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- /*
- * Basic macros to emit ARM instructions and some utils
- * Copyright (C) 2008,2009,2010 notaz
- *
- * This work is licensed under the terms of MAME license.
- * See COPYING file in the top-level directory.
- */
- #define HOST_REGS 16
- #define CONTEXT_REG 11
- #define RET_REG 0
- // XXX: tcache_ptr type for SVP and SH2 compilers differs..
- #define EMIT_PTR(ptr, x) \
- do { \
- *(u32 *)ptr = x; \
- ptr = (void *)((u8 *)ptr + sizeof(u32)); \
- COUNT_OP; \
- } while (0)
- #define EMIT(x) EMIT_PTR(tcache_ptr, x)
- #define A_R4M (1 << 4)
- #define A_R5M (1 << 5)
- #define A_R6M (1 << 6)
- #define A_R7M (1 << 7)
- #define A_R8M (1 << 8)
- #define A_R9M (1 << 9)
- #define A_R10M (1 << 10)
- #define A_R11M (1 << 11)
- #define A_R12M (1 << 12)
- #define A_R14M (1 << 14)
- #define A_R15M (1 << 15)
- #define A_COND_AL 0xe
- #define A_COND_EQ 0x0
- #define A_COND_NE 0x1
- #define A_COND_HS 0x2
- #define A_COND_LO 0x3
- #define A_COND_MI 0x4
- #define A_COND_PL 0x5
- #define A_COND_VS 0x6
- #define A_COND_VC 0x7
- #define A_COND_HI 0x8
- #define A_COND_LS 0x9
- #define A_COND_GE 0xa
- #define A_COND_LT 0xb
- #define A_COND_GT 0xc
- #define A_COND_LE 0xd
- #define A_COND_CS A_COND_HS
- #define A_COND_CC A_COND_LO
- /* unified conditions */
- #define DCOND_EQ A_COND_EQ
- #define DCOND_NE A_COND_NE
- #define DCOND_MI A_COND_MI
- #define DCOND_PL A_COND_PL
- #define DCOND_HI A_COND_HI
- #define DCOND_HS A_COND_HS
- #define DCOND_LO A_COND_LO
- #define DCOND_GE A_COND_GE
- #define DCOND_GT A_COND_GT
- #define DCOND_LT A_COND_LT
- #define DCOND_LS A_COND_LS
- #define DCOND_LE A_COND_LE
- #define DCOND_VS A_COND_VS
- #define DCOND_VC A_COND_VC
- #define DCOND_CS A_COND_HS
- #define DCOND_CC A_COND_LO
- /* addressing mode 1 */
- #define A_AM1_LSL 0
- #define A_AM1_LSR 1
- #define A_AM1_ASR 2
- #define A_AM1_ROR 3
- #define A_AM1_IMM(ror2,imm8) (((ror2)<<8) | (imm8) | 0x02000000)
- #define A_AM1_REG_XIMM(shift_imm,shift_op,rm) (((shift_imm)<<7) | ((shift_op)<<5) | (rm))
- #define A_AM1_REG_XREG(rs,shift_op,rm) (((rs)<<8) | ((shift_op)<<5) | 0x10 | (rm))
- /* data processing op */
- #define A_OP_AND 0x0
- #define A_OP_EOR 0x1
- #define A_OP_SUB 0x2
- #define A_OP_RSB 0x3
- #define A_OP_ADD 0x4
- #define A_OP_ADC 0x5
- #define A_OP_SBC 0x6
- #define A_OP_RSC 0x7
- #define A_OP_TST 0x8
- #define A_OP_TEQ 0x9
- #define A_OP_CMP 0xa
- #define A_OP_CMN 0xb
- #define A_OP_ORR 0xc
- #define A_OP_MOV 0xd
- #define A_OP_BIC 0xe
- #define A_OP_MVN 0xf
- #define EOP_C_DOP_X(cond,op,s,rn,rd,shifter_op) \
- EMIT(((cond)<<28) | ((op)<< 21) | ((s)<<20) | ((rn)<<16) | ((rd)<<12) | (shifter_op))
- #define EOP_C_DOP_IMM( cond,op,s,rn,rd,ror2,imm8) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_IMM(ror2,imm8))
- #define EOP_C_DOP_REG_XIMM(cond,op,s,rn,rd,shift_imm,shift_op,rm) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_REG_XIMM(shift_imm,shift_op,rm))
- #define EOP_C_DOP_REG_XREG(cond,op,s,rn,rd,rs, shift_op,rm) EOP_C_DOP_X(cond,op,s,rn,rd,A_AM1_REG_XREG(rs, shift_op,rm))
- #define EOP_MOV_IMM(rd, ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MOV,0, 0,rd,ror2,imm8)
- #define EOP_MVN_IMM(rd, ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_MVN,0, 0,rd,ror2,imm8)
- #define EOP_ORR_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ORR,0,rn,rd,ror2,imm8)
- #define EOP_EOR_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_EOR,0,rn,rd,ror2,imm8)
- #define EOP_ADD_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_ADD,0,rn,rd,ror2,imm8)
- #define EOP_BIC_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_BIC,0,rn,rd,ror2,imm8)
- #define EOP_AND_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_AND,0,rn,rd,ror2,imm8)
- #define EOP_SUB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_SUB,0,rn,rd,ror2,imm8)
- #define EOP_TST_IMM( rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_TST,1,rn, 0,ror2,imm8)
- #define EOP_CMP_IMM( rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_CMP,1,rn, 0,ror2,imm8)
- #define EOP_RSB_IMM(rd,rn,ror2,imm8) EOP_C_DOP_IMM(A_COND_AL,A_OP_RSB,0,rn,rd,ror2,imm8)
- #define EOP_MOV_IMM_C(cond,rd, ror2,imm8) EOP_C_DOP_IMM(cond,A_OP_MOV,0, 0,rd,ror2,imm8)
- #define EOP_ORR_IMM_C(cond,rd,rn,ror2,imm8) EOP_C_DOP_IMM(cond,A_OP_ORR,0,rn,rd,ror2,imm8)
- #define EOP_RSB_IMM_C(cond,rd,rn,ror2,imm8) EOP_C_DOP_IMM(cond,A_OP_RSB,0,rn,rd,ror2,imm8)
- #define EOP_MOV_REG(cond,s,rd, rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_MOV,s, 0,rd,shift_imm,shift_op,rm)
- #define EOP_MVN_REG(cond,s,rd, rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_MVN,s, 0,rd,shift_imm,shift_op,rm)
- #define EOP_ORR_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_ORR,s,rn,rd,shift_imm,shift_op,rm)
- #define EOP_ADD_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_ADD,s,rn,rd,shift_imm,shift_op,rm)
- #define EOP_ADC_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_ADC,s,rn,rd,shift_imm,shift_op,rm)
- #define EOP_SUB_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_SUB,s,rn,rd,shift_imm,shift_op,rm)
- #define EOP_SBC_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_SBC,s,rn,rd,shift_imm,shift_op,rm)
- #define EOP_AND_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_AND,s,rn,rd,shift_imm,shift_op,rm)
- #define EOP_EOR_REG(cond,s,rd,rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_EOR,s,rn,rd,shift_imm,shift_op,rm)
- #define EOP_CMP_REG(cond, rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_CMP,1,rn, 0,shift_imm,shift_op,rm)
- #define EOP_TST_REG(cond, rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_TST,1,rn, 0,shift_imm,shift_op,rm)
- #define EOP_TEQ_REG(cond, rn,rm,shift_op,shift_imm) EOP_C_DOP_REG_XIMM(cond,A_OP_TEQ,1,rn, 0,shift_imm,shift_op,rm)
- #define EOP_MOV_REG2(s,rd, rm,shift_op,rs) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_MOV,s, 0,rd,rs,shift_op,rm)
- #define EOP_ADD_REG2(s,rd,rn,rm,shift_op,rs) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_ADD,s,rn,rd,rs,shift_op,rm)
- #define EOP_SUB_REG2(s,rd,rn,rm,shift_op,rs) EOP_C_DOP_REG_XREG(A_COND_AL,A_OP_SUB,s,rn,rd,rs,shift_op,rm)
- #define EOP_MOV_REG_SIMPLE(rd,rm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_LSL,0)
- #define EOP_MOV_REG_LSL(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_LSL,shift_imm)
- #define EOP_MOV_REG_LSR(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_LSR,shift_imm)
- #define EOP_MOV_REG_ASR(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_ASR,shift_imm)
- #define EOP_MOV_REG_ROR(rd, rm,shift_imm) EOP_MOV_REG(A_COND_AL,0,rd,rm,A_AM1_ROR,shift_imm)
- #define EOP_ORR_REG_SIMPLE(rd,rm) EOP_ORR_REG(A_COND_AL,0,rd,rd,rm,A_AM1_LSL,0)
- #define EOP_ORR_REG_LSL(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSL,shift_imm)
- #define EOP_ORR_REG_LSR(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSR,shift_imm)
- #define EOP_ORR_REG_ASR(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_ASR,shift_imm)
- #define EOP_ORR_REG_ROR(rd,rn,rm,shift_imm) EOP_ORR_REG(A_COND_AL,0,rd,rn,rm,A_AM1_ROR,shift_imm)
- #define EOP_ADD_REG_SIMPLE(rd,rm) EOP_ADD_REG(A_COND_AL,0,rd,rd,rm,A_AM1_LSL,0)
- #define EOP_ADD_REG_LSL(rd,rn,rm,shift_imm) EOP_ADD_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSL,shift_imm)
- #define EOP_ADD_REG_LSR(rd,rn,rm,shift_imm) EOP_ADD_REG(A_COND_AL,0,rd,rn,rm,A_AM1_LSR,shift_imm)
- #define EOP_TST_REG_SIMPLE(rn,rm) EOP_TST_REG(A_COND_AL, rn, 0,A_AM1_LSL,rm)
- #define EOP_MOV_REG2_LSL(rd, rm,rs) EOP_MOV_REG2(0,rd, rm,A_AM1_LSL,rs)
- #define EOP_MOV_REG2_ROR(rd, rm,rs) EOP_MOV_REG2(0,rd, rm,A_AM1_ROR,rs)
- #define EOP_ADD_REG2_LSL(rd,rn,rm,rs) EOP_ADD_REG2(0,rd,rn,rm,A_AM1_LSL,rs)
- #define EOP_SUB_REG2_LSL(rd,rn,rm,rs) EOP_SUB_REG2(0,rd,rn,rm,A_AM1_LSL,rs)
- /* addressing mode 2 */
- #define EOP_C_AM2_IMM(cond,u,b,l,rn,rd,offset_12) \
- EMIT(((cond)<<28) | 0x05000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | (offset_12))
- #define EOP_C_AM2_REG(cond,u,b,l,rn,rd,shift_imm,shift_op,rm) \
- EMIT(((cond)<<28) | 0x07000000 | ((u)<<23) | ((b)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | \
- ((shift_imm)<<7) | ((shift_op)<<5) | (rm))
- /* addressing mode 3 */
- #define EOP_C_AM3(cond,u,r,l,rn,rd,s,h,immed_reg) \
- EMIT(((cond)<<28) | 0x01000090 | ((u)<<23) | ((r)<<22) | ((l)<<20) | ((rn)<<16) | ((rd)<<12) | \
- ((s)<<6) | ((h)<<5) | (immed_reg))
- #define EOP_C_AM3_IMM(cond,u,l,rn,rd,s,h,offset_8) EOP_C_AM3(cond,u,1,l,rn,rd,s,h,(((offset_8)&0xf0)<<4)|((offset_8)&0xf))
- #define EOP_C_AM3_REG(cond,u,l,rn,rd,s,h,rm) EOP_C_AM3(cond,u,0,l,rn,rd,s,h,rm)
- /* ldr and str */
- #define EOP_LDR_IMM2(cond,rd,rn,offset_12) EOP_C_AM2_IMM(cond,(offset_12) >= 0,0,1,rn,rd,abs(offset_12))
- #define EOP_LDRB_IMM2(cond,rd,rn,offset_12) EOP_C_AM2_IMM(cond,(offset_12) >= 0,1,1,rn,rd,abs(offset_12))
- #define EOP_STR_IMM2(cond,rd,rn,offset_12) EOP_C_AM2_IMM(cond,(offset_12) >= 0,0,0,rn,rd,abs(offset_12))
- #define EOP_LDR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,(offset_12) >= 0,0,1,rn,rd,abs(offset_12))
- #define EOP_LDR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,1,rn,rd,0)
- #define EOP_STR_IMM( rd,rn,offset_12) EOP_C_AM2_IMM(A_COND_AL,(offset_12) >= 0,0,0,rn,rd,abs(offset_12))
- #define EOP_STR_SIMPLE(rd,rn) EOP_C_AM2_IMM(A_COND_AL,1,0,0,rn,rd,0)
- #define EOP_LDR_REG_LSL(cond,rd,rn,rm,shift_imm) EOP_C_AM2_REG(cond,1,0,1,rn,rd,shift_imm,A_AM1_LSL,rm)
- #define EOP_LDRB_REG_LSL(cond,rd,rn,rm,shift_imm) EOP_C_AM2_REG(cond,1,1,1,rn,rd,shift_imm,A_AM1_LSL,rm);
- #define EOP_LDRH_IMM2(cond,rd,rn,offset_8) EOP_C_AM3_IMM(cond,(offset_8) >= 0,1,rn,rd,0,1,abs(offset_8))
- #define EOP_LDRH_REG2(cond,rd,rn,rm) EOP_C_AM3_REG(cond,1,1,rn,rd,0,1,rm)
- #define EOP_LDRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,(offset_8) >= 0,1,rn,rd,0,1,abs(offset_8))
- #define EOP_LDRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,1,rn,rd,0,1,0)
- #define EOP_LDRH_REG( rd,rn,rm) EOP_C_AM3_REG(A_COND_AL,1,1,rn,rd,0,1,rm)
- #define EOP_STRH_IMM( rd,rn,offset_8) EOP_C_AM3_IMM(A_COND_AL,(offset_8) >= 0,0,rn,rd,0,1,abs(offset_8))
- #define EOP_STRH_SIMPLE(rd,rn) EOP_C_AM3_IMM(A_COND_AL,1,0,rn,rd,0,1,0)
- #define EOP_STRH_REG( rd,rn,rm) EOP_C_AM3_REG(A_COND_AL,1,0,rn,rd,0,1,rm)
- #define EOP_LDRSB_IMM2(cond,rd,rn,offset_8) EOP_C_AM3_IMM(cond,(offset_8) >= 0,1,rn,rd,1,0,abs(offset_8))
- #define EOP_LDRSB_REG2(cond,rd,rn,rm) EOP_C_AM3_REG(cond,1,1,rn,rd,1,0,rm)
- #define EOP_LDRSH_IMM2(cond,rd,rn,offset_8) EOP_C_AM3_IMM(cond,(offset_8) >= 0,1,rn,rd,1,1,abs(offset_8))
- #define EOP_LDRSH_REG2(cond,rd,rn,rm) EOP_C_AM3_REG(cond,1,1,rn,rd,1,1,rm)
- /* ldm and stm */
- #define EOP_XXM(cond,p,u,s,w,l,rn,list) \
- EMIT(((cond)<<28) | (1<<27) | ((p)<<24) | ((u)<<23) | ((s)<<22) | ((w)<<21) | ((l)<<20) | ((rn)<<16) | (list))
- #define EOP_STMIA(rb,list) EOP_XXM(A_COND_AL,0,1,0,0,0,rb,list)
- #define EOP_LDMIA(rb,list) EOP_XXM(A_COND_AL,0,1,0,0,1,rb,list)
- #define EOP_STMFD_SP(list) EOP_XXM(A_COND_AL,1,0,0,1,0,13,list)
- #define EOP_LDMFD_SP(list) EOP_XXM(A_COND_AL,0,1,0,1,1,13,list)
- /* branches */
- #define EOP_C_BX(cond,rm) \
- EMIT(((cond)<<28) | 0x012fff10 | (rm))
- #define EOP_C_B_PTR(ptr,cond,l,signed_immed_24) \
- EMIT_PTR(ptr, ((cond)<<28) | 0x0a000000 | ((l)<<24) | (signed_immed_24))
- #define EOP_C_B(cond,l,signed_immed_24) \
- EOP_C_B_PTR(tcache_ptr,cond,l,signed_immed_24)
- #define EOP_B( signed_immed_24) EOP_C_B(A_COND_AL,0,signed_immed_24)
- #define EOP_BL(signed_immed_24) EOP_C_B(A_COND_AL,1,signed_immed_24)
- /* misc */
- #define EOP_C_MUL(cond,s,rd,rs,rm) \
- EMIT(((cond)<<28) | ((s)<<20) | ((rd)<<16) | ((rs)<<8) | 0x90 | (rm))
- #define EOP_C_UMULL(cond,s,rdhi,rdlo,rs,rm) \
- EMIT(((cond)<<28) | 0x00800000 | ((s)<<20) | ((rdhi)<<16) | ((rdlo)<<12) | ((rs)<<8) | 0x90 | (rm))
- #define EOP_C_SMULL(cond,s,rdhi,rdlo,rs,rm) \
- EMIT(((cond)<<28) | 0x00c00000 | ((s)<<20) | ((rdhi)<<16) | ((rdlo)<<12) | ((rs)<<8) | 0x90 | (rm))
- #define EOP_C_SMLAL(cond,s,rdhi,rdlo,rs,rm) \
- EMIT(((cond)<<28) | 0x00e00000 | ((s)<<20) | ((rdhi)<<16) | ((rdlo)<<12) | ((rs)<<8) | 0x90 | (rm))
- #define EOP_MUL(rd,rm,rs) EOP_C_MUL(A_COND_AL,0,rd,rs,rm) // note: rd != rm
- #define EOP_C_MRS(cond,rd) \
- EMIT(((cond)<<28) | 0x010f0000 | ((rd)<<12))
- #define EOP_C_MSR_IMM(cond,ror2,imm) \
- EMIT(((cond)<<28) | 0x0328f000 | ((ror2)<<8) | (imm)) // cpsr_f
- #define EOP_C_MSR_REG(cond,rm) \
- EMIT(((cond)<<28) | 0x0128f000 | (rm)) // cpsr_f
- #define EOP_MRS(rd) EOP_C_MRS(A_COND_AL,rd)
- #define EOP_MSR_IMM(ror2,imm) EOP_C_MSR_IMM(A_COND_AL,ror2,imm)
- #define EOP_MSR_REG(rm) EOP_C_MSR_REG(A_COND_AL,rm)
- #define EOP_MOVW(rd,imm) \
- EMIT(0xe3000000 | ((rd)<<12) | ((imm)&0xfff) | (((imm)<<4)&0xf0000))
- #define EOP_MOVT(rd,imm) \
- EMIT(0xe3400000 | ((rd)<<12) | (((imm)>>16)&0xfff) | (((imm)>>12)&0xf0000))
- static int count_bits(unsigned val)
- {
- val = (val & 0x55555555) + ((val >> 1) & 0x55555555);
- val = (val & 0x33333333) + ((val >> 2) & 0x33333333);
- val = (val & 0x0f0f0f0f) + ((val >> 4) & 0x0f0f0f0f);
- val = (val & 0x00ff00ff) + ((val >> 8) & 0x00ff00ff);
- return (val & 0xffff) + (val >> 16);
- }
- // XXX: RSB, *S will break if 1 insn is not enough
- static void emith_op_imm2(int cond, int s, int op, int rd, int rn, unsigned int imm)
- {
- int ror2;
- u32 v;
- switch (op) {
- case A_OP_MOV:
- rn = 0;
- // count bits in imm and use MVN if more bits 1 than 0
- if (count_bits(imm) > 16) {
- imm = ~imm;
- op = A_OP_MVN;
- }
- #ifdef HAVE_ARMV7
- for (v = imm, ror2 = 0; v && !(v & 3); v >>= 2)
- ror2--;
- if (v >> 8) {
- /* 2+ insns needed - prefer movw/movt */
- if (op == A_OP_MVN)
- imm = ~imm;
- EOP_MOVW(rd, imm);
- if (imm & 0xffff0000)
- EOP_MOVT(rd, imm);
- return;
- }
- #endif
- break;
- case A_OP_SUB:
- case A_OP_ADD:
- // count bits in imm and swap ADD and SUB if more bits 1 than 0
- if (s == 0 && count_bits(imm) > 16) {
- imm = -imm;
- op ^= (A_OP_ADD^A_OP_SUB);
- }
- case A_OP_EOR:
- case A_OP_ORR:
- case A_OP_BIC:
- if (s == 0 && imm == 0 && rd == rn)
- return;
- break;
- }
- again:
- v = imm, ror2 = 32/2; // arm imm shift is ROR, so rotate for best fit
- while ((v >> 24) && !(v & 0xc0))
- v = (v << 2) | (v >> 30), ror2++;
- do {
- // shift down to get 'best' rot2
- while (v > 0xff && !(v & 3))
- v >>= 2, ror2--;
- // AND must fit into 1 insn. if not, use BIC
- if (op == A_OP_AND && v != (v & 0xff)) {
- imm = ~imm;
- op = A_OP_BIC;
- goto again;
- }
- EOP_C_DOP_IMM(cond, op, s, rn, rd, ror2 & 0xf, v & 0xff);
- switch (op) {
- case A_OP_MOV: op = A_OP_ORR; break;
- case A_OP_MVN: op = A_OP_BIC; break;
- case A_OP_ADC: op = A_OP_ADD; break;
- case A_OP_SBC: op = A_OP_SUB; break;
- }
- rn = rd;
- v >>= 8, ror2 -= 8/2;
- } while (v);
- }
- #define emith_op_imm(cond, s, op, r, imm) \
- emith_op_imm2(cond, s, op, r, r, imm)
- // test op
- #define emith_top_imm(cond, op, r, imm) do { \
- u32 ror2, v; \
- for (ror2 = 0, v = imm; v && !(v & 3); v >>= 2) \
- ror2--; \
- EOP_C_DOP_IMM(cond, op, 1, r, 0, ror2 & 0x0f, v & 0xff); \
- } while (0)
- #define is_offset_24(val) \
- ((val) >= (int)0xff000000 && (val) <= 0x00ffffff)
- static int emith_xbranch(int cond, void *target, int is_call)
- {
- int val = (u32 *)target - (u32 *)tcache_ptr - 2;
- int direct = is_offset_24(val);
- u32 *start_ptr = (u32 *)tcache_ptr;
- if (direct)
- {
- EOP_C_B(cond,is_call,val & 0xffffff); // b, bl target
- }
- else
- {
- #ifdef __EPOC32__
- // elprintf(EL_SVP, "emitting indirect jmp %08x->%08x", tcache_ptr, target);
- if (is_call)
- EOP_ADD_IMM(14,15,0,8); // add lr,pc,#8
- EOP_C_AM2_IMM(cond,1,0,1,15,15,0); // ldrcc pc,[pc]
- EOP_MOV_REG_SIMPLE(15,15); // mov pc, pc
- EMIT((u32)target);
- #else
- // should never happen
- elprintf(EL_STATUS|EL_SVP|EL_ANOMALY, "indirect jmp %08x->%08x", target, tcache_ptr);
- exit(1);
- #endif
- }
- return (u32 *)tcache_ptr - start_ptr;
- }
- #define JMP_POS(ptr) \
- ptr = tcache_ptr; \
- tcache_ptr += sizeof(u32)
- #define JMP_EMIT(cond, ptr) { \
- u32 val_ = (u32 *)tcache_ptr - (u32 *)(ptr) - 2; \
- EOP_C_B_PTR(ptr, cond, 0, val_ & 0xffffff); \
- }
- #define EMITH_JMP_START(cond) { \
- void *cond_ptr; \
- JMP_POS(cond_ptr)
- #define EMITH_JMP_END(cond) \
- JMP_EMIT(cond, cond_ptr); \
- }
- // fake "simple" or "short" jump - using cond insns instead
- #define EMITH_NOTHING1(cond) \
- (void)(cond)
- #define EMITH_SJMP_DECL_()
- #define EMITH_SJMP_START_(cond) EMITH_NOTHING1(cond)
- #define EMITH_SJMP_END_(cond) EMITH_NOTHING1(cond)
- #define EMITH_SJMP_START(cond) EMITH_NOTHING1(cond)
- #define EMITH_SJMP_END(cond) EMITH_NOTHING1(cond)
- #define EMITH_SJMP2_START(cond) EMITH_NOTHING1(cond)
- #define EMITH_SJMP2_MID(cond) EMITH_JMP_START((cond)^1) // inverse cond
- #define EMITH_SJMP2_END(cond) EMITH_JMP_END((cond)^1)
- #define EMITH_SJMP3_START(cond) EMITH_NOTHING1(cond)
- #define EMITH_SJMP3_MID(cond) EMITH_NOTHING1(cond)
- #define EMITH_SJMP3_END()
- #define emith_move_r_r(d, s) \
- EOP_MOV_REG_SIMPLE(d, s)
- #define emith_move_r_r_ptr(d, s) \
- emith_move_r_r(d, s)
- #define emith_mvn_r_r(d, s) \
- EOP_MVN_REG(A_COND_AL,0,d,s,A_AM1_LSL,0)
- #define emith_add_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_ADD_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_add_r_r_r_lsl_ptr(d, s1, s2, lslimm) \
- emith_add_r_r_r_lsl(d, s1, s2, lslimm)
- #define emith_addf_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_ADD_REG(A_COND_AL,1,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_addf_r_r_r_lsr(d, s1, s2, lslimm) \
- EOP_ADD_REG(A_COND_AL,1,d,s1,s2,A_AM1_LSR,lslimm)
