The purpose of this manual is to describe the ARM instruction set architecture, including its high code density Thumb subset, and three of its standard coprocessor extensions: • The standard System Control coprocessor (coprocessor 15), which is used
博客地址 : https://blog.csdn.net/shulianghan/article/details/80202711 ARM处理器工作模式设置 先关代码 文档资源 1. ARM 架构参考手册 : ARM Architecture Reference Manual.pdf 2. ARM 汇编手册 : arm汇编手册（中文版）.chm 代码相关 : ① 汇编代码 ② 链接器脚本 ③ Makefile 文件
