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_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 /******************************************************************
 261  *              pe_map_directory
 262  *
 263  * Maps a directory content out of a PE file
 264  */
 265 const char* pe_map_directory(struct module* module, int dirno, DWORD* size)
 266 {
 267     IMAGE_NT_HEADERS*   nth;
 268     void*               mapping;
 269
 270     if (module->type != DMT_PE || !module->format_info[DFI_PE]) return NULL;
 271     if (dirno >= IMAGE_NUMBEROF_DIRECTORY_ENTRIES ||
 272         !(mapping = pe_map_full(&module->format_info[DFI_PE]->u.pe_info->fmap, &nth)))
 273         return NULL;
 274     if (size) *size = nth->OptionalHeader.DataDirectory[dirno].Size;
 275     return RtlImageRvaToVa(nth, mapping,
 276                            nth->OptionalHeader.DataDirectory[dirno].VirtualAddress, NULL);
 277 }
 278
 279 /******************************************************************
 280  *              pe_unmap_directory
 281  *
 282  * Unmaps a directory content
 283  */
 284 void pe_unmap_directory(struct image_file_map* fmap, int dirno)
 285 {
 286     pe_unmap_full(fmap);
 287 }
 288
 289 static void pe_module_remove(struct process* pcs, struct module_format* modfmt)
 290 {
 291     pe_unmap_file(&modfmt->u.pe_info->fmap);
 292     HeapFree(GetProcessHeap(), 0, modfmt);
 293 }
 294
 295 /******************************************************************
 296  *              pe_locate_with_coff_symbol_table
 297  *
 298  * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
 299  * of global symbols.
 300  * Mingw32 requires this for stabs debug information as address for global variables isn't filled in
 301  * (this is similar to what is done in elf_module.c when using the .symtab ELF section)
 302  */
 303 static BOOL pe_locate_with_coff_symbol_table(struct module* module)
 304 {
 305     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 306     const IMAGE_SYMBOL* isym;
 307     int                 i, numsym, naux;
 308     char                tmp[9];
 309     const char*         name;
 310     struct hash_table_iter      hti;
 311     void*               ptr;
 312     struct symt_data*   sym;
 313     const char*         mapping;
 314
 315     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 316     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 317         return TRUE;
 318     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 319     isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 320
 321     for (i = 0; i < numsym; i+= naux, isym += naux)
 322     {
 323         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 324             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 325         {
 326             if (isym->N.Name.Short)
 327             {
 328                 name = memcpy(tmp, isym->N.ShortName, 8);
 329                 tmp[8] = '\0';
 330             }
 331             else name = fmap->u.pe.strtable + isym->N.Name.Long;
 332             if (name[0] == '_') name++;
 333             hash_table_iter_init(&module->ht_symbols, &hti, name);
 334             while ((ptr = hash_table_iter_up(&hti)))
 335             {
 336                 sym = GET_ENTRY(ptr, struct symt_data, hash_elt);
 337                 if (sym->symt.tag == SymTagData &&
 338                     (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
 339                     !strcmp(sym->hash_elt.name, name))
 340                 {
 341                     TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
 342                           isym->SectionNumber, name, sym->u.var.offset,
 343                           wine_dbgstr_longlong(module->module.BaseOfImage +
 344                                                fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
 345                                                isym->Value));
 346                     sym->u.var.offset = module->module.BaseOfImage +
 347                         fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
 348                     break;
 349                 }
 350             }
 351         }
 352         naux = isym->NumberOfAuxSymbols + 1;
 353     }
 354     pe_unmap_full(fmap);
 355     return TRUE;
 356 }
 357
 358 /******************************************************************
 359  *              pe_load_coff_symbol_table
 360  *
 361  * Load public symbols out of the COFF symbol table (if any).
 362  */
 363 static BOOL pe_load_coff_symbol_table(struct module* module)
 364 {
 365     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 366     const IMAGE_SYMBOL* isym;
 367     int                 i, numsym, naux;
 368     const char*         strtable;
 369     char                tmp[9];
 370     const char*         name;
 371     const char*         lastfilename = NULL;
 372     struct symt_compiland*   compiland = NULL;
 373     const IMAGE_SECTION_HEADER* sect;
 374     const char*         mapping;
 375
 376     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 377     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 378         return TRUE;
 379     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 380     isym = (const IMAGE_SYMBOL*)((const char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 381     /* FIXME: no way to get strtable size */
 382     strtable = (const char*)&isym[numsym];
 383     sect = IMAGE_FIRST_SECTION(&fmap->u.pe.ntheader);
 384
 385     for (i = 0; i < numsym; i+= naux, isym += naux)
 386     {
 387         if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
 388         {
 389             lastfilename = (const char*)(isym + 1);
 390             compiland = NULL;
 391         }
 392         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 393             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 394         {
 395             if (isym->N.Name.Short)
 396             {
 397                 name = memcpy(tmp, isym->N.ShortName, 8);
 398                 tmp[8] = '\0';
 399             }
 400             else name = strtable + isym->N.Name.Long;
 401             if (name[0] == '_') name++;
 402
 403             if (!compiland && lastfilename)
 404                 compiland = symt_new_compiland(module, 0,
 405                                                source_new(module, NULL, lastfilename));
 406
 407             if (!(dbghelp_options & SYMOPT_NO_PUBLICS))
 408                 symt_new_public(module, compiland, name,
 409                                 module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress +
 410                                      isym->Value,
 411                                 1);
 412         }
 413         naux = isym->NumberOfAuxSymbols + 1;
 414     }
 415     module->module.SymType = SymCoff;
 416     module->module.LineNumbers = FALSE;
 417     module->module.GlobalSymbols = FALSE;
 418     module->module.TypeInfo = FALSE;
 419     module->module.SourceIndexed = FALSE;
 420     module->module.Publics = TRUE;
 421     pe_unmap_full(fmap);
 422
 423     return TRUE;
 424 }
 425
 426 static inline void* pe_get_sect(IMAGE_NT_HEADERS* nth, void* mapping,
 427                                 IMAGE_SECTION_HEADER* sect)
 428 {
 429     return (sect) ? RtlImageRvaToVa(nth, mapping, sect->VirtualAddress, NULL) : NULL;
 430 }
 431
 432 static inline DWORD pe_get_sect_size(IMAGE_SECTION_HEADER* sect)
 433 {
 434     return (sect) ? sect->SizeOfRawData : 0;
 435 }
 436
 437 /******************************************************************
 438  *              pe_load_stabs
 439  *
 440  * look for stabs information in PE header (it's how the mingw compiler provides
 441  * its debugging information)
 442  */
 443 static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
 444 {
 445     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 446     struct image_section_map    sect_stabs, sect_stabstr;
 447     BOOL                        ret = FALSE;
 448
 449     if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
 450     {
 451         const char* stab;
 452         const char* stabstr;
 453
 454         stab = image_map_section(&sect_stabs);
 455         stabstr = image_map_section(&sect_stabstr);
 456         if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
 457         {
 458             ret = stabs_parse(module,
 459                               module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 460                               stab, image_get_map_size(&sect_stabs),
 461                               stabstr, image_get_map_size(&sect_stabstr),
 462                               NULL, NULL);
 463         }
 464         image_unmap_section(&sect_stabs);
 465         image_unmap_section(&sect_stabstr);
 466         if (ret) pe_locate_with_coff_symbol_table(module);
 467     }
 468     TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
 469
 470     return ret;
 471 }
 472
 473 /******************************************************************
 474  *              pe_load_dwarf
 475  *
 476  * look for dwarf information in PE header (it's also a way for the mingw compiler
 477  * to provide its debugging information)
 478  */
 479 static BOOL pe_load_dwarf(struct module* module)
 480 {
 481     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 482     BOOL                        ret = FALSE;
 483
 484     ret = dwarf2_parse(module,
 485                        module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 486                        NULL, /* FIXME: some thunks to deal with ? */
 487                        fmap);
 488     TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
 489
 490     return ret;
 491 }
 492
 493 /******************************************************************
 494  *              pe_load_dbg_file
 495  *
 496  * loads a .dbg file
 497  */
 498 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
 499                              const char* dbg_name, DWORD timestamp)
 500 {
 501     char                                tmp[MAX_PATH];
 502     HANDLE                              hFile = INVALID_HANDLE_VALUE, hMap = 0;
 503     const BYTE*                         dbg_mapping = NULL;
 504     BOOL                                ret = FALSE;
 505
 506     TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
 507
 508     if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
 509         (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
 510                              OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
 511         ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
 512         ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
 513     {
 514         const IMAGE_SEPARATE_DEBUG_HEADER*      hdr;
 515         const IMAGE_SECTION_HEADER*             sectp;
 516         const IMAGE_DEBUG_DIRECTORY*            dbg;
 517
 518         hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
 519         /* section headers come immediately after debug header */
 520         sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
 521         /* and after that and the exported names comes the debug directory */
 522         dbg = (const IMAGE_DEBUG_DIRECTORY*)
 523             (dbg_mapping + sizeof(*hdr) +
 524              hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
 525              hdr->ExportedNamesSize);
 526
 527         ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
 528                                       hdr->NumberOfSections, dbg,
 529                                       hdr->DebugDirectorySize / sizeof(*dbg));
 530     }
 531     else
 532         ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
 533
 534     if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
 535     if (hMap) CloseHandle(hMap);
 536     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 537     return ret;
 538 }
 539
 540 /******************************************************************
 541  *              pe_load_msc_debug_info
 542  *
 543  * Process MSC debug information in PE file.
 544  */
 545 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module)
 546 {
 547     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 548     BOOL                        ret = FALSE;
 549     const IMAGE_DATA_DIRECTORY* dir;
 550     const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
 551     int                         nDbg;
 552     void*                       mapping;
 553     IMAGE_NT_HEADERS*           nth;
 554
 555     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 556     /* Read in debug directory */
 557     dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
 558     nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
 559     if (!nDbg) goto done;
 560
 561     dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
 562
 563     /* Parse debug directory */
 564     if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
 565     {
 566         /* Debug info is stripped to .DBG file */
 567         const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
 568             ((const char*)mapping + dbg->PointerToRawData);
 569
 570         if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
 571             misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
 572         {
 573             WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
 574                      debugstr_w(module->module.ModuleName));
 575         }
 576         else
 577         {
 578             ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
 579         }
 580     }
 581     else
 582     {
 583         const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 584         /* Debug info is embedded into PE module */
 585         ret = pe_load_debug_directory(pcs, module, mapping, sectp,
 586                                       nth->FileHeader.NumberOfSections, dbg, nDbg);
 587     }
 588 done:
 589     pe_unmap_full(fmap);
 590     return ret;
 591 }
 592
 593 /***********************************************************************
 594  *                      pe_load_export_debug_info
 595  */
 596 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module)
 597 {
 598     struct image_file_map*              fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 599     unsigned int                        i;
 600     const IMAGE_EXPORT_DIRECTORY*       exports;
 601     DWORD                               base = module->module.BaseOfImage;
 602     DWORD                               size;
 603     IMAGE_NT_HEADERS*                   nth;
 604     void*                               mapping;
 605
 606     if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
 607
 608     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 609 #if 0
 610     /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
 611     /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
 612     symt_new_public(module, NULL, module->module.ModuleName, base, 1);
 613 #endif
 614
 615     /* Add entry point */
 616     symt_new_public(module, NULL, "EntryPoint",
 617                     base + nth->OptionalHeader.AddressOfEntryPoint, 1);
 618 #if 0
 619     /* FIXME: we'd better store addresses linked to sections rather than
 620        absolute values */
 621     IMAGE_SECTION_HEADER*       section;
 622     /* Add start of sections */
 623     section = (IMAGE_SECTION_HEADER*)
 624         ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 625     for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
 626     {
 627         symt_new_public(module, NULL, section->Name,
 628                         RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
 629     }
 630 #endif
 631
 632     /* Add exported functions */
 633     if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
 634                                                 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
 635     {
 636         const WORD*             ordinals = NULL;
 637         const DWORD_PTR*        functions = NULL;
 638         const DWORD*            names = NULL;
 639         unsigned int            j;
 640         char                    buffer[16];
 641
 642         functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
 643         ordinals  = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
 644         names     = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
 645
 646         if (functions && ordinals && names)
 647         {
 648             for (i = 0; i < exports->NumberOfNames; i++)
 649             {
 650                 if (!names[i]) continue;
 651                 symt_new_public(module, NULL,
 652                                 RtlImageRvaToVa(nth, mapping, names[i], NULL),
 653                                 base + functions[ordinals[i]], 1);
 654             }
 655
 656             for (i = 0; i < exports->NumberOfFunctions; i++)
 657             {
 658                 if (!functions[i]) continue;
 659                 /* Check if we already added it with a name */
 660                 for (j = 0; j < exports->NumberOfNames; j++)
 661                     if ((ordinals[j] == i) && names[j]) break;
 662                 if (j < exports->NumberOfNames) continue;
 663                 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
 664                 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1);
 665             }
 666         }
 667     }
 668     /* no real debug info, only entry points */
 669     if (module->module.SymType == SymDeferred)
 670         module->module.SymType = SymExport;
 671     pe_unmap_full(fmap);
 672
 673     return TRUE;
 674 }
 675
 676 /******************************************************************
 677  *              pe_load_debug_info
 678  *
 679  */
 680 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
 681 {
 682     BOOL                ret = FALSE;
 683
 684     if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
 685     {
 686         ret = pe_load_stabs(pcs, module);
 687         ret = pe_load_dwarf(module) || ret;
 688         ret = pe_load_msc_debug_info(pcs, module) || ret;
 689         ret = ret || pe_load_coff_symbol_table(module); /* FIXME */
 690         /* if we still have no debug info (we could only get SymExport at this
 691          * point), then do the SymExport except if we have an ELF container,
 692          * in which case we'll rely on the export's on the ELF side
 693          */
 694     }
 695     /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */
 696     if (pe_load_export_debug_info(pcs, module) && !ret)
 697         ret = TRUE;
 698
 699     return ret;
 700 }
 701
 702 /******************************************************************
 703  *              pe_load_native_module
 704  *
 705  */
 706 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
 707                                      HANDLE hFile, DWORD base, DWORD size)
 708 {
 709     struct module*              module = NULL;
 710     BOOL                        opened = FALSE;
 711     struct module_format*       modfmt;
 712     WCHAR                       loaded_name[MAX_PATH];
 713
 714     loaded_name[0] = '\0';
 715     if (!hFile)
 716     {
 717         assert(name);
 718
 719         if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
 720             return NULL;
 721         opened = TRUE;
 722     }
 723     else if (name) strcpyW(loaded_name, name);
 724     else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 725         FIXME("Trouble ahead (no module name passed in deferred mode)\n");
 726     if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info))))
 727         return NULL;
 728     modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1);
 729     if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE))
 730     {
 731         if (!base) base = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
 732         if (!size) size = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
 733
 734         module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
 735                             modfmt->u.pe_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
 736                             modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum);
 737         if (module)
 738         {
 739             modfmt->module = module;
 740             modfmt->remove = pe_module_remove;
 741             modfmt->loc_compute = NULL;
 742
 743             module->format_info[DFI_PE] = modfmt;
 744             if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 745                 module->module.SymType = SymDeferred;
 746             else
 747                 pe_load_debug_info(pcs, module);
 748         }
 749         else
 750         {
 751             ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
 752             pe_unmap_file(&modfmt->u.pe_info->fmap);
 753         }
 754     }
 755     if (!module) HeapFree(GetProcessHeap(), 0, modfmt);
 756
 757     if (opened) CloseHandle(hFile);
 758
 759     return module;
 760 }
 761
 762 /******************************************************************
 763  *              pe_load_nt_header
 764  *
 765  */
 766 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
 767 {
 768     IMAGE_DOS_HEADER    dos;
 769
 770     return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
 771         dos.e_magic == IMAGE_DOS_SIGNATURE &&
 772         ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
 773                           nth, sizeof(*nth), NULL) &&
 774         nth->Signature == IMAGE_NT_SIGNATURE;
 775 }
 776
 777 /******************************************************************
 778  *              pe_load_builtin_module
 779  *
 780  */
 781 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
 782                                       DWORD64 base, DWORD64 size)
 783 {
 784     struct module*      module = NULL;
 785
 786     if (base && pcs->dbg_hdr_addr)
 787     {
 788         IMAGE_NT_HEADERS    nth;
 789
 790         if (pe_load_nt_header(pcs->handle, base, &nth))
 791         {
 792             if (!size) size = nth.OptionalHeader.SizeOfImage;
 793             module = module_new(pcs, name, DMT_PE, FALSE, base, size,
 794                                 nth.FileHeader.TimeDateStamp,
 795                                 nth.OptionalHeader.CheckSum);
 796         }
 797     }
 798     return module;
 799 }
 800
 801 /***********************************************************************
 802  *           ImageDirectoryEntryToDataEx (DBGHELP.@)
 803  *
 804  * Search for specified directory in PE image
 805  *
 806  * PARAMS
 807  *
 808  *   base    [in]  Image base address
 809  *   image   [in]  TRUE - image has been loaded by loader, FALSE - raw file image
 810  *   dir     [in]  Target directory index
 811  *   size    [out] Receives directory size
 812  *   section [out] Receives pointer to section header of section containing directory data
 813  *
 814  * RETURNS
 815  *   Success: pointer to directory data
 816  *   Failure: NULL
 817  *
 818  */
 819 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
 820 {
 821     const IMAGE_NT_HEADERS *nt;
 822     DWORD addr;
 823
 824     *size = 0;
 825     if (section) *section = NULL;
 826
 827     if (!(nt = RtlImageNtHeader( base ))) return NULL;
 828     if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
 829     if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
 830
 831     *size = nt->OptionalHeader.DataDirectory[dir].Size;
 832     if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
 833
 834     return RtlImageRvaToVa( nt, base, addr, section );
 835 }
 836
 837 /***********************************************************************
 838  *         ImageDirectoryEntryToData   (DBGHELP.@)
 839  *
 840  * NOTES
 841  *   See ImageDirectoryEntryToDataEx
 842  */
 843 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
 844 {
 845     return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
 846 }