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- #ifndef __ASMARM_ELF_H
- #define __ASMARM_ELF_H
- #ifndef __ASSEMBLY__
- /*
- * ELF register definitions..
- */
- #include <asm/ptrace.h>
- #include <asm/user.h>
- typedef unsigned long elf_greg_t;
- typedef unsigned long elf_freg_t[3];
- #define ELF_NGREG (sizeof (struct pt_regs) / sizeof(elf_greg_t))
- typedef elf_greg_t elf_gregset_t[ELF_NGREG];
- typedef struct user_fp elf_fpregset_t;
- #endif
- #define EM_ARM 40
- #define EF_ARM_APCS26 0x08
- #define EF_ARM_SOFT_FLOAT 0x200
- #define EF_ARM_EABI_MASK 0xFF000000
- #define R_ARM_NONE 0
- #define R_ARM_PC24 1
- #define R_ARM_ABS32 2
- #define R_ARM_CALL 28
- #define R_ARM_JUMP24 29
- /*
- * These are used to set parameters in the core dumps.
- */
- #define ELF_CLASS ELFCLASS32
- #ifdef __ARMEB__
- #define ELF_DATA ELFDATA2MSB
- #else
- #define ELF_DATA ELFDATA2LSB
- #endif
- #define ELF_ARCH EM_ARM
- /*
- * HWCAP flags - for elf_hwcap (in kernel) and AT_HWCAP
- */
- #define HWCAP_SWP 1
- #define HWCAP_HALF 2
- #define HWCAP_THUMB 4
- #define HWCAP_26BIT 8 /* Play it safe */
- #define HWCAP_FAST_MULT 16
- #define HWCAP_FPA 32
- #define HWCAP_VFP 64
- #define HWCAP_EDSP 128
- #define HWCAP_JAVA 256
- #define HWCAP_IWMMXT 512
- #define HWCAP_CRUNCH 1024
- #ifdef __KERNEL__
- #ifndef __ASSEMBLY__
- /*
- * This yields a mask that user programs can use to figure out what
- * instruction set this cpu supports.
- */
- #define ELF_HWCAP (elf_hwcap)
- extern unsigned int elf_hwcap;
- /*
- * This yields a string that ld.so will use to load implementation
- * specific libraries for optimization. This is more specific in
- * intent than poking at uname or /proc/cpuinfo.
- *
- * For now we just provide a fairly general string that describes the
- * processor family. This could be made more specific later if someone
- * implemented optimisations that require it. 26-bit CPUs give you
- * "v1l" for ARM2 (no SWP) and "v2l" for anything else (ARM1 isn't
- * supported). 32-bit CPUs give you "v3[lb]" for anything based on an
- * ARM6 or ARM7 core and "armv4[lb]" for anything based on a StrongARM-1
- * core.
- */
- #define ELF_PLATFORM_SIZE 8
- #define ELF_PLATFORM (elf_platform)
- extern char elf_platform[];
- #endif
- /*
- * This is used to ensure we don't load something for the wrong architecture.
- */
- #define elf_check_arch(x) ((x)->e_machine == EM_ARM && ELF_PROC_OK(x))
- /*
- * 32-bit code is always OK. Some cpus can do 26-bit, some can't.
- */
- #define ELF_PROC_OK(x) (ELF_THUMB_OK(x) && ELF_26BIT_OK(x))
- #define ELF_THUMB_OK(x) \
- ((elf_hwcap & HWCAP_THUMB && ((x)->e_entry & 1) == 1) || \
- ((x)->e_entry & 3) == 0)
- #define ELF_26BIT_OK(x) \
- ((elf_hwcap & HWCAP_26BIT && (x)->e_flags & EF_ARM_APCS26) || \
- ((x)->e_flags & EF_ARM_APCS26) == 0)
- #define USE_ELF_CORE_DUMP
- #define ELF_EXEC_PAGESIZE 4096
- /* This is the location that an ET_DYN program is loaded if exec'ed. Typical
- use of this is to invoke "./ld.so someprog" to test out a new version of
- the loader. We need to make sure that it is out of the way of the program
- that it will "exec", and that there is sufficient room for the brk. */
- #define ELF_ET_DYN_BASE (2 * TASK_SIZE / 3)
- /* When the program starts, a1 contains a pointer to a function to be
- registered with atexit, as per the SVR4 ABI. A value of 0 means we
- have no such handler. */
- #define ELF_PLAT_INIT(_r, load_addr) (_r)->ARM_r0 = 0
- /*
- * Since the FPA coprocessor uses CP1 and CP2, and iWMMXt uses CP0
- * and CP1, we only enable access to the iWMMXt coprocessor if the
- * binary is EABI or softfloat (and thus, guaranteed not to use
- * FPA instructions.)
- */
- #define SET_PERSONALITY(ex, ibcs2) \
- do { \
- if ((ex).e_flags & EF_ARM_APCS26) { \
- set_personality(PER_LINUX); \
- } else { \
- set_personality(PER_LINUX_32BIT); \
- if (elf_hwcap & HWCAP_IWMMXT && (ex).e_flags & (EF_ARM_EABI_MASK | EF_ARM_SOFT_FLOAT)) \
- set_thread_flag(TIF_USING_IWMMXT); \
- else \
- clear_thread_flag(TIF_USING_IWMMXT); \
- } \
- } while (0)
- #endif
- #endif
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