PopFxInsertAcpiDevice

_QWORD *__fastcall PopFxInsertAcpiDevice(__int64 a1, __int64 a2, __int64 a3){
  _ETHREAD *CurrentThread; 
  _QWORD *v5; 
  _QWORD *v6; 
  _ETHREAD *v7; 
  unsigned int SessionId; 
  char v9; 
  int v10; 
  unsigned __int64 v11; 
  bool v12; 
  __int64 v13; 
  int v14; 
  unsigned int v15; 
  __int64 v16; 
  __int64 v18; 
  __int64 v19; 
  v19 = a2;
  v18 = a1;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  --*((_WORD *)CurrentThread + 242);
  ExAcquirePushLockExclusiveEx((UINT64)&PopFxDeviceListLock, 0i64);
  v5 = (_QWORD *)qword_140C24588;
  v6 = (_QWORD *)(a3 + 200);
  if( *(__int64 **)qword_140C24588 != &PopFxAcpiDeviceList )
    __fastfail(3u);
  v6[1] = qword_140C24588;
  *v6 = &PopFxAcpiDeviceList;
  *v5 = v6;
  qword_140C24588 = (__int64)v6;
  if( (_InterlockedExchangeAdd64((volatile signed __int64 *)&PopFxDeviceListLock, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock((volatile INT64 *)&PopFxDeviceListLock);
  LODWORD(v18) = 0;
  v7 = (_ETHREAD *)KeGetCurrentThread();
  if( (unsigned int)MiGetSystemRegionType((UINT64)&PopFxDeviceListLock) == 1 )
    SessionId = MmGetSessionIdEx(*((_QWORD *)v7 + 23));
  else
    SessionId = -1;
  --*((_WORD *)v7 + 243);
  v9 = ++*((_BYTE *)v7 + 794);
  v10 = (*((char *)v7 + 792) | *((char *)v7 + 870)) ^ 0x3F;
  while( 1 )
  {
    v12 = !_BitScanReverse((unsigned int *)&v13, v10);
    LODWORD(v19) = v13;
    if( v12 )
      goto LABEL_15;
    v11 = *((_QWORD *)v7 + 100) + 96 * v13;
    v10 &= ~(1 << v13);
    if( (*(_BYTE *)(v11 + 26) & 1) != 0
      && (*(_DWORD *)(v11 + 32) & 1) == 0
      && (*(_QWORD *)(v11 + 32) & 0x7FFFFFFFFFFFFFFCi64) == ((unsigned __int64)&PopFxDeviceListLock & 0x7FFFFFFFFFFFFFFCi64)
      && *(_DWORD *)(v11 + 40) == SessionId )
    {
      *(_BYTE *)(v11 + 26) &= ~1u;
      if( *(_QWORD *)(v11 + 32) )
        break;
    }
  }
  if( !v11 )
  {
LABEL_15:
    if( (*((_DWORD *)v7 + 30) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, (ULONG_PTR)v7, (ULONG_PTR)&PopFxDeviceListLock, SessionId, 0i64);
    goto LABEL_22;
  }
  *(_BYTE *)(v11 + 32) |= 2u;
  if( *(__int64 *)(v11 + 32) < 0 )
    KiAbEntryRemoveFromTree(v11);
  v14 = *(_DWORD *)(v11 + 88) & 0x1FFFF;
  v15 = *(_DWORD *)(v11 + 88) & 0xFFFE0000;
  *(_BYTE *)(v11 + 25) &= ~1u;
  LODWORD(v18) = v14;
  *(_DWORD *)(v11 + 88) = v15;
  *(_QWORD *)(v11 + 32) = 0i64;
  v16 = (__int64)(v11 - *((_QWORD *)v7 + 100)) / 96;
  if( v9 == 1 )
    *((_BYTE *)v7 + 792) |= 1 << v16;
  else
    _InterlockedOr8((volatile signed __int8 *)v7 + 870, 1 << v16);
LABEL_22:
  --*((_BYTE *)v7 + 794);
  KiAbThreadRemoveBoosts((ULONG_PTR)v7, (__int64)&PopFxDeviceListLock, (unsigned int *)&v18);
  v12 = (*((_WORD *)v7 + 243))++ == 0xFFFF;
  if( v12 && *((_ETHREAD **)v7 + 19) != (_ETHREAD *)((char *)v7 + 152) )
    KiCheckForKernelApcDelivery();
  return KeLeaveCriticalRegionThread((__int64)KeGetCurrentThread());
}

Referenced by: