From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from list by lists.gnu.org with archive (Exim 4.71) id 1Z0BXh-0001VM-I7 for mharc-grub-devel@gnu.org; Wed, 03 Jun 2015 12:29:25 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:36120) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0BXf-0001Uu-JG for grub-devel@gnu.org; Wed, 03 Jun 2015 12:29:24 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Z0BXc-0000js-86 for grub-devel@gnu.org; Wed, 03 Jun 2015 12:29:23 -0400 Received: from mail-la0-x22b.google.com ([2a00:1450:4010:c03::22b]:34759) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Z0BXc-0000il-0S for grub-devel@gnu.org; Wed, 03 Jun 2015 12:29:20 -0400 Received: by laew7 with SMTP id w7so12501317lae.1 for ; Wed, 03 Jun 2015 09:29:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:subject:message-id:in-reply-to:references :mime-version:content-type:content-transfer-encoding; bh=GmnIkKyWOSHX7W34E85RtksfGdNr6KmtP0Z2RiYp1do=; b=Kv2OZl7L9jGVtmpAlow9rAsqGuhi3RPucqngJrFoamydlB8Un5SbVZbbuY6vr+QHvs ZyCNqkEqUzVIz/9Pr9KDCLvBhX3v2hHuYx+9uplaXh/o2NdfBJWUUQrNvTQNWiDlh2WF uVymaGChSI5/2zINcwk1u2/+bDeIv0jpD0Go4Ce+A08foOwFPFAOwTHUVNVO65bfJ2eM yk96dHxRyIC+TD7rexCOY4tKRMmneLzET11q+q09ADvXRceJaSyrPx00Gu6tYCZZWB52 63o+7pBffjlRt3lEJ05ij50obUmuVRIIeGdfP8xLrP4I8NaDZIQMO1B9J2pSVbZqIZ3Z OXSA== X-Received: by 10.112.119.243 with SMTP id kx19mr21131270lbb.17.1433348958232; Wed, 03 Jun 2015 09:29:18 -0700 (PDT) Received: from opensuse.site (ppp91-76-14-38.pppoe.mtu-net.ru. [91.76.14.38]) by mx.google.com with ESMTPSA id ox10sm5943972lbc.30.2015.06.03.09.29.17 (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 03 Jun 2015 09:29:17 -0700 (PDT) Date: Wed, 3 Jun 2015 19:29:16 +0300 From: Andrei Borzenkov To: Leif Lindholm Subject: Re: arm64 softfloat Message-ID: <20150603192916.3318ceef@opensuse.site> In-Reply-To: <20150603110650.GM8790@bivouac.eciton.net> References: <20150602120917.GI8790@bivouac.eciton.net> <20150602145531.GK8790@bivouac.eciton.net> <556DDBCC.3000500@gmail.com> <20150602195112.5d178bb7@opensuse.site> <20150603110650.GM8790@bivouac.eciton.net> X-Mailer: Claws Mail 3.11.0 (GTK+ 2.24.27; x86_64-suse-linux-gnu) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2a00:1450:4010:c03::22b Cc: The development of GNU GRUB , Vladimir =?UTF-8?B?J8+GLWNvZGVyL3BoY29kZXIn?= Serbinenko X-BeenThere: grub-devel@gnu.org X-Mailman-Version: 2.1.14 Precedence: list Reply-To: The development of GNU GRUB List-Id: The development of GNU GRUB List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Jun 2015 16:29:24 -0000 =D0=92 Wed, 3 Jun 2015 12:06:50 +0100 Leif Lindholm =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > On Tue, Jun 02, 2015 at 07:51:12PM +0300, Andrei Borzenkov wrote: > > > What is the relation of -mgeneral-regs-only with +nofp? The decription > > > of -mgeneral-regs-only in manual is very vague > >=20 > > According to > > http://infocenter.arm.com/help/index.jsp?topic=3D/com.arm.doc.dui0774a/= chr1392305446662.html >=20 > That is ARM's commercial clang-based compiler suite though, not > upstream clang. > =20 > > 1.16 -mgeneral-regs-only > >=20 > > Prevents the use of floating-point instructions or floating-point regis= ters. > > Note > > The -mgeneral-regs-only option is only valid with the aarch64-arm-none-= eabi target. Use -mfpu=3Dnone to prevent the use of floating-point instruct= ions or floating-point registers for the armv8a-arm-none-eabi target. > >=20 > > The description is for armclang; we can just hope that GCC is using the > > same semantic. >=20 > https://gcc.gnu.org/onlinedocs/gcc/AArch64-Options.html > --- > Generate code which uses only the general registers.=20 > --- >=20 Sure, I know this. Unfortunately it does not say how it is related to floating point arithmetic at all. armclang at least makes it explicit. > http://clang.llvm.org/docs/UsersManual.html > --- > Generate code which only uses the general purpose registers. >=20 > This option restricts the generated code to use general registers > only. This only applies to the AArch64 architecture. > --- >=20 > / > Leif >=20 > _______________________________________________ > Grub-devel mailing list > Grub-devel@gnu.org > https://lists.gnu.org/mailman/listinfo/grub-devel