//! Defining the panic handler //! //! The panic handler can be defined through the `panic_fmt` [language item][1]. //! Make sure that the "abort-on-panic" feature of the cortex-m-rt crate is //! disabled to avoid redefining the language item. //! //! [1]: https://doc.rust-lang.org/unstable-book/language-features/lang-items.html //! //! --- //! //! ``` //! //! #![feature(core_intrinsics)] //! #![feature(lang_items)] //! #![feature(used)] //! #![no_std] //! //! extern crate cortex_m; //! extern crate cortex_m_rt; //! extern crate cortex_m_semihosting; //! //! use core::fmt::Write; //! use core::intrinsics; //! //! use cortex_m::asm; //! use cortex_m_semihosting::hio; //! //! fn main() { //! panic!("Oops"); //! } //! //! #[lang = "panic_fmt"] //! #[no_mangle] //! pub unsafe extern "C" fn rust_begin_unwind( //! args: core::fmt::Arguments, //! file: &'static str, //! line: u32, //! col: u32, //! ) -> ! { //! if let Ok(mut stdout) = hio::hstdout() { //! write!(stdout, "panicked at '") //! .and_then(|_| { //! stdout //! .write_fmt(args) //! .and_then(|_| writeln!(stdout, "', {}:{}:{}", file, line, col)) //! }) //! .ok(); //! } //! //! intrinsics::abort() //! } //! //! // As we are not using interrupts, we just register a dummy catch all handler //! #[link_section = ".vector_table.interrupts"] //! #[used] //! static INTERRUPTS: [extern "C" fn(); 240] = [default_handler; 240]; //! //! extern "C" fn default_handler() { //! asm::bkpt(); //! } //! ``` // Auto-generated. Do not modify.