Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755876AbXJIVly (ORCPT ); Tue, 9 Oct 2007 17:41:54 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754711AbXJIVlo (ORCPT ); Tue, 9 Oct 2007 17:41:44 -0400 Received: from gw.goop.org ([64.81.55.164]:34707 "EHLO mail.goop.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754042AbXJIVln (ORCPT ); Tue, 9 Oct 2007 17:41:43 -0400 Message-ID: <470BF566.6010204@goop.org> Date: Tue, 09 Oct 2007 14:40:54 -0700 From: Jeremy Fitzhardinge User-Agent: Thunderbird 2.0.0.5 (X11/20070727) MIME-Version: 1.0 To: Krzysztof Halasa CC: Timur Tabi , Lennart Sorensen , Anton Altaparmakov , Jan Engelhardt , Linux Kernel Mailing List Subject: Re: __LITTLE_ENDIAN vs. __LITTLE_ENDIAN_BITFIELD References: <4706822D.4070509@freescale.com> <470691EB.7020209@freescale.com> <4706A842.9030507@freescale.com> <20071009174623.GC4003@csclub.uwaterloo.ca> <470BC0D5.70305@freescale.com> <470BD266.8020302@goop.org> In-Reply-To: X-Enigmail-Version: 0.95.3 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 752 Lines: 19 Krzysztof Halasa wrote: > Some pointer maybe? > Erm, a bit of googling will turn one up, but the gist is that IBM has traditionally bit 0 for MSB and x for LSB. It's a pain to work with: for one, bits in the same place in a word (say, control register) are renumbered in 32 vs 64. And I've worked on at least one piece of hardware in which the hardware designer had a brain-fart and first board had bit 0 on the CPU wired to bit 0 on the northbridge - should have been 31 -> 0, 30 -> 1, etc... J - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/