https://github.com/d0iasm/rvemu-for-book

Reference implementation for the book "Writing a RISC-V Emulator in Rust".
https://github.com/d0iasm/rvemu-for-book

emulator riscv riscv-emulator rust xv6

Last synced: 3 months ago
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Reference implementation for the book "Writing a RISC-V Emulator in Rust".

• Host: GitHub
• URL: https://github.com/d0iasm/rvemu-for-book
• Owner: d0iasm
• License: mit
• Created: 2020-04-10T13:21:37.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2022-08-11T05:20:51.000Z (about 2 years ago)
• Last Synced: 2024-07-19T01:06:35.469Z (4 months ago)
• Topics: emulator, riscv, riscv-emulator, rust, xv6
• Language: Rust
• Homepage: http://book.rvemu.app/
• Size: 444 KB
• Stars: 350
• Watchers: 22
• Forks: 27
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# rvemu-for-book

Reference implementation of [the book](https://book.rvemu.app/), *Writing a RISC-V Emulator from Scratch in 10 Steps*. The goal of this code and the book is runnning [xv6](https://github.com/mit-pdos/xv6-riscv) in our emulator.

This is based on original RISC-V emulator [rvemu](https://github.com/d0iasm/rvemu) in Rust.

## How to run xv6

```

$ cd step10 // move to the step10 directory

$ cargo run ./xv6-kernel.bin ./xv6-fs.img

```

![demo.png](https://raw.githubusercontent.com/d0iasm/rvemu-for-book/master/demo.png)

## Step to implement a RISC-V emulator

See https://book.rvemu.app/

- Step 1: Setup and Implement Two Instructions

- Step 2: RV64I Base Integer Instruction Set

- Step 3: Control and Status Registers

- Step 4: Privileged Instruction Set

- Step 5: Exceptions

- Step 6: UART (a universal asynchronous receiver-transmitter)

- Step 7: PLIC (a platform-level interrupt controller) and CLINT (a core-local interrupter)

- Step 8: Interrupts

- Step 9: Virtio

- Step 10: Virtual Memory System

Each step has a `diff` file generated by `diff -x target -r step step > diff__`.