https://github.com/duskmoon314/rcore-n

A simple os kernel based on rCore-Tutorial with user mode trap support
https://github.com/duskmoon314/rcore-n

Last synced: about 2 months ago
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A simple os kernel based on rCore-Tutorial with user mode trap support

• Host: GitHub
• URL: https://github.com/duskmoon314/rcore-n
• Owner: duskmoon314
• License: mit
• Created: 2021-05-28T05:57:52.000Z (over 3 years ago)
• Default Branch: master
• Last Pushed: 2023-12-15T02:50:08.000Z (about 1 year ago)
• Last Synced: 2024-10-10T20:50:00.143Z (2 months ago)
• Language: Rust
• Size: 869 KB
• Stars: 7
• Watchers: 2
• Forks: 8
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# rCore-N

> submodule of [Gallium70/rv-n-ext-impl](https://github.com/Gallium70/rv-n-ext-impl)

Based on [duskmoon314/rCore:ch6](https://github.com/duskmoon314/rCore/tree/ch6) (which is based on [rcore-os/rCore-Tutorial-v3:ch6](https://github.com/rcore-os/rCore-Tutorial-v3/tree/ch6))

Add support of **user mode trap**

## Example

![A user mode trap example](assets/example.png)

The user mode process triggers and handles `user soft interrupt` in the user mode itself.

## How to run

I prefer to use `just` and do not guarantee the correctness of the `makefile` in os.

### Build the environment

#### QEMU with extN support

I have added N Extension CSRs of RISC-V support to stable-5.0 of QEMU. [duskmoon314/qemu:riscv-N-stable-5.0](https://github.com/duskmoon314/qemu)

```bash

git clone https://github.com/duskmoon314/qemu.git

mkdir qemu-build

cd qemu-build

../qemu/configure --target-list="riscv64-softmmu"

make -j8

```

#### install just

We can install just via cargo

```bash

cargo install just

```

### build and run

```bash

cd os

LOG=DEBUG just run

```

> There are 5 levels for logger

>

> ERROR, WARN, INFO, DEBUG, TRACE

>

> Use via `LOG=XXXXX just run`