2 * File pe_module.c - handle PE module information
4 * Copyright (C) 1996, Eric Youngdale.
5 * Copyright (C) 1999-2000, Ulrich Weigand.
6 * Copyright (C) 2004-2007, Eric Pouech.
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.
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.
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
25 #include "wine/port.h"
32 #include "dbghelp_private.h"
34 #include "wine/debug.h"
36 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
38 /******************************************************************
41 * look for stabs information in PE header (it's how the mingw compiler provides
42 * its debugging information)
44 static BOOL pe_load_stabs(const struct process* pcs, struct module* module,
45 void* mapping, IMAGE_NT_HEADERS* nth)
47 IMAGE_SECTION_HEADER* section;
48 int i, stabsize = 0, stabstrsize = 0;
49 unsigned int stabs = 0, stabstr = 0;
52 section = (IMAGE_SECTION_HEADER*)
53 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
54 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
56 if (!strcasecmp((const char*)section->Name, ".stab"))
58 stabs = section->VirtualAddress;
59 stabsize = section->SizeOfRawData;
61 else if (!strncasecmp((const char*)section->Name, ".stabstr", 8))
63 stabstr = section->VirtualAddress;
64 stabstrsize = section->SizeOfRawData;
68 if (stabstrsize && stabsize)
70 ret = stabs_parse(module,
71 module->module.BaseOfImage - nth->OptionalHeader.ImageBase,
72 RtlImageRvaToVa(nth, mapping, stabs, NULL),
74 RtlImageRvaToVa(nth, mapping, stabstr, NULL),
79 TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
83 /******************************************************************
88 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
89 const char* dbg_name, DWORD timestamp)
92 HANDLE hFile = INVALID_HANDLE_VALUE, hMap = 0;
93 const BYTE* dbg_mapping = NULL;
96 TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
98 if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
99 (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
100 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
101 ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
102 ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
104 const IMAGE_SEPARATE_DEBUG_HEADER* hdr;
105 const IMAGE_SECTION_HEADER* sectp;
106 const IMAGE_DEBUG_DIRECTORY* dbg;
108 hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
109 /* section headers come immediately after debug header */
110 sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
111 /* and after that and the exported names comes the debug directory */
112 dbg = (const IMAGE_DEBUG_DIRECTORY*)
113 (dbg_mapping + sizeof(*hdr) +
114 hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
115 hdr->ExportedNamesSize);
117 ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
118 hdr->NumberOfSections, dbg,
119 hdr->DebugDirectorySize / sizeof(*dbg));
122 ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
124 if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
125 if (hMap) CloseHandle(hMap);
126 if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
130 /******************************************************************
131 * pe_load_msc_debug_info
133 * Process MSC debug information in PE file.
135 static BOOL pe_load_msc_debug_info(const struct process* pcs,
136 struct module* module,
137 void* mapping, IMAGE_NT_HEADERS* nth)
140 const IMAGE_DATA_DIRECTORY* dir;
141 const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
144 /* Read in debug directory */
145 dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
146 nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
147 if (!nDbg) return FALSE;
149 dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
151 /* Parse debug directory */
152 if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
154 /* Debug info is stripped to .DBG file */
155 const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
156 ((const char*)mapping + dbg->PointerToRawData);
158 if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
159 misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
161 WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
162 debugstr_w(module->module.ModuleName));
166 ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
171 const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
172 /* Debug info is embedded into PE module */
173 ret = pe_load_debug_directory(pcs, module, mapping, sectp,
174 nth->FileHeader.NumberOfSections, dbg, nDbg);
180 /***********************************************************************
181 * pe_load_export_debug_info
183 static BOOL pe_load_export_debug_info(const struct process* pcs,
184 struct module* module,
185 void* mapping, IMAGE_NT_HEADERS* nth)
188 const IMAGE_EXPORT_DIRECTORY* exports;
189 DWORD base = module->module.BaseOfImage;
192 if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
195 /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
196 /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
197 symt_new_public(module, NULL, module->module.ModuleName, base, 1,
198 TRUE /* FIXME */, TRUE /* FIXME */);
201 /* Add entry point */
202 symt_new_public(module, NULL, "EntryPoint",
203 base + nth->OptionalHeader.AddressOfEntryPoint, 1,
206 /* FIXME: we'd better store addresses linked to sections rather than
208 IMAGE_SECTION_HEADER* section;
209 /* Add start of sections */
210 section = (IMAGE_SECTION_HEADER*)
211 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
212 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
214 symt_new_public(module, NULL, section->Name,
215 RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL),
216 1, TRUE /* FIXME */, TRUE /* FIXME */);
220 /* Add exported functions */
221 if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
222 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
224 const WORD* ordinals = NULL;
225 const DWORD_PTR* functions = NULL;
226 const DWORD* names = NULL;
230 functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
231 ordinals = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
232 names = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
234 if (functions && ordinals && names)
236 for (i = 0; i < exports->NumberOfNames; i++)
238 if (!names[i]) continue;
239 symt_new_public(module, NULL,
240 RtlImageRvaToVa(nth, mapping, names[i], NULL),
241 base + functions[ordinals[i]],
242 1, TRUE /* FIXME */, TRUE /* FIXME */);
245 for (i = 0; i < exports->NumberOfFunctions; i++)
247 if (!functions[i]) continue;
248 /* Check if we already added it with a name */
249 for (j = 0; j < exports->NumberOfNames; j++)
250 if ((ordinals[j] == i) && names[j]) break;
251 if (j < exports->NumberOfNames) continue;
252 snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
253 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1,
254 TRUE /* FIXME */, TRUE /* FIXME */);
258 /* no real debug info, only entry points */
259 if (module->module.SymType == SymDeferred)
260 module->module.SymType = SymExport;
264 /******************************************************************
268 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
274 IMAGE_NT_HEADERS* nth;
276 hFile = CreateFileW(module->module.LoadedImageName, GENERIC_READ, FILE_SHARE_READ,
277 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
278 if (hFile == INVALID_HANDLE_VALUE) return ret;
279 if ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0)
281 if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
283 nth = RtlImageNtHeader(mapping);
285 if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
287 ret = pe_load_stabs(pcs, module, mapping, nth) ||
288 pe_load_msc_debug_info(pcs, module, mapping, nth);
289 /* if we still have no debug info (we could only get SymExport at this
290 * point), then do the SymExport except if we have an ELF container,
291 * in which case we'll rely on the export's on the ELF side
294 /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module))l */
295 if (pe_load_export_debug_info(pcs, module, mapping, nth) && !ret)
297 UnmapViewOfFile(mapping);
306 /******************************************************************
307 * pe_load_native_module
310 struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
311 HANDLE hFile, DWORD base, DWORD size)
313 struct module* module = NULL;
316 WCHAR loaded_name[MAX_PATH];
318 loaded_name[0] = '\0';
324 if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
328 else if (name) strcpyW(loaded_name, name);
329 else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
330 FIXME("Trouble ahead (no module name passed in deferred mode)\n");
332 if ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != NULL)
336 if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
338 IMAGE_NT_HEADERS* nth = RtlImageNtHeader(mapping);
342 if (!base) base = nth->OptionalHeader.ImageBase;
343 if (!size) size = nth->OptionalHeader.SizeOfImage;
345 module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
346 nth->FileHeader.TimeDateStamp,
347 nth->OptionalHeader.CheckSum);
350 if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
351 module->module.SymType = SymDeferred;
353 pe_load_debug_info(pcs, module);
356 ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
358 UnmapViewOfFile(mapping);
362 if (opened) CloseHandle(hFile);
367 /******************************************************************
371 BOOL pe_load_nt_header(HANDLE hProc, DWORD base, IMAGE_NT_HEADERS* nth)
373 IMAGE_DOS_HEADER dos;
375 return ReadProcessMemory(hProc, (char*)base, &dos, sizeof(dos), NULL) &&
376 dos.e_magic == IMAGE_DOS_SIGNATURE &&
377 ReadProcessMemory(hProc, (char*)(base + dos.e_lfanew),
378 nth, sizeof(*nth), NULL) &&
379 nth->Signature == IMAGE_NT_SIGNATURE;
382 /******************************************************************
383 * pe_load_builtin_module
386 struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
387 DWORD base, DWORD size)
389 struct module* module = NULL;
391 if (base && pcs->dbg_hdr_addr)
393 IMAGE_NT_HEADERS nth;
395 if (pe_load_nt_header(pcs->handle, base, &nth))
397 if (!size) size = nth.OptionalHeader.SizeOfImage;
398 module = module_new(pcs, name, DMT_PE, FALSE, base, size,
399 nth.FileHeader.TimeDateStamp,
400 nth.OptionalHeader.CheckSum);
406 /***********************************************************************
407 * ImageDirectoryEntryToDataEx (DBGHELP.@)
409 * Search for specified directory in PE image
413 * base [in] Image base address
414 * image [in] TRUE - image has been loaded by loader, FALSE - raw file image
415 * dir [in] Target directory index
416 * size [out] Receives directory size
417 * section [out] Receives pointer to section header of section containing directory data
420 * Success: pointer to directory data
424 PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
426 const IMAGE_NT_HEADERS *nt;
430 if (section) *section = NULL;
432 if (!(nt = RtlImageNtHeader( base ))) return NULL;
433 if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
434 if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
436 *size = nt->OptionalHeader.DataDirectory[dir].Size;
437 if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
439 return RtlImageRvaToVa( nt, base, addr, section );
442 /***********************************************************************
443 * ImageDirectoryEntryToData (DBGHELP.@)
446 * See ImageDirectoryEntryToDataEx
448 PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
450 return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );