PopFxPrepareDevicesForShutdown

VOID __stdcall PopFxPrepareDevicesForShutdown(){
  _ETHREAD *CurrentThread; 
  _ETHREAD *v1; 
  unsigned int SessionId; 
  char v3; 
  int v4; 
  unsigned __int64 v5; 
  bool v6; 
  __int64 v7; 
  int v8; 
  unsigned int v9; 
  __int64 v10; 
  int v11; 
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --*((_WORD *)CurrentThread + 242);
  ExAcquirePushLockExclusiveEx((UINT64)&PopFxDeviceListLock, 0i64);
  PopFxEnableShutdownActiveBias = 1;
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)&PopFxDeviceListLock, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((volatile INT64 *)&PopFxDeviceListLock);
  v11 = 0;
  v1 = (_ETHREAD *)KeGetCurrentThread();
  if( (unsigned int)MiGetSystemRegionType((UINT64)&PopFxDeviceListLock) == 1 )
    SessionId = MmGetSessionIdEx(*((_QWORD *)v1 + 23));
  else
    SessionId = -1;
  --*((_WORD *)v1 + 243);
  v3 = ++*((_BYTE *)v1 + 794);
  v4 = (*((char *)v1 + 792) | *((char *)v1 + 870)) ^ 0x3F;
  while( 1 )
  {
    v6 = !_BitScanReverse((unsigned int *)&v7, v4);
    if( v6 )
      goto LABEL_13;
    v5 = *((_QWORD *)v1 + 100) + 96 * v7;
    v4 &= ~(1 << v7);
    if( (*(_BYTE *)(v5 + 26) & 1) != 0
      && (*(_DWORD *)(v5 + 32) & 1) == 0
      && (*(_QWORD *)(v5 + 32) & 0x7FFFFFFFFFFFFFFCi64) == ((unsigned __int64)&PopFxDeviceListLock & 0x7FFFFFFFFFFFFFFCi64)
      && *(_DWORD *)(v5 + 40) == SessionId )
    {
      *(_BYTE *)(v5 + 26) &= ~1u;
      if( *(_QWORD *)(v5 + 32) )
        break;
    }
  }
  if( !v5 )
  {
LABEL_13:
    if( (*((_DWORD *)v1 + 30) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, (ULONG_PTR)v1, (ULONG_PTR)&PopFxDeviceListLock, SessionId, 0i64);
    goto LABEL_20;
  }
  *(_BYTE *)(v5 + 32) |= 2u;
  if( *(__int64 *)(v5 + 32) < 0 )
    KiAbEntryRemoveFromTree(v5);
  v8 = *(_DWORD *)(v5 + 88) & 0x1FFFF;
  v9 = *(_DWORD *)(v5 + 88) & 0xFFFE0000;
  *(_BYTE *)(v5 + 25) &= ~1u;
  v11 = v8;
  *(_DWORD *)(v5 + 88) = v9;
  *(_QWORD *)(v5 + 32) = 0i64;
  v10 = (__int64)(v5 - *((_QWORD *)v1 + 100)) / 96;
  if( v3 == 1 )
    *((_BYTE *)v1 + 792) |= 1 << v10;
  else
    _InterlockedOr8((volatile signed __int8 *)v1 + 870, 1 << v10);
LABEL_20:
  --*((_BYTE *)v1 + 794);
  KiAbThreadRemoveBoosts((ULONG_PTR)v1, (__int64)&PopFxDeviceListLock, (unsigned int *)&v11);
  v6 = (*((_WORD *)v1 + 243))++ == 0xFFFF;
  if( v6 && *((_ETHREAD **)v1 + 19) != (_ETHREAD *)((char *)v1 + 152) )
    KiCheckForKernelApcDelivery();
  KeLeaveCriticalRegionThread((__int64)KeGetCurrentThread());
  PopFxActivateDevicesForSx(4ui64);
}

Referenced by: