MiInitializeWalkBounds

__int64 __fastcall MiInitializeWalkBounds(__int64 a1, _LIST_ENTRY **a2){
  __int64 v2; 
  unsigned int v3; 
  __int64 v4; 
  __int64 result; 

  if( (*(_WORD *)a1 & 0x800) != 0 )
  {
    *a2 = 0i64;
    a2[1] = (_LIST_ENTRY *)((char *)&MmGetPteBase()[-1].u.Trans._bf_0 + 7);
    a2[2] = (_LIST_ENTRY *)0xFFFFF70000000000i64;
    result = 2i64;
    a2[3] = (_LIST_ENTRY *)-1i64;
  }
  else
  {
    v2 = *(_QWORD *)(a1 + 24);
    v3 = 1;
    switch( *(_BYTE *)(v2 + 184) & 7 )
    {
      case 0:
        *a2 = 0i64;
        a2[1] = (_LIST_ENTRY *)0x7FFFFFFFFFFFi64;
        a2[2] = (_LIST_ENTRY *)*(&stru_140C4DB30 + 174);
        v4 = *(&stru_140C4DB30 + 176);
        if( !*(&stru_140C4DB30 + 176) )
        {
          v4 = 276840448i64;
          *(&stru_140C4DB30 + 178) = 0x10000000i64;
          *(&stru_140C4DB30 + 176) = 276840448i64;
          *(&stru_140C4DB30 + 177) = 276824064i64;
        }
        v3 = 2;
        a2[3] = (_LIST_ENTRY *)(*(&stru_140C4DB30 + 174) - 1i64 + v4);
        return v3;
      case 1:
        *a2 = (_LIST_ENTRY *)qword_140C4DB18;
        a2[1] = (_LIST_ENTRY *)(qword_140C4DB18 + 0x7FFFFFFFFFi64);
        return 1i64;
      case 2:
        *a2 = (_LIST_ENTRY *)*(&stru_140C4DB30 + 125);
        result = 1i64;
        a2[1] = (_LIST_ENTRY *)(*(&stru_140C4DB30 + 125) - 1i64 + (*(&stru_140C4DB30 + 121) << 21));
        break;
      case 3:
        *a2 = (_LIST_ENTRY *)*(&stru_140C4DB30 + 116);
        result = 1i64;
        a2[1] = (_LIST_ENTRY *)(*(&stru_140C4DB30 + 116) - 1i64 + (*(&stru_140C4DB30 + 112) << 21));
        break;
      case 4:
        *a2 = (_LIST_ENTRY *)*(&stru_140C4DB30 + 98);
        result = 1i64;
        a2[1] = (_LIST_ENTRY *)(*(&stru_140C4DB30 + 98) - 1i64 + (*(&stru_140C4DB30 + 94) << 21));
        break;
      case 6:
        *a2 = (_LIST_ENTRY *)*(&stru_140C4DB30 + 80);
        result = 1i64;
        a2[1] = (_LIST_ENTRY *)(*(&stru_140C4DB30 + 80) - 1i64 + (*(&stru_140C4DB30 + 76) << 21));
        break;
      default:
        return v3;
    }
  }
  return result;
}

Referenced by: