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Added emitters for BT/BTR/BTS/BTC x86 instructions, optimized extended arithmetic PowerPC instructions

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This commit is contained in:
calc84maniac
2012-01-05 22:36:27 -05:00
parent a7a6a1859e
commit 5a15d58964
4 changed files with 111 additions and 43 deletions
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33
Source/Core/Common/Src/x64Emitter.cpp
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@ -834,6 +834,39 @@ void XEmitter::SHL(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, sh
void XEmitter::SHR(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 5);}
void XEmitter::SAR(int bits, OpArg dest, OpArg shift) {WriteShift(bits, dest, shift, 7);}
// index can be either imm8 or register, don't use memory destination because it's slow
void XEmitter::WriteBitTest(int bits, OpArg &dest, OpArg &index, int ext)
{
if (dest.IsImm())
{
_assert_msg_(DYNA_REC, 0, "WriteBitTest - can't test imms");
}
if ((index.IsImm() && index.GetImmBits() != 8))
{
_assert_msg_(DYNA_REC, 0, "WriteBitTest - illegal argument");
}
if (bits == 16) Write8(0x66);
if (index.IsImm())
{
dest.WriteRex(this, bits, bits);
Write8(0x0F); Write8(0xBA);
dest.WriteRest(this, 1, (X64Reg)ext);
Write8((u8)index.offset);
}
else
{
X64Reg operand = index.GetSimpleReg();
dest.WriteRex(this, bits, bits, operand);
Write8(0x0F); Write8(0x83 + 8*ext);
dest.WriteRest(this, 1, operand);
}
}
void XEmitter::BT(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 4);}
void XEmitter::BTS(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 5);}
void XEmitter::BTR(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 6);}
void XEmitter::BTC(int bits, OpArg dest, OpArg index) {WriteBitTest(bits, dest, index, 7);}
void OpArg::WriteSingleByteOp(XEmitter *emit, u8 op, X64Reg _operandReg, int bits)
{
if (bits == 16)

7
Source/Core/Common/Src/x64Emitter.h
View File

@ -249,6 +249,7 @@ private:
void WriteMulDivType(int bits, OpArg src, int ext);
void WriteBitSearchType(int bits, X64Reg dest, OpArg src, u8 byte2);
void WriteShift(int bits, OpArg dest, OpArg &shift, int ext);
void WriteBitTest(int bits, OpArg &dest, OpArg &index, int ext);
void WriteMXCSR(OpArg arg, int ext);
void WriteSSEOp(int size, u8 sseOp, bool packed, X64Reg regOp, OpArg arg, int extrabytes = 0);
void WriteNormalOp(XEmitter *emit, int bits, NormalOp op, const OpArg &a1, const OpArg &a2);
@ -374,6 +375,12 @@ public:
void SHR(int bits, OpArg dest, OpArg shift);
void SAR(int bits, OpArg dest, OpArg shift);
// Bit Test
void BT(int bits, OpArg dest, OpArg index);
void BTS(int bits, OpArg dest, OpArg index);
void BTR(int bits, OpArg dest, OpArg index);
void BTC(int bits, OpArg dest, OpArg index);
// Extend EAX into EDX in various ways
void CWD(int bits = 16);
inline void CDQ() {CWD(32);}