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OpcodeDispatcher: use carry increment for ADC

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
This commit is contained in:
Alyssa Rosenzweig 2024-08-10 12:54:47 -04:00
parent 832edd4da3
commit 8eac3198b6
1 changed files with 2 additions and 4 deletions
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6
FEXCore/Source/Interface/Core/OpcodeDispatcher/Flags.cpp
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@ -283,10 +283,8 @@ Ref OpDispatchBuilder::CalculateFlags_ADC(uint8_t SrcSize, Ref Src1, Ref Src2) {
CalculateAF(Src1, Src2);
// Adds are the same across x86, so rectify to uninverted carry.
RectifyCarryInvert(false);
if (SrcSize >= 4) {
RectifyCarryInvert(false);
HandleNZCV_RMW();
Res = _AdcWithFlags(OpSize, Src1, Src2);
CFInverted = false;
@ -296,7 +294,7 @@ Ref OpDispatchBuilder::CalculateFlags_ADC(uint8_t SrcSize, Ref Src1, Ref Src2) {
// Note that we do not extend Src2PlusCF, since we depend on proper
// 32-bit arithmetic to correctly handle the Src2 = 0xffff case.
Ref Src2PlusCF = _Adc(OpSize, _Constant(0), Src2);
Ref Src2PlusCF = IncrementByCarry(OpSize, Src2);
// Need to zero-extend for the comparison.
Res = _Add(OpSize, Src1, Src2PlusCF);