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ntdll: Use a common wrapper to call exception handlers on ARM64.

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Alexandre Julliard 2024-03-05 10:29:10 +01:00
parent 5c98412929
commit 8d8c10fe92
1 changed files with 22 additions and 54 deletions
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76
dlls/ntdll/signal_arm64.c
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@ -278,63 +278,20 @@ static DWORD call_teb_unwind_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT
/***********************************************************************
* call_handler_wrapper
* call_seh_handler
*/
extern DWORD WINAPI call_handler_wrapper( EXCEPTION_RECORD *rec, CONTEXT *context, DISPATCHER_CONTEXT *dispatch );
__ASM_GLOBAL_FUNC( call_handler_wrapper,
DWORD WINAPI call_seh_handler( EXCEPTION_RECORD *rec, ULONG_PTR frame,
CONTEXT *context, void *dispatch, PEXCEPTION_ROUTINE handler );
__ASM_GLOBAL_FUNC( call_seh_handler,
"stp x29, x30, [sp, #-16]!\n\t"
".seh_save_fplr_x 16\n\t"
"mov x29, sp\n\t"
".seh_set_fp\n\t"
".seh_endprologue\n\t"
".seh_handler " __ASM_NAME("nested_exception_handler") ", @except\n\t"
"mov x3, x2\n\t" /* dispatch */
"mov x2, x1\n\t" /* context */
"ldr x1, [x3, #0x18]\n\t" /* dispatch->EstablisherFrame */
"ldr x15, [x3, #0x30]\n\t" /* dispatch->LanguageHandler */
"blr x15\n\t"
".seh_handler nested_exception_handler, @except\n\t"
"blr x4\n\t"
"ldp x29, x30, [sp], #16\n\t"
"ret" )
/**********************************************************************
* call_handler
*
* Call a single exception handler.
*/
static DWORD call_handler( EXCEPTION_RECORD *rec, CONTEXT *context, DISPATCHER_CONTEXT *dispatch )
{
DWORD res;
TRACE( "calling handler %p (rec=%p, frame=%I64x context=%p, dispatch=%p)\n",
dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
res = call_handler_wrapper( rec, context, dispatch );
TRACE( "handler at %p returned %lu\n", dispatch->LanguageHandler, res );
rec->ExceptionFlags &= EXCEPTION_NONCONTINUABLE;
return res;
}
/**********************************************************************
* call_teb_handler
*
* Call a single exception handler from the TEB chain.
* FIXME: Handle nested exceptions.
*/
static DWORD call_teb_handler( EXCEPTION_RECORD *rec, CONTEXT *context, DISPATCHER_CONTEXT *dispatch,
EXCEPTION_REGISTRATION_RECORD *teb_frame )
{
DWORD res;
TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, dispatch );
res = teb_frame->Handler( rec, teb_frame, context, (EXCEPTION_REGISTRATION_RECORD**)dispatch );
TRACE( "handler at %p returned %lu\n", teb_frame->Handler, res );
return res;
}
/**********************************************************************
* call_seh_handlers
*
@ -349,6 +306,7 @@ NTSTATUS call_seh_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_context )
CONTEXT context;
NTSTATUS status;
ULONG_PTR frame;
DWORD res;
context = *orig_context;
dispatch.TargetPc = 0;
@ -374,7 +332,14 @@ NTSTATUS call_seh_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_context )
if (dispatch.LanguageHandler)
{
switch (call_handler( rec, orig_context, &dispatch ))
TRACE( "calling handler %p (rec=%p, frame=%I64x context=%p, dispatch=%p)\n",
dispatch.LanguageHandler, rec, dispatch.EstablisherFrame, orig_context, &dispatch );
res = call_seh_handler( rec, dispatch.EstablisherFrame, orig_context,
&dispatch, dispatch.LanguageHandler );
rec->ExceptionFlags &= EXCEPTION_NONCONTINUABLE;
TRACE( "handler at %p returned %lu\n", dispatch.LanguageHandler, res );
switch (res)
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EXCEPTION_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
@ -397,10 +362,13 @@ NTSTATUS call_seh_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_context )
/* hack: call wine handlers registered in the tib list */
else while (is_valid_frame( (ULONG_PTR)teb_frame ) && (ULONG64)teb_frame < context.Sp)
{
TRACE( "found wine frame %p rsp %I64x handler %p\n",
teb_frame, context.Sp, teb_frame->Handler );
dispatch.EstablisherFrame = (ULONG64)teb_frame;
switch (call_teb_handler( rec, orig_context, &dispatch, teb_frame ))
TRACE( "calling TEB handler %p (rec=%p frame=%p context=%p dispatch=%p) sp=%I64x\n",
teb_frame->Handler, rec, teb_frame, orig_context, &dispatch, context.Sp );
res = call_seh_handler( rec, (ULONG_PTR)teb_frame, orig_context,
&dispatch, (PEXCEPTION_ROUTINE)teb_frame->Handler );
TRACE( "TEB handler at %p returned %lu\n", teb_frame->Handler, res );
switch (res)
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EXCEPTION_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;