dlls/ntdll/exception.c

   1 /*
   2  * NT exception handling routines
   3  *
   4  * Copyright 1999 Turchanov Sergey
   5  * Copyright 1999 Alexandre Julliard
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include "config.h"
  23 #include "wine/port.h"
  24
  25 #include <assert.h>
  26 #include <signal.h>
  27 #include <stdarg.h>
  28
  29 #include "ntstatus.h"
  30 #include "windef.h"
  31 #include "winternl.h"
  32 #include "wine/exception.h"
  33 #include "wine/server.h"
  34 #include "wine/list.h"
  35 #include "wine/debug.h"
  36 #include "excpt.h"
  37 #include "ntdll_misc.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(seh);
  40
  41 /* Exception record for handling exceptions happening inside exception handlers */
  42 typedef struct
  43 {
  44     EXCEPTION_REGISTRATION_RECORD frame;
  45     EXCEPTION_REGISTRATION_RECORD *prevFrame;
  46 } EXC_NESTED_FRAME;
  47
  48 typedef struct
  49 {
  50     struct list                 entry;
  51     PVECTORED_EXCEPTION_HANDLER func;
  52 } VECTORED_HANDLER;
  53
  54 static struct list vectored_handlers = LIST_INIT(vectored_handlers);
  55
  56 static RTL_CRITICAL_SECTION vectored_handlers_section;
  57 static RTL_CRITICAL_SECTION_DEBUG critsect_debug =
  58 {
  59     0, 0, &vectored_handlers_section,
  60     { &critsect_debug.ProcessLocksList, &critsect_debug.ProcessLocksList },
  61       0, 0, { (DWORD_PTR)(__FILE__ ": vectored_handlers_section") }
  62 };
  63 static RTL_CRITICAL_SECTION vectored_handlers_section = { &critsect_debug, -1, 0, 0, 0, 0 };
  64
  65 #ifdef __i386__
  66 # define GET_IP(context) ((LPVOID)(context)->Eip)
  67 #elif defined(__sparc__)
  68 # define GET_IP(context) ((LPVOID)(context)->pc)
  69 #elif defined(__powerpc__)
  70 # define GET_IP(context) ((LPVOID)(context)->Iar)
  71 #elif defined(__ALPHA__)
  72 # define GET_IP(context) ((LPVOID)(context)->Fir)
  73 #elif defined(__x86_64__)
  74 # define GET_IP(context) ((LPVOID)(context)->Rip)
  75 #else
  76 # error You must define GET_IP for this CPU
  77 #endif
  78
  79
  80 /*******************************************************************
  81  *         EXC_RaiseHandler
  82  *
  83  * Handler for exceptions happening inside a handler.
  84  */
  85 static DWORD EXC_RaiseHandler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
  86                                CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
  87 {
  88     if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
  89         return ExceptionContinueSearch;
  90     /* We shouldn't get here so we store faulty frame in dispatcher */
  91     *dispatcher = ((EXC_NESTED_FRAME*)frame)->prevFrame;
  92     return ExceptionNestedException;
  93 }
  94
  95
  96 /*******************************************************************
  97  *         EXC_UnwindHandler
  98  *
  99  * Handler for exceptions happening inside an unwind handler.
 100  */
 101 static DWORD EXC_UnwindHandler( EXCEPTION_RECORD *rec, EXCEPTION_REGISTRATION_RECORD *frame,
 102                                 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher )
 103 {
 104     if (!(rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
 105         return ExceptionContinueSearch;
 106     /* We shouldn't get here so we store faulty frame in dispatcher */
 107     *dispatcher = ((EXC_NESTED_FRAME*)frame)->prevFrame;
 108     return ExceptionCollidedUnwind;
 109 }
 110
 111
 112 /*******************************************************************
 113  *         EXC_CallHandler
 114  *
 115  * Call an exception handler, setting up an exception frame to catch exceptions
 116  * happening during the handler execution.
 117  * Please do not change the first 4 parameters order in any way - some exceptions handlers
 118  * rely on Base Pointer (EBP) to have a fixed position related to the exception frame
 119  */
 120 static DWORD EXC_CallHandler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
 121                               CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **dispatcher,
 122                               PEXCEPTION_HANDLER handler, PEXCEPTION_HANDLER nested_handler)
 123 {
 124     EXC_NESTED_FRAME newframe;
 125     DWORD ret;
 126
 127     newframe.frame.Handler = nested_handler;
 128     newframe.prevFrame     = frame;
 129     __wine_push_frame( &newframe.frame );
 130     TRACE( "calling handler at %p code=%lx flags=%lx\n",
 131            handler, record->ExceptionCode, record->ExceptionFlags );
 132     ret = handler( record, frame, context, dispatcher );
 133     TRACE( "handler returned %lx\n", ret );
 134     __wine_pop_frame( &newframe.frame );
 135     return ret;
 136 }
 137
 138
 139 /**********************************************************************
 140  *           send_debug_event
 141  *
 142  * Send an EXCEPTION_DEBUG_EVENT event to the debugger.
 143  */
 144 static int send_debug_event( EXCEPTION_RECORD *rec, int first_chance, CONTEXT *context )
 145 {
 146     int ret;
 147     HANDLE handle = 0;
 148
 149     if (!NtCurrentTeb()->Peb->BeingDebugged) return 0;  /* no debugger present */
 150
 151     SERVER_START_REQ( queue_exception_event )
 152     {
 153         req->first   = first_chance;
 154         wine_server_add_data( req, context, sizeof(*context) );
 155         wine_server_add_data( req, rec, sizeof(*rec) );
 156         if (!wine_server_call( req )) handle = reply->handle;
 157     }
 158     SERVER_END_REQ;
 159     if (!handle) return 0;
 160
 161     /* No need to wait on the handle since the process gets suspended
 162      * once the event is passed to the debugger, so when we get back
 163      * here the event has been continued already.
 164      */
 165     SERVER_START_REQ( get_exception_status )
 166     {
 167         req->handle = handle;
 168         wine_server_set_reply( req, context, sizeof(*context) );
 169         wine_server_call( req );
 170         ret = reply->status;
 171     }
 172     SERVER_END_REQ;
 173     NtClose( handle );
 174     return ret;
 175 }
 176
 177
 178 /**********************************************************************
 179  *           call_vectored_handlers
 180  *
 181  * Call the vectored handlers chain.
 182  */
 183 static LONG call_vectored_handlers( EXCEPTION_RECORD *rec, CONTEXT *context )
 184 {
 185     struct list *ptr;
 186     LONG ret = EXCEPTION_CONTINUE_SEARCH;
 187     EXCEPTION_POINTERS except_ptrs;
 188
 189     except_ptrs.ExceptionRecord = rec;
 190     except_ptrs.ContextRecord = context;
 191
 192     RtlEnterCriticalSection( &vectored_handlers_section );
 193     LIST_FOR_EACH( ptr, &vectored_handlers )
 194     {
 195         VECTORED_HANDLER *handler = LIST_ENTRY( ptr, VECTORED_HANDLER, entry );
 196         ret = handler->func( &except_ptrs );
 197         if (ret == EXCEPTION_CONTINUE_EXECUTION) break;
 198     }
 199     RtlLeaveCriticalSection( &vectored_handlers_section );
 200     return ret;
 201 }
 202
 203
 204 /*******************************************************************
 205  *         EXC_DefaultHandling
 206  *
 207  * Default handling for exceptions. Called when we didn't find a suitable handler.
 208  */
 209 static void EXC_DefaultHandling( EXCEPTION_RECORD *rec, CONTEXT *context )
 210 {
 211     if (send_debug_event( rec, FALSE, context ) == DBG_CONTINUE) return;  /* continue execution */
 212
 213     if (rec->ExceptionFlags & EH_STACK_INVALID)
 214         ERR("Exception frame is not in stack limits => unable to dispatch exception.\n");
 215     else if (rec->ExceptionCode == STATUS_NONCONTINUABLE_EXCEPTION)
 216         ERR("Process attempted to continue execution after noncontinuable exception.\n");
 217     else
 218         ERR("Unhandled exception code %lx flags %lx addr %p\n",
 219             rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
 220     NtTerminateProcess( NtCurrentProcess(), 1 );
 221 }
 222
 223
 224 /***********************************************************************
 225  *              RtlRaiseException (NTDLL.@)
 226  */
 227 void WINAPI __regs_RtlRaiseException( EXCEPTION_RECORD *rec, CONTEXT *context )
 228 {
 229     EXCEPTION_REGISTRATION_RECORD *frame, *dispatch, *nested_frame;
 230     EXCEPTION_RECORD newrec;
 231     DWORD res, c;
 232
 233     TRACE( "code=%lx flags=%lx addr=%p\n", rec->ExceptionCode, rec->ExceptionFlags, rec->ExceptionAddress );
 234     for (c=0; c<rec->NumberParameters; c++) TRACE(" info[%ld]=%08lx\n", c, rec->ExceptionInformation[c]);
 235     if (rec->ExceptionCode == EXCEPTION_WINE_STUB)
 236     {
 237         if (HIWORD(rec->ExceptionInformation[1]))
 238             MESSAGE( "wine: Call from %p to unimplemented function %s.%s, aborting\n",
 239                    rec->ExceptionAddress,
 240                    (char*)rec->ExceptionInformation[0], (char*)rec->ExceptionInformation[1] );
 241         else
 242             MESSAGE( "wine: Call from %p to unimplemented function %s.%ld, aborting\n",
 243                    rec->ExceptionAddress,
 244                    (char*)rec->ExceptionInformation[0], rec->ExceptionInformation[1] );
 245     }
 246 #ifdef __i386__
 247     else
 248     {
 249         TRACE(" eax=%08lx ebx=%08lx ecx=%08lx edx=%08lx esi=%08lx edi=%08lx\n",
 250               context->Eax, context->Ebx, context->Ecx,
 251               context->Edx, context->Esi, context->Edi );
 252         TRACE(" ebp=%08lx esp=%08lx cs=%04lx ds=%04lx es=%04lx fs=%04lx gs=%04lx flags=%08lx\n",
 253               context->Ebp, context->Esp, context->SegCs, context->SegDs,
 254               context->SegEs, context->SegFs, context->SegGs, context->EFlags );
 255     }
 256 #endif
 257
 258     if (send_debug_event( rec, TRUE, context ) == DBG_CONTINUE) return;  /* continue execution */
 259
 260     if (call_vectored_handlers( rec, context ) == EXCEPTION_CONTINUE_EXECUTION) return;
 261
 262     frame = NtCurrentTeb()->Tib.ExceptionList;
 263     nested_frame = NULL;
 264     while (frame != (EXCEPTION_REGISTRATION_RECORD*)~0UL)
 265     {
 266         /* Check frame address */
 267         if (((void*)frame < NtCurrentTeb()->Tib.StackLimit) ||
 268             ((void*)(frame+1) > NtCurrentTeb()->Tib.StackBase) ||
 269             (ULONG_PTR)frame & 3)
 270         {
 271             rec->ExceptionFlags |= EH_STACK_INVALID;
 272             break;
 273         }
 274
 275         /* Call handler */
 276         res = EXC_CallHandler( rec, frame, context, &dispatch, frame->Handler, EXC_RaiseHandler );
 277         if (frame == nested_frame)
 278         {
 279             /* no longer nested */
 280             nested_frame = NULL;
 281             rec->ExceptionFlags &= ~EH_NESTED_CALL;
 282         }
 283
 284         switch(res)
 285         {
 286         case ExceptionContinueExecution:
 287             if (!(rec->ExceptionFlags & EH_NONCONTINUABLE)) return;
 288             newrec.ExceptionCode    = STATUS_NONCONTINUABLE_EXCEPTION;
 289             newrec.ExceptionFlags   = EH_NONCONTINUABLE;
 290             newrec.ExceptionRecord  = rec;
