255 lines
7.1 KiB
C
255 lines
7.1 KiB
C
/*
|
|
* UNIX dynamic loader
|
|
*
|
|
* Currently only supports stuff using the dl* API.
|
|
*
|
|
* Copyright 1998 Marcus Meissner
|
|
*
|
|
* FIXME: Small reentrancy problem.
|
|
* IDEA(s): could be used to split up shell32,comctl32...
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <assert.h>
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <sys/types.h>
|
|
|
|
#include "windows.h"
|
|
#include "snoop.h"
|
|
#include "process.h"
|
|
#include "peexe.h"
|
|
#include "heap.h"
|
|
#include "pe_image.h"
|
|
#include "module.h"
|
|
#include "debug.h"
|
|
|
|
WINE_MODREF *
|
|
ELF_CreateDummyModule( LPCSTR libname, LPCSTR modname, PDB32 *process )
|
|
{
|
|
PIMAGE_DOS_HEADER dh;
|
|
PIMAGE_NT_HEADERS nth;
|
|
PIMAGE_SECTION_HEADER sh;
|
|
WINE_MODREF *wm;
|
|
HMODULE32 hmod;
|
|
|
|
wm=(WINE_MODREF*)HeapAlloc(process->heap,HEAP_ZERO_MEMORY,sizeof(*wm));
|
|
wm->type = MODULE32_ELF;
|
|
|
|
/* FIXME: hmm, order? */
|
|
wm->next = process->modref_list;
|
|
process->modref_list = wm;
|
|
|
|
wm->modname = HEAP_strdupA(process->heap,0,modname);
|
|
wm->longname = HEAP_strdupA(process->heap,0,libname);
|
|
|
|
hmod = (HMODULE32)HeapAlloc(process->heap,HEAP_ZERO_MEMORY,sizeof(IMAGE_DOS_HEADER)+sizeof(IMAGE_NT_HEADERS)+sizeof(IMAGE_SECTION_HEADER)+100);
|
|
dh = (PIMAGE_DOS_HEADER)hmod;
|
|
dh->e_magic = IMAGE_DOS_SIGNATURE;
|
|
dh->e_lfanew = sizeof(IMAGE_DOS_HEADER);
|
|
nth = PE_HEADER(hmod);
|
|
nth->Signature = IMAGE_NT_SIGNATURE;
|
|
nth->FileHeader.Machine = IMAGE_FILE_MACHINE_I386;
|
|
nth->FileHeader.NumberOfSections = 1;
|
|
nth->FileHeader.SizeOfOptionalHeader = sizeof(IMAGE_OPTIONAL_HEADER);
|
|
nth->FileHeader.Characteristics =
|
|
IMAGE_FILE_RELOCS_STRIPPED|IMAGE_FILE_LINE_NUMS_STRIPPED|
|
|
IMAGE_FILE_LOCAL_SYMS_STRIPPED|IMAGE_FILE_32BIT_MACHINE|
|
|
IMAGE_FILE_DLL|IMAGE_FILE_DEBUG_STRIPPED;
|
|
nth->OptionalHeader.Magic = IMAGE_NT_OPTIONAL_HDR_MAGIC;
|
|
nth->OptionalHeader.SizeOfCode = 0;
|
|
nth->OptionalHeader.SizeOfInitializedData = 0;
|
|
nth->OptionalHeader.SizeOfUninitializedData = 0;
|
|
nth->OptionalHeader.AddressOfEntryPoint = 0;
|
|
nth->OptionalHeader.BaseOfCode = 0;
|
|
nth->OptionalHeader.MajorOperatingSystemVersion = 4;
|
|
nth->OptionalHeader.MajorImageVersion = 4;
|
|
nth->OptionalHeader.SizeOfImage = 0;
|
|
nth->OptionalHeader.SizeOfHeaders = 0;
|
|
nth->OptionalHeader.Subsystem = IMAGE_SUBSYSTEM_NATIVE;
|
|
nth->OptionalHeader.DllCharacteristics = 0;
|
|
nth->OptionalHeader.NumberOfRvaAndSizes = 0;
|
|
|
|
/* allocate one code section that crosses the whole process range
|
|
* (we could find out from internal tables ... hmm )
|
|
*/
|
|
sh=(PIMAGE_SECTION_HEADER)(nth+1);
|
|
strcpy(sh->Name,".text");
|
|
sh->Misc.VirtualSize = 0x7fffffff;
|
|
sh->VirtualAddress = 0x42; /* so snoop can use it ... */
|
|
sh->SizeOfRawData = 0x7fffffff;
|
|
sh->PointerToRawData = 0;
|
|
sh->Characteristics = IMAGE_SCN_CNT_CODE|IMAGE_SCN_CNT_INITIALIZED_DATA|IMAGE_SCN_MEM_EXECUTE|IMAGE_SCN_MEM_READ;
|
|
wm->module = hmod;
|
|
return wm;
|
|
}
|
|
|
|
|
|
#if defined(HAVE_LIBDL) && defined(HAVE_DLFCN_H)
|
|
|
|
#define UNIX_DLL_ENDING "so"
|
|
|
|
#define STUBSIZE 4095
|
|
|
|
#include <dlfcn.h>
|
|
|
|
HMODULE32
|
|
ELF_LoadLibraryEx32A(LPCSTR libname,PDB32 *process,HANDLE32 hf,DWORD flags) {
|
|
WINE_MODREF *wm;
|
|
char *modname,*s,*t,*x;
|
|
LPVOID *dlhandle;
|
|
|
|
t = HeapAlloc(process->heap,HEAP_ZERO_MEMORY,strlen(libname)+strlen("lib.so")+1);
|
|
*t = '\0';
|
|
/* copy path to tempvar ... */
|
|
s=strrchr(libname,'/');
|
|
if (!s)
|
|
s=strrchr(libname,'\\');
|
|
if (s) {
|
|
strncpy(t,libname,s-libname+1);
|
|
t[s-libname+1]= '\0';
|
|
} else
|
|
s = (LPSTR)libname;
|
|
modname = s;
|
|
/* append "lib" foo ".so" */
|
|
strcat(t,"lib");
|
|
x = t+strlen(t);
|
|
strcat(t,s);
|
|
s = strchr(x,'.');
|
|
while (s) {
|
|
if (!strcasecmp(s,".dll")) {
|
|
strcpy(s+1,UNIX_DLL_ENDING);
|
|
break;
|
|
}
|
|
s=strchr(s+1,'.');
|
|
}
|
|
|
|
/* FIXME: make UNIX filename from DOS fn? */
|
|
|
|
/* ... and open it */
|
|
dlhandle = dlopen(t,RTLD_NOW);
|
|
if (!dlhandle) {
|
|
HeapFree(process->heap,0,t);
|
|
return 0;
|
|
}
|
|
|
|
wm = ELF_CreateDummyModule( t, modname, process );
|
|
wm->binfmt.elf.dlhandle = dlhandle;
|
|
|
|
SNOOP_RegisterDLL(wm->module,libname,STUBSIZE/sizeof(ELF_STDCALL_STUB));
|
|
return wm->module;
|
|
}
|
|
|
|
FARPROC32
|
|
ELF_FindExportedFunction( PDB32 *process,WINE_MODREF *wm, LPCSTR funcName) {
|
|
LPVOID fun;
|
|
int i,nrofargs = 0;
|
|
ELF_STDCALL_STUB *stub;
|
|
|
|
assert(wm->type == MODULE32_ELF);
|
|
if (!HIWORD(funcName)) {
|
|
ERR(win32,"Can't import from UNIX dynamic libs by ordinal, sorry.\n");
|
|
return (FARPROC32)0;
|
|
}
|
|
fun = dlsym(wm->binfmt.elf.dlhandle,funcName);
|
|
/* we sometimes have an excess '_' at the beginning of the name */
|
|
if (!fun && (funcName[0]=='_')) {
|
|
funcName++ ;
|
|
fun = dlsym(wm->binfmt.elf.dlhandle,funcName);
|
|
}
|
|
if (!fun) {
|
|
/* Function@nrofargs usually marks a stdcall function
|
|
* with nrofargs bytes that are popped at the end
|
|
*/
|
|
if (strchr(funcName,'@')) {
|
|
LPSTR t,fn = HEAP_strdupA(process->heap,0,funcName);
|
|
|
|
t = strchr(fn,'@');
|
|
*t = '\0';
|
|
nrofargs = 0;
|
|
sscanf(t+1,"%d",&nrofargs);
|
|
fun = dlsym(wm->binfmt.elf.dlhandle,fn);
|
|
HeapFree(process->heap,0,fn);
|
|
}
|
|
}
|
|
/* We sometimes have Win32 dlls implemented using stdcall but UNIX
|
|
* dlls using cdecl. If we find out the number of args the function
|
|
* uses, we remove them from the stack using two small stubs.
|
|
*/
|
|
if (!wm->binfmt.elf.stubs) {
|
|
/* one page should suffice */
|
|
wm->binfmt.elf.stubs = VirtualAlloc(NULL,STUBSIZE,MEM_COMMIT|MEM_RESERVE,PAGE_EXECUTE_READWRITE);
|
|
memset(wm->binfmt.elf.stubs,0,STUBSIZE);
|
|
}
|
|
stub = wm->binfmt.elf.stubs;
|
|
for (i=0;i<STUBSIZE/sizeof(ELF_STDCALL_STUB);i++) {
|
|
if (!stub->origfun)
|
|
break;
|
|
if (stub->origfun == (DWORD)fun)
|
|
break;
|
|
stub++;
|
|
}
|
|
if (i==STUBSIZE/sizeof(ELF_STDCALL_STUB)) {
|
|
ERR(win32,"please report, that there are not enough slots for stdcall stubs in the ELF loader.\n");
|
|
assert(i<STUBSIZE/sizeof(ELF_STDCALL_STUB));
|
|
}
|
|
if (!stub->origfun)
|
|
stub->origfun=(DWORD)fun; /* just a marker */
|
|
|
|
if (fun && nrofargs) { /* we don't need it for 0 args */
|
|
/* Selfmodifying entry/return stub for stdcall -> cdecl
|
|
* conversion.
|
|
* - Pop returnaddress directly into our return code
|
|
* popl <into code below>
|
|
* - Replace it by pointer to start of our returncode
|
|
* push $newret
|
|
* - And call the original function
|
|
* jmp $orgfun
|
|
* - Remove the arguments no longer needed
|
|
* newret: add esp, <nrofargs>
|
|
* - Push the original returnvalue on the stack
|
|
* pushl <poppedvalue>
|
|
* - And return to it.
|
|
* ret
|
|
*/
|
|
|
|
/* FIXME: The function stub is not reentrant. */
|
|
|
|
((LPBYTE)&(stub->popl))[0] = 0x8f;
|
|
((LPBYTE)&(stub->popl))[1] = 0x05;
|
|
stub->addr_popped = (DWORD)&(stub->oldret);
|
|
stub->pushl1 = 0x68;
|
|
stub->newret = (DWORD)&(stub->addesp);
|
|
stub->pushl2 = 0x68;
|
|
stub->origfun = (DWORD)fun;
|
|
stub->ret1 = 0xc3;
|
|
((LPBYTE)&(stub->addesp))[0]=0x83;
|
|
((LPBYTE)&(stub->addesp))[1]=0xc4;
|
|
stub->nrofargs = nrofargs;
|
|
stub->pushl3 = 0x68;
|
|
/* filled out by entrycode */
|
|
stub->oldret = 0xdeadbeef;
|
|
stub->ret2 = 0xc3;
|
|
fun=(FARPROC32)stub;
|
|
}
|
|
if (!fun) {
|
|
FIXME(win32,"function %s not found: %s\n",funcName,dlerror());
|
|
return fun;
|
|
}
|
|
fun = SNOOP_GetProcAddress32(wm->module,funcName,stub-wm->binfmt.elf.stubs,fun);
|
|
return (FARPROC32)fun;
|
|
}
|
|
#else
|
|
|
|
HMODULE32
|
|
ELF_LoadLibraryEx32A(LPCSTR libname,PDB32 *process,HANDLE32 hf,DWORD flags) {
|
|
return 0;
|
|
}
|
|
FARPROC32
|
|
ELF_FindExportedFunction( PDB32 *process,WINE_MODREF *wm, LPCSTR funcName) {
|
|
return (FARPROC32)0;
|
|
}
|
|
|
|
#endif
|