RtlpCSparseBitmapUnlock

NTSTATUS __stdcall RtlpCSparseBitmapUnlock(INT64 *a1){
  INT64 v1; 
  int v2; 
  UINT64 v3; 
  unsigned __int64 v4; 
  INT64 *v5; 
  NTSTATUS result; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  unsigned __int8 v9; 
  int v10; 
  bool v11; 
  __int64 v12; 
  _KLOCK_ENTRY *v13; 
  __int64 v14; 
  UINT64 a3; 

  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 = KiIrqlFlags;
    __writecr8(v4);
  }
  else
  {
    if( v2 == 1 )
    {
      if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v3, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
        ExfTryToWakePushLock((_EX_PUSH_LOCK *)v3);
      LODWORD(a3) = 0;
      CurrentThread = (_ETHREAD *)KeGetCurrentThread();
      if( MiGetSystemRegionType(v3) == 1 )
        SessionId = MmGetSessionIdEx(CurrentThread->Tcb.ApcState.Process);
      else
        SessionId = -1;
      --CurrentThread->Tcb.SpecialApcDisable;
      v9 = ++CurrentThread->Tcb.AbAllocationRegionCount;
      v10 = ((char)CurrentThread->Tcb.AbEntrySummary | (char)CurrentThread->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
      while( 1 )
      {
        v11 = !_BitScanReverse((unsigned int *)&v12, v10);
        if( v11 )
          break;
        v13 = &CurrentThread->Tcb.LockEntries[v12];
        v10 &= ~(1 << v12);
        if( (v13->AcquiredByte & 1) != 0
          && (v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
          && (v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (v3 & 0x7FFFFFFFFFFFFFFCi64)
          && v13->LockState.SessionId == SessionId )
        {
          v13->AcquiredByte &= ~1u;
          if( v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
          {
            if( v13 )
            {
              v13->CrossThreadReleasableAndBusyByte |= 2u;
              if( v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
                KiAbEntryRemoveFromTree(v13);
              LODWORD(a3) = v13->BoostBitmap.AllFields & 0x1FFFF;
              v13->BoostBitmap.AllFields &= 0xFFFE0000;
              v13->ThreadLocalFlags &= ~1u;
              v13->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
              v14 = v13 - CurrentThread->Tcb.LockEntries;
              if( v9 == 1 )
                CurrentThread->Tcb.AbEntrySummary |= 1 << v14;
              else
                _InterlockedOr8((volatile signed __int8 *)&CurrentThread->Tcb.AbOrphanedEntrySummary, 1 << v14);
              goto LABEL_27;
            }
            break;
          }
        }
      }
      if( (*(&CurrentThread->Tcb.MiscFlags + 1) & 0x10000) == 0 )
        KeBugCheckEx(0x162u, CurrentThread, (PVOID)v3, (PVOID)SessionId, 0i64);
LABEL_27:
      --CurrentThread->Tcb.AbAllocationRegionCount;
      KiAbThreadRemoveBoosts(&CurrentThread->Tcb, (VOID *)v3, &a3);
      v11 = CurrentThread->Tcb.SpecialApcDisable++ == -1;
      if( v11
        && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)CurrentThread->Tcb.ApcState.ApcListHead[0].Flink != &CurrentThread->Tcb.152 )
      {
        KiCheckForKernelApcDelivery();
      }
    }
    else
    {
      if( _InterlockedCompareExchange64((volatile signed __int64 *)v3, 0i64, 17i64) != 17 )
        ExfReleasePushLockShared((_EX_PUSH_LOCK *)v3);
      KeAbPostRelease((VOID *)v3);
    }
    KiLeaveGuardedRegionUnsafe((__int64)KeGetCurrentThread());
  }
  return result;
}

Referenced by: