Rust Based OS Kernel

A bare-metal operating system kernel written in Rust, following the excellent Writing an OS in Rust blog series by Philipp Oppermann.

Current Features

• VGA Text Mode: Custom VGA buffer implementation for kernel output
• Exception Handling: Complete Interrupt Descriptor Table (IDT) setup
• Double Fault Prevention: Task State Segment (TSS) with Interrupt Stack Table (IST)
• Serial Communication: UART support for debugging and testing
• Custom Test Framework: Integration and unit testing without std library
• Memory Safety: Volatile memory access and proper stack overflow protection

Building and Running

Prerequisites

• Rust nightly toolchain
• bootimage crate for creating bootable disk images
• QEMU for emulation

Setup

# Install required components
rustup component add rust-src
cargo install bootimage

# Build the kernel
cargo build

# Run in QEMU
cargo run

# Run tests
cargo test

Configuration

The project uses custom target specification (x86_64-os.json) and requires:

• #![no_std] - No standard library
• #![no_main] - Custom entry point
• Nightly Rust features for interrupt handling

License

This project is created for educational purposes following the MIT-licensed blog series.

Work in Progress