From owner-svn-src-all@FreeBSD.ORG Wed Feb 13 14:00:13 2013 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 487D5E87; Wed, 13 Feb 2013 14:00:13 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) by mx1.freebsd.org (Postfix) with ESMTP id DDD6239C; Wed, 13 Feb 2013 14:00:12 +0000 (UTC) Received: from tom.home (kostik@localhost [127.0.0.1]) by kib.kiev.ua (8.14.6/8.14.6) with ESMTP id r1DE06Bo001025; Wed, 13 Feb 2013 16:00:06 +0200 (EET) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.7.4 kib.kiev.ua r1DE06Bo001025 Received: (from kostik@localhost) by tom.home (8.14.6/8.14.6/Submit) id r1DE06cM001024; Wed, 13 Feb 2013 16:00:06 +0200 (EET) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Wed, 13 Feb 2013 16:00:06 +0200 From: Konstantin Belousov To: Andrew Turner Subject: Re: svn commit: r246706 - head/lib/libc/arm/aeabi Message-ID: <20130213140006.GP2522@kib.kiev.ua> References: <201302120604.r1C64pEW008741@svn.freebsd.org> <511A5277.8060507@freebsd.org> <20130213222546.315be533@bender> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="CYsUdKbv42Pa+O69" Content-Disposition: inline In-Reply-To: <20130213222546.315be533@bender> User-Agent: Mutt/1.5.21 (2010-09-15) X-Spam-Status: No, score=-2.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FREEMAIL_FROM,NML_ADSP_CUSTOM_MED autolearn=no version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on tom.home Cc: Andrew Turner , svn-src-head@freebsd.org, svn-src-all@freebsd.org, src-committers@freebsd.org, Nathan Whitehorn X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Feb 2013 14:00:13 -0000 --CYsUdKbv42Pa+O69 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Feb 13, 2013 at 10:25:46PM +1300, Andrew Turner wrote: > On Tue, 12 Feb 2013 08:32:23 -0600 > Nathan Whitehorn wrote: >=20 > > A related question to these commits: are EABI binaries incompatible > > with systems built for OABI? And vice versa? If so, should we mint a > > new MACHINE_ARCH for ARM EABI (or OABI, I guess)? The usual > > implication of sharing a uname -p string is that systems can run each > > other's binaries -- that being broken is a strong argument for a new > > value. -Nathan >=20 > Yes OABI and EABI are binary incompatible. The plan is to kill off OABI > at some stage in the future when EABI is ready. At some time in the > future I plan on flipping the switch to make EABI the default but keep > OABI around to allow people a chance to update. >=20 > I am relying on ARM being a Tier 2 platform to change the ABI such that > we break backward compatibility without changing uname -p. I have the > start of a compat layer in the EABI project branch however never > finished it. If people are interested in updating this compatibility > layer I can point them at the code. >=20 > The other point is backwards compatibility should only be an issue for > ARMv4 and ARMv5 as these are the only cores we have support for on the > any of the current release branches. ARMv6 and ARMv7 is added to 10 and > there has not been an MFC to any of the stable branches. Because of > this I have even less hesitation to stitch the ABI for > TARGET_ARCH=3Darmv6. >=20 > In summary my plan is: > < 9: No change > >=3D 10: Switch to EABI and remove or depricate OABI Does the ABI change happen for the interfaces exported both by usermode components and kernel, or only usermode components ? Or, does the kernel exported ABI supports both OABI and EABI ? --CYsUdKbv42Pa+O69 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iQIcBAEBAgAGBQJRG5xlAAoJEJDCuSvBvK1BhysQAIAGjYFSu8d0tiy10NYobjmk zL1HgohTLtMjEdsjf32g5DLbRzdwNHM6TT9BIg83RH4nkP5lvrOKK1SHXJ1+n4pA Vuwnnnnb56z7aXIGowgI7znIlpYqvOgDRZqnoXEoELtzbx71gK53l7ZkrU/93NxD F2tQlQCI/8Z/93DNm0mXIj3s54TRvuEfVM8zyP1v+8eQIsyGm7YgWh2IDLIKwqXl 9FJ5a6OnsfjzYvgC1RUaBhPKWVm9RnA7F67LJCNarXWErzsoIKMzcbNCem2Jo6iS QYj7I50hRzo6Hd+wRNbfMg4NiQ5JcdIOzlc1V2nEU2DhiJ/6ndqpE/b8MwUPPM/M r2t5T9emI4OeEvlBFWwweCzV04qe+LKWm0lSfXKDPyyx8VE6G4FNRUoZdO3xcXrr VQoahAcoV5YSqW6HaW9IXV0bBMfIvbHT2gwAh16TrLs/3rMRt2/HA5/8N2mTpqyo r4Aik9/jBBRVZL2sPgVIPmHSLlubncmIrCT5IN5dykN69aziE6tPYZtdGrEbJqrS blAPp6ZxZmUmiH0Ti6jUT5Ae/uRj3h6zCLuf+MjwctyuxioAQ/SZJO4QDuLhn5Aq M8pRTr2JRRHP+CR8OlsMaQ7CNV8UEeARlZsLwN5YUc4nRpRnInEkNot8rawiHUfA zLZGJRKeTVU29aX7yPL9 =IpEu -----END PGP SIGNATURE----- --CYsUdKbv42Pa+O69--