Adding GDB BSPs to rtems-tester

[Gedare Bloom]

On Sat, Mar 21, 2020 at 12:54 AM Niteesh G. S. <niteesh.gs at gmail.com> wrote:
>
> On Thu, Mar 19, 2020 at 11:43 PM Gedare Bloom <gedare at rtems.org> wrote:
>>
>> On Thu, Mar 19, 2020 at 11:56 AM Niteesh G. S. <niteesh.gs at gmail.com> wrote:
>> >
>> > Hello,
>> >
>> > While looking for small tasks to take up, Gedare mentioned about adding GDB BSPs
>> > to rtems-tester. Can some please explain a bit more of what has to be done? I guess
>> > we have to write configuration files for BSPs that support simulation in GDB. If so, how
>> > could I find those BSPs, do I have to individually look at all the BSPs?
>> >
>> As I said off-list, I don't know if there's a list of GDB BSPs, but I
>> know of at least:
>> powerpc/psim
>> mips/jmr3904
>> moxie/moxiesim
>> arm/gdbarmsim
>> sh/shsim
>>
>> I have no idea what any of their statuses are or if they are expected
>> to work. The first step would be building them and see if they run
>> anything. After that, you should look at the existing tester scripts for
>> some targets:
>>   rtems-tools.git/tester/rtems/testing/bsps
>> I see scripts for most of what I listed above, so the next step would
>> be trying to run them via tester and see if it works.
>
>
> I built the simsh1 BSP but couldn't get it running. Before trying it with rtems-run
> and rtems-test I tried manually loading it in the simulator. But gdb doesn't respond
> as soon as I execute the run command. The only way to exit it was using ctrl-c and GDB
> responds with
> sim_events_schedule_after_signal - buffer overflow
> Quit
> Aborted (core dumped)
> I tried setting breakpoints within GDB but it never seems to hit them. I tried running the
> examples through rtems-test results in ta imeout.
>
> Due to the slow internet connection and slow development machine, I could only build
> and test a few BSPs. In case if anyone has an already built tool suite and BSP for the
> mentioned arch please try them out.
>
I don't know that anyone uses this architecture. Don't spend too much
effort trying to debug the simulator :)

>> BTW: Did I mention adding these to tester, or did I mention creating
>> build sets for them? Anyway, I think the GDB simulator builds by
>> default with the toolchain, so there is no difference between a BSP
>> buildset (such as for jmr3904) and one that supports running on GDB.
>> At least, I think so. It is worth verifying.
>>
>> Gedare
>>
>> > Thank you,
>> > Niteesh.
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