source: trunk/src/kernel32/exceptions.cpp@ 8920

Last change on this file since 8920 was 8920, checked in by sandervl, 23 years ago

kill thread when it crashes after ExitProcess
File size: 52.4 KB
Line 
1/* $Id: exceptions.cpp,v 1.65 2002-07-26 10:47:33 sandervl Exp $ */
2
3/*
4 * Win32 Exception functions for OS/2
5 *
6 * Ported Wine exception handling code
7 *
8 * Copyright 1998 Sander van Leeuwen (OS/2 port)
9 *
10 *
11 * Project Odin Software License can be found in LICENSE.TXT
12 *
13 *
14 * (dlls\ntdll\exception.c)
15 *
16 * Copyright 1999 Turchanov Sergey
17 * Copyright 1999 Alexandre Julliard
18 *
19 * (win32\except.c)
20 *
21 * Win32 exception functions
22 *
23 * Copyright (c) 1996 Onno Hovers, (onno@stack.urc.tue.nl)
24 *
25 * Notes:
26 * What really happens behind the scenes of those new
27 * __try{...}__except(..){....} and
28 * __try{...}__finally{...}
29 * statements is simply not documented by Microsoft. There could be different
30 * reasons for this:
31 * One reason could be that they try to hide the fact that exception
32 * handling in Win32 looks almost the same as in OS/2 2.x.
33 * Another reason could be that Microsoft does not want others to write
34 * binary compatible implementations of the Win32 API (like us).
35 *
36 * Whatever the reason, THIS SUCKS!! Ensuring portabilty or future
37 * compatability may be valid reasons to keep some things undocumented.
38 * But exception handling is so basic to Win32 that it should be
39 * documented!
40 *
41 * Fixmes:
42 * -Most functions need better parameter checking.
43 * -I do not know how to handle exceptions within an exception handler.
44 * or what is done when ExceptionNestedException is returned from an
45 * exception handler
46 * -Real exceptions are not yet implemented. only the exception functions
47 * are implemented. A real implementation needs some new code in
48 * loader/signal.c. There would also be a need for showing debugging
49 * information in UnhandledExceptionFilter.
50 *
51 */
52#define INCL_MISC
53#define INCL_BASE
54#define INCL_WINBUTTONS
55#include <os2wrap.h> //Odin32 OS/2 api wrappers
56#include <stdio.h>
57#include <stdlib.h>
58#include <assert.h>
59#include <time.h>
60#include <string.h>
61#include "exceptions.h"
62#include "exceptutil.h"
63#include <misc.h>
64#include "mmap.h"
65#include <wprocess.h>
66#include <win32api.h>
67#include "oslibexcept.h"
68#include "exceptstackdump.h"
69
70#include "WinImageBase.h"
71#include "WinDllBase.h"
72#include "WinExeBase.h"
73
74/* Really lazy! But, including wincon.h means lot's of missing COORD. */
75#define CTRL_C_EVENT 0 //#include <wincon.h>
76#define CTRL_BREAK_EVENT 1 //#include <wincon.h>
77#include "console.h"
78#include "initterm.h"
79
80
81#define DBG_LOCALLOG DBG_exceptions
82#include "dbglocal.h"
83
84#ifdef WITH_KLIB
85/* quick and dirty - don't wanna mess with includes. */
86typedef enum { enmRead, enmWrite, enmUnknown } ENMACCESS;
87BOOL _Optlink kHeapDbgException(void * pvAccess,
88 ENMACCESS enmAccess,
89 void * pvIP,
90 void * pvOS);
91#endif
92
93/* Exception record for handling exceptions happening inside exception handlers */
94typedef struct
95{
96 WINEXCEPTION_FRAME frame;
97 WINEXCEPTION_FRAME *prevFrame;
98} EXC_NESTED_FRAME;
99
100//Global Process Unhandled exception filter
101static LPTOP_LEVEL_EXCEPTION_FILTER CurrentUnhExceptionFlt = NULL;
102static UINT CurrentErrorMode = 0;
103static PEXCEPTION_HANDLER StartupCodeHandler = NULL;
104
105extern "C" PWINEXCEPTION_FRAME GetExceptionRecord(ULONG offset, ULONG segment);
106
107LONG WIN32API UnhandledExceptionFilter(PWINEXCEPTION_POINTERS lpexpExceptionInfo);
108void KillWin32Process(void);
109
110static void sprintfException(PEXCEPTIONREPORTRECORD pERepRec, PEXCEPTIONREGISTRATIONRECORD pERegRec, PCONTEXTRECORD pCtxRec, PVOID p, PSZ szTrapDump);
111
112static char szTrapDump[2048] = {0};
113
114#ifdef DEBUG
115void PrintWin32ExceptionChain(PWINEXCEPTION_FRAME pframe);
116#else
117#define PrintWin32ExceptionChain(a)
118#endif
119
120/*****************************************************************************
121 * Name : UINT SetErrorMode
122 * Purpose :
123 * Parameters: UINT fuErrorMode
124 * Variables :
125 * Result :
126 * Remark :
127 * Status :
128 *
129 * Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
130 *****************************************************************************/
131
132UINT WIN32API SetErrorMode(UINT fuErrorMode)
133{
134 UINT oldmode = CurrentErrorMode;
135
136 dprintf(("KERNEL32: SetErrorMode(%08xh)\n",
137 fuErrorMode));
138 CurrentErrorMode = fuErrorMode;
139
140 if(fuErrorMode & SEM_FAILCRITICALERRORS || fuErrorMode & SEM_NOOPENFILEERRORBOX)
141 DosError(FERR_DISABLEHARDERR);
142 else
143 DosError(FERR_ENABLEHARDERR);
144
145 // SEM_NOGPFAULTERRORBOX and SEM_NOALIGNMENTFAULTEXCEPT --> UnhandledExceptionFilter()
146
147 return(oldmode);
148}
149
150#if 0
151static inline WINEXCEPTION_FRAME * EXC_push_frame( WINEXCEPTION_FRAME *frame )
152{
153 // TODO: rewrite in assembly
154 TEB *teb = GetThreadTEB();
155 frame->Prev = (PWINEXCEPTION_FRAME)teb->except;
156 teb->except = frame;
157 return frame->Prev;
158}
159
160static inline WINEXCEPTION_FRAME * EXC_pop_frame( WINEXCEPTION_FRAME *frame )
161{
162 // TODO: rewrite in assembly
163 TEB *teb = GetThreadTEB();
164 teb->except = frame->Prev;
165 return frame->Prev;
166}
167#endif
168
169/*****************************************************************************
170 * Name : VOID _Pascal OS2RaiseException
171 * Purpose : Unwinds exception handlers (heavily influenced by Wine)
172 * Parameters: ...
173 * Variables :
174 * Result :
175 * Remark :
176 * Status :
177 *
178 * Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
179 *****************************************************************************/
180
181void WIN32API RtlRaiseException(WINEXCEPTION_RECORD *rec, WINCONTEXT *context);
182
183VOID _Pascal OS2RaiseException(DWORD dwExceptionCode,
184 DWORD dwExceptionFlags,
185 DWORD cArguments,
186 DWORD *lpArguments,
187 DWORD eip, DWORD esp, DWORD ebp, DWORD flags,
188 DWORD eax, DWORD ebx, DWORD ecx, DWORD edx,
189 DWORD edi, DWORD esi, DWORD cs, DWORD ds,
190 DWORD es, DWORD fs, DWORD gs, DWORD ss)
191{
192 WINEXCEPTION_RECORD record;
193 WINEXCEPTION_POINTERS ExceptionInfo;
194 WINCONTEXT context;
195 int rc;
196 int i;
197
198 dprintf(("KERNEL32: RaiseException(%08xh)\n",
199 dwExceptionCode));
200
201 memset(&record, 0, sizeof(record));
202
203 /* compose an exception record */
204 record.ExceptionCode = dwExceptionCode;
205 record.ExceptionFlags = dwExceptionFlags;
206 record.ExceptionRecord = NULL;
207 record.NumberParameters = cArguments;
208 record.ExceptionAddress = (LPVOID)eip;
209
210 memset(&context, 0, sizeof(context));
211 context.ContextFlags = WINCONTEXT_FULL; //segments, integer, control
212 context.SegGs = gs;
213 context.SegFs = fs;
214 context.SegEs = es;
215 context.SegDs = ds;
216 context.Edi = edi;
217 context.Esi = esi;
218 context.Ebx = ebx;
219 context.Edx = edx;
220 context.Ecx = ecx;
221 context.Eax = eax;
222 context.Ebp = ebp;
223 context.Eip = eip;
224 context.SegCs = cs;
225 context.EFlags = flags;
226 context.Esp = esp;
227 context.SegSs = ss;
228
229 if(lpArguments)
230 {
231 for(i=0;
232 i<cArguments;
233 i++)
234 record.ExceptionInformation[i] = lpArguments[i];
235 }
236
237 rc = RtlDispatchException(&record, &context);
238
239 // and finally, the unhandled exception filter
240 if(rc == ExceptionContinueSearch && UnhandledExceptionFilter != NULL)
241 {
242 dprintf(("KERNEL32: RaiseException calling UnhandledExceptionFilter.\n"));
243
244 ExceptionInfo.ExceptionRecord = &record;
245 ExceptionInfo.ContextRecord = &context;
246
247 rc = UnhandledExceptionFilter(&ExceptionInfo);
248 //FIXME: UnhandledExceptionFilter does NOT return the same values as
249 // other filters!!
250 }
251
252 // terminate the process
253 if(rc != ExceptionContinueExecution ||
254 record.ExceptionFlags & EH_NONCONTINUABLE)
255 {
256 dprintf(("KERNEL32: RaiseException terminating process.\n"));
257 DosExit(EXIT_PROCESS, 0);
258 }
259
260 dprintf(("KERNEL32: RaiseException returns.\n"));
261 return;
262}
263
264/*******************************************************************
265 * EXC_RaiseHandler
266 *
267 * Handler for exceptions happening inside a handler.
268 */
269static DWORD WIN32API EXC_RaiseHandler( WINEXCEPTION_RECORD *rec, WINEXCEPTION_FRAME *frame,
270// WINCONTEXT *context, WINEXCEPTION_FRAME **dispatcher )
271 WINCONTEXT *context, LPVOID dispatcher )
272{
273 if (rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND))
274 return ExceptionContinueSearch;
275 /* We shouldn't get here so we store faulty frame in dispatcher */
276 *(PWINEXCEPTION_FRAME*)dispatcher = ((EXC_NESTED_FRAME*)frame)->prevFrame;
277 return ExceptionNestedException;
278}
279
280/*******************************************************************
281 * EXC_UnwindHandler
282 *
283 * Handler for exceptions happening inside an unwind handler.
284 */
285static DWORD WIN32API EXC_UnwindHandler( WINEXCEPTION_RECORD *rec, WINEXCEPTION_FRAME *frame,
286// WINCONTEXT *context, WINEXCEPTION_FRAME **dispatcher )
287 WINCONTEXT *context, LPVOID dispatcher )
288{
289 if (!(rec->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)))
290 return ExceptionContinueSearch;
291 /* We shouldn't get here so we store faulty frame in dispatcher */
292 *(PWINEXCEPTION_FRAME*)dispatcher = ((EXC_NESTED_FRAME*)frame)->prevFrame;
293 return ExceptionCollidedUnwind;
294}
295
296#if 1
297DWORD EXC_CallHandler( WINEXCEPTION_RECORD *record, WINEXCEPTION_FRAME *frame,
298 WINCONTEXT *context, WINEXCEPTION_FRAME **dispatcher,
299 PEXCEPTION_HANDLER handler, PEXCEPTION_HANDLER nested_handler);
300
301#else
302/*******************************************************************
303 * EXC_CallHandler
304 *
305 * Call an exception handler, setting up an exception frame to catch exceptions
306 * happening during the handler execution.
307 * WARNING:
308 * Please do not change the first 4 parameters order in any way - some exceptions handlers
309 * rely on Base Pointer (EBP) to have a fixed position related to the exception frame
310 */
311static DWORD EXC_CallHandler( WINEXCEPTION_RECORD *record, WINEXCEPTION_FRAME *frame,
312 WINCONTEXT *context, WINEXCEPTION_FRAME **dispatcher,
313 PEXCEPTION_HANDLER handler, PEXCEPTION_HANDLER nested_handler)
314{
315 EXC_NESTED_FRAME newframe;
316 DWORD ret;
317
318 newframe.frame.Handler = nested_handler;
319 newframe.prevFrame = frame;
320 EXC_push_frame( &newframe.frame );
321 dprintf(("KERNEL32: Calling handler at %p code=%lx flags=%lx\n",
322 handler, record->ExceptionCode, record->ExceptionFlags));
323 ret = handler( record, frame, context, dispatcher );
324 dprintf(("KERNEL32: Handler returned %lx\n", ret));
325 EXC_pop_frame( &newframe.frame );
326 return ret;
327}
328#endif
329//******************************************************************************
330//******************************************************************************
331DWORD RtlDispatchException(WINEXCEPTION_RECORD *pRecord, WINCONTEXT *pContext)
332{
333 PWINEXCEPTION_FRAME pFrame, dispatch, nested_frame;
334 int rc;
335
336 // get chain of exception frames
337 rc = ExceptionContinueSearch;
338
339 nested_frame = NULL;
340 TEB *winteb = GetThreadTEB();
341 pFrame = (PWINEXCEPTION_FRAME)winteb->except;
342
343 dprintf(("KERNEL32: RtlDispatchException entered"));
344
345 PrintWin32ExceptionChain(pFrame);
346
347 // walk the exception chain
348 while( (pFrame != NULL) && (pFrame != ((void *)0xFFFFFFFF)) )
349 {
350 dprintf(("KERNEL32: RtlDispatchException - pframe=%08X, pframe->Prev=%08X", pFrame, pFrame->Prev));
351 if (pFrame == pFrame->Prev) {
352 dprintf(("KERNEL32: RtlDispatchException - Invalid exception frame!!"));
353 return 0;
354 }
355
356 dispatch=0;
357
358 /* Check frame address */
359 if (((void*)pFrame < winteb->stack_low) ||
360 ((void*)(pFrame+1) > winteb->stack_top) ||
361 (int)pFrame & 3)
362 {
363 dprintf(("Invalid stack! low=%08X, top=%08X, pframe = %08X",
364 winteb->stack_low, winteb->stack_top, pFrame));
365
366 pRecord->ExceptionFlags |= EH_STACK_INVALID;
367 break;
368 }
369
370
371 /* call handler */
372 if(pFrame->Handler) {
373 rc = EXC_CallHandler(pRecord, pFrame, pContext, &dispatch, pFrame->Handler, EXC_RaiseHandler );
374 }
375 else {
376 dprintf(("pFrame->Handler is NULL!!!!!"));
377 rc = ExceptionContinueSearch;
378 }
379
380 PrintWin32ExceptionChain(pFrame);
381
382 if (pFrame == nested_frame)
383 {
384 /* no longer nested */
385 nested_frame = NULL;
386 pRecord->ExceptionFlags &= ~EH_NESTED_CALL;
387 }
388
389
390 switch(rc)
391 {
392 case ExceptionContinueExecution:
393 if (!(pRecord->ExceptionFlags & EH_NONCONTINUABLE)) {
394 dprintf(("KERNEL32: RtlDispatchException returns %#x (ContinueExecution)", rc));
395 return rc;
396 }
397 break;
398 case ExceptionContinueSearch:
399 break;
400 case ExceptionNestedException:
401 if (nested_frame < dispatch) nested_frame = dispatch;
402 pRecord->ExceptionFlags |= EH_NESTED_CALL;
403 break;
404 default:
405 break;
406 }
407
408 dprintf(("KERNEL32: RtlDispatchException - going from frame %08X to previous frame %08X", pFrame, pFrame->Prev));
409 if (pFrame == pFrame->Prev) {
410 dprintf(("KERNEL32: RtlDispatchException - Invalid exception frame!!"));
411 break;
412 }
413 pFrame = pFrame->Prev;
414 }
415 dprintf(("KERNEL32: RtlDispatchException returns %#x", rc));
416 PrintWin32ExceptionChain(pFrame);
417 return rc;
418}
419/*****************************************************************************
420 * Name : int _Pascal OS2RtlUnwind
421 * Purpose : Unwinds exception handlers (heavily influenced by Wine)
422 * Parameters: ...
