From: "Joseph S. Myers" <joseph@codesourcery.com>
To: Luis Machado <luisgpm@linux.vnet.ibm.com>
Cc: Thiago Jung Bauermann <bauerman@br.ibm.com>, gdb-patches@sourceware.org
Subject: Re: [PATCH-ppc 0/5] Add feature description for new VSX register set
Date: Sat, 26 Jul 2008 11:20:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.64.0807261118470.16205@digraph.polyomino.org.uk> (raw)
In-Reply-To: <1217044165.29012.107.camel@gargoyle>
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
next prev parent reply other threads:[~2008-07-26 11:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-25 20:16 Luis Machado
2008-07-25 21:01 ` Joseph S. Myers
2008-07-25 21:30 ` Thiago Jung Bauermann
2008-07-25 21:46 ` Joseph S. Myers
2008-07-26 3:50 ` Luis Machado
2008-07-26 11:20 ` Joseph S. Myers [this message]
2008-08-02 3:27 ` Thiago Jung Bauermann
2008-08-08 15:16 ` Luis Machado
2008-08-14 19:33 ` Ulrich Weigand
2008-08-15 15:49 ` Luis Machado
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