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runtime: print hex dumps around PC/EA in case of exception. 

For #1026.
This commit is contained in:
whitequark 2018-06-01 21:17:59 +00:00
parent 985fd7377b
commit d686d33093
1 changed files with 19 additions and 2 deletions
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21
artiq/firmware/runtime/main.rs
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@ -1,4 +1,4 @@
#![feature(lang_items, alloc, global_allocator, try_from, nonzero, nll, needs_panic_runtime)]
#![feature(lang_items, alloc, global_allocator, try_from, nonzero, nll, needs_panic_runtime, asm)]
#![no_std]
#![needs_panic_runtime]
@ -302,7 +302,24 @@ pub extern fn exception(vect: u32, _regs: *const u32, pc: u32, ea: u32) {
_ => panic!("spurious irq {}", irq::pending_mask().trailing_zeros())
}
},
_ => panic!("exception {:?} at PC 0x{:x}, EA 0x{:x}", vect, pc, ea)
_ => {
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)
}
}
}