From owner-freebsd-arch@FreeBSD.ORG Fri Oct 5 05:15:18 2012 Return-Path: Delivered-To: freebsd-arch@FreeBSD.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 77A3B1065670 for ; Fri, 5 Oct 2012 05:15:18 +0000 (UTC) (envelope-from avg@FreeBSD.org) Received: from citadel.icyb.net.ua (citadel.icyb.net.ua [212.40.38.140]) by mx1.freebsd.org (Postfix) with ESMTP id 869A48FC08 for ; Fri, 5 Oct 2012 05:15:17 +0000 (UTC) Received: from porto.starpoint.kiev.ua (porto-e.starpoint.kiev.ua [212.40.38.100]) by citadel.icyb.net.ua (8.8.8p3/ICyb-2.3exp) with ESMTP id IAA26090; Fri, 05 Oct 2012 08:15:08 +0300 (EEST) (envelope-from avg@FreeBSD.org) Received: from localhost ([127.0.0.1]) by porto.starpoint.kiev.ua with esmtp (Exim 4.34 (FreeBSD)) id 1TK0Ff-000OcS-NX; Fri, 05 Oct 2012 08:15:07 +0300 Message-ID: <506E6CDA.4080507@FreeBSD.org> Date: Fri, 05 Oct 2012 08:15:06 +0300 From: Andriy Gapon User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:15.0) Gecko/20120913 Thunderbird/15.0.1 MIME-Version: 1.0 To: Dimitry Andric References: <506C385C.3020400@FreeBSD.org> <506DEB4C.5020508@andric.com> In-Reply-To: <506DEB4C.5020508@andric.com> X-Enigmail-Version: 1.4.3 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: freebsd-arch@FreeBSD.org Subject: Re: x86 boot code build X-BeenThere: freebsd-arch@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussion related to FreeBSD architecture List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 05 Oct 2012 05:15:18 -0000 on 04/10/2012 23:02 Dimitry Andric said the following: > Well, do we still officially support any real i386 machines? If so, we > should still use -march=i386 for the boot code. Otherwise, let's start > using -march=i486 explicitly. As I mentioned earlier, the only difference for boot code is use of 'leave' instruction. I don't think -march=i486 buys us much, if anything, except for "coolness factor" (i486 is "cooler" than i386). On the other hand it makes binaries larger. So... -- Andriy Gapon