elf@ubuntu:~/work/EDU/sdk/ELF2-linux-source$ ./build.sh buildroot

elf@ubuntu:~/work$ vi gdbdemo.c

#include int main() {    int a = 10;    int b = 20;    int sum = a + b;    printf("a = %d, b = %d\n", a, b);    printf("sum = %d\n", sum);    for (int i = 0; i < 5; i++) {        printf("Loop i = %d\n", i);    }    return 0;}

elf@ubuntu:~/work$ export PATH=/home/elf/aarch64-buildroot-linux-gnu_sdk-buildroot/bin/:$PATHelf@ubuntu:~/work$ aarch64-linux-gcc -g gdbdemo.c -o gdbdemo

root@elf2-buildroot:~# cp /mnt/udisk/gdbdemo /home/elf

root@elf2-buildroot:~# gdbserver 172.20.8.7:2345 /home/elf/gdbdemo Process /home/elf/gdbdemo created; pid = 1314Listening on port 2345

elf@ubuntu:~/work$ ./EDU/sdk/ELF2-linux-source/buildroot/output/elf2_fs/host/bin/aarch64-linux-gdb gdbdemoGNU gdb (GDB) 12.1Copyright (C) 2022 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>This is free software: you are free to change and redistribute it.There is NO WARRANTY, to the extent permitted by law.Type "show copying" and "show warranty" for details.This GDB was configured as "--host=x86_64-pc-linux-gnu --target=aarch64-buildroot-linux-gnu".Type "show configuration" for configuration details.For bug reporting instructions, please see:<https://www.gnu.org/software/gdb/bugs/>.Find the GDB manual and other documentation resources online at:    <http://www.gnu.org/software/gdb/documentation/>.For help, type "help".Type "apropos word" to search for commands related to "word"...Reading symbols from gdbdemo...(gdb) target remote 172.20.8.7:2345   //连接开发板Remote debugging using 172.20.8.7:2345Reading /lib/ld-linux-aarch64.so.1 from remote target...warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.Reading /lib/ld-linux-aarch64.so.1 from remote target...Reading symbols from target:/lib/ld-linux-aarch64.so.1...(No debugging symbols found in target:/lib/ld-linux-aarch64.so.1)Reading /home/elf/work/EDU/sdk/ELF2-linux-source/buildroot/output/elf2_fs/host/lib/debug/.build-id/01/bd8db25550e790a84285a6377baa031748d93c.debug from remote target...0x0000007ff7ff1900 in _start () from target:/lib/ld-linux-aarch64.so.1(gdb) 

(gdb) l   //列出源代码1#include 23int main() {4    int a = 10;5    int b = 20;6    int sum = a + b;7    8    printf("a = %d, b = %d\n", a, b);9    printf("sum = %d\n", sum);10    (gdb) b 9  //在第9行设置断点Breakpoint 1 at 0x55555557d0: file gdbdemo.c, line 9.(gdb) c  // 继续执行程序，直到遇到断点，此时终端打印a = 10, b = 20Continuing.Reading /lib/libc.so.6 from remote target...Breakpoint 1, main () at gdbdemo.c:99    printf("sum = %d\n", sum);(gdb) c  //从当前断点继续执行到程序结束。Continuing.[Inferior 1 (process 1367) exited normally](gdb)