programs/winedbg/tgt_minidump.c

   1 /*
   2  * Wine debugger - minidump handling
   3  *
   4  * Copyright 2005 Eric Pouech
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define NONAMELESSUNION
  22 #define NONAMELESSSTRUCT
  23
  24 #include "config.h"
  25 #include "wine/port.h"
  26
  27 #include <stdlib.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <stdarg.h>
  31
  32 #include "debugger.h"
  33 #include "wingdi.h"
  34 #include "winuser.h"
  35 #include "tlhelp32.h"
  36 #include "wine/debug.h"
  37 #include "wine/exception.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
  40
  41 static struct be_process_io be_process_minidump_io;
  42
  43 /* we need this function on 32bit hosts to ensure we zero out the higher DWORD
  44  * stored in the minidump file (sometimes it's not cleared, or the conversion from
  45  * 32bit to 64bit wide integers is done as signed, which is wrong)
  46  * So we clamp on 32bit CPUs (as stored in minidump information) all addresses to
  47  * keep only the lower 32 bits.
  48  * FIXME: as of today, since we don't support a backend CPU which is different from
  49  * CPU this process is running on, casting to (DWORD_PTR) will do just fine.
  50  */
  51 static inline DWORD64  get_addr64(DWORD64 addr)
  52 {
  53     return (DWORD_PTR)addr;
  54 }
  55
  56 void minidump_write(const char* file, const EXCEPTION_RECORD* rec)
  57 {
  58     HANDLE                              hFile;
  59     MINIDUMP_EXCEPTION_INFORMATION      mei;
  60     EXCEPTION_POINTERS                  ep;
  61
  62     hFile = CreateFileA(file, GENERIC_READ|GENERIC_WRITE, 0, NULL, CREATE_ALWAYS,
  63                         FILE_ATTRIBUTE_NORMAL, NULL);
  64
  65     if (hFile == INVALID_HANDLE_VALUE) return;
  66
  67     if (rec)
  68     {
  69         mei.ThreadId = dbg_curr_thread->tid;
  70         mei.ExceptionPointers = &ep;
  71         ep.ExceptionRecord = (EXCEPTION_RECORD*)rec;
  72         ep.ContextRecord = &dbg_context;
  73         mei.ClientPointers = FALSE;
  74     }
  75     MiniDumpWriteDump(dbg_curr_process->handle, dbg_curr_process->pid,
  76                       hFile, MiniDumpNormal/*|MiniDumpWithDataSegs*/,
  77                       rec ? &mei : NULL, NULL, NULL);
  78     CloseHandle(hFile);
  79 }
  80
  81 #define Wine_ElfModuleListStream        0xFFF0
  82
  83 struct tgt_process_minidump_data
  84 {
  85     void*       mapping;
  86     HANDLE      hFile;
  87     HANDLE      hMap;
  88 };
  89
  90 static inline struct tgt_process_minidump_data* private_data(struct dbg_process* pcs)
  91 {
  92     return pcs->pio_data;
  93 }
  94
  95 static BOOL tgt_process_minidump_read(HANDLE hProcess, const void* addr,
  96                                       void* buffer, SIZE_T len, SIZE_T* rlen)
  97 {
  98     void*               stream;
  99
 100     if (!private_data(dbg_curr_process)->mapping) return FALSE;
 101     if (MiniDumpReadDumpStream(private_data(dbg_curr_process)->mapping,
 102                                MemoryListStream, NULL, &stream, NULL))
 103     {
 104         MINIDUMP_MEMORY_LIST*   mml = stream;
 105         MINIDUMP_MEMORY_DESCRIPTOR* mmd = &mml->MemoryRanges[0];
 106         int                     i;
 107
 108         for (i = 0; i < mml->NumberOfMemoryRanges; i++, mmd++)
 109         {
 110             if (get_addr64(mmd->StartOfMemoryRange) <= (DWORD_PTR)addr &&
 111                 (DWORD_PTR)addr < get_addr64(mmd->StartOfMemoryRange) + mmd->Memory.DataSize)
 112             {
 113                 len = min(len,
 114                           get_addr64(mmd->StartOfMemoryRange) + mmd->Memory.DataSize - (DWORD_PTR)addr);
 115                 memcpy(buffer,
 116                        (char*)private_data(dbg_curr_process)->mapping + mmd->Memory.Rva + (DWORD_PTR)addr - get_addr64(mmd->StartOfMemoryRange),
 117                        len);
 118                 if (rlen) *rlen = len;
 119                 return TRUE;
 120             }
 121         }
 122     }
 123     /* FIXME: this is a dirty hack to let the last frame in a bt to work
 124      * However, we need to check who's to blame, this code or the current
 125      * dbghelp!StackWalk implementation
 126      */
 127     if ((DWORD_PTR)addr < 32)
 128     {
 129         memset(buffer, 0, len);
 130         if (rlen) *rlen = len;
 131         return TRUE;
 132     }
 133     return FALSE;
 134 }
 135
 136 static BOOL tgt_process_minidump_write(HANDLE hProcess, void* addr,
 137                                        const void* buffer, SIZE_T len, SIZE_T* wlen)
 138 {
 139     return FALSE;
 140 }
 141
 142 static BOOL CALLBACK validate_file(PCWSTR name, void* user)
 143 {
 144     return FALSE; /* get the first file we find !! */
 145 }
 146
 147 static BOOL is_pe_module_embedded(struct tgt_process_minidump_data* data,
 148                                   MINIDUMP_MODULE* pe_mm)
 149 {
 150     MINIDUMP_MODULE_LIST*       mml;
 151
 152     if (MiniDumpReadDumpStream(data->mapping, Wine_ElfModuleListStream, NULL,
 153                                (void**)&mml, NULL))
 154     {
 155         MINIDUMP_MODULE*        mm;
 156         unsigned                i;
 157
 158         for (i = 0, mm = &mml->Modules[0]; i < mml->NumberOfModules; i++, mm++)
 159         {
 160             if (get_addr64(mm->BaseOfImage) <= get_addr64(pe_mm->BaseOfImage) &&
 161                 get_addr64(mm->BaseOfImage) + mm->SizeOfImage >= get_addr64(pe_mm->BaseOfImage) + pe_mm->SizeOfImage)
 162                 return TRUE;
 163         }
 164     }
 165     return FALSE;
 166 }
 167
 168 static enum dbg_start minidump_do_reload(struct tgt_process_minidump_data* data)
 169 {
 170     void*                       stream;
 171     DWORD                       pid = 1; /* by default */
 172     HANDLE                      hProc = (HANDLE)0x900DBAAD;
 173     int                         i;
 174     MINIDUMP_MODULE_LIST*       mml;
 175     MINIDUMP_MODULE*            mm;
 176     MINIDUMP_STRING*            mds;
 177     WCHAR                       exec_name[1024];
 178     WCHAR                       nameW[1024];
 179     unsigned                    len;
 180     static WCHAR                default_exec_name[] = {'<','m','i','n','i','d','u','m','p','-','e','x','e','c','>',0};
 181
 182     /* fetch PID */
 183     if (MiniDumpReadDumpStream(data->mapping, MiscInfoStream, NULL, &stream, NULL))
 184     {
 185         MINIDUMP_MISC_INFO* mmi = stream;
 186         if (mmi->Flags1 & MINIDUMP_MISC1_PROCESS_ID)
 187             pid = mmi->ProcessId;
 188     }
 189
 190     /* fetch executable name (it's normally the first one in module list) */
 191     lstrcpyW(exec_name, default_exec_name);
 192     if (MiniDumpReadDumpStream(data->mapping, ModuleListStream, NULL, &stream, NULL))
 193     {
 194         mml = stream;
 195         if (mml->NumberOfModules)
 196         {
 197             WCHAR*      ptr;
 198
 199             mm = &mml->Modules[0];
 200             mds = (MINIDUMP_STRING*)((char*)data->mapping + mm->ModuleNameRva);
 201             len = mds->Length / 2;
 202             memcpy(exec_name, mds->Buffer, mds->Length);
 203             exec_name[len] = 0;
 204             for (ptr = exec_name + len - 1; ptr >= exec_name; ptr--)
 205             {
 206                 if (*ptr == '/' || *ptr == '\\')
 207                 {
 208                     memmove(exec_name, ptr + 1, (lstrlenW(ptr + 1) + 1) * sizeof(WCHAR));
 209                     break;
 210                 }
 211             }
 212         }
 213     }
 214
 215     if (MiniDumpReadDumpStream(data->mapping, SystemInfoStream, NULL, &stream, NULL))
 216     {
 217         MINIDUMP_SYSTEM_INFO*   msi = stream;
 218         const char *str;
 219         char tmp[128];
 220
 221         dbg_printf("WineDbg starting on minidump on pid %04x\n", pid);
 222         switch (msi->ProcessorArchitecture)
 223         {
 224         case PROCESSOR_ARCHITECTURE_UNKNOWN:
 225             str = "Unknown";
 226             break;
 227         case PROCESSOR_ARCHITECTURE_INTEL:
 228             strcpy(tmp, "Intel ");
 229             switch (msi->ProcessorLevel)
 230             {
 231             case  3: str = "80386"; break;
 232             case  4: str = "80486"; break;
 233             case  5: str = "Pentium"; break;
 234             case  6: str = "Pentium Pro/II or AMD Athlon"; break;
 235             case 15: str = "Pentium 4 or AMD Athlon64"; break;
 236             default: str = "???"; break;
 237             }
 238             strcat(tmp, str);
 239             if (msi->ProcessorLevel == 3 || msi->ProcessorLevel == 4)
 240             {
 241                 if (HIWORD(msi->ProcessorRevision) == 0xFF)
 242                     sprintf(tmp + strlen(tmp), " (%c%d)",
 243                             'A' + HIBYTE(LOWORD(msi->ProcessorRevision)),
 244                             LOBYTE(LOWORD(msi->ProcessorRevision)));
 245                 else
 246                     sprintf(tmp + strlen(tmp), " (%c%d)",
 247                             'A' + HIWORD(msi->ProcessorRevision),
 248                             LOWORD(msi->ProcessorRevision));
 249             }
 250             else sprintf(tmp + strlen(tmp), " (%d.%d)",
 251                          HIWORD(msi->ProcessorRevision),
 252                          LOWORD(msi->ProcessorRevision));
 253             str = tmp;
 254             break;
 255         case PROCESSOR_ARCHITECTURE_MIPS:
 256             str = "Mips";
 257             break;
 258         case PROCESSOR_ARCHITECTURE_ALPHA:
 259             str = "Alpha";
 260             break;
 261         case PROCESSOR_ARCHITECTURE_PPC:
 262             str = "PowerPC";
 263             break;
 264         case PROCESSOR_ARCHITECTURE_AMD64:
 265             str = "X86_64";
 266             break;
 267         default:
 268             str = "???";
 269             break;
 270         }
 271         dbg_printf("  %s was running on #%d %s CPU%s",
 272                    dbg_W2A(exec_name, -1), msi->u.s.NumberOfProcessors, str,
 273                    msi->u.s.NumberOfProcessors < 2 ? "" : "s");
 274         switch (msi->MajorVersion)
 275         {
 276         case 3:
 277             switch (msi->MinorVersion)
 278             {
 279             case 51: str = "NT 3.51"; break;
 280             default: str = "3-????"; break;
 281             }
 282             break;
 283         case 4:
 284             switch (msi->MinorVersion)
 285             {
 286             case 0: str = (msi->PlatformId == VER_PLATFORM_WIN32_NT) ? "NT 4.0" : "95"; break;
 287             case 10: str = "98"; break;
 288             case 90: str = "ME"; break;
 289             default: str = "5-????"; break;
 290             }
 291             break;
 292         case 5:
 293             switch (msi->MinorVersion)
 294             {
 295             case 0: str = "2000"; break;
 296             case 1: str = "XP"; break;
 297             case 2: str = "Server 2003"; break;
 298             default: str = "5-????"; break;
 299             }
 300             break;
 301         default: str = "???"; break;
 302         }
 303         dbg_printf(" on Windows %s (%u)\n", str, msi->BuildNumber);
 304         /* FIXME CSD: msi->CSDVersionRva */
 305     }
 306
 307     dbg_curr_process = dbg_add_process(&be_process_minidump_io, pid, hProc);
 308     dbg_curr_pid = pid;
 309     dbg_curr_process->pio_data = data;
 310     dbg_set_process_name(dbg_curr_process, exec_name);
 311
 312     dbg_init(hProc, NULL, FALSE);
 313
 314     if (MiniDumpReadDumpStream(data->mapping, ThreadListStream, NULL, &stream, NULL))
 315     {
 316         MINIDUMP_THREAD_LIST*   mtl = stream;
 317         ULONG                   i;
 318
 319         for (i = 0; i < mtl->NumberOfThreads; i++)
 320         {
 321             dbg_add_thread(dbg_curr_process, mtl->Threads[i].ThreadId, NULL,
 322                            (void*)(DWORD_PTR)get_addr64(mtl->Threads[i].Teb));
 323         }
 324     }
 325     /* first load ELF modules, then do the PE ones */
 326     if (MiniDumpReadDumpStream(data->mapping, Wine_ElfModuleListStream, NULL,
 327                                &stream, NULL))
 328     {
 329         WCHAR   buffer[MAX_PATH];
 330
 331         mml = stream;
 332         for (i = 0, mm = &mml->Modules[0]; i < mml->NumberOfModules; i++, mm++)
 333         {
 334             mds = (MINIDUMP_STRING*)((char*)data->mapping + mm->ModuleNameRva);
 335             memcpy(nameW, mds->Buffer, mds->Length);
 336             nameW[mds->Length / sizeof(WCHAR)] = 0;
 337             if (SymFindFileInPathW(hProc, NULL, nameW, (void*)(DWORD_PTR)mm->CheckSum,
 338                                    0, 0, SSRVOPT_DWORD, buffer, validate_file, NULL))
 339                 dbg_load_module(hProc, NULL, buffer, get_addr64(mm->BaseOfImage),
 340                                  mm->SizeOfImage);
 341             else
 342                 SymLoadModuleExW(hProc, NULL, nameW, NULL, get_addr64(mm->BaseOfImage),
 343                                  mm->SizeOfImage, NULL, SLMFLAG_VIRTUAL);
 344         }
 345     }
 346     if (MiniDumpReadDumpStream(data->mapping, ModuleListStream, NULL, &stream, NULL))
 347     {
 348         WCHAR   buffer[MAX_PATH];
 349
 350         mml = stream;
 351         for (i = 0, mm = &mml->Modules[0]; i < mml->NumberOfModules; i++, mm++)
 352         {
 353             mds = (MINIDUMP_STRING*)((char*)data->mapping + mm->ModuleNameRva);
 354             memcpy(nameW, mds->Buffer, mds->Length);
 355             nameW[mds->Length / sizeof(WCHAR)] = 0;
 356             if (SymFindFileInPathW(hProc, NULL, nameW, (void*)(DWORD_PTR)mm->TimeDateStamp,
 357                                    mm->SizeOfImage, 0, SSRVOPT_DWORD, buffer, validate_file, NULL))
 358                 dbg_load_module(hProc, NULL, buffer, get_addr64(mm->BaseOfImage),
 359                                  mm->SizeOfImage);
 360             else if (is_pe_module_embedded(data, mm))
 361                 dbg_load_module(hProc, NULL, nameW, get_addr64(mm->BaseOfImage),
 362                                  mm->SizeOfImage);
 363             else
 364                 SymLoadModuleExW(hProc, NULL, nameW, NULL, get_addr64(mm->BaseOfImage),
 365                                  mm->SizeOfImage, NULL, SLMFLAG_VIRTUAL);
 366         }
 367     }
 368     if (MiniDumpReadDumpStream(data->mapping, ExceptionStream, NULL, &stream, NULL))
 369     {
 370         MINIDUMP_EXCEPTION_STREAM*      mes = stream;
 371
 372         if ((dbg_curr_thread = dbg_get_thread(dbg_curr_process, mes->ThreadId)))
 373         {
 374             ADDRESS64   addr;
 375
 376             dbg_curr_tid = mes->ThreadId;
 377             dbg_curr_thread->in_exception = TRUE;
 378             dbg_curr_thread->excpt_record.ExceptionCode = mes->ExceptionRecord.ExceptionCode;
 379             dbg_curr_thread->excpt_record.ExceptionFlags = mes->ExceptionRecord.ExceptionFlags;
 380             dbg_curr_thread->excpt_record.ExceptionRecord = (void*)(DWORD_PTR)get_addr64(mes->ExceptionRecord.ExceptionRecord);
 381             dbg_curr_thread->excpt_record.ExceptionAddress = (void*)(DWORD_PTR)get_addr64(mes->ExceptionRecord.ExceptionAddress);
 382             dbg_curr_thread->excpt_record.NumberParameters = mes->ExceptionRecord.NumberParameters;
 383             for (i = 0; i < dbg_curr_thread->excpt_record.NumberParameters; i++)
 384             {
 385                 dbg_curr_thread->excpt_record.ExceptionInformation[i] = mes->ExceptionRecord.ExceptionInformation[i];
 386             }
 387             memcpy(&dbg_context, (char*)data->mapping + mes->ThreadContext.Rva,
 388                    min(sizeof(dbg_context), mes->ThreadContext.DataSize));
 389             memory_get_current_pc(&addr);
 390             stack_fetch_frames(&dbg_context);
 391             be_cpu->print_context(dbg_curr_thread->handle, &dbg_context, 0);
 392             stack_info(-1);
 393             be_cpu->print_segment_info(dbg_curr_thread->handle, &dbg_context);
 394             stack_backtrace(mes->ThreadId);
 395             source_list_from_addr(&addr, 0);
 396         }
 397     }
 398     return start_ok;
 399 }
 400
 401 static void cleanup(struct tgt_process_minidump_data* data)
 402 {
 403     if (data->mapping)                          UnmapViewOfFile(data->mapping);
 404     if (data->hMap)                             CloseHandle(data->hMap);
 405     if (data->hFile != INVALID_HANDLE_VALUE)    CloseHandle(data->hFile);
 406     HeapFree(GetProcessHeap(), 0, data);
 407 }
 408
 409 static struct be_process_io be_process_minidump_io;
 410
 411 enum dbg_start minidump_reload(int argc, char* argv[])
 412 {
 413     struct tgt_process_minidump_data*   data;
 414     enum dbg_start                      ret = start_error_parse;
 415
 416     /* try the form <myself> minidump-file */
 417     if (argc != 1) return start_error_parse;
 418
 419     WINE_TRACE("Processing Minidump file %s\n", argv[0]);
 420
 421     data = HeapAlloc(GetProcessHeap(), 0, sizeof(struct tgt_process_minidump_data));
 422     if (!data) return start_error_init;
 423     data->mapping = NULL;
 424     data->hMap    = NULL;
 425     data->hFile   = INVALID_HANDLE_VALUE;
 426
 427     if ((data->hFile = CreateFileA(argv[0], GENERIC_READ, FILE_SHARE_READ, NULL,
 428                                    OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
 429         ((data->hMap = CreateFileMappingA(data->hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
 430         ((data->mapping = MapViewOfFile(data->hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
 431     {
 432         __TRY
 433         {
 434             if (((MINIDUMP_HEADER*)data->mapping)->Signature == MINIDUMP_SIGNATURE)
 435             {
 436                 ret = minidump_do_reload(data);
 437             }
 438         }
 439         __EXCEPT_PAGE_FAULT
 440         {
 441             dbg_printf("Unexpected fault while reading minidump %s\n", argv[0]);
 442             dbg_curr_pid = 0;
 443         }
 444         __ENDTRY;
 445     }
 446     if (ret != start_ok) cleanup(data);
 447     return ret;
 448 }
 449
 450 static BOOL tgt_process_minidump_close_process(struct dbg_process* pcs, BOOL kill)
 451 {
 452     struct tgt_process_minidump_data*    data = private_data(pcs);
 453
 454     cleanup(data);
 455     pcs->pio_data = NULL;
 456     SymCleanup(pcs->handle);
 457     dbg_del_process(pcs);
 458     return TRUE;
 459 }
 460
 461 static BOOL tgt_process_minidump_get_selector(HANDLE hThread, DWORD sel, LDT_ENTRY* le)
 462 {
 463     /* so far, pretend all selectors are valid, and mapped to a 32bit flat address space */
 464     memset(le, 0, sizeof(*le));
 465     le->HighWord.Bits.Default_Big = 1;
 466     return TRUE;
 467 }
 468
 469 static struct be_process_io be_process_minidump_io =
 470 {
 471     tgt_process_minidump_close_process,
 472     tgt_process_minidump_read,
 473     tgt_process_minidump_write,
 474     tgt_process_minidump_get_selector,
 475 };