编译gdb/gdbserver

编译arm-linux-gdb

下载gdb-7.12，解压缩进入目录

./configure --target=arm-linux --program-prefix=arm-linux- --prefix=/opt/arm-linux-gdb/

 修改gdb/remote.c

 

//==================================

  如果gdb提示：GDB7.6 Remote 'g' packet reply is too long 

  修改gdb/remote.c文件，屏蔽process_g_packet函数中的下列两行：

  if (buf_len > 2 * rsa->sizeof_g_packet)

     error (_(“Remote ‘g’ packet reply is too long: %s”), rs->buf);

  在其后添加：

  if (buf_len > 2 * rsa->sizeof_g_packet) {

      rsa->sizeof_g_packet = buf_len ;

      for (i = 0; i < gdbarch_num_regs (gdbarch); i++)

      {

         if (rsa->regs[i].pnum == -1)

         continue;

         if (rsa->regs[i].offset >= rsa->sizeof_g_packet)

         rsa->regs[i].in_g_packet = 0;

         else

         rsa->regs[i].in_g_packet = 1;

      }

   }

 

make && make install

 

 

编译gdbserver

进入gdb/gdbserver目录

./configure --target=arm-linux --host=arm-linux

 修改生成的makefile，将CC AR GXX都修改为交叉编译工具链中的工具

make

 将生成的gdbserver移植到目标机即可

 

目标机：arm

　假设正在运行的程序名字为hello，其进程ID 为6622，目标机IP为192.168.0.11，那么在目标机端开启gdbserver的命令格式：

#命令格式gdbserver IP:PORT --attach PID

 具体到目标机开启的命令为：

[root@test ~]# gdbserver 192.168.0.11:8888  --attach 6622Attached; pid = 6622Listening on port 8888

 

调试机：PC

root@liangwode:# arm-linux-gdbGNU gdb (GDB) 7.12Copyright (C) 2016 Free Software Foundation, Inc.License GPLv3+: GNU GPL version 3 or later 
     
      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=arm-linux".Type "show configuration" for configuration details.For bug reporting instructions, please see:
      .Find the GDB manual and other documentation resources online at:
      .For help, type "help".Type "apropos word" to search for commands related to "word".(gdb) target remote 192.168.0.11:8888Remote debugging using 192.168.0.11:8888warning: Can not parse XML target description; XML support was disabled at compile timeReading /home/storm/ftp/hello from remote target...warning: File transfers from remote targets can be slow. Use "set sysroot" to access files locally instead.Reading /home/storm/ftp/hello from remote target...Reading symbols from target:/home/storm/ftp/hello...done.Reading /lib/libc.so.6 from remote target...Reading /lib/ld-linux-armhf.so.3 from remote target...Reading symbols from target:/lib/libc.so.6...done.Reading symbols from target:/lib/ld-linux-armhf.so.3...done.0x76f0a8d4 in nanosleep () at ../sysdeps/unix/syscall-template.S:8484	../sysdeps/unix/syscall-template.S: No such file or directory.