NtCreateTimer2

INT64 __fastcall NtCreateTimer2(
        VOID **TimerHandle,
        VOID *Reserved1,
        VOID *Reserved2,
        UINT64 Attributes,
        UINT64 DesiredAccess){
  unsigned int v5; 
  __int64 v7; 
  _DWORD *v8; 
  char v9; 
  __int64 v10; 
  __int64 v11; 
  int inserted; 
  PADAPTER_OBJECT v13; 
  INT64 result; 
  __int64 v15; 
  INT64 v16; 
  INT8 PreviousMode[4]; 
  PADAPTER_OBJECT DmaAdapter; 
  PVOID Handle; 
  v5 = Attributes;
  Handle = 0i64;
  DmaAdapter = 0i64;
  if( !ExpExTimerAttributesAreValid((unsigned int)Attributes) )
    return 3221225714i64;
  if( v7 )
    return 3221225713i64;
  if( v8 && (v5 & 2) == 0 )
    return 3221225712i64;
  *(_DWORD *)PreviousMode = 0;
  v9 = *((_BYTE *)KeGetCurrentThread() + 562);
  if( v9 )
  {
    v10 = 0x7FFFFFFF0000i64;
    v11 = 0x7FFFFFFF0000i64;
    if( (unsigned __int64)TimerHandle < 0x7FFFFFFF0000i64 )
      v11 = (__int64)TimerHandle;
    *(_QWORD *)v11 = *(_QWORD *)v11;
    if( v8 )
    {
      if( (unsigned __int64)v8 < 0x7FFFFFFF0000i64 )
        v10 = (__int64)v8;
      *(_DWORD *)PreviousMode = *(_DWORD *)v10;
    }
  }
  else if( v8 )
  {
    *(_DWORD *)PreviousMode = *v8;
  }
  if( (v5 & 2) == 0 || (LODWORD(result) = ExpCheckIRTimerAccess(PreviousMode[0]), (int)result >= 0) )
  {
    inserted = ObCreateObjectEx(v9, ExpIRTimerObjectType, 0i64, v9, v15, 168, 0, 0, &DmaAdapter, 0i64);
    if( inserted >= 0 )
    {
      v13 = DmaAdapter;
      if( (v5 & 2) != 0 )
      {
        LODWORD(v16) = v5;
        KeInitializeIRTimer((INT64)DmaAdapter, 0i64, 0i64, (UINT8 *)PreviousMode, v16);
      }
      else
      {
        KeInitializeTimer2((INT64)DmaAdapter, 0i64, 0i64, v5);
      }
      v13[8].DmaOperations = 0i64;
      *(_DWORD *)&v13[10].Version = v5;
      LODWORD(v16) = 0;
      inserted = ObInsertObjectEx(v13, 0i64, (unsigned int)DesiredAccess, 0i64, v16, 0i64, &Handle);
      *(_DWORD *)PreviousMode = inserted;
      if( inserted >= 0 )
        *TimerHandle = Handle;
    }
    return(unsigned int)inserted;
  }
  return result;
}

Referenced by: