516 lines
19 KiB
C
516 lines
19 KiB
C
/*
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* File pe_module.c - handle PE module information
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*
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* Copyright (C) 1996, Eric Youngdale.
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* Copyright (C) 1999-2000, Ulrich Weigand.
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* Copyright (C) 2004-2007, Eric Pouech.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
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*
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*/
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#include "config.h"
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#include "wine/port.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <assert.h>
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#include "dbghelp_private.h"
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#include "winternl.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
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/******************************************************************
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* pe_load_symbol_table
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*
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* Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
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* of global symbols.
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* Mingw32 requires this for stabs debug information as address for global variables isn't filled in
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* (this is similar to what is done in elf_module.c when using the .symtab ELF section)
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*/
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static BOOL pe_load_symbol_table(struct module* module, IMAGE_NT_HEADERS* nth, void* mapping)
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{
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const IMAGE_SYMBOL* isym;
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int i, numsym, naux;
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const char* strtable;
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char tmp[9];
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const char* name;
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struct hash_table_iter hti;
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void* ptr;
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struct symt_data* sym;
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const IMAGE_SECTION_HEADER* sect;
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numsym = nth->FileHeader.NumberOfSymbols;
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if (!nth->FileHeader.PointerToSymbolTable || !numsym)
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return TRUE;
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isym = (const IMAGE_SYMBOL*)((char*)mapping + nth->FileHeader.PointerToSymbolTable);
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/* FIXME: no way to get strtable size */
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strtable = (const char*)&isym[numsym];
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sect = IMAGE_FIRST_SECTION(nth);
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for (i = 0; i < numsym; i+= naux, isym += naux)
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{
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if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
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isym->SectionNumber > 0 && isym->SectionNumber <= nth->FileHeader.NumberOfSections)
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{
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if (isym->N.Name.Short)
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{
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name = memcpy(tmp, isym->N.ShortName, 8);
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tmp[8] = '\0';
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}
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else name = strtable + isym->N.Name.Long;
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if (name[0] == '_') name++;
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hash_table_iter_init(&module->ht_symbols, &hti, name);
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while ((ptr = hash_table_iter_up(&hti)))
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{
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sym = GET_ENTRY(ptr, struct symt_data, hash_elt);
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if (sym->symt.tag == SymTagData &&
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(sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
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!strcmp(sym->hash_elt.name, name))
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{
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TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
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isym->SectionNumber, name, sym->u.var.offset,
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wine_dbgstr_longlong(module->module.BaseOfImage +
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sect[isym->SectionNumber - 1].VirtualAddress + isym->Value));
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sym->u.var.offset = module->module.BaseOfImage +
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sect[isym->SectionNumber - 1].VirtualAddress + isym->Value;
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break;
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}
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}
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}
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naux = isym->NumberOfAuxSymbols + 1;
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}
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return TRUE;
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}
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/******************************************************************
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* pe_load_stabs
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*
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* look for stabs information in PE header (it's how the mingw compiler provides
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* its debugging information)
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*/
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static BOOL pe_load_stabs(const struct process* pcs, struct module* module,
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void* mapping, IMAGE_NT_HEADERS* nth)
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{
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IMAGE_SECTION_HEADER* section;
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int i, stabsize = 0, stabstrsize = 0;
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unsigned int stabs = 0, stabstr = 0;
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BOOL ret = FALSE;
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section = (IMAGE_SECTION_HEADER*)
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((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
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for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
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{
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if (!strcasecmp((const char*)section->Name, ".stab"))
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{
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stabs = section->VirtualAddress;
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stabsize = section->SizeOfRawData;
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}
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else if (!strncasecmp((const char*)section->Name, ".stabstr", 8))
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{
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stabstr = section->VirtualAddress;
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stabstrsize = section->SizeOfRawData;
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}
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}
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if (stabstrsize && stabsize)
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{
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ret = stabs_parse(module,
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module->module.BaseOfImage - nth->OptionalHeader.ImageBase,
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RtlImageRvaToVa(nth, mapping, stabs, NULL),
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stabsize,
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RtlImageRvaToVa(nth, mapping, stabstr, NULL),
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stabstrsize,
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NULL, NULL);
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if (ret) pe_load_symbol_table(module, nth, mapping);
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}
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TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
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return ret;
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}
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/******************************************************************
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* pe_load_dbg_file
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*
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* loads a .dbg file
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*/
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static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
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const char* dbg_name, DWORD timestamp)
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{
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char tmp[MAX_PATH];
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HANDLE hFile = INVALID_HANDLE_VALUE, hMap = 0;
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const BYTE* dbg_mapping = NULL;
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BOOL ret = FALSE;
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TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
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if (path_find_symbol_file(pcs, dbg_name, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
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(hFile = CreateFileA(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
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OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
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((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
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((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
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{
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const IMAGE_SEPARATE_DEBUG_HEADER* hdr;
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const IMAGE_SECTION_HEADER* sectp;
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const IMAGE_DEBUG_DIRECTORY* dbg;
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hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
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/* section headers come immediately after debug header */
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sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
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/* and after that and the exported names comes the debug directory */
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dbg = (const IMAGE_DEBUG_DIRECTORY*)
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(dbg_mapping + sizeof(*hdr) +
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hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
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hdr->ExportedNamesSize);
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ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
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hdr->NumberOfSections, dbg,
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hdr->DebugDirectorySize / sizeof(*dbg));
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}
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else
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ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_a(tmp));
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if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
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if (hMap) CloseHandle(hMap);
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if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
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return ret;
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}
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/******************************************************************
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* pe_load_msc_debug_info
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*
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* Process MSC debug information in PE file.
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*/
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static BOOL pe_load_msc_debug_info(const struct process* pcs,
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struct module* module,
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void* mapping, const IMAGE_NT_HEADERS* nth)
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{
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BOOL ret = FALSE;
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const IMAGE_DATA_DIRECTORY* dir;
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const IMAGE_DEBUG_DIRECTORY*dbg = NULL;
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int nDbg;
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/* Read in debug directory */
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dir = nth->OptionalHeader.DataDirectory + IMAGE_DIRECTORY_ENTRY_DEBUG;
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nDbg = dir->Size / sizeof(IMAGE_DEBUG_DIRECTORY);
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if (!nDbg) return FALSE;
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dbg = RtlImageRvaToVa(nth, mapping, dir->VirtualAddress, NULL);
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/* Parse debug directory */
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if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
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{
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/* Debug info is stripped to .DBG file */
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const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
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((const char*)mapping + dbg->PointerToRawData);
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if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
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misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
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{
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WINE_ERR("-Debug info stripped, but no .DBG file in module %s\n",
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debugstr_w(module->module.ModuleName));
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}
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else
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{
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ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
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}
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}
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else
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{
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const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
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/* Debug info is embedded into PE module */
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ret = pe_load_debug_directory(pcs, module, mapping, sectp,
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nth->FileHeader.NumberOfSections, dbg, nDbg);
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}
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return ret;
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}
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/***********************************************************************
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* pe_load_export_debug_info
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*/
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static BOOL pe_load_export_debug_info(const struct process* pcs,
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struct module* module,
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void* mapping, const IMAGE_NT_HEADERS* nth)
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{
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unsigned int i;
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const IMAGE_EXPORT_DIRECTORY* exports;
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DWORD base = module->module.BaseOfImage;
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DWORD size;
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if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
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#if 0
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/* Add start of DLL (better use the (yet unimplemented) Exe SymTag for this) */
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/* FIXME: module.ModuleName isn't correctly set yet if it's passed in SymLoadModule */
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symt_new_public(module, NULL, module->module.ModuleName, base, 1,
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TRUE /* FIXME */, TRUE /* FIXME */);
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#endif
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/* Add entry point */
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symt_new_public(module, NULL, "EntryPoint",
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base + nth->OptionalHeader.AddressOfEntryPoint, 1,
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TRUE, TRUE);
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#if 0
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/* FIXME: we'd better store addresses linked to sections rather than
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absolute values */
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IMAGE_SECTION_HEADER* section;
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/* Add start of sections */
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section = (IMAGE_SECTION_HEADER*)
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((char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
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for (i = 0; i < nth->FileHeader.NumberOfSections; i++, section++)
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{
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symt_new_public(module, NULL, section->Name,
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RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL),
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1, TRUE /* FIXME */, TRUE /* FIXME */);
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}
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#endif
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/* Add exported functions */
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if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
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IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
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{
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const WORD* ordinals = NULL;
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const DWORD_PTR* functions = NULL;
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const DWORD* names = NULL;
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unsigned int j;
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char buffer[16];
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functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
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ordinals = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
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names = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
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if (functions && ordinals && names)
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{
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for (i = 0; i < exports->NumberOfNames; i++)
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{
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if (!names[i]) continue;
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symt_new_public(module, NULL,
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RtlImageRvaToVa(nth, mapping, names[i], NULL),
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base + functions[ordinals[i]],
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1, TRUE /* FIXME */, TRUE /* FIXME */);
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}
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for (i = 0; i < exports->NumberOfFunctions; i++)
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{
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if (!functions[i]) continue;
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/* Check if we already added it with a name */
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for (j = 0; j < exports->NumberOfNames; j++)
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if ((ordinals[j] == i) && names[j]) break;
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if (j < exports->NumberOfNames) continue;
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snprintf(buffer, sizeof(buffer), "%d", i + exports->Base);
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symt_new_public(module, NULL, buffer, base + (DWORD)functions[i], 1,
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TRUE /* FIXME */, TRUE /* FIXME */);
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}
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}
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}
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/* no real debug info, only entry points */
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if (module->module.SymType == SymDeferred)
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module->module.SymType = SymExport;
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return TRUE;
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}
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/******************************************************************
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* pe_load_debug_info
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*
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*/
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BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
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{
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BOOL ret = FALSE;
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HANDLE hFile;
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HANDLE hMap;
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void* mapping;
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IMAGE_NT_HEADERS* nth;
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hFile = CreateFileW(module->module.LoadedImageName, GENERIC_READ, FILE_SHARE_READ,
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NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
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if (hFile == INVALID_HANDLE_VALUE) return ret;
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if ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0)
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{
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if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
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{
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nth = RtlImageNtHeader(mapping);
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if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
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{
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ret = pe_load_stabs(pcs, module, mapping, nth) ||
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pe_load_msc_debug_info(pcs, module, mapping, nth);
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/* if we still have no debug info (we could only get SymExport at this
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* point), then do the SymExport except if we have an ELF container,
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* in which case we'll rely on the export's on the ELF side
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*/
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}
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/* FIXME shouldn't we check that? if (!module_get_debug(pcs, module))l */
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if (pe_load_export_debug_info(pcs, module, mapping, nth) && !ret)
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ret = TRUE;
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UnmapViewOfFile(mapping);
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}
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CloseHandle(hMap);
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}
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CloseHandle(hFile);
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return ret;
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}
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/******************************************************************
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* pe_load_native_module
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*
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*/
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struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
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HANDLE hFile, DWORD base, DWORD size)
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{
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struct module* module = NULL;
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BOOL opened = FALSE;
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HANDLE hMap;
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WCHAR loaded_name[MAX_PATH];
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loaded_name[0] = '\0';
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if (!hFile)
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{
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assert(name);
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if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
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return NULL;
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opened = TRUE;
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}
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else if (name) strcpyW(loaded_name, name);
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else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
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FIXME("Trouble ahead (no module name passed in deferred mode)\n");
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if ((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != NULL)
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{
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void* mapping;
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if ((mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL)
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{
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IMAGE_NT_HEADERS* nth = RtlImageNtHeader(mapping);
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if (nth)
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{
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if (!base) base = nth->OptionalHeader.ImageBase;
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if (!size) size = nth->OptionalHeader.SizeOfImage;
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module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
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nth->FileHeader.TimeDateStamp,
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nth->OptionalHeader.CheckSum);
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if (module)
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{
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if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
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module->module.SymType = SymDeferred;
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else
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pe_load_debug_info(pcs, module);
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}
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else
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ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
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}
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UnmapViewOfFile(mapping);
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}
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CloseHandle(hMap);
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}
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if (opened) CloseHandle(hFile);
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return module;
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}
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/******************************************************************
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* pe_load_nt_header
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*
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*/
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BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
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{
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IMAGE_DOS_HEADER dos;
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return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
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dos.e_magic == IMAGE_DOS_SIGNATURE &&
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ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
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nth, sizeof(*nth), NULL) &&
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nth->Signature == IMAGE_NT_SIGNATURE;
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}
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/******************************************************************
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* pe_load_builtin_module
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*
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*/
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struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
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DWORD64 base, DWORD64 size)
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{
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struct module* module = NULL;
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if (base && pcs->dbg_hdr_addr)
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{
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IMAGE_NT_HEADERS nth;
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if (pe_load_nt_header(pcs->handle, base, &nth))
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{
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if (!size) size = nth.OptionalHeader.SizeOfImage;
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module = module_new(pcs, name, DMT_PE, FALSE, base, size,
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nth.FileHeader.TimeDateStamp,
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nth.OptionalHeader.CheckSum);
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}
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}
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return module;
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}
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/***********************************************************************
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* ImageDirectoryEntryToDataEx (DBGHELP.@)
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*
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* Search for specified directory in PE image
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*
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* PARAMS
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*
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* base [in] Image base address
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* image [in] TRUE - image has been loaded by loader, FALSE - raw file image
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* dir [in] Target directory index
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* size [out] Receives directory size
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* section [out] Receives pointer to section header of section containing directory data
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*
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* RETURNS
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* Success: pointer to directory data
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* Failure: NULL
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*
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*/
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PVOID WINAPI ImageDirectoryEntryToDataEx( PVOID base, BOOLEAN image, USHORT dir, PULONG size, PIMAGE_SECTION_HEADER *section )
|
|
{
|
|
const IMAGE_NT_HEADERS *nt;
|
|
DWORD addr;
|
|
|
|
*size = 0;
|
|
if (section) *section = NULL;
|
|
|
|
if (!(nt = RtlImageNtHeader( base ))) return NULL;
|
|
if (dir >= nt->OptionalHeader.NumberOfRvaAndSizes) return NULL;
|
|
if (!(addr = nt->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
|
|
|
|
*size = nt->OptionalHeader.DataDirectory[dir].Size;
|
|
if (image || addr < nt->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
|
|
|
|
return RtlImageRvaToVa( nt, base, addr, section );
|
|
}
|
|
|
|
/***********************************************************************
|
|
* ImageDirectoryEntryToData (DBGHELP.@)
|
|
*
|
|
* NOTES
|
|
* See ImageDirectoryEntryToDataEx
|
|
*/
|
|
PVOID WINAPI ImageDirectoryEntryToData( PVOID base, BOOLEAN image, USHORT dir, PULONG size )
|
|
{
|
|
return ImageDirectoryEntryToDataEx( base, image, dir, size, NULL );
|
|
}
|