RtlpFcWriteHighLowHigh

NTSTATUS __stdcall RtlpFcWriteHighLowHigh(INT64 a1, INT64 a2){
  NTSTATUS result; 
  unsigned int v3; 

  _disable();
  *(_DWORD *)(a1 + 8) = HIDWORD(a2);
  result = v3 >> 9;
  *(_QWORD *)a1 = a2;
  if( (v3 & 0x200) != 0 )
    _enable();
  return result;
}

Referenced by:

CmFcManagerStartBootPhase
CmFcManagerStartRuntimePhase
CmFcManagerUpdateFeatureConfigurations
CmFcManagerUpdateFeatureUsageSubscriptions