    NULL },
+         { "+400%",    NULL },
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+#ifdef DRC_SH2
+   {
+      "picodrive_drc",
+      "Dynamic recompilers",
+      "Enable dynamic recompilers which help to improve performance. Less accurate than interpreter CPU cores, but much faster.",
+      {
+         { "enabled",  NULL },
+         { "disabled", NULL },
+         { NULL, NULL },
+      },
+      "enabled"
+   },
+#endif
+   {
+      "picodrive_audio_filter",
+      "Audio filter",
+      "Enable a low pass audio filter to better simulate the characteristic sound of a Model 1 Genesis. This option is ignored when running Master System and PICO titles. Only the Genesis and its add-on hardware (Sega CD, 32X) employed a physical low pass filter.",
+      {
+         { "disabled", NULL },
+         { "low-pass", "Low-Pass" },
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_lowpass_range",
+      "Low-pass filter %",
+      "Specify the cut-off frequency of the audio low pass filter. A higher value increases the perceived 'strength' of the filter, since a wider range of the high frequency spectrum is attenuated.",
+      {
+         { "5",  NULL },
+         { "10", NULL },
+         { "15", NULL },
+         { "20", NULL },
+         { "25", NULL },
+         { "30", NULL },
+         { "35", NULL },
+         { "40", NULL },
+         { "45", NULL },
+         { "50", NULL },
+         { "55", NULL },
+         { "60", NULL },
+         { "65", NULL },
+         { "70", NULL },
+         { "75", NULL },
+         { "80", NULL },
+         { "85", NULL },
+         { "90", NULL },
+         { "95", NULL },
+         { NULL, NULL },
+      },
+      "60"
+   },
+   {
+      "picodrive_frameskip",
+      "Frameskip",
+      "Skip frames to avoid audio buffer under-run (crackling). Improves performance at the expense of visual smoothness. 'Auto' skips frames when advised by the frontend. 'Manual' utilises the 'Frameskip Threshold (%)' setting.",
+      {
+         { "disabled", NULL },
+         { "auto",     "Auto" },
+         { "manual",   "Manual" },
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_frameskip_threshold",
+      "Frameskip Threshold (%)",
+      "When 'Frameskip' is set to 'Manual', specifies the audio buffer occupancy threshold (percentage) below which frames will be skipped. Higher values reduce the risk of crackling by causing frames to be dropped more frequently.",
+      {
+         { "15", NULL },
+         { "18", NULL },
+         { "21", NULL },
+         { "24", NULL },
+         { "27", NULL },
+         { "30", NULL },
+         { "33", NULL },
+         { "36", NULL },
+         { "39", NULL },
+         { "42", NULL },
+         { "45", NULL },
+         { "48", NULL },
+         { "51", NULL },
+         { "54", NULL },
+         { "57", NULL },
+         { "60", NULL },
+         { NULL, NULL },
+      },
+      "33"
+   },
+#if !defined(RENDER_GSKIT_PS2)
+   {
+      "picodrive_renderer",
+      "Renderer",
+      "Fast renderer can't render any mid-frame image changes so it is useful only for some games.",
+      {
+         { "accurate", "Accurate" },
+         { "fast",     "Fast" },
+         { NULL, NULL },
+      },
+      "accurate"
+   },
+#endif
+   {
+      "picodrive_sound_rate",
+      "Sound quality",
+      "Sound quality (in Hz). A lower value may increase performance.",
+      {
+         { "16000", NULL },
+         { "22050", NULL },
+         { "32000", NULL },
+         { "44100", NULL },
+         { NULL, NULL },
+      },
+      "44100"
+   },
+   { NULL, NULL, NULL, {{0}}, NULL },
+};
+
+/*
+ ********************************
+ * Language Mapping
+ ********************************
+*/
+
+#ifndef HAVE_NO_LANGEXTRA
+struct retro_core_option_definition *option_defs_intl[RETRO_LANGUAGE_LAST] = {
+   option_defs_us, /* RETRO_LANGUAGE_ENGLISH */
+   NULL,           /* RETRO_LANGUAGE_JAPANESE */
+   NULL,           /* RETRO_LANGUAGE_FRENCH */
+   NULL,           /* RETRO_LANGUAGE_SPANISH */
+   NULL,           /* RETRO_LANGUAGE_GERMAN */
+   NULL,           /* RETRO_LANGUAGE_ITALIAN */
+   NULL,           /* RETRO_LANGUAGE_DUTCH */
+   NULL,           /* RETRO_LANGUAGE_PORTUGUESE_BRAZIL */
+   NULL,           /* RETRO_LANGUAGE_PORTUGUESE_PORTUGAL */
+   NULL,           /* RETRO_LANGUAGE_RUSSIAN */
+   NULL,           /* RETRO_LANGUAGE_KOREAN */
+   NULL,           /* RETRO_LANGUAGE_CHINESE_TRADITIONAL */
+   NULL,           /* RETRO_LANGUAGE_CHINESE_SIMPLIFIED */
+   NULL,           /* RETRO_LANGUAGE_ESPERANTO */
+   NULL,           /* RETRO_LANGUAGE_POLISH */
+   NULL,           /* RETRO_LANGUAGE_VIETNAMESE */
+   NULL,           /* RETRO_LANGUAGE_ARABIC */
+   NULL,           /* RETRO_LANGUAGE_GREEK */
+   option_defs_tr, /* RETRO_LANGUAGE_TURKISH */
+};
+#endif
+
+/*
+ ********************************
+ * Functions
+ ********************************
+*/
+
+/* Handles configuration/setting of core options.
+ * Should be called as early as possible - ideally inside
+ * retro_set_environment(), and no later than retro_load_game()
+ * > We place the function body in the header to avoid the
+ *   necessity of adding more .c files (i.e. want this to
+ *   be as painless as possible for core devs)
+ */
+
+static INLINE void libretro_set_core_options(retro_environment_t environ_cb)
+{
+   unsigned version = 0;
+
+   if (!environ_cb)
+      return;
+
+   if (environ_cb(RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION, &version) && (version >= 1))
+   {
+#ifndef HAVE_NO_LANGEXTRA
+      struct retro_core_options_intl core_options_intl;
+      unsigned language = 0;
+
+      core_options_intl.us    = option_defs_us;
+      core_options_intl.local = NULL;
+
+      if (environ_cb(RETRO_ENVIRONMENT_GET_LANGUAGE, &language) &&
+          (language < RETRO_LANGUAGE_LAST) && (language != RETRO_LANGUAGE_ENGLISH))
+         core_options_intl.local = option_defs_intl[language];
+
+      environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS_INTL, &core_options_intl);
+#else
+      environ_cb(RETRO_ENVIRONMENT_SET_CORE_OPTIONS, &option_defs_us);
+#endif
+   }
+   else
+   {
+      size_t i;
+      size_t num_options               = 0;
+      struct retro_variable *variables = NULL;
+      char **values_buf                = NULL;
+
+      /* Determine number of options */
+      while (true)
+      {
+         if (option_defs_us[num_options].key)
+            num_options++;
+         else
+            break;
+      }
+
+      /* Allocate arrays */
+      variables  = (struct retro_variable *)calloc(num_options + 1, sizeof(struct retro_variable));
+      values_buf = (char **)calloc(num_options, sizeof(char *));
+
+      if (!variables || !values_buf)
+         goto error;
+
+      /* Copy parameters from option_defs_us array */
+      for (i = 0; i < num_options; i++)
+      {
+         const char *key                        = option_defs_us[i].key;
+         const char *desc                       = option_defs_us[i].desc;
+         const char *default_value              = option_defs_us[i].default_value;
+         struct retro_core_option_value *values = option_defs_us[i].values;
+         size_t buf_len                         = 3;
+         size_t default_index                   = 0;
+
+         values_buf[i] = NULL;
+
+         if (desc)
+         {
+            size_t num_values = 0;
+
+            /* Determine number of values */
+            while (true)
+            {
+               if (values[num_values].value)
+               {
+                  /* Check if this is the default value */
+                  if (default_value)
+                     if (strcmp(values[num_values].value, default_value) == 0)
+                        default_index = num_values;
+
+                  buf_len += strlen(values[num_values].value);
+                  num_values++;
+               }
+               else
+                  break;
+            }
+
+            /* Build values string */
+            if (num_values > 0)
+            {
+               size_t j;
+
+               buf_len += num_values - 1;
+               buf_len += strlen(desc);
+
+               values_buf[i] = (char *)calloc(buf_len, sizeof(char));
+               if (!values_buf[i])
+                  goto error;
+
+               strcpy(values_buf[i], desc);
+               strcat(values_buf[i], "; ");
+
+               /* Default value goes first */
+               strcat(values_buf[i], values[default_index].value);
+
+               /* Add remaining values */
+               for (j = 0; j < num_values; j++)
+               {
+                  if (j != default_index)
+                  {
+                     strcat(values_buf[i], "|");
+                     strcat(values_buf[i], values[j].value);
+                  }
+               }
+            }
+         }
+
+         variables[i].key   = key;
+         variables[i].value = values_buf[i];
+      }
+
+      /* Set variables */
+      environ_cb(RETRO_ENVIRONMENT_SET_VARIABLES, variables);
+
+error:
+
+      /* Clean up */
+      if (values_buf)
+      {
+         for (i = 0; i < num_options; i++)
+         {
+            if (values_buf[i])
+            {
+               free(values_buf[i]);
+               values_buf[i] = NULL;
+            }
+         }
+
+         free(values_buf);
+         values_buf = NULL;
+      }
+
+      if (variables)
+      {
+         free(variables);
+         variables = NULL;
+      }
+   }
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

