此时ARM端显示Remote debugging from host 188.188.187.38，Debug便建立连接了，可以调试了，具体的调试命令参考下面连接，这是GDB的命令，可能其中会有些不同：
9. GDB远程调试错误解决
使用GDB 7.2版本进行远程调试时出现：Remote ‘g’ packet reply is too long错误，需要修改gdb代码解决，办法是：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;
}
}
以上方法是通过网络仿真的，也可以通过串口也，具体可以看gdb-7.9/gdb/gdbserver下的README，以下截取部分：
Usage (server (target) side):
For example, using a serial port, you might say:
target> gdbserver /dev/com1 emacs foo.txt
To use a TCP connection, you could say:
target> gdbserver host:2345 emacs foo.txt
Usage (host side):
For example, using a serial port, you might say:
(gdb) target remote /dev/ttyb
communicates with the server via serial line /dev/ttyb, and:
(gdb) target remote the-target:2345