RtlpCSparseBitmapUnlock

INT64 __fastcall RtlpCSparseBitmapUnlock(INT64 *a1){
  INT64 v1; 
  int v2; 
  UINT64 v3; 
  unsigned __int64 v4; 
  INT64 *v5; 
  INT64 result; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  char v9; 
  int v10; 
  bool v11; 
  __int64 v12; 
  unsigned __int64 v13; 
  __int64 v14; 
  int v15; 
  v1 = a1[1];
  v2 = *(_DWORD *)a1;
  v3 = v1 + 24;
  if( *(_BYTE *)(v1 + 48) )
  {
    v4 = *((unsigned __int8 *)a1 + 4);
    v5 = (INT64 *)(v1 + 24);
    if( v2 == 1 )
      ExReleaseSpinLockExclusiveFromDpcLevel(v5);
    else
      ExReleaseSpinLockSharedFromDpcLevel((PEX_SPIN_LOCK)v5);
    result = (unsigned int)KiIrqlFlags;
    __writecr8(v4);
  }
  else
  {
    if( v2 == 1 )
    {
      if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v3, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
        ExfTryToWakePushLock((volatile INT64 *)v3);
      v15 = 0;
      CurrentThread = (_ETHREAD *)KeGetCurrentThread();
      if( (unsigned int)MiGetSystemRegionType(v3) == 1 )
        SessionId = MmGetSessionIdEx(*((_QWORD *)CurrentThread + 23));
      else
        SessionId = -1;
      --*((_WORD *)CurrentThread + 243);
      v9 = ++*((_BYTE *)CurrentThread + 794);
      v10 = (*((char *)CurrentThread + 792) | *((char *)CurrentThread + 870)) ^ 0x3F;
      while( 1 )
      {
        v11 = !_BitScanReverse((unsigned int *)&v12, v10);
        if( v11 )
          break;
        v13 = *((_QWORD *)CurrentThread + 100) + 96 * v12;
        v10 &= ~(1 << v12);
        if( (*(_BYTE *)(v13 + 26) & 1) != 0
          && (*(_DWORD *)(v13 + 32) & 1) == 0
          && (*(_QWORD *)(v13 + 32) & 0x7FFFFFFFFFFFFFFCi64) == (v3 & 0x7FFFFFFFFFFFFFFCi64)
          && *(_DWORD *)(v13 + 40) == SessionId )
        {
          *(_BYTE *)(v13 + 26) &= ~1u;
          if( *(_QWORD *)(v13 + 32) )
          {
            if( v13 )
            {
              *(_BYTE *)(v13 + 32) |= 2u;
              if( *(__int64 *)(v13 + 32) < 0 )
                KiAbEntryRemoveFromTree(v13);
              v15 = *(_DWORD *)(v13 + 88) & 0x1FFFF;
              *(_DWORD *)(v13 + 88) &= 0xFFFE0000;
              *(_BYTE *)(v13 + 25) &= ~1u;
              *(_QWORD *)(v13 + 32) = 0i64;
              v14 = (__int64)(v13 - *((_QWORD *)CurrentThread + 100)) / 96;
              if( v9 == 1 )
                *((_BYTE *)CurrentThread + 792) |= 1 << v14;
              else
                _InterlockedOr8((volatile signed __int8 *)CurrentThread + 870, 1 << v14);
              goto LABEL_27;
            }
            break;
          }
        }
      }
      if( (*((_DWORD *)CurrentThread + 30) & 0x10000) == 0 )
        KeBugCheckEx(0x162u, (ULONG_PTR)CurrentThread, v3, SessionId, 0i64);
LABEL_27:
      --*((_BYTE *)CurrentThread + 794);
      KiAbThreadRemoveBoosts((ULONG_PTR)CurrentThread, v3, (unsigned int *)&v15);
      v11 = (*((_WORD *)CurrentThread + 243))++ == 0xFFFF;
      if( v11 && *((_ETHREAD **)CurrentThread + 19) != (_ETHREAD *)((char *)CurrentThread + 152) )
        KiCheckForKernelApcDelivery();
    }
    else
    {
      if( _InterlockedCompareExchange64((volatile signed __int64 *)v3, 0i64, 17i64) != 17 )
        ExfReleasePushLockShared((INT64 *)v3);
      KeAbPostRelease((PVOID)v3);
    }
    return KiLeaveGuardedRegionUnsafe((__int64)KeGetCurrentThread());
  }
  return result;
}

Referenced by: