Rust on Arm Cortex-R

This repository contains support libraries for Rust on Arm Cortex-R.

These libraries have been written by Ferrous Systems, and are based on the cortex-m libraries from the Rust Embedded Devices Working Group.

There are currently three libraries here:

• cortex-r - support library for Cortex-R CPUs (like cortex-m)
• cortex-r-rt - run-time library for Cortex-R CPUs (like cortex-m-rt)
• arm-semihosting - semihosting library for many kinds of Arm CPU (like cortex-m-semihosting)
• arm-targets - a helper library for your build.rs that sets various --cfg flags according to the current target

There are also example programs for QEMU in the cortex-r-examples folder.

Licence

• Copyright (c) Ferrous Systems, 2025
• Copyright (c) The Cortex-M Team cortex-m@teams.rust-embedded.org

Licensed under either MIT or Apache-2.0 at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you shall be licensed as above, without any additional terms or conditions.