| /* |
| * File pe_module.c - handle PE module information |
| * |
| * Copyright (C) 1996, Eric Youngdale. |
| * Copyright (C) 1999-2000, Ulrich Weigand. |
| * Copyright (C) 2004, Eric Pouech. |
| * |
| * This library is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU Lesser General Public |
| * License as published by the Free Software Foundation; either |
| * version 2.1 of the License, or (at your option) any later version. |
| * |
| * This library is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * Lesser General Public License for more details. |
| * |
| * You should have received a copy of the GNU Lesser General Public |
| * License along with this library; if not, write to the Free Software |
| * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| * |
| */ |
| |
| #include "config.h" |
| #include <stdlib.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include <assert.h> |
| |
| #include "dbghelp_private.h" |
| #include "winreg.h" |
| #include "winternl.h" |
| #include "wine/debug.h" |
| |
| WINE_DEFAULT_DEBUG_CHANNEL(dbghelp); |
| |
| /****************************************************************** |
| * pe_load_stabs |
| * |
| * look for stabs information in PE header (it's how the mingw compiler provides |
| * its debugging information) |
| */ |
| static SYM_TYPE pe_load_stabs(const struct process* pcs, struct module* module, |
| const void* mapping, IMAGE_NT_HEADERS* nth) |
| { |
| IMAGE_SECTION_HEADER* section; |
| int i, stabsize = 0, stabstrsize = 0; |
| unsigned int stabs = 0, stabstr = 0; |
| SYM_TYPE sym_type = SymNone; |
| |
| section = (IMAGE_SECTION_HEADER*) |
| ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader); |
| for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++) |
| { |
| if (!strcasecmp(section->Name, ".stab")) |
| { |
| stabs = section->VirtualAddress; |
| stabsize = section->SizeOfRawData; |
| } |
| else if (!strncasecmp(section->Name, ".stabstr", 8)) |
| { |
| stabstr = section->VirtualAddress; |
| stabstrsize = section->SizeOfRawData; |
| } |
| } |
| |
| if (stabstrsize && stabsize) |
| { |
| sym_type = stabs_parse(module, mapping, module->module.BaseOfImage, |
| stabs, stabsize, stabstr, stabstrsize); |
| } |
| return sym_type; |
| } |
| |
| /****************************************************************** |
| * pe_load_dbg_file |
| * |
| * loads a .dbg file |
| */ |
| static SYM_TYPE pe_load_dbg_file(const struct process* pcs, struct module* module, |
| char* dbg_name, DWORD timestamp) |
| { |
| char tmp[MAX_PATH]; |
| HANDLE hFile, hMap = 0; |
| const BYTE* dbg_mapping = NULL; |
| PIMAGE_SEPARATE_DEBUG_HEADER hdr; |
| PIMAGE_DEBUG_DIRECTORY dbg; |
| SYM_TYPE sym_type = -1; |
| |
| WINE_TRACE("Processing DBG file %s\n", dbg_name); |
| |
| if ((hFile = FindDebugInfoFile(dbg_name, pcs->search_path, tmp)) != NULL && |
| ((hMap = CreateFileMappingA(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) && |
| ((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)) |
| { |
| hdr = (PIMAGE_SEPARATE_DEBUG_HEADER)dbg_mapping; |
| if (hdr->TimeDateStamp != timestamp) |
| { |
| WINE_ERR("Warning - %s has incorrect internal timestamp\n", |
| dbg_name); |
| /* |
| * Well, sometimes this happens to DBG files which ARE REALLY the |
| * right .DBG files but nonetheless this check fails. Anyway, |
| * WINDBG (debugger for Windows by Microsoft) loads debug symbols |
| * which have incorrect timestamps. |
| */ |
| } |
| dbg = (PIMAGE_DEBUG_DIRECTORY) |
| (dbg_mapping + sizeof(*hdr) + |
| hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) + |
| hdr->ExportedNamesSize); |
| |
| sym_type = pe_load_debug_directory(pcs, module, dbg_mapping, dbg, |
| hdr->DebugDirectorySize / sizeof(*dbg)); |
| } |
| else |
| { |
| WINE_ERR("-Unable to peruse .DBG file %s (%s)\n", |
| dbg_name, debugstr_a(tmp)); |
| } |
| if (dbg_mapping) UnmapViewOfFile((void*)dbg_mapping); |
| if (hMap) CloseHandle(hMap); |
| if (hFile != NULL) CloseHandle(hFile); |
| return sym_type; |
| } |
| |
| /****************************************************************** |
| * pe_load_msc_debug_info |
| * |
| * Process MSC debug information in PE file. |
| */ |
| static SYM_TYPE pe_load_msc_debug_info(const struct process* pcs, |
