From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 13785 invoked by alias); 24 Feb 2005 21:56:16 -0000 Mailing-List: contact binutils-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: binutils-owner@sources.redhat.com Received: (qmail 13751 invoked from network); 24 Feb 2005 21:56:10 -0000 Received: from unknown (HELO MMS2.broadcom.com) (63.70.210.58) by sourceware.org with SMTP; 24 Feb 2005 21:56:10 -0000 Received: from 63.70.210.1 by MMS2.broadcom.com with SMTP (Broadcom SMTP Relay (Email Firewall v6.1.0)); Thu, 24 Feb 2005 13:56:14 -0800 X-Server-Uuid: 1F20ACF3-9CAF-44F7-AB47-F294E2D5B4EA Received: from mail-irva-8.broadcom.com ([10.10.64.221]) by mail-irva-1.broadcom.com (Post.Office MTA v3.5.3 release 223 ID# 0-72233U7200L2200S0V35) with ESMTP id com; Thu, 24 Feb 2005 13:55:52 -0800 Received: from mon-irva-10.broadcom.com (mon-irva-10.broadcom.com [10.10.64.171]) by mail-irva-8.broadcom.com (MOS 3.5.6-GR) with ESMTP id AMJ20495; Thu, 24 Feb 2005 13:55:49 -0800 (PST) Received: from mail-sj1-5.sj.broadcom.com (mail-sj1-5.sj.broadcom.com [10.16.128.236]) by mon-irva-10.broadcom.com (8.9.1/8.9.1) with ESMTP id NAA26827; Thu, 24 Feb 2005 13:55:48 -0800 (PST) Received: from xl-sj1-01.sj.broadcom.com (xl-sj1-01 [10.16.129.245]) by mail-sj1-5.sj.broadcom.com (8.12.9/8.12.9/SSF) with ESMTP id j1OLtmov014550; Thu, 24 Feb 2005 13:55:48 -0800 (PST) Received: (from cgd@localhost) by xl-sj1-01.sj.broadcom.com ( 8.11.6/8.9.3) id j1OLtmX12676; Thu, 24 Feb 2005 13:55:48 -0800 X-Authentication-Warning: xl-sj1-01.sj.broadcom.com: cgd set sender to cgd@broadcom.com using -f To: rsandifo@redhat.com cc: "Maciej W. Rozycki" , binutils@sources.redhat.com Subject: Re: [patch] MIPS: Fix synthesized doubleword transfers (ping) References: <87sm3lhdo1.fsf@firetop.home> From: cgd@broadcom.com Date: Thu, 24 Feb 2005 23:42:00 -0000 In-Reply-To: Message-ID: User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 MIME-Version: 1.0 X-WSS-ID: 6E0092F42I89621217-01-01 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-SW-Source: 2005-02/txt/msg00623.txt.bz2 At Thu, 24 Feb 2005 21:05:49 +0000 (UTC), "Richard Sandiford" wrote: > I suppose bad things could happen if you composed an aligned > address from an unaligned symbol and an unaligned offset, > but is that allowed? yes, at least as far as the ISA is concerned. Also, it's perfectly well defined -- if a little bit strange (and remarkably slow, since you take an exception 8-) -- to do these accesses to odd addresses. chris