PopFxBuildDirectedDripsCandidateDeviceList

void __fastcall PopFxBuildDirectedDripsCandidateDeviceList(_QWORD *a1){
  _ETHREAD *CurrentThread; 
  ULONG_PTR i; 
  _QWORD **v4; 
  _QWORD *v5; 
  _ETHREAD *v6; 
  unsigned int SessionId; 
  char v8; 
  int v9; 
  unsigned __int64 v10; 
  bool v11; 
  __int64 v12; 
  int v13; 
  unsigned int v14; 
  __int64 v15; 
  int v16; 
  a1[1] = a1;
  *a1 = a1;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --*((_WORD *)CurrentThread + 242);
  ExAcquirePushLockExclusiveEx((UINT64)&PopFxBlockingDeviceListLock, 0i64);
  ExAcquirePushLockExclusiveEx((UINT64)&PopFxDeviceListLock, 0i64);
  for( i = PopFxDeviceList; (ULONG_PTR *)i != &PopFxDeviceList; i = *(_QWORD *)i )
  {
    if( (_InterlockedCompareExchange((volatile signed __int32 *)(i + 824), 0, 0) & 0x40) != 0 )
    {
      PopFxAddRefDevice(i);
      v4 = (_QWORD **)a1[1];
      v5 = (_QWORD *)(i + 872);
      if( *v4 != a1 )
        __fastfail(3u);
      *v5 = a1;
      *(_QWORD *)(i + 880) = v4;
      *v4 = v5;
      a1[1] = v5;
    }
  }
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)&PopFxDeviceListLock, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((volatile INT64 *)&PopFxDeviceListLock);
  v6 = (_ETHREAD *)KeGetCurrentThread();
  v16 = 0;
  if( (unsigned int)MiGetSystemRegionType((UINT64)&PopFxDeviceListLock) == 1 )
    SessionId = MmGetSessionIdEx(*((_QWORD *)v6 + 23));
  else
    SessionId = -1;
  --*((_WORD *)v6 + 243);
  v8 = ++*((_BYTE *)v6 + 794);
  v9 = (*((char *)v6 + 792) | *((char *)v6 + 870)) ^ 0x3F;
  while( 1 )
  {
    v11 = !_BitScanReverse((unsigned int *)&v12, v9);
    if( v11 )
      goto LABEL_20;
    v10 = *((_QWORD *)v6 + 100) + 96 * v12;
    v9 &= ~(1 << v12);
    if( (*(_BYTE *)(v10 + 26) & 1) != 0
      && (*(_DWORD *)(v10 + 32) & 1) == 0
      && (*(_QWORD *)(v10 + 32) & 0x7FFFFFFFFFFFFFFCi64) == ((unsigned __int64)&PopFxDeviceListLock & 0x7FFFFFFFFFFFFFFCi64)
      && *(_DWORD *)(v10 + 40) == SessionId )
    {
      *(_BYTE *)(v10 + 26) &= ~1u;
      if( *(_QWORD *)(v10 + 32) )
        break;
    }
  }
  if( !v10 )
  {
LABEL_20:
    if( (*((_DWORD *)v6 + 30) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, (ULONG_PTR)v6, (ULONG_PTR)&PopFxDeviceListLock, SessionId, 0i64);
    goto LABEL_27;
  }
  *(_BYTE *)(v10 + 32) |= 2u;
  if( *(__int64 *)(v10 + 32) < 0 )
    KiAbEntryRemoveFromTree(v10);
  v13 = *(_DWORD *)(v10 + 88) & 0x1FFFF;
  v14 = *(_DWORD *)(v10 + 88) & 0xFFFE0000;
  *(_BYTE *)(v10 + 25) &= ~1u;
  v16 = v13;
  *(_DWORD *)(v10 + 88) = v14;
  *(_QWORD *)(v10 + 32) = 0i64;
  v15 = (__int64)(v10 - *((_QWORD *)v6 + 100)) / 96;
  if( v8 == 1 )
    *((_BYTE *)v6 + 792) |= 1 << v15;
  else
    _InterlockedOr8((volatile signed __int8 *)v6 + 870, 1 << v15);
LABEL_27:
  --*((_BYTE *)v6 + 794);
  KiAbThreadRemoveBoosts((ULONG_PTR)v6, (__int64)&PopFxDeviceListLock, (unsigned int *)&v16);
  v11 = (*((_WORD *)v6 + 243))++ == 0xFFFF;
  if( v11 && *((_ETHREAD **)v6 + 19) != (_ETHREAD *)((char *)v6 + 152) )
    KiCheckForKernelApcDelivery();
}

Referenced by: