59 lines
1.4 KiB
Rust
59 lines
1.4 KiB
Rust
//! 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();
|
|
}
|