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Sweden-Number/loader/pe_image.c

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/*
* Copyright 1994 Eric Youndale & Erik Bos
* Copyright 1995 Martin von Löwis
* Copyright 1996-98 Marcus Meissner
*
* based on Eric Youndale's pe-test and:
*
* ftp.microsoft.com:/pub/developer/MSDN/CD8/PEFILE.ZIP
* make that:
* ftp.microsoft.com:/developr/MSDN/OctCD/PEFILE.ZIP
*/
/* Notes:
* Before you start changing something in this file be aware of the following:
*
* - There are several functions called recursively. In a very subtle and
* obscure way. DLLs can reference each other recursively etc.
* - If you want to enhance, speed up or clean up something in here, think
* twice WHY it is implemented in that strange way. There is usually a reason.
* Though sometimes it might just be lazyness ;)
* - In PE_MapImage, right before fixup_imports() all external and internal
* state MUST be correct since this function can be called with the SAME image
* AGAIN. (Thats recursion for you.) That means MODREF.module and
* NE_MODULE.module32.
*/
#include "config.h"
#include <sys/types.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include <string.h>
#include "wine/winbase16.h"
#include "winerror.h"
#include "snoop.h"
#include "server.h"
#include "debugtools.h"
DEFAULT_DEBUG_CHANNEL(win32);
DECLARE_DEBUG_CHANNEL(delayhlp);
DECLARE_DEBUG_CHANNEL(fixup);
DECLARE_DEBUG_CHANNEL(module);
DECLARE_DEBUG_CHANNEL(relay);
DECLARE_DEBUG_CHANNEL(segment);
static IMAGE_EXPORT_DIRECTORY *get_exports( HMODULE hmod )
{
IMAGE_EXPORT_DIRECTORY *ret = NULL;
IMAGE_DATA_DIRECTORY *dir = PE_HEADER(hmod)->OptionalHeader.DataDirectory
+ IMAGE_DIRECTORY_ENTRY_EXPORT;
if (dir->Size && dir->VirtualAddress)
ret = (IMAGE_EXPORT_DIRECTORY *)((char *)hmod + dir->VirtualAddress);
return ret;
}
static IMAGE_IMPORT_DESCRIPTOR *get_imports( HMODULE hmod )
{
IMAGE_IMPORT_DESCRIPTOR *ret = NULL;
IMAGE_DATA_DIRECTORY *dir = PE_HEADER(hmod)->OptionalHeader.DataDirectory
+ IMAGE_DIRECTORY_ENTRY_IMPORT;
if (dir->Size && dir->VirtualAddress)
ret = (IMAGE_IMPORT_DESCRIPTOR *)((char *)hmod + dir->VirtualAddress);
return ret;
}
/* convert PE image VirtualAddress to Real Address */
#define RVA(x) ((void *)((char *)load_addr+(unsigned int)(x)))
#define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
void dump_exports( HMODULE hModule )
{
char *Module;
int i, j;
WORD *ordinal;
DWORD *function,*functions;
BYTE **name;
unsigned int load_addr = hModule;
DWORD rva_start = PE_HEADER(hModule)->OptionalHeader
.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
DWORD rva_end = rva_start + PE_HEADER(hModule)->OptionalHeader
.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
IMAGE_EXPORT_DIRECTORY *pe_exports = (IMAGE_EXPORT_DIRECTORY*)RVA(rva_start);
Module = (char*)RVA(pe_exports->Name);
TRACE("*******EXPORT DATA*******\n");
TRACE("Module name is %s, %ld functions, %ld names\n",
Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames);
ordinal = RVA(pe_exports->AddressOfNameOrdinals);
functions = function = RVA(pe_exports->AddressOfFunctions);
name = RVA(pe_exports->AddressOfNames);
TRACE(" Ord RVA Addr Name\n" );
for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
{
if (!*function) continue; /* No such function */
if (TRACE_ON(win32))
{
DPRINTF( "%4ld %08lx %p", i + pe_exports->Base, *function, RVA(*function) );
/* Check if we have a name for it */
for (j = 0; j < pe_exports->NumberOfNames; j++)
if (ordinal[j] == i)
{
DPRINTF( " %s", (char*)RVA(name[j]) );
break;
}
if ((*function >= rva_start) && (*function <= rva_end))
DPRINTF(" (forwarded -> %s)", (char *)RVA(*function));
DPRINTF("\n");
}
}
}
/* Look up the specified function or ordinal in the exportlist:
* If it is a string:
* - look up the name in the Name list.
* - look up the ordinal with that index.
* - use the ordinal as offset into the functionlist
* If it is a ordinal:
* - use ordinal-pe_export->Base as offset into the functionlist
*/
static FARPROC PE_FindExportedFunction(
WINE_MODREF *wm, /* [in] WINE modreference */
LPCSTR funcName, /* [in] function name */
BOOL snoop )
{
WORD * ordinals;
DWORD * function;
BYTE ** name, *ename = NULL;
int i, ordinal;
unsigned int load_addr = wm->module;
DWORD rva_start, rva_end, addr;
char * forward;
IMAGE_EXPORT_DIRECTORY *exports = get_exports(wm->module);
if (HIWORD(funcName))
TRACE("(%s)\n",funcName);
else
TRACE("(%d)\n",(int)funcName);
if (!exports) {
/* Not a fatal problem, some apps do
* GetProcAddress(0,"RegisterPenApp") which triggers this
* case.
*/
WARN("Module %08x(%s)/MODREF %p doesn't have a exports table.\n",wm->module,wm->modname,wm);
return NULL;
}
ordinals= RVA(exports->AddressOfNameOrdinals);
function= RVA(exports->AddressOfFunctions);
name = RVA(exports->AddressOfNames);
forward = NULL;
rva_start = PE_HEADER(wm->module)->OptionalHeader
.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].VirtualAddress;
rva_end = rva_start + PE_HEADER(wm->module)->OptionalHeader
.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT].Size;
if (HIWORD(funcName))
{
/* first try a binary search */
int min = 0, max = exports->NumberOfNames - 1;
while (min <= max)
{
int res, pos = (min + max) / 2;
ename = RVA(name[pos]);
if (!(res = strcmp( ename, funcName )))
{
ordinal = ordinals[pos];
goto found;
}
if (res > 0) max = pos - 1;
else min = pos + 1;
}
/* now try a linear search in case the names aren't sorted properly */
for (i = 0; i < exports->NumberOfNames; i++)
{
ename = RVA(name[i]);
if (!strcmp( ename, funcName ))
{
ERR( "%s.%s required a linear search\n", wm->modname, funcName );
ordinal = ordinals[i];
goto found;
}
}
return NULL;
}
else /* find by ordinal */
{
ordinal = LOWORD(funcName) - exports->Base;
if (snoop && name) /* need to find a name for it */
{
for (i = 0; i < exports->NumberOfNames; i++)
if (ordinals[i] == ordinal)
{
ename = RVA(name[i]);
break;
}
}
}
found:
if (ordinal >= exports->NumberOfFunctions)
{
TRACE(" ordinal %ld out of range!\n", ordinal + exports->Base );
return NULL;
}
addr = function[ordinal];
if (!addr) return NULL;
if ((addr < rva_start) || (addr >= rva_end))
{
FARPROC proc = RVA(addr);
if (snoop)
{
if (!ename) ename = "@";
proc = SNOOP_GetProcAddress(wm->module,ename,ordinal,proc);
}
return proc;
}
else /* forward entry point */
{
WINE_MODREF *wm_fw;
FARPROC proc;
char *forward = RVA(addr);
char module[256];
char *end = strchr(forward, '.');
if (!end) return NULL;
if (end - forward >= sizeof(module)) return NULL;
memcpy( module, forward, end - forward );
module[end-forward] = 0;
if (!(wm_fw = MODULE_FindModule( module )))
{
ERR("module not found for forward '%s' used by '%s'\n", forward, wm->modname );
return NULL;
}
if (!(proc = MODULE_GetProcAddress( wm_fw->module, end + 1, snoop )))
ERR("function not found for forward '%s' used by '%s'. If you are using builtin '%s', try using the native one instead.\n", forward, wm->modname, wm->modname );
return proc;
}
}
DWORD fixup_imports( WINE_MODREF *wm )
{
IMAGE_IMPORT_DESCRIPTOR *pe_imp;
unsigned int load_addr = wm->module;
int i,characteristics_detection=1;
IMAGE_IMPORT_DESCRIPTOR *imports = get_imports(wm->module);
/* first, count the number of imported non-internal modules */
pe_imp = imports;
if (!pe_imp) return 0;
/* OK, now dump the import list */
TRACE("Dumping imports list\n");
/* We assume that we have at least one import with !0 characteristics and
* detect broken imports with all characteristics 0 (notably Borland) and
* switch the detection off for them.
*/
for (i = 0; pe_imp->Name ; pe_imp++) {
if (!i && !pe_imp->u.Characteristics)
characteristics_detection = 0;
if (characteristics_detection && !pe_imp->u.Characteristics)
break;
i++;
}
if (!i) return 0; /* no imports */
/* Allocate module dependency list */
wm->nDeps = i;
wm->deps = HeapAlloc( GetProcessHeap(), 0, i*sizeof(WINE_MODREF *) );
/* load the imported modules. They are automatically
* added to the modref list of the process.
*/
for (i = 0, pe_imp = imports; pe_imp->Name ; pe_imp++) {
WINE_MODREF *wmImp;
IMAGE_IMPORT_BY_NAME *pe_name;
PIMAGE_THUNK_DATA import_list,thunk_list;
char *name = (char *) RVA(pe_imp->Name);
if (characteristics_detection && !pe_imp->u.Characteristics)
break;
wmImp = MODULE_LoadLibraryExA( name, 0, 0 );
if (!wmImp) {
ERR_(module)("Module (file) %s needed by %s not found\n", name, wm->filename);
return 1;
}
wm->deps[i++] = wmImp;
/* FIXME: forwarder entries ... */
if (pe_imp->u.OriginalFirstThunk != 0) { /* original MS style */
TRACE("Microsoft style imports used\n");
import_list =(PIMAGE_THUNK_DATA) RVA(pe_imp->u.OriginalFirstThunk);
thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
while (import_list->u1.Ordinal) {
if (IMAGE_SNAP_BY_ORDINAL(import_list->u1.Ordinal)) {
int ordinal = IMAGE_ORDINAL(import_list->u1.Ordinal);
TRACE("--- Ordinal %s,%d\n", name, ordinal);
thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
wmImp->module, (LPCSTR)ordinal, TRUE
);
if (!thunk_list->u1.Function) {
ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n",
name, ordinal, wm->filename );
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
} else { /* import by name */
pe_name = (PIMAGE_IMPORT_BY_NAME)RVA(import_list->u1.AddressOfData);
TRACE("--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint);
thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
wmImp->module, pe_name->Name, TRUE
);
if (!thunk_list->u1.Function) {
ERR("No implementation for %s.%d(%s) imported from %s, setting to 0xdeadbeef\n",
name,pe_name->Hint,pe_name->Name,wm->filename);
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
}
import_list++;
thunk_list++;
}
} else { /* Borland style */
TRACE("Borland style imports used\n");
thunk_list = (PIMAGE_THUNK_DATA) RVA(pe_imp->FirstThunk);
while (thunk_list->u1.Ordinal) {
if (IMAGE_SNAP_BY_ORDINAL(thunk_list->u1.Ordinal)) {
/* not sure about this branch, but it seems to work */
int ordinal = IMAGE_ORDINAL(thunk_list->u1.Ordinal);
TRACE("--- Ordinal %s.%d\n",name,ordinal);
thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
wmImp->module, (LPCSTR) ordinal, TRUE
);
if (!thunk_list->u1.Function) {
ERR("No implementation for %s.%d imported from %s, setting to 0xdeadbeef\n",
name,ordinal, wm->filename);
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
} else {
pe_name=(PIMAGE_IMPORT_BY_NAME) RVA(thunk_list->u1.AddressOfData);
TRACE("--- %s %s.%d\n",
pe_name->Name,name,pe_name->Hint);
thunk_list->u1.Function=(PDWORD)MODULE_GetProcAddress(
wmImp->module, pe_name->Name, TRUE
);
if (!thunk_list->u1.Function) {
ERR("No implementation for %s.%d(%s) imported from %s, setting to 0xdeadbeef\n",
name, pe_name->Hint, pe_name->Name, wm->filename);
thunk_list->u1.Function = (PDWORD)0xdeadbeef;
}
}
thunk_list++;
}
}
}
return 0;
}
/***********************************************************************
* do_relocations
*
* Apply the relocations to a mapped PE image
*/
static int do_relocations( char *base, const IMAGE_NT_HEADERS *nt, const char *filename )
{
const IMAGE_DATA_DIRECTORY *dir;
const IMAGE_BASE_RELOCATION *rel;
int delta = base - (char *)nt->OptionalHeader.ImageBase;
dir = &nt->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
rel = (IMAGE_BASE_RELOCATION *)(base + dir->VirtualAddress);
WARN("Info: base relocations needed for %s\n", filename);
if (!dir->VirtualAddress || !dir->Size)
{
if (nt->OptionalHeader.ImageBase == 0x400000)
ERR("Standard load address for a Win32 program not available - patched kernel ?\n");
ERR( "FATAL: Need to relocate %s, but no relocation records present (%s). Try to run that file directly !\n",
filename,
(nt->FileHeader.Characteristics&IMAGE_FILE_RELOCS_STRIPPED)?
"stripped during link" : "unknown reason" );
return 0;
}
/* FIXME: If we need to relocate a system DLL (base > 2GB) we should
* really make sure that the *new* base address is also > 2GB.
* Some DLLs really check the MSB of the module handle :-/
*/
if ((nt->OptionalHeader.ImageBase & 0x80000000) && !((DWORD)base & 0x80000000))
ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
for ( ; ((char *)rel < base + dir->VirtualAddress + dir->Size) && rel->VirtualAddress;
rel = (IMAGE_BASE_RELOCATION*)((char*)rel + rel->SizeOfBlock))
{
char *page = base + rel->VirtualAddress;
int i, count = (rel->SizeOfBlock - 8) / sizeof(rel->TypeOffset);
if (!count) continue;
/* sanity checks */
if ((char *)rel + rel->SizeOfBlock > base + dir->VirtualAddress + dir->Size ||
page > base + nt->OptionalHeader.SizeOfImage)
{
ERR_(module)("invalid relocation %p,%lx,%ld at %p,%lx,%lx\n",
rel, rel->VirtualAddress, rel->SizeOfBlock,
base, dir->VirtualAddress, dir->Size );
return 0;
}
TRACE_(module)("%ld relocations for page %lx\n", rel->SizeOfBlock, rel->VirtualAddress);
/* patching in reverse order */
for (i = 0 ; i < count; i++)
{
int offset = rel->TypeOffset[i] & 0xFFF;
int type = rel->TypeOffset[i] >> 12;
switch(type)
{
case IMAGE_REL_BASED_ABSOLUTE:
break;
case IMAGE_REL_BASED_HIGH:
*(short*)(page+offset) += HIWORD(delta);
break;
case IMAGE_REL_BASED_LOW:
*(short*)(page+offset) += LOWORD(delta);
break;
case IMAGE_REL_BASED_HIGHLOW:
*(int*)(page+offset) += delta;
/* FIXME: if this is an exported address, fire up enhanced logic */
break;
default:
FIXME_(module)("Unknown/unsupported fixup type %d.\n", type);
break;
}
}
}
return 1;
}
/**********************************************************************
* PE_LoadImage
* Load one PE format DLL/EXE into memory
*
* Unluckily we can't just mmap the sections where we want them, for
* (at least) Linux does only support offsets which are page-aligned.
*
* BUT we have to map the whole image anyway, for Win32 programs sometimes
* want to access them. (HMODULE32 point to the start of it)
*/
HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, DWORD flags )
{
IMAGE_NT_HEADERS *nt;
HMODULE hModule;
HANDLE mapping;
void *base;
TRACE_(module)( "loading %s\n", filename );
mapping = CreateFileMappingA( hFile, NULL, SEC_IMAGE, 0, 0, NULL );
if (!mapping) return 0;
base = MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
CloseHandle( mapping );
if (!base) return 0;
hModule = (HMODULE)base;
if (flags & LOAD_LIBRARY_AS_DATAFILE) return hModule; /* nothing else to do */
/* perform base relocation, if necessary */
nt = PE_HEADER( hModule );
if (hModule != nt->OptionalHeader.ImageBase)
{
if (!do_relocations( base, nt, filename ))
{
UnmapViewOfFile( base );
SetLastError( ERROR_BAD_EXE_FORMAT );
return 0;
}
}
/* virus check */
if (nt->OptionalHeader.AddressOfEntryPoint)
{
int i;
IMAGE_SECTION_HEADER *sec = (IMAGE_SECTION_HEADER*)((char*)&nt->OptionalHeader +
nt->FileHeader.SizeOfOptionalHeader);
for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
{
if (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress)
continue;
if (nt->OptionalHeader.AddressOfEntryPoint < sec->VirtualAddress+sec->SizeOfRawData)
break;
}
if (i == nt->FileHeader.NumberOfSections)
MESSAGE("VIRUS WARNING: PE module has an invalid entrypoint (0x%08lx) "
"outside all sections (possibly infected by Tchernobyl/SpaceFiller virus)!\n",
nt->OptionalHeader.AddressOfEntryPoint );
}
return hModule;
}
/**********************************************************************
* PE_CreateModule
*
* Create WINE_MODREF structure for loaded HMODULE32, link it into
* process modref_list, and fixup all imports.
*
* Note: hModule must point to a correctly allocated PE image,
* with base relocations applied; the 16-bit dummy module
* associated to hModule must already exist.
*
* Note: This routine must always be called in the context of the
* process that is to own the module to be created.
*
* Note: Assumes that the process critical section is held
*/
WINE_MODREF *PE_CreateModule( HMODULE hModule, LPCSTR filename, DWORD flags,
HANDLE hFile, BOOL builtin )
{
DWORD load_addr = (DWORD)hModule; /* for RVA */
IMAGE_NT_HEADERS *nt = PE_HEADER(hModule);
IMAGE_DATA_DIRECTORY *dir;
IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
WINE_MODREF *wm;
HMODULE16 hModule16;
/* Retrieve DataDirectory entries */
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
if (dir->Size)
pe_export = (PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress);
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXCEPTION;
if (dir->Size) FIXME("Exception directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY;
if (dir->Size) FIXME("Security directory ignored\n" );
/* IMAGE_DIRECTORY_ENTRY_BASERELOC handled in PE_LoadImage */
/* IMAGE_DIRECTORY_ENTRY_DEBUG handled by debugger */
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
if (dir->Size) FIXME("Global Pointer (MIPS) ignored\n" );
/* IMAGE_DIRECTORY_ENTRY_TLS handled in PE_TlsInit */
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG;
if (dir->Size) FIXME("Load Configuration directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT;
if (dir->Size) TRACE("Bound Import directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT;
if (dir->Size) TRACE("Import Address Table directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT;
if (dir->Size)
{
TRACE("Delayed import, stub calls LoadLibrary\n" );
/*
* Nothing to do here.
*/
#ifdef ImgDelayDescr
/*
* This code is useful to observe what the heck is going on.
*/
{
ImgDelayDescr *pe_delay = NULL;
pe_delay = (PImgDelayDescr)RVA(dir->VirtualAddress);
TRACE_(delayhlp)("pe_delay->grAttrs = %08x\n", pe_delay->grAttrs);
TRACE_(delayhlp)("pe_delay->szName = %s\n", pe_delay->szName);
TRACE_(delayhlp)("pe_delay->phmod = %08x\n", pe_delay->phmod);
TRACE_(delayhlp)("pe_delay->pIAT = %08x\n", pe_delay->pIAT);
TRACE_(delayhlp)("pe_delay->pINT = %08x\n", pe_delay->pINT);
TRACE_(delayhlp)("pe_delay->pBoundIAT = %08x\n", pe_delay->pBoundIAT);
TRACE_(delayhlp)("pe_delay->pUnloadIAT = %08x\n", pe_delay->pUnloadIAT);
TRACE_(delayhlp)("pe_delay->dwTimeStamp = %08x\n", pe_delay->dwTimeStamp);
}
#endif /* ImgDelayDescr */
}
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR;
if (dir->Size) FIXME("Unknown directory 14 ignored\n" );
dir = nt->OptionalHeader.DataDirectory+15;
if (dir->Size) FIXME("Unknown directory 15 ignored\n" );
/* Create 16-bit dummy module */
if ((hModule16 = MODULE_CreateDummyModule( filename, hModule )) < 32)
{
SetLastError( (DWORD)hModule16 ); /* This should give the correct error */
return NULL;
}
/* Allocate and fill WINE_MODREF */
if (!(wm = MODULE_AllocModRef( hModule, filename )))
{
FreeLibrary16( hModule16 );
return NULL;
}
wm->hDummyMod = hModule16;
if ( builtin )
{
NE_MODULE *pModule = (NE_MODULE *)GlobalLock16( hModule16 );
pModule->flags |= NE_FFLAGS_BUILTIN;
wm->flags |= WINE_MODREF_INTERNAL;
}
if ( flags & DONT_RESOLVE_DLL_REFERENCES )
wm->flags |= WINE_MODREF_DONT_RESOLVE_REFS;
wm->find_export = PE_FindExportedFunction;
/* Dump Exports */
if ( pe_export )
dump_exports( hModule );
/* Fixup Imports */
if (!(wm->flags & WINE_MODREF_DONT_RESOLVE_REFS) && fixup_imports( wm ))
{
/* remove entry from modref chain */
if ( !wm->prev )
MODULE_modref_list = wm->next;
else
wm->prev->next = wm->next;
if ( wm->next ) wm->next->prev = wm->prev;
wm->next = wm->prev = NULL;
/* FIXME: there are several more dangling references
* left. Including dlls loaded by this dll before the
* failed one. Unrolling is rather difficult with the
* current structure and we can leave it them lying
* around with no problems, so we don't care.
* As these might reference our wm, we don't free it.
*/
return NULL;
}
if (pe_export)
SNOOP_RegisterDLL( hModule, wm->modname, pe_export->NumberOfFunctions );
/* Send DLL load event */
/* we don't need to send a dll event for the main exe */
if (nt->FileHeader.Characteristics & IMAGE_FILE_DLL)
{
SERVER_START_REQ
{
struct load_dll_request *req = server_alloc_req( sizeof(*req), 0 );
req->handle = hFile;
req->base = (void *)hModule;
req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
req->dbg_size = nt->FileHeader.NumberOfSymbols;
req->name = &wm->filename;
server_call_noerr( REQ_LOAD_DLL );
}
SERVER_END_REQ;
}
return wm;
}
/******************************************************************************
* The PE Library Loader frontend.
* FIXME: handle the flags.
*/
WINE_MODREF *PE_LoadLibraryExA (LPCSTR name, DWORD flags)
{
HMODULE hModule32;
WINE_MODREF *wm;
HANDLE hFile;
hFile = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, 0 );
if ( hFile == INVALID_HANDLE_VALUE ) return NULL;
/* Load PE module */
hModule32 = PE_LoadImage( hFile, name, flags );
if (!hModule32)
{
CloseHandle( hFile );
return NULL;
}
/* Create 32-bit MODREF */
if ( !(wm = PE_CreateModule( hModule32, name, flags, hFile, FALSE )) )
{
ERR( "can't load %s\n", name );
CloseHandle( hFile );
SetLastError( ERROR_OUTOFMEMORY );
return NULL;
}
CloseHandle( hFile );
return wm;
}
/* Called if the library is loaded or freed.
* NOTE: if a thread attaches a DLL, the current thread will only do
* DLL_PROCESS_ATTACH. Only new created threads do DLL_THREAD_ATTACH
* (SDK)
*/
typedef DWORD CALLBACK(*DLLENTRYPROC)(HMODULE,DWORD,LPVOID);
BOOL PE_InitDLL( HMODULE module, DWORD type, LPVOID lpReserved )
{
BOOL retv = TRUE;
IMAGE_NT_HEADERS *nt = PE_HEADER(module);
/* Is this a library? And has it got an entrypoint? */
if ((nt->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
(nt->OptionalHeader.AddressOfEntryPoint))
{
DLLENTRYPROC entry = (void*)((char*)module + nt->OptionalHeader.AddressOfEntryPoint);
TRACE_(relay)("CallTo32(entryproc=%p,module=%08x,type=%ld,res=%p)\n",
entry, module, type, lpReserved );
retv = entry( module, type, lpReserved );
}
return retv;
}
/************************************************************************
* PE_InitTls (internal)
*
* If included, initialises the thread local storages of modules.
* Pointers in those structs are not RVAs but real pointers which have been
* relocated by do_relocations() already.
*/
static LPVOID
_fixup_address(PIMAGE_OPTIONAL_HEADER opt,int delta,LPVOID addr) {
if ( ((DWORD)addr>opt->ImageBase) &&
((DWORD)addr<opt->ImageBase+opt->SizeOfImage)
)
/* the address has not been relocated! */
return (LPVOID)(((DWORD)addr)+delta);
else
/* the address has been relocated already */
return addr;
}
void PE_InitTls( void )
{
WINE_MODREF *wm;
IMAGE_NT_HEADERS *peh;
DWORD size,datasize;
LPVOID mem;
PIMAGE_TLS_DIRECTORY pdir;
int delta;
for (wm = MODULE_modref_list;wm;wm=wm->next) {
peh = PE_HEADER(wm->module);
delta = wm->module - peh->OptionalHeader.ImageBase;
if (!peh->OptionalHeader.DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress)
continue;
pdir = (LPVOID)(wm->module + peh->OptionalHeader.
DataDirectory[IMAGE_FILE_THREAD_LOCAL_STORAGE].VirtualAddress);
if ( wm->tlsindex == -1 ) {
LPDWORD xaddr;
wm->tlsindex = TlsAlloc();
xaddr = _fixup_address(&(peh->OptionalHeader),delta,
pdir->AddressOfIndex
);
*xaddr=wm->tlsindex;
}
datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
size = datasize + pdir->SizeOfZeroFill;
mem=VirtualAlloc(0,size,MEM_RESERVE|MEM_COMMIT,PAGE_READWRITE);
memcpy(mem,_fixup_address(&(peh->OptionalHeader),delta,(LPVOID)pdir->StartAddressOfRawData),datasize);
if (pdir->AddressOfCallBacks) {
PIMAGE_TLS_CALLBACK *cbs;
cbs = _fixup_address(&(peh->OptionalHeader),delta,pdir->AddressOfCallBacks);
if (*cbs)
FIXME("TLS Callbacks aren't going to be called\n");
}
TlsSetValue( wm->tlsindex, mem );
}
}
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