Module f3::exception

Exceptions

All the exceptions prefixed with an underscore (_) can overridden by the top crate:

//! Override the hard fault exception

#![feature(asm)]
#![no_main]
#![no_std]

#[macro_use]
extern crate cortex_m;
extern crate f3;

use core::ptr;

#[export_name = "main"]
pub fn main() -> ! {
    unsafe {
        // Trigger a `hard_fault` exception (using UNSAFE code, of course!) and ...
        ptr::write_volatile(0x0000_0000 as *mut u32, 0xdead_beef);
    }

    loop {}
}

#[export_name = "_hard_fault"]  // <-- Important! Note the underscore.
pub extern "C" fn my_hard_fault_handler() {
    unsafe {
        // .. you should reach THIS breakpoint!
        bkpt!();
    }

    loop {}
}

Enums

Exception

Kind of exception

Statics

EXCEPTIONS

List of all the exceptions minus the reset handler as allocated in the vector table.

Functions

_bus_fault	Pre-fetch fault, memory access fault.
_default_handler
_hard_fault	All class of fault.
_memmanage_fault	Memory management.
_nmi	Non-maskable interrupt.
_pendsv	Pendable request for system service
_svcall	System service call via SWI instruction
_systick	System tick timer
_usage_fault	Undefined instruction or illegal state.
reset	Reset handler