From owner-freebsd-sparc64@freebsd.org Wed Nov 11 21:53:41 2015 Return-Path: Delivered-To: freebsd-sparc64@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 BFB4AA2C7E6 for ; Wed, 11 Nov 2015 21:53:41 +0000 (UTC) (envelope-from nwhitehorn@freebsd.org) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id A32A2135B for ; Wed, 11 Nov 2015 21:53:41 +0000 (UTC) (envelope-from nwhitehorn@freebsd.org) Received: by mailman.ysv.freebsd.org (Postfix) id 9E252A2C7E2; Wed, 11 Nov 2015 21:53:41 +0000 (UTC) Delivered-To: sparc64@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 9C7F9A2C7E1; Wed, 11 Nov 2015 21:53:41 +0000 (UTC) (envelope-from nwhitehorn@freebsd.org) Received: from c.mail.sonic.net (c.mail.sonic.net [64.142.111.80]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 84E36135A; Wed, 11 Nov 2015 21:53:41 +0000 (UTC) (envelope-from nwhitehorn@freebsd.org) Received: from aurora.physics.berkeley.edu (aurora.physics.berkeley.edu [128.32.117.67]) (authenticated bits=0) by c.mail.sonic.net (8.15.1/8.15.1) with ESMTPSA id tABLrXRP009005 (version=TLSv1.2 cipher=DHE-RSA-AES128-SHA bits=128 verify=NOT); Wed, 11 Nov 2015 13:53:34 -0800 Subject: Re: Sparc64 doesn't care about you, and you shouldn't care about Sparc64 To: Peter Jeremy , Jordan Hubbard References: <563A5893.1030607@freebsd.org> <2AAC0EF3-528B-476F-BA9C-CDC3004465D0@bsdimp.com> <20151108155501.GA1901@alchemy.franken.de> <563F8385.3090603@freebsd.org> <56417100.5050600@Wilcox-Tech.com> <39947478-4710-47D8-BAB1-FC93979570B6@mail.turbofuzz.com> <20151111084432.GC67251@server.rulingia.com> Cc: freebsd-arch , sparc64@freebsd.org From: Nathan Whitehorn Message-ID: <5643B8DD.9060006@freebsd.org> Date: Wed, 11 Nov 2015 13:53:33 -0800 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:38.0) Gecko/20100101 Thunderbird/38.3.0 MIME-Version: 1.0 In-Reply-To: <20151111084432.GC67251@server.rulingia.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit X-Sonic-CAuth: UmFuZG9tSVZL+OFW00lKcfPzr49z89OjkjD/onNYVQIW/ySzc/mNVnl6xl2zT0xgOIY+kR8jcExqfClbMF6ftVu9axwXb4o55P/qZoqdCDI= X-Sonic-ID: C;XKxnp76I5RGUNL0U9jFv0A== M;SOO8p76I5RGUNL0U9jFv0A== X-Spam-Flag: No X-Sonic-Spam-Details: 0.0/5.0 by cerberusd X-BeenThere: freebsd-sparc64@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Porting FreeBSD to the Sparc List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Nov 2015 21:53:41 -0000 We currently only support big-endian on PowerPC (32 and 64-bit). We might support little-endian PowerPC at some point -- Linux is moving in that direction -- but I'm not sure we have the userbase to warrant it. -Nathan On 11/11/15 00:44, Peter Jeremy wrote: > On 2015-Nov-10 22:55:38 -0800, Jordan Hubbard wrote: >> Again, what’s the long-term goal of supporting this architecture? > The things that sparc64 give us that x86 doesn't are big-endian and > strict alignment. In theory, MIPS, PPC and ARM can give us both of > those but I'm non sure whether we actually have any big-endian > variants of them. >