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Fixed issue with recompiled FCOMPP where the incorrect number of registers could be popped.

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This commit is contained in:
SarahW 2016-12-10 18:44:45 +00:00
commit 3a72cc9593
3 changed files with 57 additions and 2 deletions
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3
src/codegen_ops_fpu.h
View file

@ -481,8 +481,7 @@ static uint32_t ropFCOMPP(uint8_t opcode, uint32_t fetchdat, uint32_t op_32, uin
{
FP_ENTER();
FP_COMPARE_REG(0, 1);
FP_POP();
FP_POP();
FP_POP2();
return op_pc;
}

20
src/codegen_ops_x86-64.h
View file

@ -3908,6 +3908,26 @@ static void FP_POP()
addbyte(0x45);
addbyte(cpu_state_offset(TOP));
}
static void FP_POP2()
{
addbyte(0x8b); /*MOV EAX, [TOP]*/
addbyte(0x45);
addbyte(cpu_state_offset(TOP));
addbyte(0xc6); /*MOVB tag[EAX], 3*/
addbyte(0x44);
addbyte(0x05);
addbyte(cpu_state_offset(tag));
addbyte(3);
addbyte(0x83); /*ADD AL, 2*/
addbyte(0xc0);
addbyte(2);
addbyte(0x83); /*AND AL, 7*/
addbyte(0xe0);
addbyte(7);
addbyte(0x89); /*MOV [TOP], EAX*/
addbyte(0x45);
addbyte(cpu_state_offset(TOP));
}
static void FP_LOAD_S()
{

36
src/codegen_ops_x86.h
View file

@ -2503,6 +2503,42 @@ static void FP_POP()
addbyte(cpu_state_offset(TOP));
}
}
static void FP_POP2()
{
if (codeblock[block_current].flags & CODEBLOCK_STATIC_TOP)
{
addbyte(0xc6); /*MOVB tag[0][EBP], 3*/
addbyte(0x45);
addbyte(cpu_state_offset(tag[cpu_state.TOP]));
addbyte(3);
addbyte(0xc6); /*MOVB tag[1][EBP], 3*/
addbyte(0x45);
addbyte(cpu_state_offset(tag[(cpu_state.TOP+1)&7]));
addbyte(3);
addbyte(0xc6); /*MOVB TOP[EBP], (TOP+2) & 7*/
addbyte(0x45);
addbyte(cpu_state_offset(TOP));
addbyte((cpu_state.TOP + 2) & 7);
}
else
{
addbyte(0x8b); /*MOV EAX, TOP*/
addbyte(0x45);
addbyte(cpu_state_offset(TOP));
addbyte(0xc6); /*MOVB tag[EAX], 3*/
addbyte(0x44);
addbyte(0x05);
addbyte(cpu_state_offset(tag[0]));
addbyte(3);
addbyte(0x04); /*ADD AL, 2*/
addbyte(2);
addbyte(0x24); /*AND AL, 7*/
addbyte(7);
addbyte(0x88); /*MOV TOP, AL*/
addbyte(0x45);
addbyte(cpu_state_offset(TOP));
}
}
#define FPU_ADD 0x00
#define FPU_DIV 0x30