1416 lines
38 KiB
C
1416 lines
38 KiB
C
/*
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* Stack-less Just-In-Time compiler
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*
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* Copyright Zoltan Herczeg (hzmester@freemail.hu). All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are
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* permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) AND CONTRIBUTORS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE COPYRIGHT HOLDER(S) OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* x86 64-bit arch dependent functions. */
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/* --------------------------------------------------------------------- */
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/* Operators */
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/* --------------------------------------------------------------------- */
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static sljit_s32 emit_load_imm64(struct sljit_compiler *compiler, sljit_s32 reg, sljit_sw imm)
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{
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sljit_u8 *inst;
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inst = (sljit_u8*)ensure_buf(compiler, 1 + 2 + sizeof(sljit_sw));
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FAIL_IF(!inst);
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INC_SIZE(2 + sizeof(sljit_sw));
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inst[0] = REX_W | ((reg_map[reg] <= 7) ? 0 : REX_B);
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inst[1] = U8(MOV_r_i32 | reg_lmap[reg]);
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sljit_unaligned_store_sw(inst + 2, imm);
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return SLJIT_SUCCESS;
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}
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static sljit_s32 emit_do_imm32(struct sljit_compiler *compiler, sljit_u8 rex, sljit_u8 opcode, sljit_sw imm)
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{
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sljit_u8 *inst;
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sljit_uw length = (rex ? 2 : 1) + sizeof(sljit_s32);
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inst = (sljit_u8*)ensure_buf(compiler, 1 + length);
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FAIL_IF(!inst);
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INC_SIZE(length);
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if (rex)
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*inst++ = rex;
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*inst++ = opcode;
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sljit_unaligned_store_s32(inst, (sljit_s32)imm);
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return SLJIT_SUCCESS;
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}
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static sljit_u8* emit_x86_instruction(struct sljit_compiler *compiler, sljit_uw size,
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/* The register or immediate operand. */
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sljit_s32 a, sljit_sw imma,
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/* The general operand (not immediate). */
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sljit_s32 b, sljit_sw immb)
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{
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sljit_u8 *inst;
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sljit_u8 *buf_ptr;
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sljit_u8 rex = 0;
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sljit_u8 reg_lmap_b;
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sljit_uw flags = size;
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sljit_uw inst_size;
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/* The immediate operand must be 32 bit. */
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SLJIT_ASSERT(a != SLJIT_IMM || compiler->mode32 || IS_HALFWORD(imma));
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/* Both cannot be switched on. */
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SLJIT_ASSERT((flags & (EX86_BIN_INS | EX86_SHIFT_INS)) != (EX86_BIN_INS | EX86_SHIFT_INS));
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/* Size flags not allowed for typed instructions. */
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SLJIT_ASSERT(!(flags & (EX86_BIN_INS | EX86_SHIFT_INS)) || (flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) == 0);
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/* Both size flags cannot be switched on. */
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SLJIT_ASSERT((flags & (EX86_BYTE_ARG | EX86_HALF_ARG)) != (EX86_BYTE_ARG | EX86_HALF_ARG));
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/* SSE2 and immediate is not possible. */
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SLJIT_ASSERT(a != SLJIT_IMM || !(flags & EX86_SSE2));
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SLJIT_ASSERT(((flags & (EX86_PREF_F2 | EX86_PREF_F3 | EX86_PREF_66))
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& ((flags & (EX86_PREF_F2 | EX86_PREF_F3 | EX86_PREF_66)) - 1)) == 0);
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SLJIT_ASSERT((flags & (EX86_VEX_EXT | EX86_REX)) != EX86_VEX_EXT);
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size &= 0xf;
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/* The mod r/m byte is always present. */
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inst_size = size + 1;
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if (!compiler->mode32 && !(flags & EX86_NO_REXW))
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rex |= REX_W;
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else if (flags & EX86_REX)
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rex |= REX;
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if (flags & (EX86_PREF_F2 | EX86_PREF_F3 | EX86_PREF_66))
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inst_size++;
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/* Calculate size of b. */
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if (b & SLJIT_MEM) {
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if (!(b & OFFS_REG_MASK) && NOT_HALFWORD(immb)) {
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PTR_FAIL_IF(emit_load_imm64(compiler, TMP_REG2, immb));
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immb = 0;
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if (b & REG_MASK)
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b |= TO_OFFS_REG(TMP_REG2);
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else
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b |= TMP_REG2;
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}
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if (!(b & REG_MASK))
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inst_size += 1 + sizeof(sljit_s32); /* SIB byte required to avoid RIP based addressing. */
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else {
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if (immb != 0 && !(b & OFFS_REG_MASK)) {
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/* Immediate operand. */
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if (immb <= 127 && immb >= -128)
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inst_size += sizeof(sljit_s8);
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else
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inst_size += sizeof(sljit_s32);
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} else if (reg_lmap[b & REG_MASK] == 5) {
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/* Swap registers if possible. */
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if ((b & OFFS_REG_MASK) && (immb & 0x3) == 0 && reg_lmap[OFFS_REG(b)] != 5)
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b = SLJIT_MEM | OFFS_REG(b) | TO_OFFS_REG(b & REG_MASK);
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else
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inst_size += sizeof(sljit_s8);
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}
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if (reg_map[b & REG_MASK] >= 8)
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rex |= REX_B;
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if (reg_lmap[b & REG_MASK] == 4 && !(b & OFFS_REG_MASK))
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b |= TO_OFFS_REG(SLJIT_SP);
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if (b & OFFS_REG_MASK) {
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inst_size += 1; /* SIB byte. */
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if (reg_map[OFFS_REG(b)] >= 8)
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rex |= REX_X;
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}
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}
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} else if (!(flags & EX86_SSE2_OP2)) {
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if (reg_map[b] >= 8)
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rex |= REX_B;
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} else if (freg_map[b] >= 8)
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rex |= REX_B;
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if ((flags & EX86_VEX_EXT) && (rex & 0x3)) {
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SLJIT_ASSERT(size == 2);
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size++;
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inst_size++;
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}
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if (a == SLJIT_IMM) {
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if (flags & EX86_BIN_INS) {
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if (imma <= 127 && imma >= -128) {
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inst_size += 1;
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flags |= EX86_BYTE_ARG;
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} else
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inst_size += 4;
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} else if (flags & EX86_SHIFT_INS) {
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SLJIT_ASSERT(imma <= (compiler->mode32 ? 0x1f : 0x3f));
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if (imma != 1) {
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inst_size++;
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flags |= EX86_BYTE_ARG;
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}
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} else if (flags & EX86_BYTE_ARG)
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inst_size++;
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else if (flags & EX86_HALF_ARG)
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inst_size += sizeof(short);
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else
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inst_size += sizeof(sljit_s32);
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} else {
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SLJIT_ASSERT(!(flags & EX86_SHIFT_INS) || a == SLJIT_PREF_SHIFT_REG);
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/* reg_map[SLJIT_PREF_SHIFT_REG] is less than 8. */
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if (!(flags & EX86_SSE2_OP1)) {
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if (reg_map[a] >= 8)
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rex |= REX_R;
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}
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else if (freg_map[a] >= 8)
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rex |= REX_R;
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}
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if (rex)
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inst_size++;
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inst = (sljit_u8*)ensure_buf(compiler, 1 + inst_size);
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PTR_FAIL_IF(!inst);
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/* Encoding prefixes. */
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INC_SIZE(inst_size);
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if (flags & EX86_PREF_F2)
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*inst++ = 0xf2;
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else if (flags & EX86_PREF_F3)
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*inst++ = 0xf3;
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else if (flags & EX86_PREF_66)
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*inst++ = 0x66;
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/* Rex is always the last prefix. */
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if (rex)
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*inst++ = rex;
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buf_ptr = inst + size;
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/* Encode mod/rm byte. */
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if (!(flags & EX86_SHIFT_INS)) {
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if ((flags & EX86_BIN_INS) && a == SLJIT_IMM)
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*inst = (flags & EX86_BYTE_ARG) ? GROUP_BINARY_83 : GROUP_BINARY_81;
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if (a == SLJIT_IMM)
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*buf_ptr = 0;
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else if (!(flags & EX86_SSE2_OP1))
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*buf_ptr = U8(reg_lmap[a] << 3);
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else
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*buf_ptr = U8(freg_lmap[a] << 3);
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} else {
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if (a == SLJIT_IMM) {
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if (imma == 1)
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*inst = GROUP_SHIFT_1;
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else
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*inst = GROUP_SHIFT_N;
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} else
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*inst = GROUP_SHIFT_CL;
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*buf_ptr = 0;
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}
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if (!(b & SLJIT_MEM)) {
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*buf_ptr = U8(*buf_ptr | MOD_REG | (!(flags & EX86_SSE2_OP2) ? reg_lmap[b] : freg_lmap[b]));
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buf_ptr++;
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} else if (b & REG_MASK) {
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reg_lmap_b = reg_lmap[b & REG_MASK];
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if (!(b & OFFS_REG_MASK) || (b & OFFS_REG_MASK) == TO_OFFS_REG(SLJIT_SP)) {
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if (immb != 0 || reg_lmap_b == 5) {
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if (immb <= 127 && immb >= -128)
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*buf_ptr |= 0x40;
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else
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*buf_ptr |= 0x80;
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}
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if (!(b & OFFS_REG_MASK))
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*buf_ptr++ |= reg_lmap_b;
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else {
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buf_ptr[0] |= 0x04;
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buf_ptr[1] = U8(reg_lmap_b | (reg_lmap[OFFS_REG(b)] << 3));
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buf_ptr += 2;
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}
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if (immb != 0 || reg_lmap_b == 5) {
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if (immb <= 127 && immb >= -128)
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*buf_ptr++ = U8(immb); /* 8 bit displacement. */
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else {
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sljit_unaligned_store_s32(buf_ptr, (sljit_s32)immb); /* 32 bit displacement. */
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buf_ptr += sizeof(sljit_s32);
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}
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}
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} else {
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if (reg_lmap_b == 5)
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*buf_ptr |= 0x40;
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buf_ptr[0] |= 0x04;
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buf_ptr[1] = U8(reg_lmap_b | (reg_lmap[OFFS_REG(b)] << 3) | (immb << 6));
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buf_ptr += 2;
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if (reg_lmap_b == 5)
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*buf_ptr++ = 0;
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}
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} else {
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buf_ptr[0] |= 0x04;
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buf_ptr[1] = 0x25;
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buf_ptr += 2;
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sljit_unaligned_store_s32(buf_ptr, (sljit_s32)immb); /* 32 bit displacement. */
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buf_ptr += sizeof(sljit_s32);
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}
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if (a == SLJIT_IMM) {
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if (flags & EX86_BYTE_ARG)
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*buf_ptr = U8(imma);
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else if (flags & EX86_HALF_ARG)
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sljit_unaligned_store_s16(buf_ptr, (sljit_s16)imma);
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else if (!(flags & EX86_SHIFT_INS))
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sljit_unaligned_store_s32(buf_ptr, (sljit_s32)imma);
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}
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return inst;
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}
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static sljit_s32 emit_vex_instruction(struct sljit_compiler *compiler, sljit_uw op,
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/* The first and second register operand. */
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sljit_s32 a, sljit_s32 v,
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/* The general operand (not immediate). */
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sljit_s32 b, sljit_sw immb)
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{
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sljit_u8 *inst;
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sljit_u8 vex = 0;
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sljit_u8 vex_m = 0;
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sljit_uw size;
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SLJIT_ASSERT(((op & (EX86_PREF_F2 | EX86_PREF_F3 | EX86_PREF_66))
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& ((op & (EX86_PREF_F2 | EX86_PREF_F3 | EX86_PREF_66)) - 1)) == 0);
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op |= EX86_REX;
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if (op & VEX_OP_0F38)
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vex_m = 0x2;
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else if (op & VEX_OP_0F3A)
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vex_m = 0x3;
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if ((op & VEX_W) || ((op & VEX_AUTO_W) && !compiler->mode32)) {
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if (vex_m == 0)
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vex_m = 0x1;
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vex |= 0x80;
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}
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if (op & EX86_PREF_66)
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vex |= 0x1;
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else if (op & EX86_PREF_F2)
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vex |= 0x3;
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else if (op & EX86_PREF_F3)
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vex |= 0x2;
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op &= ~(EX86_PREF_66 | EX86_PREF_F2 | EX86_PREF_F3);
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if (op & VEX_256)
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vex |= 0x4;
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vex = U8(vex | ((((op & VEX_SSE2_OPV) ? freg_map[v] : reg_map[v]) ^ 0xf) << 3));
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size = op & ~(sljit_uw)0xff;
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size |= (vex_m == 0) ? (EX86_VEX_EXT | 2) : 3;
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inst = emit_x86_instruction(compiler, size, a, 0, b, immb);
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FAIL_IF(!inst);
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SLJIT_ASSERT((inst[-1] & 0xf0) == REX);
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/* If X or B is present in REX prefix. */
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if (vex_m == 0 && inst[-1] & 0x3)
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vex_m = 0x1;
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if (vex_m == 0) {
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vex |= U8(((inst[-1] >> 2) ^ 0x1) << 7);
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inst[-1] = 0xc5;
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inst[0] = vex;
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inst[1] = U8(op);
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return SLJIT_SUCCESS;
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}
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vex_m |= U8((inst[-1] ^ 0x7) << 5);
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inst[-1] = 0xc4;
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inst[0] = vex_m;
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inst[1] = vex;
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inst[2] = U8(op);
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return SLJIT_SUCCESS;
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}
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/* --------------------------------------------------------------------- */
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/* Enter / return */
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/* --------------------------------------------------------------------- */
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static sljit_u8* detect_far_jump_type(struct sljit_jump *jump, sljit_u8 *code_ptr)
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{
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sljit_uw type = jump->flags >> TYPE_SHIFT;
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int short_addr = !(jump->flags & SLJIT_REWRITABLE_JUMP) && (jump->flags & JUMP_ADDR) && (jump->u.target <= 0xffffffff);
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/* The relative jump below specialized for this case. */
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SLJIT_ASSERT(reg_map[TMP_REG2] >= 8 && TMP_REG2 != SLJIT_TMP_DEST_REG);
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if (type < SLJIT_JUMP) {
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/* Invert type. */
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code_ptr[0] = U8(get_jump_code(type ^ 0x1) - 0x10);
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code_ptr[1] = short_addr ? (6 + 3) : (10 + 3);
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code_ptr += 2;
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}
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code_ptr[0] = short_addr ? REX_B : (REX_W | REX_B);
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code_ptr[1] = MOV_r_i32 | reg_lmap[TMP_REG2];
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code_ptr += 2;
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jump->addr = (sljit_uw)code_ptr;
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if (!(jump->flags & JUMP_ADDR))
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jump->flags |= PATCH_MD;
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else if (short_addr)
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sljit_unaligned_store_s32(code_ptr, (sljit_s32)jump->u.target);
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else
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sljit_unaligned_store_sw(code_ptr, (sljit_sw)jump->u.target);
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code_ptr += short_addr ? sizeof(sljit_s32) : sizeof(sljit_sw);
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code_ptr[0] = REX_B;
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code_ptr[1] = GROUP_FF;
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code_ptr[2] = U8(MOD_REG | (type >= SLJIT_FAST_CALL ? CALL_rm : JMP_rm) | reg_lmap[TMP_REG2]);
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return code_ptr + 3;
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}
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static sljit_u8* generate_mov_addr_code(struct sljit_jump *jump, sljit_u8 *code_ptr, sljit_u8 *code, sljit_sw executable_offset)
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{
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sljit_uw addr;
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sljit_sw diff;
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SLJIT_UNUSED_ARG(executable_offset);
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SLJIT_ASSERT(((jump->flags >> JUMP_SIZE_SHIFT) & 0x1f) <= 10);
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if (jump->flags & JUMP_ADDR)
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addr = jump->u.target;
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else
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addr = (sljit_uw)SLJIT_ADD_EXEC_OFFSET(code, executable_offset) + jump->u.label->size;
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if (addr > 0xffffffffl) {
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diff = (sljit_sw)addr - (sljit_sw)SLJIT_ADD_EXEC_OFFSET(code_ptr, executable_offset);
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if (diff <= HALFWORD_MAX && diff >= HALFWORD_MIN) {
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SLJIT_ASSERT(((jump->flags >> JUMP_SIZE_SHIFT) & 0x1f) >= 7);
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code_ptr -= SSIZE_OF(s32) - 1;
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SLJIT_ASSERT((code_ptr[-3 - SSIZE_OF(s32)] & 0xf8) == REX_W);
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SLJIT_ASSERT((code_ptr[-2 - SSIZE_OF(s32)] & 0xf8) == MOV_r_i32);
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code_ptr[-3 - SSIZE_OF(s32)] = U8(REX_W | ((code_ptr[-3 - SSIZE_OF(s32)] & 0x1) << 2));
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code_ptr[-1 - SSIZE_OF(s32)] = U8(((code_ptr[-2 - SSIZE_OF(s32)] & 0x7) << 3) | 0x5);
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code_ptr[-2 - SSIZE_OF(s32)] = LEA_r_m;
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jump->flags |= PATCH_MW;
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return code_ptr;
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}
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jump->flags |= PATCH_MD;
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return code_ptr;
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}
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code_ptr -= 2 + sizeof(sljit_uw);
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SLJIT_ASSERT((code_ptr[0] & 0xf8) == REX_W);
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SLJIT_ASSERT((code_ptr[1] & 0xf8) == MOV_r_i32);
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if ((code_ptr[0] & 0x07) != 0) {
|
|
SLJIT_ASSERT(((jump->flags >> JUMP_SIZE_SHIFT) & 0x1f) >= 6);
|
|
code_ptr[0] = U8(code_ptr[0] & ~0x08);
|
|
code_ptr += 2 + sizeof(sljit_s32);
|
|
} else {
|
|
SLJIT_ASSERT(((jump->flags >> JUMP_SIZE_SHIFT) & 0x1f) >= 5);
|
|
code_ptr[0] = code_ptr[1];
|
|
code_ptr += 1 + sizeof(sljit_s32);
|
|
}
|
|
|
|
return code_ptr;
|
|
}
|
|
|
|
#ifdef _WIN64
|
|
typedef struct {
|
|
sljit_sw regs[2];
|
|
} sljit_sse2_reg;
|
|
#endif /* _WIN64 */
|
|
|
|
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 local_size)
|
|
{
|
|
sljit_uw size;
|
|
sljit_s32 word_arg_count = 0;
|
|
sljit_s32 saved_arg_count = SLJIT_KEPT_SAVEDS_COUNT(options);
|
|
sljit_s32 saved_regs_size, tmp, i;
|
|
#ifdef _WIN64
|
|
sljit_s32 fscratches;
|
|
sljit_s32 fsaveds;
|
|
sljit_s32 saved_float_regs_size;
|
|
sljit_s32 saved_float_regs_offset = 0;
|
|
sljit_s32 float_arg_count = 0;
|
|
#endif /* _WIN64 */
|
|
sljit_u8 *inst;
|
|
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_enter(compiler, options, arg_types, scratches, saveds, local_size));
|
|
set_emit_enter(compiler, options, arg_types, scratches, saveds, local_size);
|
|
|
|
scratches = ENTER_GET_REGS(scratches);
|
|
#ifdef _WIN64
|
|
saveds = ENTER_GET_REGS(saveds);
|
|
fscratches = compiler->fscratches;
|
|
fsaveds = compiler->fsaveds;
|
|
#endif /* _WIN64 */
|
|
|
|
if (options & SLJIT_ENTER_REG_ARG)
|
|
arg_types = 0;
|
|
|
|
/* Emit ENDBR64 at function entry if needed. */
|
|
FAIL_IF(emit_endbranch(compiler));
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
/* Including the return address saved by the call instruction. */
|
|
saved_regs_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds - saved_arg_count, 1);
|
|
|
|
tmp = SLJIT_S0 - saveds;
|
|
for (i = SLJIT_S0 - saved_arg_count; i > tmp; i--) {
|
|
size = reg_map[i] >= 8 ? 2 : 1;
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(size);
|
|
if (reg_map[i] >= 8)
|
|
*inst++ = REX_B;
|
|
PUSH_REG(reg_lmap[i]);
|
|
}
|
|
|
|
for (i = scratches; i >= SLJIT_FIRST_SAVED_REG; i--) {
|
|
size = reg_map[i] >= 8 ? 2 : 1;
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(size);
|
|
if (reg_map[i] >= 8)
|
|
*inst++ = REX_B;
|
|
PUSH_REG(reg_lmap[i]);
|
|
}
|
|
|
|
#ifdef _WIN64
|
|
local_size += SLJIT_LOCALS_OFFSET;
|
|
saved_float_regs_size = GET_SAVED_FLOAT_REGISTERS_SIZE(fscratches, fsaveds, sse2_reg);
|
|
|
|
if (saved_float_regs_size > 0) {
|
|
saved_float_regs_offset = ((local_size + 0xf) & ~0xf);
|
|
local_size = saved_float_regs_offset + saved_float_regs_size;
|
|
}
|
|
#else /* !_WIN64 */
|
|
SLJIT_ASSERT(SLJIT_LOCALS_OFFSET == 0);
|
|
#endif /* _WIN64 */
|
|
|
|
arg_types >>= SLJIT_ARG_SHIFT;
|
|
|
|
while (arg_types > 0) {
|
|
if ((arg_types & SLJIT_ARG_MASK) < SLJIT_ARG_TYPE_F64) {
|
|
tmp = 0;
|
|
#ifndef _WIN64
|
|
switch (word_arg_count) {
|
|
case 0:
|
|
tmp = SLJIT_R2;
|
|
break;
|
|
case 1:
|
|
tmp = SLJIT_R1;
|
|
break;
|
|
case 2:
|
|
tmp = TMP_REG1;
|
|
break;
|
|
default:
|
|
tmp = SLJIT_R3;
|
|
break;
|
|
}
|
|
#else /* !_WIN64 */
|
|
switch (word_arg_count + float_arg_count) {
|
|
case 0:
|
|
tmp = SLJIT_R3;
|
|
break;
|
|
case 1:
|
|
tmp = SLJIT_R1;
|
|
break;
|
|
case 2:
|
|
tmp = SLJIT_R2;
|
|
break;
|
|
default:
|
|
tmp = TMP_REG1;
|
|
break;
|
|
}
|
|
#endif /* _WIN64 */
|
|
if (arg_types & SLJIT_ARG_TYPE_SCRATCH_REG) {
|
|
if (tmp != SLJIT_R0 + word_arg_count)
|
|
EMIT_MOV(compiler, SLJIT_R0 + word_arg_count, 0, tmp, 0);
|
|
} else {
|
|
EMIT_MOV(compiler, SLJIT_S0 - saved_arg_count, 0, tmp, 0);
|
|
saved_arg_count++;
|
|
}
|
|
word_arg_count++;
|
|
} else {
|
|
#ifdef _WIN64
|
|
SLJIT_COMPILE_ASSERT(SLJIT_FR0 == 1, float_register_index_start);
|
|
float_arg_count++;
|
|
if (float_arg_count != float_arg_count + word_arg_count)
|
|
FAIL_IF(emit_sse2_load(compiler, (arg_types & SLJIT_ARG_MASK) == SLJIT_ARG_TYPE_F32,
|
|
float_arg_count, float_arg_count + word_arg_count, 0));
|
|
#endif /* _WIN64 */
|
|
}
|
|
arg_types >>= SLJIT_ARG_SHIFT;
|
|
}
|
|
|
|
local_size = ((local_size + saved_regs_size + 0xf) & ~0xf) - saved_regs_size;
|
|
compiler->local_size = local_size;
|
|
|
|
#ifdef _WIN64
|
|
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, TMP_REG1, 0, SLJIT_IMM, local_size >> 12);
|
|
|
|
EMIT_MOV(compiler, TMP_REG2, 0, SLJIT_MEM1(SLJIT_SP), -4096);
|
|
BINARY_IMM32(SUB, 4096, SLJIT_SP, 0);
|
|
BINARY_IMM32(SUB, 1, TMP_REG1, 0);
|
|
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
|
|
FAIL_IF(!inst);
|
|
|
|
INC_SIZE(2);
|
|
inst[0] = JNE_i8;
|
|
inst[1] = (sljit_u8)-21;
|
|
local_size &= 0xfff;
|
|
}
|
|
|
|
if (local_size > 0)
|
|
EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_MEM1(SLJIT_SP), -local_size);
|
|
}
|
|
#endif /* _WIN64 */
|
|
|
|
if (local_size > 0)
|
|
BINARY_IMM32(SUB, local_size, SLJIT_SP, 0);
|
|
|
|
#ifdef _WIN64
|
|
if (saved_float_regs_size > 0) {
|
|
compiler->mode32 = 1;
|
|
|
|
tmp = SLJIT_FS0 - fsaveds;
|
|
for (i = SLJIT_FS0; i > tmp; i--) {
|
|
FAIL_IF(emit_groupf(compiler, MOVAPS_xm_x | EX86_SSE2, i, SLJIT_MEM1(SLJIT_SP), saved_float_regs_offset));
|
|
saved_float_regs_offset += 16;
|
|
}
|
|
|
|
for (i = fscratches; i >= SLJIT_FIRST_SAVED_FLOAT_REG; i--) {
|
|
FAIL_IF(emit_groupf(compiler, MOVAPS_xm_x | EX86_SSE2, i, SLJIT_MEM1(SLJIT_SP), saved_float_regs_offset));
|
|
saved_float_regs_offset += 16;
|
|
}
|
|
}
|
|
#endif /* _WIN64 */
|
|
|
|
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 local_size)
|
|
{
|
|
sljit_s32 saved_regs_size;
|
|
#ifdef _WIN64
|
|
sljit_s32 fscratches;
|
|
sljit_s32 fsaveds;
|
|
sljit_s32 saved_float_regs_size;
|
|
#endif /* _WIN64 */
|
|
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_set_context(compiler, options, arg_types, scratches, saveds, local_size));
|
|
set_emit_enter(compiler, options, arg_types, scratches, saveds, local_size);
|
|
|
|
scratches = ENTER_GET_REGS(scratches);
|
|
|
|
#ifdef _WIN64
|
|
saveds = ENTER_GET_REGS(saveds);
|
|
fscratches = compiler->fscratches;
|
|
fsaveds = compiler->fsaveds;
|
|
|
|
local_size += SLJIT_LOCALS_OFFSET;
|
|
saved_float_regs_size = GET_SAVED_FLOAT_REGISTERS_SIZE(fscratches, fsaveds, sse2_reg);
|
|
|
|
if (saved_float_regs_size > 0)
|
|
local_size = ((local_size + 0xf) & ~0xf) + saved_float_regs_size;
|
|
#else /* !_WIN64 */
|
|
SLJIT_ASSERT(SLJIT_LOCALS_OFFSET == 0);
|
|
#endif /* _WIN64 */
|
|
|
|
/* Including the return address saved by the call instruction. */
|
|
saved_regs_size = GET_SAVED_REGISTERS_SIZE(scratches, saveds - SLJIT_KEPT_SAVEDS_COUNT(options), 1);
|
|
compiler->local_size = ((local_size + saved_regs_size + 0xf) & ~0xf) - saved_regs_size;
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
static sljit_s32 emit_stack_frame_release(struct sljit_compiler *compiler, sljit_s32 is_return_to)
|
|
{
|
|
sljit_uw size;
|
|
sljit_s32 local_size, i, tmp;
|
|
sljit_u8 *inst;
|
|
#ifdef _WIN64
|
|
sljit_s32 saved_float_regs_offset;
|
|
sljit_s32 fscratches = compiler->fscratches;
|
|
sljit_s32 fsaveds = compiler->fsaveds;
|
|
#endif /* _WIN64 */
|
|
|
|
#ifdef _WIN64
|
|
saved_float_regs_offset = GET_SAVED_FLOAT_REGISTERS_SIZE(fscratches, fsaveds, sse2_reg);
|
|
|
|
if (saved_float_regs_offset > 0) {
|
|
compiler->mode32 = 1;
|
|
saved_float_regs_offset = (compiler->local_size - saved_float_regs_offset) & ~0xf;
|
|
|
|
tmp = SLJIT_FS0 - fsaveds;
|
|
for (i = SLJIT_FS0; i > tmp; i--) {
|
|
FAIL_IF(emit_groupf(compiler, MOVAPS_x_xm | EX86_SSE2, i, SLJIT_MEM1(SLJIT_SP), saved_float_regs_offset));
|
|
saved_float_regs_offset += 16;
|
|
}
|
|
|
|
for (i = fscratches; i >= SLJIT_FIRST_SAVED_FLOAT_REG; i--) {
|
|
FAIL_IF(emit_groupf(compiler, MOVAPS_x_xm | EX86_SSE2, i, SLJIT_MEM1(SLJIT_SP), saved_float_regs_offset));
|
|
saved_float_regs_offset += 16;
|
|
}
|
|
|
|
compiler->mode32 = 0;
|
|
}
|
|
#endif /* _WIN64 */
|
|
|
|
local_size = compiler->local_size;
|
|
|
|
if (is_return_to && compiler->scratches < SLJIT_FIRST_SAVED_REG && (compiler->saveds == SLJIT_KEPT_SAVEDS_COUNT(compiler->options))) {
|
|
local_size += SSIZE_OF(sw);
|
|
is_return_to = 0;
|
|
}
|
|
|
|
if (local_size > 0)
|
|
BINARY_IMM32(ADD, local_size, SLJIT_SP, 0);
|
|
|
|
tmp = compiler->scratches;
|
|
for (i = SLJIT_FIRST_SAVED_REG; i <= tmp; i++) {
|
|
size = reg_map[i] >= 8 ? 2 : 1;
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(size);
|
|
if (reg_map[i] >= 8)
|
|
*inst++ = REX_B;
|
|
POP_REG(reg_lmap[i]);
|
|
}
|
|
|
|
tmp = SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options);
|
|
for (i = SLJIT_S0 + 1 - compiler->saveds; i <= tmp; i++) {
|
|
size = reg_map[i] >= 8 ? 2 : 1;
|
|
inst = (sljit_u8*)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 (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)
|
|
{
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_return_void(compiler));
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
FAIL_IF(emit_stack_frame_release(compiler, 0));
|
|
return emit_byte(compiler, RET_near);
|
|
}
|
|
|
|
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_return_to(struct sljit_compiler *compiler,
|
|
sljit_s32 src, sljit_sw srcw)
|
|
{
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_return_to(compiler, src, srcw));
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
if ((src & SLJIT_MEM) || (src >= SLJIT_FIRST_SAVED_REG && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options)))) {
|
|
ADJUST_LOCAL_OFFSET(src, srcw);
|
|
|
|
EMIT_MOV(compiler, TMP_REG2, 0, src, srcw);
|
|
src = TMP_REG2;
|
|
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 */
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
#ifndef _WIN64
|
|
|
|
static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src_ptr)
|
|
{
|
|
sljit_s32 src = src_ptr ? (*src_ptr) : 0;
|
|
sljit_s32 word_arg_count = 0;
|
|
|
|
SLJIT_ASSERT(reg_map[SLJIT_R1] == 6 && reg_map[SLJIT_R3] == 1 && reg_map[TMP_REG1] == 2);
|
|
SLJIT_ASSERT(!(src & SLJIT_MEM));
|
|
|
|
/* Remove return value. */
|
|
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 == 0)
|
|
return SLJIT_SUCCESS;
|
|
|
|
if (word_arg_count >= 3) {
|
|
if (src == SLJIT_R2)
|
|
*src_ptr = TMP_REG1;
|
|
EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_R2, 0);
|
|
}
|
|
|
|
return emit_mov(compiler, SLJIT_R2, 0, SLJIT_R0, 0);
|
|
}
|
|
|
|
#else
|
|
|
|
static sljit_s32 call_with_args(struct sljit_compiler *compiler, sljit_s32 arg_types, sljit_s32 *src_ptr)
|
|
{
|
|
sljit_s32 src = src_ptr ? (*src_ptr) : 0;
|
|
sljit_s32 arg_count = 0;
|
|
sljit_s32 word_arg_count = 0;
|
|
sljit_s32 float_arg_count = 0;
|
|
sljit_s32 types = 0;
|
|
sljit_s32 data_trandfer = 0;
|
|
static sljit_u8 word_arg_regs[5] = { 0, SLJIT_R3, SLJIT_R1, SLJIT_R2, TMP_REG1 };
|
|
|
|
SLJIT_ASSERT(reg_map[SLJIT_R3] == 1 && reg_map[SLJIT_R1] == 2 && reg_map[SLJIT_R2] == 8 && reg_map[TMP_REG1] == 9);
|
|
SLJIT_ASSERT(!(src & SLJIT_MEM));
|
|
|
|
arg_types >>= SLJIT_ARG_SHIFT;
|
|
|
|
while (arg_types) {
|
|
types = (types << SLJIT_ARG_SHIFT) | (arg_types & SLJIT_ARG_MASK);
|
|
|
|
switch (arg_types & SLJIT_ARG_MASK) {
|
|
case SLJIT_ARG_TYPE_F64:
|
|
case SLJIT_ARG_TYPE_F32:
|
|
arg_count++;
|
|
float_arg_count++;
|
|
|
|
if (arg_count != float_arg_count)
|
|
data_trandfer = 1;
|
|
break;
|
|
default:
|
|
arg_count++;
|
|
word_arg_count++;
|
|
|
|
if (arg_count != word_arg_count || arg_count != word_arg_regs[arg_count]) {
|
|
data_trandfer = 1;
|
|
|
|
if (src == word_arg_regs[arg_count]) {
|
|
EMIT_MOV(compiler, TMP_REG2, 0, src, 0);
|
|
*src_ptr = TMP_REG2;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
arg_types >>= SLJIT_ARG_SHIFT;
|
|
}
|
|
|
|
if (!data_trandfer)
|
|
return SLJIT_SUCCESS;
|
|
|
|
while (types) {
|
|
switch (types & SLJIT_ARG_MASK) {
|
|
case SLJIT_ARG_TYPE_F64:
|
|
if (arg_count != float_arg_count)
|
|
FAIL_IF(emit_sse2_load(compiler, 0, arg_count, float_arg_count, 0));
|
|
arg_count--;
|
|
float_arg_count--;
|
|
break;
|
|
case SLJIT_ARG_TYPE_F32:
|
|
if (arg_count != float_arg_count)
|
|
FAIL_IF(emit_sse2_load(compiler, 1, arg_count, float_arg_count, 0));
|
|
arg_count--;
|
|
float_arg_count--;
|
|
break;
|
|
default:
|
|
if (arg_count != word_arg_count || arg_count != word_arg_regs[arg_count])
|
|
EMIT_MOV(compiler, word_arg_regs[arg_count], 0, word_arg_count, 0);
|
|
arg_count--;
|
|
word_arg_count--;
|
|
break;
|
|
}
|
|
|
|
types >>= SLJIT_ARG_SHIFT;
|
|
}
|
|
