diff options
Diffstat (limited to 'src/3rdparty/pcre2/src/sljit/sljitNativeX86_32.c')
-rw-r--r-- | src/3rdparty/pcre2/src/sljit/sljitNativeX86_32.c | 1430 |
1 files changed, 900 insertions, 530 deletions
diff --git a/src/3rdparty/pcre2/src/sljit/sljitNativeX86_32.c b/src/3rdparty/pcre2/src/sljit/sljitNativeX86_32.c index 79a7e8bba5..08da03026d 100644 --- a/src/3rdparty/pcre2/src/sljit/sljitNativeX86_32.c +++ b/src/3rdparty/pcre2/src/sljit/sljitNativeX86_32.c @@ -26,6 +26,10 @@ /* x86 32-bit arch dependent functions. */ +/* --------------------------------------------------------------------- */ +/* Operators */ +/* --------------------------------------------------------------------- */ + static sljit_s32 emit_do_imm(struct sljit_compiler *compiler, sljit_u8 opcode, sljit_sw imm) { sljit_u8 *inst; @@ -38,314 +42,8 @@ static sljit_s32 emit_do_imm(struct sljit_compiler *compiler, sljit_u8 opcode, s return SLJIT_SUCCESS; } -static sljit_u8* generate_far_jump_code(struct sljit_jump *jump, sljit_u8 *code_ptr, sljit_sw executable_offset) -{ - sljit_s32 type = jump->flags >> TYPE_SHIFT; - - if (type == SLJIT_JUMP) { - *code_ptr++ = JMP_i32; - jump->addr++; - } - else if (type >= SLJIT_FAST_CALL) { - *code_ptr++ = CALL_i32; - jump->addr++; - } - else { - *code_ptr++ = GROUP_0F; - *code_ptr++ = get_jump_code(type); - jump->addr += 2; - } - - if (jump->flags & JUMP_LABEL) - jump->flags |= PATCH_MW; - else - sljit_unaligned_store_sw(code_ptr, jump->u.target - (jump->addr + 4) - (sljit_uw)executable_offset); - code_ptr += 4; - - return code_ptr; -} - -SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler, - sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, - sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) -{ - sljit_s32 args, size; - sljit_u8 *inst; - - CHECK_ERROR(); - CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); - set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); - - /* Emit ENDBR32 at function entry if needed. */ - FAIL_IF(emit_endbranch(compiler)); - - args = get_arg_count(arg_types); - compiler->args = args; - - /* [esp+0] for saving temporaries and function calls. */ - compiler->stack_tmp_size = 2 * sizeof(sljit_sw); - -#if !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if (scratches > 3) - compiler->stack_tmp_size = 3 * sizeof(sljit_sw); -#endif - - compiler->saveds_offset = compiler->stack_tmp_size; - if (scratches > 3) - compiler->saveds_offset += ((scratches > (3 + 6)) ? 6 : (scratches - 3)) * sizeof(sljit_sw); - - compiler->locals_offset = compiler->saveds_offset; - - if (saveds > 3) - compiler->locals_offset += (saveds - 3) * sizeof(sljit_sw); - - if (options & SLJIT_F64_ALIGNMENT) - compiler->locals_offset = (compiler->locals_offset + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1); - - size = 1 + (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3); -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - size += (args > 0 ? (args * 2) : 0) + (args > 2 ? 2 : 0); -#else - size += (args > 0 ? (2 + args * 3) : 0); -#endif - inst = (sljit_u8*)ensure_buf(compiler, 1 + size); - FAIL_IF(!inst); - - INC_SIZE(size); - PUSH_REG(reg_map[TMP_REG1]); -#if !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if (args > 0) { - *inst++ = MOV_r_rm; - *inst++ = MOD_REG | (reg_map[TMP_REG1] << 3) | 0x4 /* esp */; - } -#endif - if (saveds > 2 || scratches > 9) - PUSH_REG(reg_map[SLJIT_S2]); - if (saveds > 1 || scratches > 10) - PUSH_REG(reg_map[SLJIT_S1]); - if (saveds > 0 || scratches > 11) - PUSH_REG(reg_map[SLJIT_S0]); - -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if (args > 0) { - inst[0] = MOV_r_rm; - inst[1] = MOD_REG | (reg_map[SLJIT_S0] << 3) | reg_map[SLJIT_R2]; - inst += 2; - } - if (args > 1) { - inst[0] = MOV_r_rm; - inst[1] = MOD_REG | (reg_map[SLJIT_S1] << 3) | reg_map[SLJIT_R1]; - inst += 2; - } - if (args > 2) { - inst[0] = MOV_r_rm; - inst[1] = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | 0x4 /* esp */; - inst[2] = 0x24; - inst[3] = sizeof(sljit_sw) * (3 + 2); /* saveds >= 3 as well. */ - } -#else - if (args > 0) { - inst[0] = MOV_r_rm; - inst[1] = MOD_DISP8 | (reg_map[SLJIT_S0] << 3) | reg_map[TMP_REG1]; - inst[2] = sizeof(sljit_sw) * 2; - inst += 3; - } - if (args > 1) { - inst[0] = MOV_r_rm; - inst[1] = MOD_DISP8 | (reg_map[SLJIT_S1] << 3) | reg_map[TMP_REG1]; - inst[2] = sizeof(sljit_sw) * 3; - inst += 3; - } - if (args > 2) { - inst[0] = MOV_r_rm; - inst[1] = MOD_DISP8 | (reg_map[SLJIT_S2] << 3) | reg_map[TMP_REG1]; - inst[2] = sizeof(sljit_sw) * 4; - } -#endif - - SLJIT_ASSERT(SLJIT_LOCALS_OFFSET > 0); - -#if defined(__APPLE__) - /* Ignore pushed registers and SLJIT_LOCALS_OFFSET when computing the aligned local size. */ - saveds = (2 + (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw); - local_size = ((SLJIT_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds; -#else - if (options & SLJIT_F64_ALIGNMENT) - local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1)); - else - local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_sw) - 1) & ~(sizeof(sljit_sw) - 1)); -#endif - - compiler->local_size = local_size; - -#ifdef _WIN32 - if (local_size > 0) { - if (local_size <= 4 * 4096) { - if (local_size > 4096) - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -4096); - if (local_size > 2 * 4096) - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -4096 * 2); - if (local_size > 3 * 4096) - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -4096 * 3); - } - else { - EMIT_MOV(compiler, SLJIT_R0, 0, SLJIT_SP, 0); - EMIT_MOV(compiler, SLJIT_R1, 0, SLJIT_IMM, (local_size - 1) >> 12); - - SLJIT_ASSERT (reg_map[SLJIT_R0] == 0); - - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_R0), -4096); - FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), - SLJIT_R0, 0, SLJIT_R0, 0, SLJIT_IMM, 4096)); - FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), - SLJIT_R1, 0, SLJIT_R1, 0, SLJIT_IMM, 1)); - - inst = (sljit_u8*)ensure_buf(compiler, 1 + 2); - FAIL_IF(!inst); - - INC_SIZE(2); - inst[0] = JNE_i8; - inst[1] = (sljit_s8) -16; - } - - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -local_size); - } -#endif - - SLJIT_ASSERT(local_size > 0); - -#if !defined(__APPLE__) - if (options & SLJIT_F64_ALIGNMENT) { - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_SP, 0); - - /* Some space might allocated during sljit_grow_stack() above on WIN32. */ - FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size + sizeof(sljit_sw))); - -#if defined _WIN32 && !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if (compiler->local_size > 1024) - FAIL_IF(emit_cum_binary(compiler, BINARY_OPCODE(ADD), - TMP_REG1, 0, TMP_REG1, 0, SLJIT_IMM, sizeof(sljit_sw))); -#endif - - inst = (sljit_u8*)ensure_buf(compiler, 1 + 6); - FAIL_IF(!inst); - - INC_SIZE(6); - inst[0] = GROUP_BINARY_81; - inst[1] = MOD_REG | AND | reg_map[SLJIT_SP]; - sljit_unaligned_store_sw(inst + 2, ~(sizeof(sljit_f64) - 1)); - - /* The real local size must be used. */ - return emit_mov(compiler, SLJIT_MEM1(SLJIT_SP), compiler->local_size, TMP_REG1, 0); - } -#endif - return emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, local_size); -} - -SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler, - sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, - sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) -{ - CHECK_ERROR(); - CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); - set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); - - compiler->args = get_arg_count(arg_types); - - /* [esp+0] for saving temporaries and function calls. */ - compiler->stack_tmp_size = 2 * sizeof(sljit_sw); - -#if !(defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if (scratches > 3) - compiler->stack_tmp_size = 3 * sizeof(sljit_sw); -#endif - - compiler->saveds_offset = compiler->stack_tmp_size; - if (scratches > 3) - compiler->saveds_offset += ((scratches > (3 + 6)) ? 6 : (scratches - 3)) * sizeof(sljit_sw); - - compiler->locals_offset = compiler->saveds_offset; - - if (saveds > 3) - compiler->locals_offset += (saveds - 3) * sizeof(sljit_sw); - - if (options & SLJIT_F64_ALIGNMENT) - compiler->locals_offset = (compiler->locals_offset + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1); - -#if defined(__APPLE__) - saveds = (2 + (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3)) * sizeof(sljit_uw); - compiler->local_size = ((SLJIT_LOCALS_OFFSET + saveds + local_size + 15) & ~15) - saveds; -#else - if (options & SLJIT_F64_ALIGNMENT) - compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_f64) - 1) & ~(sizeof(sljit_f64) - 1)); - else - compiler->local_size = SLJIT_LOCALS_OFFSET + ((local_size + sizeof(sljit_sw) - 1) & ~(sizeof(sljit_sw) - 1)); -#endif - return SLJIT_SUCCESS; -} - -SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw) -{ - sljit_s32 size; - sljit_u8 *inst; - - CHECK_ERROR(); - CHECK(check_sljit_emit_return(compiler, op, src, srcw)); - SLJIT_ASSERT(compiler->args >= 0); - - FAIL_IF(emit_mov_before_return(compiler, op, src, srcw)); - - SLJIT_ASSERT(compiler->local_size > 0); - -#if !defined(__APPLE__) - if (compiler->options & SLJIT_F64_ALIGNMENT) - EMIT_MOV(compiler, SLJIT_SP, 0, SLJIT_MEM1(SLJIT_SP), compiler->local_size) - else - FAIL_IF(emit_cum_binary(compiler, BINARY_OPCODE(ADD), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size)); -#else - FAIL_IF(emit_cum_binary(compiler, BINARY_OPCODE(ADD), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, compiler->local_size)); -#endif - - size = 2 + (compiler->scratches > 9 ? (compiler->scratches - 9) : 0) + - (compiler->saveds <= 3 ? compiler->saveds : 3); -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if (compiler->args > 2) - size += 2; -#endif - inst = (sljit_u8*)ensure_buf(compiler, 1 + size); - FAIL_IF(!inst); - - INC_SIZE(size); - - if (compiler->saveds > 0 || compiler->scratches > 11) - POP_REG(reg_map[SLJIT_S0]); - if (compiler->saveds > 1 || compiler->scratches > 10) - POP_REG(reg_map[SLJIT_S1]); - if (compiler->saveds > 2 || compiler->scratches > 9) - POP_REG(reg_map[SLJIT_S2]); - POP_REG(reg_map[TMP_REG1]); -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if (compiler->args > 2) - RET_I16(sizeof(sljit_sw)); - else - RET(); -#else - RET(); -#endif - - return SLJIT_SUCCESS; -} - -/* --------------------------------------------------------------------- */ -/* Operators */ -/* --------------------------------------------------------------------- */ - /* Size contains the flags as well. */ -static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 size, +static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_uw size, /* The register or immediate operand. */ sljit_s32 a, sljit_sw imma, /* The general operand (not immediate). */ @@ -353,8 +51,9 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 { sljit_u8 *inst; sljit_u8 *buf_ptr; - sljit_s32 flags = size & ~0xf; - sljit_s32 inst_size; + sljit_u8 reg_map_b; + sljit_uw flags = size; + sljit_uw inst_size; /* Both cannot be switched on. */ SLJIT_ASSERT((flags & (EX86_BIN_INS | EX86_SHIFT_INS)) != (EX86_BIN_INS | EX86_SHIFT_INS)); @@ -367,8 +66,6 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 SLJIT_ASSERT((flags & (EX86_PREF_F2 | EX86_PREF_F3)) != (EX86_PREF_F2 | EX86_PREF_F3) && (flags & (EX86_PREF_F2 | EX86_PREF_66)) != (EX86_PREF_F2 | EX86_PREF_66) && (flags & (EX86_PREF_F3 | EX86_PREF_66)) != (EX86_PREF_F3 | EX86_PREF_66)); - /* We don't support (%ebp). */ - SLJIT_ASSERT(!(b & SLJIT_MEM) || immb || reg_map[b & REG_MASK] != 5); size &= 0xf; inst_size = size; @@ -381,21 +78,30 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 /* Calculate size of b. */ inst_size += 1; /* mod r/m byte. */ if (b & SLJIT_MEM) { - if ((b & REG_MASK) == SLJIT_UNUSED) + if (!(b & REG_MASK)) inst_size += sizeof(sljit_sw); - else if (immb != 0 && !(b & OFFS_REG_MASK)) { - /* Immediate operand. */ - if (immb <= 127 && immb >= -128) - inst_size += sizeof(sljit_s8); - else - inst_size += sizeof(sljit_sw); - } + else { + if (immb != 0 && !(b & OFFS_REG_MASK)) { + /* Immediate operand. */ + if (immb <= 127 && immb >= -128) + inst_size += sizeof(sljit_s8); + else + inst_size += sizeof(sljit_sw); + } + else if (reg_map[b & REG_MASK] == 5) { + /* Swap registers if possible. */ + if ((b & OFFS_REG_MASK) && (immb & 0x3) == 0 && reg_map[OFFS_REG(b)] != 5) + b = SLJIT_MEM | OFFS_REG(b) | TO_OFFS_REG(b & REG_MASK); + else + inst_size += sizeof(sljit_s8); + } - if ((b & REG_MASK) == SLJIT_SP && !(b & OFFS_REG_MASK)) - b |= TO_OFFS_REG(SLJIT_SP); + if (reg_map[b & REG_MASK] == 4 && !(b & OFFS_REG_MASK)) + b |= TO_OFFS_REG(SLJIT_SP); - if ((b & OFFS_REG_MASK) != SLJIT_UNUSED) - inst_size += 1; /* SIB byte. */ + if (b & OFFS_REG_MASK) + inst_size += 1; /* SIB byte. */ + } } /* Calculate size of a. */ @@ -408,9 +114,9 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 inst_size += 4; } else if (flags & EX86_SHIFT_INS) { - imma &= 0x1f; + SLJIT_ASSERT(imma <= 0x1f); if (imma != 1) { - inst_size ++; + inst_size++; flags |= EX86_BYTE_ARG; } } else if (flags & EX86_BYTE_ARG) @@ -445,9 +151,9 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 if (a & SLJIT_IMM) *buf_ptr = 0; else if (!(flags & EX86_SSE2_OP1)) - *buf_ptr = reg_map[a] << 3; + *buf_ptr = U8(reg_map[a] << 3); else - *buf_ptr = a << 3; + *buf_ptr = U8(a << 3); } else { if (a & SLJIT_IMM) { @@ -460,27 +166,30 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 *buf_ptr = 0; } - if (!(b & SLJIT_MEM)) - *buf_ptr++ |= MOD_REG + ((!(flags & EX86_SSE2_OP2)) ? reg_map[b] : b); - else if ((b & REG_MASK) != SLJIT_UNUSED) { - if ((b & OFFS_REG_MASK) == SLJIT_UNUSED || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_SP)) { - if (immb != 0) { + if (!(b & SLJIT_MEM)) { + *buf_ptr = U8(*buf_ptr | MOD_REG | (!(flags & EX86_SSE2_OP2) ? reg_map[b] : b)); + buf_ptr++; + } else if (b & REG_MASK) { + reg_map_b = reg_map[b & REG_MASK]; + + if (!(b & OFFS_REG_MASK) || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_SP)) { + if (immb != 0 || reg_map_b == 5) { if (immb <= 127 && immb >= -128) *buf_ptr |= 0x40; else *buf_ptr |= 0x80; } - if ((b & OFFS_REG_MASK) == SLJIT_UNUSED) - *buf_ptr++ |= reg_map[b & REG_MASK]; + if (!(b & OFFS_REG_MASK)) + *buf_ptr++ |= reg_map_b; else { *buf_ptr++ |= 0x04; - *buf_ptr++ = reg_map[b & REG_MASK] | (reg_map[OFFS_REG(b)] << 3); + *buf_ptr++ = U8(reg_map_b | (reg_map[OFFS_REG(b)] << 3)); } - if (immb != 0) { + if (immb != 0 || reg_map_b == 5) { if (immb <= 127 && immb >= -128) - *buf_ptr++ = immb; /* 8 bit displacement. */ + *buf_ptr++ = U8(immb); /* 8 bit displacement. */ else { sljit_unaligned_store_sw(buf_ptr, immb); /* 32 bit displacement. */ buf_ptr += sizeof(sljit_sw); @@ -488,8 +197,14 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 } } else { + if (reg_map_b == 5) + *buf_ptr |= 0x40; + *buf_ptr++ |= 0x04; - *buf_ptr++ = reg_map[b & REG_MASK] | (reg_map[OFFS_REG(b)] << 3) | (immb << 6); + *buf_ptr++ = U8(reg_map_b | (reg_map[OFFS_REG(b)] << 3) | (immb << 6)); + + if (reg_map_b == 5) + *buf_ptr++ = 0; } } else { @@ -500,9 +215,9 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 if (a & SLJIT_IMM) { if (flags & EX86_BYTE_ARG) - *buf_ptr = imma; + *buf_ptr = U8(imma); else if (flags & EX86_HALF_ARG) - sljit_unaligned_store_s16(buf_ptr, imma); + sljit_unaligned_store_s16(buf_ptr, (sljit_s16)imma); else if (!(flags & EX86_SHIFT_INS)) sljit_unaligned_store_sw(buf_ptr, imma); } @@ -511,190 +226,483 @@ static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_s32 } /* --------------------------------------------------------------------- */ -/* Call / return instructions */ +/* Enter / return */ /* --------------------------------------------------------------------- */ -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - -static sljit_s32 c_fast_call_get_stack_size(sljit_s32 arg_types, sljit_s32 *word_arg_count_ptr) +static sljit_u8* generate_far_jump_code(struct sljit_jump *jump, sljit_u8 *code_ptr, sljit_sw executable_offset) { - sljit_s32 stack_size = 0; - sljit_s32 word_arg_count = 0; - - arg_types >>= SLJIT_DEF_SHIFT; - - while (arg_types) { - switch (arg_types & SLJIT_DEF_MASK) { - case SLJIT_ARG_TYPE_F32: - stack_size += sizeof(sljit_f32); - break; - case SLJIT_ARG_TYPE_F64: - stack_size += sizeof(sljit_f64); - break; - default: - word_arg_count++; - if (word_arg_count > 2) - stack_size += sizeof(sljit_sw); - break; - } + sljit_uw type = jump->flags >> TYPE_SHIFT; - arg_types >>= SLJIT_DEF_SHIFT; + if (type == SLJIT_JUMP) { + *code_ptr++ = JMP_i32; + jump->addr++; + } + else if (type >= SLJIT_FAST_CALL) { + *code_ptr++ = CALL_i32; + jump->addr++; + } + else { + *code_ptr++ = GROUP_0F; + *code_ptr++ = get_jump_code(type); + jump->addr += 2; } - if (word_arg_count_ptr) - *word_arg_count_ptr = word_arg_count; + if (jump->flags & JUMP_LABEL) + jump->flags |= PATCH_MW; + else + sljit_unaligned_store_sw(code_ptr, (sljit_sw)(jump->u.target - (jump->addr + 4) - (sljit_uw)executable_offset)); + code_ptr += 4; - return stack_size; + return code_ptr; } -static sljit_s32 c_fast_call_with_args(struct sljit_compiler *compiler, - sljit_s32 arg_types, sljit_s32 stack_size, sljit_s32 word_arg_count, sljit_s32 swap_args) +#define ENTER_TMP_TO_R4 0x00001 +#define ENTER_TMP_TO_S 0x00002 + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_enter(struct sljit_compiler *compiler, + sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, + sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) { + sljit_s32 word_arg_count, saved_arg_count, float_arg_count; + sljit_s32 size, args_size, types, status; + sljit_s32 kept_saveds_count = SLJIT_KEPT_SAVEDS_COUNT(options); sljit_u8 *inst; - sljit_s32 float_arg_count; +#ifdef _WIN32 + sljit_s32 r2_offset = -1; +#endif - if (stack_size == sizeof(sljit_sw) && word_arg_count == 3) { - inst = (sljit_u8*)ensure_buf(compiler, 1 + 1); - FAIL_IF(!inst); - INC_SIZE(1); - PUSH_REG(reg_map[SLJIT_R2]); - } - else if (stack_size > 0) { - if (word_arg_count >= 4) - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), compiler->saveds_offset - sizeof(sljit_sw)); + CHECK_ERROR(); + CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); + set_emit_enter(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); - FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, stack_size)); + /* Emit ENDBR32 at function entry if needed. */ + FAIL_IF(emit_endbranch(compiler)); + + SLJIT_COMPILE_ASSERT(SLJIT_FR0 == 1, float_register_index_start); + + arg_types >>= SLJIT_ARG_SHIFT; + word_arg_count = 0; + status = 0; + + if (options & SLJIT_ENTER_REG_ARG) { + args_size = 3 * SSIZE_OF(sw); - stack_size = 0; - arg_types >>= SLJIT_DEF_SHIFT; - word_arg_count = 0; - float_arg_count = 0; while (arg_types) { - switch (arg_types & SLJIT_DEF_MASK) { - case SLJIT_ARG_TYPE_F32: + if ((arg_types & SLJIT_ARG_MASK) < SLJIT_ARG_TYPE_F64) { + word_arg_count++; + if (word_arg_count >= 4) + status |= ENTER_TMP_TO_R4; + } + + arg_types >>= SLJIT_ARG_SHIFT; + } + + compiler->args_size = 0; + } else { + types = arg_types; + saved_arg_count = 0; + float_arg_count = 0; + args_size = SSIZE_OF(sw); + while (types) { + switch (types & SLJIT_ARG_MASK) { + case SLJIT_ARG_TYPE_F64: float_arg_count++; - FAIL_IF(emit_sse2_store(compiler, 1, SLJIT_MEM1(SLJIT_SP), stack_size, float_arg_count)); - stack_size += sizeof(sljit_f32); + FAIL_IF(emit_sse2_load(compiler, 0, float_arg_count, SLJIT_MEM1(SLJIT_SP), args_size)); + args_size += SSIZE_OF(f64); break; - case SLJIT_ARG_TYPE_F64: + case SLJIT_ARG_TYPE_F32: float_arg_count++; - FAIL_IF(emit_sse2_store(compiler, 0, SLJIT_MEM1(SLJIT_SP), stack_size, float_arg_count)); - stack_size += sizeof(sljit_f64); + FAIL_IF(emit_sse2_load(compiler, 1, float_arg_count, SLJIT_MEM1(SLJIT_SP), args_size)); + args_size += SSIZE_OF(f32); break; default: word_arg_count++; - if (word_arg_count == 3) { - EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), stack_size, SLJIT_R2, 0); - stack_size += sizeof(sljit_sw); - } - else if (word_arg_count == 4) { - EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), stack_size, TMP_REG1, 0); - stack_size += sizeof(sljit_sw); + + if (!(types & SLJIT_ARG_TYPE_SCRATCH_REG)) + saved_arg_count++; + + if (word_arg_count == 4) { + if (types & SLJIT_ARG_TYPE_SCRATCH_REG) { + status |= ENTER_TMP_TO_R4; + arg_types &= ~(SLJIT_ARG_FULL_MASK << 3 * SLJIT_ARG_SHIFT); + } else if (saved_arg_count == 4) { + status |= ENTER_TMP_TO_S; + arg_types &= ~(SLJIT_ARG_FULL_MASK << 3 * SLJIT_ARG_SHIFT); + } } + + args_size += SSIZE_OF(sw); break; } + types >>= SLJIT_ARG_SHIFT; + } + + args_size -= SSIZE_OF(sw); + compiler->args_size = args_size; + } + + size = (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3) - kept_saveds_count; + if (!(options & SLJIT_ENTER_REG_ARG)) + size++; + + if (size != 0) { + inst = (sljit_u8*)ensure_buf(compiler, (sljit_uw)(size + 1)); + FAIL_IF(!inst); + + INC_SIZE((sljit_uw)size); + + if (!(options & SLJIT_ENTER_REG_ARG)) + PUSH_REG(reg_map[TMP_REG1]); + + if ((saveds > 2 && kept_saveds_count <= 2) || scratches > 9) + PUSH_REG(reg_map[SLJIT_S2]); + if ((saveds > 1 && kept_saveds_count <= 1) || scratches > 10) + PUSH_REG(reg_map[SLJIT_S1]); + if ((saveds > 0 && kept_saveds_count == 0) || scratches > 11) + PUSH_REG(reg_map[SLJIT_S0]); + + size *= SSIZE_OF(sw); + } + + if (status & (ENTER_TMP_TO_R4 | ENTER_TMP_TO_S)) + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), args_size + size); + + size += SSIZE_OF(sw); + + local_size = ((SLJIT_LOCALS_OFFSET_BASE + local_size + size + 0xf) & ~0xf) - size; + compiler->local_size = local_size; + + word_arg_count = 0; + saved_arg_count = 0; + args_size = size; + while (arg_types) { + switch (arg_types & SLJIT_ARG_MASK) { + case SLJIT_ARG_TYPE_F64: + args_size += SSIZE_OF(f64); + break; + case SLJIT_ARG_TYPE_F32: + args_size += SSIZE_OF(f32); + break; + default: + word_arg_count++; + SLJIT_ASSERT(word_arg_count <= 3 || (word_arg_count == 4 && !(status & (ENTER_TMP_TO_R4 | ENTER_TMP_TO_S)))); + + if (arg_types & SLJIT_ARG_TYPE_SCRATCH_REG) { +#ifdef _WIN32 + if (word_arg_count == 3 && local_size > 4 * 4096) + r2_offset = local_size + args_size; + else +#endif + EMIT_MOV(compiler, word_arg_count, 0, SLJIT_MEM1(SLJIT_SP), args_size); + + } else { + EMIT_MOV(compiler, SLJIT_S0 - saved_arg_count, 0, SLJIT_MEM1(SLJIT_SP), args_size); + saved_arg_count++; + } - arg_types >>= SLJIT_DEF_SHIFT; + args_size += SSIZE_OF(sw); + break; } + arg_types >>= SLJIT_ARG_SHIFT; } - if (word_arg_count > 0) { - if (swap_args) { - inst = (sljit_u8*)ensure_buf(compiler, 1 + 1); - FAIL_IF(!inst); - INC_SIZE(1); + SLJIT_ASSERT(SLJIT_LOCALS_OFFSET > 0); + +#ifdef _WIN32 + SLJIT_ASSERT(r2_offset == -1 || local_size > 4 * 4096); - *inst++ = XCHG_EAX_r | reg_map[SLJIT_R2]; + if (local_size > 4096) { + if (local_size <= 4 * 4096) { + BINARY_IMM32(OR, 0, SLJIT_MEM1(SLJIT_SP), -4096); + + if (local_size > 2 * 4096) + BINARY_IMM32(OR, 0, SLJIT_MEM1(SLJIT_SP), -4096 * 2); + if (local_size > 3 * 4096) + BINARY_IMM32(OR, 0, SLJIT_MEM1(SLJIT_SP), -4096 * 3); } else { + if (options & SLJIT_ENTER_REG_ARG) { + SLJIT_ASSERT(r2_offset == -1); + + inst = (sljit_u8*)ensure_buf(compiler, (sljit_uw)(1 + 1)); + FAIL_IF(!inst); + INC_SIZE(1); + PUSH_REG(reg_map[SLJIT_R2]); + + local_size -= SSIZE_OF(sw); + r2_offset = local_size; + } + + EMIT_MOV(compiler, SLJIT_R2, 0, SLJIT_IMM, local_size >> 12); + + BINARY_IMM32(OR, 0, SLJIT_MEM1(SLJIT_SP), -4096); + BINARY_IMM32(SUB, 4096, SLJIT_SP, 0); + inst = (sljit_u8*)ensure_buf(compiler, 1 + 2); FAIL_IF(!inst); + INC_SIZE(2); + inst[0] = LOOP_i8; + inst[1] = (sljit_u8)-16; + local_size &= 0xfff; + } + } + + if (local_size > 0) { + BINARY_IMM32(OR, 0, SLJIT_MEM1(SLJIT_SP), -local_size); + BINARY_IMM32(SUB, local_size, SLJIT_SP, 0); + } + + if (r2_offset != -1) + EMIT_MOV(compiler, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), r2_offset); - *inst++ = MOV_r_rm; - *inst++ = MOD_REG | (reg_map[SLJIT_R2] << 3) | reg_map[SLJIT_R0]; +#else /* !_WIN32 */ + + SLJIT_ASSERT(local_size > 0); + + BINARY_IMM32(SUB, local_size, SLJIT_SP, 0); + +#endif /* _WIN32 */ + + size = SLJIT_LOCALS_OFFSET_BASE - SSIZE_OF(sw); + kept_saveds_count = SLJIT_R3 - kept_saveds_count; + + while (saved_arg_count > 3) { + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), size, kept_saveds_count, 0); + kept_saveds_count++; + size -= SSIZE_OF(sw); + saved_arg_count--; + } + + if (status & (ENTER_TMP_TO_R4 | ENTER_TMP_TO_S)) { + if (status & ENTER_TMP_TO_R4) + size = 2 * SSIZE_OF(sw); + + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), size, TMP_REG1, 0); + } + + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_set_context(struct sljit_compiler *compiler, + sljit_s32 options, sljit_s32 arg_types, sljit_s32 scratches, sljit_s32 saveds, + sljit_s32 fscratches, sljit_s32 fsaveds, sljit_s32 local_size) +{ + sljit_s32 args_size; + + CHECK_ERROR(); + CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size)); + set_set_context(compiler, options, arg_types, scratches, saveds, fscratches, fsaveds, local_size); + + arg_types >>= SLJIT_ARG_SHIFT; + args_size = 0; + + if (!(options & SLJIT_ENTER_REG_ARG)) { + while (arg_types) { + switch (arg_types & SLJIT_ARG_MASK) { + case SLJIT_ARG_TYPE_F64: + args_size += SSIZE_OF(f64); + break; + case SLJIT_ARG_TYPE_F32: + args_size += SSIZE_OF(f32); + break; + default: + args_size += SSIZE_OF(sw); + break; + } + arg_types >>= SLJIT_ARG_SHIFT; } } + compiler->args_size = args_size; + + /* [esp+0] for saving temporaries and for function calls. */ + + saveds = (1 + (scratches > 9 ? (scratches - 9) : 0) + (saveds <= 3 ? saveds : 3) - SLJIT_KEPT_SAVEDS_COUNT(options)) * SSIZE_OF(sw); + + /* Saving ebp. */ + if (!(options & SLJIT_ENTER_REG_ARG)) + saveds += SSIZE_OF(sw); + + compiler->local_size = ((SLJIT_LOCALS_OFFSET_BASE + local_size + saveds + 0xf) & ~0xf) - saveds; return SLJIT_SUCCESS; } -#endif +static sljit_s32 emit_stack_frame_release(struct sljit_compiler *compiler, sljit_s32 is_return_to) +{ + sljit_s32 kept_saveds_count = SLJIT_KEPT_SAVEDS_COUNT(compiler->options); + sljit_s32 local_size, saveds; + sljit_uw size; + sljit_u8 *inst; + + size = (sljit_uw)((compiler->scratches > 9 ? (compiler->scratches - 9) : 0) + + (compiler->saveds <= 3 ? compiler->saveds : 3) - kept_saveds_count); + + local_size = compiler->local_size; + + if (!(compiler->options & SLJIT_ENTER_REG_ARG)) + size++; + else if (is_return_to && size == 0) { + local_size += SSIZE_OF(sw); + is_return_to = 0; + } + + if (local_size > 0) + BINARY_IMM32(ADD, local_size, SLJIT_SP, 0); + + if (size == 0) + return SLJIT_SUCCESS; + + inst = (sljit_u8*)ensure_buf(compiler, 1 + size); + FAIL_IF(!inst); + + INC_SIZE(size); + + saveds = compiler->saveds; + + if ((saveds > 0 && kept_saveds_count == 0) || compiler->scratches > 11) + POP_REG(reg_map[SLJIT_S0]); + if ((saveds > 1 && kept_saveds_count <= 1) || compiler->scratches > 10) + POP_REG(reg_map[SLJIT_S1]); + if ((saveds > 2 && kept_saveds_count <= 2) || compiler->scratches > 9) + POP_REG(reg_map[SLJIT_S2]); + + if (!(compiler->options & SLJIT_ENTER_REG_ARG)) + POP_REG(reg_map[TMP_REG1]); + + if (is_return_to) + BINARY_IMM32(ADD, sizeof(sljit_sw), SLJIT_SP, 0); + + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_void(struct sljit_compiler *compiler) +{ + sljit_u8 *inst; + + CHECK_ERROR(); + CHECK(check_sljit_emit_return_void(compiler)); + + SLJIT_ASSERT(compiler->args_size >= 0); + SLJIT_ASSERT(compiler->local_size > 0); + + FAIL_IF(emit_stack_frame_release(compiler, 0)); + + inst = (sljit_u8*)ensure_buf(compiler, 1 + 1); + FAIL_IF(!inst); + INC_SIZE(1); + RET(); + return SLJIT_SUCCESS; +} + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_to(struct sljit_compiler *compiler, + sljit_s32 src, sljit_sw srcw) +{ + sljit_s32 src_r; + + CHECK_ERROR(); + CHECK(check_sljit_emit_return_to(compiler, src, srcw)); + + if ((src & SLJIT_MEM) || (src > SLJIT_R2 && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options)))) { + ADJUST_LOCAL_OFFSET(src, srcw); + CHECK_EXTRA_REGS(src, srcw, (void)0); + + src_r = (compiler->options & SLJIT_ENTER_REG_ARG) ? TMP_REG1 : SLJIT_R1; + + EMIT_MOV(compiler, src_r, 0, src, srcw); + src = src_r; + srcw = 0; + } + + FAIL_IF(emit_stack_frame_release(compiler, 1)); + + SLJIT_SKIP_CHECKS(compiler); + return sljit_emit_ijump(compiler, SLJIT_JUMP, src, srcw); +} + +/* --------------------------------------------------------------------- */ +/* Call / return instructions */ +/* --------------------------------------------------------------------- */ -static sljit_s32 cdecl_call_get_stack_size(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *word_arg_count_ptr) +static sljit_s32 call_get_stack_size(sljit_s32 arg_types, sljit_s32 *word_arg_count_ptr) { - sljit_s32 stack_size = 0; + sljit_sw stack_size = 0; sljit_s32 word_arg_count = 0; - arg_types >>= SLJIT_DEF_SHIFT; + arg_types >>= SLJIT_ARG_SHIFT; while (arg_types) { - switch (arg_types & SLJIT_DEF_MASK) { - case SLJIT_ARG_TYPE_F32: - stack_size += sizeof(sljit_f32); - break; + switch (arg_types & SLJIT_ARG_MASK) { case SLJIT_ARG_TYPE_F64: - stack_size += sizeof(sljit_f64); + stack_size += SSIZE_OF(f64); + break; + case SLJIT_ARG_TYPE_F32: + stack_size += SSIZE_OF(f32); break; default: word_arg_count++; - stack_size += sizeof(sljit_sw); + stack_size += SSIZE_OF(sw); break; } - arg_types >>= SLJIT_DEF_SHIFT; + arg_types >>= SLJIT_ARG_SHIFT; } if (word_arg_count_ptr) *word_arg_count_ptr = word_arg_count; - if (stack_size <= compiler->stack_tmp_size) + if (stack_size <= 4 * SSIZE_OF(sw)) return 0; -#if defined(__APPLE__) - return ((stack_size - compiler->stack_tmp_size + 15) & ~15); -#else - return stack_size - compiler->stack_tmp_size; -#endif + return ((stack_size - (4 * SSIZE_OF(sw)) + 0xf) & ~0xf); } -static sljit_s32 cdecl_call_with_args(struct sljit_compiler *compiler, - sljit_s32 arg_types, sljit_s32 stack_size, sljit_s32 word_arg_count) +static sljit_s32 call_with_args(struct sljit_compiler *compiler, + sljit_s32 arg_types, sljit_sw stack_size, sljit_s32 word_arg_count, sljit_s32 keep_tmp1) { - sljit_s32 float_arg_count = 0; + sljit_s32 float_arg_count = 0, arg4_reg = 0, arg_offset; + sljit_u8 *inst; - if (word_arg_count >= 4) - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), compiler->saveds_offset - sizeof(sljit_sw)); + if (word_arg_count >= 4) { + arg4_reg = SLJIT_R0; + + if (!keep_tmp1) { + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), 2 * SSIZE_OF(sw)); + arg4_reg = TMP_REG1; + } + } if (stack_size > 0) - FAIL_IF(emit_non_cum_binary(compiler, BINARY_OPCODE(SUB), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, stack_size)); + BINARY_IMM32(SUB, stack_size, SLJIT_SP, 0); - stack_size = 0; + arg_offset = 0; word_arg_count = 0; - arg_types >>= SLJIT_DEF_SHIFT; + arg_types >>= SLJIT_ARG_SHIFT; while (arg_types) { - switch (arg_types & SLJIT_DEF_MASK) { - case SLJIT_ARG_TYPE_F32: + switch (arg_types & SLJIT_ARG_MASK) { + case SLJIT_ARG_TYPE_F64: float_arg_count++; - FAIL_IF(emit_sse2_store(compiler, 1, SLJIT_MEM1(SLJIT_SP), stack_size, float_arg_count)); - stack_size += sizeof(sljit_f32); + FAIL_IF(emit_sse2_store(compiler, 0, SLJIT_MEM1(SLJIT_SP), arg_offset, float_arg_count)); + arg_offset += SSIZE_OF(f64); break; - case SLJIT_ARG_TYPE_F64: + case SLJIT_ARG_TYPE_F32: float_arg_count++; - FAIL_IF(emit_sse2_store(compiler, 0, SLJIT_MEM1(SLJIT_SP), stack_size, float_arg_count)); - stack_size += sizeof(sljit_f64); + FAIL_IF(emit_sse2_store(compiler, 1, SLJIT_MEM1(SLJIT_SP), arg_offset, float_arg_count)); + arg_offset += SSIZE_OF(f32); break; default: word_arg_count++; - EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), stack_size, (word_arg_count >= 4) ? TMP_REG1 : word_arg_count, 0); - stack_size += sizeof(sljit_sw); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), arg_offset, (word_arg_count >= 4) ? arg4_reg : word_arg_count, 0); + + if (word_arg_count == 1 && arg4_reg == SLJIT_R0) + EMIT_MOV(compiler, SLJIT_R0, 0, SLJIT_MEM1(SLJIT_SP), 2 * SSIZE_OF(sw) + stack_size); + + arg_offset += SSIZE_OF(sw); break; } - arg_types >>= SLJIT_DEF_SHIFT; + arg_types >>= SLJIT_ARG_SHIFT; } return SLJIT_SUCCESS; @@ -707,13 +715,12 @@ static sljit_s32 post_call_with_args(struct sljit_compiler *compiler, sljit_s32 single; if (stack_size > 0) - FAIL_IF(emit_cum_binary(compiler, BINARY_OPCODE(ADD), - SLJIT_SP, 0, SLJIT_SP, 0, SLJIT_IMM, stack_size)); + BINARY_IMM32(ADD, stack_size, SLJIT_SP, 0); - if ((arg_types & SLJIT_DEF_MASK) < SLJIT_ARG_TYPE_F32) + if ((arg_types & SLJIT_ARG_MASK) < SLJIT_ARG_TYPE_F64) return SLJIT_SUCCESS; - single = ((arg_types & SLJIT_DEF_MASK) == SLJIT_ARG_TYPE_F32); + single = ((arg_types & SLJIT_ARG_MASK) == SLJIT_ARG_TYPE_F32); inst = (sljit_u8*)ensure_buf(compiler, 1 + 3); FAIL_IF(!inst); @@ -725,42 +732,310 @@ static sljit_s32 post_call_with_args(struct sljit_compiler *compiler, return emit_sse2_load(compiler, single, SLJIT_FR0, SLJIT_MEM1(SLJIT_SP), 0); } +static sljit_s32 tail_call_with_args(struct sljit_compiler *compiler, + sljit_s32 *extra_space, sljit_s32 arg_types, + sljit_s32 src, sljit_sw srcw) +{ + sljit_sw args_size, saved_regs_size; + sljit_sw types, word_arg_count, float_arg_count; + sljit_sw stack_size, prev_stack_size, min_size, offset; + sljit_sw word_arg4_offset; + sljit_u8 r2_offset = 0; + sljit_s32 kept_saveds_count = SLJIT_KEPT_SAVEDS_COUNT(compiler->options); + sljit_u8* inst; + + ADJUST_LOCAL_OFFSET(src, srcw); + CHECK_EXTRA_REGS(src, srcw, (void)0); + + saved_regs_size = (1 + (compiler->scratches > 9 ? (compiler->scratches - 9) : 0) + + (compiler->saveds <= 3 ? compiler->saveds : 3) - kept_saveds_count) * SSIZE_OF(sw); + + word_arg_count = 0; + float_arg_count = 0; + arg_types >>= SLJIT_ARG_SHIFT; + types = 0; + args_size = 0; + + while (arg_types != 0) { + types = (types << SLJIT_ARG_SHIFT) | (arg_types & SLJIT_ARG_MASK); + + switch (arg_types & SLJIT_ARG_MASK) { + case SLJIT_ARG_TYPE_F64: + args_size += SSIZE_OF(f64); + float_arg_count++; + break; + case SLJIT_ARG_TYPE_F32: + args_size += SSIZE_OF(f32); + float_arg_count++; + break; + default: + word_arg_count++; + args_size += SSIZE_OF(sw); + break; + } + arg_types >>= SLJIT_ARG_SHIFT; + } + + if (args_size <= compiler->args_size) { + *extra_space = 0; + stack_size = args_size + SSIZE_OF(sw) + saved_regs_size; + + offset = stack_size + compiler->local_size; + + if (!(src & SLJIT_IMM) && src != SLJIT_R0) { + if (word_arg_count >= 1) { + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), 0, SLJIT_R0, 0); + r2_offset = sizeof(sljit_sw); + } + EMIT_MOV(compiler, SLJIT_R0, 0, src, srcw); + } + + while (types != 0) { + switch (types & SLJIT_ARG_MASK) { + case SLJIT_ARG_TYPE_F64: + offset -= SSIZE_OF(f64); + FAIL_IF(emit_sse2_store(compiler, 0, SLJIT_MEM1(SLJIT_SP), offset, float_arg_count)); + float_arg_count--; + break; + case SLJIT_ARG_TYPE_F32: + offset -= SSIZE_OF(f32); + FAIL_IF(emit_sse2_store(compiler, 0, SLJIT_MEM1(SLJIT_SP), offset, float_arg_count)); + float_arg_count--; + break; + default: + switch (word_arg_count) { + case 1: + offset -= SSIZE_OF(sw); + if (r2_offset != 0) { + EMIT_MOV(compiler, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), 0); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R2, 0); + } else + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R0, 0); + break; + case 2: + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R1, 0); + break; + case 3: + offset -= SSIZE_OF(sw); + break; + case 4: + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), 2 * SSIZE_OF(sw)); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R2, 0); + break; + } + word_arg_count--; + break; + } + types >>= SLJIT_ARG_SHIFT; + } + + return emit_stack_frame_release(compiler, 0); + } + + stack_size = args_size + SSIZE_OF(sw); + + if (word_arg_count >= 1 && !(src & SLJIT_IMM) && src != SLJIT_R0) { + r2_offset = SSIZE_OF(sw); + stack_size += SSIZE_OF(sw); + } + + if (word_arg_count >= 3) + stack_size += SSIZE_OF(sw); + + prev_stack_size = SSIZE_OF(sw) + saved_regs_size; + min_size = prev_stack_size + compiler->local_size; + + word_arg4_offset = 2 * SSIZE_OF(sw); + + if (stack_size > min_size) { + BINARY_IMM32(SUB, stack_size - min_size, SLJIT_SP, 0); + if (src == SLJIT_MEM1(SLJIT_SP)) + srcw += stack_size - min_size; + word_arg4_offset += stack_size - min_size; + } + else + stack_size = min_size; + + if (word_arg_count >= 3) { + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), r2_offset, SLJIT_R2, 0); + + if (word_arg_count >= 4) + EMIT_MOV(compiler, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), word_arg4_offset); + } + + if (!(src & SLJIT_IMM) && src != SLJIT_R0) { + if (word_arg_count >= 1) { + SLJIT_ASSERT(r2_offset == sizeof(sljit_sw)); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), 0, SLJIT_R0, 0); + } + EMIT_MOV(compiler, SLJIT_R0, 0, src, srcw); + } + + /* Restore saved registers. */ + offset = stack_size - 2 * SSIZE_OF(sw); + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), offset); + + if (compiler->saveds > 2 || compiler->scratches > 9) { + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_S2, 0, SLJIT_MEM1(SLJIT_SP), offset); + } + if ((compiler->saveds > 1 && kept_saveds_count <= 1) || compiler->scratches > 10) { + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_S1, 0, SLJIT_MEM1(SLJIT_SP), offset); + } + if ((compiler->saveds > 0 && kept_saveds_count == 0) || compiler->scratches > 11) { + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_S0, 0, SLJIT_MEM1(SLJIT_SP), offset); + } + + /* Copy fourth argument and return address. */ + offset = stack_size - SSIZE_OF(sw); + *extra_space = args_size; + + if (word_arg_count >= 4) { + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R2, 0); + } + + while (types != 0) { + switch (types & SLJIT_ARG_MASK) { + case SLJIT_ARG_TYPE_F64: + offset -= SSIZE_OF(f64); + FAIL_IF(emit_sse2_store(compiler, 0, SLJIT_MEM1(SLJIT_SP), offset, float_arg_count)); + float_arg_count--; + break; + case SLJIT_ARG_TYPE_F32: + offset -= SSIZE_OF(f32); + FAIL_IF(emit_sse2_store(compiler, 0, SLJIT_MEM1(SLJIT_SP), offset, float_arg_count)); + float_arg_count--; + break; + default: + switch (word_arg_count) { + case 1: + offset -= SSIZE_OF(sw); + if (r2_offset != 0) { + EMIT_MOV(compiler, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), 0); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R2, 0); + } else + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R0, 0); + break; + case 2: + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R1, 0); + break; + case 3: + offset -= SSIZE_OF(sw); + EMIT_MOV(compiler, SLJIT_R2, 0, SLJIT_MEM1(SLJIT_SP), r2_offset); + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, SLJIT_R2, 0); + break; + } + word_arg_count--; + break; + } + types >>= SLJIT_ARG_SHIFT; + } + + SLJIT_ASSERT(offset >= 0); + + if (offset == 0) + return SLJIT_SUCCESS; + + BINARY_IMM32(ADD, offset, SLJIT_SP, 0); + return SLJIT_SUCCESS; +} + +static sljit_s32 emit_tail_call_end(struct sljit_compiler *compiler, sljit_s32 extra_space) +{ + /* Called when stack consumption cannot be reduced to 0. */ + sljit_u8 *inst; + + BINARY_IMM32(ADD, extra_space, SLJIT_SP, 0); + + inst = (sljit_u8*)ensure_buf(compiler, 1 + 1); + FAIL_IF(!inst); + INC_SIZE(1); + RET(); + + return SLJIT_SUCCESS; +} + +static sljit_s32 tail_call_reg_arg_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types) +{ + sljit_s32 word_arg_count = 0; + sljit_s32 kept_saveds_count, offset; + + arg_types >>= SLJIT_ARG_SHIFT; + + while (arg_types) { + if ((arg_types & SLJIT_ARG_MASK) < SLJIT_ARG_TYPE_F64) + word_arg_count++; + + arg_types >>= SLJIT_ARG_SHIFT; + } + + if (word_arg_count < 4) + return SLJIT_SUCCESS; + + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), 2 * SSIZE_OF(sw)); + + kept_saveds_count = SLJIT_KEPT_SAVEDS_COUNT(compiler->options); + offset = compiler->local_size + 3 * SSIZE_OF(sw); + + if ((compiler->saveds > 0 && kept_saveds_count == 0) || compiler->scratches > 11) + offset += SSIZE_OF(sw); + if ((compiler->saveds > 1 && kept_saveds_count <= 1) || compiler->scratches > 10) + offset += SSIZE_OF(sw); + if ((compiler->saveds > 2 && kept_saveds_count <= 2) || compiler->scratches > 9) + offset += SSIZE_OF(sw); + + return emit_mov(compiler, SLJIT_MEM1(SLJIT_SP), offset, TMP_REG1, 0); +} + SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type, sljit_s32 arg_types) { struct sljit_jump *jump; - sljit_s32 stack_size = 0; + sljit_sw stack_size = 0; sljit_s32 word_arg_count; CHECK_ERROR_PTR(); CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types)); -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - if ((type & 0xff) == SLJIT_CALL) { - stack_size = c_fast_call_get_stack_size(arg_types, &word_arg_count); - PTR_FAIL_IF(c_fast_call_with_args(compiler, arg_types, stack_size, word_arg_count, 0)); + if (type & SLJIT_CALL_RETURN) { + if ((type & 0xff) == SLJIT_CALL_REG_ARG) { + PTR_FAIL_IF(tail_call_reg_arg_with_args(compiler, arg_types)); + PTR_FAIL_IF(emit_stack_frame_release(compiler, 0)); -#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ - || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) - compiler->skip_checks = 1; -#endif + SLJIT_SKIP_CHECKS(compiler); + return sljit_emit_jump(compiler, SLJIT_JUMP | (type & SLJIT_REWRITABLE_JUMP)); + } + + stack_size = type; + PTR_FAIL_IF(tail_call_with_args(compiler, &stack_size, arg_types, SLJIT_IMM, 0)); + + SLJIT_SKIP_CHECKS(compiler); + + if (stack_size == 0) + return sljit_emit_jump(compiler, SLJIT_JUMP | (type & SLJIT_REWRITABLE_JUMP)); jump = sljit_emit_jump(compiler, type); PTR_FAIL_IF(jump == NULL); - PTR_FAIL_IF(post_call_with_args(compiler, arg_types, 0)); + PTR_FAIL_IF(emit_tail_call_end(compiler, stack_size)); return jump; } -#endif - stack_size = cdecl_call_get_stack_size(compiler, arg_types, &word_arg_count); - PTR_FAIL_IF(cdecl_call_with_args(compiler, arg_types, stack_size, word_arg_count)); + if ((type & 0xff) == SLJIT_CALL_REG_ARG) { + SLJIT_SKIP_CHECKS(compiler); + return sljit_emit_jump(compiler, type); + } -#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ - || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) - compiler->skip_checks = 1; -#endif + stack_size = call_get_stack_size(arg_types, &word_arg_count); + PTR_FAIL_IF(call_with_args(compiler, arg_types, stack_size, word_arg_count, 0)); + SLJIT_SKIP_CHECKS(compiler); jump = sljit_emit_jump(compiler, type); PTR_FAIL_IF(jump == NULL); @@ -772,68 +1047,101 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compi sljit_s32 arg_types, sljit_s32 src, sljit_sw srcw) { - sljit_s32 stack_size = 0; + sljit_sw stack_size = 0; sljit_s32 word_arg_count; -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - sljit_s32 swap_args; -#endif CHECK_ERROR(); CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw)); -#if (defined SLJIT_X86_32_FASTCALL && SLJIT_X86_32_FASTCALL) - SLJIT_ASSERT(reg_map[SLJIT_R0] == 0 && reg_map[SLJIT_R2] == 1 && SLJIT_R0 == 1 && SLJIT_R2 == 3); + if (type & SLJIT_CALL_RETURN) { + if ((type & 0xff) == SLJIT_CALL_REG_ARG) { + FAIL_IF(tail_call_reg_arg_with_args(compiler, arg_types)); - if ((type & 0xff) == SLJIT_CALL) { - stack_size = c_fast_call_get_stack_size(arg_types, &word_arg_count); - swap_args = 0; + if ((src & SLJIT_MEM) || (src > SLJIT_R2 && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options)))) { + ADJUST_LOCAL_OFFSET(src, srcw); + CHECK_EXTRA_REGS(src, srcw, (void)0); - if (word_arg_count > 0) { - if ((src & REG_MASK) == SLJIT_R2 || OFFS_REG(src) == SLJIT_R2) { - swap_args = 1; - if (((src & REG_MASK) | 0x2) == SLJIT_R2) - src ^= 0x2; - if ((OFFS_REG(src) | 0x2) == SLJIT_R2) - src ^= TO_OFFS_REG(0x2); + EMIT_MOV(compiler, TMP_REG1, 0, src, srcw); + src = TMP_REG1; + srcw = 0; } + + FAIL_IF(emit_stack_frame_release(compiler, 0)); + + SLJIT_SKIP_CHECKS(compiler); + return sljit_emit_ijump(compiler, SLJIT_JUMP, src, srcw); } - FAIL_IF(c_fast_call_with_args(compiler, arg_types, stack_size, word_arg_count, swap_args)); + stack_size = type; + FAIL_IF(tail_call_with_args(compiler, &stack_size, arg_types, src, srcw)); - compiler->saveds_offset += stack_size; - compiler->locals_offset += stack_size; + if (!(src & SLJIT_IMM)) { + src = SLJIT_R0; + srcw = 0; + } + + SLJIT_SKIP_CHECKS(compiler); + + if (stack_size == 0) + return sljit_emit_ijump(compiler, SLJIT_JUMP, src, srcw); -#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ - || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) - compiler->skip_checks = 1; -#endif FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw)); + return emit_tail_call_end(compiler, stack_size); + } - compiler->saveds_offset -= stack_size; - compiler->locals_offset -= stack_size; + if ((type & 0xff) == SLJIT_CALL_REG_ARG) { + SLJIT_SKIP_CHECKS(compiler); + return sljit_emit_ijump(compiler, type, src, srcw); + } + + ADJUST_LOCAL_OFFSET(src, srcw); + CHECK_EXTRA_REGS(src, srcw, (void)0); - return post_call_with_args(compiler, arg_types, 0); + if (src & SLJIT_MEM) { + EMIT_MOV(compiler, TMP_REG1, 0, src, srcw); + src = TMP_REG1; + srcw = 0; } -#endif - stack_size = cdecl_call_get_stack_size(compiler, arg_types, &word_arg_count); - FAIL_IF(cdecl_call_with_args(compiler, arg_types, stack_size, word_arg_count)); + stack_size = call_get_stack_size(arg_types, &word_arg_count); + FAIL_IF(call_with_args(compiler, arg_types, stack_size, word_arg_count, src == TMP_REG1)); - compiler->saveds_offset += stack_size; - compiler->locals_offset += stack_size; + if (stack_size > 0 && src == SLJIT_MEM1(SLJIT_SP)) + srcw += stack_size; -#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \ - || (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS) - compiler->skip_checks = 1; -#endif + SLJIT_SKIP_CHECKS(compiler); FAIL_IF(sljit_emit_ijump(compiler, type, src, srcw)); - compiler->saveds_offset -= stack_size; - compiler->locals_offset -= stack_size; - return post_call_with_args(compiler, arg_types, stack_size); } +static SLJIT_INLINE sljit_s32 emit_fmov_before_return(struct sljit_compiler *compiler, sljit_s32 op, sljit_s32 src, sljit_sw srcw) +{ + sljit_u8* inst; + + if (compiler->options & SLJIT_ENTER_REG_ARG) { + if (src == SLJIT_FR0) + return SLJIT_SUCCESS; + + SLJIT_SKIP_CHECKS(compiler); + return sljit_emit_fop1(compiler, op, SLJIT_RETURN_FREG, 0, src, srcw); + } + + if (FAST_IS_REG(src)) { + FAIL_IF(emit_sse2_store(compiler, op & SLJIT_32, SLJIT_MEM1(SLJIT_SP), 0, src)); + + src = SLJIT_MEM1(SLJIT_SP); + srcw = 0; + } else { + ADJUST_LOCAL_OFFSET(src, srcw); + } + + inst = emit_x86_instruction(compiler, 1 | EX86_SSE2_OP1, 0, 0, src, srcw); + *inst = (op & SLJIT_32) ? FLDS : FLDL; + + return SLJIT_SUCCESS; +} + SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw) { sljit_u8 *inst; @@ -844,10 +1152,6 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fast_enter(struct sljit_compiler * CHECK_EXTRA_REGS(dst, dstw, (void)0); - /* For UNUSED dst. Uncommon, but possible. */ - if (dst == SLJIT_UNUSED) - dst = TMP_REG1; - if (FAST_IS_REG(dst)) { /* Unused dest is possible here. */ inst = (sljit_u8*)ensure_buf(compiler, 1 + 1); @@ -893,36 +1197,102 @@ static sljit_s32 emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src return SLJIT_SUCCESS; } +/* --------------------------------------------------------------------- */ +/* Other operations */ +/* --------------------------------------------------------------------- */ + +SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_mem(struct sljit_compiler *compiler, sljit_s32 type, + sljit_s32 reg, + sljit_s32 mem, sljit_sw memw) +{ + sljit_u8* inst; + sljit_s32 i, next, reg_idx, offset; + sljit_u8 regs[2]; + + CHECK_ERROR(); + CHECK(check_sljit_emit_mem(compiler, type, reg, mem, memw)); + + if (!(reg & REG_PAIR_MASK)) + return sljit_emit_mem_unaligned(compiler, type, reg, mem, memw); + + ADJUST_LOCAL_OFFSET(mem, memw); + + regs[0] = U8(REG_PAIR_FIRST(reg)); + regs[1] = U8(REG_PAIR_SECOND(reg)); + + next = SSIZE_OF(sw); + + if (!(type & SLJIT_MEM_STORE) && (regs[0] == (mem & REG_MASK) || regs[0] == OFFS_REG(mem))) { + if (regs[1] == (mem & REG_MASK) || regs[1] == OFFS_REG(mem)) { + /* None of them are virtual register so TMP_REG1 will not be used. */ + EMIT_MOV(compiler, TMP_REG1, 0, OFFS_REG(mem), 0); + + if (regs[1] == OFFS_REG(mem)) + next = -SSIZE_OF(sw); + + mem = (mem & ~OFFS_REG_MASK) | TO_OFFS_REG(TMP_REG1); + } else { + next = -SSIZE_OF(sw); + + if (!(mem & OFFS_REG_MASK)) + memw += SSIZE_OF(sw); + } + } + + for (i = 0; i < 2; i++) { + reg_idx = next > 0 ? i : (i ^ 0x1); + reg = regs[reg_idx]; + + offset = -1; + + if (reg >= SLJIT_R3 && reg <= SLJIT_S3) { + offset = (2 * SSIZE_OF(sw)) + ((reg) - SLJIT_R3) * SSIZE_OF(sw); + reg = TMP_REG1; + + if (type & SLJIT_MEM_STORE) + EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), offset); + } + + if ((mem & OFFS_REG_MASK) && (reg_idx == 1)) { + inst = (sljit_u8*)ensure_buf(compiler, (sljit_uw)(1 + 4)); + FAIL_IF(!inst); + + INC_SIZE(4); + + inst[0] = (type & SLJIT_MEM_STORE) ? MOV_rm_r : MOV_r_rm; + inst[1] = 0x44 | U8(reg_map[reg] << 3); + inst[2] = U8(memw << 6) | U8(reg_map[OFFS_REG(mem)] << 3) | reg_map[mem & REG_MASK]; + inst[3] = sizeof(sljit_sw); + } else if (type & SLJIT_MEM_STORE) { + EMIT_MOV(compiler, mem, memw, reg, 0); + } else { + EMIT_MOV(compiler, reg, 0, mem, memw); + } + + if (!(mem & OFFS_REG_MASK)) + memw += next; + + if (!(type & SLJIT_MEM_STORE) && offset != -1) + EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), offset, TMP_REG1, 0); + } + + return SLJIT_SUCCESS; +} + static sljit_s32 skip_frames_before_return(struct sljit_compiler *compiler) { - sljit_s32 size, saved_size; - sljit_s32 has_f64_aligment; + sljit_sw size; /* Don't adjust shadow stack if it isn't enabled. */ - if (!cpu_has_shadow_stack ()) + if (!cpu_has_shadow_stack()) return SLJIT_SUCCESS; - SLJIT_ASSERT(compiler->args >= 0); + SLJIT_ASSERT(compiler->args_size >= 0); SLJIT_ASSERT(compiler->local_size > 0); -#if !defined(__APPLE__) - has_f64_aligment = compiler->options & SLJIT_F64_ALIGNMENT; -#else - has_f64_aligment = 0; -#endif - size = compiler->local_size; - saved_size = (1 + (compiler->scratches > 9 ? (compiler->scratches - 9) : 0) + (compiler->saveds <= 3 ? compiler->saveds : 3)) * sizeof(sljit_uw); - if (has_f64_aligment) { - /* mov TMP_REG1, [esp + local_size]. */ - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), size); - /* mov TMP_REG1, [TMP_REG1+ saved_size]. */ - EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(TMP_REG1), saved_size); - /* Move return address to [esp]. */ - EMIT_MOV(compiler, SLJIT_MEM1(SLJIT_SP), 0, TMP_REG1, 0); - size = 0; - } else - size += saved_size; - - return adjust_shadow_stack(compiler, SLJIT_UNUSED, 0, SLJIT_SP, size); + size += (1 + (compiler->scratches > 9 ? (compiler->scratches - 9) : 0) + + (compiler->saveds <= 3 ? compiler->saveds : 3)) * SSIZE_OF(sw); + + return adjust_shadow_stack(compiler, SLJIT_MEM1(SLJIT_SP), size); } |