On Mon, Sep 15, 2014 at 9:15 PM, Peter Maydell <peter.mayd...@linaro.org> wrote: > On 15 September 2014 20:59, Max Filippov <jcmvb...@gmail.com> wrote: >> I've tested xtensa part and have noticed no difference with or without >> this patch: >> gdb connected to qemu gdbstub always stops right after the watched >> instruction. >> I guess that without this patch I should have seen gdb stopping not right >> after >> the watched instruction, but one instruction later, right? > > Yes, that is the behaviour I saw on ARM. Perhaps for > Xtensa gdb thinks it has no watchpoint support at all > and is using its "singlestep-and-test" fallback?
Hmmm, interesting. Yes, I see gdb single-stepping and reading watched buffer. With the patch it first stops at the store instruction, without it -- at the next one. In both cases the following single-step request does nothing. Need to look at it some more. -- Thanks. -- Max
