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ntdll: Add support for ExceptionCollidedUnwind return from exception handler. 

Signed-off-by: Piotr Caban <piotr@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Piotr Caban 2016-08-17 12:48:05 +02:00 committed by Alexandre Julliard
parent 66567dbdf1
commit abebb81412
1 changed files with 55 additions and 44 deletions
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99
dlls/ntdll/signal_x86_64.c
View File

@ -2256,31 +2256,15 @@ static RUNTIME_FUNCTION *lookup_function_info( ULONG64 pc, ULONG64 *base, LDR_MO
* Call a single exception handler.
* FIXME: Handle nested exceptions.
*/
static NTSTATUS call_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch, CONTEXT *orig_context )
static DWORD call_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch )
{
DWORD res;
dispatch->ControlPc = dispatch->ContextRecord->Rip;
TRACE( "calling handler %p (rec=%p, frame=0x%lx context=%p, dispatch=%p)\n",
dispatch->LanguageHandler, rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
res = dispatch->LanguageHandler( rec, dispatch->EstablisherFrame, dispatch->ContextRecord, dispatch );
TRACE( "handler at %p returned %u\n", dispatch->LanguageHandler, res );
switch (res)
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
*orig_context = *dispatch->ContextRecord;
return STATUS_SUCCESS;
case ExceptionContinueSearch:
break;
case ExceptionNestedException:
break;
default:
return STATUS_INVALID_DISPOSITION;
}
return STATUS_UNHANDLED_EXCEPTION;
return res;
}
@ -2290,31 +2274,16 @@ static NTSTATUS call_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatc
* Call a single exception handler from the TEB chain.
* FIXME: Handle nested exceptions.
*/
static NTSTATUS call_teb_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
EXCEPTION_REGISTRATION_RECORD *teb_frame, CONTEXT *orig_context )
static DWORD call_teb_handler( EXCEPTION_RECORD *rec, DISPATCHER_CONTEXT *dispatch,
EXCEPTION_REGISTRATION_RECORD *teb_frame )
{
EXCEPTION_REGISTRATION_RECORD *dispatcher;
DWORD res;
TRACE( "calling TEB handler %p (rec=%p, frame=%p context=%p, dispatcher=%p)\n",
teb_frame->Handler, rec, teb_frame, dispatch->ContextRecord, &dispatcher );
res = teb_frame->Handler( rec, teb_frame, dispatch->ContextRecord, &dispatcher );
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 %u\n", teb_frame->Handler, res );
switch (res)
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
*orig_context = *dispatch->ContextRecord;
return STATUS_SUCCESS;
case ExceptionContinueSearch:
break;
case ExceptionNestedException:
break;
default:
return STATUS_INVALID_DISPOSITION;
}
return STATUS_UNHANDLED_EXCEPTION;
return res;
}
@ -2336,7 +2305,6 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_contex
dispatch.TargetIp = 0;
dispatch.ContextRecord = &context;
dispatch.HistoryTable = &table;
dispatch.ScopeIndex = 0; /* FIXME */
for (;;)
{
new_context = context;
@ -2344,6 +2312,8 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_contex
/* FIXME: should use the history table to make things faster */
dispatch.ImageBase = 0;
dispatch.ControlPc = context.Rip;
dispatch.ScopeIndex = 0;
/* first look for PE exception information */
@ -2415,8 +2385,28 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_contex
if (dispatch.LanguageHandler)
{
status = call_handler( rec, &dispatch, orig_context );
if (status != STATUS_UNHANDLED_EXCEPTION) return status;
switch (call_handler( rec, &dispatch ))
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
*orig_context = *dispatch.ContextRecord;
return STATUS_SUCCESS;
case ExceptionContinueSearch:
case ExceptionNestedException:
break;
case ExceptionCollidedUnwind: {
ULONG64 frame;
context = *dispatch.ContextRecord;
dispatch.ContextRecord = &context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&context, NULL, &frame, NULL );
goto unwind_done;
}
default:
return STATUS_INVALID_DISPOSITION;
}
}
/* hack: call wine handlers registered in the tib list */
else while ((ULONG64)teb_frame < new_context.Rsp)
@ -2425,8 +2415,29 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_contex
teb_frame, new_context.Rsp, teb_frame->Handler );
dispatch.EstablisherFrame = (ULONG64)teb_frame;
context = *orig_context;
status = call_teb_handler( rec, &dispatch, teb_frame, orig_context );
if (status != STATUS_UNHANDLED_EXCEPTION) return status;
switch (call_teb_handler( rec, &dispatch, teb_frame ))
{
case ExceptionContinueExecution:
if (rec->ExceptionFlags & EH_NONCONTINUABLE) return STATUS_NONCONTINUABLE_EXCEPTION;
*orig_context = *dispatch.ContextRecord;
return STATUS_SUCCESS;
case ExceptionContinueSearch:
case ExceptionNestedException:
break;
case ExceptionCollidedUnwind: {
ULONG64 frame;
context = *dispatch.ContextRecord;
dispatch.ContextRecord = &context;
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&context, NULL, &frame, NULL );
teb_frame = teb_frame->Prev;
goto unwind_done;
}
default:
return STATUS_INVALID_DISPOSITION;
}
teb_frame = teb_frame->Prev;
}