CfgAddressToBitState

NTSTATUS __stdcall CfgAddressToBitState(UINT64 a1, const INT64 *a2){
  return _bittest64(a2, 2 * (a1 >> 4)) | (2 * _bittest64(a2, 2 * (a1 >> 4) + 1));
}

Referenced by:

MiCfgMarkValidEntries
MiValidateUserCallTarget