From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 23733 invoked by alias); 2 Aug 2012 17:49:24 -0000 Received: (qmail 23713 invoked by uid 22791); 2 Aug 2012 17:49:22 -0000 X-SWARE-Spam-Status: No, hits=-1.8 required=5.0 tests=AWL,BAYES_00 X-Spam-Check-By: sourceware.org Received: from cheddar.halon.org.uk (HELO cheddar.halon.org.uk) (217.10.144.130) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 02 Aug 2012 17:49:08 +0000 Received: from bsmtp by cheddar.halon.org.uk with local-bsmtp (Exim 4.72) (envelope-from ) id 1SwzWE-0001SO-QR; Thu, 02 Aug 2012 18:49:06 +0100 Received: from stemci01 by e102122-lin with local (Exim 4.76) (envelope-from ) id 1SwzW9-0002bd-1P; Thu, 02 Aug 2012 18:49:01 +0100 Date: Thu, 02 Aug 2012 17:49:00 -0000 From: Steve McIntyre To: Roland McGrath Cc: libc-alpha@sourceware.org, libc-ports@sourceware.org Subject: Re: ARM hard-float ABI: add ldconfig flag value Message-ID: <20120802174900.GH24537@linaro.org> References: <20120727160941.GA13597@linaro.org> <20120802165658.GG24537@linaro.org> <20120802172843.AC5092C0DF@topped-with-meat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20120802172843.AC5092C0DF@topped-with-meat.com> X-attached: unknown User-Agent: Mutt/1.5.21 (2010-09-15) Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org X-SW-Source: 2012-08/txt/msg00011.txt.bz2 Hi Roland, On Thu, Aug 02, 2012 at 10:28:43AM -0700, Roland McGrath wrote: >libc-ports@sourceware.org is the right list for discussing ARM. Ah, OK. I'd seen the mergeback of ports and guessed wrong for the mailing list. Apologies for that. >OSABI is used in a generic way and should not be used for machine-specific >purposes. Are you sure? Various docs say that values above 64 are specifically set aside for machine-specific values, hence why I'm looking at using 65 and 66 here. >An e_flags (EF_*) bit is probably a better choice. There are >already these bits (among others): > #define EF_ARM_SOFT_FLOAT 0x200 > #define EF_ARM_VFP_FLOAT 0x400 > #define EF_ARM_MAVERICK_FLOAT 0x800 >But I don't know the history of their use. Off hand EF_ARM_VFP_FLOAT seems >like it's already what you want, but maybe it has a different meaning (like >just that it uses VFP, not that the ABI specifies using VFP registers in >the calling convention). Exactly, those values are describing needed/used hardware, not ABI. Cheers, -- Steve McIntyre steve.mcintyre@linaro.org Linaro.org | Open source software for ARM SoCs