+ 198 - 0
platform/libretro/libretro_core_options_intl.h

@@ -0,0 +1,198 @@
+#ifndef LIBRETRO_CORE_OPTIONS_INTL_H__
+#define LIBRETRO_CORE_OPTIONS_INTL_H__
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1500 && _MSC_VER < 1900)
+/* https://support.microsoft.com/en-us/kb/980263 */
+#pragma execution_character_set("utf-8")
+#pragma warning(disable:4566)
+#endif
+
+#include <libretro.h>
+
+/*
+ ********************************
+ * VERSION: 1.3
+ ********************************
+ *
+ * - 1.3: Move translations to libretro_core_options_intl.h
+ *        - libretro_core_options_intl.h includes BOM and utf-8
+ *          fix for MSVC 2010-2013
+ *        - Added HAVE_NO_LANGEXTRA flag to disable translations
+ *          on platforms/compilers without BOM support
+ * - 1.2: Use core options v1 interface when
+ *        RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION is >= 1
+ *        (previously required RETRO_ENVIRONMENT_GET_CORE_OPTIONS_VERSION == 1)
+ * - 1.1: Support generation of core options v0 retro_core_option_value
+ *        arrays containing options with a single value
+ * - 1.0: First commit
+*/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ ********************************
+ * Core Option Definitions
+ ********************************
+*/
+
+/* RETRO_LANGUAGE_JAPANESE */
+
+/* RETRO_LANGUAGE_FRENCH */
+
+/* RETRO_LANGUAGE_SPANISH */
+
+/* RETRO_LANGUAGE_GERMAN */
+
+/* RETRO_LANGUAGE_ITALIAN */
+
+/* RETRO_LANGUAGE_DUTCH */
+
+/* RETRO_LANGUAGE_PORTUGUESE_BRAZIL */
+
+/* RETRO_LANGUAGE_PORTUGUESE_PORTUGAL */
+
+/* RETRO_LANGUAGE_RUSSIAN */
+
+/* RETRO_LANGUAGE_KOREAN */
+
+/* RETRO_LANGUAGE_CHINESE_TRADITIONAL */
+
+/* RETRO_LANGUAGE_CHINESE_SIMPLIFIED */
+
+/* RETRO_LANGUAGE_ESPERANTO */
+
+/* RETRO_LANGUAGE_POLISH */
+
+/* RETRO_LANGUAGE_VIETNAMESE */
+
+/* RETRO_LANGUAGE_ARABIC */
+
+/* RETRO_LANGUAGE_GREEK */
+
+/* RETRO_LANGUAGE_TURKISH */
+
+struct retro_core_option_definition option_defs_tr[] = {
+   {
+      "picodrive_input1",
+      "Giriş cihazı 1",
+      "Hangi tür kontrolör'ün yuva 1'e takılı olduğunu seçin.",
+      {
+         { "3 button pad", NULL },
+         { "6 button pad", NULL },
+         { "None",         "hiçbiri" },
+         { NULL, NULL },
+      },
+      "3 button pad"
+   },
+   {
+      "picodrive_input2",
+      "Giriş cihazı 2",
+      "Hangi tür kontrolör'ün yuva 2'e takılı olduğunu seçin",
+      {
+         { "3 button pad", NULL },
+         { "6 button pad", NULL },
+         { "None",         "hiçbiri" },
+         { NULL, NULL },
+      },
+      "3 button pad"
+   },
+   {
+      "picodrive_sprlim",
+      "Sprite sınırı yok",
+      "Sprite sınırını kaldırmak için bunu etkinleştirin.",
+      {
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_ramcart",
+      "Sega CD RAM Kartuşu",
+      "Oyun verilerini kaydetmek için kullanılan bir MegaCD RAM kartuşunu taklit edin.",
+      {
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_region",
+      "Bölge",
+      "Belirli bir bölgeye zorlayın.",
+      {
+         { "Auto",       "Otomatik" },
+         { "Japan NTSC", "Japonya NTSC" },
+         { "Japan PAL",  "Japonya PAL" },
+         { "US",         NULL },
+         { "Europe",     "Avrupa" },
+         { NULL, NULL },
+      },
+      "Auto"
+   },
+   {
+      "picodrive_aspect",
+      "Core tarafından belirlenen en boy oranı",
+      "Core tarafından sağlanan en boy oranını seçin. RetroArch'ın en boy oranı, Video ayarlarında sağlanan Core olarak ayarlanmalıdır.",
+      {
+         { NULL, NULL },
+      },
+      "PAR"
+   },
+   {
+      "picodrive_overscan",
+      "Tarama Taşmasını Göster",
+      "Standart tanımlı bir televizyon ekranının kenar çevresinde, çerçeve tarafından gizlenmiş olabilecek rastgele video çıkışını kesin.",
+      {
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_overclk68k",
+      "68K Hızaşırtma",
+      "Öykünülmüş 68K yongasına Hızaşırtma uygulayın.",
+      {
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+#ifdef DRC_SH2
+   {
+      "picodrive_drc",
+      "Dinamik Yeniden Derleyici",
+      "Performansı artırmaya yardımcı olan dinamik yeniden derleyicileri etkinleştirin. Tercüman CPU çekirdeğinden daha az hassas, ancak çok daha hızlıdır.",
+      {
+         { NULL, NULL },
+      },
+      "enabled"
+   },
+#endif
+   {
+      "picodrive_audio_filter",
+      "Ses Filtresi",
+      "Model 1 Genesis'in karakteristik sesini daha iyi simüle etmek için düşük geçişli bir ses filtresini etkinleştirin. Master System ve PICO başlıkları kullanılırken bu seçenek yoksayılır. Sadece Genesis ve eklenti donanımı (Sega CD, 32X) fiziksel düşük geçiş filtresi kullanır.",
+      {
+         { "disabled", "devre dışı" },
+         { "low-pass", "alçak geçiş" },
+         { NULL, NULL },
+      },
+      "disabled"
+   },
+   {
+      "picodrive_lowpass_range",
+      "Alçak geçiş filtresi %",
+      "Ses düşük geçiş filtresinin kesme frekansını belirtin. Daha yüksek bir değer, yüksek frekans spektrumunun daha geniş bir aralığı azaltıldığı için filtrenin algılanan gücünü arttırır.",
+      {
+         { NULL, NULL },
+      },
+      "60"
+   },
+   { NULL, NULL, NULL, {{0}}, NULL },
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

+ 5 - 0
platform/libretro/link.T

@@ -0,0 +1,5 @@
+{
+   global: retro_*;
+   local: *;
+};
+

+ 1799 - 0
platform/ps2/Draw_mips_r5900.s

@@ -0,0 +1,1799 @@
+# vim:filetype=mips
+
+# several drawing related functions for MIPS R5900. Based on Draw_amips.s by Notaz.
+# (c) Copyright 2007, Grazvydas "notaz" Ignotas
+# All Rights Reserved
+
+.set noreorder # don't reorder any instructions
+.set noat      # don't use $at. $at is used for substitute macro instructions (and some replacement code).
+
+.text
+.align 4
+
+.macro ext dest,src,pos,size
+	srl	\dest, \src, \pos
+	li	$at, ((1 << \size) - 1)
+	and	\dest, $at
+.endm
+
+.macro rotr dest,src,shift
+	srl	$at, \src, \shift
+	sll	\dest, \src, (32-\shift)
+	or	\dest, $at
+.endm
+
+
+# Note: Assumes that n is a multiple of 16.
+# void blockcpy_or(void *dst, void *src, size_t n, int pat)
+.global blockcpy_or
+.ent blockcpy_or
+blockcpy_or:
+	#Spread my beauties! Multiply and divide! :D
+	sll $t0, $a3, 8
+	or $a3, $a3, $t0
+	pcpyld $a3, $a3
+	pcpyh $a3, $a3
+
+blockcpy_or_loop:
+	ld $t0, 8($a1)
+	ld $t1, 0($a1)
+	pcpyld $t0, $t0, $t1
+#	lq $t0, 0($a1)	#This won't work because the data may not be aligned to a 128-bit address (And unless the source code of Picodrive is modified for that purpose, use two dword loads instead). :(
+
+	por $t0, $t0, $a3
+	sq $t0, 0($a0)
+
+	addiu $a2, $a2, -16
+	addiu $a0, $a0, 16
+	bgtz $a2, blockcpy_or_loop
+	addiu $a1, $a1, 16
+
+	jr $ra
+	nop
+.end blockcpy_or
+
+# void amips_clut(unsigned short *dst, unsigned char *src, unsigned short *pal, int count)
+
+.global amips_clut
+
+amips_clut:
+amips_clut_loop:
+    lbu     $t0, 0($a1)           # tried lw here, no improvement noticed
+    lbu     $t1, 1($a1)
+    lbu     $t2, 2($a1)
+    lbu     $t3, 3($a1)
+    sll     $t0, 1
+    sll     $t1, 1
+    sll     $t2, 1
+    sll     $t3, 1
+    addu    $t0, $a2
+    addu    $t1, $a2
+    addu    $t2, $a2
+    addu    $t3, $a2
+    lhu     $t0, 0($t0)
+    lhu     $t1, 0($t1)
+    lhu     $t2, 0($t2)
+    lhu     $t3, 0($t3)
+	sll $t1, $t1, 16
+	or $t0, $t0, $t1
+	sll $t3, $t3, 16
+	or $t2, $t2, $t3
+    sw      $t0, 0($a0)
+    sw      $t2, 4($a0)
+    addiu   $a0, 8
+    addiu   $a3, -4
+    bnez    $a3, amips_clut_loop
+    addiu   $a1, 4
+    jr      $ra
+    nop
+
+
+.global amips_clut_6bit
+
+amips_clut_6bit:
+amips_clut_loop6:
+	lw		$t0, 0($a1)
+	sll $t4, $t0, 1
+	andi $t4, $t4, 0x7E
+	srl $t5, $t0, 7
+	andi $t5, $t5, 0x7E
+	srl $t6, $t0, 15
+	andi $t6, $t6, 0x7E
+	srl $t7, $t0, 23
+	andi $t7, $t7, 0x7E
+    addu    $t0, $t4, $a2
+    addu    $t1, $t5, $a2
+    addu    $t2, $t6, $a2
+    addu    $t3, $t7, $a2
+    lhu     $t0, 0($t0)
+    lhu     $t1, 0($t1)
+    lhu     $t2, 0($t2)
+    lhu     $t3, 0($t3)
+	sll $t1, $t1, 16
+	or $t0, $t0, $t1
+	sll $t3, $t3, 16
+	or $t2, $t2, $t3
+    sw      $t0, 0($a0)
+    sw      $t2, 4($a0)
+    addiu   $a0, 8
+    addiu   $a3, -4
+    bnez    $a3, amips_clut_loop6
+    addiu   $a1, 4
+    jr      $ra
+    nop
+
+# $a0 - pd, $a1 - tile word, $a2 - pal
+# ext rt, rs, pos, size  // Extract size bits from position pos in rs and store in rt 
+
+.macro TilePixelPrep shift dreg offs
+.if \shift
+    ext     \dreg, $a1, \shift, 4
+.else
+    andi    \dreg, $a1, 0xf
+.endif
+.if \offs
+    sltu    $t8, $0, \dreg
+	li		$at, ~(1<<\offs)
+	and		$t9, $t9, $at
+	andi	$at, $t8, 1
+	sll		$at, $at, \offs
+	or		$t9, $t9, $at
+.else
+    sltu    $t9, $0, \dreg
+.endif
+.endm
+
+.macro TileStartCode
+    sll     $a1, $a1, 1
+    lui     $t1, %hi(Pico+0x10000)
+    addu    $a1, $a1, $t1
+    lw      $a1, %lo(Pico+0x10000)($a1)  # Pico.vram + addr
+    beqz    $a1, TileEmpty
+    rotr    $t1, $a1, 4	#Leaving this macro here is fine because TileEmpty doesn't use the result of this operation.
+    beq     $t1, $a1, SingleColor
+    and     $v0, $0                      # not empty tile
+.endm
+
+.macro TileEndCode
+    xori    $t8, $t9, 0xff
+    beqz    $t8, tile11111111            # common case
+	lui     $v1, %hi(HighCol)
+	addiu   $v1, %lo(HighCol)
+    lui     $t8, %hi(TileTable)
+	li		$at, 0xFFFFFC03
+	and		$t8, $t8, $at
+	andi 	$at, $t9, 0xFF
+	sll		$at, $at, 2
+	or		$t8, $t8, $at
+    lw      $t8, %lo(TileTable)($t8)
+    jr      $t8
+    addu    $a0, $v1
+.endm
+
+
+.global TileNorm
+
+TileNorm:
+    TileStartCode
+    TilePixelPrep 12, $t0, 0
+    TilePixelPrep  8, $t1, 1
+    TilePixelPrep  4, $t2, 2
+    TilePixelPrep  0, $t3, 3
+    TilePixelPrep 28, $t4, 4
+    TilePixelPrep 24, $t5, 5
+    TilePixelPrep 20, $t6, 6
+    TilePixelPrep 16, $t7, 7
+    TileEndCode
+
+
+.global TileFlip
+
+TileFlip:
+    TileStartCode
+    TilePixelPrep 16, $t0, 0
+    TilePixelPrep 20, $t1, 1
+    TilePixelPrep 24, $t2, 2
+    TilePixelPrep 28, $t3, 3
+    TilePixelPrep  0, $t4, 4
+    TilePixelPrep  4, $t5, 5
+    TilePixelPrep  8, $t6, 6
+    TilePixelPrep 12, $t7, 7
+    TileEndCode
+
+
+SingleColor:
+    la      $t9, HighCol
+    andi    $t0, $a1, 0xf
+    or      $t0, $t0, $a2
+    addu    $a0, $t9
+    sb      $t0, 0($a0)
+    sb      $t0, 1($a0)
+    sb      $t0, 2($a0)
+    sb      $t0, 3($a0)
+    sb      $t0, 4($a0)
+    sb      $t0, 5($a0)
+    sb      $t0, 6($a0)
+    jr      $ra
+    sb      $t0, 7($a0)
+
+TileEmpty:
+    jr      $ra
+    or      $v0, $0, 1                   # empty tile
+
+tile11111111:
+    la      $v1, HighCol
+    or      $t0, $t0, $a2
+    addu    $a0, $v1
+    sb      $t0, 0($a0)
+tile11111110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11111100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile11111000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile11110000:
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+tile11100000:
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+tile11000000:
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+tile10000000:
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11111101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11111011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11111010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11111001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11110111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11110110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11110100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11110101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11110011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11110010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11110001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11101111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11101110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11101100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile11101000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11101101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11101011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11101010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11101001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11100111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11100110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11100100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11100101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11100011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11100010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11100001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11011111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11011110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11011100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile11011000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile11010000:
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11011101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11011011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11011010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11011001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11010111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11010110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11010100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11010101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11010011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11010010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11010001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11001111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11001110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11001100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile11001000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11001101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11001011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11001010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11001001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11000111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11000110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile11000100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11000101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11000011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile11000010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile11000001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t6, $t6, $a2
+    sb      $t6, 6($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10111111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10111110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10111100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile10111000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile10110000:
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+tile10100000:
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10111101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10111011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10111010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10111001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10110111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10110110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10110100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10110101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10110011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10110010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10110001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10101111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10101110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10101100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile10101000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10101101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10101011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10101010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10101001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10100111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10100110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10100100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10100101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10100011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10100010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10100001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10011111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10011110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10011100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile10011000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile10010000:
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10011101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10011011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10011010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10011001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10010111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10010110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10010100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10010101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10010011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10010010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10010001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10001111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10001110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10001100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile10001000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10001101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10001011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10001010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10001001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10000111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10000110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile10000100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10000101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10000011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile10000010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile10000001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t7, $t7, $a2
+    jr      $ra
+    sb      $t7, 7($a0)
+tile01111111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01111110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01111100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile01111000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile01110000:
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+tile01100000:
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+tile01000000:
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile00000000:
+tile01111101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01111011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01111010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01111001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01110111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01110110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01110100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01110101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01110011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01110010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01110001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01101111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01101110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01101100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile01101000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01101101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01101011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01101010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01101001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01100111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01100110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01100100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01100101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01100011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01100010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01100001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t5, $t5, $a2
+    sb      $t5, 5($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01011111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01011110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01011100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile01011000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile01010000:
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01011101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01011011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01011010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01011001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01010111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01010110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01010100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01010101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01010011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01010010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01010001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01001111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01001110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01001100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile01001000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01001101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01001011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01001010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01001001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01000111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01000110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile01000100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01000101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01000011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile01000010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile01000001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t6, $t6, $a2
+    jr      $ra
+    sb      $t6, 6($a0)
+tile00111111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00111110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00111100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile00111000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile00110000:
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+tile00100000:
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00111101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00111011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00111010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00111001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00110111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00110110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00110100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00110101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00110011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00110010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00110001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    sb      $t4, 4($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00101111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00101110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00101100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile00101000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00101101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00101011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00101010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00101001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00100111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00100110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00100100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00100101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00100011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00100010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00100001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t5, $t5, $a2
+    jr      $ra
+    sb      $t5, 5($a0)
+tile00011111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00011110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00011100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile00011000:
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+tile00010000:
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00011101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00011011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00011010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00011001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    sb      $t3, 3($a0)
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00010111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00010110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00010100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00010101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00010011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00010010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00010001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t4, $t4, $a2
+    jr      $ra
+    sb      $t4, 4($a0)
+tile00001111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00001110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00001100:
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+tile00001000:
+    or      $t3, $t3, $a2
+    jr      $ra
+    sb      $t3, 3($a0)
+tile00001101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    sb      $t2, 2($a0)
+    or      $t3, $t3, $a2
+    jr      $ra
+    sb      $t3, 3($a0)
+tile00001011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00001010:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+    or      $t3, $t3, $a2
+    jr      $ra
+    sb      $t3, 3($a0)
+tile00001001:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t3, $t3, $a2
+    jr      $ra
+    sb      $t3, 3($a0)
+tile00000111:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00000110:
+    or      $t1, $t1, $a2
+    sb      $t1, 1($a0)
+tile00000100:
+    or      $t2, $t2, $a2
+    jr      $ra
+    sb      $t2, 2($a0)
+tile00000101:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+    or      $t2, $t2, $a2
+    jr      $ra
+    sb      $t2, 2($a0)
+tile00000011:
+    or      $t0, $t0, $a2
+    sb      $t0, 0($a0)
+tile00000010:
+    or      $t1, $t1, $a2
+    jr      $ra
+    sb      $t1, 1($a0)
+tile00000001:
+    or      $t0, $t0, $a2
+    jr      $ra
+    sb      $t0, 0($a0)
+
+.data
+.align 4
+
+TileTable:
+  .long 000000000000, tile00000001, tile00000010, tile00000011, tile00000100, tile00000101, tile00000110, tile00000111
+  .long tile00001000, tile00001001, tile00001010, tile00001011, tile00001100, tile00001101, tile00001110, tile00001111
+  .long tile00010000, tile00010001, tile00010010, tile00010011, tile00010100, tile00010101, tile00010110, tile00010111
+  .long tile00011000, tile00011001, tile00011010, tile00011011, tile00011100, tile00011101, tile00011110, tile00011111
+  .long tile00100000, tile00100001, tile00100010, tile00100011, tile00100100, tile00100101, tile00100110, tile00100111
+  .long tile00101000, tile00101001, tile00101010, tile00101011, tile00101100, tile00101101, tile00101110, tile00101111
+  .long tile00110000, tile00110001, tile00110010, tile00110011, tile00110100, tile00110101, tile00110110, tile00110111
+  .long tile00111000, tile00111001, tile00111010, tile00111011, tile00111100, tile00111101, tile00111110, tile00111111
+  .long tile01000000, tile01000001, tile01000010, tile01000011, tile01000100, tile01000101, tile01000110, tile01000111
+  .long tile01001000, tile01001001, tile01001010, tile01001011, tile01001100, tile01001101, tile01001110, tile01001111
+  .long tile01010000, tile01010001, tile01010010, tile01010011, tile01010100, tile01010101, tile01010110, tile01010111
+  .long tile01011000, tile01011001, tile01011010, tile01011011, tile01011100, tile01011101, tile01011110, tile01011111
+  .long tile01100000, tile01100001, tile01100010, tile01100011, tile01100100, tile01100101, tile01100110, tile01100111
+  .long tile01101000, tile01101001, tile01101010, tile01101011, tile01101100, tile01101101, tile01101110, tile01101111
+  .long tile01110000, tile01110001, tile01110010, tile01110011, tile01110100, tile01110101, tile01110110, tile01110111
+  .long tile01111000, tile01111001, tile01111010, tile01111011, tile01111100, tile01111101, tile01111110, tile01111111
+  .long tile10000000, tile10000001, tile10000010, tile10000011, tile10000100, tile10000101, tile10000110, tile10000111
+  .long tile10001000, tile10001001, tile10001010, tile10001011, tile10001100, tile10001101, tile10001110, tile10001111
+  .long tile10010000, tile10010001, tile10010010, tile10010011, tile10010100, tile10010101, tile10010110, tile10010111
+  .long tile10011000, tile10011001, tile10011010, tile10011011, tile10011100, tile10011101, tile10011110, tile10011111
+  .long tile10100000, tile10100001, tile10100010, tile10100011, tile10100100, tile10100101, tile10100110, tile10100111
+  .long tile10101000, tile10101001, tile10101010, tile10101011, tile10101100, tile10101101, tile10101110, tile10101111
+  .long tile10110000, tile10110001, tile10110010, tile10110011, tile10110100, tile10110101, tile10110110, tile10110111
+  .long tile10111000, tile10111001, tile10111010, tile10111011, tile10111100, tile10111101, tile10111110, tile10111111
+  .long tile11000000, tile11000001, tile11000010, tile11000011, tile11000100, tile11000101, tile11000110, tile11000111
+  .long tile11001000, tile11001001, tile11001010, tile11001011, tile11001100, tile11001101, tile11001110, tile11001111
+  .long tile11010000, tile11010001, tile11010010, tile11010011, tile11010100, tile11010101, tile11010110, tile11010111
+  .long tile11011000, tile11011001, tile11011010, tile11011011, tile11011100, tile11011101, tile11011110, tile11011111
+  .long tile11100000, tile11100001, tile11100010, tile11100011, tile11100100, tile11100101, tile11100110, tile11100111
+  .long tile11101000, tile11101001, tile11101010, tile11101011, tile11101100, tile11101101, tile11101110, tile11101111
+  .long tile11110000, tile11110001, tile11110010, tile11110011, tile11110100, tile11110101, tile11110110, tile11110111
+  .long tile11111000, tile11111001, tile11111010, tile11111011, tile11111100, tile11111101, tile11111110, tile11111111
+
+

+ 847 - 0
platform/ps2/Memory_mips_r5900.s

@@ -0,0 +1,847 @@
+# vim:filetype=mips
+
+# memory handlers with banking support for SSF II - The New Challengers
+# mostly based on Gens code
+# For the MIPS R5900. Based on Memory_amips.s by Notaz.
+
+# (c) Copyright 2007, Grazvydas "notaz" Ignotas
+# All Rights Reserved
+
+
+.set noreorder
+.set noat	#$at is currently used in the substitute macro instructions (and some replacement code).
+
+.text
+.align 4
+
+.macro ext dest,src,pos,size
+	srl	\dest, \src, \pos
+	li	$at, ((1 << \size) - 1)
+	and	\dest, $at
+.endm
+
+# default jump tables
+
+m_read8_def_table:
+    .long   m_read8_rom0    # 0x000000 - 0x07FFFF
+    .long   m_read8_rom1    # 0x080000 - 0x0FFFFF
+    .long   m_read8_rom2    # 0x100000 - 0x17FFFF
+    .long   m_read8_rom3    # 0x180000 - 0x1FFFFF
+    .long   m_read8_rom4    # 0x200000 - 0x27FFFF
+    .long   m_read8_rom5    # 0x280000 - 0x2FFFFF
+    .long   m_read8_rom6    # 0x300000 - 0x37FFFF
+    .long   m_read8_rom7    # 0x380000 - 0x3FFFFF
+    .long   m_read8_rom8    # 0x400000 - 0x47FFFF - for all those large ROM hacks
+    .long   m_read8_rom9    # 0x480000 - 0x4FFFFF
+    .long   m_read8_romA    # 0x500000 - 0x57FFFF
+    .long   m_read8_romB    # 0x580000 - 0x5FFFFF
+    .long   m_read8_romC    # 0x600000 - 0x67FFFF
+    .long   m_read8_romD    # 0x680000 - 0x6FFFFF
+    .long   m_read8_romE    # 0x700000 - 0x77FFFF
+    .long   m_read8_romF    # 0x780000 - 0x7FFFFF
+    .long   m_read8_rom10   # 0x800000 - 0x87FFFF
+    .long   m_read8_rom11   # 0x880000 - 0x8FFFFF
+    .long   m_read8_rom12   # 0x900000 - 0x97FFFF
+    .long   m_read8_rom13   # 0x980000 - 0x9FFFFF
+    .long   m_read8_misc    # 0xA00000 - 0xA7FFFF
+    .long   m_read_null     # 0xA80000 - 0xAFFFFF
+    .long   m_read_null     # 0xB00000 - 0xB7FFFF
+    .long   m_read_null     # 0xB80000 - 0xBFFFFF
+    .long   m_read8_vdp     # 0xC00000 - 0xC7FFFF
+    .long   m_read8_vdp     # 0xC80000 - 0xCFFFFF
+    .long   m_read8_vdp     # 0xD00000 - 0xD7FFFF
+    .long   m_read8_vdp     # 0xD80000 - 0xDFFFFF
+    .long   m_read8_ram     # 0xE00000 - 0xE7FFFF
+    .long   m_read8_ram     # 0xE80000 - 0xEFFFFF
+    .long   m_read8_ram     # 0xF00000 - 0xF7FFFF
+    .long   m_read8_ram     # 0xF80000 - 0xFFFFFF
+
+m_read16_def_table:
+    .long   m_read16_rom0    # 0x000000 - 0x07FFFF
+    .long   m_read16_rom1    # 0x080000 - 0x0FFFFF
+    .long   m_read16_rom2    # 0x100000 - 0x17FFFF
+    .long   m_read16_rom3    # 0x180000 - 0x1FFFFF
+    .long   m_read16_rom4    # 0x200000 - 0x27FFFF
+    .long   m_read16_rom5    # 0x280000 - 0x2FFFFF
+    .long   m_read16_rom6    # 0x300000 - 0x37FFFF
+    .long   m_read16_rom7    # 0x380000 - 0x3FFFFF
+    .long   m_read16_rom8    # 0x400000 - 0x47FFFF
+    .long   m_read16_rom9    # 0x480000 - 0x4FFFFF
+    .long   m_read16_romA    # 0x500000 - 0x57FFFF
+    .long   m_read16_romB    # 0x580000 - 0x5FFFFF
+    .long   m_read16_romC    # 0x600000 - 0x67FFFF
+    .long   m_read16_romD    # 0x680000 - 0x6FFFFF
+    .long   m_read16_romE    # 0x700000 - 0x77FFFF
+    .long   m_read16_romF    # 0x780000 - 0x7FFFFF
+    .long   m_read16_rom10   # 0x800000 - 0x87FFFF
+    .long   m_read16_rom11   # 0x880000 - 0x8FFFFF
+    .long   m_read16_rom12   # 0x900000 - 0x97FFFF
+    .long   m_read16_rom13   # 0x980000 - 0x9FFFFF
+    .long   m_read16_misc    # 0xA00000 - 0xA7FFFF
+    .long   m_read_null      # 0xA80000 - 0xAFFFFF
+    .long   m_read_null      # 0xB00000 - 0xB7FFFF
+    .long   m_read_null      # 0xB80000 - 0xBFFFFF
+    .long   m_read16_vdp     # 0xC00000 - 0xC7FFFF
+    .long   m_read16_vdp     # 0xC80000 - 0xCFFFFF
+    .long   m_read16_vdp     # 0xD00000 - 0xD7FFFF
+    .long   m_read16_vdp     # 0xD80000 - 0xDFFFFF
+    .long   m_read16_ram     # 0xE00000 - 0xE7FFFF
+    .long   m_read16_ram     # 0xE80000 - 0xEFFFFF
+    .long   m_read16_ram     # 0xF00000 - 0xF7FFFF
+    .long   m_read16_ram     # 0xF80000 - 0xFFFFFF
+
+m_read32_def_table:
+    .long   m_read32_rom0    # 0x000000 - 0x07FFFF
+    .long   m_read32_rom1    # 0x080000 - 0x0FFFFF
+    .long   m_read32_rom2    # 0x100000 - 0x17FFFF
+    .long   m_read32_rom3    # 0x180000 - 0x1FFFFF
+    .long   m_read32_rom4    # 0x200000 - 0x27FFFF
+    .long   m_read32_rom5    # 0x280000 - 0x2FFFFF
+    .long   m_read32_rom6    # 0x300000 - 0x37FFFF
+    .long   m_read32_rom7    # 0x380000 - 0x3FFFFF
+    .long   m_read32_rom8    # 0x400000 - 0x47FFFF
+    .long   m_read32_rom9    # 0x480000 - 0x4FFFFF
+    .long   m_read32_romA    # 0x500000 - 0x57FFFF
+    .long   m_read32_romB    # 0x580000 - 0x5FFFFF
+    .long   m_read32_romC    # 0x600000 - 0x67FFFF
+    .long   m_read32_romD    # 0x680000 - 0x6FFFFF
+    .long   m_read32_romE    # 0x700000 - 0x77FFFF
+    .long   m_read32_romF    # 0x780000 - 0x7FFFFF
+    .long   m_read32_rom10   # 0x800000 - 0x87FFFF
+    .long   m_read32_rom11   # 0x880000 - 0x8FFFFF
+    .long   m_read32_rom12   # 0x900000 - 0x97FFFF
+    .long   m_read32_rom13   # 0x980000 - 0x9FFFFF
+    .long   m_read32_misc    # 0xA00000 - 0xA7FFFF
+    .long   m_read_null      # 0xA80000 - 0xAFFFFF
+    .long   m_read_null      # 0xB00000 - 0xB7FFFF
+    .long   m_read_null      # 0xB80000 - 0xBFFFFF
+    .long   m_read32_vdp     # 0xC00000 - 0xC7FFFF
+    .long   m_read32_vdp     # 0xC80000 - 0xCFFFFF
+    .long   m_read32_vdp     # 0xD00000 - 0xD7FFFF
+    .long   m_read32_vdp     # 0xD80000 - 0xDFFFFF
+    .long   m_read32_ram     # 0xE00000 - 0xE7FFFF
+    .long   m_read32_ram     # 0xE80000 - 0xEFFFFF
+    .long   m_read32_ram     # 0xF00000 - 0xF7FFFF
+    .long   m_read32_ram     # 0xF80000 - 0xFFFFFF
+
+
+# #############################################################################
+
+.bss
+.align 4
+
+# used tables
+m_read8_table:
+    .skip 32*4
+
+m_read16_table:
+    .skip 32*4
+
+m_read32_table:
+    .skip 32*4
+
+
+# #############################################################################
+
+.text
+.align 4
+
+.global PicoMemReset
+.global PicoRead8
+.global PicoRead16
+.global PicoRead32
+.global PicoWriteRomHW_SSF2
+
+.global m_read8_def_table
+.global m_read8_table
+
+.macro PicoMemResetCopyDef dst_table src_table
+    lui     $t0, %hi(\dst_table)
+    addiu   $t0, %lo(\dst_table)
+    lui     $t1, %hi(\src_table)
+    addiu   $t1, %lo(\src_table)
+    li      $t2, 32
+1:
+    lw      $t3, 0($t1)
+    sw      $t3, 0($t0)
+    addiu   $t2, -1
+    addiu   $t1, 4
+    nop	#Workaround for the R5900 short-loop bug.
+    bnez    $t2, 1b
+    addiu   $t0, 4
+.endm
+
+# $t4 = 4
+.macro PicoMemResetRomArea dst_table ar_label
+    lui     $t0, %hi(\dst_table)
+    addiu   $t0, %lo(\dst_table)
+    lui     $t1, %hi(\ar_label)
+    addiu   $t1, %lo(\ar_label)
+    li      $t2, 20
+1:
+    beq     $t2, $v1, 2f
+    addiu   $t2, -1
+    sll     $t3, $t2, 2
+    beq     $t2, $t4, 1b           # do not touch the SRAM area
+    addu    $t3, $t0
+    j       1b
+    sw      $t1, 0($t3)
+2:
+.endm
+
+
+PicoMemReset:
+    lui     $v1, %hi(Pico+0x22204)
+    lw      $v1, %lo(Pico+0x22204)($v1)  # romsize
+    lui     $t0, 8
+    addu    $v1, $t0
