https://zhuanlan.zhihu.com/p/33074506 关于volatile的解释https://kakaroto.homelinux.net/2017/11/introduction-to-reverse-engineering-and-assembly/introduction to reverse engineering and Assembly, by Youness Alaouihttps://www.cs.virginia.edu/~evans/cs216/guides/x86.html x86 Assembly Guide,