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XEmitter: overload MOVBE()

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This commit is contained in:
Tillmann Karras
2015-01-13 22:31:21 +01:00
parent 20ded4c1e5
commit eb13aa43fe
4 changed files with 22 additions and 33 deletions
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33
Source/Core/Common/x64Emitter.cpp
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@ -870,38 +870,25 @@ void XEmitter::MOVZX(int dbits, int sbits, X64Reg dest, OpArg src)
src.WriteRest(this);
}
void XEmitter::MOVBE(int bits, const OpArg& dest, const OpArg& src)
void XEmitter::WriteMOVBE(int bits, u8 op, X64Reg reg, OpArg arg)
{
_assert_msg_(DYNA_REC, cpu_info.bMOVBE, "Generating MOVBE on a system that does not support it.");
if (bits == 8)
{
MOV(bits, dest, src);
MOV(8, op & 1 ? arg : R(reg), op & 1 ? R(reg) : arg);
return;
}
if (bits == 16)
Write8(0x66);
if (dest.IsSimpleReg())
{
_assert_msg_(DYNA_REC, !src.IsSimpleReg() && !src.IsImm(), "MOVBE: Loading from !mem");
src.WriteRex(this, bits, bits, dest.GetSimpleReg());
Write8(0x0F); Write8(0x38); Write8(0xF0);
src.WriteRest(this, 0, dest.GetSimpleReg());
}
else if (src.IsSimpleReg())
{
_assert_msg_(DYNA_REC, !dest.IsSimpleReg() && !dest.IsImm(), "MOVBE: Storing to !mem");
dest.WriteRex(this, bits, bits, src.GetSimpleReg());
Write8(0x0F); Write8(0x38); Write8(0xF1);
dest.WriteRest(this, 0, src.GetSimpleReg());
}
else
{
_assert_msg_(DYNA_REC, 0, "MOVBE: Not loading or storing to mem");
}
_assert_msg_(DYNA_REC, !arg.IsSimpleReg() && !arg.IsImm(), "MOVBE: need r<-m or m<-r!");
arg.WriteRex(this, bits, bits, reg);
Write8(0x0F);
Write8(0x38);
Write8(op);
arg.WriteRest(this, 0, reg);
}
void XEmitter::MOVBE(int bits, X64Reg dest, const OpArg& src) {WriteMOVBE(bits, 0xF0, dest, src);}
void XEmitter::MOVBE(int bits, const OpArg& dest, X64Reg src) {WriteMOVBE(bits, 0xF1, src, dest);}
void XEmitter::LEA(int bits, X64Reg dest, OpArg src)
{