 291             newrec.NumberParameters = 0;
 292             RtlRaiseException( &newrec );  /* never returns */
 293             break;
 294         case ExceptionContinueSearch:
 295             break;
 296         case ExceptionNestedException:
 297             if (nested_frame < dispatch) nested_frame = dispatch;
 298             rec->ExceptionFlags |= EH_NESTED_CALL;
 299             break;
 300         default:
 301             newrec.ExceptionCode    = STATUS_INVALID_DISPOSITION;
 302             newrec.ExceptionFlags   = EH_NONCONTINUABLE;
 303             newrec.ExceptionRecord  = rec;
 304             newrec.NumberParameters = 0;
 305             RtlRaiseException( &newrec );  /* never returns */
 306             break;
 307         }
 308         frame = frame->Prev;
 309     }
 310     EXC_DefaultHandling( rec, context );
 311 }
 312
 313 /**********************************************************************/
 314
 315 #ifdef DEFINE_REGS_ENTRYPOINT
 316 DEFINE_REGS_ENTRYPOINT( RtlRaiseException, 4, 4 );
 317 #else
 318 void WINAPI RtlRaiseException( EXCEPTION_RECORD *rec )
 319 {
 320     CONTEXT context;
 321     memset( &context, 0, sizeof(context) );
 322     __regs_RtlRaiseException( rec, &context );
 323 }
 324 #endif
 325
 326
 327 /*******************************************************************
 328  *              RtlUnwind (NTDLL.@)
 329  */
 330 void WINAPI __regs_RtlUnwind( EXCEPTION_REGISTRATION_RECORD* pEndFrame, PVOID unusedEip,
 331                               PEXCEPTION_RECORD pRecord, PVOID returnEax, CONTEXT *context )
 332 {
 333     EXCEPTION_RECORD record, newrec;
 334     EXCEPTION_REGISTRATION_RECORD *frame, *dispatch;
 335
 336 #ifdef __i386__
 337     context->Eax = (DWORD)returnEax;
 338 #endif
 339
 340     /* build an exception record, if we do not have one */
 341     if (!pRecord)
 342     {
 343         record.ExceptionCode    = STATUS_UNWIND;
 344         record.ExceptionFlags   = 0;
 345         record.ExceptionRecord  = NULL;
 346         record.ExceptionAddress = GET_IP(context);
 347         record.NumberParameters = 0;
 348         pRecord = &record;
 349     }
 350
 351     pRecord->ExceptionFlags |= EH_UNWINDING | (pEndFrame ? 0 : EH_EXIT_UNWIND);
 352
 353     TRACE( "code=%lx flags=%lx\n", pRecord->ExceptionCode, pRecord->ExceptionFlags );
 354
 355     /* get chain of exception frames */
 356     frame = NtCurrentTeb()->Tib.ExceptionList;
 357     while ((frame != (EXCEPTION_REGISTRATION_RECORD*)~0UL) && (frame != pEndFrame))
 358     {
 359         /* Check frame address */
 360         if (pEndFrame && (frame > pEndFrame))
 361         {
 362             newrec.ExceptionCode    = STATUS_INVALID_UNWIND_TARGET;
 363             newrec.ExceptionFlags   = EH_NONCONTINUABLE;
 364             newrec.ExceptionRecord  = pRecord;
 365             newrec.NumberParameters = 0;
 366             RtlRaiseException( &newrec );  /* never returns */
 367         }
 368         if (((void*)frame < NtCurrentTeb()->Tib.StackLimit) ||
 369             ((void*)(frame+1) > NtCurrentTeb()->Tib.StackBase) ||
 370             (UINT_PTR)frame & 3)
 371         {
 372             newrec.ExceptionCode    = STATUS_BAD_STACK;
 373             newrec.ExceptionFlags   = EH_NONCONTINUABLE;
 374             newrec.ExceptionRecord  = pRecord;
 375             newrec.NumberParameters = 0;
 376             RtlRaiseException( &newrec );  /* never returns */
 377         }
 378
 379         /* Call handler */
 380         switch(EXC_CallHandler( pRecord, frame, context, &dispatch,
 381                                 frame->Handler, EXC_UnwindHandler ))
 382         {
 383         case ExceptionContinueSearch:
 384             break;
 385         case ExceptionCollidedUnwind:
 386             frame = dispatch;
 387             break;
 388         default:
 389             newrec.ExceptionCode    = STATUS_INVALID_DISPOSITION;
 390             newrec.ExceptionFlags   = EH_NONCONTINUABLE;
 391             newrec.ExceptionRecord  = pRecord;
 392             newrec.NumberParameters = 0;
 393             RtlRaiseException( &newrec );  /* never returns */
 394             break;
 395         }
 396         frame = __wine_pop_frame( frame );
 397     }
 398 }
 399
 400 /**********************************************************************/
 401
 402 #ifdef DEFINE_REGS_ENTRYPOINT
 403 DEFINE_REGS_ENTRYPOINT( RtlUnwind, 16, 16 );
 404 #else
 405 void WINAPI RtlUnwind( PVOID pEndFrame, PVOID unusedEip,
 406                        PEXCEPTION_RECORD pRecord, PVOID returnEax )
 407 {
 408     CONTEXT context;
 409     memset( &context, 0, sizeof(context) );
 410     __regs_RtlUnwind( pEndFrame, unusedEip, pRecord, returnEax, &context );
 411 }
 412 #endif
 413
 414
 415 /*******************************************************************
 416  *              NtRaiseException (NTDLL.@)
 417  */
 418 void WINAPI __regs_NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *ctx,
 419                                   BOOL first, CONTEXT *context )
 420 {
 421     __regs_RtlRaiseException( rec, ctx );
 422     *context = *ctx;
 423 }
 424
 425 #ifdef DEFINE_REGS_ENTRYPOINT
 426 DEFINE_REGS_ENTRYPOINT( NtRaiseException, 12, 12 );
 427 #else
 428 void WINAPI NtRaiseException( EXCEPTION_RECORD *rec, CONTEXT *ctx, BOOL first )
 429 {
 430     CONTEXT context;
 431     memset( &context, 0, sizeof(context) );
 432     __regs_NtRaiseException( rec, ctx, first, &context );
 433 }
 434 #endif
 435
 436
 437 /***********************************************************************
 438  *            RtlRaiseStatus  (NTDLL.@)
 439  *
 440  * Raise an exception with ExceptionCode = status
 441  */
 442 void WINAPI RtlRaiseStatus( NTSTATUS status )
 443 {
 444     EXCEPTION_RECORD ExceptionRec;
 445
 446     ExceptionRec.ExceptionCode    = status;
 447     ExceptionRec.ExceptionFlags   = EH_NONCONTINUABLE;
 448     ExceptionRec.ExceptionRecord  = NULL;
 449     ExceptionRec.NumberParameters = 0;
 450     RtlRaiseException( &ExceptionRec );
 451 }
 452
 453
 454 /*******************************************************************
 455  *         RtlAddVectoredExceptionHandler   (NTDLL.@)
 456  */
 457 PVOID WINAPI RtlAddVectoredExceptionHandler( ULONG first, PVECTORED_EXCEPTION_HANDLER func )
 458 {
 459     VECTORED_HANDLER *handler = RtlAllocateHeap( GetProcessHeap(), 0, sizeof(*handler) );
 460     if (handler)
 461     {
 462         handler->func = func;
 463         RtlEnterCriticalSection( &vectored_handlers_section );
 464         if (first) list_add_head( &vectored_handlers, &handler->entry );
 465         else list_add_tail( &vectored_handlers, &handler->entry );
 466         RtlLeaveCriticalSection( &vectored_handlers_section );
 467     }
 468     return handler;
 469 }
 470
 471
 472 /*******************************************************************
 473  *         RtlRemoveVectoredExceptionHandler   (NTDLL.@)
 474  */
 475 ULONG WINAPI RtlRemoveVectoredExceptionHandler( PVOID handler )
 476 {
 477     struct list *ptr;
 478     ULONG ret = FALSE;
 479
 480     RtlEnterCriticalSection( &vectored_handlers_section );
 481     LIST_FOR_EACH( ptr, &vectored_handlers )
 482     {
 483         VECTORED_HANDLER *curr_handler = LIST_ENTRY( ptr, VECTORED_HANDLER, entry );
 484         if (curr_handler == handler)
 485         {
 486             list_remove( ptr );
 487             ret = TRUE;
 488             break;
 489         }
 490     }
 491     RtlLeaveCriticalSection( &vectored_handlers_section );
 492     if (ret) RtlFreeHeap( GetProcessHeap(), 0, handler );
 493     return ret;
 494 }
 495
 496
 497 /*************************************************************
 498  *            __wine_exception_handler (NTDLL.@)
 499  *
 500  * Exception handler for exception blocks declared in Wine code.
 501  */
 502 DWORD __wine_exception_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
 503                                 CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
 504 {
 505     __WINE_FRAME *wine_frame = (__WINE_FRAME *)frame;
 506
 507     if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND | EH_NESTED_CALL))
 508         return ExceptionContinueSearch;
 509     if (wine_frame->u.filter)
 510     {
 511         EXCEPTION_POINTERS ptrs;
 512         ptrs.ExceptionRecord = record;
 513         ptrs.ContextRecord = context;
 514         switch(wine_frame->u.filter( &ptrs ))
 515         {
 516         case EXCEPTION_CONTINUE_SEARCH:
 517             return ExceptionContinueSearch;
 518         case EXCEPTION_CONTINUE_EXECUTION:
 519             return ExceptionContinueExecution;
 520         case EXCEPTION_EXECUTE_HANDLER:
 521             break;
 522         default:
 523             MESSAGE( "Invalid return value from exception filter\n" );
 524             assert( FALSE );
 525         }
 526     }
 527     /* hack to make GetExceptionCode() work in handler */
 528     wine_frame->ExceptionCode   = record->ExceptionCode;
 529     wine_frame->ExceptionRecord = wine_frame;
 530
 531     RtlUnwind( frame, 0, record, 0 );
 532     __wine_pop_frame( frame );
 533     siglongjmp( wine_frame->jmp, 1 );
 534 }
 535
 536
 537 /*************************************************************
 538  *            __wine_finally_handler (NTDLL.@)
 539  *
 540  * Exception handler for try/finally blocks declared in Wine code.
 541  */
 542 DWORD __wine_finally_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame,
 543                               CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher )
 544 {
 545     if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
 546     {
 547         __WINE_FRAME *wine_frame = (__WINE_FRAME *)frame;
 548         wine_frame->u.finally_func( FALSE );
 549     }
 550     return ExceptionContinueSearch;
 551 }
 552
 553
 554 /*************************************************************
 555  *            __wine_spec_unimplemented_stub
 556  *
 557  * ntdll-specific implementation to avoid depending on kernel functions.
 558  * Can be removed once ntdll.spec no longer contains stubs.
 559  */
 560 void __wine_spec_unimplemented_stub( const char *module, const char *function )
 561 {
 562     EXCEPTION_RECORD record;
 563
 564     record.ExceptionCode    = EXCEPTION_WINE_STUB;
 565     record.ExceptionFlags   = EH_NONCONTINUABLE;
 566     record.ExceptionRecord  = NULL;
 567     record.ExceptionAddress = __wine_spec_unimplemented_stub;
 568     record.NumberParameters = 2;
 569     record.ExceptionInformation[0] = (ULONG_PTR)module;
 570     record.ExceptionInformation[1] = (ULONG_PTR)function;
 571     RtlRaiseException( &record );
 572 }