Example Assembly

[Joel Sherrill]

Hi

My somewhat brute force approach is to write a C function that does
something very similar to what I want to do. In this case, make a to
the same method. Be sure to make the method extern to your test method
so GCC doesn't do any magic inlining for you.

I would recommend compiling at -Os because the code tends to look more
hand written.

Then use the generated .S file as a go by.  A bit crude but at least you are
starting with a decent example.

--joel


On Thu, Jan 9, 2020 at 2:01 PM Christian Mauderer <list at c-mauderer.de>
wrote:

> On 09/01/2020 13:58, Richard.Glossop at L3Harris.com wrote:
> > Is anyone aware of an example of calling a ‘C’ function from assembly
> > for the LEON3 (SPARC assembly)?
>
> Maybe something like
>
>
>
> https://git.rtems.org/rtems/tree/cpukit/score/cpu/sparc/cpu_asm.S?id=362cf319d44e7e64987f12aa36ea030e6298c586#n610
>
> or
>
>
>
> https://git.rtems.org/rtems/tree/bsps/sparc/shared/start/start.S?id=362cf319d44e7e64987f12aa36ea030e6298c586#n378
>
> helps?
>
> >
> >
> >
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> Best regards
>
> Christian
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