Re: [PATCH] S/390 DWARF-2 CFI frame support

Ulrich Weigand
2003-12-05T02:16:36Z

Richard Henderson wrote:
> On Fri, Dec 05, 2003 at 03:03:52AM +0100, Ulrich Weigand wrote:
> > However, there is one point that requires special consideration
> > in any case: what if the stack pointer is unspecified? On s390,
> > treating it as preserved from the inner frame is correct, but
> > on i386 and other platforms I guess this would be wrong -- it
> > needs to be set to the CFA there (which is wrong on s390 due
> > to the CFA bias we have).
>
> I thought s390 always provided a REG_SAVED for the stack pointer?

Except in leaf functions ...

Bye,
Ulrich

--
Dr. Ulrich Weigand
weigand@informatik.uni-erlangen.de