+    addiu   $v1, -1
+    srl     $v1, 19
+
+    PicoMemResetCopyDef m_read8_table  m_read8_def_table
+    PicoMemResetCopyDef m_read16_table m_read16_def_table
+    PicoMemResetCopyDef m_read32_table m_read32_def_table
+
+    # update memhandlers according to ROM size
+    li      $t4, 4
+    PicoMemResetRomArea m_read8_table  m_read8_above_rom
+    PicoMemResetRomArea m_read16_table m_read16_above_rom
+    PicoMemResetRomArea m_read32_table m_read32_above_rom
+
+    jr      $ra
+    nop
+
+# #############################################################################
+
+.macro PicoReadJump table
+    lui     $t0, %hi(\table)
+    srl     $t1, $a0, 19
+	li		$at, 0xFFFFFF83
+	and		$t0, $t0, $at
+	andi	$t1, $t1, 0x1F
+	sll		$t1, $t1, 2
+	or		$t0, $t0, $t1
+
+    lw      $t0, %lo(\table)($t0)
+	sll		$a0, $a0, 8
+    jr      $t0
+	srl		$a0, $a0, 8
+.endm
+
+PicoRead8: # u32 a
+    PicoReadJump m_read8_table
+
+PicoRead16: # u32 a
+    PicoReadJump m_read16_table
+
+PicoRead32: # u32 a
+    PicoReadJump m_read32_table
+
+# #############################################################################
+
+m_read_null:
+    jr      $ra
+    li      $v0, 0
+
+m_read_neg1:
+    jr      $ra
+    addiu   $v0, $0, 0xffff
+
+# loads &Pico.rom to $t3
+.macro m_read_rom_try_sram is200000 size
+    lui     $t2, %hi(SRam)
+    addiu   $t2, %lo(SRam)
+    lui     $t3, %hi(Pico+0x22200)
+    lw      $t1, 8($t2)     # SRam.end
+.if \is200000
+	sll		$a0, $a0, 13
+	srl		$a0, $a0, 13
+    lui     $t4, 0x20
+    or      $a0, $t4
+.endif
+    subu    $t4, $a0, $t1
+    bgtz    $t4, 1f
+    addiu   $t3, %lo(Pico+0x22200)
+    lw      $t1, 4($t2)     # SRam.start
+    subu    $t4, $t1, $a0
+    bgtz    $t4, 1f
+    nop
+    lb      $t1, 0x11($t3)  # Pico.m.sram_reg
+    andi    $t4, $t1, 5
+    beqz    $t4, 1f
+    nop
+.if \size == 8
+    j       SRAMRead
+    nop
+.elseif \size == 16
+    sd      $ra, -16($sp)
+    jal     SRAMRead16
+    addiu   $sp, -16
+    ld      $ra, 0($sp)
+    jr      $ra
+    addiu   $sp, 16
+.else
+    addiu   $sp, -32
+    sd      $ra, 0($sp)
+    sd      $a0, 16($sp)
+    jal     SRAMRead16
+    nop
+    ld      $a0, 16($sp)
+    sd      $v0, 16($sp)
+    jal     SRAMRead16
+    addiu   $a0, 2
+    ld      $v1, 16($sp)
+    ld      $ra, 0($sp)
+	andi	$v0, $v0, 0xFFFF
+	srl		$v1, $v1, 16
+	or		$v0, $v1
+    jr      $ra
+    addiu   $sp, 32
+.endif
+# m_read_nosram:
+1:
+.endm
+
+.macro m_read8_rom sect
+    lui     $t0, %hi(Pico+0x22200)
+    lw      $t0, %lo(Pico+0x22200)($t0)  # rom
+    xori    $a0, 1
+	sll		$a0, $a0, 13
+	srl		$a0, $a0, 13
+.if \sect
+    lui     $t1, 8*\sect
+    addu    $a0, $t1
+.endif
+    addu    $t0, $a0
+    jr      $ra
+    lb      $v0, 0($t0)
+.endm
+
+
+m_read8_rom0: # 0x000000 - 0x07ffff
+    m_read8_rom 0
+
+m_read8_rom1: # 0x080000 - 0x0fffff
+    m_read8_rom 1
+
+m_read8_rom2: # 0x100000 - 0x17ffff
+    m_read8_rom 2
+
+m_read8_rom3: # 0x180000 - 0x1fffff
+    m_read8_rom 3
+
+m_read8_rom4: # 0x200000 - 0x27ffff, SRAM area
+    m_read_rom_try_sram 1 8
+    lw      $t1, 4($t3)     # romsize
+    subu    $t4, $t1, $a0
+    blez    $t4, m_read_null
+    lw      $t1, 0($t3)     # rom
+    xori    $a0, 1
+    addu    $t1, $a0
+    jr      $ra
+    lb      $v0, 0($t1)
+
+m_read8_rom5: # 0x280000 - 0x2fffff
+    m_read8_rom 5
+
+m_read8_rom6: # 0x300000 - 0x37ffff
+    m_read8_rom 6
+
+m_read8_rom7: # 0x380000 - 0x3fffff
+    m_read8_rom 7
+
+m_read8_rom8: # 0x400000 - 0x47ffff
+    m_read8_rom 8
+
+m_read8_rom9: # 0x480000 - 0x4fffff
+    m_read8_rom 9
+
+m_read8_romA: # 0x500000 - 0x57ffff
+    m_read8_rom 0xA
+
+m_read8_romB: # 0x580000 - 0x5fffff
+    m_read8_rom 0xB
+
+m_read8_romC: # 0x600000 - 0x67ffff
+    m_read8_rom 0xC
+
+m_read8_romD: # 0x680000 - 0x6fffff
+    m_read8_rom 0xD
+
+m_read8_romE: # 0x700000 - 0x77ffff
+    m_read8_rom 0xE
+
+m_read8_romF: # 0x780000 - 0x7fffff
+    m_read8_rom 0xF
+
+m_read8_rom10: # 0x800000 - 0x87ffff
+    m_read8_rom 0x10
+
+m_read8_rom11: # 0x880000 - 0x8fffff
+    m_read8_rom 0x11
+
+m_read8_rom12: # 0x900000 - 0x97ffff
+    m_read8_rom 0x12
+
+m_read8_rom13: # 0x980000 - 0x9fffff
+    m_read8_rom 0x13
+
+
+m_read8_misc:
+    srl     $t0, $a0, 5
+    sll     $t0, $t0, 5
+    lui     $t1, 0xa1
+    bne     $t0, $t1, m_read8_misc2
+    andi    $t0, $a0, 0x1e
+m_read8_misc_io:
+    beqz    $t0, m_read8_misc_hwreg
+    sub     $t1, $t0, 4
+    bgtz    $t1, m_read8_misc_ioports
+    nop
+    slti    $a0, $t0, 4
+    xori    $a0, 1
+    j       PadRead
+    nop
+
+m_read8_misc_hwreg:
+    lui     $v0, %hi(Pico+0x2220f)
+    jr      $ra
+    lb      $v0, %lo(Pico+0x2220f)($v0)
+
+m_read8_misc_ioports:
+    lui     $v0, %hi(Pico+0x22000)
+	sra		$v0, $v0, 5
+	sll		$v0, $v0, 5
+	andi	$t0, $t0, 0x1F
+	or		$v0, $v0, $t0
+    jr      $ra
+    lb      $v0, %lo(Pico+0x22000)($v0)
+
+m_read8_misc2:
+    lui     $t0, 0xa1
+    ori     $t0, 0x1100
+    bne     $a0, $t0, m_read8_misc3
+    srl     $t0, $a0, 16
+    j       z80ReadBusReq
+
+m_read8_misc3:
+    addiu   $t0, 0xff60       # expecting 0xa0 to get 0
+    bnez    $t0, m_read8_misc4
+
+    # z80 area
+    andi    $t0, $a0, 0x4000
+    bnez    $t0, m_read8_z80_misc
+    andi    $t0, $a0, 0x6000
+    j       z80Read8          # z80 RAM
+
+m_read8_z80_misc:
+    addiu   $t0, 0xc000       # expecting 0x4000 to get 0
+    bnez    $t0, m_read_neg1  # invalid
+    nop
+    j       ym2612_read_local_68k
+    nop
+
+m_read8_fake_ym2612:
+    lb      $v0, %lo(Pico+0x22208)($t0) # Pico.m.rotate
+    addiu   $t1, $v0, 1
+    jr      $ra
+    sb      $t1, %lo(Pico+0x22208)($t0)
+
+# delay slot friendly
+.macro m_read8_call16 funcname is_func_ptr=0
+.if \is_func_ptr
+    lui     $t1, %hi(\funcname)
+    lw      $t1, %lo(\funcname)($t1)
+.endif
+    andi    $t0, $a0, 1
+    beqz    $t0, 1f
+    li      $a1, 8      # not always needed, but shouln't cause problems
+.if \is_func_ptr
+    jr      $t1
+.else
+    j       \funcname   # odd address
+.endif
+    nop
+1:
+    addiu   $sp, -16
+    sd      $ra, 0($sp)
+.if \is_func_ptr
+    jalr    $t1
+.else
+    jal     \funcname
+.endif
+    xori    $a0, 1
+    ld      $ra, 0($sp)
+    addiu   $sp, 16
+    jr      $ra
+    srl     $v0, 8
+.endm
+
+m_read8_misc4:
+    # if everything else fails, use generic handler
+    m_read8_call16 OtherRead16
+
+m_read8_vdp:
+    ext     $t0, $a0, 16, 3
+    andi    $t1, $a0, 0xe0
+    or      $t0, $t1
+    bnez    $t0, m_read_null # invalid address
+    nop
+    j       PicoVideoRead8
+    nop
+
+m_read8_ram:
+    lui     $t0, %hi(Pico)
+	andi	$a0, $a0, 0xFFFF
+	sra		$t0, $t0, 16
+	sll		$t0, $t0, 16
+	or		$t0, $t0, $a0
+    xori    $t0, 1
+    jr      $ra
+    lb      $v0, %lo(Pico)($t0)
+
+m_read8_above_rom:
+    # might still be SRam (Micro Machines, HardBall '95)
+    m_read_rom_try_sram 0 8
+    m_read8_call16 PicoRead16Hook 1
+
+# #############################################################################
+
+.macro m_read16_rom sect
+    lui     $t0, %hi(Pico+0x22200)
+    lw      $t0, %lo(Pico+0x22200)($t0)  # rom
+	li		$at, 0x0007FFFE
+	and		$a0, $a0, $at
+.if \sect
+    lui     $t1, 8*\sect
+    addu    $a0, $t1
