pe_image.c

君正早期ucos系统(只有早期的才不没有打包成库),MPLAYER,文件系统,图片解码,浏览,电子书,录音,想学ucos,识货的人就下吧 russblock fmradio explore set

        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;


    

    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;
}

/******************************************************************************
 * 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)
{
#if !defined(__FreeBSD__) && !defined(__DragonFly__)
    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;
}