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wine-wine/dlls/dbghelp/pe_module.c

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/*
* File pe_module.c - handle PE module information
*
* Copyright (C) 1996, Eric Youngdale.
* Copyright (C) 1999-2000, Ulrich Weigand.
* Copyright (C) 2004-2007, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <assert.h>
#include "dbghelp_private.h"
#include "image_private.h"
#include "winternl.h"
#include "wine/debug.h"
#include "wine/heap.h"
WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
struct pe_module_info
{
struct image_file_map fmap;
};
static const char builtin_signature[] = "Wine builtin DLL";
static void* pe_map_full(struct image_file_map* fmap, IMAGE_NT_HEADERS** nth)
{
if (!fmap->u.pe.full_map)
{
fmap->u.pe.full_map = MapViewOfFile(fmap->u.pe.hMap, FILE_MAP_READ, 0, 0, 0);
}
if (fmap->u.pe.full_map)
{
if (nth) *nth = RtlImageNtHeader(fmap->u.pe.full_map);
fmap->u.pe.full_count++;
return fmap->u.pe.full_map;
}
return NULL;
}
static void pe_unmap_full(struct image_file_map* fmap)
{
if (fmap->u.pe.full_count && !--fmap->u.pe.full_count)
{
UnmapViewOfFile(fmap->u.pe.full_map);
fmap->u.pe.full_map = NULL;
}
}
/******************************************************************
* pe_map_section
*
* Maps a single section into memory from an PE file
*/
static const char* pe_map_section(struct image_section_map* ism)
{
void* mapping;
struct pe_file_map* fmap = &ism->fmap->u.pe;
if (ism->sidx >= 0 && ism->sidx < fmap->ntheader.FileHeader.NumberOfSections &&
fmap->sect[ism->sidx].mapped == IMAGE_NO_MAP)
{
IMAGE_NT_HEADERS* nth;
if (fmap->sect[ism->sidx].shdr.Misc.VirtualSize > fmap->sect[ism->sidx].shdr.SizeOfRawData)
{
FIXME("Section %ld: virtual (0x%x) > raw (0x%x) size - not supported\n",
ism->sidx, fmap->sect[ism->sidx].shdr.Misc.VirtualSize,
fmap->sect[ism->sidx].shdr.SizeOfRawData);
return IMAGE_NO_MAP;
}
/* FIXME: that's rather drastic, but that will do for now
* that's ok if the full file map exists, but we could be less aggressive otherwise and
* only map the relevant section
*/
if ((mapping = pe_map_full(ism->fmap, &nth)))
{
fmap->sect[ism->sidx].mapped = RtlImageRvaToVa(nth, mapping,
fmap->sect[ism->sidx].shdr.VirtualAddress,
NULL);
return fmap->sect[ism->sidx].mapped;
}
}
return IMAGE_NO_MAP;
}
/******************************************************************
* pe_find_section
*
* Finds a section by name (and type) into memory from an PE file
* or its alternate if any
*/
static BOOL pe_find_section(struct image_file_map* fmap, const char* name,
struct image_section_map* ism)
{
const char* sectname;
unsigned i;
char tmp[IMAGE_SIZEOF_SHORT_NAME + 1];
for (i = 0; i < fmap->u.pe.ntheader.FileHeader.NumberOfSections; i++)
{
sectname = (const char*)fmap->u.pe.sect[i].shdr.Name;
/* long section names start with a '/' (at least on MinGW32) */
if (sectname[0] == '/' && fmap->u.pe.strtable)
sectname = fmap->u.pe.strtable + atoi(sectname + 1);
else
{
/* the section name may not be null terminated */
sectname = memcpy(tmp, sectname, IMAGE_SIZEOF_SHORT_NAME);
tmp[IMAGE_SIZEOF_SHORT_NAME] = '\0';
}
if (!stricmp(sectname, name))
{
ism->fmap = fmap;
ism->sidx = i;
return TRUE;
}
}
ism->fmap = NULL;
ism->sidx = -1;
return FALSE;
}
/******************************************************************
* pe_unmap_section
*
* Unmaps a single section from memory
*/
static void pe_unmap_section(struct image_section_map* ism)
{
if (ism->sidx >= 0 && ism->sidx < ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections &&
ism->fmap->u.pe.sect[ism->sidx].mapped != IMAGE_NO_MAP)
{
pe_unmap_full(ism->fmap);
ism->fmap->u.pe.sect[ism->sidx].mapped = IMAGE_NO_MAP;
}
}
/******************************************************************
* pe_get_map_rva
*
* Get the RVA of an PE section
*/
static DWORD_PTR pe_get_map_rva(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
return 0;
return ism->fmap->u.pe.sect[ism->sidx].shdr.VirtualAddress;
}
/******************************************************************
* pe_get_map_size
*
* Get the size of a PE section
*/
static unsigned pe_get_map_size(const struct image_section_map* ism)
{
if (ism->sidx < 0 || ism->sidx >= ism->fmap->u.pe.ntheader.FileHeader.NumberOfSections)
return 0;
return ism->fmap->u.pe.sect[ism->sidx].shdr.Misc.VirtualSize;
}
/******************************************************************
* pe_unmap_file
*
* Unmaps an PE file from memory (previously mapped with pe_map_file)
*/
static void pe_unmap_file(struct image_file_map* fmap)
{
if (fmap->u.pe.hMap != 0)
{
struct image_section_map ism;
ism.fmap = fmap;
for (ism.sidx = 0; ism.sidx < fmap->u.pe.ntheader.FileHeader.NumberOfSections; ism.sidx++)
{
pe_unmap_section(&ism);
}
while (fmap->u.pe.full_count) pe_unmap_full(fmap);
HeapFree(GetProcessHeap(), 0, fmap->u.pe.sect);
HeapFree(GetProcessHeap(), 0, (void*)fmap->u.pe.strtable); /* FIXME ugly (see pe_map_file) */
CloseHandle(fmap->u.pe.hMap);
fmap->u.pe.hMap = NULL;
}
}
static const struct image_file_map_ops pe_file_map_ops =
{
pe_map_section,
pe_unmap_section,
pe_find_section,
pe_get_map_rva,
pe_get_map_size,
pe_unmap_file,
};
/******************************************************************
* pe_is_valid_pointer_table
*
* Checks whether the PointerToSymbolTable and NumberOfSymbols in file_header contain
* valid information.
*/
static BOOL pe_is_valid_pointer_table(const IMAGE_NT_HEADERS* nthdr, const void* mapping, DWORD64 sz)
{
DWORD64 offset;
/* is the iSym table inside file size ? (including first DWORD of string table, which is its size) */
offset = (DWORD64)nthdr->FileHeader.PointerToSymbolTable;
offset += (DWORD64)nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
if (offset + sizeof(DWORD) > sz) return FALSE;
/* is string table (following iSym table) inside file size ? */
offset += *(DWORD*)((const char*)mapping + offset);
return offset <= sz;
}
/******************************************************************
* pe_map_file
*
* Maps an PE file into memory (and checks it's a real PE file)
*/
BOOL pe_map_file(HANDLE file, struct image_file_map* fmap, enum module_type mt)
{
void* mapping;
fmap->modtype = mt;
fmap->ops = &pe_file_map_ops;
fmap->alternate = NULL;
fmap->u.pe.hMap = CreateFileMappingW(file, NULL, PAGE_READONLY, 0, 0, NULL);
if (fmap->u.pe.hMap == 0) return FALSE;
fmap->u.pe.full_count = 0;
fmap->u.pe.full_map = NULL;
if (!(mapping = pe_map_full(fmap, NULL))) goto error;
switch (mt)
{
case DMT_PE:
{
IMAGE_NT_HEADERS* nthdr;
IMAGE_SECTION_HEADER* section;
unsigned i;
if (!(nthdr = RtlImageNtHeader(mapping))) goto error;
memcpy(&fmap->u.pe.ntheader, nthdr, sizeof(fmap->u.pe.ntheader));
switch (nthdr->OptionalHeader.Magic)
{
case 0x10b: fmap->addr_size = 32; break;
case 0x20b: fmap->addr_size = 64; break;
default: return FALSE;
}
fmap->u.pe.builtin = !memcmp((const IMAGE_DOS_HEADER*)mapping + 1, builtin_signature, sizeof(builtin_signature));
section = (IMAGE_SECTION_HEADER*)
((char*)&nthdr->OptionalHeader + nthdr->FileHeader.SizeOfOptionalHeader);
fmap->u.pe.sect = HeapAlloc(GetProcessHeap(), 0,
nthdr->FileHeader.NumberOfSections * sizeof(fmap->u.pe.sect[0]));
if (!fmap->u.pe.sect) goto error;
for (i = 0; i < nthdr->FileHeader.NumberOfSections; i++)
{
memcpy(&fmap->u.pe.sect[i].shdr, section + i, sizeof(IMAGE_SECTION_HEADER));
fmap->u.pe.sect[i].mapped = IMAGE_NO_MAP;
}
if (nthdr->FileHeader.PointerToSymbolTable && nthdr->FileHeader.NumberOfSymbols)
{
LARGE_INTEGER li;
if (GetFileSizeEx(file, &li) && pe_is_valid_pointer_table(nthdr, mapping, li.QuadPart))
{
/* FIXME ugly: should rather map the relevant content instead of copying it */
const char* src = (const char*)mapping +
nthdr->FileHeader.PointerToSymbolTable +
nthdr->FileHeader.NumberOfSymbols * sizeof(IMAGE_SYMBOL);
char* dst;
DWORD sz = *(DWORD*)src;
if ((dst = HeapAlloc(GetProcessHeap(), 0, sz)))
memcpy(dst, src, sz);
fmap->u.pe.strtable = dst;
}
else
{
WARN("Bad coff table... wipping out\n");
/* we have bad information here, wipe it out */
fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable = 0;
fmap->u.pe.ntheader.FileHeader.NumberOfSymbols = 0;
fmap->u.pe.strtable = NULL;
}
}
else fmap->u.pe.strtable = NULL;
}
break;
default: assert(0); goto error;
}
pe_unmap_full(fmap);
return TRUE;
error:
pe_unmap_full(fmap);
CloseHandle(fmap->u.pe.hMap);
return FALSE;
}
/******************************************************************
* pe_map_directory
*
* Maps a directory content out of a PE file
*/
const char* pe_map_directory(struct module* module, int dirno, DWORD* size)
{
IMAGE_NT_HEADERS* nth;
void* mapping;
if (module->type != DMT_PE || !module->format_info[DFI_PE]) return NULL;
if (dirno >= IMAGE_NUMBEROF_DIRECTORY_ENTRIES ||
!(mapping = pe_map_full(&module->format_info[DFI_PE]->u.pe_info->fmap, &nth)))
return NULL;
if (size) *size = nth->OptionalHeader.DataDirectory[dirno].Size;
return RtlImageRvaToVa(nth, mapping,
nth->OptionalHeader.DataDirectory[dirno].VirtualAddress, NULL);
}
static void pe_module_remove(struct process* pcs, struct module_format* modfmt)
{
image_unmap_file(&modfmt->u.pe_info->fmap);
HeapFree(GetProcessHeap(), 0, modfmt);
}
/******************************************************************
* pe_locate_with_coff_symbol_table
*
* Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
* of global symbols.
* Mingw32 requires this for stabs debug information as address for global variables isn't filled in
* (this is similar to what is done in elf_module.c when using the .symtab ELF section)
*/
static BOOL pe_locate_with_coff_symbol_table(struct module* module)
{
struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
const IMAGE_SYMBOL* isym;
int i, numsym, naux;
char tmp[9];
const char* name;
struct hash_table_iter hti;
void* ptr;
struct symt_data* sym;
const char* mapping;
numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
return TRUE;
if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
for (i = 0; i < numsym; i+= naux, isym += naux)
{
if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
{
if (isym->N.Name.Short)
{
name = memcpy(tmp, isym->N.ShortName, 8);
tmp[8] = '\0';
}
else name = fmap->u.pe.strtable + isym->N.Name.Long;
if (name[0] == '_') name++;
hash_table_iter_init(&module->ht_symbols, &hti, name);
while ((ptr = hash_table_iter_up(&hti)))
{
sym = CONTAINING_RECORD(ptr, struct symt_data, hash_elt);
if (sym->symt.tag == SymTagData &&
(sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
sym->u.var.kind == loc_absolute &&
!strcmp(sym->hash_elt.name, name))
{
TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
isym->SectionNumber, name, sym->u.var.offset,
wine_dbgstr_longlong(module->module.BaseOfImage +
fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
isym->Value));
sym->u.var.offset = module->module.BaseOfImage +
fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
break;
}
}
}
naux = isym->NumberOfAuxSymbols + 1;
}
pe_unmap_full(fmap);
return TRUE;
}
/******************************************************************
* pe_load_coff_symbol_table
*
* Load public symbols out of the COFF symbol table (if any).
*/
static BOOL pe_load_coff_symbol_table(struct module* module)
{
struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
const IMAGE_SYMBOL* isym;
int i, numsym, naux;
const char* strtable;
char tmp[9];
const char* name;
const char* lastfilename = NULL;
struct symt_compiland* compiland = NULL;
const IMAGE_SECTION_HEADER* sect;
const char* mapping;
numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
return TRUE;
if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
isym = (const IMAGE_SYMBOL*)((const char*)mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
/* FIXME: no way to get strtable size */
strtable = (const char*)&isym[numsym];
sect = IMAGE_FIRST_SECTION(RtlImageNtHeader((HMODULE)mapping));
for (i = 0; i < numsym; i+= naux, isym += naux)
{
if (isym->StorageClass == IMAGE_SYM_CLASS_FILE)
{
lastfilename = (const char*)(isym + 1);
compiland = NULL;
}
if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
{
if (isym->N.Name.Short)
{
name = memcpy(tmp, isym->N.ShortName, 8);
tmp[8] = '\0';
}
else name = strtable + isym->N.Name.Long;
if (name[0] == '_') name++;
if (!compiland && lastfilename)
compiland = symt_new_compiland(module, 0,
source_new(module, NULL, lastfilename));
if (!(dbghelp_options & SYMOPT_NO_PUBLICS))
symt_new_public(module, compiland, name, FALSE,
module->module.BaseOfImage + sect[isym->SectionNumber - 1].VirtualAddress +
isym->Value,
1);
}
naux = isym->NumberOfAuxSymbols + 1;
}
module->module.SymType = SymCoff;
module->module.LineNumbers = FALSE;
module->module.GlobalSymbols = FALSE;
module->module.TypeInfo = FALSE;
module->module.SourceIndexed = FALSE;
module->module.Publics = TRUE;
pe_unmap_full(fmap);
return TRUE;
}
/******************************************************************
* pe_load_stabs
*
* look for stabs information in PE header (it's how the mingw compiler provides
* its debugging information)
*/
static BOOL pe_load_stabs(const struct process* pcs, struct module* module)
{
struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
struct image_section_map sect_stabs, sect_stabstr;
BOOL ret = FALSE;
if (pe_find_section(fmap, ".stab", &sect_stabs) && pe_find_section(fmap, ".stabstr", &sect_stabstr))
{
const char* stab;
const char* stabstr;
stab = image_map_section(&sect_stabs);
stabstr = image_map_section(&sect_stabstr);
if (stab != IMAGE_NO_MAP && stabstr != IMAGE_NO_MAP)
{
ret = stabs_parse(module,
module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
stab, image_get_map_size(&sect_stabs) / sizeof(struct stab_nlist), sizeof(struct stab_nlist),
stabstr, image_get_map_size(&sect_stabstr),
NULL, NULL);
}
image_unmap_section(&sect_stabs);
image_unmap_section(&sect_stabstr);
if (ret) pe_locate_with_coff_symbol_table(module);
}
TRACE("%s the STABS debug info\n", ret ? "successfully loaded" : "failed to load");
return ret;
}
/******************************************************************
* pe_load_dwarf
*
* look for dwarf information in PE header (it's also a way for the mingw compiler
* to provide its debugging information)
*/
static BOOL pe_load_dwarf(struct module* module)
{
struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
BOOL ret;
ret = dwarf2_parse(module,
module->module.BaseOfImage - fmap->u.pe.ntheader.OptionalHeader.ImageBase,
NULL, /* FIXME: some thunks to deal with ? */
fmap);
TRACE("%s the DWARF debug info\n", ret ? "successfully loaded" : "failed to load");
return ret;
}
/******************************************************************
* pe_load_dbg_file
*
* loads a .dbg file
*/
static BOOL pe_load_dbg_file(const struct process* pcs, struct module* module,
const char* dbg_name, DWORD timestamp)
{
WCHAR tmp[MAX_PATH];
HANDLE hFile = INVALID_HANDLE_VALUE, hMap = 0;
const BYTE* dbg_mapping = NULL;
BOOL ret = FALSE;
TRACE("Processing DBG file %s\n", debugstr_a(dbg_name));
if (path_find_symbol_file(pcs, module, dbg_name, DMT_DBG, NULL, timestamp, 0, tmp, &module->module.DbgUnmatched) &&
(hFile = CreateFileW(tmp, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL)) != INVALID_HANDLE_VALUE &&
((hMap = CreateFileMappingW(hFile, NULL, PAGE_READONLY, 0, 0, NULL)) != 0) &&
((dbg_mapping = MapViewOfFile(hMap, FILE_MAP_READ, 0, 0, 0)) != NULL))
{
const IMAGE_SEPARATE_DEBUG_HEADER* hdr;
const IMAGE_SECTION_HEADER* sectp;
const IMAGE_DEBUG_DIRECTORY* dbg;
hdr = (const IMAGE_SEPARATE_DEBUG_HEADER*)dbg_mapping;
/* section headers come immediately after debug header */
sectp = (const IMAGE_SECTION_HEADER*)(hdr + 1);
/* and after that and the exported names comes the debug directory */
dbg = (const IMAGE_DEBUG_DIRECTORY*)
(dbg_mapping + sizeof(*hdr) +
hdr->NumberOfSections * sizeof(IMAGE_SECTION_HEADER) +
hdr->ExportedNamesSize);
ret = pe_load_debug_directory(pcs, module, dbg_mapping, sectp,
hdr->NumberOfSections, dbg,
hdr->DebugDirectorySize / sizeof(*dbg));
}
else
ERR("Couldn't find .DBG file %s (%s)\n", debugstr_a(dbg_name), debugstr_w(tmp));
if (dbg_mapping) UnmapViewOfFile(dbg_mapping);
if (hMap) CloseHandle(hMap);
if (hFile != INVALID_HANDLE_VALUE) CloseHandle(hFile);
return ret;
}
/******************************************************************
* pe_load_msc_debug_info
*
* Process MSC debug information in PE file.
*/
static BOOL pe_load_msc_debug_info(const struct process* pcs, struct module* module)
{
struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
BOOL ret = FALSE;
const IMAGE_DEBUG_DIRECTORY*dbg;
ULONG nDbg;
void* mapping;
IMAGE_NT_HEADERS* nth;
if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
/* Read in debug directory */
dbg = RtlImageDirectoryEntryToData( mapping, FALSE, IMAGE_DIRECTORY_ENTRY_DEBUG, &nDbg );
if (!dbg || !(nDbg /= sizeof(IMAGE_DEBUG_DIRECTORY))) goto done;
/* Parse debug directory */
if (nth->FileHeader.Characteristics & IMAGE_FILE_DEBUG_STRIPPED)
{
/* Debug info is stripped to .DBG file */
const IMAGE_DEBUG_MISC* misc = (const IMAGE_DEBUG_MISC*)
((const char*)mapping + dbg->PointerToRawData);
if (nDbg != 1 || dbg->Type != IMAGE_DEBUG_TYPE_MISC ||
misc->DataType != IMAGE_DEBUG_MISC_EXENAME)
{
ERR("-Debug info stripped, but no .DBG file in module %s\n",
debugstr_w(module->module.ModuleName));
}
else
{
ret = pe_load_dbg_file(pcs, module, (const char*)misc->Data, nth->FileHeader.TimeDateStamp);
}
}
else
{
const IMAGE_SECTION_HEADER *sectp = (const IMAGE_SECTION_HEADER*)((const char*)&nth->OptionalHeader + nth->FileHeader.SizeOfOptionalHeader);
/* Debug info is embedded into PE module */
ret = pe_load_debug_directory(pcs, module, mapping, sectp,
nth->FileHeader.NumberOfSections, dbg, nDbg);
}
done:
pe_unmap_full(fmap);
return ret;
}
/***********************************************************************
* pe_load_export_debug_info
*/
static BOOL pe_load_export_debug_info(const struct process* pcs, struct module* module)
{
struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
unsigned int i;
const IMAGE_EXPORT_DIRECTORY* exports;
DWORD base = module->module.BaseOfImage;
DWORD size;
IMAGE_NT_HEADERS* nth;
void* mapping;
if (dbghelp_options & SYMOPT_NO_PUBLICS) return TRUE;
if (!(mapping = pe_map_full(fmap, &nth))) return FALSE;
#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, FALSE, base, 1);
#endif
/* Add entry point */
symt_new_public(module, NULL, "EntryPoint", FALSE,
base + nth->OptionalHeader.AddressOfEntryPoint, 1);
#if 0
/* FIXME: we'd better store addresses linked to sections rather than
absolute values */
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++)
{
symt_new_public(module, NULL, section->Name, FALSE,
RtlImageRvaToVa(nth, mapping, section->VirtualAddress, NULL), 1);
}
#endif
/* Add exported functions */
if ((exports = RtlImageDirectoryEntryToData(mapping, FALSE,
IMAGE_DIRECTORY_ENTRY_EXPORT, &size)))
{
const WORD* ordinals = NULL;
const DWORD_PTR* functions = NULL;
const DWORD* names = NULL;
unsigned int j;
char buffer[16];
functions = RtlImageRvaToVa(nth, mapping, exports->AddressOfFunctions, NULL);
ordinals = RtlImageRvaToVa(nth, mapping, exports->AddressOfNameOrdinals, NULL);
names = RtlImageRvaToVa(nth, mapping, exports->AddressOfNames, NULL);
if (functions && ordinals && names)
{
for (i = 0; i < exports->NumberOfNames; i++)
{
if (!names[i]) continue;
symt_new_public(module, NULL,
RtlImageRvaToVa(nth, mapping, names[i], NULL),
FALSE,
base + functions[ordinals[i]], 1);
}
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), "%d", i + exports->Base);
symt_new_public(module, NULL, buffer, FALSE, base + (DWORD)functions[i], 1);
}
}
}
/* no real debug info, only entry points */
if (module->module.SymType == SymDeferred)
module->module.SymType = SymExport;
pe_unmap_full(fmap);
return TRUE;
}
/******************************************************************
* pe_load_debug_info
*
*/
BOOL pe_load_debug_info(const struct process* pcs, struct module* module)
{
BOOL ret = FALSE;
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
{
ret = image_check_alternate(&module->format_info[DFI_PE]->u.pe_info->fmap, module);
ret = pe_load_stabs(pcs, module) || ret;
ret = pe_load_dwarf(module) || ret;
ret = pe_load_msc_debug_info(pcs, module) || ret;
ret = ret || pe_load_coff_symbol_table(module); /* FIXME */
/* 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
*/
}
/* FIXME shouldn't we check that? if (!module_get_debug(pcs, module)) */
if (pe_load_export_debug_info(pcs, module) && !ret)
ret = TRUE;
return ret;
}
struct builtin_search
{
WCHAR *path;
struct image_file_map fmap;
};
static BOOL search_builtin_pe(void *param, HANDLE handle, const WCHAR *path)
{
struct builtin_search *search = param;
size_t size;
if (!pe_map_file(handle, &search->fmap, DMT_PE)) return FALSE;
size = (lstrlenW(path) + 1) * sizeof(WCHAR);
if ((search->path = heap_alloc(size)))
memcpy(search->path, path, size);
return TRUE;
}
/******************************************************************
* pe_load_native_module
*
*/
struct module* pe_load_native_module(struct process* pcs, const WCHAR* name,
HANDLE hFile, DWORD64 base, DWORD size)
{
struct module* module = NULL;
BOOL opened = FALSE;
struct module_format* modfmt;
WCHAR loaded_name[MAX_PATH];
loaded_name[0] = '\0';
if (!hFile)
{
assert(name);
if ((hFile = FindExecutableImageExW(name, pcs->search_path, loaded_name, NULL, NULL)) == NULL)
return NULL;
opened = TRUE;
}
else if (name) lstrcpyW(loaded_name, name);
else if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
FIXME("Trouble ahead (no module name passed in deferred mode)\n");
if (!(modfmt = HeapAlloc(GetProcessHeap(), 0, sizeof(struct module_format) + sizeof(struct pe_module_info))))
return NULL;
modfmt->u.pe_info = (struct pe_module_info*)(modfmt + 1);
if (pe_map_file(hFile, &modfmt->u.pe_info->fmap, DMT_PE))
{
struct builtin_search builtin = { NULL };
if (modfmt->u.pe_info->fmap.u.pe.builtin && search_dll_path(pcs, loaded_name, search_builtin_pe, &builtin))
{
TRACE("reloaded %s from %s\n", debugstr_w(loaded_name), debugstr_w(builtin.path));
image_unmap_file(&modfmt->u.pe_info->fmap);
modfmt->u.pe_info->fmap = builtin.fmap;
}
if (!base) base = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
if (!size) size = modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.SizeOfImage;
module = module_new(pcs, loaded_name, DMT_PE, FALSE, base, size,
modfmt->u.pe_info->fmap.u.pe.ntheader.FileHeader.TimeDateStamp,
modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.CheckSum);
if (module)
{
module->real_path = builtin.path;
modfmt->module = module;
modfmt->remove = pe_module_remove;
modfmt->loc_compute = NULL;
module->format_info[DFI_PE] = modfmt;
if (dbghelp_options & SYMOPT_DEFERRED_LOADS)
module->module.SymType = SymDeferred;
else
pe_load_debug_info(pcs, module);
module->reloc_delta = base - modfmt->u.pe_info->fmap.u.pe.ntheader.OptionalHeader.ImageBase;
}
else
{
ERR("could not load the module '%s'\n", debugstr_w(loaded_name));
heap_free(builtin.path);
image_unmap_file(&modfmt->u.pe_info->fmap);
}
}
if (!module) HeapFree(GetProcessHeap(), 0, modfmt);
if (opened) CloseHandle(hFile);
return module;
}
/******************************************************************
* pe_load_nt_header
*
*/
BOOL pe_load_nt_header(HANDLE hProc, DWORD64 base, IMAGE_NT_HEADERS* nth)
{
IMAGE_DOS_HEADER dos;
return ReadProcessMemory(hProc, (char*)(DWORD_PTR)base, &dos, sizeof(dos), NULL) &&
dos.e_magic == IMAGE_DOS_SIGNATURE &&
ReadProcessMemory(hProc, (char*)(DWORD_PTR)(base + dos.e_lfanew),
nth, sizeof(*nth), NULL) &&
nth->Signature == IMAGE_NT_SIGNATURE;
}
/******************************************************************
* pe_load_builtin_module
*
*/
struct module* pe_load_builtin_module(struct process* pcs, const WCHAR* name,
DWORD64 base, DWORD64 size)
{
struct module* module = NULL;
if (base && pcs->dbg_hdr_addr)
{
IMAGE_NT_HEADERS nth;
if (pe_load_nt_header(pcs->handle, base, &nth))
{
if (!size) size = nth.OptionalHeader.SizeOfImage;
module = module_new(pcs, name, DMT_PE, FALSE, base, size,
nth.FileHeader.TimeDateStamp,
nth.OptionalHeader.CheckSum);
}
}
return module;
}
/***********************************************************************
* ImageDirectoryEntryToDataEx (DBGHELP.@)
*
* Search for specified directory in PE image
*
* PARAMS
*
* base [in] Image base address
* image [in] TRUE - image has been loaded by loader, FALSE - raw file image
* dir [in] Target directory index
* size [out] Receives directory size
* section [out] Receives pointer to section header of section containing directory data
*
* RETURNS
* Success: pointer to directory data
* Failure: NULL
*
*/
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 (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR64_MAGIC)
{
const IMAGE_NT_HEADERS64 *nt64 = (const IMAGE_NT_HEADERS64 *)nt;
if (dir >= nt64->OptionalHeader.NumberOfRvaAndSizes) return NULL;
if (!(addr = nt64->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
*size = nt64->OptionalHeader.DataDirectory[dir].Size;
if (image || addr < nt64->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
}
else if (nt->OptionalHeader.Magic == IMAGE_NT_OPTIONAL_HDR32_MAGIC)
{
const IMAGE_NT_HEADERS32 *nt32 = (const IMAGE_NT_HEADERS32 *)nt;
if (dir >= nt32->OptionalHeader.NumberOfRvaAndSizes) return NULL;
if (!(addr = nt32->OptionalHeader.DataDirectory[dir].VirtualAddress)) return NULL;
*size = nt32->OptionalHeader.DataDirectory[dir].Size;
if (image || addr < nt32->OptionalHeader.SizeOfHeaders) return (char *)base + addr;
}
else return NULL;
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 );
}
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