HalGetMessageRoutingInfo

__int64 __fastcall HalGetMessageRoutingInfo(int *a1, _DWORD *a2){
  unsigned __int16 *v4; 
  char v5; 
  __int16 v6; 
  char v7; 
  unsigned __int64 v8; 
  int v9; 
  int v10; 
  UINT64 v11; 
  int v12; 
  int v14; 
  char v15; 
  int v16; 
  int v17; 
  unsigned __int16 *v18[2]; 
  __int16 v19; 
  int v20; 
  __int16 v21; 
  __int128 v22; 
  UINT64 Id; 
  v20 = 0;
  v21 = 0;
  LODWORD(Id) = 0;
  v22 = 0i64;
  if( (unsigned int)*a1 > 1 )
    goto LABEL_53;
  v4 = (unsigned __int16 *)*((_QWORD *)a1 + 2);
  if( !v4
    || (v5 = 1, (unsigned __int16 *)((unsigned __int64)v4 & ((unsigned __int64)v4 ^ ((unsigned __int64)v4 - 1))) != v4) )
  {
    v5 = 0;
  }
  v6 = *((_WORD *)a1 + 12);
  v7 = 0;
  if( !v6 )
  {
    v8 = 0i64;
    if( KeActiveProcessors.Count )
      v8 = KeActiveProcessors.Bitmap[0];
    if( v4 == (unsigned __int16 *)v8 )
      v7 = 1;
  }
  v9 = a1[8];
  v19 = v6;
  v18[1] = v4;
  v18[0] = 0i64;
  if( v9 == 1 )
  {
    if( v5 || v7 )
    {
      v10 = KeEnumerateNextProcessor(&Id, v18);
      if( v10 >= 0 )
      {
        if( v7 )
        {
          while( 1 )
          {
            v11 = (unsigned int)Id;
            if( (unsigned int)Id >= (unsigned int)HalpInterruptProcessorCount )
              break;
            v10 = KeEnumerateNextProcessor(&Id, v18);
            if( v10 < 0 )
            {
              v11 = (unsigned int)Id;
              goto LABEL_49;
            }
          }
          v10 = -1073741811;
LABEL_49:
          if( (unsigned int)v11 < (unsigned int)HalpInterruptProcessorCount )
            v10 = 0;
        }
        else
        {
          v11 = (unsigned int)Id;
        }
        if( v10 >= 0 && (int)HalGetProcessorIdByNtNumber(v11, &Id) >= 0 )
          goto LABEL_16;
      }
    }
    goto LABEL_44;
  }
  if( v9 == 2 )
  {
    if( !HalpInterruptClusterModeEnabled )
    {
      if( (int)KeEnumerateNextProcessor(&Id, v18) < 0 )
        return 3221225485i64;
      v14 = DWORD2(v22);
      while( (unsigned int)Id < (unsigned int)HalpInterruptProcessorCount )
      {
        if( *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id) != 5 )
          goto LABEL_53;
        v14 |= *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id + 8);
        if( (int)KeEnumerateNextProcessor(&Id, v18) < 0 )
        {
          if( v14 )
            goto LABEL_16;
          return 3221225485i64;
        }
      }
LABEL_44:
      HalpInterruptLastProblem = 21;
      return 3221225485i64;
    }
LABEL_53:
    HalpInterruptLastProblem = 20;
    return 3221225485i64;
  }
  if( v9 != 3 || !HalpInterruptClusterModeEnabled )
    goto LABEL_53;
  v15 = 0;
  if( (int)KeEnumerateNextProcessor(&Id, v18) >= 0 )
  {
    v16 = HIDWORD(v22);
    v17 = DWORD2(v22);
    while( (unsigned int)Id < (unsigned int)HalpInterruptProcessorCount )
    {
      if( *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id) != 6 )
        goto LABEL_53;
      if( v15 )
      {
        if( v17 != *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id + 8) )
        {
          if( !v7 )
            goto LABEL_53;
          v16 = *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id + 12);
          v17 = *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id + 8);
        }
        v16 |= *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id + 12);
      }
      else
      {
        v16 = *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id + 12);
        v17 = *(_DWORD *)(HalpInterruptTargets + 24i64 * (unsigned int)Id + 8);
        v15 = 1;
      }
      if( (int)KeEnumerateNextProcessor(&Id, v18) < 0 )
        goto LABEL_16;
    }
    goto LABEL_44;
  }
LABEL_16:
  v12 = *a1;
  *a2 = 1;
  if( v12 )
  {
    a2[2] = 3;
    a2[20] = v9;
  }
  else
  {
    a2[2] = 1;
    a2[21] = a1[10];
    a2[20] = a1[11];
    a2[22] = *((unsigned __int16 *)a1 + 24);
  }
  return 0i64;
}

Referenced by: