xv6-labs-2020

Labs of 2020 MIT 6.S081

Set up & Preparation

This set up guide for macOS is from mit 6.S081 Tools, but the setup may be different on different macOS because of different locations which installed packages or tools in. So it's my tools setup guides. And may it help beginners

First, install developer tools:

xcode-select --install

Next, install Homebrew, a package manager for macOS:

/usr/bin/ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"

Next, install the RISC-V compiler toolchain: (notice this may not work with your homebrew or os, but it's easy to find the way works)

brew tap riscv/riscv
brew install riscv-tools

The brew formula may not link into /usr/local. You will need to update your shell's rc file (e.g. ~/.bashrc) to add the appropriate directory to $PATH. And then you should run source ~/.bashrc

PATH=$PATH:/usr/local/opt/riscv-gnu-toolchain/bin

Finally, install QEMU:

brew install qemu

On my mac mojave 10.14.6, these qemu tools and vms are in the /user/local/Cellar/qemu/5.2.0_1/bin, don't forget to add the directory to $PATH and run the source command. Otherwise you may not boot your xv6 using qemu.

Progress

Each lab's exercise codes are in the branch which shares the same name.

• util: Unix utilities
• syscall: System calls
• pgtbl: Page tables
• traps: Traps
• lazy: lazy allocation
• cow: Copy-on-write
• thread: Multithreading
• lock: Lock
• fs: File System
• mmap: mmap
• net: Network driver