dlls/dbghelp/pe_module.c

   1 /*
   2  * File pe_module.c - handle PE module information
   3  *
   4  * Copyright (C) 1996,      Eric Youngdale.
   5  * Copyright (C) 1999-2000, Ulrich Weigand.
   6  * Copyright (C) 2004-2007, Eric Pouech.
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  21  *
  22  */
  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 <assert.h>
  31
  32 #include "dbghelp_private.h"
  33 #include "image_private.h"
  34 #include "winternl.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  38
  39 struct pe_module_info
  40 {
  41     struct image_file_map       fmap;
  42 };
  43
  44 static void* pe_map_full(struct image_file_map* fmap, IMAGE_NT_HEADERS** nth)
  45 {
  46     if (!fmap->u.pe.full_map)
  47     {
  48         fmap->u.pe.full_map = MapViewOfFile(fmap->u.pe.hMap, FILE_MAP_READ, 0, 0, 0);
  49     }
  50     if (fmap->u.pe.full_map)
  51     {
  52         if (nth) *nth = RtlImageNtHeader(fmap->u.pe.full_map);
  53         fmap->u.pe.full_count++;
  54         return fmap->u.pe.full_map;
  55     }
  56     return IMAGE_NO_MAP;
  57 }
  58
  59 static void pe_unmap_full(struct image_file_map* fmap)
  60 {
  61     if (fmap->u.pe.full_count && !--fmap->u.pe.full_count)
  62     {
  63         UnmapViewOfFile(fmap->u.pe.full_map);
  64         fmap->u.pe.full_map = NULL;
  65     }
  66 }
  67
  68 /******************************************************************
  69  *              pe_map_section
  70  *
  71  * Maps a single section into memory from an PE file
  72  */
  73 const char* pe_map_section(struct image_section_map* ism)
  74 {
  75     void*       mapping;
  76     struct pe_file_map* fmap = &ism->fmap->u.pe;
  77
  78     if (ism->sidx >= 0 && ism->sidx < fmap->ntheader.FileHeader.NumberOfSections &&
  79         fmap->sect[ism->sidx].mapped == IMAGE_NO_MAP)
  80     {
  81         IMAGE_NT_HEADERS*       nth;
  82         /* FIXME: that's rather drastic, but that will do for now
  83          * that's ok if the full file map exists, but we could be less agressive otherwise and
  84          * only map the relevant section
  85          */
  86         if ((mapping = pe_map_full(ism->fmap, &nth)))
  87         {
  88             fmap->sect[ism->sidx].mapped = RtlImageRvaToVa(nth, mapping,
  89                                                            fmap->sect[ism->sidx].shdr.VirtualAddress,
  90                                                            NULL);
  91             return fmap->sect[ism->sidx].mapped;
  92         }
  93     }
  94     return IMAGE_NO_MAP;
  95 }
  96
  97 /******************************************************************
  98  *              pe_find_section
  99  *
 100  * Finds a section by name (and type) into memory from an PE file
 101  * or its alternate if any
 102  */
 103 BOOL pe_find_section(struct image_file_map* fmap, const char* name,
 104                      struct image_section_map* ism)
 105 {
 106     const char*                 sectname;
 107     unsigned                    i;
 108     char                        tmp[IMAGE_SIZEOF_SHORT_NAME + 1];
 109
 110     for (i = 0; i < fmap->u.pe.ntheader.FileHeader.NumberOfSections; i++)
 111     {
 112         sectname = (const char*)fmap->u.pe.sect[i].shdr.Name;
 113         /* long section names start with a '/' (at least on MinGW32) */
 114         if (sectname[0] == '/' && fmap->u.pe.strtable)
 115             sectname = fmap->u.pe.strtable + atoi(sectname + 1);
 116         else
 117         {
 118             /* the section name may not be null terminated */
 119             sectname = memcpy(tmp, sectname, IMAGE_SIZEOF_SHORT_NAME);
 120             tmp[IMAGE_SIZEOF_SHORT_NAME] = '\0';
 121         }
 122         if (!strcasecmp(sectname, name))
 123         {
 124             ism->fmap = fmap;
 125             ism->sidx = i;
 126             return TRUE;
 127         }
 128     }
