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wow64: Patch the Wow64Transition pointer in all loaded modules. 

Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Alexandre Julliard 2021-08-31 11:31:41 +02:00
parent 0afbbabcd9
commit 40673153b4
3 changed files with 23 additions and 7 deletions
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23
dlls/wow64/syscall.c
View File

@ -334,6 +334,17 @@ static DWORD get_syscall_num( const BYTE *syscall )
}
/**********************************************************************
* init_image_mapping
*/
void init_image_mapping( HMODULE module )
{
void **ptr = RtlFindExportedRoutineByName( module, "Wow64Transition" );
if (ptr) *ptr = pBTCpuGetBopCode();
}
/**********************************************************************
* init_syscall_table
*/
@ -440,7 +451,6 @@ static HMODULE load_cpu_dll(void)
*/
static DWORD WINAPI process_init( RTL_RUN_ONCE *once, void *param, void **context )
{
void **pWow64Transition, **p__wine_syscall_dispatcher;
HMODULE module;
UNICODE_STRING str;
@ -454,18 +464,17 @@ static DWORD WINAPI process_init( RTL_RUN_ONCE *once, void *param, void **contex
LdrGetDllHandle( NULL, 0, &str, &module );
GET_PTR( LdrSystemDllInitBlock );
module = (HMODULE)(ULONG_PTR)pLdrSystemDllInitBlock->ntdll_handle;
GET_PTR( Wow64Transition );
GET_PTR( __wine_syscall_dispatcher );
init_syscall_table( module, 0, &ntdll_syscall_table );
module = load_cpu_dll();
GET_PTR( BTCpuGetBopCode );
GET_PTR( BTCpuProcessInit );
GET_PTR( BTCpuSimulate );
pBTCpuProcessInit();
*pWow64Transition = *p__wine_syscall_dispatcher = pBTCpuGetBopCode();
module = (HMODULE)(ULONG_PTR)pLdrSystemDllInitBlock->ntdll_handle;
init_image_mapping( module );
init_syscall_table( module, 0, &ntdll_syscall_table );
*(void **)RtlFindExportedRoutineByName( module, "__wine_syscall_dispatcher" ) = pBTCpuGetBopCode();
init_file_redirects();
return TRUE;

6
dlls/wow64/virtual.c
View File

@ -257,6 +257,12 @@ NTSTATUS WINAPI wow64_NtMapViewOfSection( UINT *args )
commit, offset, size_32to64( &size, size32 ), inherit, alloc, protect );
if (NT_SUCCESS(status))
{
SECTION_IMAGE_INFORMATION info;
if (!NtQuerySection( handle, SectionImageInformation, &info, sizeof(info), NULL ))
{
if (info.Machine == current_machine) init_image_mapping( addr );
}
put_addr( addr32, addr );
put_size( size32, size );
}

1
dlls/wow64/wow64_private.h
View File

@ -32,6 +32,7 @@ void * WINAPI Wow64AllocateTemp( SIZE_T size );
void WINAPI Wow64ApcRoutine( ULONG_PTR arg1, ULONG_PTR arg2, ULONG_PTR arg3, CONTEXT *context );
void WINAPI Wow64PassExceptionToGuest( EXCEPTION_POINTERS *ptrs );
extern void init_image_mapping( HMODULE module ) DECLSPEC_HIDDEN;
extern void init_file_redirects(void) DECLSPEC_HIDDEN;
extern BOOL get_file_redirect( OBJECT_ATTRIBUTES *attr ) DECLSPEC_HIDDEN;