[ECOS] HAL_SavedRegisters (ecos 1_3_1)

[Rafael Rodríguez Velilla]

Gary Thomas wrote:

> On 31-May-2001 Jonathan Larmour wrote:
> > Rafael Rodríguez Velilla wrote:
> >>
> >>   I can't find any place where the member msr of the struct
> >> HAL_SavedRegisters is used (I have reviewed only the ARM
> >> implementation). I think that this member should be omitted from the
> >> struct.
> >
> >>From what I can see you are right (although Gary should probably confirm).
> > The only thing is that if we remove it now, it may cause incompatibilities
> > between a GDB stub in ROM and applications, if built from different
> > sources, since ARMREG_SIZE in vectors.S will have changed.
>
> I'm pretty sure that I defined that register _just in case_ it was important.
> It might still be with some future version of the ARM chip.
>
> I'd rather not remove it, both to retain pure compatability and for stability
> reasons.  I also don't see much benefit from saving 4 bytes.

  What about using a cdl option to let the user decide if he wants that kind of
backward compatibility?


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Rafael Rodríguez Velilla        rrv@tid.es
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