X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=pcre3.git;a=blobdiff_plain;f=sljit%2FsljitNativeX86_64.c;h=1790d8a4d0a606639302d0d5f8c65da29f6d9bce;hp=967f3c344405e984b69e32be52c0bd3d7315ebdf;hb=86ef59c527b0015060b75bf41698f0310bb1ef72;hpb=98c3e224a46705936ea39a3830e50299f2ce3c73

diff --git a/sljit/sljitNativeX86_64.c b/sljit/sljitNativeX86_64.c
index 967f3c3..1790d8a 100644
--- a/sljit/sljitNativeX86_64.c
+++ b/sljit/sljitNativeX86_64.c
@@ -87,118 +87,88 @@ static sljit_ub* generate_fixed_jump(sljit_ub *code_ptr, sljit_sw addr, sljit_si
 	return code_ptr;
 }
 
-SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
+SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compiler,
+	sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds,
+	sljit_si fscratches, sljit_si fsaveds, sljit_si local_size)
 {
-	sljit_si size, pushed_size;
+	sljit_si i, tmp, size, saved_register_size;
 	sljit_ub *inst;
 
 	CHECK_ERROR();
-	check_sljit_emit_enter(compiler, args, scratches, saveds, local_size);
+	CHECK(check_sljit_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
+	set_emit_enter(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
 
-	compiler->scratches = scratches;
-	compiler->saveds = saveds;
 	compiler->flags_saved = 0;
-#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
-	compiler->logical_local_size = local_size;
-#endif
 
-	size = saveds;
 	/* Including the return address saved by the call instruction. */
-	pushed_size = (saveds + 1) * sizeof(sljit_sw);
-#ifndef _WIN64
-	if (saveds >= 2)
-		size += saveds - 1;
-#else
-	if (saveds >= 4)
-		size += saveds - 3;
-	if (scratches >= 5) {
-		size += (5 - 4) * 2;
-		pushed_size += sizeof(sljit_sw);
-	}
-#endif
-	size += args * 3;
-	if (size > 0) {
+	saved_register_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
+
+	tmp = saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - saveds) : SLJIT_FIRST_SAVED_REG;
+	for (i = SLJIT_S0; i >= tmp; i--) {
+		size = reg_map[i] >= 8 ? 2 : 1;
 		inst = (sljit_ub*)ensure_buf(compiler, 1 + size);
 		FAIL_IF(!inst);
-
 		INC_SIZE(size);
-		if (saveds >= 5) {
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SAVED_EREG2] >= 8, saved_ereg2_is_hireg);
+		if (reg_map[i] >= 8)
 			*inst++ = REX_B;
-			PUSH_REG(reg_lmap[SLJIT_SAVED_EREG2]);
-		}
-		if (saveds >= 4) {
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SAVED_EREG1] >= 8, saved_ereg1_is_hireg);
-			*inst++ = REX_B;
-			PUSH_REG(reg_lmap[SLJIT_SAVED_EREG1]);
-		}
-		if (saveds >= 3) {
-#ifndef _WIN64
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SAVED_REG3] >= 8, saved_reg3_is_hireg);
-			*inst++ = REX_B;
-#else
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SAVED_REG3] < 8, saved_reg3_is_loreg);
-#endif
-			PUSH_REG(reg_lmap[SLJIT_SAVED_REG3]);
-		}
-		if (saveds >= 2) {
-#ifndef _WIN64
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SAVED_REG2] >= 8, saved_reg2_is_hireg);
-			*inst++ = REX_B;
-#else
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SAVED_REG2] < 8, saved_reg2_is_loreg);
-#endif
-			PUSH_REG(reg_lmap[SLJIT_SAVED_REG2]);
-		}
-		if (saveds >= 1) {
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SAVED_REG1] < 8, saved_reg1_is_loreg);
-			PUSH_REG(reg_lmap[SLJIT_SAVED_REG1]);
-		}
-#ifdef _WIN64
-		if (scratches >= 5) {
-			SLJIT_COMPILE_ASSERT(reg_map[SLJIT_TEMPORARY_EREG2] >= 8, temporary_ereg2_is_hireg);
+		PUSH_REG(reg_lmap[i]);
+	}
+
+	for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
+		size = reg_map[i] >= 8 ? 2 : 1;
+		inst = (sljit_ub*)ensure_buf(compiler, 1 + size);
+		FAIL_IF(!inst);
+		INC_SIZE(size);
+		if (reg_map[i] >= 8)
 			*inst++ = REX_B;
-			PUSH_REG(reg_lmap[SLJIT_TEMPORARY_EREG2]);
-		}
-#endif
+		PUSH_REG(reg_lmap[i]);
+	}
+
+	if (args > 0) {
+		size = args * 3;
+		inst = (sljit_ub*)ensure_buf(compiler, 1 + size);
+		FAIL_IF(!inst);
+
+		INC_SIZE(size);
 
 #ifndef _WIN64
 		if (args > 0) {
 			*inst++ = REX_W;
 			*inst++ = MOV_r_rm;
-			*inst++ = MOD_REG | (reg_map[SLJIT_SAVED_REG1] << 3) | 0x7 /* rdi */;
+			*inst++ = MOD_REG | (reg_map[SLJIT_S0] << 3) | 0x7 /* rdi */;
 		}
 		if (args > 1) {
 			*inst++ = REX_W | REX_R;
 			*inst++ = MOV_r_rm;
-			*inst++ = MOD_REG | (reg_lmap[SLJIT_SAVED_REG2] << 3) | 0x6 /* rsi */;
+			*inst++ = MOD_REG | (reg_lmap[SLJIT_S1] << 3) | 0x6 /* rsi */;
 		}
 		if (args > 2) {
 			*inst++ = REX_W | REX_R;
 			*inst++ = MOV_r_rm;
-			*inst++ = MOD_REG | (reg_lmap[SLJIT_SAVED_REG3] << 3) | 0x2 /* rdx */;
+			*inst++ = MOD_REG | (reg_lmap[SLJIT_S2] << 3) | 0x2 /* rdx */;
 		}
 #else
 		if (args > 0) {
 			*inst++ = REX_W;
 			*inst++ = MOV_r_rm;
-			*inst++ = MOD_REG | (reg_map[SLJIT_SAVED_REG1] << 3) | 0x1 /* rcx */;
+			*inst++ = MOD_REG | (reg_map[SLJIT_S0] << 3) | 0x1 /* rcx */;
 		}
 		if (args > 1) {
 			*inst++ = REX_W;
 			*inst++ = MOV_r_rm;
-			*inst++ = MOD_REG | (reg_map[SLJIT_SAVED_REG2] << 3) | 0x2 /* rdx */;
+			*inst++ = MOD_REG | (reg_map[SLJIT_S1] << 3) | 0x2 /* rdx */;
 		}
 		if (args > 2) {
 			*inst++ = REX_W | REX_B;
 			*inst++ = MOV_r_rm;
-			*inst++ = MOD_REG | (reg_map[SLJIT_SAVED_REG3] << 3) | 0x0 /* r8 */;
+			*inst++ = MOD_REG | (reg_map[SLJIT_S2] << 3) | 0x0 /* r8 */;
 		}
 #endif
 	}
 
-	local_size = ((local_size + FIXED_LOCALS_OFFSET + pushed_size + 16 - 1) & ~(16 - 1)) - pushed_size;
+	local_size = ((local_size + SLJIT_LOCALS_OFFSET + saved_register_size + 15) & ~15) - saved_register_size;
 	compiler->local_size = local_size;
+
 #ifdef _WIN64
 	if (local_size > 1024) {
 		/* Allocate stack for the callback, which grows the stack. */
@@ -208,9 +178,10 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compil
 		*inst++ = REX_W;
 		*inst++ = GROUP_BINARY_83;
 		*inst++ = MOD_REG | SUB | 4;
-		/* Pushed size must be divisible by 8. */
-		SLJIT_ASSERT(!(pushed_size & 0x7));
-		if (pushed_size & 0x8) {
+		/* Allocated size for registers must be divisible by 8. */
+		SLJIT_ASSERT(!(saved_register_size & 0x7));
+		/* Aligned to 16 byte. */
+		if (saved_register_size & 0x8) {
 			*inst++ = 5 * sizeof(sljit_sw);
 			local_size -= 5 * sizeof(sljit_sw);
 		} else {
@@ -218,17 +189,19 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compil
 			local_size -= 4 * sizeof(sljit_sw);
 		}
 		/* Second instruction */
-		SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SCRATCH_REG1] < 8, temporary_reg1_is_loreg);
+		SLJIT_COMPILE_ASSERT(reg_map[SLJIT_R0] < 8, temporary_reg1_is_loreg);
 		*inst++ = REX_W;
 		*inst++ = MOV_rm_i32;
-		*inst++ = MOD_REG | reg_lmap[SLJIT_SCRATCH_REG1];
+		*inst++ = MOD_REG | reg_lmap[SLJIT_R0];
 		*(sljit_si*)inst = local_size;
-#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) || (defined SLJIT_DEBUG && SLJIT_DEBUG)
+#if (defined SLJIT_VERBOSE && SLJIT_VERBOSE) \
+			|| (defined SLJIT_ARGUMENT_CHECKS && SLJIT_ARGUMENT_CHECKS)
 		compiler->skip_checks = 1;
 #endif
 		FAIL_IF(sljit_emit_ijump(compiler, SLJIT_CALL1, SLJIT_IMM, SLJIT_FUNC_OFFSET(sljit_grow_stack)));
 	}
 #endif
+
 	SLJIT_ASSERT(local_size > 0);
 	if (local_size <= 127) {
 		inst = (sljit_ub*)ensure_buf(compiler, 1 + 4);
@@ -249,59 +222,59 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_enter(struct sljit_compiler *compil
 		*(sljit_si*)inst = local_size;
 		inst += sizeof(sljit_si);
 	}
+
 #ifdef _WIN64
-	/* Save xmm6 with MOVAPS instruction. */
-	inst = (sljit_ub*)ensure_buf(compiler, 1 + 5);
-	FAIL_IF(!inst);
-	INC_SIZE(5);
-	*inst++ = GROUP_0F;
-	*(sljit_si*)inst = 0x20247429;
+	/* Save xmm6 register: movaps [rsp + 0x20], xmm6 */
+	if (fscratches >= 6 || fsaveds >= 1) {
+		inst = (sljit_ub*)ensure_buf(compiler, 1 + 5);
+		FAIL_IF(!inst);
+		INC_SIZE(5);
+		*inst++ = GROUP_0F;
+		*(sljit_si*)inst = 0x20247429;
+	}
 #endif
 
 	return SLJIT_SUCCESS;
 }
 
-SLJIT_API_FUNC_ATTRIBUTE void sljit_set_context(struct sljit_compiler *compiler, sljit_si args, sljit_si scratches, sljit_si saveds, sljit_si local_size)
+SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_set_context(struct sljit_compiler *compiler,
+	sljit_si options, sljit_si args, sljit_si scratches, sljit_si saveds,
+	sljit_si fscratches, sljit_si fsaveds, sljit_si local_size)
 {
-	sljit_si pushed_size;
+	sljit_si saved_register_size;
 
-	CHECK_ERROR_VOID();
-	check_sljit_set_context(compiler, args, scratches, saveds, local_size);
-
-	compiler->scratches = scratches;
-	compiler->saveds = saveds;
-#if (defined SLJIT_DEBUG && SLJIT_DEBUG)
-	compiler->logical_local_size = local_size;
-#endif
+	CHECK_ERROR();
+	CHECK(check_sljit_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size));
+	set_set_context(compiler, options, args, scratches, saveds, fscratches, fsaveds, local_size);
 
 	/* Including the return address saved by the call instruction. */
-	pushed_size = (saveds + 1) * sizeof(sljit_sw);
-#ifdef _WIN64
-	if (scratches >= 5)
-		pushed_size += sizeof(sljit_sw);
-#endif
-	compiler->local_size = ((local_size + FIXED_LOCALS_OFFSET + pushed_size + 16 - 1) & ~(16 - 1)) - pushed_size;
+	saved_register_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds, 1);
+	compiler->local_size = ((local_size + SLJIT_LOCALS_OFFSET + saved_register_size + 15) & ~15) - saved_register_size;
+	return SLJIT_SUCCESS;
 }
 
 SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compiler, sljit_si op, sljit_si src, sljit_sw srcw)
 {
-	sljit_si size;
+	sljit_si i, tmp, size;
 	sljit_ub *inst;
 
 	CHECK_ERROR();
-	check_sljit_emit_return(compiler, op, src, srcw);
+	CHECK(check_sljit_emit_return(compiler, op, src, srcw));
 
 	compiler->flags_saved = 0;
 	FAIL_IF(emit_mov_before_return(compiler, op, src, srcw));
 
 #ifdef _WIN64
-	/* Restore xmm6 with MOVAPS instruction. */
-	inst = (sljit_ub*)ensure_buf(compiler, 1 + 5);
-	FAIL_IF(!inst);
-	INC_SIZE(5);
-	*inst++ = GROUP_0F;
-	*(sljit_si*)inst = 0x20247428;
+	/* Restore xmm6 register: movaps xmm6, [rsp + 0x20] */
+	if (compiler->fscratches >= 6 || compiler->fsaveds >= 1) {
+		inst = (sljit_ub*)ensure_buf(compiler, 1 + 5);
+		FAIL_IF(!inst);
+		INC_SIZE(5);
+		*inst++ = GROUP_0F;
+		*(sljit_si*)inst = 0x20247428;
+	}
 #endif
+
 	SLJIT_ASSERT(compiler->local_size > 0);
 	if (compiler->local_size <= 127) {
 		inst = (sljit_ub*)ensure_buf(compiler, 1 + 4);
@@ -322,50 +295,31 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_return(struct sljit_compiler *compi
 		*(sljit_si*)inst = compiler->local_size;
 	}
 
-	size = 1 + compiler->saveds;
-#ifndef _WIN64
-	if (compiler->saveds >= 2)
-		size += compiler->saveds - 1;
-#else
-	if (compiler->saveds >= 4)
-		size += compiler->saveds - 3;
-	if (compiler->scratches >= 5)
-		size += (5 - 4) * 2;
-#endif
-	inst = (sljit_ub*)ensure_buf(compiler, 1 + size);
-	FAIL_IF(!inst);
-
-	INC_SIZE(size);
-
-#ifdef _WIN64
-	if (compiler->scratches >= 5) {
-		*inst++ = REX_B;
-		POP_REG(reg_lmap[SLJIT_TEMPORARY_EREG2]);
-	}
-#endif
-	if (compiler->saveds >= 1)
-		POP_REG(reg_map[SLJIT_SAVED_REG1]);
-	if (compiler->saveds >= 2) {
-#ifndef _WIN64
-		*inst++ = REX_B;
-#endif
-		POP_REG(reg_lmap[SLJIT_SAVED_REG2]);
-	}
-	if (compiler->saveds >= 3) {
-#ifndef _WIN64
-		*inst++ = REX_B;
-#endif
-		POP_REG(reg_lmap[SLJIT_SAVED_REG3]);
-	}
-	if (compiler->saveds >= 4) {
-		*inst++ = REX_B;
-		POP_REG(reg_lmap[SLJIT_SAVED_EREG1]);
+	tmp = compiler->scratches;
+	for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {
+		size = reg_map[i] >= 8 ? 2 : 1;
+		inst = (sljit_ub*)ensure_buf(compiler, 1 + size);
+		FAIL_IF(!inst);
+		INC_SIZE(size);
+		if (reg_map[i] >= 8)
+			*inst++ = REX_B;
+		POP_REG(reg_lmap[i]);
 	}
-	if (compiler->saveds >= 5) {
-		*inst++ = REX_B;
-		POP_REG(reg_lmap[SLJIT_SAVED_EREG2]);
+
+	tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
+	for (i = tmp; i <= SLJIT_S0; i++) {
+		size = reg_map[i] >= 8 ? 2 : 1;
+		inst = (sljit_ub*)ensure_buf(compiler, 1 + size);
+		FAIL_IF(!inst);
+		INC_SIZE(size);
+		if (reg_map[i] >= 8)
+			*inst++ = REX_B;
+		POP_REG(reg_lmap[i]);
 	}
 
+	inst = (sljit_ub*)ensure_buf(compiler, 1 + 1);
+	FAIL_IF(!inst);
+	INC_SIZE(1);
 	RET();
 	return SLJIT_SUCCESS;
 }
@@ -409,72 +363,67 @@ static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si
 	SLJIT_ASSERT(!(flags & (EX86_BIN_INS | EX86_SHIFT_INS)) || (flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) == 0);
 	/* Both size flags cannot be switched on. */
 	SLJIT_ASSERT((flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) != (EX86_BYTE_ARG | EX86_HALF_ARG));
-#if (defined SLJIT_SSE2 && SLJIT_SSE2)
 	/* SSE2 and immediate is not possible. */
 	SLJIT_ASSERT(!(a & SLJIT_IMM) || !(flags & EX86_SSE2));
 	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));
-#endif
 
 	size &= 0xf;
 	inst_size = size;
 
-	if ((b & SLJIT_MEM) && !(b & OFFS_REG_MASK) && NOT_HALFWORD(immb)) {
-		if (emit_load_imm64(compiler, TMP_REG3, immb))
-			return NULL;
-		immb = 0;
-		if (b & REG_MASK)
-			b |= TO_OFFS_REG(TMP_REG3);
-		else
-			b |= TMP_REG3;
-	}
-
 	if (!compiler->mode32 && !(flags & EX86_NO_REXW))
 		rex |= REX_W;
 	else if (flags & EX86_REX)
 		rex |= REX;
 
-#if (defined SLJIT_SSE2 && SLJIT_SSE2)
 	if (flags & (EX86_PREF_F2 | EX86_PREF_F3))
 		inst_size++;
-#endif
 	if (flags & EX86_PREF_66)
 		inst_size++;
 
 	/* Calculate size of b. */
 	inst_size += 1; /* mod r/m byte. */
 	if (b & SLJIT_MEM) {
+		if (!(b & OFFS_REG_MASK)) {
+			if (NOT_HALFWORD(immb)) {
+				if (emit_load_imm64(compiler, TMP_REG3, immb))
+					return NULL;
+				immb = 0;
+				if (b & REG_MASK)
+					b |= TO_OFFS_REG(TMP_REG3);
+				else
+					b |= TMP_REG3;
+			}
+			else if (reg_lmap[b & REG_MASK] == 4)
+				b |= TO_OFFS_REG(SLJIT_SP);
+		}
+
 		if ((b & REG_MASK) == SLJIT_UNUSED)
 			inst_size += 1 + sizeof(sljit_si); /* SIB byte required to avoid RIP based addressing. */
 		else {
 			if (reg_map[b & REG_MASK] >= 8)
 				rex |= REX_B;
-			if (immb != 0 && !(b & OFFS_REG_MASK)) {
+
+			if (immb != 0 && (!(b & OFFS_REG_MASK) || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_SP))) {
 				/* Immediate operand. */
 				if (immb <= 127 && immb >= -128)
 					inst_size += sizeof(sljit_sb);
 				else
 					inst_size += sizeof(sljit_si);
 			}
-		}
-
-		if ((b & REG_MASK) == SLJIT_LOCALS_REG && !(b & OFFS_REG_MASK))
-			b |= TO_OFFS_REG(SLJIT_LOCALS_REG);
+			else if (reg_lmap[b & REG_MASK] == 5)
+				inst_size += sizeof(sljit_sb);
 
-		if ((b & OFFS_REG_MASK) != SLJIT_UNUSED) {
-			inst_size += 1; /* SIB byte. */
-			if (reg_map[OFFS_REG(b)] >= 8)
-				rex |= REX_X;
+			if ((b & OFFS_REG_MASK) != SLJIT_UNUSED) {
+				inst_size += 1; /* SIB byte. */
+				if (reg_map[OFFS_REG(b)] >= 8)
+					rex |= REX_X;
+			}
 		}
 	}
-#if (defined SLJIT_SSE2 && SLJIT_SSE2)
-	else if (!(flags & EX86_SSE2) && reg_map[b] >= 8)
+	else if (!(flags & EX86_SSE2_OP2) && reg_map[b] >= 8)
 		rex |= REX_B;
-#else
-	else if (reg_map[b] >= 8)
-		rex |= REX_B;
-#endif
 
 	if (a & SLJIT_IMM) {
 		if (flags & EX86_BIN_INS) {
@@ -500,13 +449,8 @@ static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si
 	else {
 		SLJIT_ASSERT(!(flags & EX86_SHIFT_INS) || a == SLJIT_PREF_SHIFT_REG);
 		/* reg_map[SLJIT_PREF_SHIFT_REG] is less than 8. */
-#if (defined SLJIT_SSE2 && SLJIT_SSE2)
-		if (!(flags & EX86_SSE2) && reg_map[a] >= 8)
+		if (!(flags & EX86_SSE2_OP1) && reg_map[a] >= 8)
 			rex |= REX_R;
-#else
-		if (reg_map[a] >= 8)
-			rex |= REX_R;
-#endif
 	}
 
 	if (rex)
@@ -517,12 +461,10 @@ static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si
 
 	/* Encoding the byte. */
 	INC_SIZE(inst_size);
-#if (defined SLJIT_SSE2 && SLJIT_SSE2)
 	if (flags & EX86_PREF_F2)
 		*inst++ = 0xf2;
 	if (flags & EX86_PREF_F3)
 		*inst++ = 0xf3;
-#endif
 	if (flags & EX86_PREF_66)
 		*inst++ = 0x66;
 	if (rex)
@@ -536,15 +478,10 @@ static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si
 
 		if ((a & SLJIT_IMM) || (a == 0))
 			*buf_ptr = 0;
-#if (defined SLJIT_SSE2 && SLJIT_SSE2)
-		else if (!(flags & EX86_SSE2))
+		else if (!(flags & EX86_SSE2_OP1))
 			*buf_ptr = reg_lmap[a] << 3;
 		else
 			*buf_ptr = a << 3;
-#else
-		else
-			*buf_ptr = reg_lmap[a] << 3;
-#endif
 	}
 	else {
 		if (a & SLJIT_IMM) {
@@ -558,14 +495,10 @@ static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si
 	}
 
 	if (!(b & SLJIT_MEM))
-#if (defined SLJIT_SSE2 && SLJIT_SSE2)
-		*buf_ptr++ |= MOD_REG + ((!(flags & EX86_SSE2)) ? reg_lmap[b] : b);
-#else
-		*buf_ptr++ |= MOD_REG + reg_lmap[b];
-#endif
+		*buf_ptr++ |= MOD_REG + ((!(flags & EX86_SSE2_OP2)) ? reg_lmap[b] : b);
 	else if ((b & REG_MASK) != SLJIT_UNUSED) {
-		if ((b & OFFS_REG_MASK) == SLJIT_UNUSED || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_LOCALS_REG)) {
-			if (immb != 0) {
+		if ((b & OFFS_REG_MASK) == SLJIT_UNUSED || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_SP)) {
+			if (immb != 0 || reg_lmap[b & REG_MASK] == 5) {
 				if (immb <= 127 && immb >= -128)
 					*buf_ptr |= 0x40;
 				else
@@ -579,7 +512,7 @@ static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si
 				*buf_ptr++ = reg_lmap[b & REG_MASK] | (reg_lmap[OFFS_REG(b)] << 3);
 			}
 
-			if (immb != 0) {
+			if (immb != 0 || reg_lmap[b & REG_MASK] == 5) {
 				if (immb <= 127 && immb >= -128)
 					*buf_ptr++ = immb; /* 8 bit displacement. */
 				else {
@@ -589,8 +522,12 @@ static sljit_ub* emit_x86_instruction(struct sljit_compiler *compiler, sljit_si
 			}
 		}
 		else {
+			if (reg_lmap[b & REG_MASK] == 5)
+				*buf_ptr |= 0x40;
 			*buf_ptr++ |= 0x04;
 			*buf_ptr++ = reg_lmap[b & REG_MASK] | (reg_lmap[OFFS_REG(b)] << 3) | (immb << 6);
+			if (reg_lmap[b & REG_MASK] == 5)
+				*buf_ptr++ = 0;
 		}
 	}
 	else {
@@ -621,7 +558,7 @@ static SLJIT_INLINE sljit_si call_with_args(struct sljit_compiler *compiler, slj
 	sljit_ub *inst;
 
 #ifndef _WIN64
-	SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SCRATCH_REG2] == 6 && reg_map[SLJIT_SCRATCH_REG1] < 8 && reg_map[SLJIT_SCRATCH_REG3] < 8, args_registers);
+	SLJIT_COMPILE_ASSERT(reg_map[SLJIT_R1] == 6 && reg_map[SLJIT_R0] < 8 && reg_map[SLJIT_R2] < 8, args_registers);
 
 	inst = (sljit_ub*)ensure_buf(compiler, 1 + ((type < SLJIT_CALL3) ? 3 : 6));
 	FAIL_IF(!inst);
@@ -629,13 +566,13 @@ static SLJIT_INLINE sljit_si call_with_args(struct sljit_compiler *compiler, slj
 	if (type >= SLJIT_CALL3) {
 		*inst++ = REX_W;
 		*inst++ = MOV_r_rm;
-		*inst++ = MOD_REG | (0x2 /* rdx */ << 3) | reg_lmap[SLJIT_SCRATCH_REG3];
+		*inst++ = MOD_REG | (0x2 /* rdx */ << 3) | reg_lmap[SLJIT_R2];
 	}
 	*inst++ = REX_W;
 	*inst++ = MOV_r_rm;
-	*inst++ = MOD_REG | (0x7 /* rdi */ << 3) | reg_lmap[SLJIT_SCRATCH_REG1];
+	*inst++ = MOD_REG | (0x7 /* rdi */ << 3) | reg_lmap[SLJIT_R0];
 #else
-	SLJIT_COMPILE_ASSERT(reg_map[SLJIT_SCRATCH_REG2] == 2 && reg_map[SLJIT_SCRATCH_REG1] < 8 && reg_map[SLJIT_SCRATCH_REG3] < 8, args_registers);
+	SLJIT_COMPILE_ASSERT(reg_map[SLJIT_R1] == 2 && reg_map[SLJIT_R0] < 8 && reg_map[SLJIT_R2] < 8, args_registers);
 
 	inst = (sljit_ub*)ensure_buf(compiler, 1 + ((type < SLJIT_CALL3) ? 3 : 6));
 	FAIL_IF(!inst);
@@ -643,11 +580,11 @@ static SLJIT_INLINE sljit_si call_with_args(struct sljit_compiler *compiler, slj
 	if (type >= SLJIT_CALL3) {
 		*inst++ = REX_W | REX_R;
 		*inst++ = MOV_r_rm;
-		*inst++ = MOD_REG | (0x0 /* r8 */ << 3) | reg_lmap[SLJIT_SCRATCH_REG3];
+		*inst++ = MOD_REG | (0x0 /* r8 */ << 3) | reg_lmap[SLJIT_R2];
 	}
 	*inst++ = REX_W;
 	*inst++ = MOV_r_rm;
-	*inst++ = MOD_REG | (0x1 /* rcx */ << 3) | reg_lmap[SLJIT_SCRATCH_REG1];
+	*inst++ = MOD_REG | (0x1 /* rcx */ << 3) | reg_lmap[SLJIT_R0];
 #endif
 	return SLJIT_SUCCESS;
 }
@@ -657,7 +594,7 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_enter(struct sljit_compiler *c
 	sljit_ub *inst;
 
 	CHECK_ERROR();
-	check_sljit_emit_fast_enter(compiler, dst, dstw);
+	CHECK(check_sljit_emit_fast_enter(compiler, dst, dstw));
 	ADJUST_LOCAL_OFFSET(dst, dstw);
 
 	/* For UNUSED dst. Uncommon, but possible. */
@@ -694,7 +631,7 @@ SLJIT_API_FUNC_ATTRIBUTE sljit_si sljit_emit_fast_return(struct sljit_compiler *
 	sljit_ub *inst;
 
 	CHECK_ERROR();
-	check_sljit_emit_fast_return(compiler, src, srcw);
+	CHECK(check_sljit_emit_fast_return(compiler, src, srcw));
 	ADJUST_LOCAL_OFFSET(src, srcw);
 
 	if ((src & SLJIT_IMM) && NOT_HALFWORD(srcw)) {