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
#endif
|
|
|
|
SLJIT_API_FUNC_ATTRIBUTE struct sljit_jump* sljit_emit_call(struct sljit_compiler *compiler, sljit_s32 type,
|
|
sljit_s32 arg_types)
|
|
{
|
|
CHECK_ERROR_PTR();
|
|
CHECK_PTR(check_sljit_emit_call(compiler, type, arg_types));
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
if ((type & 0xff) != SLJIT_CALL_REG_ARG)
|
|
PTR_FAIL_IF(call_with_args(compiler, arg_types, NULL));
|
|
|
|
if (type & SLJIT_CALL_RETURN) {
|
|
PTR_FAIL_IF(emit_stack_frame_release(compiler, 0));
|
|
type = SLJIT_JUMP | (type & SLJIT_REWRITABLE_JUMP);
|
|
}
|
|
|
|
SLJIT_SKIP_CHECKS(compiler);
|
|
return sljit_emit_jump(compiler, type);
|
|
}
|
|
|
|
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_icall(struct sljit_compiler *compiler, sljit_s32 type,
|
|
sljit_s32 arg_types,
|
|
sljit_s32 src, sljit_sw srcw)
|
|
{
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_icall(compiler, type, arg_types, src, srcw));
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
if (src & SLJIT_MEM) {
|
|
ADJUST_LOCAL_OFFSET(src, srcw);
|
|
EMIT_MOV(compiler, TMP_REG2, 0, src, srcw);
|
|
src = TMP_REG2;
|
|
}
|
|
|
|
if (type & SLJIT_CALL_RETURN) {
|
|
if (src >= SLJIT_FIRST_SAVED_REG && src <= (SLJIT_S0 - SLJIT_KEPT_SAVEDS_COUNT(compiler->options))) {
|
|
EMIT_MOV(compiler, TMP_REG2, 0, src, srcw);
|
|
src = TMP_REG2;
|
|
}
|
|
|
|
FAIL_IF(emit_stack_frame_release(compiler, 0));
|
|
}
|
|
|
|
if ((type & 0xff) != SLJIT_CALL_REG_ARG)
|
|
FAIL_IF(call_with_args(compiler, arg_types, &src));
|
|
|
|
if (type & SLJIT_CALL_RETURN)
|
|
type = SLJIT_JUMP;
|
|
|
|
SLJIT_SKIP_CHECKS(compiler);
|
|
return sljit_emit_ijump(compiler, type, src, srcw);
|
|
}
|
|
|
|
static sljit_s32 emit_fast_enter(struct sljit_compiler *compiler, sljit_s32 dst, sljit_sw dstw)
|
|
{
|
|
sljit_u8 *inst;
|
|
|
|
if (FAST_IS_REG(dst)) {
|
|
if (reg_map[dst] < 8)
|
|
return emit_byte(compiler, U8(POP_r + reg_lmap[dst]));
|
|
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(2);
|
|
*inst++ = REX_B;
|
|
POP_REG(reg_lmap[dst]);
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
/* REX_W is not necessary (src is not immediate). */
|
|
compiler->mode32 = 1;
|
|
inst = emit_x86_instruction(compiler, 1, 0, 0, dst, dstw);
|
|
FAIL_IF(!inst);
|
|
*inst = POP_rm;
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
static sljit_s32 emit_fast_return(struct sljit_compiler *compiler, sljit_s32 src, sljit_sw srcw)
|
|
{
|
|
sljit_u8 *inst;
|
|
|
|
if (FAST_IS_REG(src)) {
|
|
if (reg_map[src] < 8) {
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + 1 + 1);
|
|
FAIL_IF(!inst);
|
|
|
|
INC_SIZE(1 + 1);
|
|
PUSH_REG(reg_lmap[src]);
|
|
}
|
|
else {
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + 2 + 1);
|
|
FAIL_IF(!inst);
|
|
|
|
INC_SIZE(2 + 1);
|
|
*inst++ = REX_B;
|
|
PUSH_REG(reg_lmap[src]);
|
|
}
|
|
}
|
|
else {
|
|
/* REX_W is not necessary (src is not immediate). */
|
|
compiler->mode32 = 1;
|
|
inst = emit_x86_instruction(compiler, 1, 0, 0, src, srcw);
|
|
FAIL_IF(!inst);
|
|
inst[0] = GROUP_FF;
|
|
inst[1] |= PUSH_rm;
|
|
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + 1);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(1);
|
|
}
|
|
|
|
RET();
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
static sljit_s32 sljit_emit_get_return_address(struct sljit_compiler *compiler,
|
|
sljit_s32 dst, sljit_sw dstw)
|
|
{
|
|
sljit_s32 saved_regs_size;
|
|
|
|
compiler->mode32 = 0;
|
|
saved_regs_size = GET_SAVED_REGISTERS_SIZE(compiler->scratches, compiler->saveds - SLJIT_KEPT_SAVEDS_COUNT(compiler->options), 0);
|
|
return emit_mov(compiler, dst, dstw, SLJIT_MEM1(SLJIT_SP), compiler->local_size + saved_regs_size);
|
|
}
|
|
|
|
/* --------------------------------------------------------------------- */
|
|
/* Other operations */
|
|
/* --------------------------------------------------------------------- */
|
|
|
|
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_select(struct sljit_compiler *compiler, sljit_s32 type,
|
|
sljit_s32 dst_reg,
|
|
sljit_s32 src1, sljit_sw src1w,
|
|
sljit_s32 src2_reg)
|
|
{
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_select(compiler, type, dst_reg, src1, src1w, src2_reg));
|
|
|
|
ADJUST_LOCAL_OFFSET(src1, src1w);
|
|
|
|
compiler->mode32 = type & SLJIT_32;
|
|
type &= ~SLJIT_32;
|
|
|
|
if (dst_reg != src2_reg) {
|
|
if (dst_reg == src1) {
|
|
src1 = src2_reg;
|
|
src1w = 0;
|
|
type ^= 0x1;
|
|
} else if (ADDRESSING_DEPENDS_ON(src1, dst_reg)) {
|
|
EMIT_MOV(compiler, dst_reg, 0, src1, src1w);
|
|
src1 = src2_reg;
|
|
src1w = 0;
|
|
type ^= 0x1;
|
|
} else
|
|
EMIT_MOV(compiler, dst_reg, 0, src2_reg, 0);
|
|
}
|
|
|
|
if (sljit_has_cpu_feature(SLJIT_HAS_CMOV)) {
|
|
if (SLJIT_UNLIKELY(src1 == SLJIT_IMM)) {
|
|
EMIT_MOV(compiler, TMP_REG2, 0, src1, src1w);
|
|
src1 = TMP_REG2;
|
|
src1w = 0;
|
|
}
|
|
|
|
return emit_groupf(compiler, U8(get_jump_code((sljit_uw)type) - 0x40), dst_reg, src1, src1w);
|
|
}
|
|
|
|
return emit_cmov_generic(compiler, type, dst_reg, src1, src1w);
|
|
}
|
|
|
|
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;
|
|
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);
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
if ((mem & REG_MASK) == 0) {
|
|
EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, memw);
|
|
|
|
mem = SLJIT_MEM1(TMP_REG1);
|
|
memw = 0;
|
|
} else if (!(mem & OFFS_REG_MASK) && ((memw < HALFWORD_MIN) || (memw > HALFWORD_MAX - SSIZE_OF(sw)))) {
|
|
EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, memw);
|
|
|
|
mem = SLJIT_MEM2(mem & REG_MASK, TMP_REG1);
|
|
memw = 0;
|
|
}
|
|
|
|
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)) {
|
|
/* Base and offset cannot be TMP_REG1. */
|
|
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];
|
|
|
|
if ((mem & OFFS_REG_MASK) && (reg_idx == 1)) {
|
|
inst = (sljit_u8*)ensure_buf(compiler, (sljit_uw)(1 + 5));
|
|
FAIL_IF(!inst);
|
|
|
|
INC_SIZE(5);
|
|
|
|
inst[0] = U8(REX_W | ((reg_map[reg] >= 8) ? REX_R : 0) | ((reg_map[mem & REG_MASK] >= 8) ? REX_B : 0) | ((reg_map[OFFS_REG(mem)] >= 8) ? REX_X : 0));
|
|
inst[1] = (type & SLJIT_MEM_STORE) ? MOV_rm_r : MOV_r_rm;
|
|
inst[2] = 0x44 | U8(reg_lmap[reg] << 3);
|
|
inst[3] = U8(memw << 6) | U8(reg_lmap[OFFS_REG(mem)] << 3) | reg_lmap[mem & REG_MASK];
|
|
inst[4] = 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;
|
|
}
|
|
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
static sljit_s32 emit_mov_int(struct sljit_compiler *compiler, sljit_s32 sign,
|
|
sljit_s32 dst, sljit_sw dstw,
|
|
sljit_s32 src, sljit_sw srcw)
|
|
{
|
|
sljit_u8* inst;
|
|
sljit_s32 dst_r;
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
if (src == SLJIT_IMM) {
|
|
if (FAST_IS_REG(dst)) {
|
|
if (!sign || ((sljit_u32)srcw <= 0x7fffffff))
|
|
return emit_do_imm32(compiler, reg_map[dst] <= 7 ? 0 : REX_B, U8(MOV_r_i32 | reg_lmap[dst]), srcw);
|
|
|
|
inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, (sljit_sw)(sljit_s32)srcw, dst, dstw);
|
|
FAIL_IF(!inst);
|
|
*inst = MOV_rm_i32;
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
compiler->mode32 = 1;
|
|
inst = emit_x86_instruction(compiler, 1, SLJIT_IMM, (sljit_sw)(sljit_s32)srcw, dst, dstw);
|
|
FAIL_IF(!inst);
|
|
*inst = MOV_rm_i32;
|
|
compiler->mode32 = 0;
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
dst_r = FAST_IS_REG(dst) ? dst : TMP_REG1;
|
|
|
|
if ((dst & SLJIT_MEM) && FAST_IS_REG(src))
|
|
dst_r = src;
|
|
else {
|
|
if (sign) {
|
|
inst = emit_x86_instruction(compiler, 1, dst_r, 0, src, srcw);
|
|
FAIL_IF(!inst);
|
|
*inst = MOVSXD_r_rm;
|
|
} else {
|
|
compiler->mode32 = 1;
|
|
EMIT_MOV(compiler, dst_r, 0, src, srcw);
|
|
compiler->mode32 = 0;
|
|
}
|
|
}
|
|
|
|
if (dst & SLJIT_MEM) {
|
|
compiler->mode32 = 1;
|
|
inst = emit_x86_instruction(compiler, 1, dst_r, 0, dst, dstw);
|
|
FAIL_IF(!inst);
|
|
*inst = MOV_rm_r;
|
|
compiler->mode32 = 0;
|
|
}
|
|
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
static SLJIT_INLINE sljit_s32 sljit_emit_fop1_conv_f64_from_uw(struct sljit_compiler *compiler, sljit_s32 op,
|
|
sljit_s32 dst, sljit_sw dstw,
|
|
sljit_s32 src, sljit_sw srcw)
|
|
{
|
|
sljit_s32 dst_r = FAST_IS_REG(dst) ? dst : TMP_FREG;
|
|
sljit_u8 *inst, *jump_inst1, *jump_inst2;
|
|
sljit_uw size1, size2;
|
|
|
|
compiler->mode32 = 0;
|
|
|
|
if (GET_OPCODE(op) == SLJIT_CONV_F64_FROM_U32) {
|
|
if (src != SLJIT_IMM) {
|
|
compiler->mode32 = 1;
|
|
EMIT_MOV(compiler, TMP_REG1, 0, src, srcw);
|
|
compiler->mode32 = 0;
|
|
} else
|
|
FAIL_IF(emit_do_imm32(compiler, reg_map[TMP_REG1] <= 7 ? 0 : REX_B, U8(MOV_r_i32 | reg_lmap[TMP_REG1]), srcw));
|
|
|
|
FAIL_IF(emit_groupf(compiler, CVTSI2SD_x_rm | EX86_SELECT_F2_F3(op) | EX86_SSE2_OP1, dst_r, TMP_REG1, 0));
|
|
|
|
compiler->mode32 = 1;
|
|
|
|
if (dst_r == TMP_FREG)
|
|
return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, TMP_FREG);
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
if (!FAST_IS_REG(src)) {
|
|
EMIT_MOV(compiler, TMP_REG1, 0, src, srcw);
|
|
src = TMP_REG1;
|
|
}
|
|
|
|
BINARY_IMM32(CMP, 0, src, 0);
|
|
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(2);
|
|
inst[0] = JL_i8;
|
|
jump_inst1 = inst;
|
|
|
|
size1 = compiler->size;
|
|
|
|
compiler->mode32 = 0;
|
|
FAIL_IF(emit_groupf(compiler, CVTSI2SD_x_rm | EX86_SELECT_F2_F3(op) | EX86_SSE2_OP1, dst_r, src, 0));
|
|
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + 2);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(2);
|
|
inst[0] = JMP_i8;
|
|
jump_inst2 = inst;
|
|
|
|
size2 = compiler->size;
|
|
|
|
jump_inst1[1] = U8(size2 - size1);
|
|
|
|
if (src != TMP_REG1)
|
|
EMIT_MOV(compiler, TMP_REG1, 0, src, 0);
|
|
|
|
EMIT_MOV(compiler, TMP_REG2, 0, src, 0);
|
|
|
|
inst = emit_x86_instruction(compiler, 1 | EX86_SHIFT_INS, SLJIT_IMM, 1, TMP_REG1, 0);
|
|
FAIL_IF(!inst);
|
|
inst[1] |= SHR;
|
|
|
|
compiler->mode32 = 1;
|
|
BINARY_IMM32(AND, 1, TMP_REG2, 0);
|
|
|
|
compiler->mode32 = 0;
|
|
inst = emit_x86_instruction(compiler, 1, TMP_REG1, 0, TMP_REG2, 0);
|
|
FAIL_IF(!inst);
|
|
inst[0] = OR_r_rm;
|
|
|
|
FAIL_IF(emit_groupf(compiler, CVTSI2SD_x_rm | EX86_SELECT_F2_F3(op) | EX86_SSE2_OP1, dst_r, TMP_REG1, 0));
|
|
compiler->mode32 = 1;
|
|
FAIL_IF(emit_groupf(compiler, ADDSD_x_xm | EX86_SELECT_F2_F3(op) | EX86_SSE2, dst_r, dst_r, 0));
|
|
|
|
jump_inst2[1] = U8(compiler->size - size2);
|
|
|
|
if (dst_r == TMP_FREG)
|
|
return emit_sse2_store(compiler, op & SLJIT_32, dst, dstw, TMP_FREG);
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
static sljit_s32 sljit_emit_fset(struct sljit_compiler *compiler,
|
|
sljit_s32 freg, sljit_u8 rex, sljit_s32 is_zero)
|
|
{
|
|
sljit_u8 *inst;
|
|
sljit_u32 size;
|
|
|
|
if (is_zero) {
|
|
rex = freg_map[freg] >= 8 ? (REX_R | REX_B) : 0;
|
|
} else {
|
|
if (freg_map[freg] >= 8)
|
|
rex |= REX_R;
|
|
if (reg_map[TMP_REG1] >= 8)
|
|
rex |= REX_B;
|
|
}
|
|
|
|
size = (rex != 0) ? 5 : 4;
|
|
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(size);
|
|
|
|
*inst++ = GROUP_66;
|
|
if (rex != 0)
|
|
*inst++ = rex;
|
|
inst[0] = GROUP_0F;
|
|
|
|
if (is_zero) {
|
|
inst[1] = PXOR_x_xm;
|
|
inst[2] = U8(freg_lmap[freg] | (freg_lmap[freg] << 3) | MOD_REG);
|
|
} else {
|
|
inst[1] = MOVD_x_rm;
|
|
inst[2] = U8(reg_lmap[TMP_REG1] | (freg_lmap[freg] << 3) | MOD_REG);
|
|
}
|
|
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fset32(struct sljit_compiler *compiler,
|
|
sljit_s32 freg, sljit_f32 value)
|
|
{
|
|
union {
|
|
sljit_s32 imm;
|
|
sljit_f32 value;
|
|
} u;
|
|
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_fset32(compiler, freg, value));
|
|
|
|
u.value = value;
|
|
|
|
if (u.imm != 0) {
|
|
compiler->mode32 = 1;
|
|
EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, u.imm);
|
|
}
|
|
|
|
return sljit_emit_fset(compiler, freg, 0, u.imm == 0);
|
|
}
|
|
|
|
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fset64(struct sljit_compiler *compiler,
|
|
sljit_s32 freg, sljit_f64 value)
|
|
{
|
|
union {
|
|
sljit_sw imm;
|
|
sljit_f64 value;
|
|
} u;
|
|
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_fset64(compiler, freg, value));
|
|
|
|
u.value = value;
|
|
|
|
if (u.imm != 0) {
|
|
compiler->mode32 = 0;
|
|
EMIT_MOV(compiler, TMP_REG1, 0, SLJIT_IMM, u.imm);
|
|
}
|
|
|
|
return sljit_emit_fset(compiler, freg, REX_W, u.imm == 0);
|
|
}
|
|
|
|
SLJIT_API_FUNC_ATTRIBUTE sljit_s32 sljit_emit_fcopy(struct sljit_compiler *compiler, sljit_s32 op,
|
|
sljit_s32 freg, sljit_s32 reg)
|
|
{
|
|
sljit_u8 *inst;
|
|
sljit_u32 size;
|
|
sljit_u8 rex = 0;
|
|
|
|
CHECK_ERROR();
|
|
CHECK(check_sljit_emit_fcopy(compiler, op, freg, reg));
|
|
|
|
if (!(op & SLJIT_32))
|
|
rex = REX_W;
|
|
|
|
if (freg_map[freg] >= 8)
|
|
rex |= REX_R;
|
|
|
|
if (reg_map[reg] >= 8)
|
|
rex |= REX_B;
|
|
|
|
size = (rex != 0) ? 5 : 4;
|
|
|
|
inst = (sljit_u8*)ensure_buf(compiler, 1 + size);
|
|
FAIL_IF(!inst);
|
|
INC_SIZE(size);
|
|
|
|
*inst++ = GROUP_66;
|
|
if (rex != 0)
|
|
*inst++ = rex;
|
|
inst[0] = GROUP_0F;
|
|
inst[1] = GET_OPCODE(op) == SLJIT_COPY_TO_F64 ? MOVD_x_rm : MOVD_rm_x;
|
|
inst[2] = U8(reg_lmap[reg] | (freg_lmap[freg] << 3) | MOD_REG);
|
|
|
|
return SLJIT_SUCCESS;
|
|
}
|
|
|
|
static sljit_s32 skip_frames_before_return(struct sljit_compiler *compiler)
|
|
{
|
|
sljit_s32 tmp, size;
|
|
|
|
/* Don't adjust shadow stack if it isn't enabled. */
|
|
if (!cpu_has_shadow_stack())
|
|
return SLJIT_SUCCESS;
|
|
|
|
size = compiler->local_size;
|
|
tmp = compiler->scratches;
|
|
if (tmp >= SLJIT_FIRST_SAVED_REG)
|
|
size += (tmp - SLJIT_FIRST_SAVED_REG + 1) * SSIZE_OF(sw);
|
|
tmp = compiler->saveds < SLJIT_NUMBER_OF_SAVED_REGISTERS ? (SLJIT_S0 + 1 - compiler->saveds) : SLJIT_FIRST_SAVED_REG;
|
|
if (SLJIT_S0 >= tmp)
|
|
size += (SLJIT_S0 - tmp + 1) * SSIZE_OF(sw);
|
|
|
|
return adjust_shadow_stack(compiler, SLJIT_MEM1(SLJIT_SP), size);
|
|
}
|