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Rewrote recompiler implementation of NEG.

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This commit is contained in:
TomW 2015-08-08 16:05:05 +01:00
commit f75a24f539
3 changed files with 73 additions and 20 deletions
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44
src/codegen_ops_x86-64.h
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@ -217,7 +217,7 @@ static int LOAD_REG_L(int reg)
int host_reg = reg;
// host_reg_mapping[host_reg] = reg;
if (!codegen_reg_loaded[reg & 7])// || CS != 0x1ac7 || pc < 0x1340 || pc >= 0x1354)
if (!codegen_reg_loaded[reg & 7])
{
addbyte(0x44); /*MOVZX W[reg],host_reg*/
addbyte(0x8b);
@ -234,7 +234,7 @@ static int LOAD_REG_IMM(uint32_t imm)
{
int host_reg = REG_EBX;
addbyte(0xbb); /*MOVL EBX, imm*/
addbyte(0xb8 | REG_EBX); /*MOVL EBX, imm*/
addlong(imm);
return host_reg;
@ -3239,6 +3239,46 @@ static void SAR_L_IMM(int reg, int count)
addbyte(count);
}
static void NEG_HOST_REG_B(int reg)
{
if (reg & 0x10)
{
if (reg & 8)
addbyte(0x44);
addbyte(0x89); /*MOV BX, reg*/
addbyte(0xc3 | ((reg & 7) << 3));
addbyte(0xf6); /*NEG BH*/
addbyte(0xdf);
if (reg & 8)
addbyte(0x41);
addbyte(0x89); /*MOV reg, BX*/
addbyte(0xd8 | (reg & 7));
}
else
{
if (reg & 8)
addbyte(0x41);
addbyte(0xf6);
addbyte(0xd8 | (reg & 7));
}
}
static void NEG_HOST_REG_W(int reg)
{
addbyte(0x66);
if (reg & 8)
addbyte(0x41);
addbyte(0xf7);
addbyte(0xd8 | (reg & 7));
}
static void NEG_HOST_REG_L(int reg)
{
if (reg & 8)
addbyte(0x41);
addbyte(0xf7);
addbyte(0xd8 | (reg & 7));
}
static void FP_ENTER()
{
if (codegen_fpu_entered)