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ntdll: Add a helper function for calling RtlVirtualUnwind() on x86-64. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2019-08-29 13:08:43 +02:00
parent a9755d286e
commit 2002c22afa
1 changed files with 73 additions and 173 deletions
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246
dlls/ntdll/signal_x86_64.c
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@ -1591,6 +1591,73 @@ static NTSTATUS libunwind_virtual_unwind( ULONG64 ip, BOOL* got_info, ULONG64 *f
#endif
/***********************************************************************
* virtual_unwind
*/
static NTSTATUS virtual_unwind( ULONG type, DISPATCHER_CONTEXT *dispatch, CONTEXT *context )
{
LDR_MODULE *module;
NTSTATUS status;
dispatch->ImageBase = 0;
dispatch->ScopeIndex = 0;
dispatch->ControlPc = context->Rip;
/* first look for PE exception information */
if ((dispatch->FunctionEntry = lookup_function_info( context->Rip, &dispatch->ImageBase, &module )))
{
dispatch->LanguageHandler = RtlVirtualUnwind( type, dispatch->ImageBase, context->Rip,
dispatch->FunctionEntry, context,
&dispatch->HandlerData, &dispatch->EstablisherFrame,
NULL );
return STATUS_SUCCESS;
}
/* then look for host system exception information */
if (!module || (module->Flags & LDR_WINE_INTERNAL))
{
BOOL got_info = FALSE;
struct dwarf_eh_bases bases;
const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context->Rip - 1), &bases );
if (fde)
{
status = dwarf_virtual_unwind( context->Rip, &dispatch->EstablisherFrame, context, fde,
&bases, &dispatch->LanguageHandler, &dispatch->HandlerData );
if (status != STATUS_SUCCESS) return status;
got_info = TRUE;
}
#ifdef HAVE_LIBUNWIND_H
else
{
status = libunwind_virtual_unwind( context->Rip, &got_info, &dispatch->EstablisherFrame,
context, &dispatch->LanguageHandler, &dispatch->HandlerData );
if (status != STATUS_SUCCESS) return status;
}
#endif
if (got_info)
{
if (dispatch->LanguageHandler && !module)
{
FIXME( "calling personality routine in system library not supported yet\n" );
dispatch->LanguageHandler = NULL;
}
return STATUS_SUCCESS;
}
}
else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
/* no exception information, treat as a leaf function */
dispatch->EstablisherFrame = context->Rsp;
dispatch->LanguageHandler = NULL;
context->Rip = *(ULONG64 *)context->Rsp;
context->Rsp = context->Rsp + sizeof(ULONG64);
return STATUS_SUCCESS;
}
/***********************************************************************
* dispatch_signal
*/
@ -2538,7 +2605,6 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_contex
UNWIND_HISTORY_TABLE table;
DISPATCHER_CONTEXT dispatch;
CONTEXT context;
LDR_MODULE *module;
NTSTATUS status;
context = *orig_context;
@ -2547,64 +2613,8 @@ static NTSTATUS call_stack_handlers( EXCEPTION_RECORD *rec, CONTEXT *orig_contex
dispatch.HistoryTable = &table;
for (;;)
{
/* 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 */
if ((dispatch.FunctionEntry = lookup_function_info( dispatch.ControlPc, &dispatch.ImageBase, &module )))
{
dispatch.LanguageHandler = RtlVirtualUnwind( UNW_FLAG_EHANDLER, dispatch.ImageBase,
dispatch.ControlPc, dispatch.FunctionEntry,
&context, &dispatch.HandlerData,
&dispatch.EstablisherFrame, NULL );
goto unwind_done;
}
/* then look for host system exception information */
if (!module || (module->Flags & LDR_WINE_INTERNAL))
{
BOOL got_info = FALSE;
struct dwarf_eh_bases bases;
const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(dispatch.ControlPc - 1), &bases );
if (fde)
{
status = dwarf_virtual_unwind( dispatch.ControlPc, &dispatch.EstablisherFrame, &context,
fde, &bases, &dispatch.LanguageHandler, &dispatch.HandlerData );
if (status != STATUS_SUCCESS) return status;
got_info = TRUE;
}
#ifdef HAVE_LIBUNWIND_H
else
{
status = libunwind_virtual_unwind( dispatch.ControlPc, &got_info, &dispatch.EstablisherFrame, &context,
&dispatch.LanguageHandler, &dispatch.HandlerData );
if (status != STATUS_SUCCESS) return status;
}
#endif
if (got_info)
{
dispatch.FunctionEntry = NULL;
if (dispatch.LanguageHandler && !module)
{
FIXME( "calling personality routine in system library not supported yet\n" );
dispatch.LanguageHandler = NULL;
}
goto unwind_done;
}
}
else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
context.Rip = *(ULONG64 *)context.Rsp;
context.Rsp = context.Rsp + sizeof(ULONG64);
dispatch.EstablisherFrame = context.Rsp;
dispatch.LanguageHandler = NULL;
status = virtual_unwind( UNW_FLAG_EHANDLER, &dispatch, &context );
if (status != STATUS_SUCCESS) return status;
unwind_done:
if (!dispatch.EstablisherFrame) break;
@ -3840,7 +3850,6 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
EXCEPTION_RECORD record;
DISPATCHER_CONTEXT dispatch;
CONTEXT new_context;
LDR_MODULE *module;
NTSTATUS status;
DWORD i;
@ -3880,66 +3889,8 @@ void WINAPI RtlUnwindEx( PVOID end_frame, PVOID target_ip, EXCEPTION_RECORD *rec
for (;;)
{
/* FIXME: should use the history table to make things faster */
dispatch.ImageBase = 0;
dispatch.ScopeIndex = 0;
dispatch.ControlPc = context->Rip;
/* first look for PE exception information */
if ((dispatch.FunctionEntry = lookup_function_info( context->Rip, &dispatch.ImageBase, &module )))
{
dispatch.LanguageHandler = RtlVirtualUnwind( UNW_FLAG_UHANDLER, dispatch.ImageBase,
context->Rip, dispatch.FunctionEntry,
&new_context, &dispatch.HandlerData,
&dispatch.EstablisherFrame, NULL );
goto unwind_done;
}
/* then look for host system exception information */
if (!module || (module->Flags & LDR_WINE_INTERNAL))
{
BOOL got_info = FALSE;
struct dwarf_eh_bases bases;
const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(context->Rip - 1), &bases );
if (fde)
{
status = dwarf_virtual_unwind( context->Rip, &dispatch.EstablisherFrame, &new_context, fde,
&bases, &dispatch.LanguageHandler, &dispatch.HandlerData );
if (status != STATUS_SUCCESS) raise_status( status, rec );
got_info = TRUE;
}
#ifdef HAVE_LIBUNWIND_H
else
{
status = libunwind_virtual_unwind( context->Rip, &got_info, &dispatch.EstablisherFrame, &new_context,
&dispatch.LanguageHandler, &dispatch.HandlerData );
if (status != STATUS_SUCCESS) raise_status( status, rec );
}
#endif
if (got_info)
{
dispatch.FunctionEntry = NULL;
if (dispatch.LanguageHandler && !module)
{
FIXME( "calling personality routine in system library not supported yet\n" );
dispatch.LanguageHandler = NULL;
}
goto unwind_done;
}
}
else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
/* no exception information, treat as a leaf function */
new_context.Rip = *(ULONG64 *)context->Rsp;
new_context.Rsp = context->Rsp + sizeof(ULONG64);
dispatch.EstablisherFrame = context->Rsp;
dispatch.LanguageHandler = NULL;
status = virtual_unwind( UNW_FLAG_UHANDLER, &dispatch, &new_context );
if (status != STATUS_SUCCESS) raise_status( status, rec );
unwind_done:
if (!dispatch.EstablisherFrame) break;
@ -4170,7 +4121,6 @@ USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer,
UNWIND_HISTORY_TABLE table;
DISPATCHER_CONTEXT dispatch;
CONTEXT context;
LDR_MODULE *module;
NTSTATUS status;
ULONG i;
USHORT num_entries = 0;
@ -4184,59 +4134,9 @@ USHORT WINAPI RtlCaptureStackBackTrace( ULONG skip, ULONG count, PVOID *buffer,
if (hash) *hash = 0;
for (i = 0; i < skip + count; i++)
{
/* FIXME: should use the history table to make things faster */
status = virtual_unwind( UNW_FLAG_NHANDLER, &dispatch, &context );
if (status != STATUS_SUCCESS) return i;
dispatch.ImageBase = 0;
dispatch.ControlPc = context.Rip;
dispatch.ScopeIndex = 0;
/* first look for PE exception information */
if ((dispatch.FunctionEntry = lookup_function_info( dispatch.ControlPc, &dispatch.ImageBase, &module )))
{
RtlVirtualUnwind( UNW_FLAG_NHANDLER, dispatch.ImageBase, dispatch.ControlPc,
dispatch.FunctionEntry, &context, &dispatch.HandlerData,
&dispatch.EstablisherFrame, NULL );
goto unwind_done;
}
/* then look for host system exception information */
if (!module || (module->Flags & LDR_WINE_INTERNAL))
{
BOOL got_info = FALSE;
struct dwarf_eh_bases bases;
const struct dwarf_fde *fde = _Unwind_Find_FDE( (void *)(dispatch.ControlPc - 1), &bases );
if (fde)
{
status = dwarf_virtual_unwind( dispatch.ControlPc, &dispatch.EstablisherFrame, &context,
fde, &bases, &dispatch.LanguageHandler, &dispatch.HandlerData );
if (status != STATUS_SUCCESS) return status;
got_info = TRUE;
}
#ifdef HAVE_LIBUNWIND_H
else
{
status = libunwind_virtual_unwind( dispatch.ControlPc, &got_info, &dispatch.EstablisherFrame, &context,
&dispatch.LanguageHandler, &dispatch.HandlerData );
if (status != STATUS_SUCCESS) return i;
}
#endif
if (got_info)
{
dispatch.FunctionEntry = NULL;
goto unwind_done;
}
}
else WARN( "exception data not found in %s\n", debugstr_w(module->BaseDllName.Buffer) );
context.Rip = *(ULONG64 *)context.Rsp;
context.Rsp = context.Rsp + sizeof(ULONG64);
dispatch.EstablisherFrame = context.Rsp;
unwind_done:
if (!dispatch.EstablisherFrame) break;
if ((dispatch.EstablisherFrame & 7) ||