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source: trunk/src/kernel32/exceptions.cpp@ 2004

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Last change on this file since 2004 was 1811, checked in by sandervl, 26 years ago
Rewrite of PE loader code, EB's fixes + VirtualProtect bugfix
File size: 36.6 KB

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1	/* $Id: exceptions.cpp,v 1.30 1999-11-22 20:35:49 sandervl Exp $ */
2
3	/*
4	* Win32 Device IOCTL API 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 <string.h>
60	#include <builtin.h>
61	#include "exceptions.h"
62	#include "exceptutil.h"
63	#include <misc.h>
64	#include "mmap.h"
65	#include <wprocess.h>
66	#include "oslibexcept.h"
67
68	//Global Process Unhandled exception filter
69	static LPTOP_LEVEL_EXCEPTION_FILTER CurrentUnhExceptionFlt = NULL;
70	static UINT CurrentErrorMode = SEM_FAILCRITICALERRORS;
71	static PEXCEPTION_HANDLER StartupCodeHandler = NULL;
72
73	extern "C" PWINEXCEPTION_FRAME GetExceptionRecord(ULONG offset, ULONG segment);
74
75	LONG WIN32API UnhandledExceptionFilter(PWINEXCEPTION_POINTERS lpexpExceptionInfo);
76	void KillWin32Process(void);
77
78
79	/*****************************************************************************
80	* Name : UINT SetErrorMode
81	* Purpose :
82	* Parameters: UINT fuErrorMode
83	* Variables :
84	* Result :
85	* Remark :
86	* Status :
87	*
88	* Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
89	*****************************************************************************/
90
91	UINT WIN32API SetErrorMode(UINT fuErrorMode)
92	{
93	UINT oldmode = CurrentErrorMode;
94
95	dprintf(("KERNEL32: SetErrorMode(%08xh)\n",
96	fuErrorMode));
97	CurrentErrorMode = fuErrorMode;
98
99	if(fuErrorMode & SEM_FAILCRITICALERRORS \|\| fuErrorMode & SEM_NOOPENFILEERRORBOX)
100	DosError(FERR_DISABLEHARDERR);
101	else
102	DosError(FERR_ENABLEHARDERR);
103
104	// SEM_NOGPFAULTERRORBOX and SEM_NOALIGNMENTFAULTEXCEPT --> UnhandledExceptionFilter()
105
106	return(oldmode);
107	}
108
109	/*****************************************************************************
110	* Name : VOID _Pascal OS2RaiseException
111	* Purpose : Unwinds exception handlers (heavily influenced by Wine)
112	* Parameters: ...
113	* Variables :
114	* Result :
115	* Remark :
116	* Status :
117	*
118	* Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
119	*****************************************************************************/
120
121	void WIN32API RtlRaiseException(WINEXCEPTION_RECORD rec, WINCONTEXT context);
122
123	VOID _Pascal OS2RaiseException(DWORD dwExceptionCode,
124	DWORD dwExceptionFlags,
125	DWORD cArguments,
126	DWORD *lpArguments,
127	DWORD eip, DWORD esp, DWORD ebp, DWORD flags,
128	DWORD eax, DWORD ebx, DWORD ecx, DWORD edx,
129	DWORD edi, DWORD esi, DWORD cs, DWORD ds,
130	DWORD es, DWORD fs, DWORD gs, DWORD ss)
131	{
132	WINEXCEPTION_RECORD record;
133	WINEXCEPTION_POINTERS ExceptionInfo;
134	WINCONTEXT context;
135	int rc;
136	int i;
137
138	dprintf(("KERNEL32: RaiseException(%08xh)\n",
139	dwExceptionCode));
140
141	/* compose an exception record */
142	record.ExceptionCode = dwExceptionCode;
143	record.ExceptionFlags = dwExceptionFlags;
144	record.ExceptionRecord = NULL;
145	record.NumberParameters = cArguments;
146	record.ExceptionAddress = (LPVOID)eip;
147
148	memset(&context, 0, sizeof(context));
149	context.ContextFlags = WINCONTEXT_FULL; //segments, integer, control
150	context.SegGs = gs;
151	context.SegFs = fs;
152	context.SegEs = es;
153	context.SegDs = ds;
154	context.Edi = edi;
155	context.Esi = esi;
156	context.Ebx = ebx;
157	context.Edx = edx;
158	context.Ecx = ecx;
159	context.Eax = eax;
160	context.Ebp = ebp;
161	context.Eip = eip;
162	context.SegCs = cs;
163	context.EFlags = flags;
164	context.Esp = esp;
165	context.SegSs = ss;
166
167	if(lpArguments)
168	{
169	for(i=0;
170	i<cArguments;
171	i++)
172	record.ExceptionInformation[i] = lpArguments[i];
173	}
174
175	rc = RtlDispatchException(&record, &context);
176
177	// and finally, the unhandled exception filter
178	if(rc == ExceptionContinueSearch && UnhandledExceptionFilter != NULL)
179	{
180	ExceptionInfo.ExceptionRecord = &record;
181	ExceptionInfo.ContextRecord = &context;
182
183	rc = UnhandledExceptionFilter(&ExceptionInfo);
184	}
185
186	// terminate the process
187	if(rc != ExceptionContinueExecution \|\|
188	record.ExceptionFlags & EH_NONCONTINUABLE)
189	{
190	dprintf(("KERNEL32: RaiseException terminating process.\n"));
191	DosExit(EXIT_PROCESS, 0);
192	}
193
194	return;
195	}
196	//******************************************************************************
197	//******************************************************************************
198	DWORD RtlDispatchException(WINEXCEPTION_RECORD pRecord, WINCONTEXT pContext)
199	{
200	PWINEXCEPTION_FRAME pframe, dispatch, nested_frame;
201	int rc;
202
203	// get chain of exception frames
204	rc = ExceptionContinueSearch;
205
206	nested_frame = NULL;
207	TEB *winteb = GetThreadTEB();
208	pframe = (PWINEXCEPTION_FRAME)winteb->except;
209
210	// walk the exception chain
211	while( (pframe != NULL) && (pframe != ((void *)0xFFFFFFFF)) )
212	{
213	dispatch=0;
214
215	dprintf(("Calling exception handler %x", pframe->Handler));
216	/* Check frame address */
217	if (((void*)pframe < winteb->stack_low) \|\|
218	((void*)(pframe+1) > winteb->stack_top) \|\|
219	(int)pframe & 3)
220	{
221	pRecord->ExceptionFlags \|= EH_STACK_INVALID;
222	break;
223	}
224
225	rc = pframe->Handler(pRecord,
226	pframe,
227	pContext,
228	dispatch);
229
230	if (pframe == nested_frame)
231	{
232	/* no longer nested */
233	nested_frame = NULL;
234	pRecord->ExceptionFlags &= ~EH_NESTED_CALL;
235	}
236
237	dprintf(("exception handler returned %x", rc));
238
239	switch(rc)
240	{
241	case ExceptionContinueExecution:
242	if (!(pRecord->ExceptionFlags & EH_NONCONTINUABLE)) return rc;
243	break;
244	case ExceptionContinueSearch:
245	break;
246	case ExceptionNestedException:
247	if (nested_frame < dispatch) nested_frame = dispatch;
248	pRecord->ExceptionFlags \|= EH_NESTED_CALL;
249	break;
250	default:
251	break;
252	}
253
254	pframe = pframe->Prev;
255	}
256	return rc;
257	}
258	/*****************************************************************************
259	* Name : int _Pascal OS2RtlUnwind
260	* Purpose : Unwinds exception handlers (heavily influenced by Wine)
261	* Parameters: ...
262	* Variables :
263	* Result :
264	* Remark :
265	* Status :
266	*
267	* Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
268	*****************************************************************************/
269
270	int _Pascal OS2RtlUnwind(PWINEXCEPTION_FRAME pEndFrame,
271	LPVOID unusedEip,
272	PWINEXCEPTION_RECORD pRecord,
273	DWORD returnEax,
274	DWORD eip, DWORD esp, DWORD ebp, DWORD flags,
275	DWORD eax, DWORD ebx, DWORD ecx, DWORD edx,
276	DWORD edi, DWORD esi, DWORD cs, DWORD ds,
277	DWORD es, DWORD fs, DWORD gs, DWORD ss)
278	{
279	PWINEXCEPTION_FRAME frame, dispatch;
280	WINEXCEPTION_RECORD record, newrec;
281	WINCONTEXT context;
282	int rc;
283
284	dprintf(("KERNEL32: RtlUnwind %x %x\n", pEndFrame, pRecord));
285
286	memset(&context, 0, sizeof(context));
287	context.ContextFlags = WINCONTEXT_FULL; //segments, integer, control
288	context.SegGs = gs;
289	context.SegFs = fs;
290	context.SegEs = es;
291	context.SegDs = ds;
292	context.Edi = edi;
293	context.Esi = esi;
294	context.Ebx = ebx;
295	context.Edx = edx;
296	context.Ecx = ecx;
297	context.Eax = returnEax;
298	context.Ebp = ebp;
299	context.Eip = eip;
300	context.SegCs = cs;
301	context.EFlags = flags;
302	context.Esp = esp;
303	context.SegSs = ss;
304
305	/* build an exception record, if we do not have one */
306	if(!pRecord)
307	{
308	record.ExceptionCode = STATUS_INVALID_DISPOSITION;
309	record.ExceptionFlags = 0;
310	record.ExceptionRecord = NULL;
311	record.ExceptionAddress = (LPVOID)eip;
312	record.NumberParameters = 0;
313	pRecord = &record;
314	}
315
316	if(pEndFrame) pRecord->ExceptionFlags \|= EH_UNWINDING;
317	else pRecord->ExceptionFlags \|= EH_UNWINDING \| EH_EXIT_UNWIND;
318
319	/* get chain of exception frames */
320	TEB *winteb = GetThreadTEB();
321	frame = (PWINEXCEPTION_FRAME)winteb->except;
322
323	while ((frame != (PWINEXCEPTION_FRAME)0xffffffff) && (frame != pEndFrame))
324	{
325	/* Check frame address */
326	if (pEndFrame && (frame > pEndFrame))
327	{
328	newrec.ExceptionCode = STATUS_INVALID_UNWIND_TARGET;
329	newrec.ExceptionFlags = EH_NONCONTINUABLE;
330	newrec.ExceptionRecord = pRecord;
331	newrec.NumberParameters = 0;
332	dprintf(("KERNEL32: RtlUnwind terminating thread.\n"));
333	DosExit(EXIT_THREAD, 0);
334	}
335	if (((void*)frame < winteb->stack_low) \|\|
336	((void*)(frame+1) > winteb->stack_top) \|\|
337	(int)frame & 3)
338	{
339	newrec.ExceptionCode = STATUS_BAD_STACK;
340	newrec.ExceptionFlags = EH_NONCONTINUABLE;
341	newrec.ExceptionRecord = pRecord;
342	newrec.NumberParameters = 0;
343	dprintf(("KERNEL32: RtlUnwind terminating thread.\n"));
344	DosExit(EXIT_THREAD, 0);
345	}
346
347	/* Call handler */
348	dprintf(("Calling exception handler %x", frame->Handler));
349	switch(frame->Handler(pRecord, frame, &context, &dispatch ))
350	{
351	case ExceptionContinueSearch:
352	break;
353	case ExceptionCollidedUnwind:
354	frame = dispatch;
355	break;
356	default:
357	newrec.ExceptionCode = STATUS_INVALID_DISPOSITION;
358	newrec.ExceptionFlags = EH_NONCONTINUABLE;
359	newrec.ExceptionRecord = pRecord;
360	newrec.NumberParameters = 0;
361	dprintf(("KERNEL32: RtlUnwind terminating thread.\n"));
362	DosExit(EXIT_THREAD, 0);
363	break;
364	}
365	SetExceptionChain((DWORD)frame->Prev);
366	frame = frame->Prev;
367	}
368	return(0);
369	}
370
371
372	/*****************************************************************************
373	* Name : LONG WIN32API UnhandledExceptionFilter
374	* Purpose :
375	* Parameters: ...
376	* Variables :
377	* Result :
378	* Remark :
379	* Status :
380	*
381	* Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
382	*****************************************************************************/
383
384	LONG WIN32API UnhandledExceptionFilter(PWINEXCEPTION_POINTERS lpexpExceptionInfo)
385	{
386	char message[72];
387	DWORD rc;
388
389	// @@@PH: experimental change to have more control over exception handling
390	#pragma pack(4)
391	typedef struct
392	{
393	ULONG cb; /* Size of fixed part of structure */
394	HPOINTER hIcon; /* Icon handle */
395	ULONG cButtons; /* Number of buttons */
396	ULONG flStyle; /* Icon style flags (MB_ICONQUESTION, etc...)*/
397	HWND hwndNotify; /* Reserved */
398	MB2D mb2d[4]; /* Array of button definitions */
399	} myMB2INFO;
400	#pragma pack()
401
402	myMB2INFO mb2InfoExceptionBox = { 20, // size of structure
403	NULLHANDLE, // icon handle
404	4, // number of buttons
405	MB_ICONHAND, // icon style
406	NULLHANDLE, // reserved
407	{ {"continue ~search", 100, BS_PUSHBUTTON \| BS_TEXT \| BS_AUTOSIZE},
408	{"continue ~execution", 101, BS_PUSHBUTTON \| BS_TEXT \| BS_AUTOSIZE},
409	{"execute ~handler", 102, BS_PUSHBUTTON \| BS_TEXT \| BS_AUTOSIZE \| BS_DEFAULT},
410	{"~terminate process", 103, BS_PUSHBUTTON \| BS_TEXT \| BS_AUTOSIZE} }
411	};
412
413	dprintf(("KERNEL32: UnhandledExceptionFilter\n"));
414
415	if(CurrentUnhExceptionFlt && !(CurrentErrorMode & (SEM_FAILCRITICALERRORS \| SEM_NOGPFAULTERRORBOX)))
416	{
417	rc = CurrentUnhExceptionFlt(lpexpExceptionInfo);
418	if(rc != WINEXCEPTION_CONTINUE_SEARCH)
419	return rc;
420	}
421
422	sprintf(message,
423	"Unhandled exception 0x%08lx at address 0x%08lx.",
424	lpexpExceptionInfo->ExceptionRecord->ExceptionCode,
425	lpexpExceptionInfo->ExceptionRecord->ExceptionAddress);
426	/*
427	rc = WinMessageBox2(HWND_DESKTOP,
428	HWND_DESKTOP,
429	message,
430	"Oh, nooo!",
431	0,
432	(PMB2INFO)&mb2InfoExceptionBox);
433	switch (rc)
434	{
435	case 100:
436	return WINEXCEPTION_CONTINUE_SEARCH;
437
438	case 101:
439	return WINEXCEPTION_CONTINUE_EXECUTION;
440
441	case 102:
442	return WINEXCEPTION_EXECUTE_HANDLER;
443
444	case 103:
445	KillWin32Process();
446	// fall-through
447
448	default:
449	return WINEXCEPTION_EXECUTE_HANDLER;
450	}
451	*/
452	rc = WinMessageBox(HWND_DESKTOP,
453	HWND_DESKTOP,
454	message,
455	"Oh, nooo!",
456	0,
457	MB_ABORTRETRYIGNORE \| MB_ERROR);
458	switch (rc)
459	{
460	case MBID_IGNORE:
461	return WINEXCEPTION_CONTINUE_EXECUTION;
462
463	case MBID_ABORT:
464	KillWin32Process();
465	// fall-through
466
467	case MBID_RETRY:
468	default:
469	return WINEXCEPTION_EXECUTE_HANDLER;
470	}
471	}
472
473
474	/*****************************************************************************
475	* Name : LPTOP_LEVEL_EXCEPTION_FILTER WIN32API SetUnhandledExceptionFilter
476	* Purpose :
477	* Parameters: ...
478	* Variables :
479	* Result :
480	* Remark :
481	* Status :
482	*
483	* Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
484	*****************************************************************************/
485
486	LPTOP_LEVEL_EXCEPTION_FILTER WIN32API SetUnhandledExceptionFilter(LPTOP_LEVEL_EXCEPTION_FILTER lpTopLevelExceptionFilter)
487	{
488	LPTOP_LEVEL_EXCEPTION_FILTER old = CurrentUnhExceptionFlt;
489
490	dprintf(("KERNEL32: SetUnhandledExceptionFilter to %X\n",
491	lpTopLevelExceptionFilter));
492
493	CurrentUnhExceptionFlt = lpTopLevelExceptionFilter;
494
495	return(old);
496	}
497
498
499	/*****************************************************************************
500	* Name : KillWin32Process
501	* Purpose :
502	* Parameters: ...
503	* Variables :
504	* Result :
505	* Remark :
506	* Status :
507	*
508	* Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
509	*****************************************************************************/
510
511
512	//******************************************************************************
513	extern "C" ULONG getEAX();
514	extern "C" ULONG getEBX();
515	//******************************************************************************
516	void KillWin32Process(void)
517	{
518	char excptmsg[64];
519	ULONG excptaddr, excptnr;
520
521	excptnr = getEAX();
522	excptaddr = getEBX();
523
524	//Restore original OS/2 TIB selector
525	RestoreOS2FS();
526
527	SetExceptionChain((ULONG)-1);
528	DosExit(EXIT_PROCESS, 666);
529	}
530
531
532	//******************************************************************************
533	APIRET APIENTRY DosQueryModFromEIP (PULONG pulModule,
534	PULONG pulObject,
535	ULONG ulBufferLength,
536	PSZ pszBuffer,
537	PULONG pulOffset,
538	ULONG ulEIP);
539	//******************************************************************************
540
541
542	/*****************************************************************************
543	* Name : void static dprintfException
544	* Purpose : log the exception to win32os2.log
545	* Parameters: ...
546	* Variables :
547	* Result :
548	* Remark :
549	* Status :
550	*
551	* Author : Patrick Haller [Tue, 1999/07/01 09:00]
552	*****************************************************************************/
553
554	void static dprintfException(PEXCEPTIONREPORTRECORD pERepRec,
555	PEXCEPTIONREGISTRATIONRECORD pERegRec,
556	PCONTEXTRECORD pCtxRec,
557	PVOID p)
558	{
559	PSZ pszExceptionName = "<unknown>"; /* points to name/type excpt */
560	char szData[128]; /* local storage for excpt dep. information */
561	char szData2[128]; /* local storage for excpt dep. information */
562	APIRET rc = XCPT_CONTINUE_SEARCH; /* excpt-dep. code */
563	BOOL fExcptSoftware = FALSE; /* software/hardware gen. exceptn */
564	BOOL fExcptFatal = TRUE; /* fatal exception ? */
565	BOOL fExcptPortable = TRUE; /* portability of exception */
566	PPIB pPIB; /* process information block */
567	PTIB pTIB; /* thread information block */
568	ULONG ulModule; /* module number */
569	ULONG ulObject; /* object number within the module */
570	CHAR szModule[260]; /* buffer for the module name */
571	ULONG ulOffset; /* offset within the object within the module */
572
573	szData[0] = 0; /* initialize */
574	szData2[0] = 0; /* initialize */
575	switch(pERepRec->ExceptionNum) /* take according action */
576	{
577	/* portable, non-fatal software-generated exceptions */
578	case XCPT_GUARD_PAGE_VIOLATION:
579	pszExceptionName = "Guard Page Violation";
580	sprintf(szData,
581	"R/W %08xh at %08xh.",
582	pERepRec->ExceptionInfo[0],
583	pERepRec->ExceptionInfo[1]);
584	fExcptSoftware = TRUE;
585	fExcptFatal = FALSE;
586	rc = XCPT_CONTINUE_EXECUTION;
587	break;
588
589	case XCPT_UNABLE_TO_GROW_STACK:
590	pszExceptionName = "Unable To Grow Stack";
591	fExcptSoftware = TRUE;
592	fExcptFatal = FALSE;
593	rc = XCPT_CONTINUE_EXECUTION;
594	break;
595
596	/* portable, fatal, hardware-generated exceptions */
597	case XCPT_ACCESS_VIOLATION:
598	pszExceptionName = "Access Violation";
599	/* sprintf (szData, "Access type %08x at %08x.", pERepRec->ExceptionInfo[0],
600	pERepRec->ExceptionInfo[1]); */
601	switch (pERepRec->ExceptionInfo[0])
602	{
603	case XCPT_READ_ACCESS:
604	sprintf (szData,
605	"Read Access at address %08xh",
606	pERepRec->ExceptionInfo[1]);
607	break;
608
609	case XCPT_WRITE_ACCESS:
610	sprintf (szData,
611	"Write Access at address %08x",
612	pERepRec->ExceptionInfo[1]);
613	break;
614
615	case XCPT_SPACE_ACCESS:
616	sprintf (szData,
617	"Space Access at selector %08x",
618	pERepRec->ExceptionInfo[1]);
619	break;
620
621	case XCPT_LIMIT_ACCESS:
622	strcpy (szData,
623	"Limit Access");
624	break;
625
626	case XCPT_UNKNOWN_ACCESS:
627	strcpy (szData,
628	"Unknown Access");
629	break;
630
631	default:
632	strcpy (szData,
633	"(Invalid Access Code)");
634	break;
635	}
636	break;
637
638	case XCPT_INTEGER_DIVIDE_BY_ZERO:
639	pszExceptionName = "Division By Zero (Integer)";
640	break;
641
642	case XCPT_FLOAT_DIVIDE_BY_ZERO:
643	pszExceptionName = "Division By Zero (Float)";
644	break;
645
646	case XCPT_FLOAT_INVALID_OPERATION:
647	pszExceptionName = "Invalid Floating Point Operation";
648	break;
649
650	case XCPT_ILLEGAL_INSTRUCTION:
651	pszExceptionName = "Illegal Instruction";
652	break;
653
654	case XCPT_PRIVILEGED_INSTRUCTION:
655	pszExceptionName = "Privileged Instruction";
656	break;
657
658	case XCPT_INTEGER_OVERFLOW:
659	pszExceptionName = "Integer Overflow";
660	break;
661
662	case XCPT_FLOAT_OVERFLOW:
663	pszExceptionName = "Floating Point Overflow";
664	break;
665
666	case XCPT_FLOAT_UNDERFLOW:
667	pszExceptionName = "Floating Point Underflow";
668	break;
669
670	case XCPT_FLOAT_DENORMAL_OPERAND:
671	pszExceptionName = "Floating Point Denormal Operand";
672	break;
673
674	case XCPT_FLOAT_INEXACT_RESULT:
675	pszExceptionName = "Floating Point Inexact Result";
676	break;
677
678	case XCPT_FLOAT_STACK_CHECK:
679	pszExceptionName = "Floating Point Stack Check";
680	break;
681
682	case XCPT_DATATYPE_MISALIGNMENT:
683	pszExceptionName = "Datatype Misalignment";
684	sprintf(szData,
685	"R/W %08x alignment %08x at %08x.",
686	pERepRec->ExceptionInfo[0],
687	pERepRec->ExceptionInfo[1],
688	pERepRec->ExceptionInfo[2]);
689	break;
690
691	case XCPT_BREAKPOINT:
692	pszExceptionName = "Breakpoint (don't debug me! :)";
693	break;
694
695	case XCPT_SINGLE_STEP:
696	pszExceptionName = "Single Step (don't debug me! :)";
697	break;
698
699	/* portable, fatal, software-generated exceptions */
700	case XCPT_IN_PAGE_ERROR:
701	pszExceptionName = "In Page Error";
702	sprintf(szData,
703	"at %08x.",
704	pERepRec->ExceptionInfo[0]);
705	fExcptSoftware = TRUE;
706	break;
707
708	case XCPT_PROCESS_TERMINATE:
709	pszExceptionName = "Process Termination";
710	fExcptSoftware = TRUE;
711	break;
712
713	case XCPT_ASYNC_PROCESS_TERMINATE:
714	pszExceptionName = "Process Termination (async)";
715	sprintf(szData,
716	"terminating thread TID=%u",
717	pERepRec->ExceptionInfo[0]);
718	fExcptSoftware = TRUE;
719	break;
720
721	case XCPT_NONCONTINUABLE_EXCEPTION:
722	pszExceptionName = "Noncontinuable Exception";
723	fExcptSoftware = TRUE;
724	break;
725
726	case XCPT_INVALID_DISPOSITION:
727	pszExceptionName = "Invalid Disposition";
728	fExcptSoftware = TRUE;
729	break;
730
731	/* non-portable, fatal exceptions */
732	case XCPT_INVALID_LOCK_SEQUENCE:
733	pszExceptionName = "Invalid Lock Sequence";
734	fExcptSoftware = TRUE;
735	fExcptPortable = FALSE;
736	break;
737
738	case XCPT_ARRAY_BOUNDS_EXCEEDED:
739	pszExceptionName = "Array Bounds Exceeded";
740	fExcptSoftware = TRUE;
741	fExcptPortable = FALSE;
742	break;
743
744	/* unwind operation exceptions */
745	case XCPT_UNWIND:
746	pszExceptionName = "Unwind Exception";
747	fExcptSoftware = TRUE;
748	fExcptPortable = FALSE;
749	break;
750
751	case XCPT_BAD_STACK:
752	pszExceptionName = "Unwind Exception, Bad Stack";
753	fExcptSoftware = TRUE;
754	fExcptPortable = FALSE;
755	break;
756
757	case XCPT_INVALID_UNWIND_TARGET:
758	pszExceptionName = "Unwind Exception, Invalid Target";
759	fExcptSoftware = TRUE;
760	fExcptPortable = FALSE;
761	break;
762
763	/* fatal signal exceptions */
764	case XCPT_SIGNAL:
765	pszExceptionName = "Signal";
766	sprintf(szData,
767	"Signal Number = %08x",
768	pERepRec->ExceptionInfo[0]);
769	fExcptSoftware = TRUE;
770	fExcptPortable = FALSE;
771
772	switch (pERepRec->ExceptionInfo[0]) /* resolve signal information */
773	{
774	case XCPT_SIGNAL_INTR:
775	pszExceptionName = "Signal (Interrupt)";
776	break;
777
778	case XCPT_SIGNAL_KILLPROC:
779	pszExceptionName = "Signal (Kill Process)";
780	break;
781
782	case XCPT_SIGNAL_BREAK:
783	pszExceptionName = "Signal (Break)";
784	break;
785	}
786	break;
787
788	default:
789	pszExceptionName = "(unknown exception code)";
790	sprintf(szData,
791	"Exception Code = %08x",
792	pERepRec->ExceptionNum);
793	}
794
795
796	/* now dump the information to the logfile */
797	dprintf(("---[Exception Information]------------\n"));
798	sprintf(szData2,
799	" %s (",
800	pszExceptionName);
801
802	if (fExcptSoftware == TRUE) /* software or hardware generated ? */
803	strcat (szData2, "software generated,");
804	else
805	strcat (szData2, "hardware generated,");
806
807	if (fExcptPortable == TRUE) /* portable exception ? */
808	strcat (szData2, "portable,");
809	else
810	strcat (szData2, "non-portable,");
811
812	if (fExcptFatal == TRUE) /* fatal exception ? */
813	strcat (szData2, "fatal");
814	else
815	strcat (szData2, "non-fatal");
816
817	strcat (szData2, /* add trailing brace */
818	")\n");
819
820
821	dprintf((szData2));
822
823	if (szData[0] != 0) /* see if there is an additional entry */
824	dprintf((" %s\n",
825	szData));
826
827	rc = DosQueryModFromEIP(&ulModule,
828	&ulObject,
829	sizeof(szModule),
830	szModule,
831	&ulOffset,
832	(ULONG)pERepRec->ExceptionAddress);
833
834	dprintf((" Exception Address = %08x ",
835	pERepRec->ExceptionAddress));
836
837	if (rc == NO_ERROR)
838	dprintf(("%s (#%u), obj #%u:%08x\n",
839	szModule,
840	ulModule,
841	ulObject,
842	ulOffset));
843	else
844	dprintf(("\n"));
845
846
847	rc = DosGetInfoBlocks (&pTIB, /* query kernel information blocks */
848	&pPIB);
849	if (rc == NO_ERROR)
850	{
851	dprintf((" Thread: Ordinal TID: %u, TID: %u, Priority: %04xh\n",
852	pTIB->tib_ordinal,
853	pTIB->tib_ptib2->tib2_ultid,
854	pTIB->tib_ptib2->tib2_ulpri));
855
856	dprintf((" Process: PID: %u, Parent: %u, Status: %u\n",
857	pPIB->pib_ulpid,
858	pPIB->pib_ulppid,
859	pPIB->pib_flstatus));
860	}
861
862	if (pCtxRec->ContextFlags & CONTEXT_CONTROL) /* check flags */
863	dprintf((" SS:ESP=%04x:%08x EFLAGS=%08x\n"
864	" CS:EIP=%04x:%08x EBP =%08x\n",
865	pCtxRec->ctx_SegSs,
866	pCtxRec->ctx_RegEsp,
867	pCtxRec->ctx_EFlags,
868	pCtxRec->ctx_SegCs,
869	pCtxRec->ctx_RegEip,
870	pCtxRec->ctx_RegEbp));
871
872	if (pCtxRec->ContextFlags & CONTEXT_INTEGER) /* check flags */
873	dprintf((" EAX=%08x EBX=%08x ESI=%08x\n"
874	" ECX=%08x EDX=%08x EDI=%08x\n",
875	pCtxRec->ctx_RegEax,
876	pCtxRec->ctx_RegEbx,
877	pCtxRec->ctx_RegEsi,
878	pCtxRec->ctx_RegEcx,
879	pCtxRec->ctx_RegEdx,
880	pCtxRec->ctx_RegEdi));
881
882	if (pCtxRec->ContextFlags & CONTEXT_SEGMENTS) /* check flags */
883	dprintf((" DS=%04x ES=%08x"
884	" FS=%04x GS=%04x\n",
885	pCtxRec->ctx_SegDs,
886	pCtxRec->ctx_SegEs,
887	pCtxRec->ctx_SegFs,
888	pCtxRec->ctx_SegGs));
889
890	if (pCtxRec->ContextFlags & CONTEXT_FLOATING_POINT) /* check flags */
891	{
892	ULONG ulCounter; /* temporary local counter for fp stack */
893
894	dprintf((" Env[0]=%08x Env[1]=%08x Env[2]=%08x Env[3]=%08x\n",
895	pCtxRec->ctx_env[0],
896	pCtxRec->ctx_env[1],
897	pCtxRec->ctx_env[2],
898	pCtxRec->ctx_env[3]));
899
900	dprintf((" Env[4]=%08x Env[5]=%08x Env[6]=%08x\n",
901	pCtxRec->ctx_env[4],
902	pCtxRec->ctx_env[5],
903	pCtxRec->ctx_env[6]));
904
905	for (ulCounter = 0;
906	ulCounter < 8; /* see TOOLKIT\INCLUDE\BSEEXPT.H, _CONTEXT structure */
907	ulCounter ++)
908	dprintf((" FP-Stack[%u] losig=%08x hisig=%08x signexp=%04x\n",
909	ulCounter,
910	pCtxRec->ctx_stack[0].losig,
911	pCtxRec->ctx_stack[0].hisig,
912	pCtxRec->ctx_stack[0].signexp));
913	}
914
915	dprintf(("---[End Of Exception Information]-----\n"));
916	}
917
918
919	/*****************************************************************************
920	* Name : ERR _System OS2ExceptionHandler
921	* Purpose :
922	* Parameters: ...
