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

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Alexandre Julliard 2024-03-05 10:54:47 +01:00
parent d6285af1fc
commit 5f890e3ce9
1 changed files with 43 additions and 81 deletions
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124
dlls/ntdll/signal_arm64.c
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@ -200,81 +200,21 @@ EXCEPTION_DISPOSITION WINAPI unwind_exception_handler( EXCEPTION_RECORD *record,
return ExceptionCollidedUnwind;
}
/**********************************************************************
* unwind_handler_wrapper
*/
extern DWORD WINAPI unwind_handler_wrapper( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch );
__ASM_GLOBAL_FUNC( unwind_handler_wrapper,
"stp x29, x30, [sp, #-32]!\n\t"
".seh_save_fplr_x 32\n\t"
"mov x29, sp\n\t"
".seh_set_fp\n\t"
".seh_endprologue\n\t"
".seh_handler " __ASM_NAME("unwind_exception_handler") ", @except, @unwind\n\t"
"str x1, [sp, #16]\n\t" /* frame[-2] = dispatch */
"mov x3, x1\n\t"
"ldr x1, [x3, #0x18]\n\t" /* dispatch->EstablisherFrame */
"ldr x2, [x3, #0x28]\n\t" /* dispatch->ContextRecord */
"ldr x15, [x3, #0x30]\n\t" /* dispatch->LanguageHandler */
"blr x15\n\t"
"ldp x29, x30, [sp], #32\n\t"
"ret" )
/**********************************************************************
* call_unwind_handler
*
* Call a single unwind handler.
*/
static DWORD call_unwind_handler( EXCEPTION_RECORD *rec, 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 = unwind_handler_wrapper( rec, dispatch );
TRACE( "handler %p returned %lx\n", dispatch->LanguageHandler, res );
switch (res)
{
case ExceptionContinueSearch:
case ExceptionCollidedUnwind:
break;
default:
raise_status( STATUS_INVALID_DISPOSITION, rec );
break;
}
return res;
}
/**********************************************************************
* call_teb_unwind_handler
*
* Call a single unwind handler from the TEB chain.
*/
static DWORD call_teb_unwind_handler( EXCEPTION_RECORD *rec, 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, dispatch->ContextRecord, (EXCEPTION_REGISTRATION_RECORD**)dispatch );
TRACE( "handler at %p returned %lu\n", teb_frame->Handler, res );
switch (res)
{
case ExceptionContinueSearch:
case ExceptionCollidedUnwind:
break;
default:
raise_status( STATUS_INVALID_DISPOSITION, rec );
break;
}
return res;
}
DWORD WINAPI call_unwind_handler( EXCEPTION_RECORD *rec, ULONG_PTR frame,
CONTEXT *context, void *dispatch, PEXCEPTION_ROUTINE handler );
__ASM_GLOBAL_FUNC( call_unwind_handler,
"stp x29, x30, [sp, #-32]!\n\t"
".seh_save_fplr_x 32\n\t"
".seh_endprologue\n\t"
".seh_handler unwind_exception_handler, @except\n\t"
"str x3, [sp, #16]\n\t" /* frame[-2] = dispatch */
"blr x4\n\t"
"ldp x29, x30, [sp], #32\n\t"
"ret" )
/***********************************************************************
@ -601,7 +541,7 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
CONTEXT new_context;
NTSTATUS status;
ULONG_PTR frame;
DWORD i;
DWORD i, res;
RtlCaptureContext( context );
new_context = *context;
@ -654,8 +594,20 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
raise_status( STATUS_INVALID_UNWIND_TARGET, rec );
}
if (dispatch.EstablisherFrame == (ULONG64)end_frame) rec->ExceptionFlags |= EXCEPTION_TARGET_UNWIND;
if (call_unwind_handler( rec, &dispatch ) == ExceptionCollidedUnwind)
TRACE( "calling handler %p (rec=%p, frame=%I64x context=%p, dispatch=%p)\n",
dispatch.LanguageHandler, rec, dispatch.EstablisherFrame,
dispatch.ContextRecord, &dispatch );
res = call_unwind_handler( rec, dispatch.EstablisherFrame, dispatch.ContextRecord,
&dispatch, dispatch.LanguageHandler );
TRACE( "handler %p returned %lx\n", dispatch.LanguageHandler, res );
switch (res)
{
case ExceptionContinueSearch:
rec->ExceptionFlags &= ~EXCEPTION_COLLIDED_UNWIND;
break;
case ExceptionCollidedUnwind:
new_context = *context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
@ -663,21 +615,30 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
NULL );
rec->ExceptionFlags |= EXCEPTION_COLLIDED_UNWIND;
goto unwind_done;
default:
raise_status( STATUS_INVALID_DISPOSITION, rec );
break;
}
rec->ExceptionFlags &= ~EXCEPTION_COLLIDED_UNWIND;
}
else /* hack: call builtin handlers registered in the tib list */
{
DWORD64 backup_frame = dispatch.EstablisherFrame;
while (is_valid_frame( (ULONG_PTR)teb_frame ) &&
(ULONG64)teb_frame < new_context.Sp &&
(ULONG64)teb_frame < (ULONG64)end_frame)
{
TRACE( "found builtin frame %p handler %p\n", teb_frame, teb_frame->Handler );
dispatch.EstablisherFrame = (ULONG64)teb_frame;
if (call_teb_unwind_handler( rec, &dispatch, teb_frame ) == ExceptionCollidedUnwind)
TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatch=%p)\n",
teb_frame->Handler, rec, teb_frame, dispatch.ContextRecord, &dispatch );
res = call_unwind_handler( rec, (ULONG_PTR)teb_frame, dispatch.ContextRecord, &dispatch,
(PEXCEPTION_ROUTINE)teb_frame->Handler );
TRACE( "handler at %p returned %lu\n", teb_frame->Handler, res );
teb_frame = __wine_pop_frame( teb_frame );
switch (res)
{
teb_frame = __wine_pop_frame( teb_frame );
case ExceptionContinueSearch:
rec->ExceptionFlags &= ~EXCEPTION_COLLIDED_UNWIND;
break;
case ExceptionCollidedUnwind:
new_context = *context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
@ -685,11 +646,12 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
&frame, NULL );
rec->ExceptionFlags |= EXCEPTION_COLLIDED_UNWIND;
goto unwind_done;
default:
raise_status( STATUS_INVALID_DISPOSITION, rec );
break;
}
teb_frame = __wine_pop_frame( teb_frame );
}
if ((ULONG64)teb_frame == (ULONG64)end_frame && (ULONG64)end_frame < new_context.Sp) break;
dispatch.EstablisherFrame = backup_frame;
}
if (dispatch.EstablisherFrame == (ULONG64)end_frame) break;