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countertest: update README

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Xu, Zefan 2024-05-30 13:22:05 +08:00
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tests/countertest/README.md
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@ -6,3 +6,12 @@ This program provides a self-test for the counter CSRs, testing the following fe
- Functionality of `mcountinhibit`.
This program provides a simple framework for privilege mode switching and expected exception capture, which could be applied to other test programs.
## How-to
In `tests/countertest`, run
```
make ARCH=riscv64-xs
```
You will get `countertest-riscv64-xs.bin` in `tests/countertest/build`.
This program would `HIT GOOD TRAP` if there were no fatal error.