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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.
* - No, you (usually) cannot 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. For x86 the sections 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 do this. However, this could be less
* difficult to support... (See mm/filemap.c).
*/
#include <errno.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include "windef.h"
#include "winbase.h"
#include "callback.h"
#include "file.h"
#include "heap.h"
#include "neexe.h"
#include "peexe.h"
#include "process.h"
#include "thread.h"
#include "pe_image.h"
#include "module.h"
#include "global.h"
#include "task.h"
#include "snoop.h"
#include "debug.h"
/* convert PE image VirtualAddress to Real Address */
#define RVA(x) ((unsigned int)load_addr+(unsigned int)(x))
#define AdjustPtr(ptr,delta) ((char *)(ptr) + (delta))
void dump_exports( HMODULE hModule )
{
char *Module;
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(win32,"*******EXPORT DATA*******\n");
TRACE(win32,"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(win32," Ord RVA Addr Name\n" );
for (i=0;i<pe_exports->NumberOfFunctions;i++, function++)
{
if (!*function) continue; /* No such function */
if (TRACE_ON(win32)){
dbg_decl_str(win32, 1024);
dsprintf(win32,"%4ld %08lx %08x",
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)
dsprintf(win32, " %s", (char*)RVA(name[j]) );
if ((*function >= rva_start) && (*function <= rva_end))
dsprintf(win32, " (forwarded -> %s)", (char *)RVA(*function));
TRACE(win32,"%s\n", dbg_str(win32));
}
}
}
/* 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, /* [in] WINE modreference */
LPCSTR funcName, /* [in] function name */
BOOL snoop )
{
u_short * ordinal;
u_long * function;
u_char ** name, *ename;
int i;
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(win32,"(%s)\n",funcName);
else
TRACE(win32,"(%d)\n",(int)funcName);
if (!exports) {
/* Not a fatal problem, some apps do
* GetProcAddress(0,"RegisterPenApp") which triggers this
* case.
*/
WARN(win32,"Module %08x(%s)/MODREF %p doesn't have a exports table.\n",wm->module,wm->modname,pem);
return NULL;
}
ordinal = (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)) {
for(i=0; i<exports->NumberOfNames; i++) {
ename=(char*)RVA(*name);
if(!strcmp(ename,funcName))
{
addr = function[*ordinal];
if (!addr) return NULL;
if ((addr < rva_start) || (addr >= rva_end))
return snoop? SNOOP_GetProcAddress(wm->module,ename,*ordinal,(FARPROC)RVA(addr))
: (FARPROC)RVA(addr);
forward = (char *)RVA(addr);
break;
}
ordinal++;
name++;
}
} else {
int i;
if (LOWORD(funcName)-exports->Base > exports->NumberOfFunctions) {
TRACE(win32," ordinal %d out of range!\n",
LOWORD(funcName));
return NULL;
}
addr = function[(int)funcName-exports->Base];
if (!addr) return NULL;
ename = "";
if (name) {
for (i=0;i<exports->NumberOfNames;i++) {
ename = (char*)RVA(*name);
if (*ordinal == LOWORD(funcName)-exports->Base)
break;
ordinal++;
name++;
}
if (i==exports->NumberOfNames)
ename = "";
}
if ((addr < rva_start) || (addr >= rva_end))
return snoop? SNOOP_GetProcAddress(wm->module,ename,(DWORD)funcName-exports->Base,(FARPROC)RVA(addr))
: (FARPROC)RVA(addr);
forward = (char *)RVA(addr);
}
if (forward)
{
HMODULE hMod;
char module[256];
char *end = strchr(forward, '.');
if (!end) return NULL;
assert(end-forward<256);
strncpy(module, forward, (end - forward));
module[end-forward] = 0;
hMod = MODULE_FindModule( module );
assert(hMod);
return MODULE_GetProcAddress( hMod, end + 1, snoop );
}
return NULL;
}
DWORD fixup_imports( WINE_MODREF *wm )
{
IMAGE_IMPORT_DESCRIPTOR *pe_imp;
WINE_MODREF *xwm;
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>";
/* OK, now dump the import list */
TRACE(win32, "Dumping imports list\n");
/* first, count the number of imported non-internal modules */
pe_imp = pem->pe_import;
if (!pe_imp)
ERR(win32, "no import directory????\n");
/* 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++;
}
/* 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 = pem->pe_import; pe_imp->Name ; pe_imp++) {
HMODULE hImpModule;
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;
/* don't use MODULE_Load, Win32 creates new task differently */
hImpModule = MODULE_LoadLibraryExA( name, 0, 0 );
if (!hImpModule) {
char *p,buffer[2000];
/* GetModuleFileName would use the wrong process, so don't use it */
strcpy(buffer,wm->shortname);
if (!(p = strrchr (buffer, '\\')))
p = buffer;
strcpy (p + 1, name);
hImpModule = MODULE_LoadLibraryExA( buffer, 0, 0 );
}
if (!hImpModule) {
ERR (module, "Module %s not found\n", name);
return 1;
}
xwm = MODULE32_LookupHMODULE( hImpModule );
assert( xwm );
wm->deps[i++] = xwm;
/* FIXME: forwarder entries ... */
if (pe_imp->u.OriginalFirstThunk != 0) { /* original MS style */
TRACE(win32, "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(win32, "--- Ordinal %s,%d\n", name, ordinal);
thunk_list->u1.Function=MODULE_GetProcAddress(
hImpModule, (LPCSTR)ordinal, TRUE
);
if (!thunk_list->u1.Function) {
ERR(win32,"No implementation for %s.%d, setting to 0xdeadbeef\n",
name, ordinal);
thunk_list->u1.Function = (FARPROC)0xdeadbeef;
}
} else { /* import by name */
pe_name = (PIMAGE_IMPORT_BY_NAME)RVA(import_list->u1.AddressOfData);
TRACE(win32, "--- %s %s.%d\n", pe_name->Name, name, pe_name->Hint);
thunk_list->u1.Function=MODULE_GetProcAddress(
hImpModule, pe_name->Name, TRUE
);
if (!thunk_list->u1.Function) {
ERR(win32,"No implementation for %s.%d(%s), setting to 0xdeadbeef\n",
name,pe_name->Hint,pe_name->Name);
thunk_list->u1.Function = (FARPROC)0xdeadbeef;
}
}
import_list++;
thunk_list++;
}
} else { /* Borland style */
TRACE(win32, "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(win32,"--- Ordinal %s.%d\n",name,ordinal);
thunk_list->u1.Function=MODULE_GetProcAddress(
hImpModule, (LPCSTR) ordinal, TRUE
);
if (!thunk_list->u1.Function) {
ERR(win32, "No implementation for %s.%d, setting to 0xdeadbeef\n",
name,ordinal);
thunk_list->u1.Function = (FARPROC)0xdeadbeef;
}
} else {
pe_name=(PIMAGE_IMPORT_BY_NAME) RVA(thunk_list->u1.AddressOfData);
TRACE(win32,"--- %s %s.%d\n",
pe_name->Name,name,pe_name->Hint);
thunk_list->u1.Function=MODULE_GetProcAddress(
hImpModule, pe_name->Name, TRUE
);
if (!thunk_list->u1.Function) {
ERR(win32, "No implementation for %s.%d, setting to 0xdeadbeef\n",
name, pe_name->Hint);
thunk_list->u1.Function = (FARPROC)0xdeadbeef;
}
}
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(win32, "Dump of segment table\n");
TRACE(win32, " Name VSz Vaddr SzRaw Fileadr *Reloc *Lineum #Reloc #Linum Char\n");
for (i = 0; i< PE_HEADER(hModule)->FileHeader.NumberOfSections; i++)
{
TRACE(win32, "%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)
/* Nothing to do */
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);
/* patching in reverse order */
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:
#if 1
*(int*)(page+offset) += delta;
#else
{ int h=*(unsigned short*)(page+offset);
int l=r->TypeOffset[++i];
*(unsigned int*)(page + offset) = (h<<16) + l + delta;
}
#endif
break;
case IMAGE_REL_BASED_HIGHADJ:
FIXME(win32, "Don't know what to do with IMAGE_REL_BASED_HIGHADJ\n");
break;
case IMAGE_REL_BASED_MIPS_JMPADDR:
FIXME(win32, "Is this a MIPS machine ???\n");
break;
default:
FIXME(win32, "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( LPCSTR name, OFSTRUCT *ofs, LPCSTR *modName )
{
HMODULE hModule;
HFILE hFile;
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, lowest_fa, vma_size, file_size = 0;
DWORD load_addr, aoep, reloc = 0;
char dllname[256], *p;
/* Append .DLL to name if no extension present */
strcpy( dllname, name );
if ((p = strrchr( dllname, '\\' ))) p++; else p = dllname;
if (!strchr( p, '.' )) strcat( dllname, ".DLL" );
/* Open PE file */
hFile = OpenFile( dllname, ofs, OF_READ | OF_SHARE_DENY_WRITE );
if ( hFile == HFILE_ERROR )
{
WARN( win32, "OpenFile error %ld\n", GetLastError() );
return 2;
}
/* Retrieve file size */
if ( GetFileInformationByHandle( hFile, &bhfi ) )
file_size = bhfi.nFileSizeLow; /* FIXME: 64 bit */
/* Map the PE file somewhere */
mapping = CreateFileMappingA( hFile, NULL, PAGE_READONLY | SEC_COMMIT,
0, 0, NULL );
CloseHandle( hFile );
if (!mapping)
{
WARN( win32, "CreateFileMapping error %ld\n", GetLastError() );
return 0;
}
hModule = (HMODULE)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
CloseHandle( mapping );
if (!hModule)
{
WARN( win32, "MapViewOfFile error %ld\n", GetLastError() );
return 0;
}
nt = PE_HEADER( hModule );
/* Check signature */
if ( nt->Signature != IMAGE_NT_SIGNATURE )
{
WARN(win32, "image doesn't have PE signature, but 0x%08lx\n",
nt->Signature );
goto error;
}
/* Check architecture */
if ( nt->FileHeader.Machine != IMAGE_FILE_MACHINE_I386 )
{
MSG("Trying to load PE image for unsupported architecture (");
switch (nt->FileHeader.Machine)
{
case IMAGE_FILE_MACHINE_UNKNOWN: MSG("Unknown"); break;
case IMAGE_FILE_MACHINE_I860: MSG("I860"); break;
case IMAGE_FILE_MACHINE_R3000: MSG("R3000"); break;
case IMAGE_FILE_MACHINE_R4000: MSG("R4000"); break;
case IMAGE_FILE_MACHINE_R10000: MSG("R10000"); break;
case IMAGE_FILE_MACHINE_ALPHA: MSG("Alpha"); break;
case IMAGE_FILE_MACHINE_POWERPC: MSG("PowerPC"); break;
default: MSG("Unknown-%04x", nt->FileHeader.Machine); break;
}
MSG(")\n");
goto error;
}
/* Find out how large this executeable should be */
pe_sec = PE_SECTIONS( hModule );
rawsize = 0; lowest_va = 0x10000; lowest_fa = 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 < lowest_fa)
lowest_fa = pe_sec[i].PointerToRawData;
if (pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData > rawsize)
rawsize = pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData;
}
/* Check file size */
if ( file_size && file_size < rawsize )
{
ERR( win32, "PE module is too small (header: %d, filesize: %d), "
"probably truncated download?\n",
rawsize, file_size );
goto error;
}
/* Check entrypoint address */
aoep = nt->OptionalHeader.AddressOfEntryPoint;
if (aoep && (aoep < lowest_va))
FIXME( win32, "WARNING: '%s' has an invalid entrypoint (0x%08lx) "
"below the first virtual address (0x%08x) "
"(possible Virus Infection or broken binary)!\n",
ofs->szPathName, aoep, lowest_va );
/* Allocate memory for module */
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)
{
/* We need to perform base relocations */
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BASERELOC;
if (dir->Size)
reloc = dir->VirtualAddress;
else
{
FIXME( win32,
"Need to relocate %s, but no relocation records present (%s).\n",
ofs->szPathName,
(nt->FileHeader.Characteristics&IMAGE_FILE_RELOCS_STRIPPED)?
"stripped during link" : "unknown reason" );
goto error;
}
load_addr = (DWORD)VirtualAlloc( NULL, vma_size,
MEM_RESERVE | MEM_COMMIT,
PAGE_EXECUTE_READWRITE );
}
TRACE( win32, "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",
ofs->szPathName, load_addr, vma_size );
/* Store the NT header at the load addr */
*(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 );
#if 0
/* Copies all stuff up to the first section. Including win32 viruses. */
memcpy( load_addr, hModule, lowest_fa );
#endif
/* Copy sections into module image */
pe_sec = PE_SECTIONS( hModule );
for (i = 0; i < nt->FileHeader.NumberOfSections; i++, pe_sec++)
{
/* memcpy only non-BSS segments */
/* FIXME: this should be done by mmap(..MAP_PRIVATE|MAP_FIXED..)
* but it is not possible for (at least) Linux needs
* a page-aligned offset.
*/
if(!(pe_sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
memcpy((char*)RVA(pe_sec->VirtualAddress),
(char*)(hModule + pe_sec->PointerToRawData),
pe_sec->SizeOfRawData);
#if 0
/* not needed, memory is zero */
if(strcmp(pe_sec->Name, ".bss") == 0)
memset((void *)RVA(pe_sec->VirtualAddress), 0,
pe_sec->Misc.VirtualSize ?
pe_sec->Misc.VirtualSize :
pe_sec->SizeOfRawData);
#endif
}
/* Perform base relocation, if necessary */
if ( reloc )
do_relocations( load_addr, (IMAGE_BASE_RELOCATION *)RVA(reloc) );
/* Get module name */
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_EXPORT;
if (dir->Size)
*modName = (LPCSTR)RVA(((PIMAGE_EXPORT_DIRECTORY)RVA(dir->VirtualAddress))->Name);
/* We don't need the orignal mapping any more */
UnmapViewOfFile( (LPVOID)hModule );
return (HMODULE)load_addr;
error:
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,
OFSTRUCT *ofs, DWORD flags, BOOL builtin )
{
DWORD load_addr = (DWORD)hModule; /* for RVA */
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;
char *modname;
/* 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_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( win32, "Exception directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_SECURITY;
if (dir->Size) FIXME( win32, "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_DEBUG;
if (dir->Size) TRACE( win32, "Debug directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_COPYRIGHT;
if (dir->Size) FIXME( win32, "Copyright string ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_GLOBALPTR;
if (dir->Size) FIXME( win32, "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 (win32, "Load Configuration directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT;
if (dir->Size) TRACE( win32, "Bound Import directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+IMAGE_DIRECTORY_ENTRY_IAT;
if (dir->Size) TRACE( win32, "Import Address Table directory ignored\n" );
dir = nt->OptionalHeader.DataDirectory+13;
if (dir->Size) FIXME( win32, "Unknown directory 13 ignored\n" );
dir = nt->OptionalHeader.DataDirectory+14;
if (dir->Size) FIXME( win32, "Unknown directory 14 ignored\n" );
dir = nt->OptionalHeader.DataDirectory+15;
if (dir->Size) FIXME( win32, "Unknown directory 15 ignored\n" );
/* Allocate and fill WINE_MODREF */
wm = (WINE_MODREF *)HeapAlloc( GetProcessHeap(),
HEAP_ZERO_MEMORY, sizeof(*wm) );
wm->module = hModule;
wm->type = MODULE32_PE;
wm->binfmt.pe.flags = builtin? PE_MODREF_INTERNAL : 0;
wm->binfmt.pe.pe_export = pe_export;
wm->binfmt.pe.pe_import = pe_import;
wm->binfmt.pe.pe_resource = pe_resource;
if ( pe_export )
modname = (char *)RVA( pe_export->Name );
else
{
/* try to find out the name from the OFSTRUCT */
char *s;
modname = ofs->szPathName;
while ((s=strchr(modname,'\\')))
modname = s+1;
}
wm->modname = HEAP_strdupA( GetProcessHeap(), 0, modname );
result = GetLongPathNameA( ofs->szPathName, NULL, 0 );
wm->longname = (char *)HeapAlloc( GetProcessHeap(), 0, result+1 );
GetLongPathNameA( ofs->szPathName, wm->longname, result+1 );
wm->shortname = HEAP_strdupA( GetProcessHeap(), 0, ofs->szPathName );
/* Link MODREF into process list */
wm->next = PROCESS_Current()->modref_list;
PROCESS_Current()->modref_list = wm;
if ( !(nt->FileHeader.Characteristics & IMAGE_FILE_DLL) )
{
if ( PROCESS_Current()->exe_modref )
FIXME( win32, "overwriting old exe_modref... arrgh\n" );
PROCESS_Current()->exe_modref = wm;
}
/* Dump Exports */
if ( pe_export )
dump_exports( hModule );
/* Fixup Imports */
if ( pe_import && fixup_imports( wm ) )
{
/* remove entry from modref chain */
WINE_MODREF **xwm;
for ( xwm = &PROCESS_Current()->modref_list; *xwm; xwm = &(*xwm)->next )
if ( *xwm == wm )
{
*xwm = wm->next;
break;
}
/* 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;
}
return wm;
}
/******************************************************************************
* The PE Library Loader frontend.
* FIXME: handle the flags.
*/
HMODULE PE_LoadLibraryExA (LPCSTR name,
HFILE hFile, DWORD flags)
{
LPCSTR modName = NULL;
OFSTRUCT ofs;
HMODULE hModule32;
HMODULE16 hModule16;
NE_MODULE *pModule;
WINE_MODREF *wm;
BOOL builtin;
/* Check for already loaded module */
if ((hModule32 = MODULE_FindModule( name )))
return hModule32;
/* try to load builtin, enabled modules first */
if ((hModule32 = BUILTIN32_LoadImage( name, &ofs, FALSE )))
builtin = TRUE;
/* try to load the specified dll/exe */
else if ((hModule32 = PE_LoadImage( name, &ofs, &modName )) >= 32)
builtin = FALSE;
/* Now try the built-in even if disabled */
else if ((hModule32 = BUILTIN32_LoadImage( name, &ofs, TRUE )))
{
WARN( module, "Could not load external DLL '%s', using built-in module.\n", name );
builtin = TRUE;
}
else
return 0;
/* Create 16-bit dummy module */
if ((hModule16 = MODULE_CreateDummyModule( &ofs, modName )) < 32) return hModule16;
pModule = (NE_MODULE *)GlobalLock16( hModule16 );
pModule->flags = NE_FFLAGS_LIBMODULE | NE_FFLAGS_SINGLEDATA |
NE_FFLAGS_WIN32 | (builtin? NE_FFLAGS_BUILTIN : 0);
pModule->module32 = hModule32;
/* Create 32-bit MODREF */
if ( !(wm = PE_CreateModule( hModule32, &ofs, flags, builtin )) )
{
ERR(win32,"can't load %s\n",ofs.szPathName);
FreeLibrary16( hModule16 );
return 0;
}
if (wm->binfmt.pe.pe_export)
SNOOP_RegisterDLL(wm->module,wm->modname,wm->binfmt.pe.pe_export->NumberOfFunctions);
return wm->module;
}
/*****************************************************************************
* Load the PE main .EXE. All other loading is done by PE_LoadLibraryEx32A
* FIXME: this function should use PE_LoadLibraryEx32A, but currently can't
* due to the PROCESS_Create stuff.
*/
HINSTANCE16 PE_CreateProcess( LPCSTR name, LPCSTR cmd_line,
LPCSTR env, BOOL inherit, LPSTARTUPINFOA startup,
LPPROCESS_INFORMATION info )
{
LPCSTR modName = NULL;
HMODULE16 hModule16;
HMODULE hModule32;
HINSTANCE16 hInstance;
NE_MODULE *pModule;
OFSTRUCT ofs;
PDB *process;
/* Load file */
if ((hModule32 = PE_LoadImage( name, &ofs, &modName )) < 32)
return hModule32;
#if 0
if (PE_HEADER(hModule32)->FileHeader.Characteristics & IMAGE_FILE_DLL)
return 20; /* FIXME: not the right error code */
#endif
/* Create 16-bit dummy module */
if ((hModule16 = MODULE_CreateDummyModule( &ofs, modName )) < 32) return hModule16;
pModule = (NE_MODULE *)GlobalLock16( hModule16 );
pModule->flags = NE_FFLAGS_WIN32;
pModule->module32 = hModule32;
/* Create new process */
hInstance = NE_CreateInstance( pModule, NULL, FALSE );
process = PROCESS_Create( pModule, cmd_line, env,
hInstance, 0, inherit, startup, info );
/* Note: PE_CreateModule and the remaining process initialization will
be done in the context of the new process, in TASK_CallToStart */
return hInstance;
}
/*********************************************************************
* PE_UnloadImage [internal]
*/
int PE_UnloadImage( HMODULE hModule )
{
FIXME(win32,"stub.\n");
/* free resources, image, unmap */
return 1;
}
/* 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)
*/
void PE_InitDLL(WINE_MODREF *wm, DWORD type, LPVOID lpReserved)
{
if (wm->type!=MODULE32_PE)
return;
if (wm->binfmt.pe.flags & PE_MODREF_NO_DLL_CALLS)
return;
if (type==DLL_PROCESS_ATTACH)
{
if (wm->binfmt.pe.flags & PE_MODREF_PROCESS_ATTACHED)
return;
wm->binfmt.pe.flags |= PE_MODREF_PROCESS_ATTACHED;
}
/* DLL_ATTACH_PROCESS:
* lpreserved is NULL for dynamic loads, not-NULL for static loads
* DLL_DETACH_PROCESS:
* lpreserved is NULL if called by FreeLibrary, not-NULL otherwise
* the SDK doesn't mention anything for DLL_THREAD_*
*/
/* Is this a library? And has it got an entrypoint? */
if ((PE_HEADER(wm->module)->FileHeader.Characteristics & IMAGE_FILE_DLL) &&
(PE_HEADER(wm->module)->OptionalHeader.AddressOfEntryPoint)
) {
DLLENTRYPROC 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 );
entry( wm->module, type, lpReserved );
}
}
/************************************************************************
* 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.
*/
void PE_InitTls(THDB *thdb)
{
WINE_MODREF *wm;
PE_MODREF *pem;
IMAGE_NT_HEADERS *peh;
DWORD size,datasize;
LPVOID mem;
PIMAGE_TLS_DIRECTORY pdir;
PDB *pdb = thdb->process;
int delta;
for (wm = pdb->modref_list;wm;wm=wm->next) {
if (wm->type!=MODULE32_PE)
continue;
pem = &(wm->binfmt.pe);
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 (!(pem->flags & PE_MODREF_TLS_ALLOCED)) {
pem->tlsindex = THREAD_TlsAlloc(thdb);
*pdir->AddressOfIndex=pem->tlsindex;
}
pem->flags |= PE_MODREF_TLS_ALLOCED;
datasize= pdir->EndAddressOfRawData-pdir->StartAddressOfRawData;
size = datasize + pdir->SizeOfZeroFill;
mem=VirtualAlloc(0,size,MEM_RESERVE|MEM_COMMIT,PAGE_READWRITE);
memcpy(mem,(LPVOID)pdir->StartAddressOfRawData,datasize);
if (pdir->AddressOfCallBacks) {
PIMAGE_TLS_CALLBACK *cbs =
(PIMAGE_TLS_CALLBACK *)pdir->AddressOfCallBacks;
if (*cbs)
FIXME(win32, "TLS Callbacks aren't going to be called\n");
}
/* Don't use TlsSetValue, we are in the wrong thread */
thdb->tls_array[pem->tlsindex] = mem;
}
}
/****************************************************************************
* DisableThreadLibraryCalls (KERNEL32.74)
* Don't call DllEntryPoint for DLL_THREAD_{ATTACH,DETACH} if set.
*/
BOOL WINAPI DisableThreadLibraryCalls(HMODULE hModule)
{
WINE_MODREF *wm;
for (wm=PROCESS_Current()->modref_list;wm;wm=wm->next)
if ((wm->module == hModule) && (wm->type==MODULE32_PE))
wm->binfmt.pe.flags|=PE_MODREF_NO_DLL_CALLS;
return TRUE;
}
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