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mpv/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.
* - Sometimes, we can't use Linux mmap() to mmap() the images directly.
*
* The problem is, that there is not direct 1:1 mapping from a diskimage and
* a memoryimage. The headers at the start are mapped linear, but the sections
* are not. Older x86 pe binaries are 512 byte aligned in file and 4096 byte
* aligned in memory. Linux likes them 4096 byte aligned in memory (due to
* x86 pagesize, this cannot be fixed without a rather large kernel rewrite)
* and 'blocksize' file-aligned (offsets). Since we have 512/1024/2048 (CDROM)
* and other byte blocksizes, we can't always do this. We *can* do this for
* newer pe binaries produced by MSVC 5 and later, since they are also aligned
* to 4096 byte boundaries on disk.
*/
#include "config.h"
#include <errno.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
#include "wine/windef.h"
#include "wine/winbase.h"
#include "wine/winerror.h"
#include "wine/heap.h"
#include "wine/pe_image.h"
#include "wine/module.h"
#include "wine/debugtools.h"
#include "ext.h"
#include "win32.h"
#define RVA(x) ((void *)((char *)load_addr+(unsigned int)(x)))
#define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
extern void* LookupExternal(const char* library, int ordinal);
extern void* LookupExternalByName(const char* library, const char* name);
static void dump_exports( HMODULE hModule )
{
char *Module;
unsigned int i, j;
u_short *ordinal;
u_long *function,*functions;
u_char **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=(u_short*) RVA(pe_exports->AddressOfNameOrdinals);
functions=function=(u_long*) RVA(pe_exports->AddressOfFunctions);
name=(u_char**) RVA(pe_exports->AddressOfNames);
TRACE(" Ord RVA Addr Name\n" );
for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
{
if (!*function) continue;
if (TRACE_ON(win32))
{
DPRINTF( "%4ld %08lx %p", i + pe_exports->Base, *function, RVA(*function) );
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
*/
FARPROC PE_FindExportedFunction(
WINE_MODREF *wm,
LPCSTR funcName,
WIN_BOOL snoop )
{
u_short * ordinals;
u_long * function;
u_char ** name;
const char *ename = NULL;
int i, ordinal;
PE_MODREF *pem = &(wm->binfmt.pe);
IMAGE_EXPORT_DIRECTORY *exports = pem->pe_export;
unsigned int load_addr = wm->module;
u_long rva_start, rva_end, addr;
char * forward;
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,pem);
return NULL;
}
ordinals= (u_short*) RVA(exports->AddressOfNameOrdinals);
function= (u_long*) RVA(exports->AddressOfFunctions);
name = (u_char **) 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))
{
int min = 0, max = exports->NumberOfNames - 1;
while (min <= max)
{
int res, pos = (min + max) / 2;
ename = (const char*) RVA(name[pos]);
if (!(res = strcmp( ename, funcName )))
{
ordinal = ordinals[pos];
goto found;
}
if (res > 0) max = pos - 1;
else min = pos + 1;
}
for (i = 0; i < exports->NumberOfNames; i++)
{
ename = (const char*) 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
{
ordinal = LOWORD(funcName) - exports->Base;
if (snoop && name)
{
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);
TRACE("SNOOP_GetProcAddress n/a\n");
}
return proc;
}
else
{
WINE_MODREF *wm;
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 = MODULE_FindModule( module )))
{
ERR("module not found for forward '%s'\n", forward );
return NULL;
}
return MODULE_GetProcAddress( wm->module, end + 1, snoop );
}
}
static DWORD fixup_imports( WINE_MODREF *wm )
{
IMAGE_IMPORT_DESCRIPTOR *pe_imp;
PE_MODREF *pem;
unsigned int load_addr = wm->module;
int i,characteristics_detection=1;
char *modname;
assert(wm->type==MODULE32_PE);
pem = &(wm->binfmt.pe);
if (pem->pe_export)
modname = (char*) RVA(pem->pe_export->Name);
else
modname = "<unknown>";
TRACE("Dumping imports list\n");
pe_imp = pem->pe_import;
if (!pe_imp) return 0;
/* We assume that we have at least one import with !0 characteristics and
* detect broken imports with all characteristsics 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;
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 = pem->pe_import; 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;
//#warning FIXME: here we should fill imports
TRACE("Loading imports for %s.dll\n", name);
if (pe_imp->u.OriginalFirstThunk != 0) {
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=LookupExternal(name, ordinal);
} else {
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=LookupExternalByName(name, pe_name->Name);
}
import_list++;
thunk_list++;
}
} else {
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)) {
int ordinal = IMAGE_ORDINAL(thunk_list->u1.Ordinal);
TRACE("--- Ordinal %s.%d\n",name,ordinal);
thunk_list->u1.Function=LookupExternal(
name, ordinal);
} 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=LookupExternalByName(
name, pe_name->Name);
}
thunk_list++;
}
}
}
return 0;
}
static int calc_vma_size( HMODULE hModule )
{
int i,vma_size = 0;
IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(hModule);
TRACE("Dump of segment table\n");
TRACE(" Name VSz Vaddr SzRaw Fileadr *Reloc *Lineum #Reloc #Linum Char\n");
for (i = 0; i< PE_HEADER(hModule)->FileHeader.NumberOfSections; i++)
{
TRACE("%8s: %4.4lx %8.8lx %8.8lx %8.8lx %8.8lx %8.8lx %4.4x %4.4x %8.8lx\n",
pe_seg->Name,
pe_seg->Misc.VirtualSize,
pe_seg->VirtualAddress,
pe_seg->SizeOfRawData,
pe_seg->PointerToRawData,
pe_seg->PointerToRelocations,
pe_seg->PointerToLinenumbers,
pe_seg->NumberOfRelocations,
pe_seg->NumberOfLinenumbers,
pe_seg->Characteristics);
vma_size=max(vma_size, pe_seg->VirtualAddress+pe_seg->SizeOfRawData);
vma_size=max(vma_size, pe_seg->VirtualAddress+pe_seg->Misc.VirtualSize);
pe_seg++;
}
return vma_size;
}
static void do_relocations( unsigned int load_addr, IMAGE_BASE_RELOCATION *r )
{
int delta = load_addr - PE_HEADER(load_addr)->OptionalHeader.ImageBase;
int hdelta = (delta >> 16) & 0xFFFF;
int ldelta = delta & 0xFFFF;
if(delta == 0)
return;
while(r->VirtualAddress)
{
char *page = (char*) RVA(r->VirtualAddress);
int count = (r->SizeOfBlock - 8)/2;
int i;
TRACE_(fixup)("%x relocations for page %lx\n",
count, r->VirtualAddress);
for(i=0;i<count;i++)
{
int offset = r->TypeOffset[i] & 0xFFF;
int type = r->TypeOffset[i] >> 12;
// TRACE_(fixup)("patching %x type %x\n", offset, type);
switch(type)
{
case IMAGE_REL_BASED_ABSOLUTE: break;
case IMAGE_REL_BASED_HIGH:
*(short*)(page+offset) += hdelta;
break;
case IMAGE_REL_BASED_LOW:
*(short*)(page+offset) += ldelta;
break;
case IMAGE_REL_BASED_HIGHLOW:
*(int*)(page+offset) += delta;
break;
case IMAGE_REL_BASED_HIGHADJ:
FIXME("Don't know what to do with IMAGE_REL_BASED_HIGHADJ\n");
break;
case IMAGE_REL_BASED_MIPS_JMPADDR:
FIXME("Is this a MIPS machine ???\n");
break;
default:
FIXME("Unknown fixup type\n");
break;
}
}
r = (IMAGE_BASE_RELOCATION*)((char*)r + r->SizeOfBlock);
}
}
/**********************************************************************
* 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( int handle, LPCSTR filename, WORD *version )
{
HMODULE hModule;
HANDLE mapping;
IMAGE_NT_HEADERS *nt;
IMAGE_SECTION_HEADER *pe_sec;
IMAGE_DATA_DIRECTORY *dir;
BY_HANDLE_FILE_INFORMATION bhfi;
int i, rawsize, lowest_va, vma_size, file_size = 0;
DWORD load_addr = 0, aoep, reloc = 0;
// struct get_read_fd_request *req = get_req_buffer();
int unix_handle = handle;
int page_size = getpagesize();
// if ( GetFileInformationByHandle( hFile, &bhfi ) )
// file_size = bhfi.nFileSizeLow;
file_size=lseek(handle, 0, SEEK_END);
lseek(handle, 0, SEEK_SET);
//#warning fix CreateFileMappingA
mapping = CreateFileMappingA( handle, NULL, PAGE_READONLY | SEC_COMMIT,
0, 0, NULL );
if (!mapping)
{
WARN("CreateFileMapping error %ld\n", GetLastError() );
return 0;
}
// hModule = (HMODULE)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
hModule=(HMODULE)mapping;
// CloseHandle( mapping );
if (!hModule)
{
WARN("MapViewOfFile error %ld\n", GetLastError() );
return 0;
}
if ( *(WORD*)hModule !=IMAGE_DOS_SIGNATURE)
{
WARN("%s image doesn't have DOS signature, but 0x%04x\n", filename,*(WORD*)hModule);
goto error;
}
nt = PE_HEADER( hModule );
if ( nt->Signature != IMAGE_NT_SIGNATURE )
{
WARN("%s image doesn't have PE signature, but 0x%08lx\n", filename, nt->Signature );
goto error;
}
if ( nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386 )
{
MESSAGE("Trying to load PE image for unsupported architecture (");
switch (nt->FileHeader.Machine)
{
case IMAGE_FILE_MACHINE_UNKNOWN: MESSAGE("Unknown"); break;
case IMAGE_FILE_MACHINE_I860: MESSAGE("I860"); break;
case IMAGE_FILE_MACHINE_R3000: MESSAGE("R3000"); break;
case IMAGE_FILE_MACHINE_R4000: MESSAGE("R4000"); break;
case IMAGE_FILE_MACHINE_R10000: MESSAGE("R10000"); break;
case IMAGE_FILE_MACHINE_ALPHA: MESSAGE("Alpha"); break;
case IMAGE_FILE_MACHINE_POWERPC: MESSAGE("PowerPC"); break;
default: MESSAGE("Unknown-%04x", nt->FileHeader.Machine); break;
}
MESSAGE(")\n");
goto error;
}
pe_sec = PE_SECTIONS( hModule );
rawsize = 0; lowest_va = 0x10000;
for (i = 0; i < nt->FileHeader.NumberOfSections; i++)
{
if (lowest_va > pe_sec[i].VirtualAddress)
lowest_va = pe_sec[i].VirtualAddress;
if (pe_sec[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
continue;
if (pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData > rawsize)
rawsize = pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData;
}
if ( file_size && file_size < rawsize )
{
ERR("PE module is too small (header: %d, filesize: %d), "
"probably truncated download?\n",
rawsize, file_size );
goto error;
}
aoep = nt->OptionalHeader.AddressOfEntryPoint;
if (aoep && (aoep < lowest_va))
FIXME("VIRUS WARNING: '%s' has an invalid entrypoint (0x%08lx) "
"below the first virtual address (0x%08x) "
"(possibly infected by Tchernobyl/SpaceFiller virus)!\n",
filename, aoep, lowest_va );
/* FIXME: Hack! While we don't really support shared sections yet,
* this checks for those special cases where the whole DLL
* consists only of shared sections and is mapped into the
* shared address space > 2GB. In this case, we assume that
* the module got mapped at its base address. Thus we simply
* check whether the module has actually been mapped there
* and use it, if so. This is needed to get Win95 USER32.DLL
* to work (until we support shared sections properly).
*/
if ( nt->OptionalHeader.ImageBase & 0x80000000 )
{
HMODULE sharedMod = (HMODULE)nt->OptionalHeader.ImageBase;
IMAGE_NT_HEADERS *sharedNt = (PIMAGE_NT_HEADERS)
( (LPBYTE)sharedMod + ((LPBYTE)nt - (LPBYTE)hModule) );
/* Well, this check is not really comprehensive,
but should be good enough for now ... */
if ( !IsBadReadPtr( (LPBYTE)sharedMod, sizeof(IMAGE_DOS_HEADER) )
&& memcmp( (LPBYTE)sharedMod, (LPBYTE)hModule, sizeof(IMAGE_DOS_HEADER) ) == 0
&& !IsBadReadPtr( sharedNt, sizeof(IMAGE_NT_HEADERS) )
&& memcmp( sharedNt, nt, sizeof(IMAGE_NT_HEADERS) ) == 0 )
{
UnmapViewOfFile( (LPVOID)hModule );
return sharedMod;
}
}
load_addr = nt->OptionalHeader.ImageBase;
vma_size = calc_vma_size( hModule );
load_addr = (DWORD)VirtualAlloc( (void*)load_addr, vma_size,
MEM_RESERVE | MEM_COMMIT,
PAGE_EXECUTE_READWRITE );
if (load_addr == 0)
{
FIXME("We need to perform base relocations for %s\n", filename);
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BASERELOC;
if (dir->Size)
reloc = dir->VirtualAddress;
else
{
FIXME( "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" );
goto error;
}
/* 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 )
ERR( "Forced to relocate system DLL (base > 2GB). This is not good.\n" );
load_addr = (DWORD)VirtualAlloc( NULL, vma_size,
MEM_RESERVE | MEM_COMMIT,
PAGE_EXECUTE_READWRITE );
if (!load_addr) {
FIXME_(win32)(
"FATAL: Couldn't load module %s (out of memory, %d needed)!\n", filename, vma_size);
goto error;
}
}
TRACE("Load addr is %lx (base %lx), range %x\n",
load_addr, nt->OptionalHeader.ImageBase, vma_size );
TRACE_(segment)("Loading %s at %lx, range %x\n",
filename, load_addr, vma_size );
#if 0
*(PIMAGE_DOS_HEADER)load_addr = *(PIMAGE_DOS_HEADER)hModule;
*PE_HEADER( load_addr ) = *nt;
memcpy( PE_SECTIONS(load_addr), PE_SECTIONS(hModule),
sizeof(IMAGE_SECTION_HEADER) * nt->FileHeader.NumberOfSections );
memcpy( load_addr, hModule, lowest_fa );
#endif
if ((void*)FILE_dommap( handle, (void *)load_addr, 0, nt->OptionalHeader.SizeOfHeaders,
0, 0, PROT_EXEC | PROT_WRITE | PROT_READ,
MAP_PRIVATE | MAP_FIXED ) != (void*)load_addr)
{
ERR_(win32)( "Critical Error: failed to map PE header to necessary address.\n");
goto error;
}
pe_sec = PE_SECTIONS( hModule );
for (i = 0; i < nt->FileHeader.NumberOfSections; i++, pe_sec++)
{
if (!pe_sec->SizeOfRawData || !pe_sec->PointerToRawData) continue;
TRACE("%s: mmaping section %s at %p off %lx size %lx/%lx\n",
filename, pe_sec->Name, (void*)RVA(pe_sec->VirtualAddress),
pe_sec->PointerToRawData, pe_sec->SizeOfRawData, pe_sec->Misc.VirtualSize );
if ((void*)FILE_dommap( unix_handle, (void*)RVA(pe_sec->VirtualAddress),
0, pe_sec->SizeOfRawData, 0, pe_sec->PointerToRawData,
PROT_EXEC | PROT_WRITE | PROT_READ,
MAP_PRIVATE | MAP_FIXED ) != (void*)RVA(pe_sec->VirtualAddress))
{
ERR_(win32)( "Critical Error: failed to map PE section to necessary address.\n");
goto error;
}
if ((pe_sec->SizeOfRawData < pe_sec->Misc.VirtualSize) &&
(pe_sec->SizeOfRawData & (page_size-1)))
{
DWORD end = (pe_sec->SizeOfRawData & ~(page_size-1)) + page_size;
if (end > pe_sec->Misc.VirtualSize) end = pe_sec->Misc.VirtualSize;
TRACE("clearing %p - %p\n",
RVA(pe_sec->VirtualAddress) + pe_sec->SizeOfRawData,
RVA(pe_sec->VirtualAddress) + end );
memset( (char*)RVA(pe_sec->VirtualAddress) + pe_sec->SizeOfRawData, 0,
end - pe_sec->SizeOfRawData );
}
}
if ( reloc )
do_relocations( load_addr, (IMAGE_BASE_RELOCATION *)RVA(reloc) );
*version = ( (nt->OptionalHeader.MajorSubsystemVersion & 0xff) << 8 )
| (nt->OptionalHeader.MinorSubsystemVersion & 0xff);
UnmapViewOfFile( (LPVOID)hModule );
return (HMODULE)load_addr;
error:
if (unix_handle != -1) close( unix_handle );
if (load_addr)
VirtualFree( (LPVOID)load_addr, 0, MEM_RELEASE );
UnmapViewOfFile( (LPVOID)hModule );
return 0;
}
/**********************************************************************
* 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.
*/
WINE_MODREF *PE_CreateModule( HMODULE hModule,
LPCSTR filename, DWORD flags, WIN_BOOL builtin )
{
DWORD load_addr = (DWORD)hModule;
IMAGE_NT_HEADERS *nt = PE_HEADER(hModule);
IMAGE_DATA_DIRECTORY *dir;
IMAGE_IMPORT_DESCRIPTOR *pe_import = NULL;
IMAGE_EXPORT_DIRECTORY *pe_export = NULL;
IMAGE_RESOURCE_DIRECTORY *pe_resource = NULL;
WINE_MODREF *wm;
int result;
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_IMPORT;
if (dir->Size)
pe_import = (PIMAGE_IMPORT_DESCRIPTOR)RVA(dir->VirtualAddress);
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_RESOURCE;
if (dir->Size)
pe_resource = (PIMAGE_RESOURCE_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" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_DEBUG;
if (dir->Size) TRACE("Debug directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COPYRIGHT;
if (dir->Size) FIXME("Copyright string ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
if (dir->Size) FIXME("Global Pointer (MIPS) ignored\n" );
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
}
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" );
wm = (WINE_MODREF *)HeapAlloc( GetProcessHeap(),
HEAP_ZERO_MEMORY, sizeof(*wm) );
wm->module = hModule;
if ( builtin )
wm->flags |= WINE_MODREF_INTERNAL;
if ( flags & DONT_RESOLVE_DLL_REFERENCES )
wm->flags |= WINE_MODREF_DONT_RESOLVE_REFS;
if ( flags & LOAD_LIBRARY_AS_DATAFILE )
wm->flags |= WINE_MODREF_LOAD_AS_DATAFILE;
wm->type = MODULE32_PE;
wm->binfmt.pe.pe_export = pe_export;
wm->binfmt.pe.pe_import = pe_import;
wm->binfmt.pe.pe_resource = pe_resource;
wm->binfmt.pe.tlsindex = -1;
wm->filename = malloc(strlen(filename)+1);
strcpy(wm->filename, filename );
wm->modname = strrchr( wm->filename, '\\' );
if (!wm->modname) wm->modname = wm->filename;
else wm->modname++;
if ( pe_export )
dump_exports( hModule );
/* Fixup Imports */
if ( pe_import
&& !( wm->flags & WINE_MODREF_LOAD_AS_DATAFILE )
&& !( wm->flags & WINE_MODREF_DONT_RESOLVE_REFS )
&& fixup_imports( wm ) )
{
/* remove entry from modref chain */
return NULL;
}
return wm;
return wm;
}
/******************************************************************************
* The PE Library Loader frontend.
* FIXME: handle the flags.
*/
WINE_MODREF *PE_LoadLibraryExA (LPCSTR name, DWORD flags)
{
HMODULE hModule32;
WINE_MODREF *wm;
char filename[256];
int hFile;
WORD version = 0;
strncpy(filename, name, sizeof(filename));
hFile=open(filename, O_RDONLY);
if(hFile==-1)
return NULL;
hModule32 = PE_LoadImage( hFile, filename, &version );
if (!hModule32)
{
SetLastError( ERROR_OUTOFMEMORY );
return NULL;
}
if ( !(wm = PE_CreateModule( hModule32, filename, flags, FALSE )) )
{
ERR( "can't load %s\n", filename );
SetLastError( ERROR_OUTOFMEMORY );
return NULL;
}
close(hFile);
//printf("^^^^^^^^^^^^^^^^Alloc VM1 %p\n", wm);
return wm;
}
/*****************************************************************************
* PE_UnloadLibrary
*
* Unload the library unmapping the image and freeing the modref structure.
*/
void PE_UnloadLibrary(WINE_MODREF *wm)
{
TRACE(" unloading %s\n", wm->filename);
if (wm->filename)
free(wm->filename);
if (wm->short_filename)
free(wm->short_filename);
HeapFree( GetProcessHeap(), 0, wm->deps );
VirtualFree( (LPVOID)wm->module, 0, MEM_RELEASE );
HeapFree( GetProcessHeap(), 0, wm );
//printf("^^^^^^^^^^^^^^^^Free VM1 %p\n", wm);
}
/*****************************************************************************
* Load the PE main .EXE. All other loading is done by PE_LoadLibraryExA
* FIXME: this function should use PE_LoadLibraryExA, but currently can't
* due to the PROCESS_Create stuff.
*/
/*
* This is a dirty hack.
* The win32 DLLs contain an alloca routine, that first probes the soon
* to be allocated new memory *below* the current stack pointer in 4KByte
* increments. After the mem probing below the current %esp, the stack
* pointer is finally decremented to make room for the "alloca"ed memory.
* Maybe the probing code is intended to extend the stack on a windows box.
* Anyway, the linux kernel does *not* extend the stack by simply accessing
* memory below %esp; it segfaults.
* The extend_stack_for_dll_alloca() routine just preallocates a big chunk
* of memory on the stack, for use by the DLLs alloca routine.
* Added the noinline attribute as e.g. gcc 3.2.2 inlines this function
* in a way that breaks it.
*/
static void __attribute__((noinline)) extend_stack_for_dll_alloca(void)
{
#ifndef __FreeBSD__
volatile int* mem=alloca(0x20000);
*mem=0x1234;
#endif
}
/* 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)
*/
WIN_BOOL PE_InitDLL( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
{
WIN_BOOL retv = TRUE;
assert( wm->type == MODULE32_PE );
if ((PE_HEADER(wm->module)->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
(PE_HEADER(wm->module)->OptionalHeader.AddressOfEntryPoint)
) {
DLLENTRYPROC entry ;
entry = (void*)PE_FindExportedFunction(wm, "DllMain", 0);
if(entry==NULL)
entry = (void*)RVA_PTR( wm->module,OptionalHeader.AddressOfEntryPoint );
TRACE_(relay)("CallTo32(entryproc=%p,module=%08x,type=%ld,res=%p)\n",
entry, wm->module, type, lpReserved );
TRACE("Entering DllMain(");
switch(type)
{
case DLL_PROCESS_DETACH:
TRACE("DLL_PROCESS_DETACH) ");
break;
case DLL_PROCESS_ATTACH:
TRACE("DLL_PROCESS_ATTACH) ");
break;
case DLL_THREAD_DETACH:
TRACE("DLL_THREAD_DETACH) ");
break;
case DLL_THREAD_ATTACH:
TRACE("DLL_THREAD_ATTACH) ");
break;
}
TRACE("for %s\n", wm->filename);
extend_stack_for_dll_alloca();
retv = entry( wm->module, type, lpReserved );
}
return retv;
}
static LPVOID
_fixup_address(PIMAGE_OPTIONAL_HEADER opt,int delta,LPVOID addr) {
if ( ((DWORD)addr>opt->ImageBase) &&
((DWORD)addr<opt->ImageBase+opt->SizeOfImage)
)
return (LPVOID)(((DWORD)addr)+delta);
else
return addr;
}
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