- #define emith_adcf_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_ADC_REG(A_COND_AL,1,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_sub_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_SUB_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_subf_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_SUB_REG(A_COND_AL,1,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_sbcf_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_SBC_REG(A_COND_AL,1,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_or_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_ORR_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_eor_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_EOR_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_eor_r_r_r_lsr(d, s1, s2, lsrimm) \
- EOP_EOR_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSR,lsrimm)
- #define emith_and_r_r_r_lsl(d, s1, s2, lslimm) \
- EOP_AND_REG(A_COND_AL,0,d,s1,s2,A_AM1_LSL,lslimm)
- #define emith_or_r_r_lsl(d, s, lslimm) \
- emith_or_r_r_r_lsl(d, d, s, lslimm)
- #define emith_eor_r_r_lsr(d, s, lsrimm) \
- emith_eor_r_r_r_lsr(d, d, s, lsrimm)
- #define emith_add_r_r_r(d, s1, s2) \
- emith_add_r_r_r_lsl(d, s1, s2, 0)
- #define emith_addf_r_r_r(d, s1, s2) \
- emith_addf_r_r_r_lsl(d, s1, s2, 0)
- #define emith_adcf_r_r_r(d, s1, s2) \
- emith_adcf_r_r_r_lsl(d, s1, s2, 0)
- #define emith_sub_r_r_r(d, s1, s2) \
- emith_sub_r_r_r_lsl(d, s1, s2, 0)
- #define emith_subf_r_r_r(d, s1, s2) \
- emith_subf_r_r_r_lsl(d, s1, s2, 0)
- #define emith_sbcf_r_r_r(d, s1, s2) \
- emith_sbcf_r_r_r_lsl(d, s1, s2, 0)
- #define emith_or_r_r_r(d, s1, s2) \
- emith_or_r_r_r_lsl(d, s1, s2, 0)
- #define emith_eor_r_r_r(d, s1, s2) \
- emith_eor_r_r_r_lsl(d, s1, s2, 0)
- #define emith_and_r_r_r(d, s1, s2) \
- emith_and_r_r_r_lsl(d, s1, s2, 0)
- #define emith_add_r_r(d, s) \
- emith_add_r_r_r(d, d, s)
- #define emith_add_r_r_ptr(d, s) \
- emith_add_r_r_r(d, d, s)
- #define emith_sub_r_r(d, s) \
- emith_sub_r_r_r(d, d, s)
- #define emith_adc_r_r(d, s) \
- EOP_ADC_REG(A_COND_AL,0,d,d,s,A_AM1_LSL,0)
- #define emith_and_r_r_c(cond, d, s) \
- EOP_AND_REG(cond,0,d,d,s,A_AM1_LSL,0)
- #define emith_and_r_r(d, s) \
- EOP_AND_REG(A_COND_AL,0,d,d,s,A_AM1_LSL,0)
- #define emith_or_r_r(d, s) \
- emith_or_r_r_r(d, d, s)
- #define emith_eor_r_r(d, s) \
- emith_eor_r_r_r(d, d, s)
- #define emith_tst_r_r(d, s) \
- EOP_TST_REG(A_COND_AL,d,s,A_AM1_LSL,0)
- #define emith_tst_r_r_ptr(d, s) \
- emith_tst_r_r(d, s)
- #define emith_teq_r_r(d, s) \
- EOP_TEQ_REG(A_COND_AL,d,s,A_AM1_LSL,0)
- #define emith_cmp_r_r(d, s) \
- EOP_CMP_REG(A_COND_AL,d,s,A_AM1_LSL,0)
- #define emith_addf_r_r(d, s) \
- EOP_ADD_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
- #define emith_subf_r_r(d, s) \
- EOP_SUB_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
- #define emith_adcf_r_r(d, s) \
- EOP_ADC_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
- #define emith_sbcf_r_r(d, s) \
- EOP_SBC_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
- #define emith_eorf_r_r(d, s) \
- EOP_EOR_REG(A_COND_AL,1,d,d,s,A_AM1_LSL,0)
- #define emith_move_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_MOV, r, imm)
- #define emith_move_r_ptr_imm(r, imm) \
- emith_move_r_imm(r, (u32)(imm))
- #define emith_add_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_ADD, r, imm)
- #define emith_adc_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_ADC, r, imm)
- #define emith_adcf_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 1, A_OP_ADC, r, imm)
- #define emith_sub_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_SUB, r, imm)
- #define emith_bic_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_BIC, r, imm)
- #define emith_and_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_AND, r, imm)
- #define emith_or_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_ORR, r, imm)
- #define emith_eor_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 0, A_OP_EOR, r, imm)
- // note: only use 8bit imm for these
- #define emith_tst_r_imm(r, imm) \
- emith_top_imm(A_COND_AL, A_OP_TST, r, imm)
- #define emith_cmp_r_imm(r, imm) { \
- u32 op_ = A_OP_CMP, imm_ = (u8)imm; \
- if ((s8)imm_ < 0) { \
- imm_ = (u8)-imm_; \
- op_ = A_OP_CMN; \
- } \
- emith_top_imm(A_COND_AL, op_, r, imm_); \
- }
- #define emith_subf_r_imm(r, imm) \
- emith_op_imm(A_COND_AL, 1, A_OP_SUB, r, imm)
- #define emith_move_r_imm_c(cond, r, imm) \
- emith_op_imm(cond, 0, A_OP_MOV, r, imm)
- #define emith_add_r_imm_c(cond, r, imm) \
- emith_op_imm(cond, 0, A_OP_ADD, r, imm)
- #define emith_sub_r_imm_c(cond, r, imm) \
- emith_op_imm(cond, 0, A_OP_SUB, r, imm)
- #define emith_or_r_imm_c(cond, r, imm) \
- emith_op_imm(cond, 0, A_OP_ORR, r, imm)
- #define emith_eor_r_imm_c(cond, r, imm) \
- emith_op_imm(cond, 0, A_OP_EOR, r, imm)
- #define emith_bic_r_imm_c(cond, r, imm) \
- emith_op_imm(cond, 0, A_OP_BIC, r, imm)
- #define emith_tst_r_imm_c(cond, r, imm) \
- emith_top_imm(cond, A_OP_TST, r, imm)
- #define emith_move_r_imm_s8(r, imm) { \
- if ((s8)(imm) < 0) \
- EOP_MVN_IMM(r, 0, ((u8)(imm) ^ 0xff)); \
- else \
- EOP_MOV_IMM(r, 0, (u8)imm); \
- }
- #define emith_and_r_r_imm(d, s, imm) \
- emith_op_imm2(A_COND_AL, 0, A_OP_AND, d, s, imm)
- #define emith_add_r_r_imm(d, s, imm) \
- emith_op_imm2(A_COND_AL, 0, A_OP_ADD, d, s, imm)
- #define emith_add_r_r_ptr_imm(d, s, imm) \
- emith_add_r_r_imm(d, s, imm)
- #define emith_sub_r_r_imm(d, s, imm) \
- emith_op_imm2(A_COND_AL, 0, A_OP_SUB, d, s, imm)
- #define emith_subf_r_r_imm(d, s, imm) \
- emith_op_imm2(A_COND_AL, 1, A_OP_SUB, d, s, imm)
- #define emith_or_r_r_imm(d, s, imm) \
- emith_op_imm2(A_COND_AL, 0, A_OP_ORR, d, s, imm)
- #define emith_eor_r_r_imm(d, s, imm) \
- emith_op_imm2(A_COND_AL, 0, A_OP_EOR, d, s, imm)
- #define emith_neg_r_r(d, s) \
- EOP_RSB_IMM(d, s, 0, 0)
- #define emith_lsl(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_LSL,cnt)
- #define emith_lsr(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_LSR,cnt)
- #define emith_asr(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_ASR,cnt)
- #define emith_ror_c(cond, d, s, cnt) \
- EOP_MOV_REG(cond,0,d,s,A_AM1_ROR,cnt)
- #define emith_ror(d, s, cnt) \
- emith_ror_c(A_COND_AL, d, s, cnt)
- #define emith_rol(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,0,d,s,A_AM1_ROR,32-(cnt)); \
- #define emith_lslf(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_LSL,cnt)
- #define emith_lsrf(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_LSR,cnt)
- #define emith_asrf(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_ASR,cnt)
- // note: only C flag updated correctly
- #define emith_rolf(d, s, cnt) { \
- EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_ROR,32-(cnt)); \
- /* we don't have ROL so we shift to get the right carry */ \
- EOP_TST_REG(A_COND_AL,d,d,A_AM1_LSR,1); \
- }
- #define emith_rorf(d, s, cnt) \
- EOP_MOV_REG(A_COND_AL,1,d,s,A_AM1_ROR,cnt)
- #define emith_rolcf(d) \
- emith_adcf_r_r(d, d)
- #define emith_rorcf(d) \
- EOP_MOV_REG(A_COND_AL,1,d,d,A_AM1_ROR,0) /* ROR #0 -> RRX */
- #define emith_negcf_r_r(d, s) \
- EOP_C_DOP_IMM(A_COND_AL,A_OP_RSC,1,s,d,0,0)
- #define emith_mul(d, s1, s2) { \
- if ((d) != (s1)) /* rd != rm limitation */ \
- EOP_MUL(d, s1, s2); \
- else \
- EOP_MUL(d, s2, s1); \
- }
- #define emith_mul_u64(dlo, dhi, s1, s2) \
- EOP_C_UMULL(A_COND_AL,0,dhi,dlo,s1,s2)
- #define emith_mul_s64(dlo, dhi, s1, s2) \
- EOP_C_SMULL(A_COND_AL,0,dhi,dlo,s1,s2)
- #define emith_mula_s64_c(cond, dlo, dhi, s1, s2) \
- EOP_C_SMLAL(cond,0,dhi,dlo,s1,s2)
- #define emith_mula_s64(dlo, dhi, s1, s2) \
- EOP_C_SMLAL(A_COND_AL,0,dhi,dlo,s1,s2)
- // misc
- #define emith_read_r_r_offs_c(cond, r, rs, offs) \
- EOP_LDR_IMM2(cond, r, rs, offs)
- #define emith_read_r_r_offs_ptr_c(cond, r, rs, offs) \
- emith_read_r_r_offs_c(cond, r, rs, offs)
- #define emith_read_r_r_r_c(cond, r, rs, rm) \
- EOP_LDR_REG_LSL(cond, r, rs, rm, 0)
- #define emith_read_r_r_r(r, rs, rm) \
- EOP_LDR_REG_LSL(A_COND_AL, r, rs, rm, 0)
- #define emith_read8_r_r_offs_c(cond, r, rs, offs) \
- EOP_LDRB_IMM2(cond, r, rs, offs)
- #define emith_read8_r_r_r_c(cond, r, rs, rm) \
- EOP_LDRB_REG_LSL(cond, r, rs, rm, 0)
- #define emith_read8_r_r_r(r, rs, rm) \
- EOP_LDRB_REG_LSL(A_COND_AL, r, rs, rm, 0)
- #define emith_read16_r_r_offs_c(cond, r, rs, offs) \
- EOP_LDRH_IMM2(cond, r, rs, offs)
- #define emith_read16_r_r_r_c(cond, r, rs, rm) \
- EOP_LDRH_REG2(cond, r, rs, rm)
- #define emith_read16_r_r_r(r, rs, rm) \
- EOP_LDRH_REG2(A_COND_AL, r, rs, rm)
- #define emith_read_r_r_offs(r, rs, offs) \
- emith_read_r_r_offs_c(A_COND_AL, r, rs, offs)
- #define emith_read8s_r_r_offs(r, rs, offs) \
- EOP_LDRSB_IMM2(A_COND_AL, r, rs, offs)
- #define emith_read8_r_r_offs(r, rs, offs) \
- emith_read8_r_r_offs_c(A_COND_AL, r, rs, offs)
- #define emith_read16s_r_r_offs(r, rs, offs) \
- EOP_LDRSH_IMM2(A_COND_AL, r, rs, offs)
- #define emith_read16_r_r_offs(r, rs, offs) \
- emith_read16_r_r_offs_c(A_COND_AL, r, rs, offs)
- #define emith_write_r_r_offs_c(cond, r, rs, offs) \
- EOP_STR_IMM2(cond, r, rs, offs)
- #define emith_write_r_r_offs_ptr_c(cond, r, rs, offs) \
- emith_write_r_r_offs_c(cond, r, rs, offs)
- #define emith_ctx_read_c(cond, r, offs) \
- emith_read_r_r_offs_c(cond, r, CONTEXT_REG, offs)
- #define emith_ctx_read(r, offs) \
- emith_ctx_read_c(A_COND_AL, r, offs)
- #define emith_ctx_read_ptr(r, offs) \
- emith_ctx_read(r, offs)
- #define emith_ctx_write(r, offs) \
- EOP_STR_IMM(r, CONTEXT_REG, offs)
- #define emith_ctx_do_multiple(op, r, offs, count, tmpr) do { \
- int v_, r_ = r, c_ = count, b_ = CONTEXT_REG; \
- for (v_ = 0; c_; c_--, r_++) \
- v_ |= 1 << r_; \
- if ((offs) != 0) { \
- EOP_ADD_IMM(tmpr,CONTEXT_REG,30/2,(offs)>>2);\
- b_ = tmpr; \
- } \
- op(b_,v_); \
- } while(0)
- #define emith_ctx_read_multiple(r, offs, count, tmpr) \
- emith_ctx_do_multiple(EOP_LDMIA, r, offs, count, tmpr)
- #define emith_ctx_write_multiple(r, offs, count, tmpr) \
- emith_ctx_do_multiple(EOP_STMIA, r, offs, count, tmpr)
- #define emith_clear_msb_c(cond, d, s, count) { \
- u32 t; \
- if ((count) <= 8) { \
- t = 8 - (count); \
- t = (0xff << t) & 0xff; \
- EOP_C_DOP_IMM(cond,A_OP_BIC,0,s,d,8/2,t); \
- } else if ((count) >= 24) { \
- t = (count) - 24; \
- t = 0xff >> t; \
- EOP_C_DOP_IMM(cond,A_OP_AND,0,s,d,0,t); \
- } else { \
- EOP_MOV_REG(cond,0,d,s,A_AM1_LSL,count); \
- EOP_MOV_REG(cond,0,d,d,A_AM1_LSR,count); \
- } \
- }
- #define emith_clear_msb(d, s, count) \
- emith_clear_msb_c(A_COND_AL, d, s, count)
- #define emith_sext(d, s, bits) { \
- EOP_MOV_REG_LSL(d,s,32 - (bits)); \
- EOP_MOV_REG_ASR(d,d,32 - (bits)); \
- }
- #define emith_do_caller_regs(mask, func) { \
- u32 _reg_mask = (mask) & 0x500f; \
- if (_reg_mask) { \
- if (__builtin_parity(_reg_mask) == 1) \
- _reg_mask |= 0x10; /* eabi align */ \
- func(_reg_mask); \
- } \
- }
- #define emith_save_caller_regs(mask) \
- emith_do_caller_regs(mask, EOP_STMFD_SP)
- #define emith_restore_caller_regs(mask) \
- emith_do_caller_regs(mask, EOP_LDMFD_SP)
- // upto 4 args
- #define emith_pass_arg_r(arg, reg) \
- EOP_MOV_REG_SIMPLE(arg, reg)
- #define emith_pass_arg_imm(arg, imm) \
- emith_move_r_imm(arg, imm)
- #define emith_jump(target) \
- emith_jump_cond(A_COND_AL, target)
- #define emith_jump_patchable(target) \
- emith_jump(target)
- #define emith_jump_cond(cond, target) \
- emith_xbranch(cond, target, 0)
- #define emith_jump_cond_patchable(cond, target) \
- emith_jump_cond(cond, target)
- #define emith_jump_patch(ptr, target) do { \
- u32 *ptr_ = ptr; \
- u32 val_ = (u32 *)(target) - ptr_ - 2; \
- *ptr_ = (*ptr_ & 0xff000000) | (val_ & 0x00ffffff); \
- } while (0)
- #define emith_jump_at(ptr, target) { \
- u32 val_ = (u32 *)(target) - (u32 *)(ptr) - 2; \
- EOP_C_B_PTR(ptr, A_COND_AL, 0, val_ & 0xffffff); \
- }
- #define emith_jump_reg_c(cond, r) \
- EOP_C_BX(cond, r)
- #define emith_jump_reg(r) \
- emith_jump_reg_c(A_COND_AL, r)
- #define emith_jump_ctx_c(cond, offs) \
- EOP_LDR_IMM2(cond,15,CONTEXT_REG,offs)
- #define emith_jump_ctx(offs) \
- emith_jump_ctx_c(A_COND_AL, offs)
- #define emith_call_cond(cond, target) \
- emith_xbranch(cond, target, 1)
- #define emith_call(target) \
- emith_call_cond(A_COND_AL, target)
- #define emith_call_ctx(offs) { \
- emith_move_r_r(14, 15); \
- emith_jump_ctx(offs); \
- }
- #define emith_ret_c(cond) \
- emith_jump_reg_c(cond, 14)
- #define emith_ret() \
- emith_ret_c(A_COND_AL)
- #define emith_ret_to_ctx(offs) \
- emith_ctx_write(14, offs)
- #define emith_push_ret() \
- EOP_STMFD_SP(A_R14M)
- #define emith_pop_and_ret() \
- EOP_LDMFD_SP(A_R15M)
- #define host_instructions_updated(base, end) \
- cache_flush_d_inval_i(base, end)
- #define host_arg2reg(rd, arg) \
- rd = arg
- /* SH2 drc specific */
- /* pushes r12 for eabi alignment */
- #define emith_sh2_drc_entry() \
- EOP_STMFD_SP(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R12M|A_R14M)
- #define emith_sh2_drc_exit() \
- EOP_LDMFD_SP(A_R4M|A_R5M|A_R6M|A_R7M|A_R8M|A_R9M|A_R10M|A_R11M|A_R12M|A_R15M)
- // assumes a is in arg0, tab, func and mask are temp
- #define emith_sh2_rcall(a, tab, func, mask) { \
- emith_lsr(mask, a, SH2_READ_SHIFT); \
- EOP_ADD_REG_LSL(tab, tab, mask, 3); \
- if (func < mask) EOP_LDMIA(tab, (1<<func)|(1<<mask)); /* ldm if possible */ \
- else { emith_read_r_r_offs(func, tab, 0); \
- emith_read_r_r_offs(mask, tab, 4); } \
- emith_addf_r_r_r(func,func,func); \
- }
- // assumes a, val are in arg0 and arg1, tab and func are temp
- #define emith_sh2_wcall(a, val, tab, func) { \
- emith_lsr(func, a, SH2_WRITE_SHIFT); \
- EOP_LDR_REG_LSL(A_COND_AL,func,tab,func,2); \
- emith_move_r_r(2, CONTEXT_REG); /* arg2 */ \
- emith_jump_reg(func); \
- }
- #define emith_sh2_dtbf_loop() { \
- int cr, rn; \
- int tmp_ = rcache_get_tmp(); \
- cr = rcache_get_reg(SHR_SR, RC_GR_RMW); \
- rn = rcache_get_reg((op >> 8) & 0x0f, RC_GR_RMW); \
- emith_sub_r_imm(rn, 1); /* sub rn, #1 */ \
- emith_bic_r_imm(cr, 1); /* bic cr, #1 */ \
- emith_sub_r_imm(cr, (cycles+1) << 12); /* sub cr, #(cycles+1)<<12 */ \
- cycles = 0; \
- emith_asrf(tmp_, cr, 2+12); /* movs tmp_, cr, asr #2+12 */\
- EOP_MOV_IMM_C(A_COND_MI,tmp_,0,0); /* movmi tmp_, #0 */ \
- emith_lsl(cr, cr, 20); /* mov cr, cr, lsl #20 */ \
- emith_lsr(cr, cr, 20); /* mov cr, cr, lsr #20 */ \
- emith_subf_r_r(rn, tmp_); /* subs rn, tmp_ */ \
- EOP_RSB_IMM_C(A_COND_LS,tmp_,rn,0,0); /* rsbls tmp_, rn, #0 */ \
- EOP_ORR_REG(A_COND_LS,0,cr,cr,tmp_,A_AM1_LSL,12+2); /* orrls cr,tmp_,lsl #12+2 */\
- EOP_ORR_IMM_C(A_COND_LS,cr,cr,0,1); /* orrls cr, #1 */ \
- EOP_MOV_IMM_C(A_COND_LS,rn,0,0); /* movls rn, #0 */ \
- rcache_free_tmp(tmp_); \
- }
- #define emith_write_sr(sr, srcr) { \
- emith_lsr(sr, sr, 10); \
- emith_or_r_r_r_lsl(sr, sr, srcr, 22); \
- emith_ror(sr, sr, 22); \
- }
- #define emith_carry_to_t(srr, is_sub) { \
- if (is_sub) { /* has inverted C on ARM */ \
- emith_or_r_imm_c(A_COND_CC, srr, 1); \
- emith_bic_r_imm_c(A_COND_CS, srr, 1); \
- } else { \
- emith_or_r_imm_c(A_COND_CS, srr, 1); \
- emith_bic_r_imm_c(A_COND_CC, srr, 1); \
- } \
- }
- #define emith_tpop_carry(sr, is_sub) { \
- if (is_sub) \
- emith_eor_r_imm(sr, 1); \
- emith_lsrf(sr, sr, 1); \
- }
- #define emith_tpush_carry(sr, is_sub) { \
- emith_adc_r_r(sr, sr); \
- if (is_sub) \
- emith_eor_r_imm(sr, 1); \
- }
- /*
- * if Q
- * t = carry(Rn += Rm)
- * else
- * t = carry(Rn -= Rm)
- * T ^= t
- */
- #define emith_sh2_div1_step(rn, rm, sr) { \
- void *jmp0, *jmp1; \
- emith_tst_r_imm(sr, Q); /* if (Q ^ M) */ \
- JMP_POS(jmp0); /* beq do_sub */ \
- emith_addf_r_r(rn, rm); \
- emith_eor_r_imm_c(A_COND_CS, sr, T); \
- JMP_POS(jmp1); /* b done */ \
- JMP_EMIT(A_COND_EQ, jmp0); /* do_sub: */ \
- emith_subf_r_r(rn, rm); \
- emith_eor_r_imm_c(A_COND_CC, sr, T); \
- JMP_EMIT(A_COND_AL, jmp1); /* done: */ \
- }
- /* mh:ml += rn*rm, does saturation if required by S bit. rn, rm must be TEMP */
- #define emith_sh2_macl(ml, mh, rn, rm, sr) do { \
- emith_tst_r_imm(sr, S); \
- EMITH_SJMP2_START(DCOND_NE); \
- emith_mula_s64_c(DCOND_EQ, ml, mh, rn, rm); \
- EMITH_SJMP2_MID(DCOND_NE); \
- /* MACH top 16 bits unused if saturated. sign ext for overfl detect */ \
- emith_sext(mh, mh, 16); \
- emith_mula_s64(ml, mh, rn, rm); \
- /* overflow if top 17 bits of MACH aren't all 1 or 0 */ \
- /* to check: add MACH[15] to MACH[31:16]. this is 0 if no overflow */ \
- emith_asrf(rn, mh, 16); /* sum = (MACH>>16) + ((MACH>>15)&1) */ \
- emith_adcf_r_imm(rn, 0); /* (MACH>>15) is in carry after shift */ \
- EMITH_SJMP_START(DCOND_EQ); /* sum != 0 -> ov */ \
- emith_move_r_imm_c(DCOND_NE, ml, 0x0000); /* -overflow */ \
- emith_move_r_imm_c(DCOND_NE, mh, 0x8000); \
- EMITH_SJMP_START(DCOND_LE); /* sum > 0 -> +ovl */ \
- emith_sub_r_imm_c(DCOND_GT, ml, 1); /* 0xffffffff */ \
- emith_sub_r_imm_c(DCOND_GT, mh, 1); /* 0x00007fff */ \
- EMITH_SJMP_END(DCOND_LE); \
- EMITH_SJMP_END(DCOND_EQ); \
- EMITH_SJMP2_END(DCOND_NE); \
- } while (0)
- /* mh:ml += rn*rm, does saturation if required by S bit. rn, rm must be TEMP */
- #define emith_sh2_macw(ml, mh, rn, rm, sr) do { \
- emith_sext(rn, rn, 16); \
- emith_sext(rm, rm, 16); \
- emith_tst_r_imm(sr, S); \
- EMITH_SJMP2_START(DCOND_NE); \
- emith_mula_s64_c(DCOND_EQ, ml, mh, rn, rm); \
- EMITH_SJMP2_MID(DCOND_NE); \
- /* XXX: MACH should be untouched when S is set? */ \
- emith_asr(mh, ml, 31); /* sign ext MACL to MACH for ovrfl check */ \
- emith_mula_s64(ml, mh, rn, rm); \
- /* overflow if top 33 bits of MACH:MACL aren't all 1 or 0 */ \
- /* to check: add MACL[31] to MACH. this is 0 if no overflow */ \
- emith_addf_r_r_r_lsr(mh, mh, ml, 31); /* sum = MACH + ((MACL>>31)&1) */\
- EMITH_SJMP_START(DCOND_EQ); /* sum != 0 -> overflow */ \
- /* XXX: LSB signalling only in SH1, or in SH2 too? */ \
- emith_move_r_imm_c(DCOND_NE, mh, 0x00000001); /* LSB of MACH */ \
- emith_move_r_imm_c(DCOND_NE, ml, 0x80000000); /* negative ovrfl */ \
- EMITH_SJMP_START(DCOND_LE); /* sum > 0 -> positive ovrfl */ \
- emith_sub_r_imm_c(DCOND_GT, ml, 1); /* 0x7fffffff */ \
- EMITH_SJMP_END(DCOND_LE); \
- EMITH_SJMP_END(DCOND_EQ); \
- EMITH_SJMP2_END(DCOND_NE); \
- } while (0)
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