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标题: gdb+gdbserver调试 [打印本页]

作者: itlanger 时间: 2008-06-01 15:24
标题: gdb+gdbserver调试

gdb+gdbserver 是调试目标板的常用方法.
看了网上的一些资料，加上我自己的一些体会，写个完整的记录吧：
我的环境如下：HOST 192.168.0.33 Target: 192.168.0.34
NFS共享目录: mount -t nfs -o nolock /home/itlanger/work /mnt

编译arm-gdb:

下载gdb源代码:
- $ cd downloads
- $ wget -t 0 -w 30 -c http://ftp.gnu.org/gnu/gdb/gdb-6.6.tar.gz
tar zxvf gdb-6.6.tar.gz
cd gdb-6.6
./configure --target=arm-linux --prefix=/usr/local/arm-gdb -v
make
sudo make install
export PATH=$PATH:/usr/local/arm-gdb

编译arm-gdb-server

cd ~/downloads/gdb-6.6/gdb/gdbserver
./configure --target=arm-linux --host=arm-linux
make CC=/usr/local/arm/3.4.1/bin/arm-linux-gcc ##这里是交叉编译器的路径
cp gdbserver ~/work ##gdbserver是编译生成的
export PATH=$PATH:/usr/local/arm-gdb/bin (最好加到.bashrc中)

拷贝libthread库(这一步不做的话，运行gdbserver会出错!)

$ cd  /usr/local/arm/3.4.1/arm-linux/lib
$ ls -l libthread_db*
  -rwxr-xr-x 1 2619 man 29151 2004-07-28 23:08 libthread_db-1.0.so
  lrwxrwxrwx 1 2619 man 17 2008-05-25 12:00 libthread_db.so -> libthread_db.so.1
  lrwxrwxrwx 1 2619 man 19 2008-05-25 12:00 libthread_db.so.1 -> libthread_db-1.0.so
$ cp libthread_db-1.0.so ~/work
minicom下:
# cd /lib/
# cp /mnt/libthread_db-1.0.so /lib/
# ln -s libthread_db-1.0.so libthread_db.so.1
# ln -s libthread_db-1.0.so libthread_db.so

测试

写一个程序，用arm-linux-gcc -g 编译，放到work目录下, (我的为third)
minicom下:
- cd /mnt
- ./gdbserver 192.168.0.33:6666 third
  Process third created; pid = 356
  Listening on port 6666
终端下:
- export PATH=$PATH:/usr/local/arm-gdb/bin
- cd ~/work
- arm-linux-gdb third
  GNU gdb 6.6
  Copyright (C) 2006 Free Software Foundation, Inc.
  GDB is free software, covered by the GNU General Public License, and you are
  welcome to change it and/or distribute copies of it under certain conditions.
  Type "show copying" to see the conditions.
  There is absolutely no warranty for GDB. Type "show warranty" for details.
  This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-linux"...
  (gdb)
- (gdb) target remote 192.168.0.34:2345 ##(连接目标)
  Remote debugging using 192.168.0.34:2345
  0x40000dd0 in ?? () from /lib/ld-linux.so.2
- 现在可以通过l, b 设置断点了
- 运行: 用命令c ##记住这里不是用run, 因为程序已在Target Board上面由gdbserver启动了。结果输出是在Target Board端

这样就可以用emacs方便地远程调试了。

M-x gdba ##(我已经绑定到F10了)
Run gdba (like this): arm-linux-gdb -annotate=3 third
效果如下图:

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