+.endif
+    addu    $t0, $a0
+    jr      $ra
+    lh      $v0, 0($t0)
+.endm
+
+
+m_read16_rom0: # 0x000000 - 0x07ffff
+    m_read16_rom 0
+
+m_read16_rom1: # 0x080000 - 0x0fffff
+    m_read16_rom 1
+
+m_read16_rom2: # 0x100000 - 0x17ffff
+    m_read16_rom 2
+
+m_read16_rom3: # 0x180000 - 0x1fffff
+    m_read16_rom 3
+
+m_read16_rom4: # 0x200000 - 0x27ffff, SRAM area
+    m_read_rom_try_sram 1 16
+    lw      $t1, 4($t3)     # romsize
+    subu    $t4, $t1, $a0
+    blez    $t4, m_read_null
+    lw      $t1, 0($t3)     # rom
+	sra		$a0, $a0, 1
+	sll		$a0, $a0, 1
+    addu    $t1, $a0
+    jr      $ra
+    lh      $v0, 0($t1)
+
+m_read16_rom5: # 0x280000 - 0x2fffff
+    m_read16_rom 5
+
+m_read16_rom6: # 0x300000 - 0x37ffff
+    m_read16_rom 6
+
+m_read16_rom7: # 0x380000 - 0x3fffff
+    m_read16_rom 7
+
+m_read16_rom8: # 0x400000 - 0x47ffff
+    m_read16_rom 8
+
+m_read16_rom9: # 0x480000 - 0x4fffff
+    m_read16_rom 9
+
+m_read16_romA: # 0x500000 - 0x57ffff
+    m_read16_rom 0xA
+
+m_read16_romB: # 0x580000 - 0x5fffff
+    m_read16_rom 0xB
+
+m_read16_romC: # 0x600000 - 0x67ffff
+    m_read16_rom 0xC
+
+m_read16_romD: # 0x680000 - 0x6fffff
+    m_read16_rom 0xD
+
+m_read16_romE: # 0x700000 - 0x77ffff
+    m_read16_rom 0xE
+
+m_read16_romF: # 0x780000 - 0x7fffff
+    m_read16_rom 0xF
+
+m_read16_rom10: # 0x800000 - 0x87ffff
+    m_read16_rom 0x10
+
+m_read16_rom11: # 0x880000 - 0x8fffff
+    m_read16_rom 0x11
+
+m_read16_rom12: # 0x900000 - 0x97ffff
+    m_read16_rom 0x12
+
+m_read16_rom13: # 0x980000 - 0x9fffff
+    m_read16_rom 0x13
+
+m_read16_misc:
+	sra		$a0, $a0, 1
+	sll		$a0, $a0, 1
+    j       OtherRead16
+    li      $a1, 16
+
+m_read16_vdp:
+    ext     $t0, $a0, 16, 3
+    andi    $t1, $a0, 0xe0
+    or      $t0, $t1
+    bnez    $t0, m_read_null # invalid address
+	sra		$a0, $a0, 1
+    j       PicoVideoRead
+	sll		$a0, $a0, 1
+
+m_read16_ram:
+    lui     $t0, %hi(Pico)
+	srl		$a0, $a0, 1
+	sll		$a0, $a0, 17
+	srl		$a0, $a0, 16
+	sra		$t0, $t0, 16
+	sll		$t0, $t0, 16
+	or		$t0, $t0, $a0
+    jr      $ra
+    lh      $v0, %lo(Pico)($t0)
+
+m_read16_above_rom:
+    # might still be SRam
+    m_read_rom_try_sram 0 16
+    lui     $t1, %hi(PicoRead16Hook)
+    lw      $t1, %lo(PicoRead16Hook)($t1)
+	sra		$a0, $a0, 1
+    jr      $t1
+	sll		$a0, $a0, 1
+
+# #############################################################################
+
+.macro m_read32_rom sect
+    lui     $t0, %hi(Pico+0x22200)
+    lw      $t0, %lo(Pico+0x22200)($t0)  # rom
+	li		$at, 0x0007FFFE
+	and		$a0, $a0, $at
+.if \sect
+    lui     $t1, 8*\sect
+    addu    $a0, $t1
+.endif
+    addu    $t0, $a0
+    lh      $v1, 0($t0)
+    lh      $v0, 2($t0)
+	andi	$v0, $v0, 0xFFFF
+	sll		$v1, $v1, 16
+    jr      $ra
+	or		$v0, $v0, $v1
+.endm
+
+
+m_read32_rom0: # 0x000000 - 0x07ffff
+    m_read32_rom 0
+
+m_read32_rom1: # 0x080000 - 0x0fffff
+    m_read32_rom 1
+
+m_read32_rom2: # 0x100000 - 0x17ffff
+    m_read32_rom 2
+
+m_read32_rom3: # 0x180000 - 0x1fffff
+    m_read32_rom 3
+
+m_read32_rom4: # 0x200000 - 0x27ffff, SRAM area
+    m_read_rom_try_sram 1 32
+    lw      $t1, 4($t3)     # romsize
+    subu    $t4, $t1, $a0
+    blez    $t4, m_read_null
+    lw      $t1, 0($t3)     # rom
+	sra		$a0, $a0, 1
+	sll		$a0, $a0, 1
+    addu    $t1, $a0
+    lh      $v1, 0($t1)
+    lh      $v0, 2($t1)
+	andi	$v0, $v0, 0xFFFF
+	sll		$v1, $v1, 16
+    jr      $ra
+	or		$v0, $v0, $v1
+
+m_read32_rom5: # 0x280000 - 0x2fffff
+    m_read32_rom 5
+
+m_read32_rom6: # 0x300000 - 0x37ffff
+    m_read32_rom 6
+
+m_read32_rom7: # 0x380000 - 0x3fffff
+    m_read32_rom 7
+
+m_read32_rom8: # 0x400000 - 0x47ffff
+    m_read32_rom 8
+
+m_read32_rom9: # 0x480000 - 0x4fffff
+    m_read32_rom 9
+
+m_read32_romA: # 0x500000 - 0x57ffff
+    m_read32_rom 0xA
+
+m_read32_romB: # 0x580000 - 0x5fffff
+    m_read32_rom 0xB
+
+m_read32_romC: # 0x600000 - 0x67ffff
+    m_read32_rom 0xC
+
+m_read32_romD: # 0x680000 - 0x6fffff
+    m_read32_rom 0xD
+
+m_read32_romE: # 0x700000 - 0x77ffff
+    m_read32_rom 0xE
+
+m_read32_romF: # 0x780000 - 0x7fffff
+    m_read32_rom 0xF
+
+m_read32_rom10: # 0x800000 - 0x87ffff
+    m_read32_rom 0x10
+
+m_read32_rom11: # 0x880000 - 0x8fffff
+    m_read32_rom 0x11
+
+m_read32_rom12: # 0x900000 - 0x97ffff
+    m_read32_rom 0x12
+
+m_read32_rom13: # 0x980000 - 0x9fffff
+    m_read32_rom 0x13
+
+.macro m_read32_call16 func need_a1=0
+    addiu   $sp, -32
+    sd      $ra, 0($sp)
+    sd      $s0, 16($sp)
+.if \need_a1
+    li      $a1, 16
+.endif
+    jal     \func
+    move    $s0, $a0
+
+    addu    $a0, $s0, 2
+.if \need_a1
+    li      $a1, 16
+.endif
+    jal     \func
+    move    $s0, $v0
+
+	sll		$s0, $s0, 16
+	andi	$v0, $v0, 0xFFFF
+	or		$v0, $v0, $s0
+    ld      $ra, 0($sp)
+    ld      $s0, 16($sp)
+    jr      $ra
+    addiu   $sp, 32
+.endm
+
+m_read32_misc:
+	sra		$a0, $a0, 1
+	sll		$a0, $a0, 1
+    m_read32_call16 OtherRead16, 1
+
+m_read32_vdp:
+    ext     $t0, $a0, 16, 3
+    andi    $t1, $a0, 0xe0
+    or      $t0, $t1
+    bnez    $t0, m_read_null # invalid address
+	sra		$a0, $a0, 1
+	sll		$a0, $a0, 1
+    m_read32_call16 PicoVideoRead
+
+m_read32_ram:
+    lui     $t0, %hi(Pico)
+	sra		$a0, $a0, 1
+	sll		$a0, $a0, 17
+	srl		$a0, $a0, 16
+	sra		$t0, $t0, 16
+	sll		$t0, $t0, 16
+	or		$t0, $t0, $a0
+    lh      $v1, %lo(Pico)($t0)
+    lh      $v0, %lo(Pico+2)($t0)
+	andi	$v0, $v0, 0xFFFF
+	sll		$v1, $v1, 16
+    jr      $ra
+	or		$v0, $v0, $v1
+
+m_read32_above_rom:
+    # might still be SRam
+    m_read_rom_try_sram 0 32
+	sra		$a0, $a0, 1
+	sll		$a0, $a0, 1
+    lui     $t1, %hi(PicoRead16Hook)
+    lw      $t1, %lo(PicoRead16Hook)($t1)
+    addiu   $sp, -16*3
+    sd      $ra, 0($sp)
+    sd      $s0, 16($sp)
+    sd      $t1, 32($sp)
+    jalr    $t1
+    move    $s0, $a0
+
+    ld      $t1, 32($sp)
+    addu    $a0, $s0, 2
+    jalr    $t1
+    move    $s0, $v0
+
+	andi	$v0, $v0, 0xFFFF
+	sll		$s0, $s0, 16
+	or		$v0, $v0, $s0
+    ld      $ra, 0($sp)
+    ld      $s0, 16($sp)
+    jr      $ra
+    addiu   $sp, 16*3
+
+# #############################################################################
+
+.macro PicoWriteRomHW_SSF2_ls def_table table
+    lui     $t3, %hi(\def_table)
+	li		$at, 0xFFFFFF83
+	and		$t3, $t3, $at
+	andi	$at, $a1, 0x1F
+	sll		$at, $at, 2
+	or		$t3, $t3, $at
+    lw      $t0, %lo(\def_table)($t3)
+    lui     $t2, %hi(\table)
+	li		$at, 0xFFFFFFE3
+	and		$t2, $t2, $at
+	andi	$at, $a0, 0x07
+	sll		$at, $at, 2
+	or		$t2, $t2, $at
+    sw      $t0, %lo(\table)($t2)
+.endm
+
+PicoWriteRomHW_SSF2: # u32 a, u32 d
+    ext     $a0, $a0, 1, 3
+    bnez    $a0, pwr_banking
+
+    # sram register
+    lui     $t0, %hi(Pico+0x22211)
+    lb      $t1, %lo(Pico+0x22211)($t0) # Pico.m.sram_reg
+	sra		$t1, $t1, 2
+	sll		$t1, $t1, 2
+	andi	$a1, $a1, 3
+	or		$t1, $t1, $a1
+    jr      $ra
+    sb      $t1, %lo(Pico+0x22211)($t0)
+
+pwr_banking:
+    andi    $a1, 0x1f
+
+    PicoWriteRomHW_SSF2_ls m_read8_def_table  m_read8_table
+    PicoWriteRomHW_SSF2_ls m_read16_def_table m_read16_table
+    PicoWriteRomHW_SSF2_ls m_read32_def_table m_read32_table
+ 
+    jr      $ra
+    nop
+

