739 lines
22 KiB
C
739 lines
22 KiB
C
/*
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* NT exception handling routines
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*
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* Copyright 1999 Turchanov Sergey
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* Copyright 1999 Alexandre Julliard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*/
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#include <assert.h>
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#include <errno.h>
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#include <signal.h>
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#include <stdarg.h>
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "ntstatus.h"
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#define WIN32_NO_STATUS
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#include "windef.h"
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#include "winternl.h"
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#include "ddk/wdm.h"
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#include "wine/exception.h"
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#include "wine/server.h"
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#include "wine/list.h"
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#include "wine/debug.h"
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#include "excpt.h"
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#include "ntdll_misc.h"
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WINE_DEFAULT_DEBUG_CHANNEL(seh);
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typedef struct
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{
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struct list entry;
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PVECTORED_EXCEPTION_HANDLER func;
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ULONG count;
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} VECTORED_HANDLER;
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static struct list vectored_exception_handlers = LIST_INIT(vectored_exception_handlers);
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static struct list vectored_continue_handlers = LIST_INIT(vectored_continue_handlers);
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static RTL_CRITICAL_SECTION vectored_handlers_section;
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static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
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{
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0, 0, &vectored_handlers_section,
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{ &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": vectored_handlers_section") }
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};
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static RTL_CRITICAL_SECTION vectored_handlers_section = { &critsect_debug, -1, 0, 0, 0, 0 };
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static PRTL_EXCEPTION_FILTER unhandled_exception_filter;
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static VECTORED_HANDLER *add_vectored_handler( struct list *handler_list, ULONG first,
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PVECTORED_EXCEPTION_HANDLER func )
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{
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VECTORED_HANDLER *handler = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*handler) );
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if (handler)
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{
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handler->func = RtlEncodePointer( func );
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handler->count = 1;
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RtlEnterCriticalSection( &vectored_handlers_section );
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if (first) list_add_head( handler_list, &handler->entry );
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else list_add_tail( handler_list, &handler->entry );
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RtlLeaveCriticalSection( &vectored_handlers_section );
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}
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return handler;
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}
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static ULONG remove_vectored_handler( struct list *handler_list, VECTORED_HANDLER *handler )
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{
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struct list *ptr;
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ULONG ret = FALSE;
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RtlEnterCriticalSection( &vectored_handlers_section );
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LIST_FOR_EACH( ptr, handler_list )
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{
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VECTORED_HANDLER *curr_handler = LIST_ENTRY( ptr, VECTORED_HANDLER, entry );
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if (curr_handler == handler)
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{
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if (!--curr_handler->count) list_remove( ptr );
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else handler = NULL; /* don't free it yet */
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ret = TRUE;
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break;
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}
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}
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RtlLeaveCriticalSection( &vectored_handlers_section );
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if (ret) RtlFreeHeap( GetProcessHeap(), 0, handler );
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return ret;
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}
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/**********************************************************************
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* call_vectored_handlers
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*
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* Call the vectored handlers chain.
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*/
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LONG call_vectored_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
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{
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struct list *ptr;
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LONG ret = EXCEPTION_CONTINUE_SEARCH;
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EXCEPTION_POINTERS except_ptrs;
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PVECTORED_EXCEPTION_HANDLER func;
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VECTORED_HANDLER *handler, *to_free = NULL;
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except_ptrs.ExceptionRecord = rec;
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except_ptrs.ContextRecord = context;
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RtlEnterCriticalSection( &vectored_handlers_section );
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ptr = list_head( &vectored_exception_handlers );
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while (ptr)
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{
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handler = LIST_ENTRY( ptr, VECTORED_HANDLER, entry );
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handler->count++;
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func = RtlDecodePointer( handler->func );
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RtlLeaveCriticalSection( &vectored_handlers_section );
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RtlFreeHeap( GetProcessHeap(), 0, to_free );
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to_free = NULL;
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TRACE( "calling handler at %p code=%x flags=%x\n",
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func, rec->ExceptionCode, rec->ExceptionFlags );
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ret = func( &except_ptrs );
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TRACE( "handler at %p returned %x\n", func, ret );
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RtlEnterCriticalSection( &vectored_handlers_section );
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ptr = list_next( &vectored_exception_handlers, ptr );
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if (!--handler->count) /* removed during execution */
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{
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list_remove( &handler->entry );
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to_free = handler;
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}
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if (ret == EXCEPTION_CONTINUE_EXECUTION) break;
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}
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RtlLeaveCriticalSection( &vectored_handlers_section );
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RtlFreeHeap( GetProcessHeap(), 0, to_free );
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return ret;
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}
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/*******************************************************************
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* raise_status
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*
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* Implementation of RtlRaiseStatus with a specific exception record.
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*/
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void raise_status( NTSTATUS status, EXCEPTION_RECORD *rec )
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{
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EXCEPTION_RECORD ExceptionRec;
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ExceptionRec.ExceptionCode = status;
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ExceptionRec.ExceptionFlags = EH_NONCONTINUABLE;
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ExceptionRec.ExceptionRecord = rec;
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ExceptionRec.NumberParameters = 0;
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for (;;) RtlRaiseException( &ExceptionRec ); /* never returns */
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}
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/***********************************************************************
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* RtlRaiseStatus (NTDLL.@)
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*
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* Raise an exception with ExceptionCode = status
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*/
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void WINAPI RtlRaiseStatus( NTSTATUS status )
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{
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raise_status( status, NULL );
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}
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/*******************************************************************
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* KiRaiseUserExceptionDispatcher (NTDLL.@)
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*/
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NTSTATUS WINAPI KiRaiseUserExceptionDispatcher(void)
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{
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DWORD code = NtCurrentTeb()->ExceptionCode;
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EXCEPTION_RECORD rec = { code };
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RtlRaiseException( &rec );
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return code;
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}
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/*******************************************************************
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* RtlAddVectoredContinueHandler (NTDLL.@)
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*/
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PVOID WINAPI RtlAddVectoredContinueHandler( ULONG first, PVECTORED_EXCEPTION_HANDLER func )
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{
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return add_vectored_handler( &vectored_continue_handlers, first, func );
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}
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/*******************************************************************
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* RtlRemoveVectoredContinueHandler (NTDLL.@)
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*/
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ULONG WINAPI RtlRemoveVectoredContinueHandler( PVOID handler )
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{
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return remove_vectored_handler( &vectored_continue_handlers, handler );
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}
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/*******************************************************************
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* RtlAddVectoredExceptionHandler (NTDLL.@)
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*/
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PVOID WINAPI DECLSPEC_HOTPATCH RtlAddVectoredExceptionHandler( ULONG first, PVECTORED_EXCEPTION_HANDLER func )
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{
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return add_vectored_handler( &vectored_exception_handlers, first, func );
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}
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/*******************************************************************
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* RtlRemoveVectoredExceptionHandler (NTDLL.@)
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*/
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ULONG WINAPI RtlRemoveVectoredExceptionHandler( PVOID handler )
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{
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return remove_vectored_handler( &vectored_exception_handlers, handler );
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}
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/*******************************************************************
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* RtlSetUnhandledExceptionFilter (NTDLL.@)
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*/
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void WINAPI RtlSetUnhandledExceptionFilter( PRTL_EXCEPTION_FILTER filter )
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{
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unhandled_exception_filter = filter;
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}
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/*******************************************************************
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* call_unhandled_exception_filter
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*/
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LONG WINAPI call_unhandled_exception_filter( PEXCEPTION_POINTERS eptr )
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{
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if (!unhandled_exception_filter) return EXCEPTION_CONTINUE_SEARCH;
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return unhandled_exception_filter( eptr );
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}
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#if defined(__x86_64__) || defined(__arm__) || defined(__aarch64__)
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struct dynamic_unwind_entry
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{
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struct list entry;
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ULONG_PTR base;
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ULONG_PTR end;
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RUNTIME_FUNCTION *table;
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DWORD count;
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DWORD max_count;
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PGET_RUNTIME_FUNCTION_CALLBACK callback;
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PVOID context;
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};
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static struct list dynamic_unwind_list = LIST_INIT(dynamic_unwind_list);
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static RTL_CRITICAL_SECTION dynamic_unwind_section;
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static RTL_CRITICAL_SECTION_DEBUG dynamic_unwind_debug =
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{
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0, 0, &dynamic_unwind_section,
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{ &dynamic_unwind_debug.ProcessLocksList, &dynamic_unwind_debug.ProcessLocksList },
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0, 0, { (DWORD_PTR)(__FILE__ ": dynamic_unwind_section") }
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};
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static RTL_CRITICAL_SECTION dynamic_unwind_section = { &dynamic_unwind_debug, -1, 0, 0, 0, 0 };
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static ULONG_PTR get_runtime_function_end( RUNTIME_FUNCTION *func, ULONG_PTR addr )
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{
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#ifdef __x86_64__
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return func->EndAddress;
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#elif defined(__arm__)
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if (func->u.s.Flag) return func->BeginAddress + func->u.s.FunctionLength * 2;
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else
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{
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struct unwind_info
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{
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DWORD function_length : 18;
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DWORD version : 2;
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DWORD x : 1;
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DWORD e : 1;
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DWORD f : 1;
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DWORD count : 5;
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DWORD words : 4;
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} *info = (struct unwind_info *)(addr + func->u.UnwindData);
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return func->BeginAddress + info->function_length * 2;
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}
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#else /* __aarch64__ */
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if (func->u.s.Flag) return func->BeginAddress + func->u.s.FunctionLength * 4;
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else
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{
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struct unwind_info
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{
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DWORD function_length : 18;
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DWORD version : 2;
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DWORD x : 1;
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DWORD e : 1;
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DWORD epilog : 5;
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DWORD codes : 5;
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} *info = (struct unwind_info *)(addr + func->u.UnwindData);
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return func->BeginAddress + info->function_length * 4;
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}
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#endif
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}
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/**********************************************************************
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* RtlAddFunctionTable (NTDLL.@)
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*/
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BOOLEAN CDECL RtlAddFunctionTable( RUNTIME_FUNCTION *table, DWORD count, ULONG_PTR addr )
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{
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struct dynamic_unwind_entry *entry;
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TRACE( "%p %u %lx\n", table, count, addr );
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/* NOTE: Windows doesn't check if table is aligned or a NULL pointer */
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entry = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry) );
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if (!entry)
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return FALSE;
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entry->base = addr;
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entry->end = addr + (count ? get_runtime_function_end( &table[count - 1], addr ) : 0);
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entry->table = table;
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entry->count = count;
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entry->max_count = 0;
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entry->callback = NULL;
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entry->context = NULL;
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RtlEnterCriticalSection( &dynamic_unwind_section );
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list_add_tail( &dynamic_unwind_list, &entry->entry );
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RtlLeaveCriticalSection( &dynamic_unwind_section );
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return TRUE;
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}
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/**********************************************************************
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* RtlInstallFunctionTableCallback (NTDLL.@)
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*/
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BOOLEAN CDECL RtlInstallFunctionTableCallback( ULONG_PTR table, ULONG_PTR base, DWORD length,
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PGET_RUNTIME_FUNCTION_CALLBACK callback, PVOID context,
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PCWSTR dll )
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{
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struct dynamic_unwind_entry *entry;
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TRACE( "%lx %lx %d %p %p %s\n", table, base, length, callback, context, wine_dbgstr_w(dll) );
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/* NOTE: Windows doesn't check if the provided callback is a NULL pointer */
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/* both low-order bits must be set */
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if ((table & 0x3) != 0x3)
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return FALSE;
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entry = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry) );
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if (!entry)
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return FALSE;
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entry->base = base;
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entry->end = base + length;
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entry->table = (RUNTIME_FUNCTION *)table;
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entry->count = 0;
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entry->max_count = 0;
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entry->callback = callback;
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entry->context = context;
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RtlEnterCriticalSection( &dynamic_unwind_section );
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list_add_tail( &dynamic_unwind_list, &entry->entry );
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RtlLeaveCriticalSection( &dynamic_unwind_section );
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return TRUE;
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}
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/*************************************************************************
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* RtlAddGrowableFunctionTable (NTDLL.@)
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*/
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DWORD WINAPI RtlAddGrowableFunctionTable( void **table, RUNTIME_FUNCTION *functions, DWORD count,
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DWORD max_count, ULONG_PTR base, ULONG_PTR end )
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{
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struct dynamic_unwind_entry *entry;
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TRACE( "%p, %p, %u, %u, %lx, %lx\n", table, functions, count, max_count, base, end );
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entry = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*entry) );
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if (!entry)
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return STATUS_NO_MEMORY;
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entry->base = base;
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entry->end = end;
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entry->table = functions;
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entry->count = count;
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entry->max_count = max_count;
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entry->callback = NULL;
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entry->context = NULL;
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RtlEnterCriticalSection( &dynamic_unwind_section );
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list_add_tail( &dynamic_unwind_list, &entry->entry );
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RtlLeaveCriticalSection( &dynamic_unwind_section );
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*table = entry;
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return STATUS_SUCCESS;
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}
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/*************************************************************************
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* RtlGrowFunctionTable (NTDLL.@)
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*/
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void WINAPI RtlGrowFunctionTable( void *table, DWORD count )
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{
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struct dynamic_unwind_entry *entry;
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TRACE( "%p, %u\n", table, count );
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RtlEnterCriticalSection( &dynamic_unwind_section );
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LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
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{
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if (entry == table)
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{
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if (count > entry->count && count <= entry->max_count)
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entry->count = count;
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break;
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}
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}
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RtlLeaveCriticalSection( &dynamic_unwind_section );
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}
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/*************************************************************************
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* RtlDeleteGrowableFunctionTable (NTDLL.@)
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*/
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void WINAPI RtlDeleteGrowableFunctionTable( void *table )
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{
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struct dynamic_unwind_entry *entry, *to_free = NULL;
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TRACE( "%p\n", table );
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RtlEnterCriticalSection( &dynamic_unwind_section );
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LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
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{
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if (entry == table)
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{
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to_free = entry;
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list_remove( &entry->entry );
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break;
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}
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|
}
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RtlLeaveCriticalSection( &dynamic_unwind_section );
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|
|
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RtlFreeHeap( GetProcessHeap(), 0, to_free );
|
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}
|
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|
|
|
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/**********************************************************************
|
|
* RtlDeleteFunctionTable (NTDLL.@)
|
|
*/
|
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BOOLEAN CDECL RtlDeleteFunctionTable( RUNTIME_FUNCTION *table )
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{
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struct dynamic_unwind_entry *entry, *to_free = NULL;
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|
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TRACE( "%p\n", table );
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|
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RtlEnterCriticalSection( &dynamic_unwind_section );
|
|
LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
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|
{
|
|
if (entry->table == table)
|
|
{
|
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to_free = entry;
|
|
list_remove( &entry->entry );
|
|
break;
|
|
}
|
|
}
|
|
RtlLeaveCriticalSection( &dynamic_unwind_section );
|
|
|
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if (!to_free) return FALSE;
|
|
|
|
RtlFreeHeap( GetProcessHeap(), 0, to_free );
|
|
return TRUE;
|
|
}
|
|
|
|
|
|
/* helper for lookup_function_info() */
|
|
static RUNTIME_FUNCTION *find_function_info( ULONG_PTR pc, ULONG_PTR base,
|
|
RUNTIME_FUNCTION *func, ULONG size )
|
|
{
|
|
int min = 0;
|
|
int max = size - 1;
|
|
|
|
while (min <= max)
|
|
{
|
|
#ifdef __x86_64__
|
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int pos = (min + max) / 2;
|
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if (pc < base + func[pos].BeginAddress) max = pos - 1;
|
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else if (pc >= base + func[pos].EndAddress) min = pos + 1;
|
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else
|
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{
|
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func += pos;
|
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while (func->UnwindData & 1) /* follow chained entry */
|
|
func = (RUNTIME_FUNCTION *)(base + (func->UnwindData & ~1));
|
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return func;
|
|
}
|
|
#elif defined(__arm__)
|
|
int pos = (min + max) / 2;
|
|
if (pc < base + (func[pos].BeginAddress & ~1)) max = pos - 1;
|
|
else if (pc >= base + get_runtime_function_end( &func[pos], base )) min = pos + 1;
|
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else return func + pos;
|
|
#else /* __aarch64__ */
|
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int pos = (min + max) / 2;
|
|
if (pc < base + func[pos].BeginAddress) max = pos - 1;
|
|
else if (pc >= base + get_runtime_function_end( &func[pos], base )) min = pos + 1;
|
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else return func + pos;
|
|
#endif
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* lookup_function_info
|
|
*/
|
|
RUNTIME_FUNCTION *lookup_function_info( ULONG_PTR pc, ULONG_PTR *base, LDR_DATA_TABLE_ENTRY **module )
|
|
{
|
|
RUNTIME_FUNCTION *func = NULL;
|
|
struct dynamic_unwind_entry *entry;
|
|
ULONG size;
|
|
|
|
/* PE module or wine module */
|
|
if (!LdrFindEntryForAddress( (void *)pc, module ))
|
|
{
|
|
*base = (ULONG_PTR)(*module)->DllBase;
|
|
if ((func = RtlImageDirectoryEntryToData( (*module)->DllBase, TRUE,
|
|
IMAGE_DIRECTORY_ENTRY_EXCEPTION, &size )))
|
|
{
|
|
/* lookup in function table */
|
|
func = find_function_info( pc, (ULONG_PTR)(*module)->DllBase, func, size/sizeof(*func) );
|
|
}
|
|
}
|
|
else
|
|
{
|
|
*module = NULL;
|
|
|
|
RtlEnterCriticalSection( &dynamic_unwind_section );
|
|
LIST_FOR_EACH_ENTRY( entry, &dynamic_unwind_list, struct dynamic_unwind_entry, entry )
|
|
{
|
|
if (pc >= entry->base && pc < entry->end)
|
|
{
|
|
*base = entry->base;
|
|
/* use callback or lookup in function table */
|
|
if (entry->callback)
|
|
func = entry->callback( pc, entry->context );
|
|
else
|
|
func = find_function_info( pc, entry->base, entry->table, entry->count );
|
|
break;
|
|
}
|
|
}
|
|
RtlLeaveCriticalSection( &dynamic_unwind_section );
|
|
}
|
|
|
|
return func;
|
|
}
|
|
|
|
/**********************************************************************
|
|
* RtlLookupFunctionEntry (NTDLL.@)
|
|
*/
|
|
PRUNTIME_FUNCTION WINAPI RtlLookupFunctionEntry( ULONG_PTR pc, ULONG_PTR *base,
|
|
UNWIND_HISTORY_TABLE *table )
|
|
{
|
|
LDR_DATA_TABLE_ENTRY *module;
|
|
RUNTIME_FUNCTION *func;
|
|
|
|
/* FIXME: should use the history table to make things faster */
|
|
|
|
if (!(func = lookup_function_info( pc, base, &module )))
|
|
{
|
|
*base = 0;
|
|
WARN( "no exception table found for %lx\n", pc );
|
|
}
|
|
return func;
|
|
}
|
|
|
|
#endif /* __x86_64__ || __arm__ || __aarch64__ */
|
|
|
|
|
|
/*************************************************************
|
|
* _assert
|
|
*/
|
|
void __cdecl _assert( const char *str, const char *file, unsigned int line )
|
|
{
|
|
ERR( "%s:%u: Assertion failed %s\n", file, line, debugstr_a(str) );
|
|
RtlRaiseStatus( EXCEPTION_WINE_ASSERTION );
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* __wine_spec_unimplemented_stub
|
|
*
|
|
* ntdll-specific implementation to avoid depending on kernel functions.
|
|
* Can be removed once ntdll.spec no longer contains stubs.
|
|
*/
|
|
void __cdecl __wine_spec_unimplemented_stub( const char *module, const char *function )
|
|
{
|
|
EXCEPTION_RECORD record;
|
|
|
|
record.ExceptionCode = EXCEPTION_WINE_STUB;
|
|
record.ExceptionFlags = EH_NONCONTINUABLE;
|
|
record.ExceptionRecord = NULL;
|
|
record.ExceptionAddress = __wine_spec_unimplemented_stub;
|
|
record.NumberParameters = 2;
|
|
record.ExceptionInformation[0] = (ULONG_PTR)module;
|
|
record.ExceptionInformation[1] = (ULONG_PTR)function;
|
|
for (;;) RtlRaiseException( &record );
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* IsBadStringPtrA
|
|
*
|
|
* IsBadStringPtrA replacement for ntdll, to catch exception in debug traces.
|
|
*/
|
|
BOOL WINAPI IsBadStringPtrA( LPCSTR str, UINT_PTR max )
|
|
{
|
|
if (!str) return TRUE;
|
|
__TRY
|
|
{
|
|
volatile const char *p = str;
|
|
while (p != str + max) if (!*p++) break;
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
return TRUE;
|
|
}
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/*************************************************************
|
|
* IsBadStringPtrW
|
|
*
|
|
* IsBadStringPtrW replacement for ntdll, to catch exception in debug traces.
|
|
*/
|
|
BOOL WINAPI IsBadStringPtrW( LPCWSTR str, UINT_PTR max )
|
|
{
|
|
if (!str) return TRUE;
|
|
__TRY
|
|
{
|
|
volatile const WCHAR *p = str;
|
|
while (p != str + max) if (!*p++) break;
|
|
}
|
|
__EXCEPT_PAGE_FAULT
|
|
{
|
|
return TRUE;
|
|
}
|
|
__ENDTRY
|
|
return FALSE;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* RtlGetEnabledExtendedFeatures (NTDLL.@)
|
|
*/
|
|
ULONG64 WINAPI RtlGetEnabledExtendedFeatures(ULONG64 feature_mask)
|
|
{
|
|
return user_shared_data->XState.EnabledFeatures & feature_mask;
|
|
}
|
|
|
|
static const struct context_parameters
|
|
{
|
|
ULONG arch_flag;
|
|
ULONG supported_flags;
|
|
ULONG context_size; /* sizeof(CONTEXT) */
|
|
ULONG context_ex_size; /* sizeof(CONTEXT_EX) */
|
|
ULONG alignment;
|
|
}
|
|
arch_context_paramaters[] =
|
|
{
|
|
{0x00100000, 0xd810005f, 0x4d0, 0x20, 7},
|
|
{0x00010000, 0xd801007f, 0x2cc, 0x18, 3},
|
|
};
|
|
|
|
static const struct context_parameters *context_get_parameters( ULONG context_flags )
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(arch_context_paramaters); ++i)
|
|
{
|
|
if (context_flags & arch_context_paramaters[i].arch_flag)
|
|
return context_flags & ~arch_context_paramaters[i].supported_flags ? NULL : &arch_context_paramaters[i];
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* RtlGetExtendedContextLength2 (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI RtlGetExtendedContextLength2( ULONG context_flags, ULONG *length, ULONG64 compaction_mask )
|
|
{
|
|
const struct context_parameters *p;
|
|
ULONG64 supported_mask;
|
|
ULONG64 size;
|
|
|
|
TRACE( "context_flags %#x, length %p, compaction_mask %s.\n", context_flags, length,
|
|
wine_dbgstr_longlong(compaction_mask) );
|
|
|
|
if (!(p = context_get_parameters( context_flags )))
|
|
return STATUS_INVALID_PARAMETER;
|
|
|
|
if (!(context_flags & 0x40))
|
|
{
|
|
*length = p->context_size + p->context_ex_size + p->alignment;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
if (!(supported_mask = RtlGetEnabledExtendedFeatures( ~(ULONG64)0) ))
|
|
return STATUS_NOT_SUPPORTED;
|
|
|
|
compaction_mask &= supported_mask;
|
|
|
|
size = p->context_size + p->context_ex_size + offsetof(XSTATE, YmmContext) + 63;
|
|
|
|
if (compaction_mask & supported_mask & (1 << XSTATE_AVX))
|
|
size += sizeof(YMMCONTEXT);
|
|
|
|
*length = size;
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
|
|
/**********************************************************************
|
|
* RtlGetExtendedContextLength (NTDLL.@)
|
|
*/
|
|
NTSTATUS WINAPI RtlGetExtendedContextLength( ULONG context_flags, ULONG *length )
|
|
{
|
|
return RtlGetExtendedContextLength2( context_flags, length, ~(ULONG64)0 );
|
|
}
|