gdbserver远程调试

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yum安装：

yum install gdb

yum install gdb-gdbserver

 

gdb 远程调试，可以让代码只在一台服务器上（宿主服务器), 然后把debug版本的程序放到目标机上进行远程调试，避免代码被复制出去。

gdb 远程调试，需要在远端目标服务器上部署 gdbserver 和要调试的程序，在宿主机上运行gdb。

默认 linux 没带 gdbserver，需要自己源码编译。

到 https://ftp.gnu.org/gnu/gdb/ 下载 gdb源码，redhat 6.x 系列都是 gdb-7.2a.tar.bz2

tar xfj gdb-7.2a.tar.bz2

cd gdb-7.2

cd gdb/gdbserver

./configure --prefix=$HOME/local/gdb

make

make install

只需要把 $HOME/local/gdb/bin/gdbserver 复制到目标服务器上即可。

查看帮助：

man -M ~/local/gdb/share/man gdbserver

目标机上运行：

$ ~/local/gdb/bin/gdbserver :9000 cyclone --slave --start

Process cyclone created; pid = 10020

Listening on port 9000

或者 gdbserver ip:port --attach pid

在宿主机上运行 gdb

$ gdb

(gdb) set debug remote 1

(gdb) set architecture i386:x86-64

(gdb) target remote 192.168.103.232:9000

Remote debugging using 192.168.103.232:9000

warning: Could not load vsyscall page because no executable was specified

try using the "file" command first.

0x0000003422800b00 in ?? ()

Created trace state variable $trace_timestamp for target's variable 1.

(gdb) symbol-file ~/work/dev/g8m/build/debug/Gliese/home/bin/cyclone

Reading symbols from /home/kongds/work/dev/g8m/build/debug/Gliese/home/bin/cyclone...done.

(gdb) b main

Breakpoint 1 at 0x4cf177: file /home/kongds/work/dev/g8m/src/trunk/product/layer/GlieseTool/cyclone/dev/src/ztcm/ztcmMain.c, line 102.

(gdb) continue

Continuing.

Breakpoint 1, main (aArgc=3, aArgv=0x7fffa4b1e048)

at /home/kongds/work/dev/g8m/src/trunk/product/layer/GlieseTool/cyclone/dev/src/ztcm/ztcmMain.c:102

102 stlInt32 sState = 0;

(gdb) next

注意：remote 模式下，不支持 start 命令。因此需要先下断点，然后执行 c命令. 接着就能一步一步debug 了。

 

 

///////////////////////////////////////////////////

set debug remote 1

set architecture i386:x86-64

target remote 192.168.103.232:9000

symbol-file /home/fq/gbase8m/gbase8m_debug/dest/Gliese/home/bin/cyclone

set follow-fork-mode child

catch exec