Je suis toujours dans mon petit programme de debug. J'ai écrit ceci pour avoir la callstack :

Code : Sélectionner tout - Visualiser dans une fenêtre à part
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
#include <stdio.h>

#include <windows.h>
#include <dbghelp.h>

#define ERR(str) \
do { \
  LPTSTR msg; \
  char *disp; \
  size_t l; \
  DWORD err; \
  err = GetLastError(); \
  FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, \
                NULL, err, 0, (LPTSTR)&msg, 0, NULL); \
  l = strlen(msg) + strlen("(00000) ") + 1; \
   disp = (char *)malloc(l * sizeof(char)); \
   snprintf(disp, l, "(%5ld) %s", err, msg); \
   fprintf(stderr, "%s %s", str, disp); \
   LocalFree(msg); \
}while (0)

#define STACKWALK_MAX_NAMELEN 1024

typedef enum
{
  SW_CALLSTACK_ENTRY_FIRST,
  SW_CALLSTACK_ENTRY_NEXT,
  SW_CALLSTACK_ENTRY_LAST
} Sw_Callstack_Entry;

typedef enum
{
  SW_MODULE_TYPE_NONE,
  SW_MODULE_TYPE_COFF,
  SW_MODULE_TYPE_CODE_VIEW,
  SW_MODULE_TYPE_PDB,
  SW_MODULE_TYPE_EXPORTED,
  SW_MODULE_TYPE_DEFERRED,
  SW_MODULE_TYPE_SYM,
  SW_MODULE_TYPE_DIA,
  SW_MODULE_TYPE_VIRTUAL,
  SW_MODULE_TYPE_DEFAULT
} Sw_Module_Type;

typedef struct _IMAGEHLP_MODULE64_V2 IMAGEHLP_MODULE64_V2;
struct _IMAGEHLP_MODULE64_V2
{
  DWORD    SizeOfStruct;
  DWORD64  BaseOfImage;
  DWORD    ImageSize;
  DWORD    TimeDateStamp;
  DWORD    CheckSum;
  DWORD    NumSyms;
  SYM_TYPE SymType;
  CHAR     ModuleName[32];
  CHAR     ImageName[256];
  CHAR     LoadedImageName[256];
};

typedef struct _Sw_Data Sw_Data;
typedef struct _Sw      Sw;

struct _Sw_Data
{
  char name[STACKWALK_MAX_NAMELEN];
  char undecorated_name[STACKWALK_MAX_NAMELEN];
  char undecorated_fullname[STACKWALK_MAX_NAMELEN];
  DWORD64 offset_from_symbol;
  DWORD offset_from_line;
  DWORD line_nbr;
  CHAR line_filename[STACKWALK_MAX_NAMELEN];
  Sw_Module_Type module_type;
  CHAR module_name[STACKWALK_MAX_NAMELEN];
  DWORD64 base_of_image;
  CHAR loaded_image_name[STACKWALK_MAX_NAMELEN];
};

struct _Sw
{
  HANDLE proc;   /* processus handle */
};

Sw *
sw_init(HANDLE proc)
{
  char filename[MAX_PATH];
  Sw *sw;
  DWORD options;

  sw = (Sw *)calloc(1, sizeof(Sw));
  if (!sw)
    return NULL;

  if (!proc)
    sw->proc = GetCurrentProcess();

  if (!SymInitialize(sw->proc, NULL, TRUE))
    goto free_sw;
  options = SymGetOptions();
  SymSetOptions(options |  SYMOPT_LOAD_LINES | SYMOPT_FAIL_CRITICAL_ERRORS);

  /* if (!GetModuleFileName(0, filename, sizeof(filename))) */
  /*   goto cleanup_dbghelp; */

  return sw;

 /* cleanup_dbghelp: */
 free_sw:
  free(sw);

  return NULL;
}

BOOL __stdcall _sw_read_memory_cb(HANDLE      hProcess,
                                  DWORD64     qwBaseAddress,
                                  PVOID       lpBuffer,
                                  DWORD       nSize,
                                  LPDWORD     lpNumberOfBytesRead)
{
    SIZE_T st;
    BOOL ret;

    /* FIXME: cast... */
    ret = ReadProcessMemory(hProcess, (LPVOID)(DWORD)qwBaseAddress, lpBuffer, nSize, &st);
    *lpNumberOfBytesRead = (DWORD)st;
    return ret;
}

/* FIXME: Context is passed when managing exception stuff */
void
sw_print(Sw *sw, HANDLE thread, const CONTEXT *context)
{
  CONTEXT ctx;
  Sw_Data sw_data;
  STACKFRAME64 s;
  IMAGEHLP_LINE64 line;
  IMAGEHLP_MODULE64 module;
  IMAGEHLP_SYMBOL64 *sym;
  void *data;
  DWORD arch;
  int frame_num;

  if (!sw)
    return;

  /* Set the context */
  if (!context)
    {
      if (!thread || (thread == GetCurrentThread()))
        {
          memset(&ctx, 0, sizeof(CONTEXT));
          ctx.ContextFlags = CONTEXT_FULL;
          RtlCaptureContext(&ctx);
        }
      else
        {
          SuspendThread(thread);
          memset(&ctx, 0, sizeof(CONTEXT));
          ctx.ContextFlags = CONTEXT_FULL;
          if (!GetThreadContext(thread, &ctx))
            {
              ResumeThread(thread);
              return;
            }
        }
    }
  else
    ctx = *context;

  /* Init the first stack frame */
  memset(&s, 0, sizeof(s));

#ifdef _M_IX86
  /* normally, call ImageNtHeader() and use machine info from PE header */
  arch = IMAGE_FILE_MACHINE_I386;
  s.AddrPC.Offset = ctx.Eip;
  s.AddrPC.Mode = AddrModeFlat;
  s.AddrFrame.Offset = ctx.Ebp;
  s.AddrFrame.Mode = AddrModeFlat;
  s.AddrStack.Offset = ctx.Esp;
  s.AddrStack.Mode = AddrModeFlat;
#elif _M_X64
  arch = IMAGE_FILE_MACHINE_AMD64;
  s.AddrPC.Offset = ctx.Rip;
  s.AddrPC.Mode = AddrModeFlat;
  s.AddrFrame.Offset = ctx.Rsp;
  s.AddrFrame.Mode = AddrModeFlat;
  s.AddrStack.Offset = ctx.Rsp;
  s.AddrStack.Mode = AddrModeFlat;
#elif _M_IA64
  arch = IMAGE_FILE_MACHINE_IA64;
  s.AddrPC.Offset = ctx.StIIP;
  s.AddrPC.Mode = AddrModeFlat;
  s.AddrFrame.Offset = ctx.IntSp;
  s.AddrFrame.Mode = AddrModeFlat;
  s.AddrBStore.Offset = ctx.RsBSP;
  s.AddrBStore.Mode = AddrModeFlat;
  s.AddrStack.Offset = ctx.IntSp;
  s.AddrStack.Mode = AddrModeFlat;
#else
# error "Platform not supported!"
#endif

  sym = (IMAGEHLP_SYMBOL64 *)calloc(1, sizeof(IMAGEHLP_SYMBOL64) + STACKWALK_MAX_NAMELEN);
  if (!sym)
    goto resume_thread;

  sym->SizeOfStruct = sizeof(IMAGEHLP_SYMBOL64);
  sym->MaxNameLength = STACKWALK_MAX_NAMELEN;

  memset(&line, 0, sizeof(line));
  line.SizeOfStruct = sizeof(line);

  memset(&module, 0, sizeof(module));
  module.SizeOfStruct = sizeof(module);

  for (frame_num = 0; ; frame_num++)
    {
      /* Sw_Callstack_Entry e; */

      printf(" -- %d\n", frame_num);

      if (!StackWalk64(arch, sw->proc, thread, &s, &ctx,
                       _sw_read_memory_cb,
                       SymFunctionTableAccess64,
                       SymGetModuleBase64,
                       NULL))
        {
          printf("StackWalk64() failed\n");
          break;
        }

      sw_data.name[0] = '\0';
      sw_data.undecorated_name[0] = '\0';
      sw_data.undecorated_fullname[0] = '\0';
      sw_data.offset_from_symbol = 0;
      sw_data.offset_from_line = 0;
      sw_data.line_nbr = 0;
      sw_data.line_filename[0] = '\0';
      sw_data.module_type = SW_MODULE_TYPE_NONE;
      sw_data.module_name[0] = '\0';
      sw_data.base_of_image = 0;
      sw_data.loaded_image_name[0] = '\0';

      if (s.AddrPC.Offset == s.AddrReturn.Offset)
        {
          printf("StackWalk64-Endless-Callstack!");
          break;
        }

      if (s.AddrPC.Offset != 0)
        {
          /* Name */
          if (SymGetSymFromAddr64(sw->proc, s.AddrPC.Offset,
                                  &(sw_data.offset_from_symbol), sym))
            {
              memcpy(sw_data.name, sym->Name, strlen(sym->Name) + 1);
              UnDecorateSymbolName(sym->Name, sw_data.undecorated_name,
                                   STACKWALK_MAX_NAMELEN, UNDNAME_NAME_ONLY);
              UnDecorateSymbolName(sym->Name, sw_data.undecorated_fullname,
                                   STACKWALK_MAX_NAMELEN, UNDNAME_COMPLETE);
            }
          else
            {
              ERR("SymGetSymFromAddr64() failed");
            }

          /* Line */
          if (SymGetLineFromAddr64(sw->proc, s.AddrPC.Offset, &(sw_data.offset_from_line), &line))
            {
              sw_data.line_nbr = line.LineNumber;
              memcpy(sw_data.line_filename, line.FileName, strlen(line.FileName) + 1);
            }
          else
            {
              ERR("SymGetLineFromAddr64() failed");
            }

          /* Module */
          /* intermediate varaible to avoid overflow (bug in v6.3.5.1) */
          data = malloc(4096);
          if (data)
            {
              memcpy(data, &module, sizeof(module));
              if (SymGetModuleInfo64(sw->proc, s.AddrPC.Offset, (IMAGEHLP_MODULE64 *)data))
                {
                  memcpy(&module, data, sizeof(IMAGEHLP_MODULE64));
                  switch (module.SymType)
                    {
                    case SymNone:
                      sw_data.module_type = SW_MODULE_TYPE_NONE;
                      break;
                    case SymCoff:
                      sw_data.module_type = SW_MODULE_TYPE_COFF;
                      break;
                    case SymCv:
                      sw_data.module_type = SW_MODULE_TYPE_CODE_VIEW;
                      break;
                    case SymPdb:
                      sw_data.module_type = SW_MODULE_TYPE_PDB;
                      break;
                    case SymExport:
                      sw_data.module_type = SW_MODULE_TYPE_EXPORTED;
                      break;
                    case SymDeferred:
                      sw_data.module_type = SW_MODULE_TYPE_DEFERRED;
                      break;
                    case SymSym:
                      sw_data.module_type = SW_MODULE_TYPE_SYM;
                      break;
                    case SymDia:
                      sw_data.module_type = SW_MODULE_TYPE_DIA;
                      break;
                    case SymVirtual:
                      sw_data.module_type = SW_MODULE_TYPE_VIRTUAL;
                      break;
                    default:
                      sw_data.module_type = SW_MODULE_TYPE_DEFAULT;
                      break;
                    }
                  memcpy(sw_data.module_name, module.ModuleName, strlen(module.ModuleName) + 1);
                  sw_data.base_of_image = module.BaseOfImage;
                  memcpy(sw_data.loaded_image_name, module.LoadedImageName, strlen(module.LoadedImageName) + 1);
                }
              else
                {
                  ERR("SymGetModuleInfo64 failed");
                }
              free(data);
            }
          else
            {
              printf("not enough memory...\n");
            }
        }

      /* e = SW_CALLSTACK_ENTRY_NEXT; */
      /* if (frame_num == 0) */
      /*   e = SW_CALLSTACK_ENTRY_FIRST; */
      /* callstack_entry(e, cse); */

      if (s.AddrReturn.Offset == 0)
        {
          /* callstack_entry(SW_CALLSTACK_ENTRY_LAST, cse); */
          break;
        }
    }

  return;

 resume_thread:
  printf("error\n");
  if (!context)
    ResumeThread(thread);
}

void fct(Sw *sw)
{
  sw_print(sw, NULL, NULL);
}

int main()
{
  Sw *sw;

  sw = sw_init(NULL);
  fct(sw);

  return 0;
}
mais quand je l'exécute, j'ai ces messages d'erreur :

Code : Sélectionner tout - Visualiser dans une fenêtre à part
1
2
3
SymGetSymFromAddr64() failed (  487) Tentative d'accès à une adresse non valide.
SymGetLineFromAddr64() failed (  487) Tentative d'accès à une adresse non valide.
SymGetModuleInfo64 failed (   87) Paramètre incorrect.
j'ai cherché pendant plusieurs heures sans trouver la raison...

Donc si quelqu'un a une idée, je suis preneur

merci