SIS MP success

[Joel Sherrill]

On Fri, Dec 14, 2018, 1:07 AM Chris Johns <chrisj at rtems.org wrote:

> On 13/12/2018 20:30, Sebastian Huber wrote:
> > On 13/12/2018 09:16, Jiri Gaisler wrote:
> >>> I use the SIS every day for RTEMS development and test suite runs. The
> >>> SMP support would be a very valuable for RTEMS development. If we can
> >>> get also code coverage from it, then it would be perfect.
> >> I can look at the coverage support.
>
> This would be fantastic. The support for detailed analysis of trace data in
> RTEMS is growing. Covoar has had a lot of work done on it this year. An
> efficient cross-host way to get good trace data will improve the quality
> of RTEMS.
>
> I, like Sebastian, use the SIS for my development work
>

Me too. And we still use it as the first bsp and simulator we recommend in
the getting started. It is simple to use, fast and trustworthy.


> >> Is there a standardized format for coverage data that I should use?
> >
> > I am not sure if there exists a standardized format. but Joel is the
> expert in
> > this area.
>
> The covoar tool currently support the couverture qemu trace format. I am
> not
> sure if it is something Adacore invented.
>

I think that format is something AdaCore invented. It's not bad but I wish
they would push harder to get the trace support into upstream qemu.

But couverture also supports the tsim bitmap format. It can support
anything since that's a factory class and you can implement it yourself.

But Jiri should know the tsim format so that would be my recommendation. He
might remember adding a bit for branch take long ago at my request. :)


> The covoar tool is run from within the rtems-test tool when the BSP
> supports
> coverage. It has the ability to support a number of formats so we can add
> what
> is created. I suggest any format that is compact and can be parsed in a
> single
> pass should be fine.
>

The tsim bitmap format is easy. If it produces that there will be no
modifications.


> The ability to control the trace file name would be nice. The rtems-test
> tool
> runs the sis simulator in parallel on the available cores and we now have a
> number of executables in the same directory.
>

+1

The riscv news and move of the simulator is great news.

Moving grlib is also useful. We are working on an arm bsp.

This is awesome!

>
> Chris
>
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