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wine/loader/pe_image.c
Alexandre Julliard 0412cc55d2 Rewrote most of the import fixup code to avoid doing redundant work 
for every entry point. Moved it all to dlls/ntdll/loader.c.
Various optimizations in the other loader routines.
2003-04-05 05:16:11 +00:00

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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:/developr/MSDN/OctCD/PEFILE.ZIP
*
* 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
*/
/* 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 PE_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 "wine/server.h"
#include "wine/debug.h"
#include "ntdll_misc.h"
WINE_DEFAULT_DEBUG_CHANNEL(win32);
WINE_DECLARE_DEBUG_CHANNEL(module);
WINE_DECLARE_DEBUG_CHANNEL(relay);
/* convert PE image VirtualAddress to Real Address */
inline static void *get_rva( HMODULE module, DWORD va )
{
return (void *)((char *)module + va);
}
#define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
void dump_exports( HMODULE hModule )
{
char *Module;
int i, j;
WORD *ordinal;
DWORD *function,*functions;
DWORD *name;
IMAGE_EXPORT_DIRECTORY *pe_exports;
DWORD rva_start, size;
pe_exports = RtlImageDirectoryEntryToData( hModule, TRUE, IMAGE_DIRECTORY_ENTRY_EXPORT, &size );
rva_start = (char *)pe_exports - (char *)hModule;
Module = get_rva(hModule, pe_exports->Name);
DPRINTF("*******EXPORT DATA*******\n");
DPRINTF("Module name is %s, %ld functions, %ld names\n",
Module, pe_exports->NumberOfFunctions, pe_exports->NumberOfNames);
ordinal = get_rva(hModule, pe_exports->AddressOfNameOrdinals);
functions = function = get_rva(hModule, pe_exports->AddressOfFunctions);
name = get_rva(hModule, pe_exports->AddressOfNames);
DPRINTF(" Ord RVA Addr Name\n" );
for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
{
if (!*function) continue; /* No such function */
DPRINTF( "%4ld %08lx %p", i + pe_exports->Base, *function, get_rva(hModule, *function) );
/* Check if we have a name for it */
for (j = 0; j < pe_exports->NumberOfNames; j++)
if (ordinal[j] == i)
{
DPRINTF( " %s", (char*)get_rva(hModule, name[j]) );
break;
}
if ((*function >= rva_start) && (*function <= rva_start + size))
DPRINTF(" (forwarded -> %s)", (char *)get_rva(hModule, *function));
DPRINTF("\n");
}
}
/**********************************************************************
* 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. (HMODULE points to the start of it)
*/
HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, DWORD flags )
{
IMAGE_NT_HEADERS *nt;
HMODULE hModule;
HANDLE mapping;
void *base = NULL;
OBJECT_ATTRIBUTES attr;
LARGE_INTEGER lg_int;
DWORD len = 0;
NTSTATUS nts;
TRACE_(module)( "loading %s\n", filename );
attr.Length = sizeof(attr);
attr.RootDirectory = 0;
attr.ObjectName = NULL;
attr.Attributes = 0;
attr.SecurityDescriptor = NULL;
attr.SecurityQualityOfService = NULL;
lg_int.QuadPart = 0;
if (NtCreateSection( &mapping,
STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ,
&attr, &lg_int, 0, SEC_IMAGE, hFile ) != STATUS_SUCCESS)
return 0;
nts = NtMapViewOfSection( mapping, GetCurrentProcess(),
&base, 0, 0, &lg_int, &len, ViewShare, 0,
PAGE_READONLY );
NtClose( mapping );
if (nts != STATUS_SUCCESS) return 0;
/* virus check */
hModule = (HMODULE)base;
nt = RtlImageNtHeader( hModule );
if (nt->OptionalHeader.AddressOfEntryPoint)
{
if (!RtlImageRvaToSection( nt, hModule, nt->OptionalHeader.AddressOfEntryPoint ))
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 HMODULE, 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 )
{
IMAGE_NT_HEADERS *nt;
IMAGE_DATA_DIRECTORY *dir;
IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
WINE_MODREF *wm;
HMODULE16 hModule16;
/* Retrieve DataDirectory entries */
nt = RtlImageNtHeader(hModule);
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
if (dir->Size) pe_export = get_rva(hModule, 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 = get_rva(hModule, dir->VirtualAddress);
TRACE("pe_delay->grAttrs = %08x\n", pe_delay->grAttrs);
TRACE("pe_delay->szName = %s\n", pe_delay->szName);
TRACE("pe_delay->phmod = %08x\n", pe_delay->phmod);
TRACE("pe_delay->pIAT = %08x\n", pe_delay->pIAT);
TRACE("pe_delay->pINT = %08x\n", pe_delay->pINT);
TRACE("pe_delay->pBoundIAT = %08x\n", pe_delay->pBoundIAT);
TRACE("pe_delay->pUnloadIAT = %08x\n", pe_delay->pUnloadIAT);
TRACE("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->ldr.Flags |= LDR_WINE_INTERNAL;
}
else if ( flags & DONT_RESOLVE_DLL_REFERENCES )
wm->ldr.Flags |= LDR_DONT_RESOLVE_REFS;
/* Dump Exports */
if (pe_export && TRACE_ON(win32))
dump_exports( hModule );
/* Fixup Imports */
if (!(wm->ldr.Flags & LDR_DONT_RESOLVE_REFS) &&
PE_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 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 (!builtin && pe_export)
SNOOP_RegisterDLL( hModule, wm->modname, pe_export->Base, 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)
{
if (hFile)
{
UINT drive_type = GetDriveTypeA( wm->short_filename );
/* don't keep the file handle open on removable media */
if (drive_type == DRIVE_REMOVABLE || drive_type == DRIVE_CDROM) hFile = 0;
}
SERVER_START_REQ( load_dll )
{
req->handle = hFile;
req->base = (void *)hModule;
req->size = nt->OptionalHeader.SizeOfImage;
req->dbg_offset = nt->FileHeader.PointerToSymbolTable;
req->dbg_size = nt->FileHeader.NumberOfSymbols;
req->name = &wm->filename;
wine_server_add_data( req, wm->filename, strlen(wm->filename) );
wine_server_call( req );
}
SERVER_END_REQ;
}
return wm;
}
/******************************************************************************
* The PE Library Loader frontend.
* FIXME: handle the flags.
*/
NTSTATUS PE_LoadLibraryExA (LPCSTR name, DWORD flags, WINE_MODREF** pwm)
{
HMODULE hModule32;
HANDLE hFile;
hFile = CreateFileA( name, GENERIC_READ, FILE_SHARE_READ,
NULL, OPEN_EXISTING, 0, 0 );
if ( hFile == INVALID_HANDLE_VALUE )
{
/* keep it that way until we transform CreateFile into NtCreateFile */
return (GetLastError() == ERROR_FILE_NOT_FOUND) ?
STATUS_NO_SUCH_FILE : STATUS_INTERNAL_ERROR;
}
/* Load PE module */
hModule32 = PE_LoadImage( hFile, name, flags );
if (!hModule32)
{
CloseHandle( hFile );
return STATUS_INTERNAL_ERROR;
}
/* Create 32-bit MODREF */
if ( !(*pwm = PE_CreateModule( hModule32, name, flags, hFile, FALSE )) )
{
ERR( "can't load %s\n", name );
CloseHandle( hFile );
return STATUS_NO_MEMORY; /* FIXME */
}
CloseHandle( hFile );
return STATUS_SUCCESS;
}
/************************************************************************
* 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,dirsize;
LPVOID mem;
PIMAGE_TLS_DIRECTORY pdir;
int delta;
for (wm = MODULE_modref_list;wm;wm=wm->next) {
peh = RtlImageNtHeader(wm->ldr.BaseAddress);
pdir = RtlImageDirectoryEntryToData( wm->ldr.BaseAddress, TRUE,
IMAGE_DIRECTORY_ENTRY_TLS, &dirsize );
if (!pdir) continue;
delta = (char *)wm->ldr.BaseAddress - (char *)peh->OptionalHeader.ImageBase;
if ( wm->ldr.TlsIndex == -1 ) {
LPDWORD xaddr;
wm->ldr.TlsIndex = TlsAlloc();
xaddr = _fixup_address(&(peh->OptionalHeader),delta,
pdir->AddressOfIndex
);
*xaddr=wm->ldr.TlsIndex;
}
datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
size = datasize + pdir->SizeOfZeroFill;
NtAllocateVirtualMemory( GetCurrentProcess(), &mem, NULL, &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->ldr.TlsIndex, mem );
}
}
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