 129     ism->fmap = NULL;
 130     ism->sidx = -1;
 131
 132     return FALSE;
 133 }
 134
 135 /******************************************************************
 136  *              pe_unmap_section
 137  *
 138  * Unmaps a single section from memory
 139  */
 140 void pe_unmap_section(struct image_section_map* ism)
 141 {
 142     if (ism->sidx >= 0 && ism->sidx < ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections &&
 143         ism->fmap->u.pe.sect[ism->sidx].mapped != IMAGE_NO_MAP)
 144     {
 145         pe_unmap_full(ism->fmap);
 146         ism->fmap->u.pe.sect[ism->sidx].mapped = IMAGE_NO_MAP;
 147     }
 148 }
 149
 150 /******************************************************************
 151  *              pe_get_map_size
 152  *
 153  * Get the size of an PE section
 154  */
 155 unsigned pe_get_map_size(const struct image_section_map* ism)
 156 {
 157     if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 158         return 0;
 159     return ism->fmap->u.pe.sect[ism->sidx].shdr.SizeOfRawData;
 160 }
 161
 162 /******************************************************************
 163  *              pe_map_file
 164  *
 165  * Maps an PE file into memory (and checks it's a real PE file)
 166  */
 167 static BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
 168 {
 169     void*       mapping;
 170
 171     fmap->modtype = mt;
 172     fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
 173     if (fmap->u.pe.hMap == 0) return FALSE;
 174     fmap->u.pe.full_count = 0;
 175     fmap->u.pe.full_map = NULL;
 176     if (!(mapping = pe_map_full(fmap, NULL))) goto error;
 177
 178     switch (mt)
 179     {
 180     case DMT_PE:
 181         {
 182             IMAGE_NT_HEADERS*       nthdr;
 183             IMAGE_SECTION_HEADER*   section;
 184             unsigned                i;
 185
 186             if (!(nthdr = RtlImageNtHeader(mapping))) goto error;
 187             memcpy(&fmap->u.pe.ntheader, nthdr, sizeof(fmap->u.pe.ntheader));
 188             section = (IMAGE_SECTION_HEADER*)
 189                 ((char*)&nthdr->OptionalHeader + nthdr->FileHeader.SizeOfOptionalHeader);
 190             fmap->u.pe.sect = HeapAlloc(GetProcessHeap(), 0,
 191                                         nthdr->FileHeader.NumberOfSections * sizeof(fmap->u.pe.sect[0]));
 192             if (!fmap->u.pe.sect) goto error;
 193             for (i = 0; i < nthdr->FileHeader.NumberOfSections; i++)
 194             {
 195                 memcpy(&fmap->u.pe.sect[i].shdr, section + i, sizeof(IMAGE_SECTION_HEADER));
 196                 fmap->u.pe.sect[i].mapped = IMAGE_NO_MAP;
 197             }
 198             if (nthdr->FileHeader.PointerToSymbolTable && nthdr->FileHeader.NumberOfSymbols)
 199             {
 200                 /* FIXME ugly: should rather map the relevant content instead of copying it */
 201                 const char* src = (const char*)mapping +
 202                     nthdr->FileHeader.PointerToSymbolTable +
 203                     nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
 204                 char* dst;
 205                 DWORD sz = *(DWORD*)src;
 206
 207                 if ((dst = HeapAlloc(GetProcessHeap(), 0, sz)))
 208                     memcpy(dst, src, sz);
 209                 fmap->u.pe.strtable = dst;
 210             }
 211             else fmap->u.pe.strtable = NULL;
 212         }
 213         break;
 214     default: assert(0); goto error;
 215     }
 216     pe_unmap_full(fmap);
 217
 218     return TRUE;
 219 error:
 220     pe_unmap_full(fmap);
 221     CloseHandle(fmap->u.pe.hMap);
 222     return FALSE;
 223 }
 224
 225 /******************************************************************
 226  *              pe_unmap_file
 227  *
 228  * Unmaps an PE file from memory (previously mapped with pe_map_file)
 229  */
 230 static void pe_unmap_file(struct image_file_map* fmap)
 231 {
 232     if (fmap->u.pe.hMap != 0)
 233     {
 234         struct image_section_map  ism;
 235         ism.fmap = fmap;
 236         for (ism.sidx = 0; ism.sidx < fmap->u.pe.ntheader.FileHeader.NumberOfSections; ism.sidx++)
 237         {
 238             pe_unmap_section(&ism);
 239         }
 240         while (fmap->u.pe.full_count) pe_unmap_full(fmap);
 241         HeapFree(GetProcessHeap(), 0, fmap->u.pe.sect);
 242         HeapFree(GetProcessHeap(), 0, (void*)fmap->u.pe.strtable); /* FIXME ugly (see pe_map_file) */
 243         CloseHandle(fmap->u.pe.hMap);
 244         fmap->u.pe.hMap = NULL;
 245     }
 246 }
 247
 248 static void pe_module_remove(struct process* pcs, struct module* module)
 249 {
 250     pe_unmap_file(&module->pe_info->fmap);
 251     HeapFree(GetProcessHeap(), 0, module->pe_info);
 252 }
 253
 254 /******************************************************************
 255  *              pe_locate_with_coff_symbol_table
 256  *
 257  * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
 258  * of global symbols.
 259  * Mingw32 requires this for stabs debug information as address for global variables isn't filled in
 260  * (this is similar to what is done in elf_module.c when using the .symtab ELF section)
 261  */
 262 static BOOL pe_locate_with_coff_symbol_table(struct module* module)
 263 {
 264     struct image_file_map* fmap = &module->pe_info->fmap;
 265     const IMAGE_SYMBOL* isym;
 266     int                 i, numsym, naux;
 267     char                tmp[9];
 268     const char*         name;
 269     struct hash_table_iter      hti;
 270     void*               ptr;
 271     struct symt_data*   sym;
 272     const char*         mapping;
 273
 274     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 275     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 276         return TRUE;
 277     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 278     isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 279
 280     for (i = 0; i < numsym; i+= naux, isym += naux)
 281     {
 282         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 283             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 284         {
 285             if (isym->N.Name.Short)
 286             {
 287                 name = memcpy(tmp, isym->N.ShortName, 8);
 288                 tmp[8] = '\0';
 289             }
 290             else name = fmap->u.pe.strtable + isym->N.Name.Long;
 291             if (name[0] == '_') name++;
 292             hash_table_iter_init(&module->ht_symbols, &hti, name);
 293             while ((ptr = hash_table_iter_up(&hti)))
 294             {
 295                 sym = GET_ENTRY(ptr, struct symt_data, hash_elt);
 296                 if (sym->symt.tag == SymTagData &&
 297                     (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
 298                     !strcmp(sym->hash_elt.name, name))
 299                 {
 300                     TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
 301                           isym->SectionNumber, name, sym->u.var.offset,
 302                           wine_dbgstr_longlong(module->module.BaseOfImage +
 303                                                fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
 304                                                isym->Value));
 305                     sym->u.var.offset = module->module.BaseOfImage +
 306                         fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
 307                     break;
 308                 }
 309             }
 310         }
 311         naux = isym->NumberOfAuxSymbols + 1;
 312     }
 313     pe_unmap_full(fmap);
 314     return TRUE;
 315 }
 316
 317 /******************************************************************
 318  *              pe_load_coff_symbol_table
 319  *
 320  * Load public symbols out of the COFF symbol table (if any).
 321  */
 322 static BOOL pe_load_coff_symbol_table(struct module* module)
 323 {
 324     struct image_file_map* fmap = &module->pe_info->fmap;
 325     const IMAGE_SYMBOL* isym;
 326     int                 i, numsym, naux;
 327     const char*         strtable;
 328     char                tmp[9];
 329     const char*         name;
 330     const char*         lastfilename = NULL;
 331     struct symt_compiland*   compiland = NULL;
 332     const IMAGE_SECTION_HEADER* sect;
 333     const char*         mapping;
 334
 335     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 336     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 337         return TRUE;
 338     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 339     isym = (const IMAGE_SYMBOL*)((char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 340     /* FIXME: no way to get strtable size */
 341     strtable = (const char*)&isym[numsym];
 342     sect = IMAGE_FIRST_SECTION(&fmap->u.pe.ntheader);
 343
 344     for (i = 0; i < numsym; i+= naux, isym += naux)
 345     {
 346         if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
 347         {
 348             lastfilename = (const char*)(isym + 1);
 349             compiland = NULL;
 350         }
 351         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 352             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 353         {
 354             if (isym->N.Name.Short)
 355             {
 356                 name = memcpy(tmp, isym->N.ShortName, 8);
 357                 tmp[8] = '\0';
 358             }
 359             else name = strtable + isym->N.Name.Long;
 360             if (name[0] == '_') name++;
 361
 362             if (!compiland && lastfilename)
 363                 compiland = symt_new_compiland(module, 0,
 364                                                source_new(module, NULL, lastfilename));
 365             symt_new_public(module, compiland, name,
 366                             module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress + isym->Value,
 367                             1);
 368         }
 369         naux = isym->NumberOfAuxSymbols + 1;
 370     }
 371     module->module.SymType = SymCoff;
 372     module->module.LineNumbers = FALSE;
 373     module->module.GlobalSymbols = FALSE;
 374     module->module.TypeInfo = FALSE;
 375     module->module.SourceIndexed = FALSE;
 376     module->module.Publics = TRUE;
 377     pe_unmap_full(fmap);
 378
 379     return TRUE;
 380 }
 381
 382 static inline void* pe_get_sect(IMAGE_NT_HEADERS* nth, void* mapping,
 383                                 IMAGE_SECTION_HEADER* sect)
 384 {
 385     return (sect) ? RtlImageRvaToVa(nth, mapping, sect->VirtualAddress, NULL) : NULL;
 386 }
 387
 388 static inline DWORD pe_get_sect_size(IMAGE_SECTION_HEADER* sect)
 389 {
 390     return (sect) ? sect->SizeOfRawData : 0;
 391 }
 392
 393 /******************************************************************
 394  *              pe_load_stabs
 395  *
 396  * look for stabs information in PE header (it's how the mingw compiler provides
 397  * its debugging information)
 398  */
 399 static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
 400 {
 401     struct image_file_map*      fmap = &module->pe_info->fmap;
 402     struct image_section_map    sect_stabs, sect_stabstr;
 403     BOOL                        ret = FALSE;
 404
 405     if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
 406     {
 407         const char* stab;
 408         const char* stabstr;
 409
 410         stab = image_map_section(&sect_stabs);
 411         stabstr = image_map_section(&sect_stabstr);
 412         if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
 413         {
 414             ret = stabs_parse(module,
 415                               module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 416                               stab, image_get_map_size(&sect_stabs),
 417                               stabstr, image_get_map_size(&sect_stabstr),
 418                               NULL, NULL);
 419         }
 420         image_unmap_section(&sect_stabs);
 421         image_unmap_section(&sect_stabstr);
 422         if (ret) pe_locate_with_coff_symbol_table(module);
 423     }
 424     TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
 425
 426     return ret;
 427 }
 428
 429 /******************************************************************
 430  *              pe_load_dwarf
 431  *
 432  * look for dwarf information in PE header (it's also a way for the mingw compiler
 433  * to provide its debugging information)
 434  */
 435 static BOOL pe_load_dwarf(const struct process* pcs, struct module* module)
 436 {
