dll/win32/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_rva
 152  *
 153  * Get the RVA of an PE section
 154  */
 155 DWORD_PTR pe_get_map_rva(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.VirtualAddress;
 160 }
 161
 162 /******************************************************************
 163  *              pe_get_map_size
 164  *
 165  * Get the size of an PE section
 166  */
 167 unsigned pe_get_map_size(const struct image_section_map* ism)
 168 {
 169     if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 170         return 0;
 171     return ism->fmap->u.pe.sect[ism->sidx].shdr.SizeOfRawData;
 172 }
 173
 174 /******************************************************************
 175  *              pe_map_file
 176  *
 177  * Maps an PE file into memory (and checks it's a real PE file)
 178  */
 179 static BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
 180 {
 181     void*       mapping;
 182
 183     fmap->modtype = mt;
 184     fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
 185     if (fmap->u.pe.hMap == 0) return FALSE;
 186     fmap->u.pe.full_count = 0;
 187     fmap->u.pe.full_map = NULL;
 188     if (!(mapping = pe_map_full(fmap, NULL))) goto error;
 189
 190     switch (mt)
 191     {
 192     case DMT_PE:
 193         {
 194             IMAGE_NT_HEADERS*       nthdr;
 195             IMAGE_SECTION_HEADER*   section;
 196             unsigned                i;
 197
 198             if (!(nthdr = RtlImageNtHeader(mapping))) goto error;
 199             memcpy(&fmap->u.pe.ntheader, nthdr, sizeof(fmap->u.pe.ntheader));
 200             section = (IMAGE_SECTION_HEADER*)
 201                 ((char*)&nthdr->OptionalHeader + nthdr->FileHeader.SizeOfOptionalHeader);
 202             fmap->u.pe.sect = HeapAlloc(GetProcessHeap(), 0,
 203                                         nthdr->FileHeader.NumberOfSections * sizeof(fmap->u.pe.sect[0]));
 204             if (!fmap->u.pe.sect) goto error;
 205             for (i = 0; i < nthdr->FileHeader.NumberOfSections; i++)
 206             {
 207                 memcpy(&fmap->u.pe.sect[i].shdr, section + i, sizeof(IMAGE_SECTION_HEADER));
 208                 fmap->u.pe.sect[i].mapped = IMAGE_NO_MAP;
 209             }
 210             if (nthdr->FileHeader.PointerToSymbolTable && nthdr->FileHeader.NumberOfSymbols)
 211             {
 212                 /* FIXME ugly: should rather map the relevant content instead of copying it */
 213                 const char* src = (const char*)mapping +
 214                     nthdr->FileHeader.PointerToSymbolTable +
 215                     nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
 216                 char* dst;
 217                 DWORD sz = *(DWORD*)src;
 218
 219                 if ((dst = HeapAlloc(GetProcessHeap(), 0, sz)))
 220                     memcpy(dst, src, sz);
 221                 fmap->u.pe.strtable = dst;
 222             }
 223             else fmap->u.pe.strtable = NULL;
 224         }
 225         break;
 226     default: assert(0); goto error;
 227     }
 228     pe_unmap_full(fmap);
 229
 230     return TRUE;
 231 error:
 232     pe_unmap_full(fmap);
 233     CloseHandle(fmap->u.pe.hMap);
 234     return FALSE;
 235 }
 236
 237 /******************************************************************
 238  *              pe_unmap_file
 239  *
 240  * Unmaps an PE file from memory (previously mapped with pe_map_file)
 241  */
 242 static void pe_unmap_file(struct image_file_map* fmap)
 243 {
 244     if (fmap->u.pe.hMap != 0)
 245     {
 246         struct image_section_map  ism;
 247         ism.fmap = fmap;
 248         for (ism.sidx = 0; ism.sidx < fmap->u.pe.ntheader.FileHeader.NumberOfSections; ism.sidx++)
 249         {
 250             pe_unmap_section(&ism);
 251         }
 252         while (fmap->u.pe.full_count) pe_unmap_full(fmap);
 253         HeapFree(GetProcessHeap(), 0, fmap->u.pe.sect);
 254         HeapFree(GetProcessHeap(), 0, (void*)fmap->u.pe.strtable); /* FIXME ugly (see pe_map_file) */
 255         CloseHandle(fmap->u.pe.hMap);
 256         fmap->u.pe.hMap = NULL;
 257     }
 258 }
 259
 260 static void pe_module_remove(struct process* pcs, struct module_format* modfmt)
 261 {
 262     pe_unmap_file(&modfmt->u.pe_info->fmap);
 263     HeapFree(GetProcessHeap(), 0, modfmt);
 264 }
 265
 266 /******************************************************************
 267  *              pe_locate_with_coff_symbol_table
 268  *
 269  * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
 270  * of global symbols.
 271  * Mingw32 requires this for stabs debug information as address for global variables isn't filled in
 272  * (this is similar to what is done in elf_module.c when using the .symtab ELF section)
 273  */
 274 static BOOL pe_locate_with_coff_symbol_table(struct module* module)
 275 {
 276     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 277     const IMAGE_SYMBOL* isym;
 278     int                 i, numsym, naux;
 279     char                tmp[9];
 280     const char*         name;
 281     struct hash_table_iter      hti;
 282     void*               ptr;
 283     struct symt_data*   sym;
 284     const char*         mapping;
 285
 286     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 287     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 288         return TRUE;
 289     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 290     isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 291
 292     for (i = 0; i < numsym; i+= naux, isym += naux)
 293     {
 294         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 295             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 296         {
 297             if (isym->N.Name.Short)
 298             {
 299                 name = memcpy(tmp, isym->N.ShortName, 8);
 300                 tmp[8] = '\0';
 301             }
 302             else name = fmap->u.pe.strtable + isym->N.Name.Long;
 303             if (name[0] == '_') name++;
 304             hash_table_iter_init(&module->ht_symbols, &hti, name);
 305             while ((ptr = hash_table_iter_up(&hti)))
 306             {
 307                 sym = GET_ENTRY(ptr, struct symt_data, hash_elt);
 308                 if (sym->symt.tag == SymTagData &&
 309                     (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
 310                     !strcmp(sym->hash_elt.name, name))
 311                 {
 312                     TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
 313                           isym->SectionNumber, name, sym->u.var.offset,
 314                           wine_dbgstr_longlong(module->module.BaseOfImage +
 315                                                fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
 316                                                isym->Value));
 317                     sym->u.var.offset = module->module.BaseOfImage +
 318                         fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
 319                     break;
 320                 }
 321             }
 322         }
 323         naux = isym->NumberOfAuxSymbols + 1;
 324     }
 325     pe_unmap_full(fmap);
 326     return TRUE;
 327 }
 328
 329 /******************************************************************
 330  *              pe_load_coff_symbol_table
 331  *
 332  * Load public symbols out of the COFF symbol table (if any).
 333  */
 334 static BOOL pe_load_coff_symbol_table(struct module* module)
 335 {
 336     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 337     const IMAGE_SYMBOL* isym;
 338     int                 i, numsym, naux;
 339     const char*         strtable;
 340     char                tmp[9];
 341     const char*         name;
 342     const char*         lastfilename = NULL;
 343     struct symt_compiland*   compiland = NULL;
 344     const IMAGE_SECTION_HEADER* sect;
 345     const char*         mapping;
 346
 347     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 348     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 349         return TRUE;
 350     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 351     isym = (const IMAGE_SYMBOL*)((char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 352     /* FIXME: no way to get strtable size */
 353     strtable = (const char*)&isym[numsym];
 354     sect = IMAGE_FIRST_SECTION(&fmap->u.pe.ntheader);
 355
 356     for (i = 0; i < numsym; i+= naux, isym += naux)
 357     {
 358         if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
 359         {
 360             lastfilename = (const char*)(isym + 1);
 361             compiland = NULL;
 362         }
 363         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 364             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 365         {
 366             if (isym->N.Name.Short)
 367             {
 368                 name = memcpy(tmp, isym->N.ShortName, 8);
 369                 tmp[8] = '\0';
 370             }
 371             else name = strtable + isym->N.Name.Long;
 372             if (name[0] == '_') name++;
 373
 374             if (!compiland && lastfilename)
 375                 compiland = symt_new_compiland(module, 0,
 376                                                source_new(module, NULL, lastfilename));
 377
 378             if (!(dbghelp_options & SYMOPT_NO_PUBLICS))
 379                 symt_new_public(module, compiland, name,
 380                                 module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress +
 381                                      isym->Value,
 382                                 1);
 383         }
 384         naux = isym->NumberOfAuxSymbols + 1;
 385     }
 386     module->module.SymType = SymCoff;
 387     module->module.LineNumbers = FALSE;
 388     module->module.GlobalSymbols = FALSE;
 389     module->module.TypeInfo = FALSE;
 390     module->module.SourceIndexed = FALSE;
 391     module->module.Publics = TRUE;
 392     pe_unmap_full(fmap);
 393
 394     return TRUE;
 395 }
 396
 397 static inline void* pe_get_sect(IMAGE_NT_HEADERS* nth, void* mapping,
 398                                 IMAGE_SECTION_HEADER* sect)
 399 {
 400     return (sect) ? RtlImageRvaToVa(nth, mapping, sect->VirtualAddress, NULL) : NULL;
 401 }
 402
 403 static inline DWORD pe_get_sect_size(IMAGE_SECTION_HEADER* sect)
 404 {
 405     return (sect) ? sect->SizeOfRawData : 0;
 406 }
 407
 408 /******************************************************************
 409  *              pe_load_stabs
 410  *
 411  * look for stabs information in PE header (it's how the mingw compiler provides
 412  * its debugging information)
 413  */
 414 static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
 415 {
 416     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 417     struct image_section_map    sect_stabs, sect_stabstr;
 418     BOOL                        ret = FALSE;
 419
 420     if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
 421     {
 422         const char* stab;
 423         const char* stabstr;
 424
 425         stab = image_map_section(&sect_stabs);
 426         stabstr = image_map_section(&sect_stabstr);
 427         if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
 428         {
 429             ret = stabs_parse(module,
 430                               module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 431                               stab, image_get_map_size(&sect_stabs),
 432                               stabstr, image_get_map_size(&sect_stabstr),
 433                               NULL, NULL);
 434         }
 435         image_unmap_section(&sect_stabs);
 436         image_unmap_section(&sect_stabstr);
 437         if (ret) pe_locate_with_coff_symbol_table(module);
 438     }
 439     TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
 440
 441     return ret;
 442 }
 443
 444 /******************************************************************
 445  *              pe_load_dwarf
 446  *
 447  * look for dwarf information in PE header (it's also a way for the mingw compiler
 448  * to provide its debugging information)
 449  */
 450 static BOOL pe_load_dwarf(struct module* module)
 451 {
 452     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 453     BOOL                        ret = FALSE;
 454
 455     ret = dwarf2_parse(module,
 456                        module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 457                        NULL, /* FIXME: some thunks to deal with ? */
 458                        fmap);
 459     TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
 460
 461     return ret;
 462 }
 463
 464 /******************************************************************
 465  *              pe_load_dbg_file
 466  *
 467  * loads a .dbg file
 468  */
 469 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
 470                              const char* dbg_name, DWORD timestamp)
 471 {
 472     char                                tmp[MAX_PATH];
 473     HANDLE                              hFile = INVALID_HANDLE_VALUE, hMap = 0;
 474     const BYTE*                         dbg_mapping = NULL;
 475     BOOL                                ret = FALSE;
 476
 477     TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
 478
 479     if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
 480         (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
 481                              OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
 482         ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
 483         ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
 484     {
 485         const IMAGE_SEPARATE_DEBUG_HEADER*      hdr;
 486         const IMAGE_SECTION_HEADER*             sectp;
 487         const IMAGE_DEBUG_DIRECTORY*            dbg;
 488
 489         hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
 490         /* section headers come immediately after debug header */
 491         sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
 492         /* and after that and the exported names comes the debug directory */
 493         dbg = (const IMAGE_DEBUG_DIRECTORY*)
 494             (dbg_mapping + sizeof(*hdr) +
 495              hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
 496              hdr->ExportedNamesSize);
 497
 498         ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
 499                                       hdr->NumberOfSections, dbg,
 500                                       hdr->DebugDirectorySize / sizeof(*dbg));
 501     }
 502     else
 503         ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
 504
 505     if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
 506     if (hMap) CloseHandle(hMap);
 507     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 508     return ret;
 509 }
 510
 511 /******************************************************************
 512  *              pe_load_msc_debug_info
 513  *
 514  * Process MSC debug information in PE file.
 515  */
 516 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module)
 517 {
 518     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 519     BOOL                        ret = FALSE;
 520     const IMAGE_DATA_DIRECTORY* dir;
 521     const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
 522     int                         nDbg;
 523     void*                       mapping;
 524     IMAGE_NT_HEADERS*           nth;
 525
 526     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 527     /* Read in debug directory */
 528     dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
 529     nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
 530     if (!nDbg) goto done;
 531
 532     dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
 533
 534     /* Parse debug directory */
 535     if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
 536     {
 537         /* Debug info is stripped to .DBG file */
 538         const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
 539             ((const char*)mapping + dbg->PointerToRawData);
 540
 541         if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
 542             misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
 543         {
 544             WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
 545                      debugstr_w(module->module.ModuleName));
 546         }
 547         else
 548         {
 549             ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
 550         }
 551     }
 552     else
 553     {
 554         const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 555         /* Debug info is embedded into PE module */
 556         ret = pe_load_debug_directory(pcs, module, mapping, sectp,
 557                                       nth->FileHeader.NumberOfSections, dbg, nDbg);
 558     }
 559 done:
 560     pe_unmap_full(fmap);
 561     return ret;
 562 }
 563
 564 /***********************************************************************
 565  *                      pe_load_export_debug_info
 566  */
 567 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module)
 568 {
 569     struct image_file_map*              fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 570     unsigned int                        i;
 571     const IMAGE_EXPORT_DIRECTORY*       exports;
 572     DWORD                               base = module->module.BaseOfImage;
 573     DWORD                               size;
 574     IMAGE_NT_HEADERS*                   nth;
 575     void*                               mapping;
 576
 577     if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
 578
 579     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 580 #if 0
 581     /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
 582     /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
 583     symt_new_public(module, NULL, module->module.ModuleName, base, 1);
 584 #endif
 585
 586     /* Add entry point */
 587     symt_new_public(module, NULL, "EntryPoint",
 588                     base + nth->OptionalHeader.AddressOfEntryPoint, 1);
 589 #if 0
 590     /* FIXME: we'd better store addresses linked to sections rather than
 591        absolute values */
 592     IMAGE_SECTION_HEADER*       section;
 593     /* Add start of sections */
 594     section = (IMAGE_SECTION_HEADER*)
 595         ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 596     for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
 597     {
 598         symt_new_public(module, NULL, section->Name,
 599                         RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
 600     }
 601 #endif
 602
 603     /* Add exported functions */
 604     if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
 605                                                 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
 606     {
 607         const WORD*             ordinals = NULL;
 608         const DWORD_PTR*        functions = NULL;
 609         const DWORD*            names = NULL;
 610         unsigned int            j;
 611         char                    buffer[16];
 612
 613         functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
 614         ordinals  = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
 615         names     = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
 616
 617         if (functions && ordinals && names)
 618         {
 619             for (i = 0; i < exports->NumberOfNames; i++)
 620             {
 621                 if (!names[i]) continue;
 622                 symt_new_public(module, NULL,
 623                                 RtlImageRvaToVa(nth, mapping, names[i], NULL),
 624                                 base + functions[ordinals[i]], 1);
 625             }
 626
 627             for (i = 0; i < exports->NumberOfFunctions; i++)
 628             {
 629                 if (!functions[i]) continue;
 630                 /* Check if we already added it with a name */
 631                 for (j = 0; j < exports->NumberOfNames; j++)
 632                     if ((ordinals[j] == i) && names[j]) break;
 633                 if (j < exports->NumberOfNames) continue;
 634                 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
 635                 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1);
 636             }
 637         }
 638     }
 639     /* no real debug info, only entry points */
 640     if (module->module.SymType == SymDeferred)
 641         module->module.SymType = SymExport;
 642     pe_unmap_full(fmap);
 643
 644     return TRUE;
 645 }
 646
 647 /******************************************************************
 648  *              pe_load_debug_info
 649  *
 650  */
 651 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
 652 {
 653     BOOL                ret = FALSE;
 654
 655     if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
 656     {
 657         ret = pe_load_stabs(pcs, module);
 658         ret = pe_load_dwarf(module) || ret;
 659         ret = pe_load_msc_debug_info(pcs, module) || ret;
 660         ret = ret || pe_load_coff_symbol_table(module); /* FIXME */
 661         /* if we still have no debug info (we could only get SymExport at this
 662          * point), then do the SymExport except if we have an ELF container,
 663          * in which case we'll rely on the export's on the ELF side
 664          */
 665     }
 666     /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */
 667     if (pe_load_export_debug_info(pcs, module) && !ret)
 668         ret = TRUE;
 669
 670     return ret;
 671 }
 672
 673 /******************************************************************
 674  *              pe_load_native_module
 675  *
 676  */
 677 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
 678                                      HANDLE hFile, DWORD base, DWORD size)
 679 {
 680     struct module*              module = NULL;
 681     BOOL                        opened = FALSE;
 682     struct module_format*       modfmt;
 683     WCHAR                       loaded_name[MAX_PATH];
 684
 685     loaded_name[0] = '\0';
 686     if (!hFile)
 687     {
 688         assert(name);
 689
 690         if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
 691             return NULL;
 692         opened = TRUE;
 693     }
 694     else if (name) strcpyW(loaded_name, name);
 695     else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 696         FIXME("Trouble ahead (no module name passed in deferred mode)\n");
 697     if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info))))
 698         return NULL;
 699     modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1);
 700     if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE))
 701     {
 702         if (!base) base = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
 703         if (!size) size = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
 704
 705         module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
 706                             modfmt->u.pe_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
 707                             modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum);
 708         if (module)
 709         {
 710             modfmt->module = module;
 711             modfmt->remove = pe_module_remove;
 712             modfmt->loc_compute = NULL;
 713
 714             module->format_info[DFI_PE] = modfmt;
 715             if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 716                 module->module.SymType = SymDeferred;
 717             else
 718                 pe_load_debug_info(pcs, module);
 719         }
 720         else
 721         {
 722             ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
 723             pe_unmap_file(&modfmt->u.pe_info->fmap);
 724         }
 725     }
 726     if (!module) HeapFree(GetProcessHeap(), 0, modfmt);
 727
 728     if (opened) CloseHandle(hFile);
 729
 730     return module;
 731 }
 732
 733 /******************************************************************
 734  *              pe_load_nt_header
 735  *
 736  */
 737 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
 738 {
 739     IMAGE_DOS_HEADER    dos;
 740
 741     return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
 742         dos.e_magic == IMAGE_DOS_SIGNATURE &&
 743         ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
 744                           nth, sizeof(*nth), NULL) &&
 745         nth->Signature == IMAGE_NT_SIGNATURE;
 746 }
 747
 748 /******************************************************************
 749  *              pe_load_builtin_module
 750  *
 751  */
 752 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
 753                                       DWORD64 base, DWORD64 size)
 754 {
 755     struct module*      module = NULL;
 756
 757     if (base && pcs->dbg_hdr_addr)
 758     {
 759         IMAGE_NT_HEADERS    nth;
 760
 761         if (pe_load_nt_header(pcs->handle, base, &nth))
 762         {
 763             if (!size) size = nth.OptionalHeader.SizeOfImage;
 764             module = module_new(pcs, name, DMT_PE, FALSE, base, size,
 765                                 nth.FileHeader.TimeDateStamp,
 766                                 nth.OptionalHeader.CheckSum);
 767         }
 768     }
 769     return module;
 770 }
 771
 772 /***********************************************************************
 773  *           ImageDirectoryEntryToDataEx (DBGHELP.@)
 774  *
 775  * Search for specified directory in PE image
 776  *
 777  * PARAMS
 778  *
 779  *   base    [in]  Image base address
 780  *   image   [in]  TRUE - image has been loaded by loader, FALSE - raw file image
 781  *   dir     [in]  Target directory index
 782  *   size    [out] Receives directory size
 783  *   section [out] Receives pointer to section header of section containing directory data
 784  *
 785  * RETURNS
 786  *   Success: pointer to directory data
 787  *   Failure: NULL
 788  *
 789  */
 790 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
 791 {
 792     const IMAGE_NT_HEADERS *nt;
 793     DWORD addr;
 794
 795     *size = 0;
 796     if (section) *section = NULL;
 797
 798     if (!(nt = RtlImageNtHeader( base ))) return NULL;
 799     if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
 800     if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
 801
 802     *size = nt->OptionalHeader.DataDirectory[dir].Size;
 803     if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
 804
 805     return RtlImageRvaToVa( nt, base, addr, section );
 806 }
 807
 808 /***********************************************************************
 809  *         ImageDirectoryEntryToData   (DBGHELP.@)
 810  *
 811  * NOTES
 812  *   See ImageDirectoryEntryToDataEx
 813  */
 814 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
 815 {
 816     return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
 817 }