板子：hi3556v200
交叉编译工具：arm-himix200-linux
主机：win10+虚拟机的ubuntu16.4
gdb:gdb-8.2.tar.gz
1.在ubuntu交叉编译gdb（Remote 'g' packet reply is too long解决）
建议修改gdb8.2/gdb目录下面的remote.c解决Remote 'g' packet reply is too long
修改：
/* Further sanity checks, with knowledge of the architecture. */
if (buf_len > 2 * rsa->sizeof_g_packet)
error (_("Remote 'g' packet reply is too long (expected %ld bytes, got %d "
"bytes): %s"), rsa->sizeof_g_packet, buf_len / 2, rs->buf);修改为：
/* Further sanity checks, with knowledge of the architecture. */
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;
}
}在gdb8.2的目录执行
./configure --target=arm-himix200-linux --prefix=$(pwd)/cbInstall
make
make install
将在当前目录的cbInstall生成gdb工具,这个工具是ubuntu运行的
2. 在ubuntu交叉编译gdbserver
在gdb8.2/gdb/gdbserver的目录执行
./configure --target=arm-himix200-linux --prefix=$(pwd)/cbInstall
make
make install
将在当前目录的cbInstall生成gdbserver工具，这个工具需要拷贝到3556v200开发板
3.使用步骤
例子程序testProgram编译的时候需要加入-g参数
在板子运行
./gdbserver port:1234 ./testProgram
在ubuntu运行
./arm-himix200-linux-gdb
然后输入
target remote 192.168.10.10:1234
contiune
结果：
4.vscode远程调试
4.1ubuntu装ssh服务器
sudo apt update
sudo apt upgrade
sudo apt install openssh-server
sudo sytemctl enable ssh
sudo sytemctl start ssh
sudo sytemctl status ssh
sudo ufw allow ssh
sudo ufw enable
sudo ufw status
4.2 vscode装好ssh插件并链接ubuntu
然后配置
输入ssh xxx(ubuntu名称)@xxxxxx(ip地址）
远程调试最主要是配置vscode调试json文件 launch.json
下面是详细配置
{// Use IntelliSense to learn about possible attributes.// Hover to view descriptions of existing attributes.// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387"version": "0.2.0","configurations": [{"type": "cppdbg", "request": "launch","name": "Debug for test", "skipFiles": ["<node_internals>/**"],"args": [],"program": "${workspaceFolder}/testProgram","stopAtEntry": false,"cwd": "${workspaceFolder}","externalConsole": true, "MIMode": "gdb","setupCommands": [{"description": "Enable pretty-printing for gdb","text": "-enable-pretty-printing","ignoreFailures": true}], "miDebuggerPath":"/opt/hisi-linux/x86-arm/arm-himix200-linux/bin/arm-himix200-linux-gdb","miDebuggerServerAddress": "192.168.10.10:1234"}]
}
type：调试的类型
name：配置文件的名字
request：配置文件的请求类型，有 launch 和 attach 两种，具体看官方文档
program：可执行文件的路径和文件名称
args：主函数调用时传入的参数
stopAtEntry：设为true时程序将暂停在程序入口处
cwd：调试时的工作目录
externalConsole：调试时是否显示控制台窗口
MIMode：指定 VS Code 连接的调试器，必须为 gdb 或者 lldb
miDebuggerPath：调试器路径,这个需要修改为上面编译好的那个，我这里是替换了海思原来的gdb工具
miDebuggerServerAddress： 板子 ip
