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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).
* - All those function map things into a new addresspace. From the wrong
* process and the wrong thread. So calling other API functions will mess
* things up badly sometimes.
*/
#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 "windows.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( HMODULE32 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
*/
FARPROC32 PE_FindExportedFunction(
PDB32 *process, /* [in] process context */
WINE_MODREF *wm, /* [in] WINE modreference */
LPCSTR funcName, /* [in] function name */
BOOL32 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_GetProcAddress32(wm->module,ename,*ordinal,(FARPROC32)RVA(addr))
: (FARPROC32)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_GetProcAddress32(wm->module,ename,(DWORD)funcName-exports->Base,(FARPROC32)RVA(addr))
: (FARPROC32)RVA(addr);
forward = (char *)RVA(addr);
}
if (forward)
{
HMODULE32 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_FindModule32(process,module);
assert(hMod);
return MODULE_GetProcAddress32( process, hMod, end + 1, snoop );
}
return NULL;
}
DWORD fixup_imports (PDB32 *process,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(process->heap, 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++) {
HMODULE32 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_LoadLibraryEx32A( name, process, 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_LoadLibraryEx32A( buffer, process, 0, 0 );
}
if (!hImpModule) {
ERR (module, "Module %s not found\n", name);
return 1;
}
xwm = MODULE32_LookupHMODULE(process, 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_GetProcAddress32(
process, 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 = (FARPROC32)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_GetProcAddress32(
process, 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 = (FARPROC32)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_GetProcAddress32(
process, 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 = (FARPROC32)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_GetProcAddress32(
process, 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 = (FARPROC32)0xdeadbeef;
}
}
thunk_list++;
}
}
}
return 0;
}
static int calc_vma_size( HMODULE32 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(WINE_MODREF *wm)
{
PE_MODREF *pem = &(wm->binfmt.pe);
int delta = wm->module - PE_HEADER(wm->module)->OptionalHeader.ImageBase;
unsigned int load_addr= wm->module;
IMAGE_BASE_RELOCATION *r = pem->pe_reloc;
int hdelta = (delta >> 16) & 0xFFFF;
int ldelta = delta & 0xFFFF;
/* int reloc_size = */
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)
*/
static HMODULE32 PE_LoadImage( HFILE32 hFile )
{
HMODULE32 hModule;
HANDLE32 mapping;
int i,rawsize = 0;
IMAGE_SECTION_HEADER *pe_sec;
BY_HANDLE_FILE_INFORMATION bhfi;
/* map the PE file somewhere */
mapping = CreateFileMapping32A( hFile, NULL, PAGE_READONLY | SEC_COMMIT,
0, 0, NULL );
if (!mapping)
{
WARN( win32, "CreateFileMapping error %ld\n",
GetLastError() );
return 0;
}
hModule = (HMODULE32)MapViewOfFile( mapping, FILE_MAP_READ, 0, 0, 0 );
CloseHandle( mapping );
if (!hModule)
{
WARN( win32, "PE_LoadImage: MapViewOfFile error %ld\n",
GetLastError() );
return 0;
}
if (PE_HEADER(hModule)->Signature != IMAGE_NT_SIGNATURE)
{
WARN(win32,"image doesn't have PE signature, but 0x%08lx\n",
PE_HEADER(hModule)->Signature );
goto error;
}
if (PE_HEADER(hModule)->FileHeader.Machine != IMAGE_FILE_MACHINE_I386)
{
MSG("Trying to load PE image for unsupported architecture (");
switch (PE_HEADER(hModule)->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",
PE_HEADER(hModule)->FileHeader.Machine); break;
}
MSG(")\n");
goto error;
}
/* find out how large this executeable should be */
pe_sec = PE_SECTIONS(hModule);
for (i=0;i<PE_HEADER(hModule)->FileHeader.NumberOfSections;i++) {
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 (GetFileInformationByHandle(hFile,&bhfi)) {
/* FIXME: 64 bit */
if (bhfi.nFileSizeLow < rawsize) {
ERR(win32,"PE module is too small (header: %d, filesize: %d), probably truncated download?\n",rawsize,bhfi.nFileSizeLow);
goto error;
}
}
/* Else ... Hmm, we have opened it, so we should be able to get info?
* Anyway, don't care in this case
*/
return hModule;
error:
UnmapViewOfFile( (LPVOID)hModule );
return 0;
}
/**********************************************************************
* This maps a loaded PE dll into the address space of the specified process.
*/
static BOOL32 PE_MapImage( PDB32 *process,WINE_MODREF *wm, OFSTRUCT *ofs, DWORD flags )
{
PE_MODREF *pem;
int i, result;
DWORD load_addr,lowest_va,lowest_fa;
IMAGE_DATA_DIRECTORY dir;
char *modname;
int vma_size;
HMODULE32 hModule = wm->module;
DWORD aoep = PE_HEADER(hModule)->OptionalHeader.AddressOfEntryPoint;
IMAGE_SECTION_HEADER *pe_seg;
IMAGE_DOS_HEADER *dos_header = (IMAGE_DOS_HEADER *)hModule;
IMAGE_NT_HEADERS *nt_header = PE_HEADER(hModule);
pem = &(wm->binfmt.pe);
result = GetLongPathName32A(ofs->szPathName,NULL,0);
wm->longname = (char*)HeapAlloc(process->heap,0,result+1);
GetLongPathName32A(ofs->szPathName,wm->longname,result+1);
wm->shortname = HEAP_strdupA(process->heap,0,ofs->szPathName);
if (!(nt_header->FileHeader.Characteristics & IMAGE_FILE_DLL))
{
if (process->exe_modref)
FIXME(win32,"overwriting old exe_modref... arrgh\n");
process->exe_modref = wm;
}
load_addr = nt_header->OptionalHeader.ImageBase;
vma_size = calc_vma_size( hModule );
TRACE(win32, "Load addr is %lx\n",load_addr);
load_addr = (DWORD)VirtualAlloc( (void*)load_addr, vma_size,
MEM_RESERVE | MEM_COMMIT,
PAGE_EXECUTE_READWRITE );
if (load_addr == 0) {
load_addr = (DWORD)VirtualAlloc( NULL, vma_size,
MEM_RESERVE | MEM_COMMIT,
PAGE_EXECUTE_READWRITE );
}
/* NOTE: this changes a value in the process modref chain, which can
* be accessed independently from this function
*/
wm->module = (HMODULE32)load_addr;
TRACE(win32, "Load addr is really %lx, range %x\n",
load_addr, vma_size);
TRACE(segment, "Loading %s at %lx, range %x\n",
ofs->szPathName, load_addr, vma_size );
/* Find out where this executeable should start */
pe_seg = PE_SECTIONS(hModule);lowest_va = 0x10000;lowest_fa = 0x10000;
for (i=0;i<PE_HEADER(hModule)->FileHeader.NumberOfSections;i++) {
if (lowest_va > pe_seg[i].VirtualAddress)
lowest_va = pe_seg[i].VirtualAddress;
if (!(pe_seg[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
&& (pe_seg[i].PointerToRawData<lowest_fa)
)
lowest_fa = pe_seg[i].PointerToRawData;
}
if (aoep && (aoep<lowest_va))
FIXME(win32,"WARNING: '%s' has an invalid entrypoint (0x%08lx) below the first virtual address (0x%08lx) (possible Virus Infection or broken binary)!\n",ofs->szPathName,aoep,lowest_va);
/* Store the NT header at the load addr
* (FIXME: should really use mmap)
*/
*(IMAGE_DOS_HEADER *)load_addr = *dos_header;
*(IMAGE_NT_HEADERS *)(load_addr + dos_header->e_lfanew) = *nt_header;
memcpy(PE_SECTIONS(load_addr),PE_SECTIONS(hModule),sizeof(IMAGE_SECTION_HEADER)*nt_header->FileHeader.NumberOfSections);
#if 0
/* Copies all stuff up to the first section. Including win32 viruses. */
memcpy(load_addr,hModule,lowest_fa);
#endif
pe_seg = PE_SECTIONS(hModule);
for (i = 0; i < nt_header->FileHeader.NumberOfSections; i++, pe_seg++)
{
/* 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_seg->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
memcpy((char*)RVA(pe_seg->VirtualAddress),
(char*)(hModule + pe_seg->PointerToRawData),
pe_seg->SizeOfRawData
);
result = RVA (pe_seg->VirtualAddress);
#if 1
/* not needed, memory is zero */
if(strcmp(pe_seg->Name, ".bss") == 0)
memset((void *)result, 0,
pe_seg->Misc.VirtualSize ?
pe_seg->Misc.VirtualSize :
pe_seg->SizeOfRawData);
#endif
if(strcmp(pe_seg->Name, ".idata") == 0)
pem->pe_import = (PIMAGE_IMPORT_DESCRIPTOR) result;
if(strcmp(pe_seg->Name, ".edata") == 0)
pem->pe_export = (PIMAGE_EXPORT_DIRECTORY) result;
if(strcmp(pe_seg->Name, ".rsrc") == 0)
pem->pe_resource = (PIMAGE_RESOURCE_DIRECTORY) result;
if(strcmp(pe_seg->Name, ".reloc") == 0)
pem->pe_reloc = (PIMAGE_BASE_RELOCATION) result;
}
/* There is word that the actual loader does not care about the
section names, and only goes for the DataDirectory */
dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXPORT];
if(dir.Size)
{
if(pem->pe_export && (int)pem->pe_export!=RVA(dir.VirtualAddress))
WARN(win32,"wrong export directory??\n");
/* always trust the directory */
pem->pe_export = (PIMAGE_EXPORT_DIRECTORY) RVA(dir.VirtualAddress);
}
dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_IMPORT];
if(dir.Size)
{
/*
if(pem->pe_import && (int)pem->pe_import!=RVA(dir.VirtualAddress))
WARN(win32,"wrong import directory??\n");
*/
pem->pe_import = (PIMAGE_IMPORT_DESCRIPTOR) RVA(dir.VirtualAddress);
}
dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE];
if(dir.Size)
{
if(pem->pe_resource && (int)pem->pe_resource!=RVA(dir.VirtualAddress))
WARN(win32,"wrong resource directory??\n");
pem->pe_resource = (PIMAGE_RESOURCE_DIRECTORY) RVA(dir.VirtualAddress);
}
if(nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_EXCEPTION].Size)
FIXME(win32,"Exception directory ignored\n");
if(nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_SECURITY].Size)
FIXME(win32,"Security directory ignored\n");
dir=nt_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_BASERELOC];
if(dir.Size)
{
if(pem->pe_reloc && (int)pem->pe_reloc!= RVA(dir.VirtualAddress))
WARN(win32,"wrong relocation list??\n");
pem->pe_reloc = (void *) RVA(dir.VirtualAddress);
}
if(nt_header->OptionalHeader.DataDirectory
[IMAGE_DIRECTORY_ENTRY_COPYRIGHT].Size)
FIXME(win32,"Copyright string ignored\n");
if(nt_header->OptionalHeader.DataDirectory
[IMAGE_DIRECTORY_ENTRY_GLOBALPTR].Size)
FIXME(win32,"Global Pointer (MIPS) ignored\n");
if(nt_header->OptionalHeader.DataDirectory
[IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG].Size)
FIXME(win32,"Load Configuration directory ignored\n");
if(nt_header->OptionalHeader.DataDirectory
[IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT].Size)
TRACE(win32,"Bound Import directory ignored\n");
if(nt_header->OptionalHeader.DataDirectory
[IMAGE_DIRECTORY_ENTRY_IAT].Size)
TRACE(win32,"Import Address Table directory ignored\n");
if(nt_header->OptionalHeader.DataDirectory[13].Size)
FIXME(win32,"Unknown directory 13 ignored\n");
if(nt_header->OptionalHeader.DataDirectory[14].Size)
FIXME(win32,"Unknown directory 14 ignored\n");
if(nt_header->OptionalHeader.DataDirectory[15].Size)
FIXME(win32,"Unknown directory 15 ignored\n");
if(wm->module!=nt_header->OptionalHeader.ImageBase) {
if (pem->pe_reloc)
do_relocations(wm);
else {
/* FIXME: we could return before the second VirtualAlloc ... */
FIXME(win32,
"Had to relocate %s, but without relocation records (%s), continuing. (But expect crash now).\n",
ofs->szPathName,
(nt_header->FileHeader.Characteristics&IMAGE_FILE_RELOCS_STRIPPED)?"stripped during link":"unknown reason"
);
}
}
if(pem->pe_export) {
dump_exports(wm->module);
wm->modname = HEAP_strdupA(process->heap,0,(char*)RVA(pem->pe_export->Name));
} else {
/* try to find out the name from the OFSTRUCT */
char *s;
modname = s = ofs->szPathName;
while ((s=strchr(modname,'\\')))
modname = s+1;
wm->modname = HEAP_strdupA(process->heap,0,modname);
}
if(pem->pe_import) {
if (fixup_imports(process,wm)) {
WINE_MODREF **xwm;
/* remove entry from modref chain */
xwm = &(process->modref_list);
while (*xwm) {
if (*xwm==wm) {
*xwm = wm->next;
break;
}
xwm = &((*xwm)->next);
}
/* 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
*/
return 0;
}
}
/* Now that we got everything at the right address,
* we can unmap the previous module */
UnmapViewOfFile( (LPVOID)hModule );
return 1;
}
/******************************************************************************
* The PE Library Loader frontend.
* FIXME: handle the flags.
* internal module handling should be made better here (and in builtin.c)
*/
HMODULE32 PE_LoadLibraryEx32A (LPCSTR name, PDB32 *process,
HFILE32 hFile, DWORD flags)
{
OFSTRUCT ofs;
HMODULE32 hModule;
NE_MODULE *pModule;
WINE_MODREF *wm;
if ((hModule = MODULE_FindModule32( process, name ))) {
for (wm= process->modref_list;wm;wm=wm->next)
if (wm->module == hModule)
return hModule;
/* Since MODULE_FindModule32 uses the modref chain too, the
* module MUST have been found above. If not, something has gone
* terribly wrong.
*/
assert(0);
}
/* try to load builtin, enabled modules first */
if ((hModule = BUILTIN32_LoadModule( name, FALSE, process )))
return hModule;
/* try to load the specified dll/exe */
if (HFILE_ERROR32==(hFile=OpenFile32(name,&ofs,OF_READ))) {
/* Now try the built-in even if disabled */
if ((hModule = BUILTIN32_LoadModule( name, TRUE, process ))) {
WARN( module, "Could not load external DLL '%s', using built-in module.\n", name );
return hModule;
}
return 0;
}
/* will go away ... */
if ((hModule = MODULE_CreateDummyModule( &ofs )) < 32) {
_lclose32(hFile);
return hModule;
}
pModule = (NE_MODULE *)GlobalLock16( hModule );
pModule->flags = NE_FFLAGS_WIN32;
/* .. */
wm=(WINE_MODREF*)HeapAlloc(process->heap,HEAP_ZERO_MEMORY,sizeof(*wm));
wm->type = MODULE32_PE;
/* NOTE: fixup_imports takes care of the correct order */
wm->next = process->modref_list;
process->modref_list = wm;
wm->module = pModule->module32 = PE_LoadImage( hFile );
CloseHandle( hFile );
if (wm->module < 32)
{
process->modref_list = wm->next;
FreeLibrary16( hModule);
HeapFree(process->heap,0,wm);
ERR(win32,"can't load %s\n",ofs.szPathName);
return 0;
}
/* (possible) recursion */
if (!PE_MapImage(process,wm,&ofs,flags)) {
/* ERROR cleanup ... */
WINE_MODREF **xwm;
ERR(win32,"couldn't load %s\n",ofs.szPathName);
/* unlink from process modref chain */
for ( xwm=&(process->modref_list);
*xwm && (*xwm!=wm);
xwm=&((*xwm)->next)
) /* EMPTY */;
if (*xwm)
*xwm=(*xwm)->next;
return 0;
}
pModule->module32 = wm->module;
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, LPSTARTUPINFO32A startup,
LPPROCESS_INFORMATION info )
{
HMODULE16 hModule16;
HMODULE32 hModule32;
HINSTANCE16 hInstance;
NE_MODULE *pModule;
HFILE32 hFile;
OFSTRUCT ofs;
PDB32 *process;
TDB *pTask;
WINE_MODREF *wm;
if ((hFile = OpenFile32( name, &ofs, OF_READ )) == HFILE_ERROR32)
return 2; /* File not found */
if ((hModule16 = MODULE_CreateDummyModule( &ofs )) < 32) return hModule16;
pModule = (NE_MODULE *)GlobalLock16( hModule16 );
pModule->flags = NE_FFLAGS_WIN32;
pModule->module32 = hModule32 = PE_LoadImage( hFile );
if (hModule32 < 32) return 21;
if (PE_HEADER(hModule32)->FileHeader.Characteristics & IMAGE_FILE_DLL)
return 11;
hInstance = NE_CreateInstance( pModule, NULL, FALSE );
process = PROCESS_Create( pModule, cmd_line, env,
hInstance, 0, startup, info );
pTask = (TDB *)GlobalLock16( process->task );
wm=(WINE_MODREF*)HeapAlloc(process->heap,HEAP_ZERO_MEMORY,sizeof(*wm));
wm->type = MODULE32_PE;
/* NOTE: fixup_imports takes care of the correct order */
wm->next = process->modref_list;
wm->module = hModule32;
process->modref_list = wm;
if (!PE_MapImage( process, wm, &ofs, 0 ))
{
/* FIXME: should destroy the task created and free referenced stuff */
return 0;
}
pModule->module32 = wm->module;
/* FIXME: Yuck. Is there no other good place to do that? */
PE_InitTls( pTask->thdb );
return hInstance;
}
/*********************************************************************
* PE_UnloadImage [internal]
*/
int PE_UnloadImage( HMODULE32 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)
) {
DLLENTRYPROC32 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;
PDB32 *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;
FIXME(win32,"%s has TLS directory.\n",wm->longname);
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.
*/
BOOL32 WINAPI DisableThreadLibraryCalls(HMODULE32 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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