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_is_valid_pointer_table
 176  *
 177  * Checks whether the PointerToSymbolTable and NumberOfSymbols in file_header contain
 178  * valid information.
 179  */
 180 static BOOL pe_is_valid_pointer_table(const IMAGE_NT_HEADERS* nthdr, const void* mapping)
 181 {
 182     DWORD64     offset;
 183
 184     /* is the iSym table inside file image ? */
 185     offset = (DWORD64)nthdr->FileHeader.PointerToSymbolTable;
 186     offset += (DWORD64)nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
 187     if (offset > (DWORD64)nthdr->OptionalHeader.SizeOfImage) return FALSE;
 188     /* is string table (following iSym table) inside file image ? */
 189     offset += *(DWORD*)((const char*)mapping + offset);
 190     return offset <= (DWORD64)nthdr->OptionalHeader.SizeOfImage;
 191 }
 192
 193 /******************************************************************
 194  *              pe_map_file
 195  *
 196  * Maps an PE file into memory (and checks it's a real PE file)
 197  */
 198 static BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
 199 {
 200     void*       mapping;
 201
 202     fmap->modtype = mt;
 203     fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
 204     if (fmap->u.pe.hMap == 0) return FALSE;
 205     fmap->u.pe.full_count = 0;
 206     fmap->u.pe.full_map = NULL;
 207     if (!(mapping = pe_map_full(fmap, NULL))) goto error;
 208
 209     switch (mt)
 210     {
 211     case DMT_PE:
 212         {
 213             IMAGE_NT_HEADERS*       nthdr;
 214             IMAGE_SECTION_HEADER*   section;
 215             unsigned                i;
 216
 217             if (!(nthdr = RtlImageNtHeader(mapping))) goto error;
 218             memcpy(&fmap->u.pe.ntheader, nthdr, sizeof(fmap->u.pe.ntheader));
 219             section = (IMAGE_SECTION_HEADER*)
 220                 ((char*)&nthdr->OptionalHeader + nthdr->FileHeader.SizeOfOptionalHeader);
 221             fmap->u.pe.sect = HeapAlloc(GetProcessHeap(), 0,
 222                                         nthdr->FileHeader.NumberOfSections * sizeof(fmap->u.pe.sect[0]));
 223             if (!fmap->u.pe.sect) goto error;
 224             for (i = 0; i < nthdr->FileHeader.NumberOfSections; i++)
 225             {
 226                 memcpy(&fmap->u.pe.sect[i].shdr, section + i, sizeof(IMAGE_SECTION_HEADER));
 227                 fmap->u.pe.sect[i].mapped = IMAGE_NO_MAP;
 228             }
 229             if (nthdr->FileHeader.PointerToSymbolTable && nthdr->FileHeader.NumberOfSymbols)
 230             {
 231                 if (pe_is_valid_pointer_table(nthdr, mapping))
 232                 {
 233                     /* FIXME ugly: should rather map the relevant content instead of copying it */
 234                     const char* src = (const char*)mapping +
 235                         nthdr->FileHeader.PointerToSymbolTable +
 236                         nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
 237                     char* dst;
 238                     DWORD sz = *(DWORD*)src;
 239
 240                     if ((dst = HeapAlloc(GetProcessHeap(), 0, sz)))
 241                         memcpy(dst, src, sz);
 242                     fmap->u.pe.strtable = dst;
 243                 }
 244                 else
 245                 {
 246                     /* we have bad information here, wipe it out */
 247                     fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable = 0;
 248                     fmap->u.pe.ntheader.FileHeader.NumberOfSymbols = 0;
 249                     fmap->u.pe.strtable = NULL;
 250                 }
 251             }
 252             else fmap->u.pe.strtable = NULL;
 253         }
 254         break;
 255     default: assert(0); goto error;
 256     }
 257     pe_unmap_full(fmap);
 258
 259     return TRUE;
 260 error:
 261     pe_unmap_full(fmap);
 262     CloseHandle(fmap->u.pe.hMap);
 263     return FALSE;
 264 }
 265
 266 /******************************************************************
 267  *              pe_unmap_file
 268  *
 269  * Unmaps an PE file from memory (previously mapped with pe_map_file)
 270  */
 271 static void pe_unmap_file(struct image_file_map* fmap)
 272 {
 273     if (fmap->u.pe.hMap != 0)
 274     {
 275         struct image_section_map  ism;
 276         ism.fmap = fmap;
 277         for (ism.sidx = 0; ism.sidx < fmap->u.pe.ntheader.FileHeader.NumberOfSections; ism.sidx++)
 278         {
 279             pe_unmap_section(&ism);
 280         }
 281         while (fmap->u.pe.full_count) pe_unmap_full(fmap);
 282         HeapFree(GetProcessHeap(), 0, fmap->u.pe.sect);
 283         HeapFree(GetProcessHeap(), 0, (void*)fmap->u.pe.strtable); /* FIXME ugly (see pe_map_file) */
 284         CloseHandle(fmap->u.pe.hMap);
 285         fmap->u.pe.hMap = NULL;
 286     }
 287 }
 288
 289 /******************************************************************
 290  *              pe_map_directory
 291  *
 292  * Maps a directory content out of a PE file
 293  */
 294 const char* pe_map_directory(struct module* module, int dirno, DWORD* size)
 295 {
 296     IMAGE_NT_HEADERS*   nth;
 297     void*               mapping;
 298
 299     if (module->type != DMT_PE || !module->format_info[DFI_PE]) return NULL;
 300     if (dirno >= IMAGE_NUMBEROF_DIRECTORY_ENTRIES ||
 301         !(mapping = pe_map_full(&module->format_info[DFI_PE]->u.pe_info->fmap, &nth)))
 302         return NULL;
 303     if (size) *size = nth->OptionalHeader.DataDirectory[dirno].Size;
 304     return RtlImageRvaToVa(nth, mapping,
 305                            nth->OptionalHeader.DataDirectory[dirno].VirtualAddress, NULL);
 306 }
 307
 308 /******************************************************************
 309  *              pe_unmap_directory
 310  *
 311  * Unmaps a directory content
 312  */
 313 void pe_unmap_directory(struct image_file_map* fmap, int dirno)
 314 {
 315     pe_unmap_full(fmap);
 316 }
 317
 318 static void pe_module_remove(struct process* pcs, struct module_format* modfmt)
 319 {
 320     pe_unmap_file(&modfmt->u.pe_info->fmap);
 321     HeapFree(GetProcessHeap(), 0, modfmt);
 322 }
 323
 324 /******************************************************************
 325  *              pe_locate_with_coff_symbol_table
 326  *
 327  * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
 328  * of global symbols.
 329  * Mingw32 requires this for stabs debug information as address for global variables isn't filled in
 330  * (this is similar to what is done in elf_module.c when using the .symtab ELF section)
 331  */
 332 static BOOL pe_locate_with_coff_symbol_table(struct module* module)
 333 {
 334     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 335     const IMAGE_SYMBOL* isym;
 336     int                 i, numsym, naux;
 337     char                tmp[9];
 338     const char*         name;
 339     struct hash_table_iter      hti;
 340     void*               ptr;
 341     struct symt_data*   sym;
 342     const char*         mapping;
 343
 344     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 345     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 346         return TRUE;
 347     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 348     isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 349
 350     for (i = 0; i < numsym; i+= naux, isym += naux)
 351     {
 352         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 353             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 354         {
 355             if (isym->N.Name.Short)
 356             {
 357                 name = memcpy(tmp, isym->N.ShortName, 8);
 358                 tmp[8] = '\0';
 359             }
 360             else name = fmap->u.pe.strtable + isym->N.Name.Long;
 361             if (name[0] == '_') name++;
 362             hash_table_iter_init(&module->ht_symbols, &hti, name);
 363             while ((ptr = hash_table_iter_up(&hti)))
 364             {
 365                 sym = GET_ENTRY(ptr, struct symt_data, hash_elt);
 366                 if (sym->symt.tag == SymTagData &&
 367                     (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
 368                     !strcmp(sym->hash_elt.name, name))
 369                 {
 370                     TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
 371                           isym->SectionNumber, name, sym->u.var.offset,
 372                           wine_dbgstr_longlong(module->module.BaseOfImage +
 373                                                fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
 374                                                isym->Value));
 375                     sym->u.var.offset = module->module.BaseOfImage +
 376                         fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
 377                     break;
 378                 }
 379             }
 380         }
 381         naux = isym->NumberOfAuxSymbols + 1;
 382     }
 383     pe_unmap_full(fmap);
 384     return TRUE;
 385 }
 386
 387 /******************************************************************
 388  *              pe_load_coff_symbol_table
 389  *
 390  * Load public symbols out of the COFF symbol table (if any).
 391  */
 392 static BOOL pe_load_coff_symbol_table(struct module* module)
 393 {
 394     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 395     const IMAGE_SYMBOL* isym;
 396     int                 i, numsym, naux;
 397     const char*         strtable;
 398     char                tmp[9];
 399     const char*         name;
 400     const char*         lastfilename = NULL;
 401     struct symt_compiland*   compiland = NULL;
 402     const IMAGE_SECTION_HEADER* sect;
 403     const char*         mapping;
 404
 405     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 406     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 407         return TRUE;
 408     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 409     isym = (const IMAGE_SYMBOL*)((const char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 410     /* FIXME: no way to get strtable size */
 411     strtable = (const char*)&isym[numsym];
 412     sect = IMAGE_FIRST_SECTION(&fmap->u.pe.ntheader);
 413
 414     for (i = 0; i < numsym; i+= naux, isym += naux)
 415     {
 416         if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
 417         {
 418             lastfilename = (const char*)(isym + 1);
 419             compiland = NULL;
 420         }
 421         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 422             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 423         {
 424             if (isym->N.Name.Short)
 425             {
 426                 name = memcpy(tmp, isym->N.ShortName, 8);
 427                 tmp[8] = '\0';
 428             }
 429             else name = strtable + isym->N.Name.Long;
 430             if (name[0] == '_') name++;
 431
 432             if (!compiland && lastfilename)
 433                 compiland = symt_new_compiland(module, 0,
 434                                                source_new(module, NULL, lastfilename));
 435
 436             if (!(dbghelp_options & SYMOPT_NO_PUBLICS))
 437                 symt_new_public(module, compiland, name,
 438                                 module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress +
 439                                      isym->Value,
 440                                 1);
 441         }
 442         naux = isym->NumberOfAuxSymbols + 1;
 443     }
 444     module->module.SymType = SymCoff;
 445     module->module.LineNumbers = FALSE;
 446     module->module.GlobalSymbols = FALSE;
 447     module->module.TypeInfo = FALSE;
 448     module->module.SourceIndexed = FALSE;
 449     module->module.Publics = TRUE;
 450     pe_unmap_full(fmap);
 451
 452     return TRUE;
 453 }
 454
 455 static inline void* pe_get_sect(IMAGE_NT_HEADERS* nth, void* mapping,
 456                                 IMAGE_SECTION_HEADER* sect)
 457 {
 458     return (sect) ? RtlImageRvaToVa(nth, mapping, sect->VirtualAddress, NULL) : NULL;
 459 }
 460
 461 static inline DWORD pe_get_sect_size(IMAGE_SECTION_HEADER* sect)
 462 {
 463     return (sect) ? sect->SizeOfRawData : 0;
 464 }
 465
 466 /******************************************************************
 467  *              pe_load_stabs
 468  *
 469  * look for stabs information in PE header (it's how the mingw compiler provides
 470  * its debugging information)
 471  */
 472 static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
 473 {
 474     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 475     struct image_section_map    sect_stabs, sect_stabstr;
 476     BOOL                        ret = FALSE;
 477
 478     if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
 479     {
 480         const char* stab;
 481         const char* stabstr;
 482
 483         stab = image_map_section(&sect_stabs);
 484         stabstr = image_map_section(&sect_stabstr);
 485         if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
 486         {
 487             ret = stabs_parse(module,
 488                               module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 489                               stab, image_get_map_size(&sect_stabs),
 490                               stabstr, image_get_map_size(&sect_stabstr),
 491                               NULL, NULL);
 492         }
 493         image_unmap_section(&sect_stabs);
 494         image_unmap_section(&sect_stabstr);
 495         if (ret) pe_locate_with_coff_symbol_table(module);
 496     }
 497     TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
 498
 499     return ret;
 500 }
 501
 502 /******************************************************************
 503  *              pe_load_dwarf
 504  *
 505  * look for dwarf information in PE header (it's also a way for the mingw compiler
 506  * to provide its debugging information)
 507  */
 508 static BOOL pe_load_dwarf(struct module* module)
 509 {
 510     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 511     BOOL                        ret = FALSE;
 512
 513     ret = dwarf2_parse(module,
 514                        module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 515                        NULL, /* FIXME: some thunks to deal with ? */
 516                        fmap);
 517     TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
 518
 519     return ret;
 520 }
 521
 522 /******************************************************************
 523  *              pe_load_dbg_file
 524  *
 525  * loads a .dbg file
 526  */
 527 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
 528                              const char* dbg_name, DWORD timestamp)
 529 {
 530     char                                tmp[MAX_PATH];
 531     HANDLE                              hFile = INVALID_HANDLE_VALUE, hMap = 0;
 532     const BYTE*                         dbg_mapping = NULL;
 533     BOOL                                ret = FALSE;
 534
 535     TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
 536
 537     if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
 538         (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
 539                              OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
 540         ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
 541         ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
 542     {
 543         const IMAGE_SEPARATE_DEBUG_HEADER*      hdr;
 544         const IMAGE_SECTION_HEADER*             sectp;
 545         const IMAGE_DEBUG_DIRECTORY*            dbg;
 546
 547         hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
 548         /* section headers come immediately after debug header */
 549         sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
 550         /* and after that and the exported names comes the debug directory */
 551         dbg = (const IMAGE_DEBUG_DIRECTORY*)
 552             (dbg_mapping + sizeof(*hdr) +
 553              hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
 554              hdr->ExportedNamesSize);
 555
 556         ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
 557                                       hdr->NumberOfSections, dbg,
 558                                       hdr->DebugDirectorySize / sizeof(*dbg));
 559     }
 560     else
 561         ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
 562
 563     if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
 564     if (hMap) CloseHandle(hMap);
 565     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 566     return ret;
 567 }
 568
 569 /******************************************************************
 570  *              pe_load_msc_debug_info
 571  *
 572  * Process MSC debug information in PE file.
 573  */
 574 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module)
 575 {
 576     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 577     BOOL                        ret = FALSE;
 578     const IMAGE_DATA_DIRECTORY* dir;
 579     const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
 580     int                         nDbg;
 581     void*                       mapping;
 582     IMAGE_NT_HEADERS*           nth;
 583
 584     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 585     /* Read in debug directory */
 586     dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
 587     nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
 588     if (!nDbg) goto done;
 589
 590     dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
 591
 592     /* Parse debug directory */
 593     if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
 594     {
 595         /* Debug info is stripped to .DBG file */
 596         const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
 597             ((const char*)mapping + dbg->PointerToRawData);
 598
 599         if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
 600             misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
 601         {
 602             WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
 603                      debugstr_w(module->module.ModuleName));
 604         }
 605         else
 606         {
 607             ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
 608         }
 609     }
 610     else
 611     {
 612         const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 613         /* Debug info is embedded into PE module */
 614         ret = pe_load_debug_directory(pcs, module, mapping, sectp,
 615                                       nth->FileHeader.NumberOfSections, dbg, nDbg);
 616     }
 617 done:
 618     pe_unmap_full(fmap);
 619     return ret;
 620 }
 621
 622 /***********************************************************************
 623  *                      pe_load_export_debug_info
 624  */
 625 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module)
 626 {
 627     struct image_file_map*              fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 628     unsigned int                        i;
 629     const IMAGE_EXPORT_DIRECTORY*       exports;
 630     DWORD                               base = module->module.BaseOfImage;
 631     DWORD                               size;
 632     IMAGE_NT_HEADERS*                   nth;
 633     void*                               mapping;
 634
 635     if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
 636
 637     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 638 #if 0
 639     /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
 640     /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
 641     symt_new_public(module, NULL, module->module.ModuleName, base, 1);
 642 #endif
 643
 644     /* Add entry point */
 645     symt_new_public(module, NULL, "EntryPoint",
 646                     base + nth->OptionalHeader.AddressOfEntryPoint, 1);
 647 #if 0
 648     /* FIXME: we'd better store addresses linked to sections rather than
 649        absolute values */
 650     IMAGE_SECTION_HEADER*       section;
 651     /* Add start of sections */
 652     section = (IMAGE_SECTION_HEADER*)
 653         ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 654     for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
 655     {
 656         symt_new_public(module, NULL, section->Name,
 657                         RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
 658     }
 659 #endif
 660
 661     /* Add exported functions */
 662     if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
 663                                                 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
 664     {
 665         const WORD*             ordinals = NULL;
 666         const DWORD_PTR*        functions = NULL;
 667         const DWORD*            names = NULL;
 668         unsigned int            j;
 669         char                    buffer[16];
 670
 671         functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
 672         ordinals  = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
 673         names     = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
 674
 675         if (functions && ordinals && names)
 676         {
 677             for (i = 0; i < exports->NumberOfNames; i++)
 678             {
 679                 if (!names[i]) continue;
 680                 symt_new_public(module, NULL,
 681                                 RtlImageRvaToVa(nth, mapping, names[i], NULL),
 682                                 base + functions[ordinals[i]], 1);
 683             }
 684
 685             for (i = 0; i < exports->NumberOfFunctions; i++)
 686             {
 687                 if (!functions[i]) continue;
 688                 /* Check if we already added it with a name */
 689                 for (j = 0; j < exports->NumberOfNames; j++)
 690                     if ((ordinals[j] == i) && names[j]) break;
 691                 if (j < exports->NumberOfNames) continue;
 692                 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
 693                 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1);
 694             }
 695         }
 696     }
 697     /* no real debug info, only entry points */
 698     if (module->module.SymType == SymDeferred)
 699         module->module.SymType = SymExport;
 700     pe_unmap_full(fmap);
 701
 702     return TRUE;
 703 }
 704
 705 /******************************************************************
 706  *              pe_load_debug_info
 707  *
 708  */
 709 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
 710 {
 711     BOOL                ret = FALSE;
 712
 713     if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
 714     {
 715         ret = pe_load_stabs(pcs, module);
 716         ret = pe_load_dwarf(module) || ret;
 717         ret = pe_load_msc_debug_info(pcs, module) || ret;
 718         ret = ret || pe_load_coff_symbol_table(module); /* FIXME */
 719         /* if we still have no debug info (we could only get SymExport at this
 720          * point), then do the SymExport except if we have an ELF container,
 721          * in which case we'll rely on the export's on the ELF side
 722          */
 723     }
 724     /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */
 725     if (pe_load_export_debug_info(pcs, module) && !ret)
 726         ret = TRUE;
 727
 728     return ret;
 729 }
 730
 731 /******************************************************************
 732  *              pe_load_native_module
 733  *
 734  */
 735 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
 736                                      HANDLE hFile, DWORD base, DWORD size)
 737 {
 738     struct module*              module = NULL;
 739     BOOL                        opened = FALSE;
 740     struct module_format*       modfmt;
 741     WCHAR                       loaded_name[MAX_PATH];
 742
 743     loaded_name[0] = '\0';
 744     if (!hFile)
 745     {
 746         assert(name);
 747
 748         if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
 749             return NULL;
 750         opened = TRUE;
 751     }
 752     else if (name) strcpyW(loaded_name, name);
 753     else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 754         FIXME("Trouble ahead (no module name passed in deferred mode)\n");
 755     if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info))))
 756         return NULL;
 757     modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1);
 758     if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE))
 759     {
 760         if (!base) base = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
 761         if (!size) size = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
 762
 763         module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
 764                             modfmt->u.pe_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
 765                             modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum);
 766         if (module)
 767         {
 768             modfmt->module = module;
 769             modfmt->remove = pe_module_remove;
 770             modfmt->loc_compute = NULL;
 771
 772             module->format_info[DFI_PE] = modfmt;
 773             if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 774                 module->module.SymType = SymDeferred;
 775             else
 776                 pe_load_debug_info(pcs, module);
 777         }
 778         else
 779         {
 780             ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
 781             pe_unmap_file(&modfmt->u.pe_info->fmap);
 782         }
 783     }
 784     if (!module) HeapFree(GetProcessHeap(), 0, modfmt);
 785
 786     if (opened) CloseHandle(hFile);
 787
 788     return module;
 789 }
 790
 791 /******************************************************************
 792  *              pe_load_nt_header
 793  *
 794  */
 795 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
 796 {
 797     IMAGE_DOS_HEADER    dos;
 798
 799     return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
 800         dos.e_magic == IMAGE_DOS_SIGNATURE &&
 801         ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
 802                           nth, sizeof(*nth), NULL) &&
 803         nth->Signature == IMAGE_NT_SIGNATURE;
 804 }
 805
 806 /******************************************************************
 807  *              pe_load_builtin_module
 808  *
 809  */
 810 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
 811                                       DWORD64 base, DWORD64 size)
 812 {
 813     struct module*      module = NULL;
 814
 815     if (base && pcs->dbg_hdr_addr)
 816     {
 817         IMAGE_NT_HEADERS    nth;
 818
 819         if (pe_load_nt_header(pcs->handle, base, &nth))
 820         {
 821             if (!size) size = nth.OptionalHeader.SizeOfImage;
 822             module = module_new(pcs, name, DMT_PE, FALSE, base, size,
 823                                 nth.FileHeader.TimeDateStamp,
 824                                 nth.OptionalHeader.CheckSum);
 825         }
 826     }
 827     return module;
 828 }
 829
 830 /***********************************************************************
 831  *           ImageDirectoryEntryToDataEx (DBGHELP.@)
 832  *
 833  * Search for specified directory in PE image
 834  *
 835  * PARAMS
 836  *
 837  *   base    [in]  Image base address
 838  *   image   [in]  TRUE - image has been loaded by loader, FALSE - raw file image
 839  *   dir     [in]  Target directory index
 840  *   size    [out] Receives directory size
 841  *   section [out] Receives pointer to section header of section containing directory data
 842  *
 843  * RETURNS
 844  *   Success: pointer to directory data
 845  *   Failure: NULL
 846  *
 847  */
 848 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
 849 {
 850     const IMAGE_NT_HEADERS *nt;
 851     DWORD addr;
 852
 853     *size = 0;
 854     if (section) *section = NULL;
 855
 856     if (!(nt = RtlImageNtHeader( base ))) return NULL;
 857     if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
 858     if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
 859
 860     *size = nt->OptionalHeader.DataDirectory[dir].Size;
 861     if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
 862
 863     return RtlImageRvaToVa( nt, base, addr, section );
 864 }
 865
 866 /***********************************************************************
 867  *         ImageDirectoryEntryToData   (DBGHELP.@)
 868  *
 869  * NOTES
 870  *   See ImageDirectoryEntryToDataEx
 871  */
 872 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
 873 {
 874     return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
 875 }