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Re: [PATCH-ppc 0/5] Add feature description for new VSX register set

On Sat, 26 Jul 2008, Luis Machado wrote:

> > So will some of the bits that don't overlap be call-saved?  If so, they 
> > need setjmp/longjmp support and unwind support, including in the signal 
> > unwind code in GCC.  I presume such patches to the other toolchain 
> > components will follow in due course if needed.
> 
> No, those bits will be volatile, thus will be call-clobbered.

Thanks for the information.  New call-clobbered bits are a lot simpler 
than new call-saved ones - you don't need setjmp/longjmp/unwind support, 
though you do still need to specify and implement how they are described 
in DWARF debug information.

-- 
Joseph S. Myers
joseph@codesourcery.com
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