RtlpHpSegMgrVaCtxInsert

NTSTATUS __stdcall RtlpHpSegMgrVaCtxInsert(INT64 a1, INT64 a2){
  __int128 v2; 
  __int16 *v4; 
  UINT64 v5; 
  unsigned __int64 v6; 
  UINT8 v7; 
  unsigned __int64 v8; 
  NTSTATUS result; 
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  unsigned __int8 v12; 
  int v13; 
  bool v14; 
  __int64 v15; 
  _KLOCK_ENTRY *v16; 
  __int64 v17; 
  __int128 v18; 
  UINT64 a3; 
  __int16 *v20; 

  v2 = *(_OWORD *)(a1 + 40);
  v20 = 0i64;
  v18 = v2;
  RtlpHpQueryVA(a2, &v18, &v20, 0i64);
  v4 = v20;
  if( *v20 < 0 )
  {
    *v20 ^= (*v20 ^ (*v20 + 1)) & 0x7FF;
    _InterlockedExchangeAdd64((volatile signed __int64 *)(*(__int16 *)(a1 + 20) + a1), 1ui64);
    v4 = v20;
  }
  v5 = a1 + 112;
  v6 = (unsigned __int64)(unsigned __int16)*v4 >> 15;
  v7 = RtlpHpAcquireLockExclusive((_EX_PUSH_LOCK *)(a1 + 112), *(_DWORD *)(a1 + 40) & 1);
  *((_QWORD *)v4 + 1) = *(_QWORD *)(a1 + 8 * v6 + 120);
  *(_QWORD *)(a1 + 8 * v6 + 120) = v4 + 4;
  v8 = v7;
  if( (*(_DWORD *)(a1 + 40) & 1) != 0 )
  {
    ExReleaseSpinLockExclusiveFromDpcLevel((INT64 *)(a1 + 112));
    result = KiIrqlFlags;
    __writecr8(v8);
  }
  else
  {
    if( (_InterlockedExchangeAdd64((volatile signed __int64 *)v5, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
      ExfTryToWakePushLock((_EX_PUSH_LOCK *)v5);
    LODWORD(a3) = 0;
    CurrentThread = (_ETHREAD *)KeGetCurrentThread();
    if( MiGetSystemRegionType(v5) == 1 )
      SessionId = MmGetSessionIdEx(CurrentThread->Tcb.ApcState.Process);
    else
      SessionId = -1;
    --CurrentThread->Tcb.SpecialApcDisable;
    v12 = ++CurrentThread->Tcb.AbAllocationRegionCount;
    v13 = ((char)CurrentThread->Tcb.AbEntrySummary | (char)CurrentThread->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
    while( 1 )
    {
      v14 = !_BitScanReverse((unsigned int *)&v15, v13);
      if( v14 )
        goto LABEL_12;
      v16 = &CurrentThread->Tcb.LockEntries[v15];
      v13 &= ~(1 << v15);
      if( (v16->AcquiredByte & 1) != 0
        && (v16->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
        && (v16->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == (v5 & 0x7FFFFFFFFFFFFFFCi64)
        && v16->LockState.SessionId == SessionId )
      {
        v16->AcquiredByte &= ~1u;
        if( v16->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
          break;
      }
    }
    if( !v16 )
    {
LABEL_12:
      if( (*(&CurrentThread->Tcb.MiscFlags + 1) & 0x10000) == 0 )
        KeBugCheckEx(0x162u, CurrentThread, (PVOID)v5, (PVOID)SessionId, 0i64);
      goto LABEL_24;
    }
    v16->CrossThreadReleasableAndBusyByte |= 2u;
    if( v16->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
      KiAbEntryRemoveFromTree(v16);
    LODWORD(a3) = v16->BoostBitmap.AllFields & 0x1FFFF;
    v16->BoostBitmap.AllFields &= 0xFFFE0000;
    v16->ThreadLocalFlags &= ~1u;
    v16->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
    v17 = v16 - CurrentThread->Tcb.LockEntries;
    if( v12 == 1 )
      CurrentThread->Tcb.AbEntrySummary |= 1 << v17;
    else
      _InterlockedOr8((volatile signed __int8 *)&CurrentThread->Tcb.AbOrphanedEntrySummary, 1 << v17);
LABEL_24:
    --CurrentThread->Tcb.AbAllocationRegionCount;
    KiAbThreadRemoveBoosts(&CurrentThread->Tcb, (VOID *)v5, &a3);
    v14 = CurrentThread->Tcb.SpecialApcDisable++ == -1;
    if( v14
      && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)CurrentThread->Tcb.ApcState.ApcListHead[0].Flink != &CurrentThread->Tcb.152 )
    {
      KiCheckForKernelApcDelivery();
    }
    KiLeaveGuardedRegionUnsafe((__int64)KeGetCurrentThread());
  }
  return result;
}

Referenced by: