[PATCH] Export _NCPUWORDS as variable for access from within the gnat-rts

Joel Sherrill joel at rtems.org
Thu Oct 29 13:49:55 UTC 2015

Sorry. I am trying to use joel at rtems.org more and this
actually bounced from the rtems devel mailing list. I
have a habit to break. :(

On 10/29/2015 8:14 AM, Jan Sommer wrote:
> Hi,
> This patch will make the define _NCPUWORDS accessible for the ada runtime. It is necessary to model the pthread_attr_t implementation for rtems  in Ada.
> We had a stack corruption because the C an Ada declarations of the type where out of synch.
> I will send the updated s-osinte-rtems.ads to  gcc if this patch is accepted.
> I put devel at rtems.org CC for input from the rtems developers.

Is it possible to define this in the RTEMS Ada glue file?

Generally, I like the Ada support to be self-contained and
have no impact on anything else. This puts an Ada specific
variable in generic code.

This is similar to how I had to do the Ada task minimum
stack size. It could have gone in more common code but
nothing else uses it so should not be impacted.

Plus newlib doesn't know anything about our Ada glue layer.
Best to keep it that way.

> Best regards,
>      Jan

Joel Sherrill, Ph.D.
Check out RTEMS at https://www.rtems.org
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