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ntdll: Implement call_stack_handlers on ARM.

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This commit is contained in:
André Hentschel 2011-04-15 19:37:58 +02:00 committed by Alexandre Julliard
parent 12a4706fde
commit 372a32b53e
1 changed files with 51 additions and 6 deletions
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57
dlls/ntdll/signal_arm.c
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@ -93,6 +93,16 @@ static inline int dispatch_signal(unsigned int sig)
return handlers[sig](sig);
}
/*******************************************************************
* is_valid_frame
*/
static inline BOOL is_valid_frame( void *frame )
{
if ((ULONG_PTR)frame & 3) return FALSE;
return (frame >= NtCurrentTeb()->Tib.StackLimit &&
(void **)frame < (void **)NtCurrentTeb()->Tib.StackBase - 1);
}
/***********************************************************************
* save_context
*
@ -305,14 +315,49 @@ NTSTATUS context_from_server( CONTEXT *to, const context_t *from )
*/
static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
{
EXCEPTION_POINTERS ptrs;
EXCEPTION_REGISTRATION_RECORD *frame, *dispatch, *nested_frame;
DWORD res;
FIXME( "not implemented on ARM, exceptioncode: %x\n", rec->ExceptionCode );
frame = NtCurrentTeb()->Tib.ExceptionList;
nested_frame = NULL;
while (frame != (EXCEPTION_REGISTRATION_RECORD*)~0UL)
{
/* Check frame address */
if (!is_valid_frame( frame ))
{
rec->ExceptionFlags |= EH_STACK_INVALID;
break;
}
/* hack: call unhandled exception filter directly */
ptrs.ExceptionRecord = rec;
ptrs.ContextRecord = context;
unhandled_exception_filter( &ptrs );
/* Call handler */
TRACE( "calling handler at %p code=%x flags=%x\n",
frame->Handler, rec->ExceptionCode, rec->ExceptionFlags );
res = frame->Handler( rec, frame, context, &dispatch );
TRACE( "handler at %p returned %x\n", frame->Handler, res );
if (frame == nested_frame)
{
/* no longer nested */
nested_frame = NULL;
rec->ExceptionFlags &= ~EH_NESTED_CALL;
}
switch(res)
{
case ExceptionContinueExecution:
if (!(rec->ExceptionFlags & EH_NONCONTINUABLE)) return STATUS_SUCCESS;
return STATUS_NONCONTINUABLE_EXCEPTION;
case ExceptionContinueSearch:
break;
case ExceptionNestedException:
if (nested_frame < dispatch) nested_frame = dispatch;
rec->ExceptionFlags |= EH_NESTED_CALL;
break;
default:
return STATUS_INVALID_DISPOSITION;
}
frame = frame->Prev;
}
return STATUS_UNHANDLED_EXCEPTION;
}