On 6/5/19 10:19 AM, Michael Rolnik wrote:
> Richard.
>
> We use break instruction for testing.
> (Here
> https://github.com/seharris/qemu-avr-tests/tree/master/instruction-tests).
> Each test is a big list of small tests with a break between them. We run the
> tests on HW and on QEMU then compare register after each break. If we don't
> implement break the way Sarah suggested we have no way of testing.
> What do you suggest?
Hmm.
Ordinarily I would say to use some sort of syscall/exception/interrupt
instruction, but I see that avr doesn't have any of those.
You could use "call breakpoint" instead of using raw BREAK instructions with
the implementation just being
breakpoint:
ret
and have gdb issue "break breakpoint" before beginning.
But perhaps I'm being over-pedantic about this, and someone else should weigh
in. Alex, I nominate you since you most recently touched gdbserver. ;-)
r~
