PspUnlockAffinityUpdateExclusive

VOID __stdcall PspUnlockAffinityUpdateExclusive(_ETHREAD *Thread){
  _ETHREAD *CurrentThread; 
  unsigned int SessionId; 
  unsigned __int8 v4; 
  int v5; 
  _KLOCK_ENTRY *v6; 
  bool v7; 
  __int64 v8; 
  int v9; 
  unsigned int v10; 
  __int64 v11; 
  UINT64 a3; 

  if( (_InterlockedExchangeAdd64(&PspAffinityUpdateLock._bf_0, 0xFFFFFFFFFFFFFFFFui64) & 6) == 2 )
    ExfTryToWakePushLock(&PspAffinityUpdateLock);
  LODWORD(a3) = 0;
  CurrentThread = (_ETHREAD *)KeGetCurrentThread();
  if( MiGetSystemRegionType((UINT64)&PspAffinityUpdateLock) == 1 )
    SessionId = MmGetSessionIdEx(CurrentThread->Tcb.ApcState.Process);
  else
    SessionId = -1;
  --CurrentThread->Tcb.SpecialApcDisable;
  v4 = ++CurrentThread->Tcb.AbAllocationRegionCount;
  v5 = ((char)CurrentThread->Tcb.AbEntrySummary | (char)CurrentThread->Tcb.AbOrphanedEntrySummary) ^ 0x3F;
  while( 1 )
  {
    v7 = !_BitScanReverse((unsigned int *)&v8, v5);
    if( v7 )
      goto LABEL_13;
    v6 = &CurrentThread->Tcb.LockEntries[v8];
    v5 &= ~(1 << v8);
    if( (v6->AcquiredByte & 1) != 0
      && (v6->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 1) == 0
      && (v6->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 & 0x7FFFFFFFFFFFFFFCi64) == ((unsigned __int64)&PspAffinityUpdateLock & 0x7FFFFFFFFFFFFFFCi64)
      && v6->LockState.SessionId == SessionId )
    {
      v6->AcquiredByte &= ~1u;
      if( v6->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 )
        break;
    }
  }
  if( !v6 )
  {
LABEL_13:
    if( (*(&CurrentThread->Tcb.MiscFlags + 1) & 0x10000) == 0 )
      KeBugCheckEx(0x162u, CurrentThread, &PspAffinityUpdateLock, (PVOID)SessionId, 0i64);
    goto LABEL_20;
  }
  v6->CrossThreadReleasableAndBusyByte |= 2u;
  if( v6->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 < 0 )
    KiAbEntryRemoveFromTree(v6);
  v9 = v6->BoostBitmap.AllFields & 0x1FFFF;
  v10 = v6->BoostBitmap.AllFields & 0xFFFE0000;
  v6->ThreadLocalFlags &= ~1u;
  LODWORD(a3) = v9;
  v6->BoostBitmap.AllFields = v10;
  v6->LockState.$E8276A2CF8B819ED32D1B6FEB35D730A::_bf_0 = 0i64;
  v11 = v6 - CurrentThread->Tcb.LockEntries;
  if( v4 == 1 )
    CurrentThread->Tcb.AbEntrySummary |= 1 << v11;
  else
    _InterlockedOr8((volatile signed __int8 *)&CurrentThread->Tcb.AbOrphanedEntrySummary, 1 << v11);
LABEL_20:
  --CurrentThread->Tcb.AbAllocationRegionCount;
  KiAbThreadRemoveBoosts(&CurrentThread->Tcb, &PspAffinityUpdateLock, &a3);
  v7 = CurrentThread->Tcb.SpecialApcDisable++ == -1;
  if( v7
    && ($F25F8C4BA33AF922A5F1AF68CD89DDDF *)CurrentThread->Tcb.ApcState.ApcListHead[0].Flink != &CurrentThread->Tcb.152 )
  {
    KiCheckForKernelApcDelivery();
  }
  KeLeaveCriticalRegionThread(&Thread->Tcb);
}

Referenced by: