IoConnectInterruptEx

NTSTATUS __stdcall IoConnectInterruptEx(PIO_CONNECT_INTERRUPT_PARAMETERS Parameters){
  ULONG Version; 
  NTSTATUS v3; 
  KIRQL v4; 
  KIRQL Irql; 
  char v6; 
  USHORT Group; 
  int v8; 
  PVOID v9; 
  unsigned int v10; 
  __int64 v11; 
  KIRQL v12; 
  __int128 v13; 
  __m128i v14; 
  __int128 v15; 
  __int128 v16; 
  NTSTATUS v17; 
  KAFFINITY ProcessorEnableMask; 
  KSPIN_LOCK *v20; 
  PKSERVICE_ROUTINE ServiceRoutine; 
  KSERVICE_ROUTINE *PhysicalDeviceObject; 
  PKINTERRUPT *InterruptObject; 
  PKSPIN_LOCK ServiceContext; 
  ULONG SpinLock; 
  KIRQL SynchronizeIrql; 
  KINTERRUPT_MODE InterruptMode; 
  KINTERRUPT_MODE ShareVector; 
  struct _GROUP_AFFINITY *TargetProcessors; 
  BOOL v30[4]; 
  int v31; 
  _BYTE result[20]; 
  __int128 v33; 
  __int128 v34; 
  __int128 v35; 
  __int128 v36; 
  __int64 v37; 
  PVOID P; 
  __int64 v39; 
  P = 0i64;
  v39 = 0i64;
  if( KeGetCurrentIrql() )
    KeBugCheckEx(0x121u, 1ui64, KeGetCurrentIrql(), 0i64, 0i64);
  Version = Parameters->Version;
  switch( Version )
  {
    case 1u:
      goto LABEL_49;
    case 2u:
      return IopConnectLineBasedInterrupt();
    case 3u:
      goto LABEL_5;
    case 4u:
LABEL_49:
      if( !Parameters->FullySpecified.PhysicalDeviceObject )
        return -1073741811;
      if( !Parameters->FullySpecified.ServiceRoutine )
        return -1073741811;
      v4 = Parameters->FullySpecified.SynchronizeIrql;
      Irql = Parameters->FullySpecified.Irql;
      if( v4 < Irql )
        return -1073741811;
      if( v4 || Irql )
      {
        v6 = 0;
      }
      else
      {
        v6 = 1;
        if( Parameters->FullySpecified.SpinLock )
          return -1073741811;
      }
      if( Version == 4 )
        Group = Parameters->FullySpecified.Group;
      else
        Group = 0;
      IopGetInterruptConnectionData(Parameters->FullySpecified.PhysicalDeviceObject, &P);
      if( v8 >= 0 )
      {
        memset((INT64)result, 0i64);
        v9 = P;
        v10 = 0;
        v31 = 0;
        if( *(_DWORD *)P )
        {
          while( 1 )
          {
            v11 = 88i64 * v10;
            if( *(_DWORD *)((char *)P + v11 + 12) == Parameters->FullySpecified.Vector )
            {
              v12 = Parameters->FullySpecified.Irql;
              if( (*((_BYTE *)P + v11 + 16) == v12 || !v12)
                && *(_DWORD *)((char *)P + v11 + 24) == Parameters->FullySpecified.InterruptMode
                && *(_WORD *)((char *)P + v11 + 40) == Group
                && *(_QWORD *)((char *)P + v11 + 32) == Parameters->FullySpecified.ProcessorEnableMask )
              {
                break;
              }
            }
            if( ++v10 >= *(_DWORD *)P )
              goto LABEL_42;
          }
          v31 = 1;
          v13 = *(_OWORD *)((char *)P + 88 * v10 + 40);
          v14 = *(__m128i *)((char *)P + 88 * v10 + 8);
          v33 = *(_OWORD *)((char *)P + 88 * v10 + 24);
          v15 = *(_OWORD *)((char *)P + 88 * v10 + 56);
          v34 = v13;
          v16 = *(_OWORD *)((char *)P + 88 * v10 + 72);
          v35 = v15;
          *(_QWORD *)&v15 = *((_QWORD *)P + 11 * v10 + 11);
          *(__m128i *)&result[4] = v14;
          v37 = v15;
          v36 = v16;
          if( !_mm_cvtsi128_si32(v14) && (BYTE12(v35) & 1) != 0 )
            Parameters->FullySpecified.ShareVector = 1;
          v17 = IopConnectInterrupt(
                  &v39,
                  (ULONG_PTR)Parameters->FullySpecified.PhysicalDeviceObject,
                  (__int64(__fastcall *)(__int64, __int64))Parameters->FullySpecified.ServiceRoutine,
                  0i64,
                  (__int64)Parameters->FullySpecified.ServiceContext,
                  0,
                  (__int64)Parameters->FullySpecified.SpinLock,
                  Parameters->FullySpecified.SynchronizeIrql,
                  Parameters->FullySpecified.ShareVector,
                  (__int64)TargetProcessors,
                  (__int64)&v31);
          if( v17 >= 0 )
            *Parameters->FullySpecified.InterruptObject = (PKINTERRUPT)(v39 + 112);
          ExFreePoolWithTag(v9, 0);
          return v17;
        }
LABEL_42:
        ExFreePoolWithTag(P, 0);
        return -1073741637;
      }
      if( v6 )
        return -1073741637;
      ProcessorEnableMask = Parameters->FullySpecified.ProcessorEnableMask;
      v20 = (KSPIN_LOCK *)Parameters->FullySpecified.ServiceContext;
      ServiceRoutine = Parameters->FullySpecified.ServiceRoutine;
      PhysicalDeviceObject = (KSERVICE_ROUTINE *)Parameters->FullySpecified.PhysicalDeviceObject;
      InterruptObject = Parameters->FullySpecified.InterruptObject;
      *(_QWORD *)&v30[2] = 0i64;
      *(_QWORD *)v30 = ProcessorEnableMask;
      LOBYTE(TargetProcessors) = Parameters->FullySpecified.ShareVector;
      ShareVector = Parameters->FullySpecified.InterruptMode;
      LOBYTE(InterruptMode) = Parameters->FullySpecified.SynchronizeIrql;
      SynchronizeIrql = Parameters->FullySpecified.Irql;
      SpinLock = Parameters->FullySpecified.Vector;
      ServiceContext = Parameters->FullySpecified.SpinLock;
      LOWORD(v30[2]) = Group;
      return IopConnectInterruptFullySpecified(
               InterruptObject,
               PhysicalDeviceObject,
               ServiceRoutine,
               v20,
               (UINT32)ServiceContext,
               SpinLock,
               SynchronizeIrql,
               InterruptMode,
               ShareVector,
               TargetProcessors,
               (BOOL)v30);
  }
  if( Version != 5 )
  {
    Parameters->Version = 3;
    return -1073741637;
  }
LABEL_5:
  v3 = IopConnectMessageBasedInterrupt(
         Version,
         Parameters->FullySpecified.PhysicalDeviceObject,
         Parameters->MessageBased.ConnectionContext.InterruptMessageTable,
         Parameters->MessageBased.MessageServiceRoutine,
         Parameters->FullySpecified.ServiceContext,
         Parameters->FullySpecified.SpinLock,
         Parameters->FullySpecified.SynchronizeIrql,
         InterruptMode);
  if( v3 < 0 )
  {
    if( Parameters->MessageBased.FallBackServiceRoutine )
    {
      v17 = IopConnectLineBasedInterrupt();
      Parameters->Version = 2;
      return v17;
    }
    return -1073741637;
  }
  return v3;
}

Referenced by: