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kern: return ExceptionType_UnalignedData on data abort caused by alignment fault

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This commit is contained in:
Michael Scire 2024-03-28 02:52:32 -07:00
parent bf3203da0f
commit 48e86f0406
1 changed files with 7 additions and 0 deletions
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7
libraries/libmesosphere/source/arch/arm64/kern_exception_handlers.cpp
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@ -223,6 +223,13 @@ namespace ams::kern::arch::arm64 {
type = ams::svc::ExceptionType_InstructionAbort; type = ams::svc::ExceptionType_InstructionAbort;
break; break;
case EsrEc_DataAbortEl0: case EsrEc_DataAbortEl0:
/* If esr.IFSC is "Alignment Fault", return UnalignedData instead of DataAbort. */
if ((esr & 0x3F) == 0b100001) {
type = ams::svc::ExceptionType_UnalignedData;
} else {
type = ams::svc::ExceptionType_DataAbort;
}
break;
default: default:
type = ams::svc::ExceptionType_DataAbort; type = ams::svc::ExceptionType_DataAbort;
break; break;