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 #ifndef DBGHELP_STATIC_LIB
  35 #include "winternl.h"
  36 #include "wine/debug.h"
  37 #endif
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  40
  41 struct pe_module_info
  42 {
  43     struct image_file_map       fmap;
  44 };
  45
  46 static void* pe_map_full(struct image_file_map* fmap, IMAGE_NT_HEADERS** nth)
  47 {
  48     if (!fmap->u.pe.full_map)
  49     {
  50         fmap->u.pe.full_map = MapViewOfFile(fmap->u.pe.hMap, FILE_MAP_READ, 0, 0, 0);
  51     }
  52     if (fmap->u.pe.full_map)
  53     {
  54         if (nth) *nth = RtlImageNtHeader(fmap->u.pe.full_map);
  55         fmap->u.pe.full_count++;
  56         return fmap->u.pe.full_map;
  57     }
  58     return IMAGE_NO_MAP;
  59 }
  60
  61 static void pe_unmap_full(struct image_file_map* fmap)
  62 {
  63     if (fmap->u.pe.full_count && !--fmap->u.pe.full_count)
  64     {
  65         UnmapViewOfFile(fmap->u.pe.full_map);
  66         fmap->u.pe.full_map = NULL;
  67     }
  68 }
  69
  70 /******************************************************************
  71  *              pe_map_section
  72  *
  73  * Maps a single section into memory from an PE file
  74  */
  75 const char* pe_map_section(struct image_section_map* ism)
  76 {
  77     void*       mapping;
  78     struct pe_file_map* fmap = &ism->fmap->u.pe;
  79
  80     if (ism->sidx >= 0 && ism->sidx < fmap->ntheader.FileHeader.NumberOfSections &&
  81         fmap->sect[ism->sidx].mapped == IMAGE_NO_MAP)
  82     {
  83         IMAGE_NT_HEADERS*       nth;
  84
  85         if (fmap->sect[ism->sidx].shdr.Misc.VirtualSize > fmap->sect[ism->sidx].shdr.SizeOfRawData)
  86         {
  87             FIXME("Section %ld: virtual (0x%x) > raw (0x%x) size - not supported\n",
  88                   ism->sidx, fmap->sect[ism->sidx].shdr.Misc.VirtualSize,
  89                   fmap->sect[ism->sidx].shdr.SizeOfRawData);
  90             return IMAGE_NO_MAP;
  91         }
  92         /* FIXME: that's rather drastic, but that will do for now
  93          * that's ok if the full file map exists, but we could be less aggressive otherwise and
  94          * only map the relevant section
  95          */
  96         if ((mapping = pe_map_full(ism->fmap, &nth)))
  97         {
  98             fmap->sect[ism->sidx].mapped = RtlImageRvaToVa(nth, mapping,
  99                                                            fmap->sect[ism->sidx].shdr.VirtualAddress,
 100                                                            NULL);
 101             return fmap->sect[ism->sidx].mapped;
 102         }
 103     }
 104     return IMAGE_NO_MAP;
 105 }
 106
 107 /******************************************************************
 108  *              pe_find_section
 109  *
 110  * Finds a section by name (and type) into memory from an PE file
 111  * or its alternate if any
 112  */
 113 BOOL pe_find_section(struct image_file_map* fmap, const char* name,
 114                      struct image_section_map* ism)
 115 {
 116     const char*                 sectname;
 117     unsigned                    i;
 118     char                        tmp[IMAGE_SIZEOF_SHORT_NAME + 1];
 119
 120     for (i = 0; i < fmap->u.pe.ntheader.FileHeader.NumberOfSections; i++)
 121     {
 122         sectname = (const char*)fmap->u.pe.sect[i].shdr.Name;
 123         /* long section names start with a '/' (at least on MinGW32) */
 124         if (sectname[0] == '/' && fmap->u.pe.strtable)
 125             sectname = fmap->u.pe.strtable + atoi(sectname + 1);
 126         else
 127         {
 128             /* the section name may not be null terminated */
 129             sectname = memcpy(tmp, sectname, IMAGE_SIZEOF_SHORT_NAME);
 130             tmp[IMAGE_SIZEOF_SHORT_NAME] = '\0';
 131         }
 132         if (!strcasecmp(sectname, name))
 133         {
 134             ism->fmap = fmap;
 135             ism->sidx = i;
 136             return TRUE;
 137         }
 138     }
 139     ism->fmap = NULL;
 140     ism->sidx = -1;
 141
 142     return FALSE;
 143 }
 144
 145 /******************************************************************
 146  *              pe_unmap_section
 147  *
 148  * Unmaps a single section from memory
 149  */
 150 void pe_unmap_section(struct image_section_map* ism)
 151 {
 152     if (ism->sidx >= 0 && ism->sidx < ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections &&
 153         ism->fmap->u.pe.sect[ism->sidx].mapped != IMAGE_NO_MAP)
 154     {
 155         pe_unmap_full(ism->fmap);
 156         ism->fmap->u.pe.sect[ism->sidx].mapped = IMAGE_NO_MAP;
 157     }
 158 }
 159
 160 /******************************************************************
 161  *              pe_get_map_rva
 162  *
 163  * Get the RVA of an PE section
 164  */
 165 DWORD_PTR pe_get_map_rva(const struct image_section_map* ism)
 166 {
 167     if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 168         return 0;
 169     return ism->fmap->u.pe.sect[ism->sidx].shdr.VirtualAddress;
 170 }
 171
 172 /******************************************************************
 173  *              pe_get_map_size
 174  *
 175  * Get the size of a PE section
 176  */
 177 unsigned pe_get_map_size(const struct image_section_map* ism)
 178 {
 179     if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 180         return 0;
 181     return ism->fmap->u.pe.sect[ism->sidx].shdr.Misc.VirtualSize;
 182 }
 183
 184 /******************************************************************
 185  *              pe_is_valid_pointer_table
 186  *
 187  * Checks whether the PointerToSymbolTable and NumberOfSymbols in file_header contain
 188  * valid information.
 189  */
 190 static BOOL pe_is_valid_pointer_table(const IMAGE_NT_HEADERS* nthdr, const void* mapping, DWORD64 sz)
 191 {
 192     DWORD64     offset;
 193
 194     /* is the iSym table inside file size ? (including first DWORD of string table, which is its size) */
 195     offset = (DWORD64)nthdr->FileHeader.PointerToSymbolTable;
 196     offset += (DWORD64)nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
 197     if (offset + sizeof(DWORD) > sz) return FALSE;
 198     /* is string table (following iSym table) inside file size ? */
 199     offset += *(DWORD*)((const char*)mapping + offset);
 200     return offset <= sz;
 201 }
 202
 203 /******************************************************************
 204  *              pe_map_file
 205  *
 206  * Maps an PE file into memory (and checks it's a real PE file)
 207  */
 208 static BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
 209 {
 210     void*       mapping;
 211
 212     fmap->modtype = mt;
 213     fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
 214     if (fmap->u.pe.hMap == 0) return FALSE;
 215     fmap->u.pe.full_count = 0;
 216     fmap->u.pe.full_map = NULL;
 217     if (!(mapping = pe_map_full(fmap, NULL))) goto error;
 218
 219     switch (mt)
 220     {
 221     case DMT_PE:
 222         {
 223             IMAGE_NT_HEADERS*       nthdr;
 224             IMAGE_SECTION_HEADER*   section;
 225             unsigned                i;
 226
 227             if (!(nthdr = RtlImageNtHeader(mapping))) goto error;
 228             memcpy(&fmap->u.pe.ntheader, nthdr, sizeof(fmap->u.pe.ntheader));
 229             switch (nthdr->OptionalHeader.Magic)
 230             {
 231             case 0x10b: fmap->addr_size = 32; break;
 232             case 0x20b: fmap->addr_size = 64; break;
 233             default: return FALSE;
 234             }
 235             section = (IMAGE_SECTION_HEADER*)
 236                 ((char*)&nthdr->OptionalHeader + nthdr->FileHeader.SizeOfOptionalHeader);
 237             fmap->u.pe.sect = HeapAlloc(GetProcessHeap(), 0,
 238                                         nthdr->FileHeader.NumberOfSections * sizeof(fmap->u.pe.sect[0]));
 239             if (!fmap->u.pe.sect) goto error;
 240             for (i = 0; i < nthdr->FileHeader.NumberOfSections; i++)
 241             {
 242                 memcpy(&fmap->u.pe.sect[i].shdr, section + i, sizeof(IMAGE_SECTION_HEADER));
 243                 fmap->u.pe.sect[i].mapped = IMAGE_NO_MAP;
 244             }
 245             if (nthdr->FileHeader.PointerToSymbolTable && nthdr->FileHeader.NumberOfSymbols)
 246             {
 247                 LARGE_INTEGER li;
 248
 249                 if (GetFileSizeEx(file, &li) && pe_is_valid_pointer_table(nthdr, mapping, li.QuadPart))
 250                 {
 251                     /* FIXME ugly: should rather map the relevant content instead of copying it */
 252                     const char* src = (const char*)mapping +
 253                         nthdr->FileHeader.PointerToSymbolTable +
 254                         nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
 255                     char* dst;
 256                     DWORD sz = *(DWORD*)src;
 257
 258                     if ((dst = HeapAlloc(GetProcessHeap(), 0, sz)))
 259                         memcpy(dst, src, sz);
 260                     fmap->u.pe.strtable = dst;
 261                 }
 262                 else
 263                 {
 264                     WARN("Bad coff table... wipping out\n");
 265                     /* we have bad information here, wipe it out */
 266                     fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable = 0;
 267                     fmap->u.pe.ntheader.FileHeader.NumberOfSymbols = 0;
 268                     fmap->u.pe.strtable = NULL;
 269                 }
 270             }
 271             else fmap->u.pe.strtable = NULL;
 272         }
 273         break;
 274     default: assert(0); goto error;
 275     }
 276     pe_unmap_full(fmap);
 277
 278     return TRUE;
 279 error:
 280     pe_unmap_full(fmap);
 281     CloseHandle(fmap->u.pe.hMap);
 282     return FALSE;
 283 }
 284
 285 /******************************************************************
 286  *              pe_unmap_file
 287  *
 288  * Unmaps an PE file from memory (previously mapped with pe_map_file)
 289  */
 290 static void pe_unmap_file(struct image_file_map* fmap)
 291 {
 292     if (fmap->u.pe.hMap != 0)
 293     {
 294         struct image_section_map  ism;
 295         ism.fmap = fmap;
 296         for (ism.sidx = 0; ism.sidx < fmap->u.pe.ntheader.FileHeader.NumberOfSections; ism.sidx++)
 297         {
 298             pe_unmap_section(&ism);
 299         }
 300         while (fmap->u.pe.full_count) pe_unmap_full(fmap);
 301         HeapFree(GetProcessHeap(), 0, fmap->u.pe.sect);
 302         HeapFree(GetProcessHeap(), 0, (void*)fmap->u.pe.strtable); /* FIXME ugly (see pe_map_file) */
 303         CloseHandle(fmap->u.pe.hMap);
 304         fmap->u.pe.hMap = NULL;
 305     }
 306 }
 307
 308 /******************************************************************
 309  *              pe_map_directory
 310  *
 311  * Maps a directory content out of a PE file
 312  */
 313 const char* pe_map_directory(struct module* module, int dirno, DWORD* size)
 314 {
 315     IMAGE_NT_HEADERS*   nth;
 316     void*               mapping;
 317
 318     if (module->type != DMT_PE || !module->format_info[DFI_PE]) return NULL;
 319     if (dirno >= IMAGE_NUMBEROF_DIRECTORY_ENTRIES ||
 320         !(mapping = pe_map_full(&module->format_info[DFI_PE]->u.pe_info->fmap, &nth)))
 321         return NULL;
 322     if (size) *size = nth->OptionalHeader.DataDirectory[dirno].Size;
 323     return RtlImageRvaToVa(nth, mapping,
 324                            nth->OptionalHeader.DataDirectory[dirno].VirtualAddress, NULL);
 325 }
 326
 327 /******************************************************************
 328  *              pe_unmap_directory
 329  *
 330  * Unmaps a directory content
 331  */
 332 void pe_unmap_directory(struct image_file_map* fmap, int dirno)
 333 {
 334     pe_unmap_full(fmap);
 335 }
 336
 337 static void pe_module_remove(struct process* pcs, struct module_format* modfmt)
 338 {
 339     pe_unmap_file(&modfmt->u.pe_info->fmap);
 340     HeapFree(GetProcessHeap(), 0, modfmt);
 341 }
 342
 343 /******************************************************************
 344  *              pe_locate_with_coff_symbol_table
 345  *
 346  * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
 347  * of global symbols.
 348  * Mingw32 requires this for stabs debug information as address for global variables isn't filled in
 349  * (this is similar to what is done in elf_module.c when using the .symtab ELF section)
 350  */
 351 static BOOL pe_locate_with_coff_symbol_table(struct module* module)
 352 {
 353     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 354     const IMAGE_SYMBOL* isym;
 355     int                 i, numsym, naux;
 356     char                tmp[9];
 357     const char*         name;
 358     struct hash_table_iter      hti;
 359     void*               ptr;
 360     struct symt_data*   sym;
 361     const char*         mapping;
 362
 363     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 364     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 365         return TRUE;
 366     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 367     isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 368
 369     for (i = 0; i < numsym; i+= naux, isym += naux)
 370     {
 371         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 372             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 373         {
 374             if (isym->N.Name.Short)
 375             {
 376                 name = memcpy(tmp, isym->N.ShortName, 8);
 377                 tmp[8] = '\0';
 378             }
 379             else name = fmap->u.pe.strtable + isym->N.Name.Long;
 380             if (name[0] == '_') name++;
 381             hash_table_iter_init(&module->ht_symbols, &hti, name);
 382             while ((ptr = hash_table_iter_up(&hti)))
 383             {
 384                 sym = GET_ENTRY(ptr, struct symt_data, hash_elt);
 385                 if (sym->symt.tag == SymTagData &&
 386                     (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
 387                     sym->u.var.kind == loc_absolute &&
 388                     !strcmp(sym->hash_elt.name, name))
 389                 {
 390                     TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
 391                           isym->SectionNumber, name, sym->u.var.offset,
 392                           wine_dbgstr_longlong(module->module.BaseOfImage +
 393                                                fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
 394                                                isym->Value));
 395                     sym->u.var.offset = module->module.BaseOfImage +
 396                         fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
 397                     break;
 398                 }
 399             }
 400         }
 401         naux = isym->NumberOfAuxSymbols + 1;
 402     }
 403     pe_unmap_full(fmap);
 404     return TRUE;
 405 }
 406
 407 /******************************************************************
 408  *              pe_load_coff_symbol_table
 409  *
 410  * Load public symbols out of the COFF symbol table (if any).
 411  */
 412 static BOOL pe_load_coff_symbol_table(struct module* module)
 413 {
 414     struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 415     const IMAGE_SYMBOL* isym;
 416     int                 i, numsym, naux;
 417     const char*         strtable;
 418     char                tmp[9];
 419     const char*         name;
 420     const char*         lastfilename = NULL;
 421     struct symt_compiland*   compiland = NULL;
 422     const IMAGE_SECTION_HEADER* sect;
 423     const char*         mapping;
 424
 425     numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
 426     if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
 427         return TRUE;
 428     if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
 429     isym = (const IMAGE_SYMBOL*)((const char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
 430     /* FIXME: no way to get strtable size */
 431     strtable = (const char*)&isym[numsym];
 432     sect = IMAGE_FIRST_SECTION(RtlImageNtHeader((HMODULE)mapping));
 433
 434     for (i = 0; i < numsym; i+= naux, isym += naux)
 435     {
 436         if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
 437         {
 438             lastfilename = (const char*)(isym + 1);
 439             compiland = NULL;
 440         }
 441         if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
 442             isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
 443         {
 444             if (isym->N.Name.Short)
 445             {
 446                 name = memcpy(tmp, isym->N.ShortName, 8);
 447                 tmp[8] = '\0';
 448             }
 449             else name = strtable + isym->N.Name.Long;
 450             if (name[0] == '_') name++;
 451
 452             if (!compiland && lastfilename)
 453                 compiland = symt_new_compiland(module, 0,
 454                                                source_new(module, NULL, lastfilename));
 455
 456             if (!(dbghelp_options & SYMOPT_NO_PUBLICS))
 457                 symt_new_public(module, compiland, name,
 458                                 module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress +
 459                                      isym->Value,
 460                                 1);
 461         }
 462         naux = isym->NumberOfAuxSymbols + 1;
 463     }
 464     module->module.SymType = SymCoff;
 465     module->module.LineNumbers = FALSE;
 466     module->module.GlobalSymbols = FALSE;
 467     module->module.TypeInfo = FALSE;
 468     module->module.SourceIndexed = FALSE;
 469     module->module.Publics = TRUE;
 470     pe_unmap_full(fmap);
 471
 472     return TRUE;
 473 }
 474
 475 /******************************************************************
 476  *              pe_load_stabs
 477  *
 478  * look for stabs information in PE header (it's how the mingw compiler provides
 479  * its debugging information)
 480  */
 481 static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
 482 {
 483     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 484     struct image_section_map    sect_stabs, sect_stabstr;
 485     BOOL                        ret = FALSE;
 486
 487     if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
 488     {
 489         const char* stab;
 490         const char* stabstr;
 491
 492         stab = image_map_section(&sect_stabs);
 493         stabstr = image_map_section(&sect_stabstr);
 494         if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
 495         {
 496             ret = stabs_parse(module,
 497                               module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 498                               stab, image_get_map_size(&sect_stabs),
 499                               stabstr, image_get_map_size(&sect_stabstr),
 500                               NULL, NULL);
 501         }
 502         image_unmap_section(&sect_stabs);
 503         image_unmap_section(&sect_stabstr);
 504         if (ret) pe_locate_with_coff_symbol_table(module);
 505     }
 506     TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
 507
 508     return ret;
 509 }
 510
 511 /******************************************************************
 512  *              pe_load_dwarf
 513  *
 514  * look for dwarf information in PE header (it's also a way for the mingw compiler
 515  * to provide its debugging information)
 516  */
 517 static BOOL pe_load_dwarf(struct module* module)
 518 {
 519     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 520     BOOL                        ret = FALSE;
 521
 522     ret = dwarf2_parse(module,
 523                        module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
 524                        NULL, /* FIXME: some thunks to deal with ? */
 525                        fmap);
 526     TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
 527
 528     return ret;
 529 }
 530
 531 #ifndef DBGHELP_STATIC_LIB
 532 /******************************************************************
 533  *              pe_load_dbg_file
 534  *
 535  * loads a .dbg file
 536  */
 537 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
 538                              const char* dbg_name, DWORD timestamp)
 539 {
 540     char                                tmp[MAX_PATH];
 541     HANDLE                              hFile = INVALID_HANDLE_VALUE, hMap = 0;
 542     const BYTE*                         dbg_mapping = NULL;
 543     BOOL                                ret = FALSE;
 544
 545     TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
 546
 547     if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
 548         (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
 549                              OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
 550         ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
 551         ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
 552     {
 553         const IMAGE_SEPARATE_DEBUG_HEADER*      hdr;
 554         const IMAGE_SECTION_HEADER*             sectp;
 555         const IMAGE_DEBUG_DIRECTORY*            dbg;
 556
 557         hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
 558         /* section headers come immediately after debug header */
 559         sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
 560         /* and after that and the exported names comes the debug directory */
 561         dbg = (const IMAGE_DEBUG_DIRECTORY*)
 562             (dbg_mapping + sizeof(*hdr) +
 563              hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
 564              hdr->ExportedNamesSize);
 565
 566         ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
 567                                       hdr->NumberOfSections, dbg,
 568                                       hdr->DebugDirectorySize / sizeof(*dbg));
 569     }
 570     else
 571         ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
 572
 573     if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
 574     if (hMap) CloseHandle(hMap);
 575     if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
 576     return ret;
 577 }
 578
 579 /******************************************************************
 580  *              pe_load_msc_debug_info
 581  *
 582  * Process MSC debug information in PE file.
 583  */
 584 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module)
 585 {
 586     struct image_file_map*      fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 587     BOOL                        ret = FALSE;
 588     const IMAGE_DATA_DIRECTORY* dir;
 589     const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
 590     int                         nDbg;
 591     void*                       mapping;
 592     IMAGE_NT_HEADERS*           nth;
 593
 594     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 595     /* Read in debug directory */
 596     dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
 597     nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
 598     if (!nDbg) goto done;
 599
 600     dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
 601
 602     /* Parse debug directory */
 603     if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
 604     {
 605         /* Debug info is stripped to .DBG file */
 606         const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
 607             ((const char*)mapping + dbg->PointerToRawData);
 608
 609         if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
 610             misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
 611         {
 612             ERR("-Debug info stripped, but no .DBG file in module %s\n",
 613                 debugstr_w(module->module.ModuleName));
 614         }
 615         else
 616         {
 617             ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
 618         }
 619     }
 620     else
 621     {
 622         const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 623         /* Debug info is embedded into PE module */
 624         ret = pe_load_debug_directory(pcs, module, mapping, sectp,
 625                                       nth->FileHeader.NumberOfSections, dbg, nDbg);
 626     }
 627 done:
 628     pe_unmap_full(fmap);
 629     return ret;
 630 }
 631 #endif /* DBGHELP_STATIC_LIB */
 632
 633 /***********************************************************************
 634  *                      pe_load_export_debug_info
 635  */
 636 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module)
 637 {
 638     struct image_file_map*              fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
 639     unsigned int                        i;
 640     const IMAGE_EXPORT_DIRECTORY*       exports;
 641     DWORD                               base = module->module.BaseOfImage;
 642     DWORD                               size;
 643     IMAGE_NT_HEADERS*                   nth;
 644     void*                               mapping;
 645
 646     if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
 647
 648     if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
 649 #if 0
 650     /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
 651     /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
 652     symt_new_public(module, NULL, module->module.ModuleName, base, 1);
 653 #endif
 654
 655     /* Add entry point */
 656     symt_new_public(module, NULL, "EntryPoint",
 657                     base + nth->OptionalHeader.AddressOfEntryPoint, 1);
 658 #if 0
 659     /* FIXME: we'd better store addresses linked to sections rather than
 660        absolute values */
 661     IMAGE_SECTION_HEADER*       section;
 662     /* Add start of sections */
 663     section = (IMAGE_SECTION_HEADER*)
 664         ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
 665     for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
 666     {
 667         symt_new_public(module, NULL, section->Name,
 668                         RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
 669     }
 670 #endif
 671
 672     /* Add exported functions */
 673     if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
 674                                                 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
 675     {
 676         const WORD*             ordinals = NULL;
 677         const DWORD_PTR*        functions = NULL;
 678         const DWORD*            names = NULL;
 679         unsigned int            j;
 680         char                    buffer[16];
 681
 682         functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
 683         ordinals  = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
 684         names     = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
 685
 686         if (functions && ordinals && names)
 687         {
 688             for (i = 0; i < exports->NumberOfNames; i++)
 689             {
 690                 if (!names[i]) continue;
 691                 symt_new_public(module, NULL,
 692                                 RtlImageRvaToVa(nth, mapping, names[i], NULL),
 693                                 base + functions[ordinals[i]], 1);
 694             }
 695
 696             for (i = 0; i < exports->NumberOfFunctions; i++)
 697             {
 698                 if (!functions[i]) continue;
 699                 /* Check if we already added it with a name */
 700                 for (j = 0; j < exports->NumberOfNames; j++)
 701                     if ((ordinals[j] == i) && names[j]) break;
 702                 if (j < exports->NumberOfNames) continue;
 703                 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
 704                 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1);
 705             }
 706         }
 707     }
 708     /* no real debug info, only entry points */
 709     if (module->module.SymType == SymDeferred)
 710         module->module.SymType = SymExport;
 711     pe_unmap_full(fmap);
 712
 713     return TRUE;
 714 }
 715
 716 /******************************************************************
 717  *              pe_load_debug_info
 718  *
 719  */
 720 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
 721 {
 722     BOOL                ret = FALSE;
 723
 724     if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
 725     {
 726         ret = pe_load_stabs(pcs, module);
 727         ret = pe_load_dwarf(module) || ret;
 728         #ifndef DBGHELP_STATIC_LIB
 729         ret = pe_load_msc_debug_info(pcs, module) || ret;
 730         #endif
 731         ret = ret || pe_load_coff_symbol_table(module); /* FIXME */
 732         /* if we still have no debug info (we could only get SymExport at this
 733          * point), then do the SymExport except if we have an ELF container,
 734          * in which case we'll rely on the export's on the ELF side
 735          */
 736     }
 737     /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */
 738     if (pe_load_export_debug_info(pcs, module) && !ret)
 739         ret = TRUE;
 740
 741     return ret;
 742 }
 743
 744 /******************************************************************
 745  *              pe_load_native_module
 746  *
 747  */
 748 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
 749                                      HANDLE hFile, DWORD64 base, DWORD size)
 750 {
 751     struct module*              module = NULL;
 752     BOOL                        opened = FALSE;
 753     struct module_format*       modfmt;
 754     WCHAR                       loaded_name[MAX_PATH];
 755
 756     loaded_name[0] = '\0';
 757     if (!hFile)
 758     {
 759         assert(name);
 760
 761         if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
 762             return NULL;
 763         opened = TRUE;
 764     }
 765     else if (name) strcpyW(loaded_name, name);
 766     else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 767         FIXME("Trouble ahead (no module name passed in deferred mode)\n");
 768     if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info))))
 769         return NULL;
 770     modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1);
 771     if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE))
 772     {
 773         if (!base) base = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
 774         if (!size) size = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
 775
 776         module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
 777                             modfmt->u.pe_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
 778                             modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum);
 779         if (module)
 780         {
 781             modfmt->module = module;
 782             modfmt->remove = pe_module_remove;
 783             modfmt->loc_compute = NULL;
 784
 785             module->format_info[DFI_PE] = modfmt;
 786             if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
 787                 module->module.SymType = SymDeferred;
 788             else
 789                 pe_load_debug_info(pcs, module);
 790             module->reloc_delta = base - modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
 791         }
 792         else
 793         {
 794             ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
 795             pe_unmap_file(&modfmt->u.pe_info->fmap);
 796         }
 797     }
 798     if (!module) HeapFree(GetProcessHeap(), 0, modfmt);
 799
 800     if (opened) CloseHandle(hFile);
 801
 802     return module;
 803 }
 804
 805 /******************************************************************
 806  *              pe_load_nt_header
 807  *
 808  */
 809 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
 810 {
 811     IMAGE_DOS_HEADER    dos;
 812
 813     return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
 814         dos.e_magic == IMAGE_DOS_SIGNATURE &&
 815         ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
 816                           nth, sizeof(*nth), NULL) &&
 817         nth->Signature == IMAGE_NT_SIGNATURE;
 818 }
 819
 820 /******************************************************************
 821  *              pe_load_builtin_module
 822  *
 823  */
 824 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
 825                                       DWORD64 base, DWORD64 size)
 826 {
 827     struct module*      module = NULL;
 828
 829     if (base && pcs->dbg_hdr_addr)
 830     {
 831         IMAGE_NT_HEADERS    nth;
 832
 833         if (pe_load_nt_header(pcs->handle, base, &nth))
 834         {
 835             if (!size) size = nth.OptionalHeader.SizeOfImage;
 836             module = module_new(pcs, name, DMT_PE, FALSE, base, size,
 837                                 nth.FileHeader.TimeDateStamp,
 838                                 nth.OptionalHeader.CheckSum);
 839         }
 840     }
 841     return module;
 842 }
 843
 844 /***********************************************************************
 845  *           ImageDirectoryEntryToDataEx (DBGHELP.@)
 846  *
 847  * Search for specified directory in PE image
 848  *
 849  * PARAMS
 850  *
 851  *   base    [in]  Image base address
 852  *   image   [in]  TRUE - image has been loaded by loader, FALSE - raw file image
 853  *   dir     [in]  Target directory index
 854  *   size    [out] Receives directory size
 855  *   section [out] Receives pointer to section header of section containing directory data
 856  *
 857  * RETURNS
 858  *   Success: pointer to directory data
 859  *   Failure: NULL
 860  *
 861  */
 862 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
 863 {
 864     const IMAGE_NT_HEADERS *nt;
 865     DWORD addr;
 866
 867     *size = 0;
 868     if (section) *section = NULL;
 869
 870     if (!(nt = RtlImageNtHeader( base ))) return NULL;
 871     if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
 872     if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
 873
 874     *size = nt->OptionalHeader.DataDirectory[dir].Size;
 875     if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
 876
 877     return RtlImageRvaToVa( nt, base, addr, section );
 878 }
 879
 880 /***********************************************************************
 881  *         ImageDirectoryEntryToData   (DBGHELP.@)
 882  *
 883  * NOTES
 884  *   See ImageDirectoryEntryToDataEx
 885  */
 886 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
 887 {
 888     return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
 889 }