ors

ors is an experimental x86_64 OS implementation with Rust.

Setup

# Rust nightly required at the moment
rustup default nightly

# Build ors-loader.efi and ors-kernel.elf
make

# Run on QEMU
make qemu
# ... is equivalent to
./qemu/make_and_run_image.sh \
    target/x86_64-unknown-uefi/debug/ors-loader.efi \
    target/x86_64-unknown-none-ors/debug/ors-kernel.elf

Comparison

ors is based on MikanOS, blog_os (Second Edition), and xv6.

[^1]: Maintaining the x86 version have stopped, and switched to the RISC-V version [^2]: UEFI is planned [^3]: Supports only very limited reading (by UEFI Block I/O) [^4]: RISC-V version of xv6 supports VirtIO over MMIO [^5]: blog_os supports Cooperative Multitasking at the moment [^6]: Read-only support [^7]: Simpler but similar to modern UNIX file systems, including crash recovering

Roadmap

• [ ] Complete ゼロからの OS 自作入門
  • [x] Chapter 0-3: Boot loader
  • [x] Chapter 4-5: Screen rendering
  • [x] Chapter 6, 12: User inputs
  • [x] Chapter 7: Interrupts
  • [x] Chapter 8: Physical memory management
  • [x] Chapter 9-10 (skipped)
  • [x] Chapter 11: Timers
  • [x] Chapter 13-14: Multitasking
  • [x] Chapter 15-16: Terminal and comamnds
  • [x] Chapter 17: File system
  • [ ] Chapter 18: User applications
  • [x] Chapter 19: Paging
  • [ ] Chapter 20: System calls
  • [ ] TBD
  • [ ] Chapter 27: Application memory management
  • [ ] TBD
• [x] Complete Writing an OS in Rust (second edition)
  • [x] Bare Bones
  • [x] Interrupts
  • [x] Memory Management
  • [x] Multitasking (Incomplete)
• [ ] Compare with xv6
• [ ] Enable multicore
• [ ] Try to implement TCP protocol stack

Resources

• ors uses Tamzen font.
• ors uses One Monokai Theme as a color scheme of the terminal.