. elf . map . list . Hex file

• After compiling the link, generate .elf file
  https://xinqiu.gitbooks.io/linux-inside-zh/content/Theory/linux-theory-2.html

• The linking process can choose to generate .map file
  https://mbb.eet-china.com/blog/425232-416875.html

• .elf Documents can be passed through objdump Birth process .list file
  Include elf In the document
  Section Information name VMA LMA len
  Addresses of variables and functions
  Assembly command corresponding to function
  String information

• .elf Documents can be passed through objcopy Birth process .hex file
  https://blog.csdn.net/xiaohu1996/article/details/84197086