stack size limit on ppc/ppc64

[Alan Modra]

On Wed, Nov 05, 2003 at 09:13:30AM +0530, Anil K Prasad wrote:
>
> >There are a few things to change for ppc64:
> >- add the 64bit versions of the store with update instructions
> >- keep in mind the 64bit ABI allows space below the sp to be used (it
> >  looks like the 2048 constant will cover this)
>
> >Does anyone feel in the mood to work on this?
>
> I can work your code fragment and fine tune it..

ppc64 stack frames are required to be set up using stdu or stdux (set
back chain and update sp atomically), so I can't see that it's necessary
to check all the byte and word insns.

--
Alan Modra
IBM OzLabs - Linux Technology Centre

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