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Re: [avr-libc-dev] [bugs #4101] setjmp/longjmp destroy changes in global

From: Paul Schlie
Subject: Re: [avr-libc-dev] [bugs #4101] setjmp/longjmp destroy changes in global registers
Date: Mon, 17 Jan 2005 18:20:00 -0500
User-agent: Microsoft-Entourage/

> From: Joerg Wunsch <address@hidden>
> Anyway, as GCC 4.0 has not yet been released, we cannot release it in
> a version of avr-libc before.  We could commit it to CVS already, but
> then we'd have to require any CVS users to upgrade to pre-4.0
> experimental versions of GCC, which I'd rather like to avoid.
> I'll see to produce a pre-4 GCC version for my own tests though.
> -- 

Understood, however inspecting other setjump.s implementations for
other cpu's in newlib, I notice they also don't seem to save globals,
Nor seem to be dependant on particular cpu versions, wonder if r3-r17
should never have been saved by setjump?

(all seem most similar to the newly proposed patched setjump,
 although recognize that there may be some functionality missing
 in avr.h/c which correct behavior is dependant on, but it's not
 clear that this is the case?)

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