ntoskrnl.exe: Add stub for ExRegisterCallback() function.

dlls/ntoskrnl.exe/ntoskrnl.c

@@ -2062,6 +2062,14 @@ NTSTATUS WINAPI ExCreateCallback(PCALLBACK_OBJECT *obj, POBJECT_ATTRIBUTES attr,
     return STATUS_SUCCESS;
 }
 
+void * WINAPI ExRegisterCallback(PCALLBACK_OBJECT callback_object,
+        PCALLBACK_FUNCTION callback_function, void *callback_context)
+{
+    FIXME("callback_object %p, callback_function %p, callback_context %p stub.\n",
+            callback_object, callback_function, callback_context);
+
+    return (void *)0xdeadbeef;
+}
 
 /***********************************************************************
  *           ExFreePool   (NTOSKRNL.EXE.@)
@@ -3046,6 +3054,7 @@ PVOID WINAPI MmGetSystemRoutineAddress(PUNICODE_STRING SystemRoutineName)
         if (!pFunc)
         {
            hMod = GetModuleHandleW( halW );
+
            if (hMod) pFunc = GetProcAddress( hMod, routineNameA.Buffer );
         }
         RtlFreeAnsiString( &routineNameA );

dlls/ntoskrnl.exe/ntoskrnl.exe.spec

@@ -183,7 +183,7 @@
 @ stub ExRaiseException
 @ stub ExRaiseHardError
 @ stub ExRaiseStatus
-@ stub ExRegisterCallback
+@ stdcall ExRegisterCallback(ptr ptr ptr)
 @ stub ExReinitializeResourceLite
 @ stdcall ExReleaseResourceForThreadLite(ptr long)
 @ extern ExSemaphoreObjectType

include/ddk/wdm.h

@@ -1356,6 +1356,7 @@ typedef void * (NTAPI *PALLOCATE_FUNCTION)(POOL_TYPE, SIZE_T, ULONG);
 typedef void * (NTAPI *PALLOCATE_FUNCTION_EX)(POOL_TYPE, SIZE_T, ULONG, PLOOKASIDE_LIST_EX);
 typedef void (NTAPI *PFREE_FUNCTION)(void *);
 typedef void (NTAPI *PFREE_FUNCTION_EX)(void *, PLOOKASIDE_LIST_EX);
+typedef void (NTAPI *PCALLBACK_FUNCTION)(void *, void *, void *);
 
 #ifdef _WIN64
 #define LOOKASIDE_ALIGN DECLSPEC_CACHEALIGN
@@ -1627,6 +1628,7 @@ PSLIST_ENTRY WINAPI ExInterlockedPushEntrySList(PSLIST_HEADER,PSLIST_ENTRY,PKSPI
 LIST_ENTRY * WINAPI ExInterlockedRemoveHeadList(LIST_ENTRY*,KSPIN_LOCK*);
 BOOLEAN   WINAPI ExIsResourceAcquiredExclusiveLite(ERESOURCE*);
 ULONG     WINAPI ExIsResourceAcquiredSharedLite(ERESOURCE*);
+void *    WINAPI ExRegisterCallback(PCALLBACK_OBJECT,PCALLBACK_FUNCTION,void*);
 void    FASTCALL ExReleaseFastMutexUnsafe(PFAST_MUTEX);
 void      WINAPI ExReleaseResourceForThreadLite(ERESOURCE*,ERESOURCE_THREAD);
 ULONG     WINAPI ExSetTimerResolution(ULONG,BOOLEAN);