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kern: update for new exception flag semantics

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This commit is contained in:
Michael Scire
2022-10-12 00:50:03 -07:00
committed by SciresM
parent 13238fc4fd
commit bf4fdf6188
4 changed files with 27 additions and 12 deletions
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libraries/libmesosphere/source/arch/arm64/svc/kern_svc_exception_asm.s
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@@ -86,9 +86,10 @@ _ZN3ams4kern3svc14RestoreContextEm:
/* Get our exception flags. */
ldrb w9, [sp, #(EXCEPTION_CONTEXT_SIZE + THREAD_STACK_PARAMETERS_EXCEPTION_FLAGS)]
/* Clear in-svc and needs-fpu-restore flags. */
/* Clear in-svc, in-user-exception, and needs-fpu-restore flags. */
and w10, w9, #(~(THREAD_EXCEPTION_FLAG_IS_FPU_CONTEXT_RESTORE_NEEDED))
and w10, w10, #(~(THREAD_EXCEPTION_FLAG_IS_CALLING_SVC))
and w10, w10, #(~(THREAD_EXCEPTION_FLAG_IS_IN_USERMODE_EXCEPTION_HANDLER))
strb w10, [sp, #(EXCEPTION_CONTEXT_SIZE + THREAD_STACK_PARAMETERS_EXCEPTION_FLAGS)]
/* If we don't need to restore the fpu, skip restoring it. */