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Authors: Gavriel State <gavriels@corel.com>, Ulrich Czekalla <ulrichc@corel.com> 

Added support for memory mapping of 4k aligned PE binaries.  This can
speed up load times significantly for some applications.
This commit is contained in:
Alexandre Julliard 2000-04-28 20:26:35 +00:00
parent 51c74d82a9
commit f93eb3e319
4 changed files with 60 additions and 53 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
include/module.h
View File

@ -124,8 +124,7 @@ typedef struct
typedef enum {
MODULE32_PE = 1,
MODULE32_ELF,
MODULE32_ELFDLL,
MODULE32_BI
MODULE32_ELFDLL
} MODULE32_TYPE;
typedef struct _wine_modref

20
loader/module.c
View File

@ -109,8 +109,7 @@ static BOOL MODULE_InitDll( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
return TRUE;
TRACE("(%s,%s,%p) - CALL\n",
wm->modname, typeName[type], lpReserved );
TRACE("(%s,%s,%p) - CALL\n", wm->modname, typeName[type], lpReserved );
/* Call the initialization routine */
switch ( wm->type )
@ -129,8 +128,10 @@ static BOOL MODULE_InitDll( WINE_MODREF *wm, DWORD type, LPVOID lpReserved )
break;
}
TRACE("(%s,%s,%p) - RETURN %d\n",
wm->modname, typeName[type], lpReserved, retv );
/* The state of the module list may have changed due to the call
to PE_InitDLL. We cannot assume that this module has not been
deleted. */
TRACE("(%p,%s,%p) - RETURN %d\n", wm, typeName[type], lpReserved, retv );
return retv;
}
@ -1378,10 +1379,13 @@ static void MODULE_FlushModrefs(void)
*/
switch(wm->type)
{
case MODULE32_PE: PE_UnloadLibrary(wm); break;
case MODULE32_PE: if ( !(wm->flags & WINE_MODREF_INTERNAL) )
PE_UnloadLibrary(wm);
else
BUILTIN32_UnloadLibrary(wm);
break;
case MODULE32_ELF: ELF_UnloadLibrary(wm); break;
case MODULE32_ELFDLL: ELFDLL_UnloadLibrary(wm); break;
case MODULE32_BI: BUILTIN32_UnloadLibrary(wm); break;
default:
ERR("Invalid or unhandled MODREF type %d encountered (wm=%p)\n", wm->type, wm);
@ -1462,12 +1466,12 @@ BOOL MODULE_FreeLibrary( WINE_MODREF *wm )
MODULE_DllProcessDetach( FALSE, NULL );
req->base = (void *)wm->module;
server_call_noerr( REQ_UNLOAD_DLL );
MODULE_FlushModrefs();
}
TRACE("END\n");
MODULE_FlushModrefs();
return TRUE;
}

85
loader/pe_image.c
View File

@ -21,16 +21,17 @@
* 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.
* - Sometimes, we can't 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
* are not. Older x86 pe binaries 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).
* and other byte blocksizes, we can't always do this. We *can* do this for
* newer pe binaries produced by MSVC 5 and later, since they are also aligned
* to 4096 byte boundaries on disk.
*/
#include "config.h"
@ -476,8 +477,10 @@ HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, WORD *version )
IMAGE_SECTION_HEADER *pe_sec;
IMAGE_DATA_DIRECTORY *dir;
BY_HANDLE_FILE_INFORMATION bhfi;
int i, rawsize, lowest_va, lowest_fa, vma_size, file_size = 0;
DWORD load_addr, aoep, reloc = 0;
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 = -1;
/* Retrieve file size */
if ( GetFileInformationByHandle( hFile, &bhfi ) )
@ -534,15 +537,13 @@ HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, WORD *version )
/* Find out how large this executeable should be */
pe_sec = PE_SECTIONS( hModule );
rawsize = 0; lowest_va = 0x10000; lowest_fa = 0x10000;
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 < lowest_fa)
lowest_fa = pe_sec[i].PointerToRawData;
if (pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData > rawsize)
rawsize = pe_sec[i].PointerToRawData+pe_sec[i].SizeOfRawData;
}
@ -604,13 +605,13 @@ HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, WORD *version )
if (load_addr == 0)
{
/* We need to perform base relocations */
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",
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" );
@ -639,37 +640,47 @@ HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, WORD *version )
TRACE_(segment)("Loading %s at %lx, range %x\n",
filename, load_addr, vma_size );
#if 0
/* Store the NT header at the load addr */
*(PIMAGE_DOS_HEADER)load_addr = *(PIMAGE_DOS_HEADER)hModule;
*PE_HEADER( load_addr ) = *nt;
memcpy( PE_SECTIONS(load_addr), PE_SECTIONS(hModule),
sizeof(IMAGE_SECTION_HEADER) * nt->FileHeader.NumberOfSections );
#if 0
/* Copies all stuff up to the first section. Including win32 viruses. */
memcpy( load_addr, hModule, lowest_fa );
#endif
req->handle = hFile;
server_call_fd( REQ_GET_READ_FD, -1, &unix_handle );
if (unix_handle == -1) goto error;
/* Map the header */
if (FILE_dommap( unix_handle, (void *)load_addr, 0, nt->OptionalHeader.SizeOfHeaders,
0, 0, PROT_EXEC | PROT_WRITE | PROT_READ,
MAP_PRIVATE | MAP_FIXED ) != load_addr)
{
ERR_(win32)( "Critical Error: failed to map PE header to necessary address.\n");
goto error;
}
/* Copy sections into module image */
pe_sec = PE_SECTIONS( hModule );
for (i = 0; i < nt->FileHeader.NumberOfSections; i++, pe_sec++)
{
/* memcpy only non-BSS segments */
/* FIXME: this should be done by mmap(..MAP_PRIVATE|MAP_FIXED..)
* but it is not possible for (at least) Linux needs
* a page-aligned offset.
*/
if(!(pe_sec->Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA))
memcpy((char*)RVA(pe_sec->VirtualAddress),
(char*)(hModule + pe_sec->PointerToRawData),
pe_sec->SizeOfRawData);
#if 0
/* not needed, memory is zero */
if(strcmp(pe_sec->Name, ".bss") == 0)
memset((void *)RVA(pe_sec->VirtualAddress), 0,
pe_sec->Misc.VirtualSize ?
pe_sec->Misc.VirtualSize :
pe_sec->SizeOfRawData);
#endif
if (!pe_sec->SizeOfRawData) continue;
TRACE("%s: mmaping section %s at %p off %lx\n",
filename, pe_sec->Name, (void*)RVA(pe_sec->VirtualAddress),
pe_sec->PointerToRawData);
if (FILE_dommap( unix_handle, (void*)RVA(pe_sec->VirtualAddress),
0, min(pe_sec->Misc.VirtualSize, pe_sec->SizeOfRawData),
0, pe_sec->PointerToRawData, PROT_EXEC | PROT_WRITE | PROT_READ,
MAP_PRIVATE | MAP_FIXED ) != (void*)RVA(pe_sec->VirtualAddress))
{
/* We failed to map to the right place (huh?) */
ERR_(win32)( "Critical Error: failed to map PE section to necessary address.\n");
goto error;
}
}
/* Perform base relocation, if necessary */
@ -685,6 +696,8 @@ HMODULE PE_LoadImage( HANDLE hFile, LPCSTR filename, WORD *version )
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;
}
@ -951,9 +964,8 @@ WINE_MODREF *PE_LoadLibraryExA (LPCSTR name, DWORD flags)
*/
void PE_UnloadLibrary(WINE_MODREF *wm)
{
DWORD vma_size = calc_vma_size( wm->module );
VirtualFree( (LPVOID)wm->module, vma_size, MEM_RELEASE );
TRACE(" unloading %s\n", wm->filename);
VirtualFree( (LPVOID)wm->module, 0, MEM_RELEASE );
HeapFree( GetProcessHeap(), 0, wm->filename );
HeapFree( GetProcessHeap(), 0, wm->short_filename );
HeapFree( GetProcessHeap(), 0, wm );
@ -1007,15 +1019,6 @@ BOOL PE_CreateProcess( HANDLE hFile, LPCSTR filename, LPCSTR cmd_line, LPCSTR en
return TRUE;
}
/*********************************************************************
* PE_UnloadImage [internal]
*/
int PE_UnloadImage( HMODULE hModule )
{
FIXME("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

5
memory/virtual.c
View File

@ -277,6 +277,7 @@ static int VIRTUAL_GetUnixProt( BYTE vprot )
{
if (vprot & VPROT_READ) prot |= PROT_READ;
if (vprot & VPROT_WRITE) prot |= PROT_WRITE;
if (vprot & VPROT_WRITECOPY) prot |= PROT_WRITE;
if (vprot & VPROT_EXEC) prot |= PROT_EXEC;
}
return prot;
@ -339,10 +340,10 @@ static BYTE VIRTUAL_GetProt(
vprot = VPROT_EXEC | VPROT_READ;
break;
case PAGE_EXECUTE_READWRITE:
vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE | VPROT_WRITECOPY;
vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
break;
case PAGE_EXECUTE_WRITECOPY:
vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE;
vprot = VPROT_EXEC | VPROT_READ | VPROT_WRITE | VPROT_WRITECOPY;
break;
case PAGE_NOACCESS:
default: