Alexandre Julliard : ntdll: Add a helper function to set a syscall table.
Alexandre Julliard
julliard at winehq.org
Mon Aug 30 15:53:52 CDT 2021
Module: wine
Branch: master
Commit: d017c704f0131110f96b65e0edac0adf62be1d55
URL: https://source.winehq.org/git/wine.git/?a=commit;h=d017c704f0131110f96b65e0edac0adf62be1d55
Author: Alexandre Julliard <julliard at winehq.org>
Date: Mon Aug 30 12:20:03 2021 +0200
ntdll: Add a helper function to set a syscall table.
Signed-off-by: Alexandre Julliard <julliard at winehq.org>
---
dlls/ntdll/unix/loader.c | 32 +++++++++++++++++++++-----------
dlls/ntdll/unix/unix_private.h | 1 +
include/wine/unixlib.h | 3 +--
3 files changed, 23 insertions(+), 13 deletions(-)
diff --git a/dlls/ntdll/unix/loader.c b/dlls/ntdll/unix/loader.c
index bdd54314540..53df7c87878 100644
--- a/dlls/ntdll/unix/loader.c
+++ b/dlls/ntdll/unix/loader.c
@@ -114,6 +114,7 @@ void (WINAPI *p__wine_ctrl_routine)(void*);
SYSTEM_DLL_INIT_BLOCK *pLdrSystemDllInitBlock = NULL;
static NTSTATUS (CDECL *p__wine_set_unix_funcs)( int version, const struct unix_funcs *funcs );
+static void *p__wine_syscall_dispatcher;
extern SYSTEM_SERVICE_TABLE __wine_syscall_table DECLSPEC_HIDDEN;
@@ -825,8 +826,6 @@ static NTSTATUS fixup_ntdll_imports( const char *name, HMODULE module )
static void load_ntdll_functions( HMODULE module )
{
- void **ptr;
-
ntdll_exports = get_module_data_dir( module, IMAGE_FILE_EXPORT_DIRECTORY, NULL );
assert( ntdll_exports );
@@ -844,16 +843,15 @@ static void load_ntdll_functions( HMODULE module )
GET_FUNC( RtlUserThreadStart );
GET_FUNC( __wine_ctrl_routine );
GET_FUNC( __wine_set_unix_funcs );
-#undef GET_FUNC
-#define SET_PTR(name,val) \
- if ((ptr = (void *)find_named_export( module, ntdll_exports, #name ))) *ptr = val; \
- else ERR( "%s not found\n", #name )
-
- SET_PTR( __wine_syscall_dispatcher, __wine_syscall_dispatcher );
+ GET_FUNC( __wine_syscall_dispatcher );
#ifdef __i386__
- SET_PTR( __wine_ldt_copy, &__wine_ldt_copy );
+ {
+ void **p__wine_ldt_copy;
+ GET_FUNC( __wine_ldt_copy );
+ *p__wine_ldt_copy = &__wine_ldt_copy;
+ }
#endif
-#undef SET_PTR
+#undef GET_FUNC
}
static void load_ntdll_wow64_functions( HMODULE module )
@@ -1145,6 +1143,18 @@ static NTSTATUS CDECL init_unix_lib( void *module, DWORD reason, const void *ptr
}
+/***********************************************************************
+ * ntdll_init_syscalls
+ */
+NTSTATUS ntdll_init_syscalls( ULONG id, SYSTEM_SERVICE_TABLE *table, void **dispatcher )
+{
+ if (id > 3) return STATUS_INVALID_PARAMETER;
+ *dispatcher = __wine_syscall_dispatcher;
+ KeServiceDescriptorTable[id] = *table;
+ return STATUS_SUCCESS;
+}
+
+
/***********************************************************************
* __wine_unix_call
*/
@@ -1944,7 +1954,7 @@ static void start_main_thread(void)
NtCreateKeyedEvent( &keyed_event, GENERIC_READ | GENERIC_WRITE, NULL, 0 );
load_ntdll();
if (main_image_info.Machine != current_machine) load_wow64_ntdll( main_image_info.Machine );
- KeServiceDescriptorTable[0] = __wine_syscall_table;
+ ntdll_init_syscalls( 0, &__wine_syscall_table, p__wine_syscall_dispatcher );
status = p__wine_set_unix_funcs( NTDLL_UNIXLIB_VERSION, &unix_funcs );
if (status == STATUS_REVISION_MISMATCH)
{
diff --git a/dlls/ntdll/unix/unix_private.h b/dlls/ntdll/unix/unix_private.h
index 731b12d332c..b2bcd423d4b 100644
--- a/dlls/ntdll/unix/unix_private.h
+++ b/dlls/ntdll/unix/unix_private.h
@@ -250,6 +250,7 @@ extern void signal_init_process(void) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN signal_start_thread( PRTL_THREAD_START_ROUTINE entry, void *arg,
BOOL suspend, TEB *teb ) DECLSPEC_HIDDEN;
extern void DECLSPEC_NORETURN signal_exit_thread( int status, void (*func)(int), TEB *teb ) DECLSPEC_HIDDEN;
+extern SYSTEM_SERVICE_TABLE KeServiceDescriptorTable[4] DECLSPEC_HIDDEN;
extern void __wine_syscall_dispatcher(void) DECLSPEC_HIDDEN;
extern void WINAPI DECLSPEC_NORETURN __wine_syscall_dispatcher_return( void *frame, ULONG_PTR retval ) DECLSPEC_HIDDEN;
extern NTSTATUS signal_set_full_context( CONTEXT *context ) DECLSPEC_HIDDEN;
diff --git a/include/wine/unixlib.h b/include/wine/unixlib.h
index 1f5308cb434..072401a0714 100644
--- a/include/wine/unixlib.h
+++ b/include/wine/unixlib.h
@@ -26,10 +26,9 @@ typedef UINT64 unixlib_handle_t;
extern NTSTATUS WINAPI __wine_unix_call( unixlib_handle_t handle, unsigned int code, void *args );
-extern SYSTEM_SERVICE_TABLE KeServiceDescriptorTable[4];
-
/* some useful helpers from ntdll */
extern DWORD ntdll_umbstowcs( const char *src, DWORD srclen, WCHAR *dst, DWORD dstlen );
extern int ntdll_wcstoumbs( const WCHAR *src, DWORD srclen, char *dst, DWORD dstlen, BOOL strict );
+extern NTSTATUS ntdll_init_syscalls( ULONG id, SYSTEM_SERVICE_TABLE *table, void **dispatcher );
#endif /* __WINE_WINE_UNIXLIB_H */
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