From owner-freebsd-arm@freebsd.org Thu Oct 8 05:35:30 2015 Return-Path: Delivered-To: freebsd-arm@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 1EBE99D1F23 for ; Thu, 8 Oct 2015 05:35:30 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from vps.rulingia.com (vps.rulingia.com [103.243.244.15]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "vps.rulingia.com", Issuer "CAcert Class 3 Root" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 8CD18B05; Thu, 8 Oct 2015 05:35:26 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from server.rulingia.com (c220-239-242-83.belrs5.nsw.optusnet.com.au [220.239.242.83]) by vps.rulingia.com (8.15.2/8.15.2) with ESMTPS id t985ZDTh011606 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Thu, 8 Oct 2015 16:35:19 +1100 (AEDT) (envelope-from peter@rulingia.com) X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.15.2/8.15.2) with ESMTPS id t985Z7rP026830 (version=TLSv1.2 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Thu, 8 Oct 2015 16:35:07 +1100 (AEDT) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.15.2/8.15.2/Submit) id t985Z739026829; Thu, 8 Oct 2015 16:35:07 +1100 (AEDT) (envelope-from peter) Date: Thu, 8 Oct 2015 16:35:07 +1100 From: Peter Jeremy To: Konstantin Belousov Cc: FreeBSD-arm@freebsd.org Subject: Re: svn commit: r288983 - in head/sys/arm: arm include Message-ID: <20151008053507.GD85040@server.rulingia.com> References: <201510070912.t979Co21054138@repo.freebsd.org> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="8w3uRX/HFJGApMzv" Content-Disposition: inline In-Reply-To: <201510070912.t979Co21054138@repo.freebsd.org> X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.5.24 (2015-08-30) X-Greylist: Sender succeeded STARTTLS authentication, not delayed by milter-greylist-4.4.3 (vps.rulingia.com [103.243.244.15]); Thu, 08 Oct 2015 16:35:19 +1100 (AEDT) X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Oct 2015 05:35:30 -0000 --8w3uRX/HFJGApMzv Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable [moved from src-* lists] On 2015-Oct-07 09:12:50 +0000, Konstantin Belousov wrote: >Log: > A follow-up to r288492. In fact, revert the mentioned commit for > pre-VFPv3 processors, since they do require software support code to > handle denormals. For VFPv3 and later, enable flush-to-zero if > hardware does not claim full denormals arithmetic support by VMVFR1_FZ > field in mvfr1 register. Is there any reason we can't re-enable denormals on ARM11 and use the existing softfloat code to handle the underflow exceptions? This is the approach SPARC uses to handle non-normalised numbers. --=20 Peter Jeremy --8w3uRX/HFJGApMzv Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQJ8BAEBCgBmBQJWFgCLXxSAAAAAAC4AKGlzc3Vlci1mcHJAbm90YXRpb25zLm9w ZW5wZ3AuZmlmdGhob3JzZW1hbi5uZXRFRUIyOTg2QzMwNjcxRTc0RTY1QzIyN0Ux NkE1OTdBMEU0QTIwQjM0AAoJEBall6Dkogs0GgoP/iDraEB0L9K1UM1RzvN2g0dz LXcdw098z2T57t8/AAwUn1GE+rEhaPShnWEYAXmBdNiZCOkO2Supi8O5dGA0IYpf F14e+mYJlRS7hb5nfUETP/gYUB29pTQyIaovNf2TxZ7vx2rsSP4d7bfQiHxRmnNk EK8hZZvyBHTGKAF6Sz5BHBQYQ1/B11G04u1MNmlabwJPFX7mSQwJd7fYIA8JVRoN zGMNudpAaM9UpgApWDe9fHY2ExmzZrdxRrx/+c9/rZLf3Jng7IVD2Fkh+fADDyxC GOtW7FbIOVqIm7Lm8Fuyy5UikIU8MMKycXg2KIDUmHaM8WHVlFL0MC8YZITR4RXE mqH9bBzOko6B6oxdg5X5ASSLYtepd1tS1rDtRpsPuEa6xib8eLqMKdxQm7Pj3rjX zcnJxY/6LVg7p8EzCcIv2zVDf2IQxTKNy7b2L2G35Ijc+p4iGh5xQ5x0/8dyEwX+ b43wTMO28Ks5dCKYWfTPpKtU9lzZDUS2k2R4nWnnPssGR00vvbqqsItBAb3Lp955 mQ/HvCL0qp1uIpl+SVoY4y6mHW0o+f+v3S4+2WINpDRAp6f84HKtXqC81oGuGseP TosDv/Yyl22tPxJqA3yjbFcYXFLGsaQ/PoSbIgewJPRcY5qOPCocaWhaU11NyEd1 kWKaywepeKn0WhJCPtMu =WPqK -----END PGP SIGNATURE----- --8w3uRX/HFJGApMzv--