HalSetRealTimeClock

INT8 __fastcall HalSetRealTimeClock(INT16 *a1){
  __int64 v2; 
  unsigned int v3; 
  _EX_TIMEZONE_STATE *ExTimeZoneState; 
  signed __int64 v5; 
  INT64 v6; 
  __int64 QuadPart; 
  unsigned int v9; 
  int v10; 
  NTSTATUS v11; 
  INT8 v12; 
  char v13; 
  int v14[8]; 
  _LARGE_INTEGER UtcTime; 
  __int64 v16; 
  _ACPI_REAL_TIME AcpiRealTime; 

  UtcTime.QuadPart = 0i64;
  v16 = 0i64;
  v2 = *(&ExBootDevicesRemovedEvent + 103);
  AcpiRealTime = 0i64;
  if( *(&ExBootDevicesRemovedEvent + 103) && **(&ExBootDevicesRemovedEvent + 103) )
  {
    v3 = *(_DWORD *)(*(&ExBootDevicesRemovedEvent + 103) + 4i64);
    _InterlockedOr(v14, 0);
    if( !RtlpTimeFieldsToTimeNoLeapSeconds(a1, &v16) )
      return 0;
    v6 = 0i64;
    if( !v3 )
    {
      QuadPart = v16;
      goto LABEL_18;
    }
    ExTimeZoneState = (_EX_TIMEZONE_STATE *)(v2 + 8);
    QuadPart = v16;
    while( 1 )
    {
      v5 = *(_QWORD *)&ExTimeZoneState->TimeZoneInformation.tzi.Bias;
      if( *(__int64 *)&ExTimeZoneState->TimeZoneInformation.tzi.Bias < 0 )
      {
        v5 &= ~0x8000000000000000ui64;
        if( QuadPart < v5 + 10000000 )
        {
          if( QuadPart < v5 )
          {
LABEL_18:
            UtcTime.QuadPart = QuadPart;
            goto LABEL_22;
          }
          return 0;
        }
        QuadPart -= 10000000i64;
      }
      else if( QuadPart < v5 + 10000000 )
      {
        if( QuadPart < v5 )
          goto LABEL_18;
        QuadPart = 2 * QuadPart - v5;
      }
      else
      {
        QuadPart += 10000000i64;
      }
      v6 = (unsigned int)(v6 + 1);
      ExTimeZoneState = (_EX_TIMEZONE_STATE *)((char *)ExTimeZoneState + 8);
      if( (unsigned int)v6 >= v3 )
        goto LABEL_18;
    }
  }
  if( !RtlpTimeFieldsToTimeNoLeapSeconds(a1, &UtcTime) )
    return 0;
  QuadPart = UtcTime.QuadPart;
LABEL_22:
  if( !*(&stru_140CF2E80 + 1829) )
  {
    ExTimeZoneState = PsGetCurrentServerSiloGlobals((_KSPIN_LOCK *)v5)->ExTimeZoneState;
    UtcTime.QuadPart = ExTimeZoneState->TimeZoneBias.QuadPart + QuadPart;
  }
  v9 = ((unsigned int)HalpPlatformFlags >> 2) & 1;
  if( v9 )
    HalpWriteCmosTime((UINT8 *)a1, (INT64)ExTimeZoneState, v6);
  v10 = dword_140C49D0C;
  v11 = -1073741823;
  if( KeGetCurrentIrql() >= 2u
    || dword_140C49D0C
    || (v11 = HalpUtcTimeToAcpiRealTime(&UtcTime, &AcpiRealTime), v11 < 0)
    || (v11 = HalpSetAcpiRealTimeClock(&AcpiRealTime), v11 < 0) )
  {
    if( (_BYTE)v9 != 1 && byte_140C49D08 && v10 && (HalpPlatformFlags & 8) == 0 )
      v11 = HalEfiSetTime(&UtcTime);
  }
  if( v11 >= 0 )
    LOBYTE(v9) = 1;
  HalpSetVirtualRtc(&UtcTime);
  v12 = v9;
  if( v13 )
    return 1;
  return v12;
}

Referenced by: