dlls/dbghelp/dbghelp.c

   1 /*
   2  * File dbghelp.c - generic routines (process) for dbghelp DLL
   3  *
   4  * Copyright (C) 2004, 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 "config.h"
  22
  23 #include "dbghelp_private.h"
  24 #include "winerror.h"
  25 #include "psapi.h"
  26 #include "wine/debug.h"
  27 #include "wdbgexts.h"
  28 #include "winnls.h"
  29
  30 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  31
  32 /* TODO
  33  *  - support for symbols' types is still partly missing
  34  *      + C++ support
  35  *      + we should store the underlying type for an enum in the symt_enum struct
  36  *      + for enums, we store the names & values (associated to the enum type),
  37  *        but those values are not directly usable from a debugger (that's why, I
  38  *        assume, that we have also to define constants for enum values, as
  39  *        Codeview does BTW.
  40  *      + SymEnumTypes should only return *user* defined types (UDT, typedefs...) not
  41  *        all the types stored/used in the modules (like char*)
  42  *  - SymGetLine{Next|Prev} don't work as expected (they don't seem to work across
  43  *    functions, and even across function blocks...). Basically, for *Next* to work
  44  *    it requires an address after the prolog of the func (the base address of the
  45  *    func doesn't work)
  46  *  - most options (dbghelp_options) are not used (loading lines...)
  47  *  - in symbol lookup by name, we don't use RE everywhere we should. Moreover, when
  48  *    we're supposed to use RE, it doesn't make use of our hash tables. Therefore,
  49  *    we could use hash if name isn't a RE, and fall back to a full search when we
  50  *    get a full RE
  51  *  - msc:
  52  *      + we should add parameters' types to the function's signature
  53  *        while processing a function's parameters
  54  *      + add support for function-less labels (as MSC seems to define them)
  55  *      + C++ management
  56  *  - stabs:
  57  *      + when, in a same module, the same definition is used in several compilation
  58  *        units, we get several definitions of the same object (especially
  59  *        struct/union). we should find a way not to duplicate them
  60  *      + in some cases (dlls/user/dialog16.c DIALOG_GetControl16), the same static
  61  *        global variable is defined several times (at different scopes). We are
  62  *        getting several of those while looking for a unique symbol. Part of the
  63  *        issue is that we don't give a scope to a static variable inside a function
  64  *      + C++ management
  65  */
  66
  67 unsigned   dbghelp_options = SYMOPT_UNDNAME;
  68 HANDLE     hMsvcrt = NULL;
  69
  70 /***********************************************************************
  71  *           DllMain (DEBUGHLP.@)
  72  */
  73 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  74 {
  75     switch (fdwReason)
  76     {
  77     case DLL_PROCESS_ATTACH:    break;
  78     case DLL_PROCESS_DETACH:
  79         if (hMsvcrt) FreeLibrary(hMsvcrt);
  80         break;
  81     case DLL_THREAD_ATTACH:     break;
  82     case DLL_THREAD_DETACH:     break;
  83     default:                    break;
  84     }
  85     return TRUE;
  86 }
  87
  88 static struct process* process_first /* = NULL */;
  89
  90 /******************************************************************
  91  *              process_find_by_handle
  92  *
  93  */
  94 struct process*    process_find_by_handle(HANDLE hProcess)
  95 {
  96     struct process* p;
  97
  98     for (p = process_first; p && p->handle != hProcess; p = p->next);
  99     if (!p) SetLastError(ERROR_INVALID_HANDLE);
 100     return p;
 101 }
 102
 103 /******************************************************************
 104  *             validate_addr64 (internal)
 105  *
 106  */
 107 BOOL validate_addr64(DWORD64 addr)
 108 {
 109     if (addr >> 32)
 110     {
 111         FIXME("Unsupported address %s\n", wine_dbgstr_longlong(addr));
 112         SetLastError(ERROR_INVALID_PARAMETER);
 113         return FALSE;
 114     }
 115     return TRUE;
 116 }
 117
 118 /******************************************************************
 119  *              fetch_buffer
 120  *
 121  * Ensures process' internal buffer is large enough.
 122  */
 123 void* fetch_buffer(struct process* pcs, unsigned size)
 124 {
 125     if (size > pcs->buffer_size)
 126     {
 127         if (pcs->buffer)
 128             pcs->buffer = HeapReAlloc(GetProcessHeap(), 0, pcs->buffer, size);
 129         else
 130             pcs->buffer = HeapAlloc(GetProcessHeap(), 0, size);
 131         pcs->buffer_size = (pcs->buffer) ? size : 0;
 132     }
 133     return pcs->buffer;
 134 }
 135
 136 /******************************************************************
 137  *              SymSetSearchPathW (DBGHELP.@)
 138  *
 139  */
 140 BOOL WINAPI SymSetSearchPathW(HANDLE hProcess, PCWSTR searchPath)
 141 {
 142     struct process* pcs = process_find_by_handle(hProcess);
 143
 144     if (!pcs) return FALSE;
 145     if (!searchPath) return FALSE;
 146
 147     HeapFree(GetProcessHeap(), 0, pcs->search_path);
 148     pcs->search_path = lstrcpyW(HeapAlloc(GetProcessHeap(), 0,
 149                                           (lstrlenW(searchPath) + 1) * sizeof(WCHAR)),
 150                                 searchPath);
 151     return TRUE;
 152 }
 153
 154 /******************************************************************
 155  *              SymSetSearchPath (DBGHELP.@)
 156  *
 157  */
 158 BOOL WINAPI SymSetSearchPath(HANDLE hProcess, PCSTR searchPath)
 159 {
 160     BOOL        ret = FALSE;
 161     unsigned    len;
 162     WCHAR*      sp;
 163
 164     len = MultiByteToWideChar(CP_ACP, 0, searchPath, -1, NULL, 0);
 165     if ((sp = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR))))
 166     {
 167         MultiByteToWideChar(CP_ACP, 0, searchPath, -1, sp, len);
 168
 169         ret = SymSetSearchPathW(hProcess, sp);
 170         HeapFree(GetProcessHeap(), 0, sp);
 171     }
 172     return ret;
 173 }
 174
 175 /***********************************************************************
 176  *              SymGetSearchPathW (DBGHELP.@)
 177  */
 178 BOOL WINAPI SymGetSearchPathW(HANDLE hProcess, LPWSTR szSearchPath,
 179                               DWORD SearchPathLength)
 180 {
 181     struct process* pcs = process_find_by_handle(hProcess);
 182     if (!pcs) return FALSE;
 183
 184     lstrcpynW(szSearchPath, pcs->search_path, SearchPathLength);
 185     return TRUE;
 186 }
 187
 188 /***********************************************************************
 189  *              SymGetSearchPath (DBGHELP.@)
 190  */
 191 BOOL WINAPI SymGetSearchPath(HANDLE hProcess, LPSTR szSearchPath,
 192                              DWORD SearchPathLength)
 193 {
 194     WCHAR*      buffer = HeapAlloc(GetProcessHeap(), 0, SearchPathLength);
 195     BOOL        ret = FALSE;
 196
 197     if (buffer)
 198     {
 199         ret = SymGetSearchPathW(hProcess, buffer,
 200                                 SearchPathLength * sizeof(WCHAR));
 201         if (ret)
 202             WideCharToMultiByte(CP_ACP, 0, buffer, SearchPathLength,
 203                                 szSearchPath, SearchPathLength, NULL, NULL);
 204         HeapFree(GetProcessHeap(), 0, buffer);
 205     }
 206     return ret;
 207 }
 208
 209 /******************************************************************
 210  *              invade_process
 211  *
 212  * SymInitialize helper: loads in dbghelp all known (and loaded modules)
 213  * this assumes that hProcess is a handle on a valid process
 214  */
 215 static BOOL WINAPI process_invade_cb(char* name, DWORD base, DWORD size, void* user)
 216 {
 217     char        tmp[MAX_PATH];
 218     HANDLE      hProcess = (HANDLE)user;
 219
 220     if (!GetModuleFileNameExA(hProcess, (HMODULE)base,
 221                               tmp, sizeof(tmp)))
 222         lstrcpynA(tmp, name, sizeof(tmp));
 223
 224     SymLoadModule(hProcess, 0, tmp, name, base, size);
 225     return TRUE;
 226 }
 227
 228 /******************************************************************
 229  *              check_live_target
 230  *
 231  */
 232 static BOOL check_live_target(struct process* pcs)
 233 {
 234     if (!GetProcessId(pcs->handle)) return FALSE;
 235     if (GetEnvironmentVariableA("DBGHELP_NOLIVE", NULL, 0)) return FALSE;
 236     elf_read_wine_loader_dbg_info(pcs);
 237     return TRUE;
 238 }
 239
 240 /******************************************************************
 241  *              SymInitializeW (DBGHELP.@)
 242  *
 243  * The initialisation of a dbghelp's context.
 244  * Note that hProcess doesn't need to be a valid process handle (except
 245  * when fInvadeProcess is TRUE).
 246  * Since, we're also allow to load ELF (pure) libraries and Wine ELF libraries
 247  * containing PE (and NE) module(s), here's how we handle it:
 248  * - we load every module (ELF, NE, PE) passed in SymLoadModule
 249  * - in fInvadeProcess (in SymInitialize) is TRUE, we set up what is called ELF
 250  *   synchronization: hProcess should be a valid process handle, and we hook
 251  *   ourselves on hProcess's loaded ELF-modules, and keep this list in sync with
 252  *   our internal ELF modules representation (loading / unloading). This way,
 253  *   we'll pair every loaded builtin PE module with its ELF counterpart (and
 254  *   access its debug information).
 255  * - if fInvadeProcess (in SymInitialize) is FALSE, we check anyway if the
 256  *   hProcess refers to a running process. We use some heuristics here, so YMMV.
 257  *   If we detect a live target, then we get the same handling as if
 258  *   fInvadeProcess is TRUE (except that the modules are not loaded). Otherwise,
 259  *   we won't be able to make the peering between a builtin PE module and its ELF
 260  *   counterpart. Hence we won't be able to provide the requested debug
 261  *   information. We'll however be able to load native PE modules (and their
 262  *   debug information) without any trouble.
 263  * Note also that this scheme can be intertwined with the deferred loading
 264  * mechanism (ie only load the debug information when we actually need it).
 265  */
 266 BOOL WINAPI SymInitializeW(HANDLE hProcess, PCWSTR UserSearchPath, BOOL fInvadeProcess)
 267 {
 268     struct process*     pcs;
 269
 270     TRACE("(%p %s %u)\n", hProcess, debugstr_w(UserSearchPath), fInvadeProcess);
 271
 272     if (process_find_by_handle(hProcess))
 273         FIXME("what to do ??\n");
 274
 275     pcs = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*pcs));
 276     if (!pcs) return FALSE;
 277
 278     pcs->handle = hProcess;
 279
 280     if (UserSearchPath)
 281     {
 282         pcs->search_path = lstrcpyW(HeapAlloc(GetProcessHeap(), 0,
 283                                               (lstrlenW(UserSearchPath) + 1) * sizeof(WCHAR)),
 284                                     UserSearchPath);
 285     }
 286     else
 287     {
 288         unsigned        size;
 289         unsigned        len;
 290         static const WCHAR      sym_path[] = {'_','N','T','_','S','Y','M','B','O','L','_','P','A','T','H',0};
 291         static const WCHAR      alt_sym_path[] = {'_','N','T','_','A','L','T','E','R','N','A','T','E','_','S','Y','M','B','O','L','_','P','A','T','H',0};
 292
 293         pcs->search_path = HeapAlloc(GetProcessHeap(), 0, (len = MAX_PATH) * sizeof(WCHAR));
 294         while ((size = GetCurrentDirectoryW(len, pcs->search_path)) >= len)
 295             pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (len *= 2) * sizeof(WCHAR));
 296         pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (size + 1) * sizeof(WCHAR));
 297
 298         len = GetEnvironmentVariableW(sym_path, NULL, 0);
 299         if (len)
 300         {
 301             pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (size + 1 + len + 1) * sizeof(WCHAR));
 302             pcs->search_path[size] = ';';
 303             GetEnvironmentVariableW(sym_path, pcs->search_path + size + 1, len);
 304             size += 1 + len;
 305         }
 306         len = GetEnvironmentVariableW(alt_sym_path, NULL, 0);
 307         if (len)
 308         {
 309             pcs->search_path = HeapReAlloc(GetProcessHeap(), 0, pcs->search_path, (size + 1 + len + 1) * sizeof(WCHAR));
 310             pcs->search_path[size] = ';';
 311             GetEnvironmentVariableW(alt_sym_path, pcs->search_path + size + 1, len);
 312             size += 1 + len;
 313         }
 314     }
 315
 316     pcs->lmodules = NULL;
 317     pcs->dbg_hdr_addr = 0;
 318     pcs->next = process_first;
 319     process_first = pcs;
 320
 321     if (check_live_target(pcs))
 322     {
 323         if (fInvadeProcess)
 324             EnumerateLoadedModules(hProcess, process_invade_cb, (void*)hProcess);
 325         elf_synchronize_module_list(pcs);
 326     }
 327     else if (fInvadeProcess)
 328     {
 329         SymCleanup(hProcess);
 330         SetLastError(ERROR_INVALID_PARAMETER);
 331         return FALSE;
 332     }
 333
 334     return TRUE;
 335 }
 336
 337 /******************************************************************
 338  *              SymInitialize (DBGHELP.@)
 339  *
 340  *
 341  */
 342 BOOL WINAPI SymInitialize(HANDLE hProcess, PCSTR UserSearchPath, BOOL fInvadeProcess)
 343 {
 344     WCHAR*              sp = NULL;
 345     BOOL                ret;
 346
 347     if (UserSearchPath)
 348     {
 349         unsigned len;
 350
 351         len = MultiByteToWideChar(CP_ACP, 0, UserSearchPath, -1, NULL, 0);
 352         sp = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 353         MultiByteToWideChar(CP_ACP, 0, UserSearchPath, -1, sp, len);
 354     }
 355
 356     ret = SymInitializeW(hProcess, sp, fInvadeProcess);
 357     HeapFree(GetProcessHeap(), 0, sp);
 358     return ret;
 359 }
 360
 361 /******************************************************************
 362  *              SymCleanup (DBGHELP.@)
 363  *
 364  */
 365 BOOL WINAPI SymCleanup(HANDLE hProcess)
 366 {
 367     struct process**    ppcs;
 368     struct process*     next;
 369
 370     for (ppcs = &process_first; *ppcs; ppcs = &(*ppcs)->next)
 371     {
 372         if ((*ppcs)->handle == hProcess)
 373         {
 374             while ((*ppcs)->lmodules) module_remove(*ppcs, (*ppcs)->lmodules);
 375
 376             HeapFree(GetProcessHeap(), 0, (*ppcs)->search_path);
 377             next = (*ppcs)->next;
 378             HeapFree(GetProcessHeap(), 0, *ppcs);
 379             *ppcs = next;
 380             return TRUE;
 381         }
 382     }
 383     return FALSE;
 384 }
 385
 386 /******************************************************************
 387  *              SymSetOptions (DBGHELP.@)
 388  *
 389  */
 390 DWORD WINAPI SymSetOptions(DWORD opts)
 391 {
 392     struct process* pcs;
 393
 394     for (pcs = process_first; pcs; pcs = pcs->next)
 395     {
 396         pcs_callback(pcs, CBA_SET_OPTIONS, &opts);
 397     }
 398     return dbghelp_options = opts;
 399 }
 400
 401 /******************************************************************
 402  *              SymGetOptions (DBGHELP.@)
 403  *
 404  */
 405 DWORD WINAPI SymGetOptions(void)
 406 {
 407     return dbghelp_options;
 408 }
 409
 410 /******************************************************************
 411  *              SymSetParentWindow (DBGHELP.@)
 412  *
 413  */
 414 BOOL WINAPI SymSetParentWindow(HWND hwnd)
 415 {
 416     /* Save hwnd so it can be used as parent window */
 417     FIXME("(%p): stub\n", hwnd);
 418     return TRUE;
 419 }
 420
 421 /******************************************************************
 422  *              SymSetContext (DBGHELP.@)
 423  *
 424  */
 425 BOOL WINAPI SymSetContext(HANDLE hProcess, PIMAGEHLP_STACK_FRAME StackFrame,
 426                           PIMAGEHLP_CONTEXT Context)
 427 {
 428     struct process* pcs = process_find_by_handle(hProcess);
 429     if (!pcs) return FALSE;
 430
 431     if (pcs->ctx_frame.ReturnOffset == StackFrame->ReturnOffset &&
 432         pcs->ctx_frame.FrameOffset  == StackFrame->FrameOffset  &&
 433         pcs->ctx_frame.StackOffset  == StackFrame->StackOffset)
 434     {
 435         TRACE("Setting same frame {rtn=%s frm=%s stk=%s}\n",
 436               wine_dbgstr_longlong(pcs->ctx_frame.ReturnOffset),
 437               wine_dbgstr_longlong(pcs->ctx_frame.FrameOffset),
 438               wine_dbgstr_longlong(pcs->ctx_frame.StackOffset));
 439         pcs->ctx_frame.InstructionOffset = StackFrame->InstructionOffset;
 440         SetLastError(ERROR_ACCESS_DENIED); /* latest MSDN says ERROR_SUCCESS */
 441         return FALSE;
 442     }
 443
 444     pcs->ctx_frame = *StackFrame;
 445     /* MSDN states that Context is not (no longer?) used */
 446     return TRUE;
 447 }
 448
 449 /******************************************************************
 450  *              reg_cb64to32 (internal)
 451  *
 452  * Registered callback for converting information from 64 bit to 32 bit
 453  */
 454 static BOOL CALLBACK reg_cb64to32(HANDLE hProcess, ULONG action, ULONG64 data, ULONG64 user)
 455 {
 456     PSYMBOL_REGISTERED_CALLBACK         cb32 = (PSYMBOL_REGISTERED_CALLBACK)(DWORD)(user >> 32);
 457     DWORD                               user32 = (DWORD)user;
 458     void*                               data32;
 459     IMAGEHLP_DEFERRED_SYMBOL_LOAD64*    idsl64;
 460     IMAGEHLP_DEFERRED_SYMBOL_LOAD       idsl;
 461
 462     switch (action)
 463     {
 464     case CBA_DEBUG_INFO:
 465     case CBA_DEFERRED_SYMBOL_LOAD_CANCEL:
 466     case CBA_SET_OPTIONS:
 467     case CBA_SYMBOLS_UNLOADED:
 468         data32 = (void*)(DWORD)data;
 469         break;
 470     case CBA_DEFERRED_SYMBOL_LOAD_COMPLETE:
 471     case CBA_DEFERRED_SYMBOL_LOAD_FAILURE:
 472     case CBA_DEFERRED_SYMBOL_LOAD_PARTIAL:
 473     case CBA_DEFERRED_SYMBOL_LOAD_START:
 474         idsl64 = (IMAGEHLP_DEFERRED_SYMBOL_LOAD64*)(DWORD)data;
 475         if (!validate_addr64(idsl64->BaseOfImage))
 476             return FALSE;
 477         idsl.SizeOfStruct = sizeof(idsl);
 478         idsl.BaseOfImage = (DWORD)idsl64->BaseOfImage;
 479         idsl.CheckSum = idsl64->CheckSum;
 480         idsl.TimeDateStamp = idsl64->TimeDateStamp;
 481         memcpy(idsl.FileName, idsl64->FileName, sizeof(idsl.FileName));
 482         idsl.Reparse = idsl64->Reparse;
 483         data32 = &idsl;
 484         break;
 485     case CBA_DUPLICATE_SYMBOL:
 486     case CBA_EVENT:
 487     case CBA_READ_MEMORY:
 488     default:
 489         FIXME("No mapping for action %u\n", action);
 490         return FALSE;
 491     }
 492     return cb32(hProcess, action, (PVOID)data32, (PVOID)user32);
 493 }
 494
 495 /******************************************************************
 496  *              pcs_callback (internal)
 497  */
 498 BOOL pcs_callback(const struct process* pcs, ULONG action, void* data)
 499 {
 500     TRACE("%p %u %p\n", pcs, action, data);
 501
 502     if (!pcs->reg_cb) return FALSE;
 503     if (pcs->reg_is_unicode)
 504     {
 505         IMAGEHLP_DEFERRED_SYMBOL_LOAD64*    idsl;
 506         IMAGEHLP_DEFERRED_SYMBOL_LOADW64    idslW;
 507
 508         switch (action)
 509         {
 510         case CBA_DEBUG_INFO:
 511         case CBA_DEFERRED_SYMBOL_LOAD_CANCEL:
 512         case CBA_SET_OPTIONS:
 513         case CBA_SYMBOLS_UNLOADED:
 514             break;
 515         case CBA_DEFERRED_SYMBOL_LOAD_COMPLETE:
 516         case CBA_DEFERRED_SYMBOL_LOAD_FAILURE:
 517         case CBA_DEFERRED_SYMBOL_LOAD_PARTIAL:
 518         case CBA_DEFERRED_SYMBOL_LOAD_START:
 519             idsl = (IMAGEHLP_DEFERRED_SYMBOL_LOAD64*)(DWORD)data;
 520             idslW.SizeOfStruct = sizeof(idslW);
 521             idslW.BaseOfImage = idsl->BaseOfImage;
 522             idslW.CheckSum = idsl->CheckSum;
 523             idslW.TimeDateStamp = idsl->TimeDateStamp;
 524             MultiByteToWideChar(CP_ACP, 0, idsl->FileName, -1,
 525                                 idslW.FileName, sizeof(idslW.FileName) / sizeof(WCHAR));
 526             idslW.Reparse = idsl->Reparse;
 527             data = &idslW;
 528             break;
 529         case CBA_DUPLICATE_SYMBOL:
 530         case CBA_EVENT:
 531         case CBA_READ_MEMORY:
 532         default:
 533             FIXME("No mapping for action %u\n", action);
 534             return FALSE;
 535         }
 536     }
 537     return pcs->reg_cb(pcs->handle, action, (ULONG64)(DWORD_PTR)data, pcs->reg_user);
 538 }
 539
 540 /******************************************************************
 541  *              sym_register_cb
 542  *
 543  * Helper for registering a callback.
 544  */
 545 static BOOL sym_register_cb(HANDLE hProcess,
 546                             PSYMBOL_REGISTERED_CALLBACK64 cb,
 547                             DWORD64 user, BOOL unicode)
 548 {
 549     struct process* pcs = process_find_by_handle(hProcess);
 550
 551     if (!pcs) return FALSE;
 552     pcs->reg_cb = cb;
 553     pcs->reg_is_unicode = unicode;
 554     pcs->reg_user = user;
 555
 556     return TRUE;
 557 }
 558
 559 /***********************************************************************
 560  *              SymRegisterCallback (DBGHELP.@)
 561  */
 562 BOOL WINAPI SymRegisterCallback(HANDLE hProcess,
 563                                 PSYMBOL_REGISTERED_CALLBACK CallbackFunction,
 564                                 PVOID UserContext)
 565 {
 566     DWORD64 tmp = ((ULONGLONG)(DWORD)CallbackFunction << 32) | (DWORD)UserContext;
 567     TRACE("(%p, %p, %p)\n",
 568           hProcess, CallbackFunction, UserContext);
 569     return sym_register_cb(hProcess, reg_cb64to32, tmp, FALSE);
 570 }
 571
 572 /***********************************************************************
 573  *              SymRegisterCallback64 (DBGHELP.@)
 574  */
 575 BOOL WINAPI SymRegisterCallback64(HANDLE hProcess,
 576                                   PSYMBOL_REGISTERED_CALLBACK64 CallbackFunction,
 577                                   ULONG64 UserContext)
 578 {
 579     TRACE("(%p, %p, %s)\n",
 580           hProcess, CallbackFunction, wine_dbgstr_longlong(UserContext));
 581     return sym_register_cb(hProcess, CallbackFunction, UserContext, FALSE);
 582 }
 583
 584 /***********************************************************************
 585  *              SymRegisterCallbackW64 (DBGHELP.@)
 586  */
 587 BOOL WINAPI SymRegisterCallbackW64(HANDLE hProcess,
 588                                    PSYMBOL_REGISTERED_CALLBACK64 CallbackFunction,
 589                                    ULONG64 UserContext)
 590 {
 591     TRACE("(%p, %p, %s)\n",
 592           hProcess, CallbackFunction, wine_dbgstr_longlong(UserContext));
 593     return sym_register_cb(hProcess, CallbackFunction, UserContext, TRUE);
 594 }
 595
 596 /* This is imagehlp version not dbghelp !! */
 597 static API_VERSION api_version = { 4, 0, 2, 0 };
 598
 599 /***********************************************************************
 600  *           ImagehlpApiVersion (DBGHELP.@)
 601  */
 602 LPAPI_VERSION WINAPI ImagehlpApiVersion(VOID)
 603 {
 604     return &api_version;
 605 }
 606
 607 /***********************************************************************
 608  *           ImagehlpApiVersionEx (DBGHELP.@)
 609  */
 610 LPAPI_VERSION WINAPI ImagehlpApiVersionEx(LPAPI_VERSION AppVersion)
 611 {
 612     if (!AppVersion) return NULL;
 613
 614     AppVersion->MajorVersion = api_version.MajorVersion;
 615     AppVersion->MinorVersion = api_version.MinorVersion;
 616     AppVersion->Revision = api_version.Revision;
 617     AppVersion->Reserved = api_version.Reserved;
 618
 619     return AppVersion;
 620 }
 621
 622 /******************************************************************
 623  *              ExtensionApiVersion (DBGHELP.@)
 624  */
 625 LPEXT_API_VERSION WINAPI ExtensionApiVersion(void)
 626 {
 627     static EXT_API_VERSION      eav = {5, 5, 5, 0};
 628     return &eav;
 629 }
 630
 631 /******************************************************************
 632  *              WinDbgExtensionDllInit (DBGHELP.@)
 633  */
 634 void WINAPI WinDbgExtensionDllInit(PWINDBG_EXTENSION_APIS lpExtensionApis,
 635                                    unsigned short major, unsigned short minor)
 636 {
 637 }