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x86jit: Implement wsbh/wsbw.

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Unknown W. Brackets 2013-11-10 10:17:43 -08:00
parent 9bec82873c
commit 3a8f0598c4
1 changed files with 17 additions and 3 deletions
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20
Core/MIPS/x86/CompALU.cpp
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@ -782,19 +782,33 @@ namespace MIPSComp
if (rd == MIPS_REG_ZERO)
return;
DISABLE;
switch (op & 0x3ff)
{
case 0xA0: //wsbh
if (gpr.IsImmediate(rt)) {
u32 rtImm = gpr.GetImmediate32(rt);
gpr.SetImmediate32(rd, ((rtImm & 0xFF00FF00) >> 8) | ((rtImm & 0x00FF00FF) << 8));
break;
}
gpr.Lock(rd, rt);
gpr.MapReg(rd, rd == rt, true);
// Stub
if (rd != rt)
MOV(32, gpr.R(rd), gpr.R(rt));
// Swap both 16-bit halfwords by rotating afterward.
BSWAP(32, gpr.RX(rd));
ROR(32, gpr.R(rd), Imm8(16));
gpr.UnlockAll();
break;
case 0xE0: //wsbw
if (gpr.IsImmediate(rt)) {
gpr.SetImmediate32(rd, swap32(gpr.GetImmediate32(rt)));
break;
}
gpr.Lock(rd, rt);
gpr.MapReg(rd, rd == rt, true);
// Stub
if (rd != rt)
MOV(32, gpr.R(rd), gpr.R(rt));
BSWAP(32, gpr.RX(rd));
gpr.UnlockAll();
break;
default: