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, 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
30 #include "dbghelp_private.h"
33 #include "wine/debug.h"
35 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
37 /******************************************************************
40 * look for stabs information in PE header (it's how the mingw compiler provides
41 * its debugging information)
43 static BOOL pe_load_stabs(const struct process* pcs, struct module* module,
44 const void* mapping, IMAGE_NT_HEADERS* nth)
46 IMAGE_SECTION_HEADER* section;
47 int i, stabsize = 0, stabstrsize = 0;
48 unsigned int stabs = 0, stabstr = 0;
51 section = (IMAGE_SECTION_HEADER*)
52 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
53 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
55 if (!strcasecmp((const char*)section->Name, ".stab"))
57 stabs = section->VirtualAddress;
58 stabsize = section->SizeOfRawData;
60 else if (!strncasecmp((const char*)section->Name, ".stabstr", 8))
62 stabstr = section->VirtualAddress;
63 stabstrsize = section->SizeOfRawData;
67 if (stabstrsize && stabsize)
69 ret = stabs_parse(module,
70 module->module.BaseOfImage - nth->OptionalHeader.ImageBase,
71 RtlImageRvaToVa(nth, (void*)mapping, stabs, NULL),
73 RtlImageRvaToVa(nth, (void*)mapping, stabstr, NULL),
79 static BOOL CALLBACK dbg_match(char* file, void* user)
81 /* accept first file */
85 /******************************************************************
90 static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
91 const char* dbg_name, DWORD timestamp)
94 HANDLE hFile = INVALID_HANDLE_VALUE, hMap = 0;
95 const BYTE* dbg_mapping = NULL;
96 const IMAGE_SEPARATE_DEBUG_HEADER* hdr;
97 const IMAGE_DEBUG_DIRECTORY* dbg;
100 WINE_TRACE("Processing DBG file %s\n", dbg_name);
102 if (SymFindFileInPath(pcs->handle, NULL, (char*)dbg_name,
104 tmp, dbg_match, NULL) &&
105 (hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
106 OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
107 ((hMap = CreateFileMappingA(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
108 ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
110 hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
111 if (hdr->TimeDateStamp != timestamp)
113 WINE_ERR("Warning - %s has incorrect internal timestamp\n",
116 * Well, sometimes this happens to DBG files which ARE REALLY the
117 * right .DBG files but nonetheless this check fails. Anyway,
118 * WINDBG (debugger for Windows by Microsoft) loads debug symbols
119 * which have incorrect timestamps.
122 if (hdr->Signature == IMAGE_SEPARATE_DEBUG_SIGNATURE)
124 /* section headers come immediately after debug header */
125 const IMAGE_SECTION_HEADER *sectp =
126 (const IMAGE_SECTION_HEADER*)(hdr + 1);
127 /* and after that and the exported names comes the debug directory */
128 dbg = (const IMAGE_DEBUG_DIRECTORY*)
129 (dbg_mapping + sizeof(*hdr) +
130 hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
131 hdr->ExportedNamesSize);
134 ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
135 hdr->NumberOfSections, dbg,
136 hdr->DebugDirectorySize / sizeof(*dbg));
139 ERR("Wrong signature in .DBG file %s\n", debugstr_a(tmp));
142 WINE_ERR("-Unable to peruse .DBG file %s (%s)\n", dbg_name, debugstr_a(tmp));
144 if (dbg_mapping) UnmapViewOfFile((void*)dbg_mapping);
145 if (hMap) CloseHandle(hMap);
146 if (hFile != NULL) CloseHandle(hFile);
150 /******************************************************************
151 * pe_load_msc_debug_info
153 * Process MSC debug information in PE file.
155 static BOOL pe_load_msc_debug_info(const struct process* pcs,
156 struct module* module,
157 const void* mapping, IMAGE_NT_HEADERS* nth)
160 const IMAGE_DATA_DIRECTORY* dir;
161 const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
164 /* Read in debug directory */
165 dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
166 nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
167 if (!nDbg) return FALSE;
169 dbg = RtlImageRvaToVa(nth, (void*)mapping, dir->VirtualAddress, NULL);
171 /* Parse debug directory */
172 if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
174 /* Debug info is stripped to .DBG file */
175 const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
176 ((const char*)mapping + dbg->PointerToRawData);
178 if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
179 misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
181 WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
182 module->module.ModuleName);
186 ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
191 const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
192 /* Debug info is embedded into PE module */
193 ret = pe_load_debug_directory(pcs, module, mapping, sectp,
194 nth->FileHeader.NumberOfSections, dbg, nDbg);
200 /***********************************************************************
201 * pe_load_export_debug_info
203 static BOOL pe_load_export_debug_info(const struct process* pcs,
204 struct module* module,
205 const void* mapping, IMAGE_NT_HEADERS* nth)
208 const IMAGE_EXPORT_DIRECTORY* exports;
209 DWORD base = module->module.BaseOfImage;
212 if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
215 /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
216 /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
217 symt_new_public(module, NULL, module->module.ModuleName, base, 0,
218 TRUE /* FIXME */, TRUE /* FIXME */);
221 /* Add entry point */
222 symt_new_public(module, NULL, "EntryPoint",
223 base + nth->OptionalHeader.AddressOfEntryPoint, 0,
226 /* FIXME: we'd better store addresses linked to sections rather than
228 IMAGE_SECTION_HEADER* section;
229 /* Add start of sections */
230 section = (IMAGE_SECTION_HEADER*)
231 ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
232 for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
234 symt_new_public(module, NULL, section->Name,
235 RtlImageRvaToVa(nth, (void*)mapping, section->VirtualAddress, NULL),
236 0, TRUE /* FIXME */, TRUE /* FIXME */);
240 /* Add exported functions */
241 if ((exports = RtlImageDirectoryEntryToData((void*)mapping, FALSE,
242 IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
244 const WORD* ordinals = NULL;
245 const DWORD_PTR* functions = NULL;
246 const DWORD* names = NULL;
250 functions = RtlImageRvaToVa(nth, (void*)mapping, exports->AddressOfFunctions, NULL);
251 ordinals = RtlImageRvaToVa(nth, (void*)mapping, exports->AddressOfNameOrdinals, NULL);
252 names = RtlImageRvaToVa(nth, (void*)mapping, exports->AddressOfNames, NULL);
254 for (i = 0; i < exports->NumberOfNames; i++)
256 if (!names[i]) continue;
257 symt_new_public(module, NULL,
258 RtlImageRvaToVa(nth, (void*)mapping, names[i], NULL),
259 base + functions[ordinals[i]],
260 0, TRUE /* FIXME */, TRUE /* FIXME */);
263 for (i = 0; i < exports->NumberOfFunctions; i++)
265 if (!functions[i]) continue;
266 /* Check if we already added it with a name */
267 for (j = 0; j < exports->NumberOfNames; j++)
268 if ((ordinals[j] == i) && names[j]) break;
269 if (j < exports->NumberOfNames) continue;
270 snprintf(buffer, sizeof(buffer), "%ld", i + exports->Base);
271 symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 0,
272 TRUE /* FIXME */, TRUE /* FIXME */);
275 /* no real debug info, only entry points */
276 if (module->module.SymType == SymDeferred)
277 module->module.SymType = SymExport;
281 /******************************************************************
285 BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
291 IMAGE_NT_HEADERS* nth;
293 hFile = CreateFileA(module->module.LoadedImageName, GENERIC_READ, FILE_SHARE_READ,
294 NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
295 if (hFile == INVALID_HANDLE_VALUE) return ret;
296 if ((hMap = CreateFileMappingA(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0)
298 if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
300 nth = RtlImageNtHeader(mapping);
302 if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
304 ret = pe_load_stabs(pcs, module, mapping, nth) ||
305 pe_load_msc_debug_info(pcs, module, mapping, nth);
306 /* if we still have no debug info (we could only get SymExport at this
307 * point), then do the SymExport except if we have an ELF container,
308 * in which case we'll rely on the export's on the ELF side
311 /* FIXME shouldn't we check that? if (!module_get_debug(pcs, module))l */
312 if (pe_load_export_debug_info(pcs, module, mapping, nth) && !ret)
314 UnmapViewOfFile(mapping);
323 /******************************************************************
327 struct module* pe_load_module(struct process* pcs, char* name,
328 HANDLE hFile, DWORD base, DWORD size)
330 struct module* module = NULL;
334 char loaded_name[MAX_PATH];
336 loaded_name[0] = '\0';
341 /* FIXME SetLastError */
344 if ((hFile = FindExecutableImage(name, pcs->search_path, loaded_name)) == NULL)
348 else if (name) strcpy(loaded_name, name);
349 else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
350 FIXME("Trouble ahead (no module name passed in deferred mode)\n");
351 if (!(module = module_find_by_name(pcs, loaded_name, DMT_PE)) &&
352 (hMap = CreateFileMappingA(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != NULL)
354 if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
356 IMAGE_NT_HEADERS* nth = RtlImageNtHeader(mapping);
360 if (!base) base = nth->OptionalHeader.ImageBase;
361 if (!size) size = nth->OptionalHeader.SizeOfImage;
363 module = module_new(pcs, loaded_name, DMT_PE, base, size,
364 nth->FileHeader.TimeDateStamp,
365 nth->OptionalHeader.CheckSum);
368 if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
369 module->module.SymType = SymDeferred;
371 pe_load_debug_info(pcs, module);
374 UnmapViewOfFile(mapping);
378 if (opened) CloseHandle(hFile);
383 /******************************************************************
387 BOOL pe_load_nt_header(HANDLE hProc, DWORD base, IMAGE_NT_HEADERS* nth)
389 IMAGE_DOS_HEADER dos;
391 return ReadProcessMemory(hProc, (char*)base, &dos, sizeof(dos), NULL) &&
392 dos.e_magic == IMAGE_DOS_SIGNATURE &&
393 ReadProcessMemory(hProc, (char*)(base + dos.e_lfanew),
394 nth, sizeof(*nth), NULL) &&
395 nth->Signature == IMAGE_NT_SIGNATURE;
398 /******************************************************************
399 * pe_load_module_from_pcs
402 struct module* pe_load_module_from_pcs(struct process* pcs, const char* name,
403 const char* mod_name, DWORD base, DWORD size)
405 struct module* module;
408 if ((module = module_find_by_name(pcs, name, DMT_PE))) return module;
409 if (mod_name) ptr = mod_name;
412 for (ptr = name + strlen(name) - 1; ptr >= name; ptr--)
414 if (*ptr == '/' || *ptr == '\\')
421 if (ptr && (module = module_find_by_name(pcs, ptr, DMT_PE))) return module;
424 if (pcs->dbg_hdr_addr)
426 IMAGE_NT_HEADERS nth;
428 if (pe_load_nt_header(pcs->handle, base, &nth))
430 if (!size) size = nth.OptionalHeader.SizeOfImage;
431 module = module_new(pcs, name, DMT_PE, base, size,
432 nth.FileHeader.TimeDateStamp, nth.OptionalHeader.CheckSum);
435 module = module_new(pcs, name, DMT_PE, base, size, 0 /* FIXME */, 0 /* FIXME */);