423 * Variables :
424 * Result :
425 * Remark :
426 * Status :
427 *
428 * Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
429 *****************************************************************************/
430
431int _Pascal OS2RtlUnwind(PWINEXCEPTION_FRAME pEndFrame,
432 LPVOID unusedEip,
433 PWINEXCEPTION_RECORD pRecord,
434 DWORD returnEax,
435 DWORD eip, DWORD esp, DWORD ebp, DWORD flags,
436 DWORD eax, DWORD ebx, DWORD ecx, DWORD edx,
437 DWORD edi, DWORD esi, DWORD cs, DWORD ds,
438 DWORD es, DWORD fs, DWORD gs, DWORD ss)
439{
440 PWINEXCEPTION_FRAME frame, dispatch;
441 WINEXCEPTION_RECORD record, newrec;
442 WINCONTEXT context;
443 DWORD rc;
444
445 dprintf(("KERNEL32: RtlUnwind pEndFrame=%08X, unusedEip=%08X, pRecord=%08X, returnEax=%#x\n", pEndFrame, unusedEip, pRecord, returnEax));
446
447
448 memset(&context, 0, sizeof(context));
449 context.ContextFlags = WINCONTEXT_FULL; //segments, integer, control
450 context.SegGs = gs;
451 context.SegFs = fs;
452 context.SegEs = es;
453 context.SegDs = ds;
454 context.Edi = edi;
455 context.Esi = esi;
456 context.Ebx = ebx;
457 context.Edx = edx;
458 context.Ecx = ecx;
459 context.Eax = returnEax;
460 context.Ebp = ebp;
461 context.Eip = eip;
462 context.SegCs = cs;
463 context.EFlags = flags;
464 context.Esp = esp;
465 context.SegSs = ss;
466
467 /* build an exception record, if we do not have one */
468 if(!pRecord)
469 {
470 memset(&record, 0, sizeof(record));
471 record.ExceptionCode = STATUS_UNWIND;
472 record.ExceptionFlags = 0;
473 record.ExceptionRecord = NULL;
474 record.ExceptionAddress = (LPVOID)eip;
475 record.NumberParameters = 0;
476 pRecord = &record;
477 }
478
479 if(pEndFrame) pRecord->ExceptionFlags |= EH_UNWINDING;
480 else pRecord->ExceptionFlags |= EH_UNWINDING | EH_EXIT_UNWIND;
481
482 /* get chain of exception frames */
483 TEB *winteb = GetThreadTEB();
484 frame = (PWINEXCEPTION_FRAME)winteb->except;
485
486 PrintWin32ExceptionChain(frame);
487
488 while ((frame != (PWINEXCEPTION_FRAME)0xffffffff) && (frame != pEndFrame))
489 {
490 /* Check frame address */
491 if (pEndFrame && (frame > pEndFrame))
492 {
493 newrec.ExceptionCode = STATUS_INVALID_UNWIND_TARGET;
494 newrec.ExceptionFlags = EH_NONCONTINUABLE;
495 newrec.ExceptionRecord = pRecord;
496 newrec.NumberParameters = 0;
497 dprintf(("KERNEL32: RtlUnwind terminating thread.\n"));
498 DosExit(EXIT_THREAD, 0);
499 }
500 if (((void*)frame < winteb->stack_low) ||
501 ((void*)(frame+1) > winteb->stack_top) ||
502 (int)frame & 3)
503 {
504 newrec.ExceptionCode = STATUS_BAD_STACK;
505 newrec.ExceptionFlags = EH_NONCONTINUABLE;
506 newrec.ExceptionRecord = pRecord;
507 newrec.NumberParameters = 0;
508 dprintf(("KERNEL32: RtlUnwind terminating thread.\n"));
509 DosExit(EXIT_THREAD, 0);
510 }
511
512 /* Call handler */
513 dprintf(("KERNEL32: RtlUnwind - calling exception handler %08X", frame->Handler));
514 if(frame->Handler) {
515 rc = EXC_CallHandler(pRecord, frame, &context, &dispatch, frame->Handler, EXC_UnwindHandler );
516 }
517 else {
518 dprintf(("pFrame->Handler is NULL!!!!!"));
519 rc = ExceptionContinueSearch;
520 }
521 dprintf(("KERNEL32: RtlUnwind - handler returned %#x", rc));
522 switch (rc)
523 {
524 case ExceptionContinueSearch:
525 break;
526 case ExceptionCollidedUnwind:
527 frame = dispatch;
528 break;
529 default:
530 newrec.ExceptionCode = STATUS_INVALID_DISPOSITION;
531 newrec.ExceptionFlags = EH_NONCONTINUABLE;
532 newrec.ExceptionRecord = pRecord;
533 newrec.NumberParameters = 0;
534 dprintf(("KERNEL32: RtlUnwind terminating thread.\n"));
535 DosExit(EXIT_THREAD, 0);
536 break;
537 }
538 dprintf(("KERNEL32: RtlUnwind (before)- frame=%08X, frame->Prev=%08X", frame, frame->Prev));
539 SetExceptionChain((DWORD)frame->Prev);
540 frame = frame->Prev;
541 dprintf(("KERNEL32: RtlUnwind (after) - frame=%08X, frame->Prev=%08X", frame, frame->Prev));
542 }
543
544 dprintf(("KERNEL32: RtlUnwind returning.\n"));
545 PrintWin32ExceptionChain(frame);
546 return(0);
547}
548
549
550/*****************************************************************************
551 * Name : LONG WIN32API UnhandledExceptionFilter
552 * Purpose :
553 * Parameters: ...
554 * Variables :
555 * Result :
556 * Remark :
557 * Status :
558 *
559 * Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
560 *****************************************************************************/
561
562LONG WIN32API UnhandledExceptionFilter(PWINEXCEPTION_POINTERS lpexpExceptionInfo)
563{
564 char szModName[16];
565 char message[128];
566 ULONG iObj;
567 ULONG offObj;
568 HMODULE hmod;
569 DWORD rc;
570
571 dprintf(("KERNEL32: Default UnhandledExceptionFilter, CurrentErrorMode=%X", CurrentErrorMode));
572
573 // We must not care about ErrorMode here!! The app expects that its own
574 // UnhandledExceptionFilter will be cared even if it never touched ErrorMode.
575 if(CurrentUnhExceptionFlt) // && !(CurrentErrorMode & (SEM_FAILCRITICALERRORS | SEM_NOGPFAULTERRORBOX)))
576 {
577 dprintf(("KERNEL32: Calling user UnhandledExceptionFilter"));
578 rc = CurrentUnhExceptionFlt(lpexpExceptionInfo);
579 if(rc != WINEXCEPTION_CONTINUE_SEARCH)
580 return rc;
581 }
582
583 if (DosQueryModFromEIP(&hmod, &iObj, sizeof(szModName), szModName, &offObj, (ULONG)lpexpExceptionInfo->ExceptionRecord->ExceptionAddress))
584 sprintf(message, "Unhandled exception 0x%08lx at address 0x%08lx. (DQMFEIP rc=%d)",
585 lpexpExceptionInfo->ExceptionRecord->ExceptionCode,
586 lpexpExceptionInfo->ExceptionRecord->ExceptionAddress);
587 else
588 {
589 if (iObj == -1)
590 { /* fault in DosAllocMem allocated memory, hence PE loader.. */
591 Win32ImageBase * pMod;
592 if (WinExe && WinExe->insideModule((ULONG)lpexpExceptionInfo->ExceptionRecord->ExceptionAddress))
593 pMod = WinExe;
594 else
595 pMod = Win32DllBase::findModuleByAddr((ULONG)lpexpExceptionInfo->ExceptionRecord->ExceptionAddress);
596 if (pMod != NULL)
597 {
598 szModName[0] = '\0';
599 strncat(szModName, pMod->getModuleName(), sizeof(szModName) - 1);
600 iObj = 0xFF;
601 offObj = (ULONG)lpexpExceptionInfo->ExceptionRecord->ExceptionAddress
602 - (ULONG)pMod->getInstanceHandle();
603 }
604 }
605 sprintf(message,
606 "Unhandled exception 0x%08lx at address 0x%08lx.\r"
607 "Mod: %s obj: 0x%2lx off:0x%08lx",
608 lpexpExceptionInfo->ExceptionRecord->ExceptionCode,
609 lpexpExceptionInfo->ExceptionRecord->ExceptionAddress,
610 szModName, iObj, offObj);
611 }
612
613 rc = WinMessageBox(HWND_DESKTOP, HWND_DESKTOP, message, "Application Error",
614 0, MB_ABORTRETRYIGNORE | MB_ERROR);
615 switch (rc)
616 {
617 case MBID_IGNORE:
618 return WINEXCEPTION_CONTINUE_EXECUTION;
619
620 case MBID_ABORT:
621 case MBID_RETRY:
622 default:
623 return WINEXCEPTION_EXECUTE_HANDLER;
624 }
625}
626/*****************************************************************************
627 * Name : LPTOP_LEVEL_EXCEPTION_FILTER WIN32API SetUnhandledExceptionFilter
628 * Purpose :
629 * Parameters: ...
630 * Variables :
631 * Result :
632 * Remark :
633 * Status :
634 *
635 * Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
636 *****************************************************************************/
637
638LPTOP_LEVEL_EXCEPTION_FILTER WIN32API SetUnhandledExceptionFilter(LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter)
639{
640 LPTOP_LEVEL_EXCEPTION_FILTER old = CurrentUnhExceptionFlt;
641
642 dprintf(("KERNEL32: SetUnhandledExceptionFilter to %08X\n",
643 lpTopLevelExceptionFilter));
644
645 CurrentUnhExceptionFlt = lpTopLevelExceptionFilter;
646
647 return(old);
648}
649
650
651/*****************************************************************************
652 * Name : KillWin32Process
653 * Purpose :
654 * Parameters: ...
655 * Variables :
656 * Result :
657 * Remark :
658 * Status :
659 *
660 * Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
661 *****************************************************************************/
662
663
664//******************************************************************************
665VOID WIN32API ExitProcess(DWORD exitcode);
666//******************************************************************************
667void KillWin32Process(void)
668{
669 static BOOL fEntry = FALSE;
670
671 if(fEntry == FALSE) {
672 fEntry = TRUE;
673 ExitProcess(666);
674 return;
675 }
676 //Restore original OS/2 TIB selector
677 RestoreOS2FS();
678
679 SetExceptionChain((ULONG)-1);
680 DosExit(EXIT_PROCESS, 666);
681}
682//*****************************************************************************
683//*****************************************************************************
684void KillWin32Thread(void)
685{
686// ExitThread(666);
687 //Restore original OS/2 TIB selector
688 RestoreOS2FS();
689
690 SetExceptionChain((ULONG)-1);
691 DosExit(EXIT_THREAD, 666);
692}
693//*****************************************************************************
694//*****************************************************************************
695static void sprintfException(PEXCEPTIONREPORTRECORD pERepRec,
696 PEXCEPTIONREGISTRATIONRECORD pERegRec,
697 PCONTEXTRECORD pCtxRec,
698 PVOID p,
699 PSZ szTrapDump)
700{
701 PSZ pszExceptionName = "<unknown>"; /* points to name/type excpt */
702 APIRET rc = XCPT_CONTINUE_SEARCH; /* excpt-dep. code */
703 BOOL fExcptSoftware = FALSE; /* software/hardware gen. exceptn */
704 BOOL fExcptFatal = TRUE; /* fatal exception ? */
705 BOOL fExcptPortable = TRUE; /* portability of exception */
706 PPIB pPIB; /* process information block */
707 PTIB pTIB; /* thread information block */
708 ULONG ulModule; /* module number */
709 ULONG ulObject; /* object number within the module */
710 CHAR szModule[260]; /* buffer for the module name */
711 ULONG ulOffset; /* offset within the object within the module */
712 char szLineException[128];
713 char szLineExceptionType[128];
714
715 szLineException[0] = 0; /* initialize */
716 szLineExceptionType[0] = 0; /* initialize */
717 switch(pERepRec->ExceptionNum) /* take according action */
718 {
719 /* portable, non-fatal software-generated exceptions */
720 case XCPT_GUARD_PAGE_VIOLATION:
721 strcpy(szLineException, "Guard Page Violation");
722 sprintf(szLineExceptionType, "R/W %08xh at %08xh.", pERepRec->ExceptionInfo[0], pERepRec->ExceptionInfo[1]);
723 fExcptSoftware = TRUE;
724 fExcptFatal = FALSE;
725 rc = XCPT_CONTINUE_EXECUTION;
726 break;
727
728 case XCPT_UNABLE_TO_GROW_STACK:
729 strcpy(szLineException, "Unable To Grow Stack");
730 fExcptSoftware = TRUE;
731 fExcptFatal = FALSE;
732 rc = XCPT_CONTINUE_EXECUTION;
733 break;
734
735 /* portable, fatal, hardware-generated exceptions */
736 case XCPT_ACCESS_VIOLATION:
737 strcpy(szLineException, "Access Violation");
738 switch (pERepRec->ExceptionInfo[0])
739 {
740 case XCPT_READ_ACCESS:
741 sprintf (szLineExceptionType, "Read Access at address %08xh", pERepRec->ExceptionInfo[1]);
742 break;
743
744 case XCPT_WRITE_ACCESS:
745 sprintf (szLineExceptionType, "Write Access at address %08x", pERepRec->ExceptionInfo[1]);
746 break;
747
748 case XCPT_SPACE_ACCESS:
749 sprintf (szLineExceptionType, "Space Access at selector %08x", pERepRec->ExceptionInfo[1]);
750 break;
751
752 case XCPT_LIMIT_ACCESS:
753 strcpy (szLineExceptionType, "Limit Access");
754 break;
755
756 case XCPT_UNKNOWN_ACCESS:
757 strcpy (szLineExceptionType, "Unknown Access");
758 break;
759
760 default:
761 strcpy (szLineExceptionType, "(Invalid Access Code)");
762 break;
763 }
764 break;
765
766 case XCPT_INTEGER_DIVIDE_BY_ZERO:
767 strcpy(szLineException, "Division By Zero (Integer)");
768 break;
769
770 case XCPT_FLOAT_DIVIDE_BY_ZERO:
771 strcpy(szLineException, "Division By Zero (Float)");
772 break;
773
774 case XCPT_FLOAT_INVALID_OPERATION:
775 strcpy(szLineException, "Invalid Floating Point Operation");
776 break;
777
778 case XCPT_ILLEGAL_INSTRUCTION:
779 strcpy(szLineException, "Illegal Instruction");
780 break;
781
782 case XCPT_PRIVILEGED_INSTRUCTION:
783 strcpy(szLineException, "Privileged Instruction");
784 break;
785
786 case XCPT_INTEGER_OVERFLOW:
787 strcpy(szLineException, "Integer Overflow");
788 break;
789
790 case XCPT_FLOAT_OVERFLOW:
791 strcpy(szLineException, "Floating Point Overflow");
792 break;
793
794 case XCPT_FLOAT_UNDERFLOW:
795 strcpy(szLineException, "Floating Point Underflow");
796 break;
797
798 case XCPT_FLOAT_DENORMAL_OPERAND:
799 strcpy(szLineException, "Floating Point Denormal Operand");
800 break;
801
802 case XCPT_FLOAT_INEXACT_RESULT:
803 strcpy(szLineException, "Floating Point Inexact Result");
804 break;
805
806 case XCPT_FLOAT_STACK_CHECK:
807 strcpy(szLineException, "Floating Point Stack Check");
808 break;
809
810 case XCPT_DATATYPE_MISALIGNMENT:
811 strcpy(szLineException, "Datatype Misalignment");
812 sprintf(szLineExceptionType, "R/W %08x alignment %08x at %08x.", pERepRec->ExceptionInfo[0],
813 pERepRec->ExceptionInfo[1], pERepRec->ExceptionInfo[2]);
814 break;
815
816 case XCPT_BREAKPOINT:
817 strcpy(szLineException, "Breakpoint (DEBUG)");
818 break;
819
820 case XCPT_SINGLE_STEP:
821 strcpy(szLineException, "Single Step (DEBUG)");
822 break;
823
824 /* portable, fatal, software-generated exceptions */
825 case XCPT_IN_PAGE_ERROR:
826 strcpy(szLineException, "In Page Error");
827 sprintf(szLineExceptionType, "at %08x.", pERepRec->ExceptionInfo[0]);
828 fExcptSoftware = TRUE;
829 break;
830
831 case XCPT_PROCESS_TERMINATE:
832 strcpy(szLineException, "Process Termination");
833 fExcptSoftware = TRUE;
834 break;
835
836 case XCPT_ASYNC_PROCESS_TERMINATE:
837 strcpy(szLineException, "Process Termination (async)");
838 sprintf(szLineExceptionType, "terminating thread TID=%u", pERepRec->ExceptionInfo[0]);
839 fExcptSoftware = TRUE;
840 break;
841
842 case XCPT_NONCONTINUABLE_EXCEPTION:
843 strcpy(szLineException, "Noncontinuable Exception");
844 fExcptSoftware = TRUE;
845 break;
846
847 case XCPT_INVALID_DISPOSITION:
848 strcpy(szLineException, "Invalid Disposition");
849 fExcptSoftware = TRUE;
850 break;
851
852 /* non-portable, fatal exceptions */
853 case XCPT_INVALID_LOCK_SEQUENCE:
854 strcpy(szLineException, "Invalid Lock Sequence");
855 fExcptSoftware = TRUE;
856 fExcptPortable = FALSE;
857 break;
858
859 case XCPT_ARRAY_BOUNDS_EXCEEDED:
860 strcpy(szLineException, "Array Bounds Exceeded");
861 fExcptSoftware = TRUE;
862 fExcptPortable = FALSE;
863 break;
864
865 /* unwind operation exceptions */
866 case XCPT_UNWIND:
867 strcpy(szLineException, "Unwind Exception");
868 fExcptSoftware = TRUE;
869 fExcptPortable = FALSE;
870 break;
871
872 case XCPT_BAD_STACK:
873 strcpy(szLineException, "Unwind Exception, Bad Stack");
874 fExcptSoftware = TRUE;
875 fExcptPortable = FALSE;
876 break;
877
878 case XCPT_INVALID_UNWIND_TARGET:
879 strcpy(szLineException, "Unwind Exception, Invalid Target");
880 fExcptSoftware = TRUE;
881 fExcptPortable = FALSE;
882 break;
883
884 /* fatal signal exceptions */
885 case XCPT_SIGNAL:
886 strcpy(szLineException, "Signal");
887 sprintf(szLineExceptionType, "Signal Number = %08x", pERepRec->ExceptionInfo[0]);
888 fExcptSoftware = TRUE;
889 fExcptPortable = FALSE;
890
891 switch (pERepRec->ExceptionInfo[0]) /* resolve signal information */
892 {
893 case XCPT_SIGNAL_INTR:
894 strcpy(szLineException, "Signal (Interrupt)");
895 break;
896
897 case XCPT_SIGNAL_KILLPROC:
898 strcpy(szLineException, "Signal (Kill Process)");
899 break;
900
901 case XCPT_SIGNAL_BREAK:
902 strcpy(szLineException, "Signal (Break)");
903 break;
904 }
905 break;
906
907 default:
908 strcpy(szLineException, "(unknown exception code)");
909 sprintf(szLineExceptionType, "Exception Code = %08x", pERepRec->ExceptionNum);
910 break;
911 }
912
913 sprintf(szTrapDump, "---[Exception Information]------------\n %s", szLineException);
914
915 strcat(szTrapDump, " (");
916
917 if (fExcptSoftware == TRUE) /* software or hardware generated ? */
918 strcat (szTrapDump, "software generated,");
919 else
920 strcat (szTrapDump, "hardware generated,");
921
922 if (fExcptPortable == TRUE) /* portable exception ? */
923 strcat (szTrapDump, "portable,");
924 else
925 strcat (szTrapDump, "non-portable,");
926
927 if (fExcptFatal == TRUE) /* fatal exception ? */
928 strcat (szTrapDump, "fatal");
929 else
930 strcat (szTrapDump, "non-fatal");
931
932 strcat(szTrapDump, ")\n"); /* add trailing brace */
933
934
935 rc = DosQueryModFromEIP(&ulModule, &ulObject, sizeof(szModule),
936 szModule, &ulOffset, (ULONG)pERepRec->ExceptionAddress);
937
938 sprintf(szLineException, " Exception Address = %08x ", pERepRec->ExceptionAddress);
939 strcat(szTrapDump, szLineException);
940
941 if(rc == NO_ERROR && ulObject != -1)
942 {
943 sprintf(szLineException, "<%.*s> (#%u) obj #%u:%08x\n", 64, szModule, ulModule, ulObject, ulOffset);
944 strcat(szTrapDump, szLineException);
945 }
946 else
947 { /* fault in DosAllocMem allocated memory, hence PE loader.. */
948 Win32ImageBase * pMod;
949 if (WinExe && WinExe->insideModule((ULONG)pERepRec->ExceptionAddress))
950 pMod = WinExe;
951 else
952 pMod = Win32DllBase::findModuleByAddr((ULONG)pERepRec->ExceptionAddress);
953 if (pMod != NULL)
954 {
955 szModule[0] = '\0';
956 strncat(szModule, pMod->getModuleName(), sizeof(szModule) - 1);
957 ulObject = 0xFF;
958 ulOffset = (ULONG)pERepRec->ExceptionAddress - (ULONG)pMod->getInstanceHandle();
959 sprintf(szLineException, "<%.*s> (#%u) obj #%u:%08x\n", 64, szModule, ulModule, ulObject, ulOffset);
960 }
961 else sprintf(szLineException, "<unknown win32 module>\n");
962
963 strcat(szTrapDump, szLineException);
964 }
965
966 rc = DosGetInfoBlocks (&pTIB, &pPIB);
967 if (rc == NO_ERROR)
968 {
969 sprintf(szLineException, " Thread: Ordinal TID: %u, TID: %u, Priority: %04xh\n",
970 pTIB->tib_ordinal, pTIB->tib_ptib2->tib2_ultid, pTIB->tib_ptib2->tib2_ulpri);
971 strcat(szTrapDump, szLineException);
972
973 sprintf(szLineException, " Process: PID: %u, Parent: %u, Status: %u\n", pPIB->pib_ulpid,
974 pPIB->pib_ulppid, pPIB->pib_flstatus);
975 strcat(szTrapDump, szLineException);
976 }
977
978 if (pCtxRec->ContextFlags & CONTEXT_CONTROL) { /* check flags */
979 sprintf(szLineException, " SS:ESP=%04x:%08x EFLAGS=%08x\n", pCtxRec->ctx_SegSs, pCtxRec->ctx_RegEsp,
980 pCtxRec->ctx_EFlags);
981 strcat(szTrapDump, szLineException);
982 sprintf(szLineException, " CS:EIP=%04x:%08x EBP =%08x\n", pCtxRec->ctx_SegCs, pCtxRec->ctx_RegEip,
983 pCtxRec->ctx_RegEbp);
984 strcat(szTrapDump, szLineException);
985 }
986
987 if (pCtxRec->ContextFlags & CONTEXT_INTEGER) { /* check flags */
988 sprintf(szLineException, " EAX=%08x EBX=%08x ESI=%08x\n", pCtxRec->ctx_RegEax, pCtxRec->ctx_RegEbx,
989 pCtxRec->ctx_RegEsi);
990 strcat(szTrapDump, szLineException);
991 sprintf(szLineException, " ECX=%08x EDX=%08x EDI=%08x\n", pCtxRec->ctx_RegEcx, pCtxRec->ctx_RegEdx,
992 pCtxRec->ctx_RegEdi);
993 strcat(szTrapDump, szLineException);
994 }
995
996 if (pCtxRec->ContextFlags & CONTEXT_SEGMENTS) { /* check flags */
997 sprintf(szLineException, " DS=%04x ES=%08x FS=%04x GS=%04x\n", pCtxRec->ctx_SegDs, pCtxRec->ctx_SegEs, pCtxRec->ctx_SegFs, pCtxRec->ctx_SegGs);
998 strcat(szTrapDump, szLineException);
999 }
1000
1001 if (pCtxRec->ContextFlags & CONTEXT_FLOATING_POINT) /* check flags */
1002 {
1003 ULONG ulCounter; /* temporary local counter for fp stack */
1004
1005 sprintf(szLineException, " Env[0]=%08x Env[1]=%08x Env[2]=%08x Env[3]=%08x\n",
1006 pCtxRec->ctx_env[0], pCtxRec->ctx_env[1],
1007 pCtxRec->ctx_env[2], pCtxRec->ctx_env[3]);
1008 strcat(szTrapDump, szLineException);
1009
1010 sprintf(szLineException, " Env[4]=%08x Env[5]=%08x Env[6]=%08x\n",
1011 pCtxRec->ctx_env[4], pCtxRec->ctx_env[5], pCtxRec->ctx_env[6]);
1012 strcat(szTrapDump, szLineException);
1013
1014 for (ulCounter = 0; ulCounter < 8; /* see TOOLKIT\INCLUDE\BSEEXPT.H, _CONTEXT structure */
1015 ulCounter ++)
1016 {
1017 sprintf(szLineException, " FP-Stack[%u] losig=%08x hisig=%08x signexp=%04x\n",
1018 ulCounter, pCtxRec->ctx_stack[0].losig, pCtxRec->ctx_stack[0].hisig,
1019 pCtxRec->ctx_stack[0].signexp);
1020 strcat(szTrapDump, szLineException);
1021 }
1022 }
1023 sprintf(szLineException, "---[End Of Exception Information]-----\n");
1024 strcat(szTrapDump, szLineException);
1025}
1026/*****************************************************************************
1027 * Name : void static dprintfException
1028 * Purpose : log the exception to win32os2.log
1029 * Parameters: ...
1030 * Variables :
1031 * Result :
1032 * Remark :
1033 * Status :
1034 *
1035 * Author : Patrick Haller [Tue, 1999/07/01 09:00]
1036 *****************************************************************************/
1037
1038static void dprintfException(PEXCEPTIONREPORTRECORD pERepRec,
1039 PEXCEPTIONREGISTRATIONRECORD pERegRec,
1040 PCONTEXTRECORD pCtxRec,
1041 PVOID p)
1042{
1043 /* now dump the information to the logfile */
1044 dprintf(("\n%s", szTrapDump));
1045}
1046//*****************************************************************************
1047static char szExceptionLogFileName[CCHMAXPATH] = "";
1048static BOOL fExceptionLoggging = TRUE;
1049//*****************************************************************************
1050//Override filename of exception log (expects full path)
1051//*****************************************************************************
1052void WIN32API SetCustomExceptionLog(LPSTR lpszLogName)
1053{
1054 strcpy(szExceptionLogFileName, lpszLogName);
1055}
1056//*****************************************************************************
1057//*****************************************************************************
1058void WIN32API SetExceptionLogging(BOOL fEnable)
1059{
1060 fExceptionLoggging = fEnable;
1061}
1062//*****************************************************************************
1063//*****************************************************************************
1064static void logException()
1065{
1066 APIRET rc;
1067 HFILE hFile;
1068 ULONG ulAction, ulBytesWritten;
1069
1070 if(fExceptionLoggging == FALSE) {
1071 return;
1072 }
1073
1074 if(szExceptionLogFileName[0] == 0) {
1075 strcpy(szExceptionLogFileName, kernel32Path);
1076 strcat(szExceptionLogFileName, "\\except.log");
1077 }
1078 rc = DosOpen(szExceptionLogFileName, /* File path name */
1079 &hFile, /* File handle */
1080 &ulAction, /* Action taken */
1081 0L, /* File primary allocation */
1082 0L, /* File attribute */
1083 OPEN_ACTION_CREATE_IF_NEW |
1084 OPEN_ACTION_OPEN_IF_EXISTS, /* Open function type */
1085 OPEN_ACCESS_READWRITE | OPEN_SHARE_DENYNONE,
1086 0L); /* No extended attribute */
1087
1088 if(rc == NO_ERROR) {
1089 DosSetFilePtr(hFile, 0, FILE_END, &ulBytesWritten);
1090 if(WinExe) {
1091 LPSTR lpszExeName;
1092
1093 lpszExeName = WinExe->getModuleName();
1094
1095 if(lpszExeName) {
1096 DosWrite(hFile, "\n", 2, &ulBytesWritten);
1097 DosWrite(hFile, lpszExeName, strlen(lpszExeName), &ulBytesWritten);
1098 DosWrite(hFile, "\n", 2, &ulBytesWritten);
1099 }
1100 }
1101 LPSTR lpszTime;
1102 time_t curtime;
1103
1104 curtime = time(NULL);
1105 lpszTime = asctime(localtime(&curtime));
1106 if(lpszTime) {
1107 DosWrite(hFile, lpszTime, strlen(lpszTime), &ulBytesWritten);
1108 }
1109 DosWrite(hFile, szTrapDump, strlen(szTrapDump), &ulBytesWritten);
1110 DosClose(hFile);
1111 }
1112}
1113
1114/*****************************************************************************
1115 * Name : ERR _System OS2ExceptionHandler
1116 * Purpose :
1117 * Parameters: ...
1118 * Variables :
1119 * Result :
1120 * Remark :
1121 * Status :
1122 *
1123 * Author : Patrick Haller [Tue, 1999/07/01 09:00]
1124 *****************************************************************************/
1125 /* from PPC DDK */
1126#ifndef XCPT_CONTINUE_STOP
1127#define XCPT_CONTINUE_STOP 0x00716668
1128#endif
1129
1130ULONG APIENTRY OS2ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec,
1131 PEXCEPTIONREGISTRATIONRECORD pERegRec,
1132 PCONTEXTRECORD pCtxRec,
1133 PVOID p)
1134{
1135 //SvL: Check if exception inside debug fprintf -> if so, clear lock so
1136 // next dprintf won't wait forever
1137 int prevlock = LogException(ENTER_EXCEPTION);
1138
1139 //print exception name & exception type
1140 sprintfException(pERepRec, pERegRec, pCtxRec, p, szTrapDump);
1141
1142 /* Access violation at a known location */
1143 switch(pERepRec->ExceptionNum)
1144 {
1145 case XCPT_FLOAT_DENORMAL_OPERAND:
1146 case XCPT_FLOAT_DIVIDE_BY_ZERO:
1147 case XCPT_FLOAT_INEXACT_RESULT:
1148// case XCPT_FLOAT_INVALID_OPERATION:
1149 case XCPT_FLOAT_OVERFLOW:
1150 case XCPT_FLOAT_STACK_CHECK:
1151 case XCPT_FLOAT_UNDERFLOW:
1152 dprintfException(pERepRec, pERegRec, pCtxRec, p);
1153 dprintf(("KERNEL32: OS2ExceptionHandler: FPU exception\n"));
1154 if(!fIsOS2Image && !fExitProcess) //Only for real win32 apps
1155 {
1156 if(OSLibDispatchException(pERepRec, pERegRec, pCtxRec, p) == FALSE)
1157 {
1158 pCtxRec->ctx_env[0] |= 0x1F;
1159 pCtxRec->ctx_stack[0].losig = 0;
1160 pCtxRec->ctx_stack[0].hisig = 0;
1161 pCtxRec->ctx_stack[0].signexp = 0;
1162 }
1163 dprintf(("KERNEL32: OS2ExceptionHandler: fix and continue\n"));
1164 goto continueexecution;
1165 }
1166 else
1167 {
1168 dprintf(("KERNEL32: OS2ExceptionHandler: continue search\n"));
1169 goto continuesearch;
1170 }
1171
1172 case XCPT_PROCESS_TERMINATE:
1173 case XCPT_ASYNC_PROCESS_TERMINATE:
1174//// dprintfException(pERepRec, pERegRec, pCtxRec, p);
1175 SetExceptionChain((ULONG)-1);
1176 goto continuesearch;
1177
1178 case XCPT_ACCESS_VIOLATION:
1179 {
1180 Win32MemMap *map;
1181 BOOL fWriteAccess = FALSE;
1182 ULONG offset, accessflag;
1183
1184#ifdef WITH_KLIB
1185 if ( pERepRec->ExceptionInfo[0] == XCPT_READ_ACCESS
1186 || pERepRec->ExceptionInfo[0] == XCPT_WRITE_ACCESS
1187 || pERepRec->ExceptionInfo[0] == XCPT_EXECUTE_ACCESS
1188 || pERepRec->ExceptionInfo[0] == XCPT_UNKNOWN_ACCESS
1189 )
1190 {
1191 ENMACCESS enmAccess = enmRead;
1192 switch (pERepRec->ExceptionInfo[0])
1193 {
1194 case XCPT_WRITE_ACCESS: enmAccess = enmWrite; break;
1195 case XCPT_UNKNOWN_ACCESS: enmAccess = enmUnknown; break;
1196 }
1197
1198 if (kHeapDbgException((void*)pERepRec->ExceptionInfo[1],
1199 enmAccess,
1200 pERepRec->ExceptionAddress,
1201 pERepRec))
1202 goto continueexecution;
1203 }
1204#endif
1205
1206 if(pERepRec->ExceptionInfo[1] == 0 && pERepRec->ExceptionInfo[1] == XCPT_DATA_UNKNOWN) {
1207 goto continueFail;
1208 }
1209
1210//------------->>> WARNING: potentially dangerous workaround!!
1211 /* Some apps set ES = FS and Odin doesn't like that! */
1212 /* Note: maybe we could even check for ES != DS? But maybe */
1213 /* that might cause more harm than good... */
1214 if (pCtxRec->ContextFlags & CONTEXT_SEGMENTS)
1215 if (pCtxRec->ctx_SegEs == pCtxRec->ctx_SegFs) {
1216 /* Let's just reset ES to the DS value and hope it's okay */
1217 pCtxRec->ctx_SegEs = pCtxRec->ctx_SegDs;
1218 goto continueexecution;
1219 }
1220
1221 switch(pERepRec->ExceptionInfo[0]) {
1222 case XCPT_READ_ACCESS:
1223 accessflag = MEMMAP_ACCESS_READ;
1224 break;
1225 case XCPT_WRITE_ACCESS:
1226 accessflag = MEMMAP_ACCESS_WRITE;
1227 fWriteAccess = TRUE;
1228 break;
1229 case XCPT_EXECUTE_ACCESS:
1230 accessflag = MEMMAP_ACCESS_EXECUTE;
1231 break;
1232 default:
1233 goto continueFail;
1234 }
1235
1236 map = Win32MemMapView::findMapByView(pERepRec->ExceptionInfo[1], &offset, accessflag);
1237 if(map == NULL) {
1238 goto continueFail;
1239 }
1240 if(map->commitPage(offset, fWriteAccess) == TRUE)
1241 goto continueexecution;
1242
1243 //no break;
1244 }
1245continueFail:
1246
1247////#define DEBUGSTACK
1248#ifdef DEBUGSTACK
1249 if(pCtxRec->ContextFlags & CONTEXT_CONTROL) {
1250 ULONG *stackptr;
1251 APIRET rc;
1252 int i;
1253 ULONG ulOffset, ulModule, ulObject;
1254 CHAR szModule[CCHMAXPATH];
1255
1256 stackptr = (ULONG *)pCtxRec->ctx_RegEsp;
1257 dprintf(("Stack DUMP:"));
1258 for(i=0;i<16;i++) {
1259 rc = DosQueryModFromEIP(&ulModule,
1260 &ulObject,
1261 sizeof(szModule),
1262 szModule,
1263 &ulOffset,
1264 (ULONG)*stackptr);
1265
1266 if (rc == NO_ERROR)
1267 dprintf(("0x%8x: 0x%8x %s (#%u), obj #%u:%08x", stackptr, *stackptr, szModule, ulModule, ulObject, ulOffset));
1268 else dprintf(("0x%8x: 0x%8x", stackptr, *stackptr));
1269 stackptr++;
1270 }
1271 dprintf(("Stack DUMP END"));
1272 }
1273#endif
1274
1275 case XCPT_BREAKPOINT:
1276 case XCPT_ARRAY_BOUNDS_EXCEEDED:
1277 case XCPT_DATATYPE_MISALIGNMENT:
1278 case XCPT_ILLEGAL_INSTRUCTION:
1279 case XCPT_PRIVILEGED_INSTRUCTION:
1280 case XCPT_INVALID_LOCK_SEQUENCE:
1281 case XCPT_INTEGER_DIVIDE_BY_ZERO:
1282 case XCPT_INTEGER_OVERFLOW:
1283 case XCPT_SINGLE_STEP:
1284 case XCPT_UNABLE_TO_GROW_STACK:
1285 case XCPT_IN_PAGE_ERROR:
1286CrashAndBurn:
1287 //SvL: TODO: this may not always be the right thing to do
1288 //MN: If EH_NESTED_CALL is set, an exception occurred during the execution
1289 // of this exception handler. We better bail out ASAP or we'll likely
1290 // recurse infinitely until we run out of stack space!!
