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Lazy flags code now handles carry flag.

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This commit is contained in:
TomW 2015-02-02 19:54:01 +00:00
commit ea5e96569d
8 changed files with 147 additions and 189 deletions
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25
src/codegen_ops_x86.h
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@ -279,27 +279,8 @@ static void XOR_HOST_REG_IMM(int host_reg, uint32_t imm)
addlong(imm);
}
static void FLAG_C_CLEAR()
static void CALL_FUNC(void *dest)
{
addbyte(0x83); /*ANDL [flags],~1*/
addbyte(0x25);
addlong((uint32_t)&flags);
addbyte(0xfe);
}
static void FLAG_C_COPY()
{
addbyte(0x8a); /*MOVB DL, [flags]*/
addbyte(0x05 | (REG_DL << 3));
addlong((uint32_t)&flags);
addbyte(0x0f); /*SETB DH*/
addbyte(0x92);
addbyte(0xc0 | REG_DH);
addbyte(0x80); /*AND DL, ~1*/
addbyte(0xe0 | REG_DL);
addbyte(0xfe);
addbyte(0x08); /*OR DL, DH*/
addbyte(0xc0 | REG_DL | (REG_DH << 3));
addbyte(0x88); /*MOVB [flags],DL*/
addbyte(0x05 | (REG_DL << 3));
addlong((uint32_t)&flags);
addbyte(0xE8); /*CALL*/
addlong(((uint8_t *)dest - (uint8_t *)(&codeblock[block_current].data[block_pos + 4])));
}