Date: Sun, 7 Jun 2015 18:50:26 +0000 (GMT) From: jenkins-admin@freebsd.org To: bapt@FreeBSD.org, jenkins-admin@FreeBSD.org, freebsd-arm@freebsd.org Subject: FreeBSD_HEAD_arm64 - Build #281 - Fixed Message-ID: <469461061.72.1433703026078.JavaMail.jenkins@jenkins-9.freebsd.org> In-Reply-To: <982690597.70.1433695656700.JavaMail.jenkins@jenkins-9.freebsd.org> References: <982690597.70.1433695656700.JavaMail.jenkins@jenkins-9.freebsd.org>
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FreeBSD_HEAD_arm64 - Build #281 - Fixed: Check console output at https://jenkins.freebsd.org/job/FreeBSD_HEAD_arm64/281/ to view the results. From owner-freebsd-arm@FreeBSD.ORG Sun Jun 7 21:53:04 2015 Return-Path: <owner-freebsd-arm@FreeBSD.ORG> Delivered-To: freebsd-arm@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id B9941C92 for <freebsd-arm@freebsd.org>; Sun, 7 Jun 2015 21:53:04 +0000 (UTC) (envelope-from andrew@fubar.geek.nz) Received: from kif.fubar.geek.nz (kif.fubar.geek.nz [178.62.119.249]) by mx1.freebsd.org (Postfix) with ESMTP id 859B310D4 for <freebsd-arm@freebsd.org>; Sun, 7 Jun 2015 21:53:04 +0000 (UTC) (envelope-from andrew@fubar.geek.nz) Received: from bender.Home (97e07b11.skybroadband.com [151.224.123.17]) by kif.fubar.geek.nz (Postfix) with ESMTPSA id C5503D7901; Sun, 7 Jun 2015 21:53:02 +0000 (UTC) Date: Sun, 7 Jun 2015 22:52:52 +0100 From: Andrew Turner <andrew@fubar.geek.nz> To: Peter Jeremy <peter@rulingia.com> Cc: freebsd-arm@freebsd.org Subject: Re: Denormalised numbers on arm Message-ID: <20150607225252.14a47e0c@bender.Home> In-Reply-To: <20150607004314.GA96727@server.rulingia.com> References: <20150607004314.GA96727@server.rulingia.com> X-Mailer: Claws Mail 3.11.1 (GTK+ 2.24.27; amd64-portbld-freebsd10.0) MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; boundary="Sig_/4ygjMKK9=euFsGH1506D+=C"; protocol="application/pgp-signature" X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: "Porting FreeBSD to ARM processors." <freebsd-arm.freebsd.org> List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-arm>, <mailto:freebsd-arm-request@freebsd.org?subject=unsubscribe> List-Archive: <http://lists.freebsd.org/pipermail/freebsd-arm/>; List-Post: <mailto:freebsd-arm@freebsd.org> List-Help: <mailto:freebsd-arm-request@freebsd.org?subject=help> List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-arm>, <mailto:freebsd-arm-request@freebsd.org?subject=subscribe> X-List-Received-Date: Sun, 07 Jun 2015 21:53:04 -0000 --Sig_/4ygjMKK9=euFsGH1506D+=C Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable On Sun, 7 Jun 2015 10:43:14 +1000 Peter Jeremy <peter@rulingia.com> wrote: > I've been tracking down the cause of some test failures on my RPi > (running armv6hf head r283107) and found that denormalised numbers are > flushed to zero. This appears deliberate (r263913 initialised the > fpscr so denormalised numbers are flushed to zero) but isn't what is > expected from IEEE FP arithmetic. The commit doesn't include any > explanation for setting this (mis)behaviour. >=20 > Can someone explain why Arm defaults to flush-to-zero? Not all VFP units support subnormal inputs. Because of this we would need to add code to the kernel to support these. As we don't have this code I disabled them. Andrew --Sig_/4ygjMKK9=euFsGH1506D+=C Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iQEcBAEBCAAGBQJVdL01AAoJEKoW77gxsxYU3JEIALdLo+TkJWXbXEbAU5in8lTt q7IBz4r0yAYsPcMWoG4bXKa2RybzDm4KWLESX41/lG/1xb3JYTlWbMFs4OOrltAT 17V/4zg4yjRSOZ3I5F5Up7n1SQbG/ojEacJUiood1cC45z6bHZMDv5ow3tFpgoqd 5y6v9uj4BGkF79lLBKm8SAkoQNgTI2V2anGnWH+eQeMZjf6ysnoSupno4MwtD/Op 4prmWqZ3L2qK6KZ6XoOhHiEY5eFOEmd+gTAWLaJpav6bZBvQDK54dNWqGaKeN//5 v7W9mKRDmT8d/4NdtCJ6Qqre5Ruum8lHrr67XuJUFn2RHSr5D5PhUEVis0dWGro= =AlNW -----END PGP SIGNATURE----- --Sig_/4ygjMKK9=euFsGH1506D+=C--
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