最近做实验，需要使用gdb进行调试；以后搞系统相关的研究，多少都会涉及到gdb手动调试，所以今天在此处简要记录一下：
DEBUGGING WITH GDB: https://azeria-labs.com/debugging-with-gdb-introduction/
INTRODUCTION TO ARM ASSEMBLY BASICS: https://azeria-labs.com/writing-arm-assembly-part-1/ https://zhuanlan.zhihu.com/p/109544390
RASPBERRY PI ON QEMU: https://azeria-labs.com/emulate-raspberry-pi-with-qemu/ https://www.cnblogs.com/xuyaowen/p/qemu-arm.html
Arm Instruction Set Reference Guide: https://developer.arm.com/documentation/100076/0100
ARM Arch: https://en.wikipedia.org/wiki/ARM_architecture
https://www.gnu.org/software/gdb/
https://sourceware.org/gdb/current/onlinedocs/gdb/