git.oblomov.eu Git - wine/blob - dlls/dbghelp/minidump.c

   1 /*
   2  * File minidump.c - management of dumps (read & write)
   3  *
   4  * Copyright (C) 2004-2005, 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 #include <time.h>
  22
  23 #define NONAMELESSUNION
  24 #define NONAMELESSSTRUCT
  25
  26 #include "ntstatus.h"
  27 #define WIN32_NO_STATUS
  28 #include "dbghelp_private.h"
  29 #include "winnls.h"
  30 #include "winreg.h"
  31 #include "winternl.h"
  32 #include "psapi.h"
  33 #include "wine/debug.h"
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  36
  37 struct dump_memory
  38 {
  39     ULONG                               base;
  40     ULONG                               size;
  41     ULONG                               rva;
  42 };
  43
  44 struct dump_module
  45 {
  46     unsigned                            is_elf;
  47     ULONG                               base;
  48     ULONG                               size;
  49     DWORD                               timestamp;
  50     DWORD                               checksum;
  51     char                                name[MAX_PATH];
  52 };
  53
  54 struct dump_context
  55 {
  56     /* process & thread information */
  57     HANDLE                              hProcess;
  58     DWORD                               pid;
  59     void*                               pcs_buffer;
  60     SYSTEM_PROCESS_INFORMATION*         spi;
  61     /* module information */
  62     struct dump_module*                 module;
  63     unsigned                            num_module;
  64     /* exception information */
  65     /* output information */
  66     MINIDUMP_TYPE                       type;
  67     HANDLE                              hFile;
  68     RVA                                 rva;
  69     struct dump_memory*                 mem;
  70     unsigned                            num_mem;
  71     /* callback information */
  72     MINIDUMP_CALLBACK_INFORMATION*      cb;
  73 };
  74
  75 /******************************************************************
  76  *              fetch_process_info
  77  *
  78  * reads system wide process information, and make spi point to the record
  79  * for process of id 'pid'
  80  */
  81 static BOOL fetch_process_info(struct dump_context* dc)
  82 {
  83     ULONG       buf_size = 0x1000;
  84     NTSTATUS    nts;
  85
  86     dc->pcs_buffer = NULL;
  87     if (!(dc->pcs_buffer = HeapAlloc(GetProcessHeap(), 0, buf_size))) return FALSE;
  88     for (;;)
  89     {
  90         nts = NtQuerySystemInformation(SystemProcessInformation,
  91                                        dc->pcs_buffer, buf_size, NULL);
  92         if (nts != STATUS_INFO_LENGTH_MISMATCH) break;
  93         dc->pcs_buffer = HeapReAlloc(GetProcessHeap(), 0, dc->pcs_buffer,
  94                                      buf_size *= 2);
  95         if (!dc->pcs_buffer) return FALSE;
  96     }
  97
  98     if (nts == STATUS_SUCCESS)
  99     {
 100         dc->spi = dc->pcs_buffer;
 101         for (;;)
 102         {
 103             if (dc->spi->dwProcessID == dc->pid) return TRUE;
 104             if (!dc->spi->dwOffset) break;
 105             dc->spi = (SYSTEM_PROCESS_INFORMATION*)
 106                 ((char*)dc->spi + dc->spi->dwOffset);
 107         }
 108     }
 109     HeapFree(GetProcessHeap(), 0, dc->pcs_buffer);
 110     dc->pcs_buffer = NULL;
 111     dc->spi = NULL;
 112     return FALSE;
 113 }
 114
 115 static void fetch_thread_stack(struct dump_context* dc, void* teb_addr,
 116                                const CONTEXT* ctx, MINIDUMP_MEMORY_DESCRIPTOR* mmd)
 117 {
 118     NT_TIB      tib;
 119
 120     if (ReadProcessMemory(dc->hProcess, teb_addr, &tib, sizeof(tib), NULL))
 121     {
 122 #ifdef __i386__
 123         /* limiting the stack dumping to the size actually used */
 124         if (ctx->Esp)
 125             mmd->StartOfMemoryRange = (ctx->Esp - 4);
 126         else
 127             mmd->StartOfMemoryRange = (ULONG_PTR)tib.StackLimit;
 128 #elif defined(__powerpc__)
 129         if (ctx->Iar)
 130             mmd->StartOfMemoryRange = ctx->Iar - 4;
 131         else
 132             mmd->StartOfMemoryRange = (ULONG_PTR)tib.StackLimit;
 133 #elif defined(__x86_64__)
 134         if (ctx->Rsp)
 135             mmd->StartOfMemoryRange = (ctx->Rsp - 8);
 136         else
 137             mmd->StartOfMemoryRange = (ULONG_PTR)tib.StackLimit;
 138 #else
 139 #error unsupported CPU
 140 #endif
 141         mmd->Memory.DataSize = (ULONG_PTR)tib.StackBase - mmd->StartOfMemoryRange;
 142     }
 143 }
 144
 145 /******************************************************************
 146  *              fetch_thread_info
 147  *
 148  * fetches some information about thread of id 'tid'
 149  */
 150 static BOOL fetch_thread_info(struct dump_context* dc, int thd_idx,
 151                               const MINIDUMP_EXCEPTION_INFORMATION* except,
 152                               MINIDUMP_THREAD* mdThd, CONTEXT* ctx)
 153 {
 154     DWORD                       tid = dc->spi->ti[thd_idx].dwThreadID;
 155     HANDLE                      hThread;
 156     THREAD_BASIC_INFORMATION    tbi;
 157
 158     memset(ctx, 0, sizeof(*ctx));
 159
 160     mdThd->ThreadId = dc->spi->ti[thd_idx].dwThreadID;
 161     mdThd->SuspendCount = 0;
 162     mdThd->Teb = 0;
 163     mdThd->Stack.StartOfMemoryRange = 0;
 164     mdThd->Stack.Memory.DataSize = 0;
 165     mdThd->Stack.Memory.Rva = 0;
 166     mdThd->ThreadContext.DataSize = 0;
 167     mdThd->ThreadContext.Rva = 0;
 168     mdThd->PriorityClass = dc->spi->ti[thd_idx].dwBasePriority; /* FIXME */
 169     mdThd->Priority = dc->spi->ti[thd_idx].dwCurrentPriority;
 170
 171     if ((hThread = OpenThread(THREAD_ALL_ACCESS, FALSE, tid)) == NULL)
 172     {
 173         FIXME("Couldn't open thread %u (%u)\n",
 174               dc->spi->ti[thd_idx].dwThreadID, GetLastError());
 175         return FALSE;
 176     }
 177
 178     if (NtQueryInformationThread(hThread, ThreadBasicInformation,
 179                                  &tbi, sizeof(tbi), NULL) == STATUS_SUCCESS)
 180     {
 181         mdThd->Teb = (ULONG_PTR)tbi.TebBaseAddress;
 182         if (tbi.ExitStatus == STILL_ACTIVE)
 183         {
 184             if (tid != GetCurrentThreadId() &&
 185                 (mdThd->SuspendCount = SuspendThread(hThread)) != (DWORD)-1)
 186             {
 187                 mdThd->SuspendCount--;
 188                 ctx->ContextFlags = CONTEXT_FULL;
 189                 if (!GetThreadContext(hThread, ctx))
 190                     memset(ctx, 0, sizeof(*ctx));
 191
 192                 fetch_thread_stack(dc, tbi.TebBaseAddress, ctx, &mdThd->Stack);
 193                 ResumeThread(hThread);
 194             }
 195             else if (tid == GetCurrentThreadId() && except)
 196             {
 197                 CONTEXT lctx, *pctx;
 198                 if (except->ClientPointers)
 199                 {
 200                     EXCEPTION_POINTERS      ep;
 201
 202                     ReadProcessMemory(dc->hProcess, except->ExceptionPointers,
 203                                       &ep, sizeof(ep), NULL);
 204                     ReadProcessMemory(dc->hProcess, ep.ContextRecord,
 205                                       &ctx, sizeof(ctx), NULL);
 206                     pctx = &lctx;
 207                 }
 208                 else pctx = except->ExceptionPointers->ContextRecord;
 209                 fetch_thread_stack(dc, tbi.TebBaseAddress, pctx, &mdThd->Stack);
 210             }
 211         }
 212     }
 213     CloseHandle(hThread);
 214     return TRUE;
 215 }
 216
 217 /******************************************************************
 218  *              add_module
 219  *
 220  * Add a module to a dump context
 221  */
 222 static BOOL add_module(struct dump_context* dc, const char* name,
 223                        DWORD base, DWORD size, DWORD timestamp, DWORD checksum,
 224                        BOOL is_elf)
 225 {
 226     if (!dc->module)
 227         dc->module = HeapAlloc(GetProcessHeap(), 0,
 228                                ++dc->num_module * sizeof(*dc->module));
 229     else
 230         dc->module = HeapReAlloc(GetProcessHeap(), 0, dc->module,
 231                                  ++dc->num_module * sizeof(*dc->module));
 232     if (!dc->module) return FALSE;
 233     if (is_elf ||
 234         !GetModuleFileNameExA(dc->hProcess, (HMODULE)base,
 235                               dc->module[dc->num_module - 1].name,
 236                               sizeof(dc->module[dc->num_module - 1].name)))
 237         lstrcpynA(dc->module[dc->num_module - 1].name, name,
 238                   sizeof(dc->module[dc->num_module - 1].name));
 239     dc->module[dc->num_module - 1].base = base;
 240     dc->module[dc->num_module - 1].size = size;
 241     dc->module[dc->num_module - 1].timestamp = timestamp;
 242     dc->module[dc->num_module - 1].checksum = checksum;
 243     dc->module[dc->num_module - 1].is_elf = is_elf;
 244
 245     return TRUE;
 246 }
 247
 248 /******************************************************************
 249  *              fetch_pe_module_info_cb
 250  *
 251  * Callback for accumulating in dump_context a PE modules set
 252  */
 253 static BOOL WINAPI fetch_pe_module_info_cb(char* name, DWORD base, DWORD size,
 254                                            void* user)
 255 {
 256     struct dump_context*        dc = (struct dump_context*)user;
 257     IMAGE_NT_HEADERS            nth;
 258
 259     if (pe_load_nt_header(dc->hProcess, base, &nth))
 260         add_module((struct dump_context*)user, name, base, size,
 261                    nth.FileHeader.TimeDateStamp, nth.OptionalHeader.CheckSum,
 262                    FALSE);
 263     return TRUE;
 264 }
 265
 266 /******************************************************************
 267  *              fetch_elf_module_info_cb
 268  *
 269  * Callback for accumulating in dump_context an ELF modules set
 270  */
 271 static BOOL fetch_elf_module_info_cb(const char* name, unsigned long base,
 272                                      void* user)
 273 {
 274     struct dump_context*        dc = (struct dump_context*)user;
 275     DWORD rbase, size, checksum;
 276
 277     /* FIXME: there's no relevant timestamp on ELF modules */
 278     /* NB: if we have a non-null base from the live-target use it (whenever
 279      * the ELF module is relocatable or not). If we have a null base (ELF
 280      * module isn't relocatable) then grab its base address from ELF file
 281      */
 282     if (!elf_fetch_file_info(name, &rbase, &size, &checksum))
 283         size = checksum = 0;
 284     add_module(dc, name, base ? base : rbase, size, 0 /* FIXME */, checksum, TRUE);
 285     return TRUE;
 286 }
 287
 288 static void fetch_module_info(struct dump_context* dc)
 289 {
 290     EnumerateLoadedModules(dc->hProcess, fetch_pe_module_info_cb, dc);
 291     /* Since we include ELF modules in a separate stream from the regular PE ones,
 292      * we can always include those ELF modules (they don't eat lots of space)
 293      * And it's always a good idea to have a trace of the loaded ELF modules for
 294      * a given application in a post mortem debugging condition.
 295      */
 296     elf_enum_modules(dc->hProcess, fetch_elf_module_info_cb, dc);
 297 }
 298
 299 /******************************************************************
 300  *              add_memory_block
 301  *
 302  * Add a memory block to be dumped in a minidump
 303  * If rva is non 0, it's the rva in the minidump where has to be stored
 304  * also the rva of the memory block when written (this allows to reference
 305  * a memory block from outside the list of memory blocks).
 306  */
 307 static void add_memory_block(struct dump_context* dc, ULONG64 base, ULONG size, ULONG rva)
 308 {
 309     if (dc->mem)
 310         dc->mem = HeapReAlloc(GetProcessHeap(), 0, dc->mem,
 311                               ++dc->num_mem * sizeof(*dc->mem));
 312     else
 313         dc->mem = HeapAlloc(GetProcessHeap(), 0, ++dc->num_mem * sizeof(*dc->mem));
 314     if (dc->mem)
 315     {
 316         dc->mem[dc->num_mem - 1].base = base;
 317         dc->mem[dc->num_mem - 1].size = size;
 318         dc->mem[dc->num_mem - 1].rva  = rva;
 319     }
 320     else dc->num_mem = 0;
 321 }
 322
 323 /******************************************************************
 324  *              writeat
 325  *
 326  * Writes a chunk of data at a given position in the minidump
 327  */
 328 static void writeat(struct dump_context* dc, RVA rva, void* data, unsigned size)
 329 {
 330     DWORD       written;
 331
 332     SetFilePointer(dc->hFile, rva, NULL, FILE_BEGIN);
 333     WriteFile(dc->hFile, data, size, &written, NULL);
 334 }
 335
 336 /******************************************************************
 337  *              append
 338  *
 339  * writes a new chunk of data to the minidump, increasing the current
 340  * rva in dc
 341  */
 342 static void append(struct dump_context* dc, void* data, unsigned size)
 343 {
 344     writeat(dc, dc->rva, data, size);
 345     dc->rva += size;
 346 }
 347
 348 /******************************************************************
 349  *              dump_exception_info
 350  *
 351  * Write in File the exception information from pcs
 352  */
 353 static  void    dump_exception_info(struct dump_context* dc,
 354                                     const MINIDUMP_EXCEPTION_INFORMATION* except)
 355 {
 356     MINIDUMP_EXCEPTION_STREAM   mdExcpt;
 357     EXCEPTION_RECORD            rec, *prec;
 358     CONTEXT                     ctx, *pctx;
 359     int                         i;
 360
 361     mdExcpt.ThreadId = except->ThreadId;
 362     mdExcpt.__alignment = 0;
 363     if (except->ClientPointers)
 364     {
 365         EXCEPTION_POINTERS      ep;
 366
 367         ReadProcessMemory(dc->hProcess,
 368                           except->ExceptionPointers, &ep, sizeof(ep), NULL);
 369         ReadProcessMemory(dc->hProcess,
 370                           ep.ExceptionRecord, &rec, sizeof(rec), NULL);
 371         ReadProcessMemory(dc->hProcess,
 372                           ep.ContextRecord, &ctx, sizeof(ctx), NULL);
 373         prec = &rec;
 374         pctx = &ctx;
 375     }
 376     else
 377     {
 378         prec = except->ExceptionPointers->ExceptionRecord;
 379         pctx = except->ExceptionPointers->ContextRecord;
 380     }
 381     mdExcpt.ExceptionRecord.ExceptionCode = prec->ExceptionCode;
 382     mdExcpt.ExceptionRecord.ExceptionFlags = prec->ExceptionFlags;
 383     mdExcpt.ExceptionRecord.ExceptionRecord = (DWORD_PTR)prec->ExceptionRecord;
 384     mdExcpt.ExceptionRecord.ExceptionAddress = (DWORD_PTR)prec->ExceptionAddress;
 385     mdExcpt.ExceptionRecord.NumberParameters = prec->NumberParameters;
 386     mdExcpt.ExceptionRecord.__unusedAlignment = 0;
 387     for (i = 0; i < mdExcpt.ExceptionRecord.NumberParameters; i++)
 388         mdExcpt.ExceptionRecord.ExceptionInformation[i] = (DWORD_PTR)prec->ExceptionInformation[i];
 389     mdExcpt.ThreadContext.DataSize = sizeof(*pctx);
 390     mdExcpt.ThreadContext.Rva = dc->rva + sizeof(mdExcpt);
 391
 392     append(dc, &mdExcpt, sizeof(mdExcpt));
 393     append(dc, pctx, sizeof(*pctx));
 394 }
 395
 396 /******************************************************************
 397  *              dump_modules
 398  *
 399  * Write in File the modules from pcs
 400  */
 401 static  void    dump_modules(struct dump_context* dc, BOOL dump_elf)
 402 {
 403     MINIDUMP_MODULE             mdModule;
 404     MINIDUMP_MODULE_LIST        mdModuleList;
 405     char                        tmp[1024];
 406     MINIDUMP_STRING*            ms = (MINIDUMP_STRING*)tmp;
 407     ULONG                       i, nmod;
 408     RVA                         rva_base;
 409     DWORD                       flags_out;
 410
 411     for (i = nmod = 0; i < dc->num_module; i++)
 412     {
 413         if ((dc->module[i].is_elf && dump_elf) ||
 414             (!dc->module[i].is_elf && !dump_elf))
 415             nmod++;
 416     }
 417
 418     mdModuleList.NumberOfModules = 0;
 419     /* reserve space for mdModuleList
 420      * FIXME: since we don't support 0 length arrays, we cannot use the
 421      * size of mdModuleList
 422      * FIXME: if we don't ask for all modules in cb, we'll get a hole in the file
 423      */
 424     rva_base = dc->rva;
 425     dc->rva += sizeof(mdModuleList.NumberOfModules) + sizeof(mdModule) * nmod;
 426     for (i = 0; i < dc->num_module; i++)
 427     {
 428         if ((dc->module[i].is_elf && !dump_elf) ||
 429             (!dc->module[i].is_elf && dump_elf))
 430             continue;
 431
 432         flags_out = ModuleWriteModule | ModuleWriteMiscRecord | ModuleWriteCvRecord;
 433         if (dc->type & MiniDumpWithDataSegs)
 434             flags_out |= ModuleWriteDataSeg;
 435         if (dc->type & MiniDumpWithProcessThreadData)
 436             flags_out |= ModuleWriteTlsData;
 437         if (dc->type & MiniDumpWithCodeSegs)
 438             flags_out |= ModuleWriteCodeSegs;
 439         ms->Length = MultiByteToWideChar(CP_ACP, 0,
 440                                          dc->module[i].name, -1,
 441                                          NULL, 0) * sizeof(WCHAR);
 442         if (sizeof(ULONG) + ms->Length > sizeof(tmp))
 443             FIXME("Buffer overflow!!!\n");
 444         MultiByteToWideChar(CP_ACP, 0, dc->module[i].name, -1,
 445                             ms->Buffer, ms->Length/sizeof(WCHAR));
 446
 447         if (dc->cb)
 448         {
 449             MINIDUMP_CALLBACK_INPUT     cbin;
 450             MINIDUMP_CALLBACK_OUTPUT    cbout;
 451
 452             cbin.ProcessId = dc->pid;
 453             cbin.ProcessHandle = dc->hProcess;
 454             cbin.CallbackType = ModuleCallback;
 455
 456             cbin.u.Module.FullPath = ms->Buffer;
 457             cbin.u.Module.BaseOfImage = dc->module[i].base;
 458             cbin.u.Module.SizeOfImage = dc->module[i].size;
 459             cbin.u.Module.CheckSum = dc->module[i].checksum;
 460             cbin.u.Module.TimeDateStamp = dc->module[i].timestamp;
 461             memset(&cbin.u.Module.VersionInfo, 0, sizeof(cbin.u.Module.VersionInfo));
 462             cbin.u.Module.CvRecord = NULL;
 463             cbin.u.Module.SizeOfCvRecord = 0;
 464             cbin.u.Module.MiscRecord = NULL;
 465             cbin.u.Module.SizeOfMiscRecord = 0;
 466
 467             cbout.u.ModuleWriteFlags = flags_out;
 468             if (!dc->cb->CallbackRoutine(dc->cb->CallbackParam, &cbin, &cbout))
 469                 continue;
 470             flags_out &= cbout.u.ModuleWriteFlags;
 471         }
 472         if (flags_out & ModuleWriteModule)
 473         {
 474             mdModule.BaseOfImage = dc->module[i].base;
 475             mdModule.SizeOfImage = dc->module[i].size;
 476             mdModule.CheckSum = dc->module[i].checksum;
 477             mdModule.TimeDateStamp = dc->module[i].timestamp;
 478             mdModule.ModuleNameRva = dc->rva;
 479             ms->Length -= sizeof(WCHAR);
 480             append(dc, ms, sizeof(ULONG) + ms->Length);
 481             memset(&mdModule.VersionInfo, 0, sizeof(mdModule.VersionInfo)); /* FIXME */
 482             mdModule.CvRecord.DataSize = 0; /* FIXME */
 483             mdModule.CvRecord.Rva = 0; /* FIXME */
 484             mdModule.MiscRecord.DataSize = 0; /* FIXME */
 485             mdModule.MiscRecord.Rva = 0; /* FIXME */
 486             mdModule.Reserved0 = 0; /* FIXME */
 487             mdModule.Reserved1 = 0; /* FIXME */
 488             writeat(dc,
 489                     rva_base + sizeof(mdModuleList.NumberOfModules) +
 490                         mdModuleList.NumberOfModules++ * sizeof(mdModule),
 491                     &mdModule, sizeof(mdModule));
 492         }
 493     }
 494     writeat(dc, rva_base, &mdModuleList.NumberOfModules,
 495             sizeof(mdModuleList.NumberOfModules));
 496 }
 497
 498 /******************************************************************
 499  *              dump_system_info
 500  *
 501  * Dumps into File the information about the system
 502  */
 503 static  void    dump_system_info(struct dump_context* dc)
 504 {
 505     MINIDUMP_SYSTEM_INFO        mdSysInfo;
 506     SYSTEM_INFO                 sysInfo;
 507     OSVERSIONINFOW              osInfo;
 508     DWORD                       written;
 509     ULONG                       slen;
 510
 511     GetSystemInfo(&sysInfo);
 512     osInfo.dwOSVersionInfoSize = sizeof(osInfo);
 513     GetVersionExW(&osInfo);
 514
 515     mdSysInfo.ProcessorArchitecture = sysInfo.u.s.wProcessorArchitecture;
 516     mdSysInfo.ProcessorLevel = sysInfo.wProcessorLevel;
 517     mdSysInfo.ProcessorRevision = sysInfo.wProcessorRevision;
 518     mdSysInfo.u.s.NumberOfProcessors = sysInfo.dwNumberOfProcessors;
 519     mdSysInfo.u.s.ProductType = VER_NT_WORKSTATION; /* FIXME */
 520     mdSysInfo.MajorVersion = osInfo.dwMajorVersion;
 521     mdSysInfo.MinorVersion = osInfo.dwMinorVersion;
 522     mdSysInfo.BuildNumber = osInfo.dwBuildNumber;
 523     mdSysInfo.PlatformId = osInfo.dwPlatformId;
 524
 525     mdSysInfo.CSDVersionRva = dc->rva + sizeof(mdSysInfo);
 526     mdSysInfo.u1.Reserved1 = 0;
 527
 528     memset(&mdSysInfo.Cpu, 0, sizeof(mdSysInfo.Cpu));
 529
 530     append(dc, &mdSysInfo, sizeof(mdSysInfo));
 531
 532     slen = lstrlenW(osInfo.szCSDVersion) * sizeof(WCHAR);
 533     WriteFile(dc->hFile, &slen, sizeof(slen), &written, NULL);
 534     WriteFile(dc->hFile, osInfo.szCSDVersion, slen, &written, NULL);
 535     dc->rva += sizeof(ULONG) + slen;
 536 }
 537
 538 /******************************************************************
 539  *              dump_threads
 540  *
 541  * Dumps into File the information about running threads
 542  */
 543 static  void    dump_threads(struct dump_context* dc,
 544                              const MINIDUMP_EXCEPTION_INFORMATION* except)
 545 {
 546     MINIDUMP_THREAD             mdThd;
 547     MINIDUMP_THREAD_LIST        mdThdList;
 548     unsigned                    i;
 549     RVA                         rva_base;
 550     DWORD                       flags_out;
 551     CONTEXT                     ctx;
 552
 553     mdThdList.NumberOfThreads = 0;
 554
 555     rva_base = dc->rva;
 556     dc->rva += sizeof(mdThdList.NumberOfThreads) +
 557         dc->spi->dwThreadCount * sizeof(mdThd);
 558
 559     for (i = 0; i < dc->spi->dwThreadCount; i++)
 560     {
 561         fetch_thread_info(dc, i, except, &mdThd, &ctx);
 562
 563         flags_out = ThreadWriteThread | ThreadWriteStack | ThreadWriteContext |
 564             ThreadWriteInstructionWindow;
 565         if (dc->type & MiniDumpWithProcessThreadData)
 566             flags_out |= ThreadWriteThreadData;
 567         if (dc->type & MiniDumpWithThreadInfo)
 568             flags_out |= ThreadWriteThreadInfo;
 569
 570         if (dc->cb)
 571         {
 572             MINIDUMP_CALLBACK_INPUT     cbin;
 573             MINIDUMP_CALLBACK_OUTPUT    cbout;
 574
 575             cbin.ProcessId = dc->pid;
 576             cbin.ProcessHandle = dc->hProcess;
 577             cbin.CallbackType = ThreadCallback;
 578             cbin.u.Thread.ThreadId = dc->spi->ti[i].dwThreadID;
 579             cbin.u.Thread.ThreadHandle = 0; /* FIXME */
 580             memcpy(&cbin.u.Thread.Context, &ctx, sizeof(CONTEXT));
 581             cbin.u.Thread.SizeOfContext = sizeof(CONTEXT);
 582             cbin.u.Thread.StackBase = mdThd.Stack.StartOfMemoryRange;
 583             cbin.u.Thread.StackEnd = mdThd.Stack.StartOfMemoryRange +
 584                 mdThd.Stack.Memory.DataSize;
 585
 586             cbout.u.ThreadWriteFlags = flags_out;
 587             if (!dc->cb->CallbackRoutine(dc->cb->CallbackParam, &cbin, &cbout))
 588                 continue;
 589             flags_out &= cbout.u.ThreadWriteFlags;
 590         }
 591         if (flags_out & ThreadWriteThread)
 592         {
 593             if (ctx.ContextFlags && (flags_out & ThreadWriteContext))
 594             {
 595                 mdThd.ThreadContext.Rva = dc->rva;
 596                 mdThd.ThreadContext.DataSize = sizeof(CONTEXT);
 597                 append(dc, &ctx, sizeof(CONTEXT));
 598             }
 599             if (mdThd.Stack.Memory.DataSize && (flags_out & ThreadWriteStack))
 600             {
 601                 add_memory_block(dc, mdThd.Stack.StartOfMemoryRange,
 602                                  mdThd.Stack.Memory.DataSize,
 603                                  rva_base + sizeof(mdThdList.NumberOfThreads) +
 604                                      mdThdList.NumberOfThreads * sizeof(mdThd) +
 605                                      FIELD_OFFSET(MINIDUMP_THREAD, Stack.Memory.Rva));
 606             }
 607             writeat(dc,
 608                     rva_base + sizeof(mdThdList.NumberOfThreads) +
 609                         mdThdList.NumberOfThreads * sizeof(mdThd),
 610                     &mdThd, sizeof(mdThd));
 611             mdThdList.NumberOfThreads++;
 612         }
 613         if (ctx.ContextFlags && (flags_out & ThreadWriteInstructionWindow))
 614         {
 615             /* FIXME: - Native dbghelp also dumps 0x80 bytes around EIP
 616              *        - also crop values across module boundaries,
 617              *        - and don't make it i386 dependent
 618              */
 619             /* add_memory_block(dc, ctx.Eip - 0x80, ctx.Eip + 0x80, 0); */
 620         }
 621     }
 622     writeat(dc, rva_base,
 623             &mdThdList.NumberOfThreads, sizeof(mdThdList.NumberOfThreads));
 624 }
 625
