HalpInterruptRegisterLine

NTSTATUS __stdcall HalpInterruptRegisterLine(_INTERRUPT_LINE_DESCRIPTION *Lines){
  NTSTATUS v1; 
  int MinLine; 
  int MaxLine; 
  _INTERRUPT_LINE_TYPE Type; 
  unsigned int ControllerIdentifier; 
  _REGISTERED_INTERRUPT_CONTROLLER *v7; 
  _REGISTERED_INTERRUPT_CONTROLLER *v8; 
  int v9; 
  int v10; 
  unsigned int MsiAddress; 
  unsigned int v12; 
  unsigned int v13; 
  PSTR MemoryInternal; 
  PSTR v15; 
  int v16; 
  _INTERRUPT_LINE_TYPE v17; 
  int v18; 
  int v19; 
  char *v20; 
  int v21; 
  int v22; 
  _LIST_ENTRY *p_OutputLinesHead; 
  PSTR *Blink; 
  unsigned int v26; 
  _LIST_ENTRY *Flink; 
  _LIST_ENTRY *v28; 

  v1 = 0;
  if( !HalpInterruptRegistrationAllowed || KeGetPcr()->Prcb.Number )
    return -1073741431;
  MinLine = Lines->MinLine;
  MaxLine = Lines->MaxLine;
  if( MinLine >= MaxLine )
    return -1073741811;
  Type = Lines->Type;
  if( Type == InterruptLineInvalidType )
    return -1073741811;
  ControllerIdentifier = Lines->ControllerIdentifier;
  v7 = HalpInterruptLookupController(Lines->ControllerIdentifier);
  v8 = v7;
  if( !v7 )
    return -1073741275;
  if( Type != InterruptLineOutputPin )
  {
    v9 = v7->MinLine;
    v10 = v7->MaxLine;
    if( v9 != v10 && MaxLine > v9 && MinLine < v10 )
    {
      Flink = v8->LinesHead.Flink;
      while( Flink != &v8->LinesHead )
      {
        v28 = Flink;
        Flink = Flink->Flink;
        if( MinLine < SLODWORD(v28[1].Blink) && MaxLine > SHIDWORD(v28[1].Flink) )
          return -1073741182;
      }
    }
  }
  MsiAddress = Lines->MsiAddress;
  if( MsiAddress != -1 && HalpInterruptFindLinesForGsiRange(MsiAddress, MaxLine + MsiAddress - MinLine) )
    return -1073741182;
  v12 = MaxLine - MinLine;
  if( v8->KnownType == InterruptControllerApic && MsiAddress != -1 )
  {
    v26 = 0;
    if( *(&CmpDummyThreadEvent + 1771) )
    {
      while( *(_DWORD *)(*(&CmpDummyThreadEvent + 884) + 16i64 * v26) != ControllerIdentifier
           || v12 <= *(_DWORD *)(*(&CmpDummyThreadEvent + 884) + 16i64 * v26 + 12) )
      {
        if( ++v26 >= *(&CmpDummyThreadEvent + 1771) )
          goto LABEL_12;
      }
      v12 = *(_DWORD *)(*(&CmpDummyThreadEvent + 884) + 16i64 * v26 + 12);
    }
  }
LABEL_12:
  if( Type == InterruptLineMsi )
    v13 = (((v12 + 31) >> 3) + 7) & 0xFFFFFFF8;
  else
    v13 = 0;
  MemoryInternal = HalpMmAllocateMemoryInternal(v13 + 8 * (v12 + 8 * v12 + 11), MmCached);
  v15 = MemoryInternal;
  if( !MemoryInternal )
    return -1073741670;
  memset(MemoryInternal, 0i64, v13 + 8 * (v12 + 8 * v12 + 11));
  if( v13 )
  {
    *((_DWORD *)v15 + 18) = v12;
    *((_QWORD *)v15 + 10) = v15 + 88;
  }
  v16 = Lines->MinLine;
  v17 = Lines->Type;
  v18 = Lines->MsiAddress;
  *((_DWORD *)v15 + 5) = v16;
  *((_DWORD *)v15 + 7) = v18;
  v19 = v16 + v12;
  *((_DWORD *)v15 + 6) = v16 + v12;
  *((_DWORD *)v15 + 8) = v17;
  if( v17 == InterruptLineMsi )
  {
    *((_QWORD *)v15 + 7) = *(_QWORD *)&Lines->MsiData;
    *((_DWORD *)v15 + 16) = Lines[1].ControllerIdentifier;
    *((_DWORD *)v15 + 9) = Lines->OutputUnitId;
  }
  v20 = &v15[v13 + 88];
  *((_QWORD *)v15 + 5) = v20;
  *((_QWORD *)v15 + 6) = &v20[56 * v12];
  if( v17 == InterruptLineOutputPin )
  {
    p_OutputLinesHead = &v8->OutputLinesHead;
    *((_DWORD *)v15 + 4) = Lines->GsiBase;
  }
  else
  {
    *((_DWORD *)v15 + 4) = v8->UnitId;
    v21 = v8->MinLine;
    v22 = v8->MaxLine;
    if( v21 == v22 )
    {
      v8->MinLine = v16;
      v8->MaxLine = *((_DWORD *)v15 + 6);
    }
    else if( v16 >= v21 )
    {
      if( v19 > v22 )
        v8->MaxLine = v19;
    }
    else
    {
      v8->MinLine = v16;
    }
    p_OutputLinesHead = &v8->LinesHead;
  }
  Blink = (PSTR *)p_OutputLinesHead->Blink;
  if( *Blink != (PSTR)p_OutputLinesHead )
    __fastfail(3u);
  *(_QWORD *)v15 = p_OutputLinesHead;
  *((_QWORD *)v15 + 1) = Blink;
  *Blink = v15;
  p_OutputLinesHead->Blink = (_LIST_ENTRY *)v15;
  return v1;
}

Referenced by: