参考：

• yoyotansa
  https://blog.csdn.net/hy907539007/article/details/102524521
• xztelecomlcs
  https://blog.51cto.com/7090376/1264642
• 冬青
  https://blog.csdn.net/oDongQing/article/details/104157497
• The GNU Assembler
  https://www.eecs.umich.edu/courses/eecs373/readings/Assembler.pdf
• The GNU Linker
  https://www.eecs.umich.edu/courses/eecs373/readings/Linker.pdf