1291 if (pERepRec->fHandlerFlags & EH_NESTED_CALL)
1292 goto continuesearch;
1293
1294#ifdef DEBUG
1295 dprintfException(pERepRec, pERegRec, pCtxRec, p);
1296 if(!fExitProcess && (pCtxRec->ContextFlags & CONTEXT_CONTROL)) {
1297 dbgPrintStack(pERepRec, pERegRec, pCtxRec, p);
1298 }
1299#endif
1300
1301 if(!fIsOS2Image && !fExitProcess) //Only for real win32 apps
1302 {
1303 if(OSLibDispatchException(pERepRec, pERegRec, pCtxRec, p) == TRUE)
1304 {
1305 goto continueexecution;
1306 }
1307 }
1308 else {
1309 if(fExitProcess) {
1310 PPIB pPIB;
1311 PTIB pTIB;
1312 APIRET rc;
1313
1314 rc = DosGetInfoBlocks (&pTIB, &pPIB);
1315 if(rc == NO_ERROR && pTIB->tib_ptib2->tib2_ultid != 1)
1316 {
1317 dprintf(("KERNEL32: OS2ExceptionHandler: Continue and kill thread"));
1318
1319 pCtxRec->ctx_RegEip = (ULONG)KillWin32Thread;
1320 pCtxRec->ctx_RegEsp = pCtxRec->ctx_RegEsp + 0x10;
1321 pCtxRec->ctx_RegEax = pERepRec->ExceptionNum;
1322 pCtxRec->ctx_RegEbx = pCtxRec->ctx_RegEip;
1323 goto continueexecution;
1324 }
1325 }
1326 goto continuesearch; //pass on to OS/2 RTL or app exception handler
1327 }
1328
1329 //Log fatal exception here
1330 logException();
1331
1332 dprintf(("KERNEL32: OS2ExceptionHandler: Continue and kill\n"));
1333
1334 pCtxRec->ctx_RegEip = (ULONG)KillWin32Process;
1335 pCtxRec->ctx_RegEsp = pCtxRec->ctx_RegEsp + 0x10;
1336 pCtxRec->ctx_RegEax = pERepRec->ExceptionNum;
1337 pCtxRec->ctx_RegEbx = pCtxRec->ctx_RegEip;
1338 goto continueexecution;
1339
1340 //@@@PH: growing thread stacks might need special treatment
1341 case XCPT_GUARD_PAGE_VIOLATION:
1342 //SvL: don't print anything here -> fatal hang if happens inside fprintf
1343 //dprintf(("KERNEL32: OS2ExceptionHandler: trying to grow stack (continue search)"));
1344 goto continuesearch;
1345
1346
1347 /*
1348 * In OS/2 VIO Ctrl-C and Ctrl-Break is special stuff which comes in
1349 * thru the exception handler. In Win32 CUI they are handled by a
1350 * ControlCtrlEvent procedure. So, if we receive one of those signals
1351 * we assume that this is a VIO program and let the handlers handle this.
1352 * (If they want to.)
1353 */
1354 case XCPT_SIGNAL:
1355 switch (pERepRec->ExceptionInfo[0])
1356 {
1357 case XCPT_SIGNAL_BREAK:
1358 if (InternalGenerateConsoleCtrlEvent(CTRL_BREAK_EVENT, 0))
1359 goto continueexecution;
1360 goto continuesearch;
1361 case XCPT_SIGNAL_INTR:
1362 if (InternalGenerateConsoleCtrlEvent(CTRL_C_EVENT, 0))
1363 goto continueexecution;
1364 goto continuesearch;
1365
1366 case XCPT_SIGNAL_KILLPROC: /* resolve signal information */
1367 SetExceptionChain((ULONG)-1);
1368 goto continuesearch;
1369 }
1370 goto CrashAndBurn;
1371
1372 default: //non-continuable exceptions
1373 dprintfException(pERepRec, pERegRec, pCtxRec, p);
1374 goto continuesearch;
1375 }
1376continuesearch:
1377 LogException(LEAVE_EXCEPTION, prevlock);
1378 return XCPT_CONTINUE_SEARCH;
1379
1380continueexecution:
1381 LogException(LEAVE_EXCEPTION, prevlock);
1382 return XCPT_CONTINUE_EXECUTION;
1383}
1384
1385/*****************************************************************************
1386 * Name : void OS2SetExceptionHandler
1387 * Purpose : Sets the main thread exception handler in FS:[0] (original OS/2 FS selector)
1388 * Parameters: exceptframe: pointer to exception handler frame on stack (2 ULONGs)
1389 * Variables :
1390 * Result :
1391 * Remark :
1392 * Status :
1393 *
1394 * Author : Sander van Leeuwen [Sun, 1999/08/21 12:16]
1395 *****************************************************************************/
1396void OS2SetExceptionHandler(void *exceptframe)
1397{
1398 PEXCEPTIONREGISTRATIONRECORD pExceptRec = (PEXCEPTIONREGISTRATIONRECORD)exceptframe;
1399
1400 pExceptRec->prev_structure = (PEXCEPTIONREGISTRATIONRECORD)0;
1401 pExceptRec->ExceptionHandler = OS2ExceptionHandler;
1402
1403 /* disable trap popups */
1404// DosError(FERR_DISABLEEXCEPTION | FERR_DISABLEHARDERR);
1405
1406 DosSetExceptionHandler(pExceptRec);
1407 dprintf(("OS2SetExceptionHandler: exception chain %x", pExceptRec));
1408#ifdef DEBUG_ENABLELOG_LEVEL2
1409 PrintExceptionChain();
1410#endif
1411}
1412//*****************************************************************************
1413//*****************************************************************************
1414#ifdef DEBUG
1415void PrintExceptionChain()
1416{
1417 USHORT sel = RestoreOS2FS();
1418 PEXCEPTIONREGISTRATIONRECORD pExceptRec = (PEXCEPTIONREGISTRATIONRECORD)QueryExceptionChain();
1419
1420 dprintf(("Exception chain list:"));
1421 while(pExceptRec != 0 && (ULONG)pExceptRec != -1) {
1422 dprintf(("record %x", pExceptRec));
1423 pExceptRec = pExceptRec->prev_structure;
1424 }
1425 SetFS(sel);
1426}
1427//*****************************************************************************
1428//*****************************************************************************
1429void PrintWin32ExceptionChain(PWINEXCEPTION_FRAME pframe)
1430{
1431 dprintf(("Win32 exception chain:"));
1432 while ((pframe != NULL) && ((ULONG)pframe != 0xFFFFFFFF)) {
1433 dprintf(("Record at %08X, Prev at %08X, handler at %08X", pframe, pframe->Prev, pframe->Handler));
1434 if (pframe == pframe->Prev) {
1435 dprintf(("Chain corrupted! Record at %08X pointing to itself!", pframe));
1436 break;
1437 }
1438 pframe = pframe->Prev;
1439 }
1440}
1441
1442#endif
1443
1444
1445/*****************************************************************************
1446 * Name : void OS2UnsetExceptionHandler
1447 * Purpose : Removes the main thread exception handler in FS:[0] (original OS/2 FS selector)
1448 * Parameters: exceptframe: pointer to exception handler frame on stack (2 ULONGs)
1449 * Variables :
1450 * Result :
1451 * Remark :
1452 * Status :
1453 *
1454 * Author : Sander van Leeuwen [Sun, 1999/08/21 12:16]
1455 *****************************************************************************/
1456void OS2UnsetExceptionHandler(void *exceptframe)
1457{
1458 PEXCEPTIONREGISTRATIONRECORD pExceptRec = (PEXCEPTIONREGISTRATIONRECORD)exceptframe;
1459
1460 DosUnsetExceptionHandler(pExceptRec);
1461 dprintf(("OS2UnsetExceptionHandler: exception chain %x", pExceptRec));
1462#ifdef DEBUG_ENABLELOG_LEVEL2
1463 PrintExceptionChain();
1464#endif
1465}
1466//*****************************************************************************
1467//*****************************************************************************
1468void SetOS2ExceptionChain(ULONG val)
1469{
1470 USHORT sel = GetFS();
1471
1472 SetExceptionChain(val);
1473 SetFS(sel);
1474}
1475//*****************************************************************************
1476//*****************************************************************************
1477int _System CheckCurFS()
1478{
1479 USHORT sel = RestoreOS2FS();
1480 PEXCEPTIONREGISTRATIONRECORD pExceptRec;
1481
1482 if(sel == 0x150b) {
1483 SetFS(sel);
1484 return FALSE;
1485 }
1486 pExceptRec = (PEXCEPTIONREGISTRATIONRECORD)QueryExceptionChain();
1487 if(pExceptRec->ExceptionHandler != OS2ExceptionHandler) {
1488 SetFS(sel);
1489 return FALSE;
1490 }
1491 SetFS(sel);
1492 return TRUE;
1493}
1494//*****************************************************************************
1495//*****************************************************************************
1496
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