如何在具有GDB GUI前端的PC上为ARM gdbserver执行PC上的远程gdb会话? [英] How do I perform a remote gdb session on a PC for ARM gdbserver WITH GDB GUI frontend?
问题描述
我在x86_64工作站上使用Ubuntu 16.04，并且正在用C ++交叉编译一个小型演示程序，并将其部署到运行ARM体系结构的嵌入式linux目标( environment-setup-cortexa9hf-neon-poky-linux-gnueabi ， arm-poky-linux-gnueabi-g ++ ).
I am using Ubuntu 16.04 on x86_64 workstation, and I'm cross-compiling a small demo program in C++, and deploying it to an embedded linux target running ARM architecture (environment-setup-cortexa9hf-neon-poky-linux-gnueabi, arm-poky-linux-gnueabi-g++).
我能够成功做到这一点，这使我可以在命令行上进行调试会话:
I am able to successfully do this which gives me a debug session on commandline:
目标:
rpm -ivh gdbserver-7.10.1-r0.cortexa9hf_neon.rpm
gdbserver :9091 ${APPNAME}
主机:
sudo apt-get install gdb-multiarch
gdb-multiarch $APPNAME
target remote 192.168.0.212:9091
...我现在可以在命令行上使用gdb-multiarch了！
... I can now use gdb-multiarch on commandline!
但是从这里开始...我真的很想能够使用许多 gdb 前端工具之一来提供GUI来设置断点并逐步执行代码(类似于 gdbgui，或使用 vscode 并配置调试器).是否有任何专门支持 gdb-multiarch 的 gdb 前端工具?
However from here... I really want to be able to use one of the many gdb frontend tools to provide a GUI to set breakpoints and step through the code (akin to gdbgui, or using vscode and configuring for a debugger). Are there any gdb frontend tools that specifically support gdb-multiarch?
我尝试使用的任何工具，我相信无论它使用什么基础gdb可执行文件，都会由于体系结构不匹配而出现此错误:
Any tool I try, I believe no matter what it uses base gdb executable and gives this error because of mismatched architecture:
target remote 192.168.0.212:9091
Remote debugging using 192.168.0.212:9091
warning: Architecture rejected target-supplied description
Remote 'g' packet reply is too long: 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000070fdff7e00000000c0fafc76100000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
更新1-
我可以使用 ddd 工具使它正常工作:
I can kinda sorta get this to work using ddd tool:
ddd --eval-command ="target remote $ MY_TARGET_IP:9091" --debugger gdb-multiarch
但是！这是古老的越野车，我现在无法在已加载的.so中设置断点.
However! This is ancient and buggy, and I can't set breakpoints in loaded .so's right now with this.
我尝试了 gdbgui 及其选项来指定调试器，但目前也无法正常工作.我在此处提交了功能请求报告:
I tried gdbgui with its options to specify debugger, but that's not currently working either. I filed a feature request report here:
https://github.com/cs01/gdbgui/issues/237
推荐答案
我找到了使用 gdbgui 的方法，但是这需要我根据我的特定远程目标体系结构从源代码重建gdb.我如何使其工作的详细信息在这里:
I found a way using gdbgui, but it required me to rebuild gdb from source code against my specific remote target architecture. Details of how I got it to work are here:
https://github.com/cs01/gdbgui/issues/237
以上链接断开时的重要位:TLDR解决方案:
Important bits in case the above link breaks: TLDR Solution:
我试图从ubuntu apt repos依赖于预构建gdb-multiarch，但没有用.当我决定下载gdb并在配置arm-linux-gnuabi目标架构时从源代码重建时.
I was trying to rely on a prebuild gdb-multiarch from ubuntu apt repos, which didn't work. When I decided to download gdb and rebuild from source while configuring for arm-linux-gnuabi target arch.
构建方法:
下载了最新的gdb源代码
downloaded latest gdb source code
将其解压缩，进入文件夹，并按如下所示进行构建:
unzip it, go into folder, and build it like this:
./configure --host=x86_64-pc-linux-gnu --build=x86_64-pc-linux-gnu --target=arm-linux-gnuabi && make -j8 && sudo make install
重要的是要注意，对于我的特定远程gdb服务器，它在ARM上运行，因此我必须在configure中说 target = arm-linux-gnuabi .GDB正在为我的PC x86架构构建，但是它知道在调试时将目标识别为ARM！
Important to note that for my particular remote gdb server it's running on ARM so i had to say target=arm-linux-gnuabi in configure. GDB is building for my PC x86 arch, but it knows when debugging to recognize the target as ARM!
现在，默认情况下将 arm-linux-gnuabi-gdb 安装到/usr/local/bin ...，但是您可以提供 prefix =< path> 到您要在上面的 ./configure 脚本中安装的位置.
Now, arm-linux-gnuabi-gdb is installed by default to /usr/local/bin ... but you can instead provide prefix=<path> to where you want it to install in ./configure script above.
使用此功能，我可以构建名为 arm-linux-gnuabi-gdb 的gdb的辅助副本，可以像这样将其馈送到 gdbgui :
Using this, I was able to build a secondary copy of gdb called arm-linux-gnuabi-gdb which i could feed to gdbgui like this:
gdbgui -g arm-linux-gnuabi-gdb
从那里，我可以给gdb命令连接到我的远程gdbserver.我必须事先设置断点.我的 gdb 命令就像这样来设置一些断点:
From there, I can give gdb commands to connect to my remote gdbserver. I'm having to set breakpoints beforehand. My gdb commands are like this to set a few breakpoints:
set breakpoint pending on
break my_object.cpp:<line number for breakpoint>
b example_function_name
target remote <remote arm machine IP>:<gdbserver port>
c
效果很好！这比在远程目标上的命令行上运行gdb更好.
Works great! This is leaps and bounds better than running gdb on commandline on my remote target.
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