 626 /******************************************************************
 627  *              dump_memory_info
 628  *
 629  * dumps information about the memory of the process (stack of the threads)
 630  */
 631 static void dump_memory_info(struct dump_context* dc)
 632 {
 633     MINIDUMP_MEMORY_LIST        mdMemList;
 634     MINIDUMP_MEMORY_DESCRIPTOR  mdMem;
 635     DWORD                       written;
 636     unsigned                    i, pos, len;
 637     RVA                         rva_base;
 638     char                        tmp[1024];
 639
 640     mdMemList.NumberOfMemoryRanges = dc->num_mem;
 641     append(dc, &mdMemList.NumberOfMemoryRanges,
 642            sizeof(mdMemList.NumberOfMemoryRanges));
 643     rva_base = dc->rva;
 644     dc->rva += mdMemList.NumberOfMemoryRanges * sizeof(mdMem);
 645
 646     for (i = 0; i < dc->num_mem; i++)
 647     {
 648         mdMem.StartOfMemoryRange = dc->mem[i].base;
 649         mdMem.Memory.Rva = dc->rva;
 650         mdMem.Memory.DataSize = dc->mem[i].size;
 651         SetFilePointer(dc->hFile, dc->rva, NULL, FILE_BEGIN);
 652         for (pos = 0; pos < dc->mem[i].size; pos += sizeof(tmp))
 653         {
 654             len = min(dc->mem[i].size - pos, sizeof(tmp));
 655             if (ReadProcessMemory(dc->hProcess,
 656                                   (void*)(ULONG)(dc->mem[i].base + pos),
 657                                   tmp, len, NULL))
 658                 WriteFile(dc->hFile, tmp, len, &written, NULL);
 659         }
 660         dc->rva += mdMem.Memory.DataSize;
 661         writeat(dc, rva_base + i * sizeof(mdMem), &mdMem, sizeof(mdMem));
 662         if (dc->mem[i].rva)
 663         {
 664             writeat(dc, dc->mem[i].rva, &mdMem.Memory.Rva, sizeof(mdMem.Memory.Rva));
 665         }
 666     }
 667 }
 668
 669 static void dump_misc_info(struct dump_context* dc)
 670 {
 671     MINIDUMP_MISC_INFO  mmi;
 672
 673     mmi.SizeOfInfo = sizeof(mmi);
 674     mmi.Flags1 = MINIDUMP_MISC1_PROCESS_ID;
 675     mmi.ProcessId = dc->pid;
 676     /* FIXME: create/user/kernel time */
 677     append(dc, &mmi, sizeof(mmi));
 678 }
 679
 680 /******************************************************************
 681  *              MiniDumpWriteDump (DEBUGHLP.@)
 682  *
 683  */
 684 BOOL WINAPI MiniDumpWriteDump(HANDLE hProcess, DWORD pid, HANDLE hFile,
 685                               MINIDUMP_TYPE DumpType,
 686                               PMINIDUMP_EXCEPTION_INFORMATION ExceptionParam,
 687                               PMINIDUMP_USER_STREAM_INFORMATION UserStreamParam,
 688                               PMINIDUMP_CALLBACK_INFORMATION CallbackParam)
 689 {
 690     MINIDUMP_HEADER     mdHead;
 691     MINIDUMP_DIRECTORY  mdDir;
 692     DWORD               i, nStreams, idx_stream;
 693     struct dump_context dc;
 694
 695     dc.hProcess = hProcess;
 696     dc.hFile = hFile;
 697     dc.pid = pid;
 698     dc.module = NULL;
 699     dc.num_module = 0;
 700     dc.cb = CallbackParam;
 701     dc.type = DumpType;
 702     dc.mem = NULL;
 703     dc.num_mem = 0;
 704     dc.rva = 0;
 705
 706     if (!fetch_process_info(&dc)) return FALSE;
 707     fetch_module_info(&dc);
 708
 709     /* 1) init */
 710     nStreams = 6 + (ExceptionParam ? 1 : 0) +
 711         (UserStreamParam ? UserStreamParam->UserStreamCount : 0);
 712
 713     if (DumpType & MiniDumpWithDataSegs)
 714         FIXME("NIY MiniDumpWithDataSegs\n");
 715     if (DumpType & MiniDumpWithFullMemory)
 716         FIXME("NIY MiniDumpWithFullMemory\n");
 717     if (DumpType & MiniDumpWithHandleData)
 718         FIXME("NIY MiniDumpWithHandleData\n");
 719     if (DumpType & MiniDumpFilterMemory)
 720         FIXME("NIY MiniDumpFilterMemory\n");
 721     if (DumpType & MiniDumpScanMemory)
 722         FIXME("NIY MiniDumpScanMemory\n");
 723
 724     /* 2) write header */
 725     mdHead.Signature = MINIDUMP_SIGNATURE;
 726     mdHead.Version = MINIDUMP_VERSION;
 727     mdHead.NumberOfStreams = nStreams;
 728     mdHead.StreamDirectoryRva = sizeof(mdHead);
 729     mdHead.u.TimeDateStamp = time(NULL);
 730     mdHead.Flags = DumpType;
 731     append(&dc, &mdHead, sizeof(mdHead));
 732
 733     /* 3) write stream directories */
 734     dc.rva += nStreams * sizeof(mdDir);
 735     idx_stream = 0;
 736
 737     /* 3.1) write data stream directories */
 738
 739     mdDir.StreamType = ThreadListStream;
 740     mdDir.Location.Rva = dc.rva;
 741     dump_threads(&dc, ExceptionParam);
 742     mdDir.Location.DataSize = dc.rva - mdDir.Location.Rva;
 743     writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 744             &mdDir, sizeof(mdDir));
 745
 746     mdDir.StreamType = ModuleListStream;
 747     mdDir.Location.Rva = dc.rva;
 748     dump_modules(&dc, FALSE);
 749     mdDir.Location.DataSize = dc.rva - mdDir.Location.Rva;
 750     writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 751             &mdDir, sizeof(mdDir));
 752
 753     mdDir.StreamType = 0xfff0; /* FIXME: this is part of MS reserved streams */
 754     mdDir.Location.Rva = dc.rva;
 755     dump_modules(&dc, TRUE);
 756     mdDir.Location.DataSize = dc.rva - mdDir.Location.Rva;
 757     writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 758             &mdDir, sizeof(mdDir));
 759
 760     mdDir.StreamType = MemoryListStream;
 761     mdDir.Location.Rva = dc.rva;
 762     dump_memory_info(&dc);
 763     mdDir.Location.DataSize = dc.rva - mdDir.Location.Rva;
 764     writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 765             &mdDir, sizeof(mdDir));
 766
 767     mdDir.StreamType = SystemInfoStream;
 768     mdDir.Location.Rva = dc.rva;
 769     dump_system_info(&dc);
 770     mdDir.Location.DataSize = dc.rva - mdDir.Location.Rva;
 771     writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 772             &mdDir, sizeof(mdDir));
 773
 774     mdDir.StreamType = MiscInfoStream;
 775     mdDir.Location.Rva = dc.rva;
 776     dump_misc_info(&dc);
 777     mdDir.Location.DataSize = dc.rva - mdDir.Location.Rva;
 778     writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 779             &mdDir, sizeof(mdDir));
 780
 781     /* 3.2) write exception information (if any) */
 782     if (ExceptionParam)
 783     {
 784         mdDir.StreamType = ExceptionStream;
 785         mdDir.Location.Rva = dc.rva;
 786         dump_exception_info(&dc, ExceptionParam);
 787         mdDir.Location.DataSize = dc.rva - mdDir.Location.Rva;
 788         writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 789                 &mdDir, sizeof(mdDir));
 790     }
 791
 792     /* 3.3) write user defined streams (if any) */
 793     if (UserStreamParam)
 794     {
 795         for (i = 0; i < UserStreamParam->UserStreamCount; i++)
 796         {
 797             mdDir.StreamType = UserStreamParam->UserStreamArray[i].Type;
 798             mdDir.Location.DataSize = UserStreamParam->UserStreamArray[i].BufferSize;
 799             mdDir.Location.Rva = dc.rva;
 800             writeat(&dc, mdHead.StreamDirectoryRva + idx_stream++ * sizeof(mdDir),
 801                     &mdDir, sizeof(mdDir));
 802             append(&dc, UserStreamParam->UserStreamArray[i].Buffer,
 803                    UserStreamParam->UserStreamArray[i].BufferSize);
 804         }
 805     }
 806
 807     HeapFree(GetProcessHeap(), 0, dc.pcs_buffer);
 808     HeapFree(GetProcessHeap(), 0, dc.mem);
 809     HeapFree(GetProcessHeap(), 0, dc.module);
 810
 811     return TRUE;
 812 }
 813
 814 /******************************************************************
 815  *              MiniDumpReadDumpStream (DEBUGHLP.@)
 816  *
 817  *
 818  */
 819 BOOL WINAPI MiniDumpReadDumpStream(void* base, ULONG str_idx,
 820                                    PMINIDUMP_DIRECTORY* pdir,
 821                                    void** stream, ULONG* size)
 822 {
 823     MINIDUMP_HEADER*    mdHead = (MINIDUMP_HEADER*)base;
 824
 825     if (mdHead->Signature == MINIDUMP_SIGNATURE)
 826     {
 827         MINIDUMP_DIRECTORY* dir;
 828         int                 i;
 829
 830         dir = (MINIDUMP_DIRECTORY*)((char*)base + mdHead->StreamDirectoryRva);
 831         for (i = 0; i < mdHead->NumberOfStreams; i++, dir++)
 832         {
 833             if (dir->StreamType == str_idx)
 834             {
 835                 *pdir = dir;
 836                 *stream = (char*)base + dir->Location.Rva;
 837                 *size = dir->Location.DataSize;
 838                 return TRUE;
 839             }
 840         }
 841     }
 842     SetLastError(ERROR_INVALID_PARAMETER);
 843     return FALSE;
 844 }