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Merge pull request #2316 from Sonicadvance1/fix_negative_ficomi_f64

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X87_F64: Fixes FICOM
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Mai authored and GitHub committed 2023-01-24 17:31:05 +00:00
2 parents dcce9add60 676cf59198
commit afaff9293b
5 files changed
+347 -6
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External/FEXCore/Source/Interface/Core/OpcodeDispatcher/X87F64.cpp
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+9 -6
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@@ -39,7 +39,7 @@ class OrderedNode;
//FST(register to register)
// State loading duplicated from X87.cpp, setting host rounding mode
// See issue
// See issue
void OpDispatchBuilder::FNINITF64(OpcodeArgs) {
// Init FCW to 0x037F
auto NewFCW = _Constant(16, 0x037F);
@@ -76,7 +76,7 @@ void OpDispatchBuilder::X87LDENVF64(OpcodeArgs) {
roundingMode = _And(roundingMode, roundMask);
_SetRoundingMode(roundingMode);
_F80LoadFCW(NewFCW);
_StoreContext(2, GPRClass, NewFCW, offsetof(FEXCore::Core::CPUState, FCW));
OrderedNode *MemLocation = _Add(Mem, _Constant(Size * 1));
@@ -184,7 +184,7 @@ void OpDispatchBuilder::FBLDF64(OpcodeArgs) {
void OpDispatchBuilder::FBSTPF64(OpcodeArgs) {
auto orig_top = GetX87Top();
auto data = _LoadContextIndexed(orig_top, 8, MMBaseOffset(), 16, FPRClass);
OrderedNode *converted = _F80CVTTo(data, 8);
converted = _F80BCDStore(converted);
@@ -256,7 +256,7 @@ void OpDispatchBuilder::FSTF64(OpcodeArgs) {
//Convert to 80-bit float
auto result = _F80CVTTo(data, 8);
StoreResult_WithOpSize(FPRClass, Op, Op->Dest, result, 10, 1);
}
}
if ((Op->TableInfo->Flags & X86Tables::InstFlags::FLAGS_POP) != 0) {
// if we are popping then we must first mark this location as empty
@@ -688,7 +688,10 @@ void OpDispatchBuilder::FCOMIF64(OpcodeArgs) {
// Memory arg
if constexpr (Integer) {
arg = LoadSource(GPRClass, Op, Op->Src[0], Op->Flags, -1);
b = _Float_FromGPR_S(8, 8, arg);
if(width == 16) {
arg = _Sext(16, arg);
}
b = _Float_FromGPR_S(8, width == 64 ? 8 : 4, arg);
} else if constexpr (width == 32) {
arg = LoadSource(FPRClass, Op, Op->Src[0], Op->Flags, -1);
b = _Float_FToF(8, 4, arg);
@@ -712,7 +715,7 @@ void OpDispatchBuilder::FCOMIF64(OpcodeArgs) {
OrderedNode *HostFlag_CF = _GetHostFlag(Res, FCMP_FLAG_LT);
OrderedNode *HostFlag_ZF = _GetHostFlag(Res, FCMP_FLAG_EQ);
OrderedNode *HostFlag_Unordered = _GetHostFlag(Res, FCMP_FLAG_UNORDERED);
HostFlag_CF = _Or(HostFlag_CF, HostFlag_Unordered);
HostFlag_ZF = _Or(HostFlag_ZF, HostFlag_Unordered);