Exemple #1
0
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);
	}
}
Exemple #2
0
/**********************************************************************
 *  get_data_file_ptr
 *
 * Get a pointer to a given offset in a file mapped as data file.
 */
static const void *get_data_file_ptr( const void *base, DWORD offset )
{
    const IMAGE_NT_HEADERS *nt = PE_HEADER(base);
    const IMAGE_SECTION_HEADER *sec = (IMAGE_SECTION_HEADER *)((char *)&nt->OptionalHeader +
                                                               nt->FileHeader.SizeOfOptionalHeader);
    int i;

    /* find the section containing the virtual address */
    for (i = 0; i < nt->FileHeader.NumberOfSections; i++, sec++)
    {
        if ((sec->VirtualAddress <= offset) && (sec->VirtualAddress + sec->SizeOfRawData > offset))
            return (char *)base + sec->PointerToRawData + (offset - sec->VirtualAddress);
    }
    return NULL;
}
Exemple #3
0
/**********************************************************************
 *  get_resdir
 *
 * Get the resource directory of a PE module
 */
static const IMAGE_RESOURCE_DIRECTORY* get_resdir( HMODULE hmod )
{
    const IMAGE_DATA_DIRECTORY *dir;
    const IMAGE_RESOURCE_DIRECTORY *ret = NULL;
    const void *base = get_module_base( hmod );

    if (base)
    {
        dir = &PE_HEADER(base)->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE];
        if (dir->Size && dir->VirtualAddress)
        {
            if (is_data_file_module(hmod)) ret = get_data_file_ptr( base, dir->VirtualAddress );
            else ret = (IMAGE_RESOURCE_DIRECTORY *)((char *)base + dir->VirtualAddress);
        }
    }
    return ret;
}
Exemple #4
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;
}
Exemple #5
0
/**********************************************************************
 *			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);

    // 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 )
    {
        dbg_printf("Trying to load PE image for unsupported architecture (");
        switch (nt->FileHeader.Machine)
        {
        case IMAGE_FILE_MACHINE_UNKNOWN: dbg_printf("Unknown"); break;
        case IMAGE_FILE_MACHINE_I860:    dbg_printf("I860"); break;
        case IMAGE_FILE_MACHINE_R3000:   dbg_printf("R3000"); break;
        case IMAGE_FILE_MACHINE_R4000:   dbg_printf("R4000"); break;
        case IMAGE_FILE_MACHINE_R10000:  dbg_printf("R10000"); break;
        case IMAGE_FILE_MACHINE_ALPHA:   dbg_printf("Alpha"); break;
        case IMAGE_FILE_MACHINE_POWERPC: dbg_printf("PowerPC"); break;
        default: dbg_printf("Unknown-%04x", nt->FileHeader.Machine); break;
        }
        dbg_printf(")\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 &&
        !strstr(filename, "xanlib.dll"))
    {
        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;
}
Exemple #6
0
/* 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 )
{
	unsigned short			* ordinals;
	unsigned long			* function;
	unsigned 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;
	unsigned 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= (unsigned short*)  RVA(exports->AddressOfNameOrdinals);
	function= (unsigned long*)   RVA(exports->AddressOfFunctions);
	name	= (unsigned 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 );
	}
}
Exemple #7
0
void WINAPI VXD_Win32s( CONTEXT86 *context )
{
    switch (AX_reg(context))
    {
    case 0x0000: /* Get Version */
        /*
         * Input:   None
         *
         * Output:  EAX: LoWord: Win32s Version (1.30)
         *               HiWord: VxD Version (200)
         *
         *          EBX: Build (172)
         *
         *          ECX: ???   (1)
         *
         *          EDX: Debugging Flags
         *
         *          EDI: Error Flag
         *               0 if OK,
         *               1 if VMCPD VxD not found
         */

        TRACE("GetVersion()\n");

	context->Eax = VXD_WinVersion() | (200 << 16);
        context->Ebx = 0;
        context->Ecx = 0;
        context->Edx = 0;
        context->Edi = 0;

        /*
         * If this is the first time we are called for this process,
         * hack the memory image of WIN32S16 so that it doesn't try
         * to access the GDT directly ...
         *
         * The first code segment of WIN32S16 (version 1.30) contains
         * an unexported function somewhere between the exported functions
         * SetFS and StackLinearToSegmented that tries to find a selector
         * in the LDT that maps to the memory image of the LDT itself.
         * If it succeeds, it stores this selector into a global variable
         * which will be used to speed up execution by using this selector
         * to modify the LDT directly instead of using the DPMI calls.
         *
         * To perform this search of the LDT, this function uses the
         * sgdt and sldt instructions to find the linear address of
         * the (GDT and then) LDT. While those instructions themselves
         * execute without problem, the linear address that sgdt returns
         * points (at least under Linux) to the kernel address space, so
         * that any subsequent access leads to a segfault.
         *
         * Fortunately, WIN32S16 still contains as a fallback option the
         * mechanism of using DPMI calls to modify LDT selectors instead
         * of direct writes to the LDT. Thus we can circumvent the problem
         * by simply replacing the first byte of the offending function
         * with an 'retf' instruction. This means that the global variable
         * supposed to contain the LDT alias selector will remain zero,
         * and hence WIN32S16 will fall back to using DPMI calls.
         *
         * The heuristic we employ to _find_ that function is as follows:
         * We search between the addresses of the exported symbols SetFS
         * and StackLinearToSegmented for the byte sequence '0F 01 04'
         * (this is the opcode of 'sgdt [si]'). We then search backwards
         * from this address for the last occurrence of 'CB' (retf) that marks
         * the end of the preceeding function. The following byte (which
         * should now be the first byte of the function we are looking for)
         * will be replaced by 'CB' (retf).
         *
         * This heuristic works for the retail as well as the debug version
         * of Win32s version 1.30. For versions earlier than that this
         * hack should not be necessary at all, since the whole mechanism
         * ('PERF130') was introduced only in 1.30 to improve the overall
         * performance of Win32s.
         */

        if (!W32S_offset)
        {
            HMODULE16 hModule = GetModuleHandle16("win32s16");
            SEGPTR func1 = (SEGPTR)GetProcAddress16(hModule, "SetFS");
            SEGPTR func2 = (SEGPTR)GetProcAddress16(hModule, "StackLinearToSegmented");

            if (   hModule && func1 && func2
                && SELECTOROF(func1) == SELECTOROF(func2))
            {
                BYTE *start = MapSL(func1);
                BYTE *end   = MapSL(func2);
                BYTE *p, *retv = NULL;
                int found = 0;

                for (p = start; p < end; p++)
                    if (*p == 0xCB) found = 0, retv = p;
                    else if (*p == 0x0F) found = 1;
                    else if (*p == 0x01 && found == 1) found = 2;
                    else if (*p == 0x04 && found == 2) { found = 3; break; }
                    else found = 0;

                if (found == 3 && retv)
                {
                    TRACE("PERF130 hack: "
                               "Replacing byte %02X at offset %04X:%04X\n",
                               *(retv+1), SELECTOROF(func1),
                                          OFFSETOF(func1) + retv+1-start);

                    *(retv+1) = (BYTE)0xCB;
                }
            }
        }

        /*
         * Mark process as Win32s, so that subsequent DPMI calls
         * will perform the W32S_APP2WINE/W32S_WINE2APP address shift.
         */
        W32S_offset = 0x10000;
        break;


    case 0x0001: /* Install Exception Handling */
        /*
         * Input:   EBX: Flat address of W32SKRNL Exception Data
         *
         *          ECX: LoWord: Flat Code Selector
         *               HiWord: Flat Data Selector
         *
         *          EDX: Flat address of W32SKRNL Exception Handler
         *               (this is equal to W32S_BackTo32 + 0x40)
         *
         *          ESI: SEGPTR KERNEL.HASGPHANDLER
         *
         *          EDI: SEGPTR phCurrentTask (KERNEL.THHOOK + 0x10)
         *
         * Output:  EAX: 0 if OK
         */

        TRACE("[0001] EBX=%lx ECX=%lx EDX=%lx ESI=%lx EDI=%lx\n",
                   context->Ebx, context->Ecx, context->Edx,
                   context->Esi, context->Edi);

        /* FIXME */

        context->Eax = 0;
        break;


    case 0x0002: /* Set Page Access Flags */
        /*
         * Input:   EBX: New access flags
         *               Bit 2: User Page if set, Supervisor Page if clear
         *               Bit 1: Read-Write if set, Read-Only if clear
         *
         *          ECX: Size of memory area to change
         *
         *          EDX: Flat start address of memory area
         *
         * Output:  EAX: Size of area changed
         */

        TRACE("[0002] EBX=%lx ECX=%lx EDX=%lx\n",
                   context->Ebx, context->Ecx, context->Edx);

        /* FIXME */

        context->Eax = context->Ecx;
        break;


    case 0x0003: /* Get Page Access Flags */
        /*
         * Input:   EDX: Flat address of page to query
         *
         * Output:  EAX: Page access flags
         *               Bit 2: User Page if set, Supervisor Page if clear
         *               Bit 1: Read-Write if set, Read-Only if clear
         */

        TRACE("[0003] EDX=%lx\n", context->Edx);

        /* FIXME */

        context->Eax = 6;
        break;


    case 0x0004: /* Map Module */
        /*
         * Input:   ECX: IMTE (offset in Module Table) of new module
         *
         *          EDX: Flat address of Win32s Module Table
         *
         * Output:  EAX: 0 if OK
         */

    if (!context->Edx || CX_reg(context) == 0xFFFF)
    {
        TRACE("MapModule: Initialization call\n");
        context->Eax = 0;
    }
    else
    {
        /*
         * Structure of a Win32s Module Table Entry:
         */
        struct Win32sModule
        {
            DWORD  flags;
            DWORD  flatBaseAddr;
            LPCSTR moduleName;
            LPCSTR pathName;
            LPCSTR unknown;
            LPBYTE baseAddr;
            DWORD  hModule;
            DWORD  relocDelta;
        };

        /*
         * Note: This function should set up a demand-paged memory image
         *       of the given module. Since mmap does not allow file offsets
         *       not aligned at 1024 bytes, we simply load the image fully
         *       into memory.
         */

        struct Win32sModule *moduleTable =
                            (struct Win32sModule *)W32S_APP2WINE(context->Edx);
        struct Win32sModule *module = moduleTable + context->Ecx;

        IMAGE_NT_HEADERS *nt_header = PE_HEADER(module->baseAddr);
        IMAGE_SECTION_HEADER *pe_seg = PE_SECTIONS(module->baseAddr);

        HFILE image = _lopen(module->pathName, OF_READ);
        BOOL error = (image == HFILE_ERROR);
        UINT i;

        TRACE("MapModule: Loading %s\n", module->pathName);

        for (i = 0;
             !error && i < nt_header->FileHeader.NumberOfSections;
             i++, pe_seg++)
            if(!(pe_seg->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
            {
                DWORD  off  = pe_seg->PointerToRawData;
                DWORD  len  = pe_seg->SizeOfRawData;
                LPBYTE addr = module->baseAddr + pe_seg->VirtualAddress;

                TRACE("MapModule: "
                           "Section %d at %08lx from %08lx len %08lx\n",
                           i, (DWORD)addr, off, len);

                if (   _llseek(image, off, SEEK_SET) != off
                    || _lread(image, addr, len) != len)
                    error = TRUE;
            }

        _lclose(image);

        if (error)
            ERR("MapModule: Unable to load %s\n", module->pathName);

        else if (module->relocDelta != 0)
        {
            IMAGE_DATA_DIRECTORY *dir = nt_header->OptionalHeader.DataDirectory
                                      + IMAGE_DIRECTORY_ENTRY_BASERELOC;
            IMAGE_BASE_RELOCATION *r = (IMAGE_BASE_RELOCATION *)
                (dir->Size? module->baseAddr + dir->VirtualAddress : 0);

            TRACE("MapModule: Reloc delta %08lx\n", module->relocDelta);

            while (r && r->VirtualAddress)
            {
                LPBYTE page  = module->baseAddr + r->VirtualAddress;
                WORD *TypeOffset = (WORD *)(r + 1);
                int count = (r->SizeOfBlock - sizeof(*r)) / sizeof(*TypeOffset);

                TRACE("MapModule: %d relocations for page %08lx\n",
                           count, (DWORD)page);

                for(i = 0; i < count; i++)
                {
                    int offset = TypeOffset[i] & 0xFFF;
                    int type   = TypeOffset[i] >> 12;
                    switch(type)
                    {
                    case IMAGE_REL_BASED_ABSOLUTE:
                        break;
                    case IMAGE_REL_BASED_HIGH:
                        *(WORD *)(page+offset) += HIWORD(module->relocDelta);
                        break;
                    case IMAGE_REL_BASED_LOW:
                        *(WORD *)(page+offset) += LOWORD(module->relocDelta);
                        break;
                    case IMAGE_REL_BASED_HIGHLOW:
                        *(DWORD*)(page+offset) += module->relocDelta;
                        break;
                    default:
                        WARN("MapModule: Unsupported fixup type\n");
                        break;
                    }
                }

                r = (IMAGE_BASE_RELOCATION *)((LPBYTE)r + r->SizeOfBlock);
            }
        }

        context->Eax = 0;
        RESET_CFLAG(context);
    }
    break;


    case 0x0005: /* UnMap Module */
        /*
         * Input:   EDX: Flat address of module image
         *
         * Output:  EAX: 1 if OK
         */

        TRACE("UnMapModule: %lx\n", (DWORD)W32S_APP2WINE(context->Edx));

        /* As we didn't map anything, there's nothing to unmap ... */

        context->Eax = 1;
        break;


    case 0x0006: /* VirtualAlloc */
        /*
         * Input:   ECX: Current Process
         *
         *          EDX: Flat address of arguments on stack
         *
         *   DWORD *retv     [out] Flat base address of allocated region
         *   LPVOID base     [in]  Flat address of region to reserve/commit
         *   DWORD  size     [in]  Size of region
         *   DWORD  type     [in]  Type of allocation
         *   DWORD  prot     [in]  Type of access protection
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack  = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0]);
        LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1]);
        DWORD  size   = stack[2];
        DWORD  type   = stack[3];
        DWORD  prot   = stack[4];
        DWORD  result;

        TRACE("VirtualAlloc(%lx, %lx, %lx, %lx, %lx)\n",
                   (DWORD)retv, (DWORD)base, size, type, prot);

        if (type & 0x80000000)
        {
            WARN("VirtualAlloc: strange type %lx\n", type);
            type &= 0x7fffffff;
        }

        if (!base && (type & MEM_COMMIT) && prot == PAGE_READONLY)
        {
            WARN("VirtualAlloc: NLS hack, allowing write access!\n");
            prot = PAGE_READWRITE;
        }

        result = (DWORD)VirtualAlloc(base, size, type, prot);

        if (W32S_WINE2APP(result))
            *retv            = W32S_WINE2APP(result),
            context->Eax = STATUS_SUCCESS;
        else
            *retv            = 0,
            context->Eax = STATUS_NO_MEMORY;  /* FIXME */
    }
    break;


    case 0x0007: /* VirtualFree */
        /*
         * Input:   ECX: Current Process
         *
         *          EDX: Flat address of arguments on stack
         *
         *   DWORD *retv     [out] TRUE if success, FALSE if failure
         *   LPVOID base     [in]  Flat address of region
         *   DWORD  size     [in]  Size of region
         *   DWORD  type     [in]  Type of operation
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack  = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0]);
        LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1]);
        DWORD  size   = stack[2];
        DWORD  type   = stack[3];
        DWORD  result;

        TRACE("VirtualFree(%lx, %lx, %lx, %lx)\n",
                   (DWORD)retv, (DWORD)base, size, type);

        result = VirtualFree(base, size, type);

        if (result)
            *retv            = TRUE,
            context->Eax = STATUS_SUCCESS;
        else
            *retv            = FALSE,
            context->Eax = STATUS_NO_MEMORY;  /* FIXME */
    }
    break;


    case 0x0008: /* VirtualProtect */
        /*
         * Input:   ECX: Current Process
         *
         *          EDX: Flat address of arguments on stack
         *
         *   DWORD *retv     [out] TRUE if success, FALSE if failure
         *   LPVOID base     [in]  Flat address of region
         *   DWORD  size     [in]  Size of region
         *   DWORD  new_prot [in]  Desired access protection
         *   DWORD *old_prot [out] Previous access protection
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack    = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD *retv     = (DWORD *)W32S_APP2WINE(stack[0]);
        LPVOID base     = (LPVOID) W32S_APP2WINE(stack[1]);
        DWORD  size     = stack[2];
        DWORD  new_prot = stack[3];
        DWORD *old_prot = (DWORD *)W32S_APP2WINE(stack[4]);
        DWORD  result;

        TRACE("VirtualProtect(%lx, %lx, %lx, %lx, %lx)\n",
                   (DWORD)retv, (DWORD)base, size, new_prot, (DWORD)old_prot);

        result = VirtualProtect(base, size, new_prot, old_prot);

        if (result)
            *retv            = TRUE,
            context->Eax = STATUS_SUCCESS;
        else
            *retv            = FALSE,
            context->Eax = STATUS_NO_MEMORY;  /* FIXME */
    }
    break;


    case 0x0009: /* VirtualQuery */
        /*
         * Input:   ECX: Current Process
         *
         *          EDX: Flat address of arguments on stack
         *
         *   DWORD *retv                     [out] Nr. bytes returned
         *   LPVOID base                     [in]  Flat address of region
         *   LPMEMORY_BASIC_INFORMATION info [out] Info buffer
         *   DWORD  len                      [in]  Size of buffer
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack  = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0]);
        LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1]);
        LPMEMORY_BASIC_INFORMATION info =
                        (LPMEMORY_BASIC_INFORMATION)W32S_APP2WINE(stack[2]);
        DWORD  len    = stack[3];
        DWORD  result;

        TRACE("VirtualQuery(%lx, %lx, %lx, %lx)\n",
                   (DWORD)retv, (DWORD)base, (DWORD)info, len);

        result = VirtualQuery(base, info, len);

        *retv            = result;
        context->Eax = STATUS_SUCCESS;
    }
    break;


    case 0x000A: /* SetVirtMemProcess */
        /*
         * Input:   ECX: Process Handle
         *
         *          EDX: Flat address of region
         *
         * Output:  EAX: NtStatus
         */

        TRACE("[000a] ECX=%lx EDX=%lx\n",
                   context->Ecx, context->Edx);

        /* FIXME */

        context->Eax = STATUS_SUCCESS;
        break;


    case 0x000B: /* ??? some kind of cleanup */
        /*
         * Input:   ECX: Process Handle
         *
         * Output:  EAX: NtStatus
         */

        TRACE("[000b] ECX=%lx\n", context->Ecx);

        /* FIXME */

        context->Eax = STATUS_SUCCESS;
        break;


    case 0x000C: /* Set Debug Flags */
        /*
         * Input:   EDX: Debug Flags
         *
         * Output:  EDX: Previous Debug Flags
         */

        FIXME("[000c] EDX=%lx\n", context->Edx);

        /* FIXME */

        context->Edx = 0;
        break;


    case 0x000D: /* NtCreateSection */
        /*
         * Input:   EDX: Flat address of arguments on stack
         *
         *   HANDLE32 *retv      [out] Handle of Section created
         *   DWORD  flags1       [in]  (?? unknown ??)
         *   DWORD  atom         [in]  Name of Section to create
         *   LARGE_INTEGER *size [in]  Size of Section
         *   DWORD  protect      [in]  Access protection
         *   DWORD  flags2       [in]  (?? unknown ??)
         *   HFILE32 hFile       [in]  Handle of file to map
         *   DWORD  psp          [in]  (Win32s: PSP that hFile belongs to)
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack    = (DWORD *)   W32S_APP2WINE(context->Edx);
        HANDLE *retv  = (HANDLE *)W32S_APP2WINE(stack[0]);
        DWORD  flags1   = stack[1];
        DWORD  atom     = stack[2];
        LARGE_INTEGER *size = (LARGE_INTEGER *)W32S_APP2WINE(stack[3]);
        DWORD  protect  = stack[4];
        DWORD  flags2   = stack[5];
        HANDLE hFile    = DosFileHandleToWin32Handle(stack[6]);
        DWORD  psp      = stack[7];

        HANDLE result = INVALID_HANDLE_VALUE;
        char name[128];

        TRACE("NtCreateSection(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
                   (DWORD)retv, flags1, atom, (DWORD)size, protect, flags2,
                   (DWORD)hFile, psp);

        if (!atom || GlobalGetAtomNameA(atom, name, sizeof(name)))
        {
            TRACE("NtCreateSection: name=%s\n", atom? name : NULL);

            result = CreateFileMappingA(hFile, NULL, protect,
                                          size? size->s.HighPart : 0,
                                          size? size->s.LowPart  : 0,
                                          atom? name : NULL);
        }

        if (result == INVALID_HANDLE_VALUE)
            WARN("NtCreateSection: failed!\n");
        else
            TRACE("NtCreateSection: returned %lx\n", (DWORD)result);

        if (result != INVALID_HANDLE_VALUE)
            *retv            = result,
            context->Eax = STATUS_SUCCESS;
        else
            *retv            = result,
            context->Eax = STATUS_NO_MEMORY;   /* FIXME */
    }
    break;


    case 0x000E: /* NtOpenSection */
        /*
         * Input:   EDX: Flat address of arguments on stack
         *
         *   HANDLE32 *retv  [out] Handle of Section opened
         *   DWORD  protect  [in]  Access protection
         *   DWORD  atom     [in]  Name of Section to create
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack    = (DWORD *)W32S_APP2WINE(context->Edx);
        HANDLE *retv  = (HANDLE *)W32S_APP2WINE(stack[0]);
        DWORD  protect  = stack[1];
        DWORD  atom     = stack[2];

        HANDLE result = INVALID_HANDLE_VALUE;
        char name[128];

        TRACE("NtOpenSection(%lx, %lx, %lx)\n",
                   (DWORD)retv, protect, atom);

        if (atom && GlobalGetAtomNameA(atom, name, sizeof(name)))
        {
            TRACE("NtOpenSection: name=%s\n", name);

            result = OpenFileMappingA(protect, FALSE, name);
        }

        if (result == INVALID_HANDLE_VALUE)
            WARN("NtOpenSection: failed!\n");
        else
            TRACE("NtOpenSection: returned %lx\n", (DWORD)result);

        if (result != INVALID_HANDLE_VALUE)
            *retv            = result,
            context->Eax = STATUS_SUCCESS;
        else
            *retv            = result,
            context->Eax = STATUS_NO_MEMORY;   /* FIXME */
    }
    break;


    case 0x000F: /* NtCloseSection */
        /*
         * Input:   EDX: Flat address of arguments on stack
         *
         *   HANDLE32 handle  [in]  Handle of Section to close
         *   DWORD *id        [out] Unique ID  (?? unclear ??)
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack    = (DWORD *)W32S_APP2WINE(context->Edx);
        HANDLE handle = stack[0];
        DWORD *id       = (DWORD *)W32S_APP2WINE(stack[1]);

        TRACE("NtCloseSection(%lx, %lx)\n", (DWORD)handle, (DWORD)id);

        CloseHandle(handle);
        if (id) *id = 0; /* FIXME */

        context->Eax = STATUS_SUCCESS;
    }
    break;


    case 0x0010: /* NtDupSection */
        /*
         * Input:   EDX: Flat address of arguments on stack
         *
         *   HANDLE32 handle  [in]  Handle of Section to duplicate
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack    = (DWORD *)W32S_APP2WINE(context->Edx);
        HANDLE handle = stack[0];
        HANDLE new_handle;

        TRACE("NtDupSection(%lx)\n", (DWORD)handle);

        DuplicateHandle( GetCurrentProcess(), handle,
                         GetCurrentProcess(), &new_handle,
                         0, FALSE, DUPLICATE_SAME_ACCESS );
        context->Eax = STATUS_SUCCESS;
    }
    break;


    case 0x0011: /* NtMapViewOfSection */
        /*
         * Input:   EDX: Flat address of arguments on stack
         *
         *   HANDLE32 SectionHandle       [in]     Section to be mapped
         *   DWORD    ProcessHandle       [in]     Process to be mapped into
         *   DWORD *  BaseAddress         [in/out] Address to be mapped at
         *   DWORD    ZeroBits            [in]     (?? unclear ??)
         *   DWORD    CommitSize          [in]     (?? unclear ??)
         *   LARGE_INTEGER *SectionOffset [in]     Offset within section
         *   DWORD *  ViewSize            [in]     Size of view
         *   DWORD    InheritDisposition  [in]     (?? unclear ??)
         *   DWORD    AllocationType      [in]     (?? unclear ??)
         *   DWORD    Protect             [in]     Access protection
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *  stack          = (DWORD *)W32S_APP2WINE(context->Edx);
        HANDLE SectionHandle  = stack[0];
        DWORD    ProcessHandle  = stack[1]; /* ignored */
        DWORD *  BaseAddress    = (DWORD *)W32S_APP2WINE(stack[2]);
        DWORD    ZeroBits       = stack[3];
        DWORD    CommitSize     = stack[4];
        LARGE_INTEGER *SectionOffset = (LARGE_INTEGER *)W32S_APP2WINE(stack[5]);
        DWORD *  ViewSize       = (DWORD *)W32S_APP2WINE(stack[6]);
        DWORD    InheritDisposition = stack[7];
        DWORD    AllocationType = stack[8];
        DWORD    Protect        = stack[9];

        LPBYTE address = (LPBYTE)(BaseAddress?
			W32S_APP2WINE(*BaseAddress) : 0);
        DWORD  access = 0, result;

        switch (Protect & ~(PAGE_GUARD|PAGE_NOCACHE))
        {
            case PAGE_READONLY:           access = FILE_MAP_READ;  break;
            case PAGE_READWRITE:          access = FILE_MAP_WRITE; break;
            case PAGE_WRITECOPY:          access = FILE_MAP_COPY;  break;

            case PAGE_EXECUTE_READ:       access = FILE_MAP_READ;  break;
            case PAGE_EXECUTE_READWRITE:  access = FILE_MAP_WRITE; break;
            case PAGE_EXECUTE_WRITECOPY:  access = FILE_MAP_COPY;  break;
        }

        TRACE("NtMapViewOfSection"
                   "(%lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx, %lx)\n",
                   (DWORD)SectionHandle, ProcessHandle, (DWORD)BaseAddress,
                   ZeroBits, CommitSize, (DWORD)SectionOffset, (DWORD)ViewSize,
                   InheritDisposition, AllocationType, Protect);
        TRACE("NtMapViewOfSection: "
                   "base=%lx, offset=%lx, size=%lx, access=%lx\n",
                   (DWORD)address, SectionOffset? SectionOffset->s.LowPart : 0,
                   ViewSize? *ViewSize : 0, access);

        result = (DWORD)MapViewOfFileEx(SectionHandle, access,
                            SectionOffset? SectionOffset->s.HighPart : 0,
                            SectionOffset? SectionOffset->s.LowPart  : 0,
                            ViewSize? *ViewSize : 0, address);

        TRACE("NtMapViewOfSection: result=%lx\n", result);

        if (W32S_WINE2APP(result))
        {
            if (BaseAddress) *BaseAddress = W32S_WINE2APP(result);
            context->Eax = STATUS_SUCCESS;
        }
        else
            context->Eax = STATUS_NO_MEMORY; /* FIXME */
    }
    break;


    case 0x0012: /* NtUnmapViewOfSection */
        /*
         * Input:   EDX: Flat address of arguments on stack
         *
         *   DWORD  ProcessHandle  [in]  Process (defining address space)
         *   LPBYTE BaseAddress    [in]  Base address of view to be unmapped
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack          = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD  ProcessHandle  = stack[0]; /* ignored */
        LPBYTE BaseAddress    = (LPBYTE)W32S_APP2WINE(stack[1]);

        TRACE("NtUnmapViewOfSection(%lx, %lx)\n",
                   ProcessHandle, (DWORD)BaseAddress);

        UnmapViewOfFile(BaseAddress);

        context->Eax = STATUS_SUCCESS;
    }
    break;


    case 0x0013: /* NtFlushVirtualMemory */
        /*
         * Input:   EDX: Flat address of arguments on stack
         *
         *   DWORD   ProcessHandle  [in]  Process (defining address space)
         *   LPBYTE *BaseAddress    [in?] Base address of range to be flushed
         *   DWORD  *ViewSize       [in?] Number of bytes to be flushed
         *   DWORD  *unknown        [???] (?? unknown ??)
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack          = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD  ProcessHandle  = stack[0]; /* ignored */
        DWORD *BaseAddress    = (DWORD *)W32S_APP2WINE(stack[1]);
        DWORD *ViewSize       = (DWORD *)W32S_APP2WINE(stack[2]);
        DWORD *unknown        = (DWORD *)W32S_APP2WINE(stack[3]);

        LPBYTE address = (LPBYTE)(BaseAddress? W32S_APP2WINE(*BaseAddress) : 0);
        DWORD  size    = ViewSize? *ViewSize : 0;

        TRACE("NtFlushVirtualMemory(%lx, %lx, %lx, %lx)\n",
                   ProcessHandle, (DWORD)BaseAddress, (DWORD)ViewSize,
                   (DWORD)unknown);
        TRACE("NtFlushVirtualMemory: base=%lx, size=%lx\n",
                   (DWORD)address, size);

        FlushViewOfFile(address, size);

        context->Eax = STATUS_SUCCESS;
    }
    break;


    case 0x0014: /* Get/Set Debug Registers */
        /*
         * Input:   ECX: 0 if Get, 1 if Set
         *
         *          EDX: Get: Flat address of buffer to receive values of
         *                    debug registers DR0 .. DR7
         *               Set: Flat address of buffer containing values of
         *                    debug registers DR0 .. DR7 to be set
         * Output:  None
         */

        FIXME("[0014] ECX=%lx EDX=%lx\n",
                   context->Ecx, context->Edx);

        /* FIXME */
        break;


    case 0x0015: /* Set Coprocessor Emulation Flag */
        /*
         * Input:   EDX: 0 to deactivate, 1 to activate coprocessor emulation
         *
         * Output:  None
         */

        TRACE("[0015] EDX=%lx\n", context->Edx);

        /* We don't care, as we always have a coprocessor anyway */
        break;


    case 0x0016: /* Init Win32S VxD PSP */
        /*
         * If called to query required PSP size:
         *
         *     Input:  EBX: 0
         *     Output: EDX: Required size of Win32s VxD PSP
         *
         * If called to initialize allocated PSP:
         *
         *     Input:  EBX: LoWord: Selector of Win32s VxD PSP
         *                  HiWord: Paragraph of Win32s VxD PSP (DOSMEM)
         *     Output: None
         */

        if (context->Ebx == 0)
            context->Edx = 0x80;
        else
        {
            PDB16 *psp = MapSL( MAKESEGPTR( BX_reg(context), 0 ));
            psp->nbFiles = 32;
            psp->fileHandlesPtr = MAKELONG(HIWORD(context->Ebx), 0x5c);
            memset((LPBYTE)psp + 0x5c, '\xFF', 32);
        }
        break;


    case 0x0017: /* Set Break Point */
        /*
         * Input:   EBX: Offset of Break Point
         *          CX:  Selector of Break Point
         *
         * Output:  None
         */

        FIXME("[0017] EBX=%lx CX=%x\n",
                   context->Ebx, CX_reg(context));

        /* FIXME */
        break;


    case 0x0018: /* VirtualLock */
        /*
         * Input:   ECX: Current Process
         *
         *          EDX: Flat address of arguments on stack
         *
         *   DWORD *retv     [out] TRUE if success, FALSE if failure
         *   LPVOID base     [in]  Flat address of range to lock
         *   DWORD  size     [in]  Size of range
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack  = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0]);
        LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1]);
        DWORD  size   = stack[2];
        DWORD  result;

        TRACE("VirtualLock(%lx, %lx, %lx)\n",
                   (DWORD)retv, (DWORD)base, size);

        result = VirtualLock(base, size);

        if (result)
            *retv            = TRUE,
            context->Eax = STATUS_SUCCESS;
        else
            *retv            = FALSE,
            context->Eax = STATUS_NO_MEMORY;  /* FIXME */
    }
    break;


    case 0x0019: /* VirtualUnlock */
        /*
         * Input:   ECX: Current Process
         *
         *          EDX: Flat address of arguments on stack
         *
         *   DWORD *retv     [out] TRUE if success, FALSE if failure
         *   LPVOID base     [in]  Flat address of range to unlock
         *   DWORD  size     [in]  Size of range
         *
         * Output:  EAX: NtStatus
         */
    {
        DWORD *stack  = (DWORD *)W32S_APP2WINE(context->Edx);
        DWORD *retv   = (DWORD *)W32S_APP2WINE(stack[0]);
        LPVOID base   = (LPVOID) W32S_APP2WINE(stack[1]);
        DWORD  size   = stack[2];
        DWORD  result;

        TRACE("VirtualUnlock(%lx, %lx, %lx)\n",
                   (DWORD)retv, (DWORD)base, size);

        result = VirtualUnlock(base, size);

        if (result)
            *retv            = TRUE,
            context->Eax = STATUS_SUCCESS;
        else
            *retv            = FALSE,
            context->Eax = STATUS_NO_MEMORY;  /* FIXME */
    }
    break;


    case 0x001A: /* KGetSystemInfo */
        /*
         * Input:   None
         *
         * Output:  ECX:  Start of sparse memory arena
         *          EDX:  End of sparse memory arena
         */

        TRACE("KGetSystemInfo()\n");

        /*
         * Note: Win32s reserves 0GB - 2GB for Win 3.1 and uses 2GB - 4GB as
         *       sparse memory arena. We do it the other way around, since
         *       we have to reserve 3GB - 4GB for Linux, and thus use
         *       0GB - 3GB as sparse memory arena.
         *
         *       FIXME: What about other OSes ?
         */

        context->Ecx = W32S_WINE2APP(0x00000000);
        context->Edx = W32S_WINE2APP(0xbfffffff);
        break;


    case 0x001B: /* KGlobalMemStat */
        /*
         * Input:   ESI: Flat address of buffer to receive memory info
         *
         * Output:  None
         */
    {
        struct Win32sMemoryInfo
        {
            DWORD DIPhys_Count;       /* Total physical pages */
            DWORD DIFree_Count;       /* Free physical pages */
            DWORD DILin_Total_Count;  /* Total virtual pages (private arena) */
            DWORD DILin_Total_Free;   /* Free virtual pages (private arena) */

            DWORD SparseTotal;        /* Total size of sparse arena (bytes ?) */
            DWORD SparseFree;         /* Free size of sparse arena (bytes ?) */
        };

        struct Win32sMemoryInfo *info =
                       (struct Win32sMemoryInfo *)W32S_APP2WINE(context->Esi);

        FIXME("KGlobalMemStat(%lx)\n", (DWORD)info);

        /* FIXME */
    }
    break;


    case 0x001C: /* Enable/Disable Exceptions */
        /*
         * Input:   ECX: 0 to disable, 1 to enable exception handling
         *
         * Output:  None
         */

        TRACE("[001c] ECX=%lx\n", context->Ecx);

        /* FIXME */
        break;


    case 0x001D: /* VirtualAlloc called from 16-bit code */
        /*
         * Input:   EDX: Segmented address of arguments on stack
         *
         *   LPVOID base     [in]  Flat address of region to reserve/commit
         *   DWORD  size     [in]  Size of region
         *   DWORD  type     [in]  Type of allocation
         *   DWORD  prot     [in]  Type of access protection
         *
         * Output:  EAX: NtStatus
         *          EDX: Flat base address of allocated region
         */
    {
        DWORD *stack  = MapSL( MAKESEGPTR( LOWORD(context->Edx), HIWORD(context->Edx) ));
        LPVOID base   = (LPVOID)W32S_APP2WINE(stack[0]);
        DWORD  size   = stack[1];
        DWORD  type   = stack[2];
        DWORD  prot   = stack[3];
        DWORD  result;

        TRACE("VirtualAlloc16(%lx, %lx, %lx, %lx)\n",
                   (DWORD)base, size, type, prot);

        if (type & 0x80000000)
        {
            WARN("VirtualAlloc16: strange type %lx\n", type);
            type &= 0x7fffffff;
        }

        result = (DWORD)VirtualAlloc(base, size, type, prot);

        if (W32S_WINE2APP(result))
            context->Edx = W32S_WINE2APP(result),
            context->Eax = STATUS_SUCCESS;
        else
            context->Edx = 0,
            context->Eax = STATUS_NO_MEMORY;  /* FIXME */
	TRACE("VirtualAlloc16: returning base %lx\n", context->Edx);
    }
    break;


    case 0x001E: /* VirtualFree called from 16-bit code */
        /*
         * Input:   EDX: Segmented address of arguments on stack
         *
         *   LPVOID base     [in]  Flat address of region
         *   DWORD  size     [in]  Size of region
         *   DWORD  type     [in]  Type of operation
         *
         * Output:  EAX: NtStatus
         *          EDX: TRUE if success, FALSE if failure
         */
    {
        DWORD *stack  = MapSL( MAKESEGPTR( LOWORD(context->Edx), HIWORD(context->Edx) ));
        LPVOID base   = (LPVOID)W32S_APP2WINE(stack[0]);
        DWORD  size   = stack[1];
        DWORD  type   = stack[2];
        DWORD  result;

        TRACE("VirtualFree16(%lx, %lx, %lx)\n",
                   (DWORD)base, size, type);

        result = VirtualFree(base, size, type);

        if (result)
            context->Edx = TRUE,
            context->Eax = STATUS_SUCCESS;
        else
            context->Edx = FALSE,
            context->Eax = STATUS_NO_MEMORY;  /* FIXME */
    }
    break;


    case 0x001F: /* FWorkingSetSize */
        /*
         * Input:   EDX: 0 if Get, 1 if Set
         *
         *          ECX: Get: Buffer to receive Working Set Size
         *               Set: Buffer containing Working Set Size
         *
         * Output:  NtStatus
         */
    {
        DWORD *ptr = (DWORD *)W32S_APP2WINE(context->Ecx);
        BOOL set = context->Edx;

        TRACE("FWorkingSetSize(%lx, %lx)\n", (DWORD)ptr, (DWORD)set);

        if (set)
            /* We do it differently ... */;
        else
            *ptr = 0x100;

        context->Eax = STATUS_SUCCESS;
    }
    break;


    default:
	VXD_BARF( context, "W32S" );
    }
/**
 * Read header and get resource directory offset in a Windows library
 * (AKA module).
 */
bool Win32ResExtractor::read_library(WinLibrary *fi) {
	/* check for DOS header signature `MZ' */
	RETURN_IF_BAD_POINTER(false, MZ_HEADER(fi->memory)->magic);
	if (FROM_LE_16(MZ_HEADER(fi->memory)->magic) == IMAGE_DOS_SIGNATURE) {
		DOSImageHeader *mz_header = MZ_HEADER(fi->memory);

		RETURN_IF_BAD_POINTER(false, mz_header->lfanew);

		// Apply endian fix (currently only lfanew is used from the DOSImageHeader,
		// so we don't bother to 'fix' the rest).
		LE32(mz_header->lfanew);

		if (mz_header->lfanew < sizeof(DOSImageHeader)) {
			error("%s: not a Windows library", _fileName.c_str());
			return false;
		}
	}

	/* check for NT header signature `PE' */
	RETURN_IF_BAD_POINTER(false, PE_HEADER(fi->memory)->signature);
	if (FROM_LE_32(PE_HEADER(fi->memory)->signature) == IMAGE_NT_SIGNATURE) {
		Win32ImageNTHeaders *pe_header;
		int d;

		// Fix image header endianess
		fix_win32_image_header_endian(PE_HEADER(fi->memory));

		/* allocate new memory */
		fi->total_size = calc_vma_size(fi);
		if (fi->total_size == 0) {
			/* calc_vma_size has reported error */
			return false;
		}
		byte *ptr = (byte *)realloc(fi->memory, fi->total_size);
		assert(ptr);
		fi->memory = ptr;

		/* relocate memory, start from last section */
		pe_header = PE_HEADER(fi->memory);
		RETURN_IF_BAD_POINTER(false, pe_header->file_header.number_of_sections);

		/* we don't need to do OFFSET checking for the sections.
		 * calc_vma_size has already done that */
		for (d = pe_header->file_header.number_of_sections - 1; d >= 0 ; d--) {
			Win32ImageSectionHeader *pe_sec = PE_SECTIONS(fi->memory) + d;

			if (pe_sec->characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
				continue;

			//if (pe_sec->virtual_address + pe_sec->size_of_raw_data > fi->total_size)

			RETURN_IF_BAD_OFFSET(0, fi->memory + pe_sec->virtual_address, pe_sec->size_of_raw_data);
			RETURN_IF_BAD_OFFSET(0, fi->memory + pe_sec->pointer_to_raw_data, pe_sec->size_of_raw_data);
			if (FROM_LE_32(pe_sec->virtual_address) != pe_sec->pointer_to_raw_data) {
				memmove(fi->memory + pe_sec->virtual_address,
						fi->memory + pe_sec->pointer_to_raw_data,
						pe_sec->size_of_raw_data);
			}
		}

		/* find resource directory */
		RETURN_IF_BAD_POINTER(false, pe_header->optional_header.data_directory[IMAGE_DIRECTORY_ENTRY_RESOURCE]);
		Win32ImageDataDirectory *dir = pe_header->optional_header.data_directory + IMAGE_DIRECTORY_ENTRY_RESOURCE;
		if (dir->size == 0) {
			error("%s: file contains no resources", _fileName.c_str());
			return false;
		}

		fix_win32_image_data_directory(dir);

		fi->first_resource = fi->memory + dir->virtual_address;
		return true;
	}

	/* other (unknown) header signature was found */
	error("%s: not a Windows library", _fileName.c_str());
	return false;
}