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OpcodeDispatcher: allow upper garbage on STOS

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Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
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Alyssa Rosenzweig 2024-03-11 18:47:27 -04:00
parent 03c6abdad4
commit 7629007cfa
1 changed files with 2 additions and 1 deletions
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FEXCore/Source/Interface/Core/OpcodeDispatcher.cpp
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@ -3627,7 +3627,8 @@ void OpDispatchBuilder::STOSOp(OpcodeArgs) {
const bool Repeat = (Op->Flags & (FEXCore::X86Tables::DecodeFlags::FLAG_REP_PREFIX | FEXCore::X86Tables::DecodeFlags::FLAG_REPNE_PREFIX)) != 0; const bool Repeat = (Op->Flags & (FEXCore::X86Tables::DecodeFlags::FLAG_REP_PREFIX | FEXCore::X86Tables::DecodeFlags::FLAG_REPNE_PREFIX)) != 0;
if (!Repeat) { if (!Repeat) {
OrderedNode *Src = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags); // Src is used only for a store of the same size so allow garbage
OrderedNode *Src = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags, {.AllowUpperGarbage = true});
OrderedNode *Dest = LoadGPRRegister(X86State::REG_RDI); OrderedNode *Dest = LoadGPRRegister(X86State::REG_RDI);
// Only ES prefix // Only ES prefix