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satman: print better debugging information on exception

This commit is contained in:
Sebastien Bourdeauducq 2018-09-11 18:23:36 +08:00
parent f5b386c0d8
commit a23af67f2b
1 changed files with 20 additions and 2 deletions
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22
artiq/firmware/satman/main.rs
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@ -1,4 +1,4 @@
#![feature(never_type, panic_implementation, panic_info_message, const_slice_len)]
#![feature(never_type, panic_implementation, panic_info_message, const_slice_len, try_from)]
#![no_std]
#[macro_use]
@ -7,7 +7,8 @@ extern crate log;
extern crate board_misoc;
extern crate board_artiq;
use board_misoc::{csr, ident, clock, uart_logger};
use core::convert::TryFrom;
use board_misoc::{csr, irq, ident, clock, uart_logger};
use board_artiq::{i2c, spi, si5324, drtioaux};
#[cfg(has_serwb_phy_amc)]
use board_artiq::serwb;
@ -371,6 +372,23 @@ pub extern fn main() -> i32 {
#[no_mangle]
pub extern fn exception(vect: u32, _regs: *const u32, pc: u32, ea: u32) {
let vect = irq::Exception::try_from(vect).expect("unknown exception");
fn hexdump(addr: u32) {
let addr = (addr - addr % 4) as *const u32;
let mut ptr = addr;
println!("@ {:08p}", ptr);
for _ in 0..4 {
print!("+{:04x}: ", ptr as usize - addr as usize);
print!("{:08x} ", unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
print!("{:08x} ", unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
print!("{:08x} ", unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
print!("{:08x}\n", unsafe { *ptr }); ptr = ptr.wrapping_offset(1);
}
}
hexdump(pc);
hexdump(ea);
panic!("exception {:?} at PC 0x{:x}, EA 0x{:x}", vect, pc, ea)
}