https://blog.wongcw.com/2021/05/20/arm%e5%b0%87%e8%88%89%e8%be%a6%e6%96%b0%e5%93%81%e7%99%bc%e5%b8%83%e6%9c%83%ef%bc%9acortex-x2-a79%e5%a4%a7%e6%a0%b8%e6%9c%89%e6%9c%9b%e7%99%bb%e5%a0%b4/