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Add an unreachable on hitting ud2 instead of getting stuck in an infinite loop

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kalaposfos13 2025-07-16 10:56:19 +02:00
parent cf8a6efd37
commit 8b12d2387f
1 changed files with 3 additions and 0 deletions
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src/core/cpu_patches.cpp
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@ -753,6 +753,9 @@ static bool PatchesIllegalInstructionHandler(void* context) {
ZydisDecodedOperand operands[ZYDIS_MAX_OPERAND_COUNT]; ZydisDecodedOperand operands[ZYDIS_MAX_OPERAND_COUNT];
const auto status = const auto status =
Common::Decoder::Instance()->decodeInstruction(instruction, operands, code_address); Common::Decoder::Instance()->decodeInstruction(instruction, operands, code_address);
if (ZYAN_SUCCESS(status) && instruction.mnemonic == ZydisMnemonic::ZYDIS_MNEMONIC_UD2) {
UNREACHABLE_MSG("ud2 at code address {:#x}", (u64)code_address);
}
LOG_ERROR(Core, "Failed to patch address {:x} -- mnemonic: {}", (u64)code_address, LOG_ERROR(Core, "Failed to patch address {:x} -- mnemonic: {}", (u64)code_address,
ZYAN_SUCCESS(status) ? ZydisMnemonicGetString(instruction.mnemonic) ZYAN_SUCCESS(status) ? ZydisMnemonicGetString(instruction.mnemonic)
: "Failed to decode"); : "Failed to decode");