4b9eac4f0321c4ed759a7d5b6ebe7e0702f7cdf4
[reactos.git] / 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 static void pe_module_remove(struct process* pcs, struct module_format* modfmt)
328 {
329 pe_unmap_file(&modfmt->u.pe_info->fmap);
330 HeapFree(GetProcessHeap(), 0, modfmt);
331 }
332
333 /******************************************************************
334 * pe_locate_with_coff_symbol_table
335 *
336 * Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
337 * of global symbols.
338 * Mingw32 requires this for stabs debug information as address for global variables isn't filled in
339 * (this is similar to what is done in elf_module.c when using the .symtab ELF section)
340 */
341 static BOOL pe_locate_with_coff_symbol_table(struct module* module)
342 {
343 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
344 const IMAGE_SYMBOL* isym;
345 int i, numsym, naux;
346 char tmp[9];
347 const char* name;
348 struct hash_table_iter hti;
349 void* ptr;
350 struct symt_data* sym;
351 const char* mapping;
352
353 numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
354 if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
355 return TRUE;
356 if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
357 isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
358
359 for (i = 0; i < numsym; i+= naux, isym += naux)
360 {
361 if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
362 isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
363 {
364 if (isym->N.Name.Short)
365 {
366 name = memcpy(tmp, isym->N.ShortName, 8);
367 tmp[8] = '\0';
368 }
369 else name = fmap->u.pe.strtable + isym->N.Name.Long;
370 if (name[0] == '_') name++;
371 hash_table_iter_init(&module->ht_symbols, &hti, name);
372 while ((ptr = hash_table_iter_up(&hti)))
373 {
374 sym = CONTAINING_RECORD(ptr, struct symt_data, hash_elt);
375 if (sym->symt.tag == SymTagData &&
376 (sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
377 sym->u.var.kind == loc_absolute &&
378 !strcmp(sym->hash_elt.name, name))
379 {
380 TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
381 isym->SectionNumber, name, sym->u.var.offset,
382 wine_dbgstr_longlong(module->module.BaseOfImage +
383 fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
384 isym->Value));
385 sym->u.var.offset = module->module.BaseOfImage +
386 fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
387 break;
388 }
389 }
390 }
391 naux = isym->NumberOfAuxSymbols + 1;
392 }
393 pe_unmap_full(fmap);
394 return TRUE;
395 }
396
397 /******************************************************************
398 * pe_load_coff_symbol_table
399 *
400 * Load public symbols out of the COFF symbol table (if any).
401 */
402 static BOOL pe_load_coff_symbol_table(struct module* module)
403 {
404 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
405 const IMAGE_SYMBOL* isym;
406 int i, numsym, naux;
407 const char* strtable;
408 char tmp[9];
409 const char* name;
410 const char* lastfilename = NULL;
411 struct symt_compiland* compiland = NULL;
412 const IMAGE_SECTION_HEADER* sect;
413 const char* mapping;
414
415 numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
416 if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
417 return TRUE;
418 if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
419 isym = (const IMAGE_SYMBOL*)((const char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
420 /* FIXME: no way to get strtable size */
421 strtable = (const char*)&isym[numsym];
422 sect = IMAGE_FIRST_SECTION(RtlImageNtHeader((HMODULE)mapping));
423
424 for (i = 0; i < numsym; i+= naux, isym += naux)
425 {
426 if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
427 {
428 lastfilename = (const char*)(isym + 1);
429 compiland = NULL;
430 }
431 if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
432 isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
433 {
434 if (isym->N.Name.Short)
435 {
436 name = memcpy(tmp, isym->N.ShortName, 8);
437 tmp[8] = '\0';
438 }
439 else name = strtable + isym->N.Name.Long;
440 if (name[0] == '_') name++;
441
442 if (!compiland && lastfilename)
443 compiland = symt_new_compiland(module, 0,
444 source_new(module, NULL, lastfilename));
445
446 if (!(dbghelp_options & SYMOPT_NO_PUBLICS))
447 symt_new_public(module, compiland, name,
448 module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress +
449 isym->Value,
450 1);
451 }
452 naux = isym->NumberOfAuxSymbols + 1;
453 }
454 module->module.SymType = SymCoff;
455 module->module.LineNumbers = FALSE;
456 module->module.GlobalSymbols = FALSE;
457 module->module.TypeInfo = FALSE;
458 module->module.SourceIndexed = FALSE;
459 module->module.Publics = TRUE;
460 pe_unmap_full(fmap);
461
462 return TRUE;
463 }
464
465 /******************************************************************
466 * pe_load_stabs
467 *
468 * look for stabs information in PE header (it's how the mingw compiler provides
469 * its debugging information)
470 */
471 static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
472 {
473 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
474 struct image_section_map sect_stabs, sect_stabstr;
475 BOOL ret = FALSE;
476
477 if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
478 {
479 const char* stab;
480 const char* stabstr;
481
482 stab = image_map_section(&sect_stabs);
483 stabstr = image_map_section(&sect_stabstr);
484 if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
485 {
486 ret = stabs_parse(module,
487 module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
488 stab, image_get_map_size(&sect_stabs),
489 stabstr, image_get_map_size(&sect_stabstr),
490 NULL, NULL);
491 }
492 image_unmap_section(&sect_stabs);
493 image_unmap_section(&sect_stabstr);
494 if (ret) pe_locate_with_coff_symbol_table(module);
495 }
496 TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
497
498 return ret;
499 }
500
501 /******************************************************************
502 * pe_load_dwarf
503 *
504 * look for dwarf information in PE header (it's also a way for the mingw compiler
505 * to provide its debugging information)
506 */
507 static BOOL pe_load_dwarf(struct module* module)
508 {
509 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
510 BOOL ret;
511
512 ret = dwarf2_parse(module,
513 module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
514 NULL, /* FIXME: some thunks to deal with ? */
515 fmap);
516 TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
517
518 return ret;
519 }
520
521 #ifndef DBGHELP_STATIC_LIB
522 /******************************************************************
523 * pe_load_rsym
524 *
525 * look for ReactOS's own rsym format
526 */
527 static BOOL pe_load_rsym(struct module* module)
528 {
529 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
530 struct image_section_map sect_rsym;
531 BOOL ret = FALSE;
532
533 if (pe_find_section(fmap, ".rossym", &sect_rsym))
534 {
535 const char* rsym = image_map_section(&sect_rsym);
536 if (rsym != IMAGE_NO_MAP)
537 {
538 ret = rsym_parse(module, module->module.BaseOfImage,
539 rsym, image_get_map_size(&sect_rsym));
540 }
541 image_unmap_section(&sect_rsym);
542 }
543 TRACE("%s the RSYM debug info\n", ret ? "successfully loaded" : "failed to load");
544
545 return ret;
546 }
547
548 /******************************************************************
549 * pe_load_dbg_file
550 *
551 * loads a .dbg file
552 */
553 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
554 const char* dbg_name, DWORD timestamp)
555 {
556 char tmp[MAX_PATH];
557 HANDLE hFile = INVALID_HANDLE_VALUE, hMap = 0;
558 const BYTE* dbg_mapping = NULL;
559 BOOL ret = FALSE;
560
561 TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
562
563 if (path_find_symbol_file(pcs, module, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
564 (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
565 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
566 ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
567 ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
568 {
569 const IMAGE_SEPARATE_DEBUG_HEADER* hdr;
570 const IMAGE_SECTION_HEADER* sectp;
571 const IMAGE_DEBUG_DIRECTORY* dbg;
572
573 hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
574 /* section headers come immediately after debug header */
575 sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
576 /* and after that and the exported names comes the debug directory */
577 dbg = (const IMAGE_DEBUG_DIRECTORY*)
578 (dbg_mapping + sizeof(*hdr) +
579 hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
580 hdr->ExportedNamesSize);
581
582 ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
583 hdr->NumberOfSections, dbg,
584 hdr->DebugDirectorySize / sizeof(*dbg));
585 }
586 else
587 ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
588
589 if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
590 if (hMap) CloseHandle(hMap);
591 if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
592 return ret;
593 }
594
595 /******************************************************************
596 * pe_load_msc_debug_info
597 *
598 * Process MSC debug information in PE file.
599 */
600 static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module)
601 {
602 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
603 BOOL ret = FALSE;
604 const IMAGE_DATA_DIRECTORY* dir;
605 const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
606 int nDbg;
607 void* mapping;
608 IMAGE_NT_HEADERS* nth;
609
610 if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
611 /* Read in debug directory */
612 dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
613 nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
614 if (!nDbg) goto done;
615
616 dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
617
618 #ifdef __REACTOS__
619 if (!dbg)
620 {
621 ERR("Debug directory not found in module %s\n",
622 debugstr_w(module->module.ModuleName));
623 goto done;
624 }
625 #endif
626
627 /* Parse debug directory */
628 if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
629 {
630 /* Debug info is stripped to .DBG file */
631 const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
632 ((const char*)mapping + dbg->PointerToRawData);
633
634 if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
635 misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
636 {
637 ERR("-Debug info stripped, but no .DBG file in module %s\n",
638 debugstr_w(module->module.ModuleName));
639 }
640 else
641 {
642 ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
643 }
644 }
645 else
646 {
647 const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
648 /* Debug info is embedded into PE module */
649 ret = pe_load_debug_directory(pcs, module, mapping, sectp,
650 nth->FileHeader.NumberOfSections, dbg, nDbg);
651 }
652 done:
653 pe_unmap_full(fmap);
654 return ret;
655 }
656 #endif /* DBGHELP_STATIC_LIB */
657
658 /***********************************************************************
659 * pe_load_export_debug_info
660 */
661 static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module)
662 {
663 struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
664 unsigned int i;
665 const IMAGE_EXPORT_DIRECTORY* exports;
666 DWORD base = module->module.BaseOfImage;
667 DWORD size;
668 IMAGE_NT_HEADERS* nth;
669 void* mapping;
670
671 if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
672
673 if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
674 #if 0
675 /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
676 /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
677 symt_new_public(module, NULL, module->module.ModuleName, base, 1);
678 #endif
679
680 /* Add entry point */
681 symt_new_public(module, NULL, "EntryPoint",
682 base + nth->OptionalHeader.AddressOfEntryPoint, 1);
683 #if 0
684 /* FIXME: we'd better store addresses linked to sections rather than
685 absolute values */
686 IMAGE_SECTION_HEADER* section;
687 /* Add start of sections */
688 section = (IMAGE_SECTION_HEADER*)
689 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
690 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
691 {
692 symt_new_public(module, NULL, section->Name,
693 RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
694 }
695 #endif
696
697 /* Add exported functions */
698 if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
699 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
700 {
701 const WORD* ordinals = NULL;
702 const DWORD_PTR* functions = NULL;
703 const DWORD* names = NULL;
704 unsigned int j;
705 char buffer[16];
706
707 functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
708 ordinals = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
709 names = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
710
711 if (functions && ordinals && names)
712 {
713 for (i = 0; i < exports->NumberOfNames; i++)
714 {
715 if (!names[i]) continue;
716 symt_new_public(module, NULL,
717 RtlImageRvaToVa(nth, mapping, names[i], NULL),
718 base + functions[ordinals[i]], 1);
719 }
720
721 for (i = 0; i < exports->NumberOfFunctions; i++)
722 {
723 if (!functions[i]) continue;
724 /* Check if we already added it with a name */
725 for (j = 0; j < exports->NumberOfNames; j++)
726 if ((ordinals[j] == i) && names[j]) break;
727 if (j < exports->NumberOfNames) continue;
728 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
729 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1);
730 }
731 }
732 }
733 /* no real debug info, only entry points */
734 if (module->module.SymType == SymDeferred)
735 module->module.SymType = SymExport;
736 pe_unmap_full(fmap);
737
738 return TRUE;
739 }
740
741 /******************************************************************
742 * pe_load_debug_info
743 *
744 */
745 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
746 {
747 BOOL ret = FALSE;
748
749 if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
750 {
751 ret = pe_load_stabs(pcs, module);
752 ret = pe_load_dwarf(module) || ret;
753 #ifndef DBGHELP_STATIC_LIB
754 ret = pe_load_msc_debug_info(pcs, module) || ret;
755 ret = pe_load_rsym(module) || ret;
756 #endif
757
758 ret = ret || pe_load_coff_symbol_table(module); /* FIXME */
759 /* if we still have no debug info (we could only get SymExport at this
760 * point), then do the SymExport except if we have an ELF container,
761 * in which case we'll rely on the export's on the ELF side
762 */
763 }
764 /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */
765 if (pe_load_export_debug_info(pcs, module) && !ret)
766 ret = TRUE;
767
768 return ret;
769 }
770
771 /******************************************************************
772 * pe_load_native_module
773 *
774 */
775 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
776 HANDLE hFile, DWORD64 base, DWORD size)
777 {
778 struct module* module = NULL;
779 BOOL opened = FALSE;
780 struct module_format* modfmt;
781 WCHAR loaded_name[MAX_PATH];
782
783 loaded_name[0] = '\0';
784 if (!hFile)
785 {
786 assert(name);
787
788 if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
789 return NULL;
790 opened = TRUE;
791 }
792 else if (name) strcpyW(loaded_name, name);
793 else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
794 FIXME("Trouble ahead (no module name passed in deferred mode)\n");
795 if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info))))
796 return NULL;
797 modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1);
798 if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE))
799 {
800 if (!base) base = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
801 if (!size) size = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
802
803 module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
804 modfmt->u.pe_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
805 modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum);
806 if (module)
807 {
808 modfmt->module = module;
809 modfmt->remove = pe_module_remove;
810 modfmt->loc_compute = NULL;
811
812 module->format_info[DFI_PE] = modfmt;
813 if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
814 module->module.SymType = SymDeferred;
815 else
816 pe_load_debug_info(pcs, module);
817 module->reloc_delta = base - modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
818 }
819 else
820 {
821 ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
822 pe_unmap_file(&modfmt->u.pe_info->fmap);
823 }
824 }
825 if (!module) HeapFree(GetProcessHeap(), 0, modfmt);
826
827 if (opened) CloseHandle(hFile);
828
829 return module;
830 }
831
832 /******************************************************************
833 * pe_load_nt_header
834 *
835 */
836 BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
837 {
838 IMAGE_DOS_HEADER dos;
839
840 return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
841 dos.e_magic == IMAGE_DOS_SIGNATURE &&
842 ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
843 nth, sizeof(*nth), NULL) &&
844 nth->Signature == IMAGE_NT_SIGNATURE;
845 }
846
847 /******************************************************************
848 * pe_load_builtin_module
849 *
850 */
851 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
852 DWORD64 base, DWORD64 size)
853 {
854 struct module* module = NULL;
855
856 if (base && pcs->dbg_hdr_addr)
857 {
858 IMAGE_NT_HEADERS nth;
859
860 if (pe_load_nt_header(pcs->handle, base, &nth))
861 {
862 if (!size) size = nth.OptionalHeader.SizeOfImage;
863 module = module_new(pcs, name, DMT_PE, FALSE, base, size,
864 nth.FileHeader.TimeDateStamp,
865 nth.OptionalHeader.CheckSum);
866 }
867 }
868 return module;
869 }
870
871 /***********************************************************************
872 * ImageDirectoryEntryToDataEx (DBGHELP.@)
873 *
874 * Search for specified directory in PE image
875 *
876 * PARAMS
877 *
878 * base [in] Image base address
879 * image [in] TRUE - image has been loaded by loader, FALSE - raw file image
880 * dir [in] Target directory index
881 * size [out] Receives directory size
882 * section [out] Receives pointer to section header of section containing directory data
883 *
884 * RETURNS
885 * Success: pointer to directory data
886 * Failure: NULL
887 *
888 */
889 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
890 {
891 const IMAGE_NT_HEADERS *nt;
892 DWORD addr;
893
894 *size = 0;
895 if (section) *section = NULL;
896
897 if (!(nt = RtlImageNtHeader( base ))) return NULL;
898 if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
899 if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
900
901 *size = nt->OptionalHeader.DataDirectory[dir].Size;
902 if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
903
904 return RtlImageRvaToVa( nt, base, addr, section );
905 }
906
907 /***********************************************************************
908 * ImageDirectoryEntryToData (DBGHELP.@)
909 *
910 * NOTES
911 * See ImageDirectoryEntryToDataEx
912 */
913 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
914 {
915 return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
916 }