RT-Thread-RT-Thread RISCV64 qemu 极简上手(不用思考就能跑起来)RT-Thread问答社区

RT-Thread RISCV64 qemu 极简上手(不用思考就能跑起来)

发布于 2024-06-26 11:23:48 浏览：648 订阅该版

[tocm]

# RT-Thread  qemu-virt64-riscv Bsp 使用（linux环境）

## 1. 准备：

1. 下载源码：https://github.com/RT-Thread/rt-thread 使用master分支
2. 下载env：https://github.com/RT-Thread/env readme 中有linux环境安装方法
3. 准备工具链：bsp下有说明，可以替换为其他tool
4. 准备qemu：bsp下有说明，可以替换为其他qemu

## 2. 编译：

1. 这里使用最简单的方法：直接修改  EXEC_PATH  = '工具链路径'，将工具链路径替换为自己工具链路径

示例：

```python
   if os.getenv('RTT_CC'):
       CROSS_TOOL = os.getenv('RTT_CC')
   
   if  CROSS_TOOL == 'gcc':
       PLATFORM    = 'gcc'
       EXEC_PATH   = '/home/rv/riscv2/riscv/bin'
   ```

2. 在相对路径：bsp/qemu-virt64-riscv下执行 `scons -j16`，编译：

示例：

```shell
   rv@RSH-PC0001:~/rt-thread/bsp/qemu-virt64-riscv$ scons -j16
   scons: Reading SConscript files ...
   Newlib version: 4.3.0
   scons: done reading SConscript files.
   scons: Building targets ...
   scons: building associated VariantDir targets: build
   CC build/applications/main.o
   ```

结果：

```shell
   CC build/kernel/src/timer.o
   LINK rtthread.elf
   /home/rv/riscv2/riscv/bin/../lib/gcc/riscv64-unknown-elf/13.2.0/../../../../riscv64-unknown-elf/bin/ld: warning: rtthread.elf has a LOAD segment with RWX permissions
   Memory region         Used Size  Region Size  %age Used
               SRAM:      181200 B        16 MB      1.08%
   riscv64-unknown-elf-objcopy -O binary rtthread.elf rtthread.bin
   riscv64-unknown-elf-size rtthread.elf
      text    data     bss     dec     hex filename
    127507    1356   52332  181195   2c3cb rtthread.elf
   scons: done building targets.
   ```

在当前路径下生成rtthread.elf可执行文件。

## 3.运行：

在当前路径下执行 ./qemu-nographic.sh启动。

## 4.调试

在vscode中点击调试选项，点击创建 launch.json文件

示例

![screenshot_debug.png](https://oss-club.rt-thread.org/uploads/20240626/1d316705971413e5f87f8bbf9275c58e.png)

将文件内容替换为下文：

```json
{
  "version": "0.2.0",
  "configurations": [
    {
      "name": "Debug d1 @ Linux",
      "type": "cppdbg",
      "request": "launch",
      "args": [],
      "stopAtEntry": true,
      "externalConsole": true,
      "cwd": "${workspaceRoot}",
      "program": "${workspaceRoot}/bsp/qemu-virt64-riscv/rtthread.elf",
      "miDebuggerPath": "/home/rv/riscv/bin/riscv64-unknown-elf-gdb",
      "miDebuggerServerAddress": "localhost:1234",
      "setupCommands": [
        {
          "text": "cd ${workspaceRoot}"
        },
        {
          "description": "-enable-pretty-printing",
          "text": "-enable-pretty-printing",
          "ignoreFailures": true
        },
        {
          "description": "Display all registers",
          "text": "info registers",
          "ignoreFailures": true
        }
      ],
      "logging": {
        "moduleLoad": false,
        "trace": true,
        "engineLogging": true,
        "programOutput": true,
        "exceptions": true
      },
    }
  ]
}
```

在终端运行：qemu-dbg.sh

按F5启动调试

愉快的开始学习吧！！！

如果跑不起来，不要怀疑自己，那一定是我的问题，请在评论区@我

拜拜啦~