 437     struct image_file_map*      fmap = &module->pe_info->fmap;
 438     struct image_section_map    sect_debuginfo, sect_debugstr, sect_debugabbrev, sect_debugline, sect_debugloc;
 439     BOOL                        ret = FALSE;
 440
 441     if (pe_find_section(fmap, ".debug_info", &sect_debuginfo))
 442     {
 443         const BYTE* dw2_debuginfo;
 444         const BYTE* dw2_debugabbrev;
 445         const BYTE* dw2_debugstr;
 446         const BYTE* dw2_debugline;
 447         const BYTE* dw2_debugloc;
 448
 449         pe_find_section(fmap, ".debug_str",    &sect_debugstr);
 450         pe_find_section(fmap, ".debug_abbrev", &sect_debugabbrev);
 451         pe_find_section(fmap, ".debug_line",   &sect_debugline);
 452         pe_find_section(fmap, ".debug_loc",    &sect_debugloc);
 453
 454         dw2_debuginfo   = (const BYTE*)image_map_section(&sect_debuginfo);
 455         dw2_debugabbrev = (const BYTE*)image_map_section(&sect_debugabbrev);
 456         dw2_debugstr    = (const BYTE*)image_map_section(&sect_debugstr);
 457         dw2_debugline   = (const BYTE*)image_map_section(&sect_debugline);
 458         dw2_debugloc    = (const BYTE*)image_map_section(&sect_debugloc);
 459
 460         if (dw2_debuginfo != IMAGE_NO_MAP && dw2_debugabbrev != IMAGE_NO_MAP && dw2_debugstr != IMAGE_NO_MAP)
 461         {
 462             ret = dwarf2_parse(module,
 463                                module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 464                                NULL, /* FIXME: some thunks to deal with ? */
 465                                dw2_debuginfo,   image_get_map_size(&sect_debuginfo),
 466                                dw2_debugabbrev, image_get_map_size(&sect_debugabbrev),
 467                                dw2_debugstr,    image_get_map_size(&sect_debugstr),
 468                                dw2_debugline,   image_get_map_size(&sect_debugline),
 469                                dw2_debugloc,    image_get_map_size(&sect_debugloc));
 470         }
 471         image_unmap_section(&sect_debuginfo);
 472         image_unmap_section(&sect_debugabbrev);
 473         image_unmap_section(&sect_debugstr);
 474         image_unmap_section(&sect_debugline);
 475         image_unmap_section(&sect_debugloc);
 476     }
 477     TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
 478
 479     return ret;
 480 }
 481
 482 /******************************************************************
 483  *              pe_load_dbg_file
 484  *
 485  * loads a .dbg file
 486  */
 487 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
 488                              const char* dbg_name, DWORD timestamp)
 489 {
 490     char                                tmp[MAX_PATH];
 491     HANDLE                              hFile = INVALID_HANDLE_VALUE, hMap = 0;
 492     const BYTE*                         dbg_mapping = NULL;
 493     BOOL                                ret = FALSE;
 494
 495     TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
 496
 497     if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
 498         (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
 499                              OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
 500         ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
 501         ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
 502     {
 503         const IMAGE_SEPARATE_DEBUG_HEADER*      hdr;
 504         const IMAGE_SECTION_HEADER*             sectp;
 505         const IMAGE_DEBUG_DIRECTORY*            dbg;
 506
 507         hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
 508         /* section headers come immediately after debug header */
 509         sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
 510         /* and after that and the exported names comes the debug directory */
 511         dbg = (const IMAGE_DEBUG_DIRECTORY*)
 512             (dbg_mapping + sizeof(*hdr) +
 513              hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
 514              hdr->ExportedNamesSize);
 515
 516         ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
 517                                       hdr->NumberOfSections, dbg,
 518                                       hdr->DebugDirectorySize / sizeof(*dbg));
 519     }
 520     else
 521         ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
 522
 523     if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
 524     if (hMap) CloseHandle(hMap);
 525     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 526     return ret;
 527 }
 528
 529 /******************************************************************
 530  *              pe_load_msc_debug_info
 531  *
 532  * Process MSC debug information in PE file.
 533  */
 534 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module)
 535 {
 536     struct image_file_map*      fmap = &module->pe_info->fmap;
 537     BOOL                        ret = FALSE;
 538     const IMAGE_DATA_DIRECTORY* dir;
 539     const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
 540     int                         nDbg;
 541     void*                       mapping;
 542     IMAGE_NT_HEADERS*           nth;
 543
 544     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 545     /* Read in debug directory */
 546     dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
 547     nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
 548     if (!nDbg) goto done;
 549
 550     dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
 551
 552     /* Parse debug directory */
 553     if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
 554     {
 555         /* Debug info is stripped to .DBG file */
 556         const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
 557             ((const char*)mapping + dbg->PointerToRawData);
 558
 559         if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
 560             misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
 561         {
 562             WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
 563                      debugstr_w(module->module.ModuleName));
 564         }
 565         else
 566         {
 567             ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
 568         }
 569     }
 570     else
 571     {
 572         const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 573         /* Debug info is embedded into PE module */
 574         ret = pe_load_debug_directory(pcs, module, mapping, sectp,
 575                                       nth->FileHeader.NumberOfSections, dbg, nDbg);
 576     }
 577 done:
 578     pe_unmap_full(fmap);
 579     return ret;
 580 }
 581
 582 /***********************************************************************
 583  *                      pe_load_export_debug_info
 584  */
 585 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module)
 586 {
 587     struct image_file_map*              fmap = &module->pe_info->fmap;
 588     unsigned int                        i;
 589     const IMAGE_EXPORT_DIRECTORY*       exports;
 590     DWORD                               base = module->module.BaseOfImage;
 591     DWORD                               size;
 592     IMAGE_NT_HEADERS*                   nth;
 593     void*                               mapping;
 594
 595     if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
 596
 597     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 598 #if 0
 599     /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
 600     /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
 601     symt_new_public(module, NULL, module->module.ModuleName, base, 1);
 602 #endif
 603
 604     /* Add entry point */
 605     symt_new_public(module, NULL, "EntryPoint",
 606                     base + nth->OptionalHeader.AddressOfEntryPoint, 1);
 607 #if 0
 608     /* FIXME: we'd better store addresses linked to sections rather than
 609        absolute values */
 610     IMAGE_SECTION_HEADER*       section;
 611     /* Add start of sections */
 612     section = (IMAGE_SECTION_HEADER*)
 613         ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 614     for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
 615     {
 616         symt_new_public(module, NULL, section->Name,
 617                         RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
 618     }
 619 #endif
 620
 621     /* Add exported functions */
 622     if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
 623                                                 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
 624     {
 625         const WORD*             ordinals = NULL;
 626         const DWORD_PTR*        functions = NULL;
 627         const DWORD*            names = NULL;
 628         unsigned int            j;
 629         char                    buffer[16];
 630
 631         functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
 632         ordinals  = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
 633         names     = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
 634
 635         if (functions && ordinals && names)
 636         {
 637             for (i = 0; i < exports->NumberOfNames; i++)
 638             {
 639                 if (!names[i]) continue;
 640                 symt_new_public(module, NULL,
 641                                 RtlImageRvaToVa(nth, mapping, names[i], NULL),
 642                                 base + functions[ordinals[i]], 1);
 643             }
 644
 645             for (i = 0; i < exports->NumberOfFunctions; i++)
 646             {
 647                 if (!functions[i]) continue;
 648                 /* Check if we already added it with a name */
 649                 for (j = 0; j < exports->NumberOfNames; j++)
 650                     if ((ordinals[j] == i) && names[j]) break;
 651                 if (j < exports->NumberOfNames) continue;
 652                 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
 653                 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1);
 654             }
 655         }
 656     }
 657     /* no real debug info, only entry points */
 658     if (module->module.SymType == SymDeferred)
 659         module->module.SymType = SymExport;
 660     pe_unmap_full(fmap);
 661
 662     return TRUE;
 663 }
 664
 665 /******************************************************************
 666  *              pe_load_debug_info
 667  *
 668  */
 669 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
 670 {
 671     BOOL                ret = FALSE;
 672
 673     if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
 674     {
 675         ret = pe_load_stabs(pcs, module) ||
 676             pe_load_dwarf(pcs, module) ||
 677             pe_load_msc_debug_info(pcs, module) ||
 678             pe_load_coff_symbol_table(module);
 679         /* if we still have no debug info (we could only get SymExport at this
 680          * point), then do the SymExport except if we have an ELF container,
 681          * in which case we'll rely on the export's on the ELF side
 682          */
 683     }
 684     /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */
 685     if (pe_load_export_debug_info(pcs, module) && !ret)
 686         ret = TRUE;
 687
 688     return ret;
 689 }
 690
 691 /******************************************************************
 692  *              pe_load_native_module
 693  *
 694  */
 695 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
 696                                      HANDLE hFile, DWORD base, DWORD size)
 697 {
 698     struct module*              module = NULL;
 699     BOOL                        opened = FALSE;
 700     struct pe_module_info*      module_info;
 701     WCHAR                       loaded_name[MAX_PATH];
 702
 703     loaded_name[0] = '\0';
 704     if (!hFile)
 705     {
 706         assert(name);
 707
 708         if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
 709             return NULL;
 710         opened = TRUE;
 711     }
 712     else if (name) strcpyW(loaded_name, name);
 713     else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 714         FIXME("Trouble ahead (no module name passed in deferred mode)\n");
 715     if (!(module_info = HeapAlloc(GetProcessHeap(), 0, sizeof(*module_info))))
 716         return NULL;
 717     if (pe_map_file(hFile, &module_info->fmap, DMT_PE))
 718     {
 719         if (!base) base = module_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
 720         if (!size) size = module_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
 721
 722         module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
 723                             module_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
 724                             module_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum);
 725         if (module)
 726         {
 727             module->pe_info = module_info;
 728             module->module_remove = pe_module_remove;
 729             if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 730                 module->module.SymType = SymDeferred;
 731             else
 732                 pe_load_debug_info(pcs, module);
 733         }
 734         else
 735         {
 736             ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
 737             pe_unmap_file(&module_info->fmap);
 738         }
 739     }
 740     if (!module) HeapFree(GetProcessHeap(), 0, module_info);
 741
 742     if (opened) CloseHandle(hFile);
 743
 744     return module;
 745 }
 746
 747 /******************************************************************
 748  *              pe_load_nt_header
 749  *
 750  */
 751 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
 752 {
 753     IMAGE_DOS_HEADER    dos;
 754
 755     return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
 756         dos.e_magic == IMAGE_DOS_SIGNATURE &&
 757         ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
 758                           nth, sizeof(*nth), NULL) &&
 759         nth->Signature == IMAGE_NT_SIGNATURE;
 760 }
 761
 762 /******************************************************************
 763  *              pe_load_builtin_module
 764  *
 765  */
 766 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
 767                                       DWORD64 base, DWORD64 size)
 768 {
 769     struct module*      module = NULL;
 770
 771     if (base && pcs->dbg_hdr_addr)
 772     {
 773         IMAGE_NT_HEADERS    nth;
 774
 775         if (pe_load_nt_header(pcs->handle, base, &nth))
 776         {
 777             if (!size) size = nth.OptionalHeader.SizeOfImage;
 778             module = module_new(pcs, name, DMT_PE, FALSE, base, size,
 779                                 nth.FileHeader.TimeDateStamp,
 780                                 nth.OptionalHeader.CheckSum);
 781         }
 782     }
 783     return module;
 784 }
 785
 786 /***********************************************************************
 787  *           ImageDirectoryEntryToDataEx (DBGHELP.@)
 788  *
 789  * Search for specified directory in PE image
 790  *
 791  * PARAMS
 792  *
 793  *   base    [in]  Image base address
 794  *   image   [in]  TRUE - image has been loaded by loader, FALSE - raw file image
 795  *   dir     [in]  Target directory index
 796  *   size    [out] Receives directory size
 797  *   section [out] Receives pointer to section header of section containing directory data
 798  *
 799  * RETURNS
 800  *   Success: pointer to directory data
 801  *   Failure: NULL
 802  *
 803  */
 804 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
 805 {
 806     const IMAGE_NT_HEADERS *nt;
 807     DWORD addr;
 808
 809     *size = 0;
 810     if (section) *section = NULL;
 811
 812     if (!(nt = RtlImageNtHeader( base ))) return NULL;
 813     if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
 814     if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
 815
 816     *size = nt->OptionalHeader.DataDirectory[dir].Size;
 817     if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
 818
 819     return RtlImageRvaToVa( nt, base, addr, section );
 820 }
 821
 822 /***********************************************************************
 823  *         ImageDirectoryEntryToData   (DBGHELP.@)
 824  *
 825  * NOTES
 826  *   See ImageDirectoryEntryToDataEx
 827  */
 828 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
 829 {
 830     return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
 831 }