| struct module* module, |
| const void* mapping, IMAGE_NT_HEADERS* nth) |
| { |
| SYM_TYPE sym_type = -1; |
| PIMAGE_DATA_DIRECTORY dir; |
| PIMAGE_DEBUG_DIRECTORY dbg = NULL; |
| int nDbg; |
| |
| /* Read in debug directory */ |
| dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG; |
| nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY); |
| if (!nDbg) return sym_type; |
| |
| dbg = (PIMAGE_DEBUG_DIRECTORY)((char*)mapping + dir->VirtualAddress); |
| |
| /* Parse debug directory */ |
| if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED) |
| { |
| /* Debug info is stripped to .DBG file */ |
| PIMAGE_DEBUG_MISC misc = (PIMAGE_DEBUG_MISC) |
| ((char*)mapping + dbg->PointerToRawData); |
| |
| if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC || |
| misc->DataType != IMAGE_DEBUG_MISC_EXENAME) |
| { |
| WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n", |
| module->module.ModuleName); |
| } |
| else |
| { |
| sym_type = pe_load_dbg_file(pcs, module, misc->Data, nth->FileHeader.TimeDateStamp); |
| } |
| } |
| else |
| { |
| /* Debug info is embedded into PE module */ |
| sym_type = pe_load_debug_directory(pcs, module, mapping, dbg, nDbg); |
| } |
| |
| return sym_type; |
| } |
| |
| /*********************************************************************** |
| * pe_load_export_debug_info |
| */ |
| static SYM_TYPE pe_load_export_debug_info(const struct process* pcs, |
| struct module* module, |
| const void* mapping, IMAGE_NT_HEADERS* nth) |
| { |
| char buffer[512]; |
| unsigned int i; |
| IMAGE_DATA_DIRECTORY* dir; |
| DWORD base = module->module.BaseOfImage; |
| ADDRESS addr; |
| |
| addr.Mode = AddrModeFlat; |
| addr.Segment = 0; |
| |
| #if 0 |
| /* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */ |
| /* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */ |
| symt_new_public(module, NULL, module->module.ModuleName, base, 0, |
| TRUE /* FIXME */, TRUE /* FIXME */); |
| #endif |
| |
| /* Add entry point */ |
| snprintf(buffer, sizeof(buffer), "%s.EntryPoint", module->module.ModuleName); |
| symt_new_public(module, NULL, buffer, |
| base + nth->OptionalHeader.AddressOfEntryPoint, 0, |
| TRUE /* FIXME */, TRUE /* FIXME */); |
| |
| #if 0 |
| IMAGE_SECTION_HEADER* section; |
| /* Add start of sections */ |
| section = (IMAGE_SECTION_HEADER*) |
| ((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader); |
| for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++) |
| { |
| snprintf(buffer, sizeof(buffer), "%s.%s", |
| module->module.ModuleName, section->Name); |
| symt_new_public(module, NULL, buffer, base + section->VirtualAddress, 0, |
| TRUE /* FIXME */, TRUE /* FIXME */); |
| } |
| #endif |
| |
| /* Add exported functions */ |
| if ((dir = RtlImageDirectoryEntryToData((void*)mapping, TRUE, |
| IMAGE_DIRECTORY_ENTRY_EXPORT, NULL))) |
| { |
| IMAGE_EXPORT_DIRECTORY* exports; |
| WORD* ordinals = NULL; |
| void** functions = NULL; |
| DWORD* names = NULL; |
| unsigned int j; |
| |
| exports = (void*)((char*)mapping + dir->VirtualAddress); |
| functions = (void*)((char*)mapping + exports->AddressOfFunctions); |
| ordinals = (void*)((char*)mapping + exports->AddressOfNameOrdinals); |
| names = (void*)((char*)mapping + exports->AddressOfNames); |
| |
| for (i = 0; i < exports->NumberOfNames; i++) |
| { |
| if (!names[i]) continue; |
| snprintf(buffer, sizeof(buffer), "%s.%s", |
| module->module.ModuleName, (char*)base + names[i]); |
| symt_new_public(module, NULL, buffer, |
| base + (DWORD)functions[ordinals[i]], 0, |
| TRUE /* FIXME */, TRUE /* FIXME */); |
| } |
| |
| for (i = 0; i < exports->NumberOfFunctions; i++) |
| { |
| if (!functions[i]) continue; |
| /* Check if we already added it with a name */ |
| for (j = 0; j < exports->NumberOfNames; j++) |
| if ((ordinals[j] == i) && names[j]) break; |
| if (j < exports->NumberOfNames) continue; |
| snprintf(buffer, sizeof(buffer), "%s.%ld", |
| module->module.ModuleName, i + exports->Base); |
| symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 0, |
| TRUE /* FIXME */, TRUE /* FIXME */); |
| } |
| } |
| /* no real debug info, only entry points */ |
| return module->module.SymType = SymExport; |
| } |
| |
| /****************************************************************** |
| * pe_load_debug_info |
| * |
| */ |
| SYM_TYPE pe_load_debug_info(const struct process* pcs, struct module* module) |
| { |
| SYM_TYPE sym_type = -1; |
| HANDLE hFile; |
| HANDLE hMap; |
| void* mapping; |
| IMAGE_NT_HEADERS* nth; |
| |
| hFile = CreateFileA(module->module.LoadedImageName, GENERIC_READ, FILE_SHARE_READ, |
| NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| if (hFile == INVALID_HANDLE_VALUE) return -1; |
| if ((hMap = CreateFileMappingA(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) |
| { |
| if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL) |
| { |
| nth = RtlImageNtHeader(mapping); |
| |
| if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY)) |
| { |
| sym_type = pe_load_stabs(pcs, module, mapping, nth); |
| if (sym_type <= SymNone) |
| sym_type = pe_load_msc_debug_info(pcs, module, mapping, nth); |
| /* if we still have no debug info (we could only get SymExport at this |
| * point), then do the SymExport except if we have an ELF container, |
| * in which case we'll rely on the export's on the ELF side |
| */ |
| } |
| if (sym_type <= SymNone && !module_get_debug(pcs, module)) |
| sym_type = pe_load_export_debug_info(pcs, module, mapping, nth); |
| UnmapViewOfFile(mapping); |
| } |
| CloseHandle(hMap); |
| } |
| CloseHandle(hFile); |
| |
| module->module.SymType = (sym_type >= SymNone) ? sym_type : SymNone; |
| return sym_type; |
| } |
| |
| /****************************************************************** |
| * pe_load_module |
| * |
| */ |
| struct module* pe_load_module(struct process* pcs, char* name, |
| HANDLE hFile, DWORD base, DWORD size) |
| { |
| struct module* module = NULL; |
| BOOL opened = FALSE; |
| HANDLE hMap; |
| void* mapping; |
| char loaded_name[MAX_PATH]; |
| |
| loaded_name[0] = '\0'; |
| if (!hFile) |
| { |
| if (!name) |
| { |
| /* FIXME SetLastError */ |
| return NULL; |
| } |
| if ((hFile = FindExecutableImage(name, NULL, loaded_name)) == NULL) |
| return NULL; |
| opened = TRUE; |
| } |
| else if (name) strcpy(loaded_name, name); |
| else if (dbghelp_options & SYMOPT_DEFERRED_LOADS) |
| FIXME("Trouble ahead (no module name passed in deferred mode)\n"); |
| if ((hMap = CreateFileMappingA(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) |
| { |
| if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL) |
| { |
| IMAGE_NT_HEADERS* nth = RtlImageNtHeader(mapping); |
| |
| if (nth) |
| { |
| if (!base) base = nth->OptionalHeader.ImageBase; |
| if (!size) size = nth->OptionalHeader.SizeOfImage; |
| |
| module = module_new(pcs, loaded_name, DMT_PE, base, size, |
| nth->FileHeader.TimeDateStamp, |
| nth->OptionalHeader.CheckSum); |
| if (module) |
| { |
| module->module.SymType = (dbghelp_options & SYMOPT_DEFERRED_LOADS) ? |
| SymDeferred : pe_load_debug_info(pcs, module); |
| } |
| } |
| UnmapViewOfFile(mapping); |
| } |
| CloseHandle(hMap); |
| } |
| if (opened) CloseHandle(hFile); |
| |
| return module; |
| } |
| |
| /****************************************************************** |
| * pe_load_module_from_pcs |
| * |
| */ |
| struct module* pe_load_module_from_pcs(struct process* pcs, const char* name, |
| const char* mod_name, DWORD base, DWORD size) |
| { |
| struct module* module; |
| const char* ptr; |
| |
| if ((module = module_find_by_name(pcs, name, DMT_PE))) return module; |
| if (mod_name) ptr = mod_name; |
| else |
| { |
| for (ptr = name + strlen(name) - 1; ptr >= name; ptr--) |
| { |
| if (*ptr == '/' || *ptr == '\\') |
| { |
| ptr++; |
| break; |
| } |
| } |
| } |
| if (ptr && (module = module_find_by_name(pcs, ptr, DMT_PE))) return module; |
| if (base && pcs->dbg_hdr_addr) |
| { |
| IMAGE_DOS_HEADER dos; |
| IMAGE_NT_HEADERS nth; |
| |
| if (read_mem(pcs->handle, base, &dos, sizeof(dos)) && |
| dos.e_magic == IMAGE_DOS_SIGNATURE && |
| read_mem(pcs->handle, base + dos.e_lfanew, &nth, sizeof(nth)) && |
| nth.Signature == IMAGE_NT_SIGNATURE) |
| { |
| if (!size) size = nth.OptionalHeader.SizeOfImage; |
| module = module_new(pcs, name, DMT_PE, base, size, |
| nth.FileHeader.TimeDateStamp, nth.OptionalHeader.CheckSum); |
| } |
| } |
| return module; |
| } |
