Re: [PATCH 2/2] Enable range stepping for ARM on GDBServer

Antoine Tremblay
2016-09-01T15:21:51Z

Pedro Alves writes:

> On 08/31/2016 08:14 PM, Antoine Tremblay wrote:
>
>> I'm sorry I can't be more helpful at the moment but I wanted to post
>> this issue before I have to leave for a while.
>
> Understood. Does enabling range stepping unblock something else?

It would unblock ARM tracepoints, as per Yao's requirements...

>
>> However I wonder if range stepping or ARM depends on this of if we
>> should treat it as two different issues ?
>
> Offhand, the knee-jerk reaction is that if enabling range stepping
> causes a regression, then it sounds like range stepping has a
> problem that should be fixed and it may be premature to enable it.
>
> I see a parallel here with all the all-stop-on-top-of-non-stop
> work, which exposed a ton of such latent problems that were treated
> as dependencies that needed to be addressed first. That's what
> resulted in the creation of this test (see 'git log ede9f622af1f').
>
> as-ns is enabled by default on native, but not on remote. It sounds
> like testing with as-ns enabled on remote could reveal the same
> range stepping problems, but all over the testsuite instead. :-/
>

I see, in that sense we could consider it unsupported for now in remote
and fix it along the rest of the issues as non-stop gains support ?

Yao any comments on this?

Thanks,
Antoine