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Merge pull request #4679 from neobrain/fix_signed_overflow

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Arm64Emitter: Fix signed overflow
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Ryan Houdek authored and GitHub committed 2025-07-15 09:02:29 -07:00
2 parents b72bdf9948 0f45f3a24d
commit 170fbb596c
1 file changed
+2 -2
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FEXCore/Source/Interface/Core/ArchHelpers/Arm64Emitter.cpp
+2 -2
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@@ -495,7 +495,7 @@ void Arm64Emitter::LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, ui
uint64_t AlignedPC = PC & ~0xFFFULL;
// Offset from aligned PC
int64_t AlignedOffset = static_cast<int64_t>(Constant) - static_cast<int64_t>(AlignedPC);
auto AlignedOffset = std::bit_cast<int64_t>(Constant - AlignedPC);
int NumMoves = 0;
@@ -511,7 +511,7 @@ void Arm64Emitter::LoadConstant(ARMEmitter::Size s, ARMEmitter::Register Reg, ui
} else {
// If the constant is within 1MB of PC then we can still use ADR to load in a single instruction
// 21-bit signed integer here
int64_t SmallOffset = static_cast<int64_t>(Constant) - static_cast<int64_t>(PC);
auto SmallOffset = std::bit_cast<int64_t>(Constant - PC);
if (ARMEmitter::Emitter::IsInt21(SmallOffset)) {
adr(Reg, SmallOffset);
} else {