[Q]: Запись детальной информации об Exception'е

[A]: George Shapovalov (2:5020/341.26)

520 645│except3.zip

EXCEPTQ in a 32 bit DLL which implements an exception handler which saves the registers in a file named xxxx.TRP (xxxx=Pid,Tid) together with the Loaded modules code and data objects addresses, and also the failing thread stack dump and the process status as given by DosQProcStatus. Trapperq is an IBM C/2 program which shows how to implement the call to 32 bits exception handler from a 16:16 bits program. enter Trapperq to generate a trap and the xxxx.TRP file. You are free to use that code as a sample for your programs. No support or guarantee from me implied.

Cheers Marc Fiammante

  С трешкой работает, а с четверкой еще не собирал. Поищи на хоббесах или в

домейне в примерах. Если не найдешь, я тебе на емейл кину. Вот пример работы:

#pragma handler(main) #pragma map (_Exception,“MYHANDLER”)

#include <stdio.h> #include <stdlib.h>

void TrapFunc(void);

main(){

  printf("Exception handler has been set by compiler\n");
  printf("Generating the TRAP from function\n");
  TrapFunc();

} void TrapFunc() {

  char * Test;
  Test=0;
  *Test=0;

}

Вот пример трап-файла:

Exception C0000005 Occurred at 00:03:17 02/09/100 Invalid linear address 00000000

OS/2 Version 2.40 Failing code module internal name : SAMPLE Failing code module file name : E:\TEMP\SAMPLE.EXE Failing code Object # 1 at Offset 58

    File     Line#  Public Symbol
──────────── ────-  ────────────-
   SAMPLE.C     44  TrapFunc (sample.obj) 0001:00000048

List of auto variables at EBP 28854 in TrapFunc: Offset Name Type Value ────── ──────────────────── ───────────────────────────────── ───────────────── -4 Test near pointer to 8 bit unsigned 0x0 invalid

┌─────────────────────────────────────────────────────────────┐ │ GS : 0000 FS : 150B ES : 0053 DS : 0053 │ │ EDI : 00000000 ESI : 00000000 EAX : 00000000 EBX : 00000000 │ │ ECX : 00000000 EDX : 00000004 │ │ EBP : 00028854 EIP : 00010058 EFLG: 00012206 ESP : 00028850 │ │ CS : 005B SS : 0053 │ └─────────────────────────────────────────────────────────────┘

Failing instruction at CS:EIP : 005B:00010058 is mov [eax],00

┌────────────────────────────────────┐ │ Register content analysis │ ├────────────────────────────────────┤ │ EAX does not point to valid memory │ │ EBX does not point to valid memory │ │ ECX does not point to valid memory │ │ EDX does not point to valid memory │ │ EDI does not point to valid memory │ │ ESI does not point to valid memory │ └────────────────────────────────────┘

Thread slot 125 , Id 1 , priority 200 Stack Bottom : 000208A0 (0017:08A0) ;Stack Top : 000288A0 (0017:88A0) Process Id : 201 .EXE name : E:\TEMP\SAMPLE.EXE

Call Stack:

                                      Source    Line      Nearest
 EBP      Address    Module  Obj#      File     Numbr  Public Symbol

──────── ────────- ──────── ──── ──────────── ────- ────────────- Trap → 000F:0058 SAMPLE 0001 SAMPLE.C 44 TrapFunc (sample.obj) 0001:00000048

00028854 :00010035 SAMPLE 0001 SAMPLE.C 39 main (sample.obj) 0001:00000000

No auto variables found in main.

0002886C :00010101 SAMPLE 0001 SAMPLE.C 45 __RunExitList (edcstrt.ASM) 0001:00000060

List of auto variables at EBP 28888 in TrapFunc: Offset Name Type Value ────── ──────────────────── ───────────────────────────────── ───────────────── -4 Test near pointer to 8 bit unsigned 0x11150 unwritable

00028888 DFDF:C098 DOSCALL1 0004 Lost Stack chain - new EBP below previous

┌─────────────────────────────────────────────────────────────────────────┐ │ List of currently accessed modules (DLLs) object addresses │ ├─────────────────────────────────────────────────────────────────────────┤ │ Module E:\TEMP\SAMPLE.EXE Handle 00004756 │ │ Object Number Address Length Flags Type │ │ 000000 00010000 00003D94 00010015 - 16:16 Selector 000F │ ├─────────────────────────────────────────────────────────────────────────┤

   [ ...съедено молью... ]

├─────────────────────────────────────────────────────────────────────────┤ │ Module D:\OS2\DLL\UCONV.DLL Handle 00000995 │ │ Object Number Address Length Flags Type │ │ 000000 1FCF0000 000059D9 00012015 - 16:16 Selector FE7F │ └─────────────────────────────────────────────────────────────────────────┘

/*—– Stack Bottom —*/

/*—– Accessible Stack Bottom at 208A0 —*/

000208A0 :0000 0000 0000 0000 0000 0000 0000 0000 ……………. 000208B0 : lines not printed same as above

00027FE0 :5300 0000 AD65 F91B 0000 0500 0000 F87F S….e……….

   [ ...съедено молью... ]

00028890 :9412 0000 0000 0000 0000 0300 8413 0300 ……………. /*—– Stack Top —–*/