923	* Variables :
924	* Result :
925	* Remark :
926	* Status :
927	*
928	* Author : Patrick Haller [Tue, 1999/07/01 09:00]
929	*****************************************************************************/
930	/* from PPC DDK */
931	#ifndef XCPT_CONTINUE_STOP
932	#define XCPT_CONTINUE_STOP 0x00716668
933	#endif
934
935	ULONG APIENTRY OS2ExceptionHandler(PEXCEPTIONREPORTRECORD pERepRec,
936	PEXCEPTIONREGISTRATIONRECORD pERegRec,
937	PCONTEXTRECORD pCtxRec,
938	PVOID p)
939	{
940	/* Access violation at a known location */
941	switch(pERepRec->ExceptionNum)
942	{
943	case XCPT_FLOAT_DENORMAL_OPERAND:
944	case XCPT_FLOAT_DIVIDE_BY_ZERO:
945	case XCPT_FLOAT_INEXACT_RESULT:
946	// case XCPT_FLOAT_INVALID_OPERATION:
947	case XCPT_FLOAT_OVERFLOW:
948	case XCPT_FLOAT_STACK_CHECK:
949	case XCPT_FLOAT_UNDERFLOW:
950	dprintfException(pERepRec, pERegRec, pCtxRec, p);
951	dprintf(("KERNEL32: OS2ExceptionHandler: FPU exception\n"));
952	if(fIsOS2Image == FALSE) //Only for real win32 apps
953	{
954	if(OSLibDispatchException(pERepRec, pERegRec, pCtxRec, p) == FALSE)
955	{
956	pCtxRec->ctx_env[0] \|= 0x1F;
957	pCtxRec->ctx_stack[0].losig = 0;
958	pCtxRec->ctx_stack[0].hisig = 0;
959	pCtxRec->ctx_stack[0].signexp = 0;
960	}
961	dprintf(("KERNEL32: OS2ExceptionHandler: fix and continue\n"));
962	return (XCPT_CONTINUE_EXECUTION);
963	}
964	else
965	{
966	dprintf(("KERNEL32: OS2ExceptionHandler: continue search\n"));
967	return (XCPT_CONTINUE_SEARCH);
968	}
969
970	case XCPT_PROCESS_TERMINATE:
971	case XCPT_ASYNC_PROCESS_TERMINATE:
972	dprintfException(pERepRec, pERegRec, pCtxRec, p);
973	SetExceptionChain((ULONG)-1);
974	return (XCPT_CONTINUE_SEARCH);
975
976	case XCPT_ACCESS_VIOLATION:
977	{
978	Win32MemMap *map;
979	BOOL fWriteAccess = FALSE;
980	ULONG offset, accessflag;
981
982	if(pERepRec->ExceptionInfo[1] == 0 && pERepRec->ExceptionInfo[1] == XCPT_DATA_UNKNOWN) {
983	goto continueFail;
984	}
985	switch(pERepRec->ExceptionInfo[0]) {
986	case XCPT_READ_ACCESS:
987	accessflag = MEMMAP_ACCESS_READ;
988	break;
989	case XCPT_WRITE_ACCESS:
990	accessflag = MEMMAP_ACCESS_WRITE;
991	fWriteAccess = TRUE;
992	break;
993	case XCPT_EXECUTE_ACCESS:
994	accessflag = MEMMAP_ACCESS_EXECUTE;
995	break;
996	default:
997	goto continueFail;
998	}
999
1000	map = Win32MemMapView::findMapByView(pERepRec->ExceptionInfo[1], &offset, accessflag);
1001	if(map == NULL) {
1002	goto continueFail;
1003	}
1004	if(map->commitPage(offset, fWriteAccess) == TRUE)
1005	return (XCPT_CONTINUE_EXECUTION);
1006
1007	//no break;
1008	}
1009	continueFail:
1010
1011	case XCPT_BREAKPOINT:
1012	case XCPT_ARRAY_BOUNDS_EXCEEDED:
1013	case XCPT_DATATYPE_MISALIGNMENT:
1014	case XCPT_ILLEGAL_INSTRUCTION:
1015	case XCPT_PRIVILEGED_INSTRUCTION:
1016	case XCPT_INVALID_LOCK_SEQUENCE:
1017	case XCPT_INTEGER_DIVIDE_BY_ZERO:
1018	case XCPT_INTEGER_OVERFLOW:
1019	case XCPT_SINGLE_STEP:
1020	case XCPT_UNABLE_TO_GROW_STACK:
1021	case XCPT_IN_PAGE_ERROR:
1022	CrashAndBurn:
1023	dprintfException(pERepRec, pERegRec, pCtxRec, p);
1024	if(fIsOS2Image == FALSE) //Only for real win32 apps
1025	{
1026	if(OSLibDispatchException(pERepRec, pERegRec, pCtxRec, p) == TRUE)
1027	{
1028	return (XCPT_CONTINUE_EXECUTION);
1029	}
1030	}
1031	else return XCPT_CONTINUE_SEARCH; //pass on to OS/2 RTL or app exception handler
1032
1033	dprintf(("KERNEL32: OS2ExceptionHandler: Continue and kill\n"));
1034	pCtxRec->ctx_RegEip = (ULONG)KillWin32Process;
1035	pCtxRec->ctx_RegEsp = pCtxRec->ctx_RegEsp + 0x10;
1036	pCtxRec->ctx_RegEax = pERepRec->ExceptionNum;
1037	pCtxRec->ctx_RegEbx = pCtxRec->ctx_RegEip;
1038	return (XCPT_CONTINUE_EXECUTION);
1039
1040	//@@@PH: growing thread stacks might need special treatment
1041	case XCPT_GUARD_PAGE_VIOLATION:
1042	dprintf(("KERNEL32: OS2ExceptionHandler: trying to grow stack (continue)\n"));
1043	return (XCPT_CONTINUE_SEARCH);
1044
1045	case XCPT_SIGNAL:
1046	if(pERepRec->ExceptionInfo[0] == XCPT_SIGNAL_KILLPROC) /* resolve signal information */
1047	{
1048	SetExceptionChain((ULONG)-1);
1049	return (XCPT_CONTINUE_SEARCH);
1050	}
1051	goto CrashAndBurn;
1052
1053	default: //non-continuable exceptions
1054	dprintfException(pERepRec, pERegRec, pCtxRec, p);
1055	return (XCPT_CONTINUE_SEARCH);
1056	}
1057	return (XCPT_CONTINUE_SEARCH);
1058	}
1059
1060	/*****************************************************************************
1061	* Name : void OS2SetExceptionHandler
1062	* Purpose : Sets the main thread exception handler in FS:[0] (original OS/2 FS selector)
1063	* Parameters: exceptframe: pointer to exception handler frame on stack (2 ULONGs)
1064	* Variables :
1065	* Result :
1066	* Remark :
1067	* Status :
1068	*
1069	* Author : Sander van Leeuwen [Sun, 1999/08/21 12:16]
1070	*****************************************************************************/
1071	void OS2SetExceptionHandler(void *exceptframe)
1072	{
1073	PEXCEPTIONREGISTRATIONRECORD pExceptRec = (PEXCEPTIONREGISTRATIONRECORD)exceptframe;
1074
1075	pExceptRec->prev_structure = (PEXCEPTIONREGISTRATIONRECORD)-1;
1076	pExceptRec->ExceptionHandler = OS2ExceptionHandler;
1077
1078	/* disable trap popups */
1079	// DosError(FERR_DISABLEEXCEPTION \| FERR_DISABLEHARDERR);
1080
1081	DosSetExceptionHandler(pExceptRec);
1082	dprintf(("OS2SetExceptionHandler: exception chain %x (old %x)", pExceptRec, pExceptRec->prev_structure));
1083	}
1084
1085	/*****************************************************************************
1086	* Name : void OS2UnsetExceptionHandler
1087	* Purpose : Removes the main thread exception handler in FS:[0] (original OS/2 FS selector)
1088	* Parameters: exceptframe: pointer to exception handler frame on stack (2 ULONGs)
1089	* Variables :
1090	* Result :
1091	* Remark :
1092	* Status :
1093	*
1094	* Author : Sander van Leeuwen [Sun, 1999/08/21 12:16]
1095	*****************************************************************************/
1096	void OS2UnsetExceptionHandler(void *exceptframe)
1097	{
1098	DosUnsetExceptionHandler((PEXCEPTIONREGISTRATIONRECORD)exceptframe);
1099	}
1100
1101	void SetOS2ExceptionChain(ULONG val)
1102	{
1103	USHORT sel = GetFS();
1104
1105	SetExceptionChain(val);
1106	SetFS(sel);
1107	}
1108
1109	/*****************************************************************************
1110	* Name : void ReplaceExceptionHandler
1111	* Purpose :
1112	* Parameters: ...
1113	* Variables :
1114	* Result :
1115	* Remark :
1116	* Status :
1117	*
1118	* Author : Sander van Leeuwen [Tue, 1999/07/01 09:00]
1119	*****************************************************************************/
1120
1121	//******************************************************************************
1122	//SvL: Replace original startup code exception handler
1123	extern BOOL fExeStarted;
1124	//******************************************************************************
1125	void ReplaceExceptionHandler()
1126	{
1127	static BOOL fRegistered = FALSE;
1128	PWINEXCEPTION_FRAME orgframe;
1129	APIRET rc;
1130	ULONGULONG_W timerval;
1131
1132	DisableFPUExceptions();
1133
1134	if(fExeStarted == FALSE)
1135	return;
1136
1137	orgframe = (PWINEXCEPTION_FRAME)QueryExceptionChain();
1138	if((int)orgframe == 0 \|\|
1139	(int)orgframe == -1)
1140	return;
1141
1142	dprintf(("KERNEL32: ReplaceExceptionHandler\n"));
1143
1144	StartupCodeHandler = orgframe->Handler;
1145	orgframe->Handler = (PEXCEPTION_HANDLER)OS2ExceptionHandler;
1146	orgframe->Prev = (_WINEXCEPTION_FRAME *)0;
1147	SetExceptionChain((ULONG)-1);
1148
1149	#if 0
1150	if(fRegistered == FALSE)
1151	{
1152	#endif
1153
1154	dprintf(("KERNEL32: ReplaceExceptionHandler: New exception frame at %X\n",
1155	orgframe));
1156	rc = DosSetExceptionHandler((PEXCEPTIONREGISTRATIONRECORD)orgframe);
1157	fRegistered = TRUE;
1158
1159	#if 0
1160	}
1161	else
1162	{
1163	while(orgframe && orgframe->Handler != (PEXCEPTION_HANDLER)OS2ExceptionHandler)
1164	{
1165	orgframe = orgframe->Prev;
1166	}
1167
1168	dprintf(("KERNEL32: ReplaceExceptionHandler: Restore old exception frame %X\n",
1169	orgframe));
1170	if(orgframe)
1171	{
1172	orgframe->Prev = (_WINEXCEPTION_FRAME *)0;
1173	SetExceptionChain((ULONG)orgframe);
1174	}
1175	}
1176	#endif
1177	}
1178

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