Rcore Documentation -

extern "C" { fn __alltraps(); } unsafe { stvec::write(__alltraps as usize, TrapMode::Direct); }

If you’ve spent any time in systems programming, embedded development, or operating system tinkering, you’ve likely heard the name rcore whispered in enthusiast forums or GitHub repos. But what exactly is rcore, and more importantly, how do you actually use its documentation without getting lost? rcore documentation

Let’s break it down. First, a quick definition. rcore (often styled as rCore ) is an educational operating system written in Rust. It’s designed to teach OS development from scratch—think xv6 but with Rust’s memory safety and modern tooling. The project includes multiple stages (rCore Tutorial, rCore Camp, rCore for RISCV), and its documentation is the primary gateway for anyone wanting to build their own kernel. extern "C" { fn __alltraps(); } unsafe {