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Fix FCHS recompiling for x64 dynarecs

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This commit is contained in:
Cacodemon345
2025-07-20 18:05:23 +06:00
parent 3abb8000bc
commit a633bb40df
2 changed files with 22 additions and 9 deletions
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24
src/codegen/codegen_ops_x86-64.h
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@@ -3875,19 +3875,31 @@ FP_LOAD_IMM_Q(uint64_t v)
static __inline void
FP_FCHS(void)
{
addbyte(0x48); /* MOVABS RAX, 0x8000000000000000 */
addbyte(0xb8);
addquad(0x8000000000000000);
addbyte(0x66); /* MOVQ XMM15, RAX */
addbyte(0x4c);
addbyte(0x0f);
addbyte(0x6e);
addbyte(0xf8);
addbyte(0x48); /* XOR RAX, RAX */
addbyte(0x31);
addbyte(0xc0);
addbyte(0x8b); /*MOV EAX, TOP*/
addbyte(0x45);
addbyte((uint8_t) cpu_state_offset(TOP));
addbyte(0xf2); /*SUBSD XMM0, XMM0*/
addbyte(0xf3); /*MOVQ XMM0, ST[EAX*8]*/
addbyte(0x0f);
addbyte(0x5c);
addbyte(0xc0);
addbyte(0xf2); /*SUBSD XMM0, ST[EAX*8]*/
addbyte(0x0f);
addbyte(0x5c);
addbyte(0x7e);
addbyte(0x44);
addbyte(0xc5);
addbyte((uint8_t) cpu_state_offset(ST));
addbyte(0x66); /* PXOR XMM0, XMM15 */
addbyte(0x41);
addbyte(0x0F);
addbyte(0xEF);
addbyte(0xC7);
addbyte(0x80); /*AND tag[EAX], ~TAG_UINT64*/
addbyte(0x64);
addbyte(0x05);

7
src/codegen_new/codegen_backend_x86-64_uops.c
View File

@@ -636,9 +636,10 @@ codegen_FCHS(codeblock_t *block, uop_t *uop)
int src_size_a = IREG_GET_SIZE(uop->src_reg_a_real);
if (REG_IS_D(dest_size) && REG_IS_D(src_size_a)) {
host_x86_MOVQ_XREG_XREG(block, REG_XMM_TEMP, src_reg_a);
host_x86_PXOR_XREG_XREG(block, dest_reg, dest_reg);
host_x86_SUBSD_XREG_XREG(block, dest_reg, REG_XMM_TEMP);
host_x86_MOVQ_XREG_XREG(block, dest_reg, src_reg_a);
host_x86_MOV64_REG_IMM(block, REG_RCX, 0x8000000000000000);
host_x86_MOVQ_XREG_REG(block, REG_XMM_TEMP, REG_RCX);
host_x86_PXOR_XREG_XREG(block, dest_reg, REG_XMM_TEMP);
}
# ifdef RECOMPILER_DEBUG
else