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FXCH should set C1 to zero

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This commit is contained in:
Paulo Matos 2024-06-18 08:40:23 +02:00
parent 67e1ac0442
commit f9b38a1de7
1 changed files with 3 additions and 0 deletions
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3
FEXCore/Source/Interface/Core/OpcodeDispatcher/X87.cpp
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@ -745,6 +745,9 @@ void OpDispatchBuilder::FXCH(OpcodeArgs) {
auto a = _LoadContextIndexed(top, 16, MMBaseOffset(), 16, FPRClass);
auto b = _LoadContextIndexed(arg, 16, MMBaseOffset(), 16, FPRClass);
// Set C1 to Zero
SetRFLAG<FEXCore::X86State::X87FLAG_C1_LOC>(_Constant(0));
// Write to ST[TOP]
_StoreContextIndexed(b, top, 16, MMBaseOffset(), 16, FPRClass);
_StoreContextIndexed(a, arg, 16, MMBaseOffset(), 16, FPRClass);