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