diff options
Diffstat (limited to 'py/asmx86.c')
| -rw-r--r-- | py/asmx86.c | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/py/asmx86.c b/py/asmx86.c index 8a08c68a0..05783354e 100644 --- a/py/asmx86.c +++ b/py/asmx86.c @@ -41,13 +41,13 @@ #define OPCODE_NOP (0x90) #define OPCODE_PUSH_R32 (0x50) -//#define OPCODE_PUSH_I32 (0x68) -//#define OPCODE_PUSH_M32 (0xff) /* /6 */ +// #define OPCODE_PUSH_I32 (0x68) +// #define OPCODE_PUSH_M32 (0xff) /* /6 */ #define OPCODE_POP_R32 (0x58) #define OPCODE_RET (0xc3) -//#define OPCODE_MOV_I8_TO_R8 (0xb0) /* +rb */ +// #define OPCODE_MOV_I8_TO_R8 (0xb0) /* +rb */ #define OPCODE_MOV_I32_TO_R32 (0xb8) -//#define OPCODE_MOV_I32_TO_RM32 (0xc7) +// #define OPCODE_MOV_I32_TO_RM32 (0xc7) #define OPCODE_MOV_R8_TO_RM8 (0x88) /* /r */ #define OPCODE_MOV_R32_TO_RM32 (0x89) /* /r */ #define OPCODE_MOV_RM32_TO_R32 (0x8b) /* /r */ @@ -63,15 +63,15 @@ #define OPCODE_SUB_R32_FROM_RM32 (0x29) #define OPCODE_SUB_I32_FROM_RM32 (0x81) /* /5 */ #define OPCODE_SUB_I8_FROM_RM32 (0x83) /* /5 */ -//#define OPCODE_SHL_RM32_BY_I8 (0xc1) /* /4 */ -//#define OPCODE_SHR_RM32_BY_I8 (0xc1) /* /5 */ -//#define OPCODE_SAR_RM32_BY_I8 (0xc1) /* /7 */ +// #define OPCODE_SHL_RM32_BY_I8 (0xc1) /* /4 */ +// #define OPCODE_SHR_RM32_BY_I8 (0xc1) /* /5 */ +// #define OPCODE_SAR_RM32_BY_I8 (0xc1) /* /7 */ #define OPCODE_SHL_RM32_CL (0xd3) /* /4 */ #define OPCODE_SAR_RM32_CL (0xd3) /* /7 */ -//#define OPCODE_CMP_I32_WITH_RM32 (0x81) /* /7 */ -//#define OPCODE_CMP_I8_WITH_RM32 (0x83) /* /7 */ +// #define OPCODE_CMP_I32_WITH_RM32 (0x81) /* /7 */ +// #define OPCODE_CMP_I8_WITH_RM32 (0x83) /* /7 */ #define OPCODE_CMP_R32_WITH_RM32 (0x39) -//#define OPCODE_CMP_RM32_WITH_R32 (0x3b) +// #define OPCODE_CMP_RM32_WITH_R32 (0x3b) #define OPCODE_TEST_R8_WITH_RM8 (0x84) /* /r */ #define OPCODE_JMP_REL8 (0xeb) #define OPCODE_JMP_REL32 (0xe9) @@ -101,14 +101,14 @@ #define SIGNED_FIT8(x) (((x) & 0xffffff80) == 0) || (((x) & 0xffffff80) == 0xffffff80) STATIC void asm_x86_write_byte_1(asm_x86_t *as, byte b1) { - byte* c = mp_asm_base_get_cur_to_write_bytes(&as->base, 1); + byte *c = mp_asm_base_get_cur_to_write_bytes(&as->base, 1); if (c != NULL) { c[0] = b1; } } STATIC void asm_x86_write_byte_2(asm_x86_t *as, byte b1, byte b2) { - byte* c = mp_asm_base_get_cur_to_write_bytes(&as->base, 2); + byte *c = mp_asm_base_get_cur_to_write_bytes(&as->base, 2); if (c != NULL) { c[0] = b1; c[1] = b2; @@ -116,7 +116,7 @@ STATIC void asm_x86_write_byte_2(asm_x86_t *as, byte b1, byte b2) { } STATIC void asm_x86_write_byte_3(asm_x86_t *as, byte b1, byte b2, byte b3) { - byte* c = mp_asm_base_get_cur_to_write_bytes(&as->base, 3); + byte *c = mp_asm_base_get_cur_to_write_bytes(&as->base, 3); if (c != NULL) { c[0] = b1; c[1] = b2; @@ -125,7 +125,7 @@ STATIC void asm_x86_write_byte_3(asm_x86_t *as, byte b1, byte b2, byte b3) { } STATIC void asm_x86_write_word32(asm_x86_t *as, int w32) { - byte* c = mp_asm_base_get_cur_to_write_bytes(&as->base, 4); + byte *c = mp_asm_base_get_cur_to_write_bytes(&as->base, 4); if (c != NULL) { c[0] = IMM32_L0(w32); c[1] = IMM32_L1(w32); @@ -250,11 +250,11 @@ void asm_x86_xor_r32_r32(asm_x86_t *as, int dest_r32, int src_r32) { asm_x86_generic_r32_r32(as, dest_r32, src_r32, OPCODE_XOR_R32_TO_RM32); } -void asm_x86_shl_r32_cl(asm_x86_t* as, int dest_r32) { +void asm_x86_shl_r32_cl(asm_x86_t *as, int dest_r32) { asm_x86_generic_r32_r32(as, dest_r32, 4, OPCODE_SHL_RM32_CL); } -void asm_x86_sar_r32_cl(asm_x86_t* as, int dest_r32) { +void asm_x86_sar_r32_cl(asm_x86_t *as, int dest_r32) { asm_x86_generic_r32_r32(as, dest_r32, 7, OPCODE_SAR_RM32_CL); } @@ -358,7 +358,7 @@ void asm_x86_jmp_label(asm_x86_t *as, mp_uint_t label) { } } else { // is a forwards jump, so need to assume it's large - large_jump: + large_jump: rel -= 5; asm_x86_write_byte_1(as, OPCODE_JMP_REL32); asm_x86_write_word32(as, rel); @@ -380,7 +380,7 @@ void asm_x86_jcc_label(asm_x86_t *as, mp_uint_t jcc_type, mp_uint_t label) { } } else { // is a forwards jump, so need to assume it's large - large_jump: + large_jump: rel -= 6; asm_x86_write_byte_2(as, OPCODE_JCC_REL32_A, OPCODE_JCC_REL32_B | jcc_type); asm_x86_write_word32(as, rel); @@ -462,8 +462,7 @@ void asm_x86_push_local(asm_x86_t *as, int local_num) { asm_x86_push_disp(as, ASM_X86_REG_EBP, asm_x86_local_offset_from_ebp(as, local_num)); } -void asm_x86_push_local_addr(asm_x86_t *as, int local_num, int temp_r32) -{ +void asm_x86_push_local_addr(asm_x86_t *as, int local_num, int temp_r32) { asm_x86_mov_r32_r32(as, temp_r32, ASM_X86_REG_EBP); asm_x86_add_i32_to_r32(as, asm_x86_local_offset_from_ebp(as, local_num), temp_r32); asm_x86_push_r32(as, temp_r32); @@ -488,14 +487,14 @@ void asm_x86_call_ind(asm_x86_t *as, void *ptr, mp_uint_t n_args, int temp_r32) if (n_args > 0) { asm_x86_push_r32(as, ASM_X86_REG_ARG_1); } -#ifdef __LP64__ + #ifdef __LP64__ // We wouldn't run x86 code on an x64 machine. This is here to enable // testing of the x86 emitter only. asm_x86_mov_i32_to_r32(as, (int32_t)(int64_t)ptr, temp_r32); -#else + #else // If we get here, sizeof(int) == sizeof(void*). asm_x86_mov_i32_to_r32(as, (int32_t)ptr, temp_r32); -#endif + #endif asm_x86_write_byte_2(as, OPCODE_CALL_RM32, MODRM_R32(2) | MODRM_RM_REG | MODRM_RM_R32(temp_r32)); // this reduces code size by 2 bytes per call, but doesn't seem to speed it up at all /* |