+ 3 - 0
platform/ps2/asm.h

@@ -0,0 +1,3 @@
+// By right, input and output pointers must be all quad-word aligned. Unfortunately, some stuff that Picodrive passes to these functions aren't aligned to that degree. And so, only double-word alignment is required.
+void do_pal_convert(unsigned short *dest, const unsigned short *src);
+void do_pal_convert_with_shadows(unsigned short *dest, const unsigned short *src);

+ 129 - 0
platform/ps2/asm.s

@@ -0,0 +1,129 @@
+# vim:filetype=mips
+
+# some asm utils for the Sony Emotion Engine (MIPS R5900)
+
+.set push
+.set noreorder
+
+.text
+.align 4
+
+# A1B5G5R5 abbb bbgg gggr rrrr
+.global do_pal_convert # dest, src
+.ent do_pal_convert
+do_pal_convert:
+	li $t0, 0x8000800080008000	#A
+	li $t1, 0x000E000E000E000E	#R
+	li $t2, 0x00E000E000E000E0	#G
+	li $t3, 0x0E000E000E000E00	#B
+	li $t4, 64	# 64 16-bit colours
+
+	#Duplicate the lower dword into the upper dword of each mask (0-63 to 64-127).
+	pcpyld $t0, $t0
+	pcpyld $t1, $t1
+	pcpyld $t2, $t2
+	pcpyld $t3, $t3
+
+	#	I couldn't do this with qword loads and stores in C (There's no 128-bit literal data type definition), but here's the 16-bit (1 colour per literation) equivalent in C for a reference.
+	#	PalRow=in_palette[i];
+	#	palette[i]=((PalRow&0x000E)<< 1)|((PalRow&0x00E0)<<2)|((PalRow&0x0E00)<<3) | 0x8000;
+pal_convert_loop:
+	ld $t5, 8($a1)
+	ld $t6, 0($a1)
+	pcpyld $t5, $t5, $t6
+#	lq $t5, 0($a1)	#This won't work because the CRAM palette may not be aligned to a 128-bit address (And unless the source code of Picodrive is modified for that purpose, use two dword loads instead). :(
+
+	#Blue
+	pand $t6, $t5, $t3
+	psllh $t6, $t6, 3
+
+	#Green
+	pand $t7, $t5, $t2
+	psllh $t7, $t7, 2
+
+	#Red
+	pand $t5, $t5, $t1
+	psllh $t5, $t5, 1
+
+	por $t5, $t5, $t0	#Logical OR in the alpha channel
+	por $t5, $t5, $t6	#Logical OR in the blue channel
+	por $t5, $t5, $t7	#Logical OR in the green channel
+
+	sq $t5, ($a0)
+
+	addiu $a1, $a1, 16
+	addiu $t4, $t4, -8	#8 16-bit colours were processed.
+	bgez $t4, pal_convert_loop
+	addiu $a0, $a0, 16
+
+    jr      $ra
+    nop
+.end do_pal_convert
+
+.global do_pal_convert_with_shadows # dest, src
+.ent do_pal_convert_with_shadows
+do_pal_convert_with_shadows:
+	li $t0, 0x8000800080008000	#A mask
+	li $t1, 0x000E000E000E000E	#R mask
+	li $t2, 0x00E000E000E000E0	#G mask
+	li $t3, 0x0E000E000E000E00	#B mask
+	li $a2, 0x39CE39CE39CE39CE	#Shadow mask
+	li $a3, 0x4210421042104210	#Highlight mask
+	li $t4, 64	# 64 16-bit colours
+	#	$t5 will contain the raw converted colour, without alpha. This will be also used for conversion into the shadow alternate colours.
+
+	# Duplicate the lower dword into the upper dword of each mask (0-63 to 64-127).
+	pcpyld $t0, $t0
+	pcpyld $t1, $t1
+	pcpyld $t2, $t2
+	pcpyld $t3, $t3
+	pcpyld $a2, $a2
+	pcpyld $a3, $a3
+
+	#	I couldn't do this with qword loads and stores in C (There's no 128-bit literal data type definition), but here's the 16-bit (1 colour per literation) equivalent in C for a reference.
+	#	PalRow=in_palette[i];
+	#	palette[i]=((PalRow&0x000E)<< 1)|((PalRow&0x00E0)<<2)|((PalRow&0x0E00)<<3) | 0x8000;
+pal_convert_loop_sh:
+	ld $t5, 8($a1)
+	ld $t6, 0($a1)
+	pcpyld $t5, $t5, $t6
+#	lq $t5, 0($a1)	#This won't work because the CRAM palette may not be aligned to a 128-bit address (And unless the source code of Picodrive is modified for that purpose, use two dword loads instead). :(
+
+	#Blue
+	pand $t6, $t5, $t3
+	psllh $t6, $t6, 3
+
+	#Green
+	pand $t7, $t5, $t2
+	psllh $t7, $t7, 2
+
+	#Red
+	pand $t5, $t5, $t1
+	psllh $t5, $t5, 1
+
+	por $t5, $t5, $t6	#Logical OR in the blue channel
+	por $t5, $t5, $t7	#Logical OR in the green channel
+	por $t6, $t5, $t0	#Logical OR in the alpha channel
+	sq $t6, ($a0)		#Normal
+
+	#Highlights
+	por $t6, $t6, $a3
+	sq $t6, 0x80($a0)
+
+	#Shadows
+	psrlh $t5, $t5, 1
+	pand $t5, $t5, $a2
+	por $t5, $t5, $t0	#Logical OR in the alpha channel
+	sq $t5, 0x40($a0)
+	sq $t5, 0xC0($a0)
+
+	addiu $a1, $a1, 16
+	addiu $t4, $t4, -8	#8 16-bit colours were processed.
+	bgez $t4, pal_convert_loop_sh
+	addiu $a0, $a0, 16
+
+    jr      $ra
+    nop
+.end do_pal_convert_with_shadows
+
+.set pop

+ 125 - 0
platform/switch/mman.h

@@ -0,0 +1,125 @@
+#ifndef MMAN_H
+#define MMAN_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <malloc.h>
+#include <switch.h>
+#include <stdlib.h>
+
+//#include "3ds_utils.h"
+
+#define PROT_READ 0b001
+#define PROT_WRITE 0b010
+#define PROT_EXEC 0b100
+#define MAP_PRIVATE 2
+#define MAP_FIXED 0x10
+#define MAP_ANONYMOUS 0x20
+
+#define MAP_FAILED ((void *)-1)
+
+    static void *dynarec_cache = NULL;
+    static void *dynarec_cache_mapping = NULL;
+
+    static inline void *mmap(void *addr, size_t len, int prot, int flags, int fd, off_t offset)
+    {
+        (void)fd;
+        (void)offset;
+
+        //void* addr_out;
+        Result rc = svcMapPhysicalMemory(addr, len);
+        if (R_FAILED(rc))
+        {
+            printf("mmap failed\n");
+            return malloc(len);
+        }
+
+        return addr;
+
+        //   if((prot == (PROT_READ | PROT_WRITE | PROT_EXEC)) &&
+        //      (flags == (MAP_PRIVATE | MAP_ANONYMOUS)))
+        //   {
+        //      if(true)// __ctr_svchax)
+        //     {
+        //         /* this hack works only for pcsx_rearmed */
+        //         uint32_t currentHandle;
+        //
+        //         if(!dynarec_cache)
+        //            dynarec_cache = memalign(0x1000, len);
+        //
+        //         //svcDuplicateHandle(&currentHandle, 0xFFFF8001);
+        //         //svcControlProcessMemory(currentHandle, addr, dynarec_cache,
+        //         //                        len, MEMOP_MAP, prot);
+        //         svcCloseHandle(currentHandle);
+        //         dynarec_cache_mapping = addr;
+        //         return addr;
+        //      }
+        //      else
+        //      {
+        //         printf("tried to mmap RWX pages without svcControlProcessMemory access !\n");
+        //         return MAP_FAILED;
+        //      }
+        //
+        //   }
+
+        //   addr_out = memalign(0x1000, len);
+        //   if(!addr_out)
+        //      return MAP_FAILED;
+        //
+        //   return addr_out;
+    }
+
+    static inline int mprotect(void *addr, size_t len, int prot)
+    {
+        return 0;
+        //if(true) // __ctr_svchax)
+        //{
+        //   uint32_t currentHandle;
+        //   //svcDuplicateHandle(&currentHandle, 0xFFFF8001);
+        //   //svcControlProcessMemory(currentHandle, addr, NULL,
+        //   //                        len, MEMOP_PROT, prot);
+        //   svcCloseHandle(currentHandle);
+        //   return 0;
+        //}
+
+        //printf("mprotect called without svcControlProcessMemory access !\n");
+        //return -1;
+    }
+
+    static inline int munmap(void *addr, size_t len)
+    {
+        Result rc = svcUnmapPhysicalMemory(addr, len);
+        if (R_FAILED(rc))
+        {
+            printf("munmap failed\n");
+            free(addr);
+        }
+        return 0;
+        //   if((addr == dynarec_cache_mapping) && true)//__ctr_svchax)
+        //   {
+        //      uint32_t currentHandle;
+        //      //svcDuplicateHandle(&currentHandle, 0xFFFF8001);
+        //      //svcControlProcessMemory(currentHandle,
+        //      //                        dynarec_cache, dynarec_cache_mapping,
+        //      //                        len, MEMOP_UNMAP, 0b111);
+        //      svcCloseHandle(currentHandle);
+        //      dynarec_cache_mapping = NULL;
+        //
+        //   }
+        //   else
+        free(addr);
+
+        return 0;
+    }
+
+#ifdef __cplusplus
+};
+#endif
+
+#endif // MMAN_H

+ 2 - 2
tools/mkoffsets.sh

@@ -51,7 +51,7 @@ check_obj ()
 		fi
 		# find the start line of the .rodata section; read the next line
 		ro=$($OBJDUMP -s /tmp/getoffs.o | awk '\
-		  /Contents of section.*(__const|.ro?data|.sdata)/ {o=1; next} \
+		  /Contents of section.*(__const|.r[o]?data|.sdata)/ {o=1; next} \
 		  {if(o) { gsub(/  .*/,""); $1=""; gsub(/ /,""); print; exit}}')
 		# no working tool for extracting the ro data; stop here
 		if [ -z "$ro" ]; then
@@ -79,7 +79,7 @@ compile_rodata ()
 	elif [ -n "$OBJDUMP" ]; then
 		# find the start line of the .rodata section; read the next line
 		ro=$($OBJDUMP -s /tmp/getoffs.o | awk '\
-		  /Contents of section.*(__const|.ro?data|.sdata)/ {o=1; next} \
+		  /Contents of section.*(__const|.r[o]?data|.sdata)/ {o=1; next} \
 		  {if(o) { gsub(/  .*/,""); $1=""; gsub(/ /,""); print; exit}}')
 	fi
 	if [ "$ENDIAN" = "le" ]; then