From patchwork Fri Jul 20 13:41:11 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hans-Peter Nilsson X-Patchwork-Id: 172279 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Received: from sourceware.org (server1.sourceware.org [209.132.180.131]) by ozlabs.org (Postfix) with SMTP id 8D46C2C0392 for ; Fri, 20 Jul 2012 23:41:36 +1000 (EST) Comment: DKIM? See http://www.dkim.org DKIM-Signature: v=1; a=rsa-sha1; c=relaxed/relaxed; d=gcc.gnu.org; s=default; x=1343396496; h=Comment: DomainKey-Signature:Received:Received:Received:Received:Received: Received:Received:Received:Received:Date:Message-Id:From:To:CC: In-reply-to:Subject:MIME-Version:Content-Type: Content-Transfer-Encoding:Mailing-List:Precedence:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:Sender: Delivered-To; bh=uUkeQrv12cUjQliUlUd2Ke26/dc=; b=d5V3HjcaebHrVs7 w4uJ6Lrrc1Fp3C/MJyN9XY8TTy24P724SZlJD3ZrH5K/z4HFuJiFpVpbur8CEp+g hD0JgyrqDsbhSyczCF24ml8kwq6wFqJ+jjvjQz4/+VFNzepkyJsKPShPysgEGoen z4DfFcEyp4e+64bqf+FDROlmcCg0= Comment: DomainKeys? See http://antispam.yahoo.com/domainkeys DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=default; d=gcc.gnu.org; h=Received:Received:X-SWARE-Spam-Status:X-Spam-Check-By:Received:Received:Received:Received:Received:Received:Received:Date:Message-Id:From:To:CC:In-reply-to:Subject:MIME-Version:Content-Type:Content-Transfer-Encoding:Mailing-List:Precedence:List-Id:List-Unsubscribe:List-Archive:List-Post:List-Help:Sender:Delivered-To; b=LYLVbVpbKfK41/EqxMI5fOLNNjXK0aVMmVipt6B9jlf2ZNAB2WaLXjePGrmHdK Qx+rZ0Q1efi7mOKM5vP1JKmKtPpXM20iLphe6d/SOlnVKUgWqeLAFS4ObzNw/2dX 5SdcXiosbr6VCnzFjyho1Tl3ZhW/AzNXzXrKiQhwiFCB8=; Received: (qmail 5089 invoked by alias); 20 Jul 2012 13:41:31 -0000 Received: (qmail 5080 invoked by uid 22791); 20 Jul 2012 13:41:30 -0000 X-SWARE-Spam-Status: No, hits=-2.9 required=5.0 tests=AWL, BAYES_00, KHOP_THREADED, RCVD_IN_HOSTKARMA_NO, T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from anubis.se.axis.com (HELO anubis.se.axis.com) (195.60.68.12) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 20 Jul 2012 13:41:15 +0000 Received: from localhost (localhost [127.0.0.1]) by anubis.se.axis.com (Postfix) with ESMTP id 1374219DF3; Fri, 20 Jul 2012 15:41:13 +0200 (CEST) Received: from anubis.se.axis.com ([127.0.0.1]) by localhost (anubis.se.axis.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id f7KPzfkGFxyn; Fri, 20 Jul 2012 15:41:12 +0200 (CEST) Received: from seth.se.axis.com (seth.se.axis.com [10.0.2.172]) by anubis.se.axis.com (Postfix) with ESMTP id 0139B19DDD; Fri, 20 Jul 2012 15:41:11 +0200 (CEST) Received: from ignucius.se.axis.com (ignucius.se.axis.com [10.88.21.50]) by seth.se.axis.com (Postfix) with ESMTP id E4AB43E0BE; Fri, 20 Jul 2012 15:41:11 +0200 (CEST) Received: from ignucius.se.axis.com (localhost [127.0.0.1]) by ignucius.se.axis.com (8.12.8p1/8.12.8/Debian-2woody1) with ESMTP id q6KDfBd0014178; Fri, 20 Jul 2012 15:41:11 +0200 Received: (from hp@localhost) by ignucius.se.axis.com (8.12.8p1/8.12.8/Debian-2woody1) id q6KDfB3J014174; Fri, 20 Jul 2012 15:41:11 +0200 Date: Fri, 20 Jul 2012 15:41:11 +0200 Message-Id: <201207201341.q6KDfB3J014174@ignucius.se.axis.com> From: Hans-Peter Nilsson To: nickc@redhat.com CC: gcc-patches@gcc.gnu.org In-reply-to: <5009065C.9090903@redhat.com> (message from nick clifton on Fri, 20 Jul 2012 09:18:52 +0200) Subject: Re: Commit: ARM: Document -munaligned-access MIME-Version: 1.0 Mailing-List: contact gcc-patches-help@gcc.gnu.org; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Archive: List-Post: List-Help: Sender: gcc-patches-owner@gcc.gnu.org Delivered-To: mailing list gcc-patches@gcc.gnu.org > From: nick clifton > Date: Fri, 20 Jul 2012 09:18:52 +0200 > "approved - please apply". Thanks! I see the last sentence could do with better punctuation, so I added the obvious comma. Installed as follows. brgds, H-P Index: changes.html =================================================================== RCS file: /cvs/gcc/wwwdocs/htdocs/gcc-4.7/changes.html,v retrieving revision 1.121 diff -p -u -r1.121 changes.html --- changes.html 15 Jul 2012 15:04:38 -0000 1.121 +++ changes.html 20 Jul 2012 13:35:48 -0000 @@ -43,6 +43,19 @@ +
  • On ARM, when compiling for ARMv6 (but not ARMv6-M), ARMv7-A, + ARMv7-R, or ARMv7-M, the new option + -munaligned-access is active by default, which for + some source codes generates code that accesses memory on unaligned + adresses. This will require the kernel of those systems to enable + such accesses (controlled by CP15 register c1, refer + to ARM documentation). Alternatively or for compatibility with + kernels where unaligned accesses are not supported, all code has + to be compiled with -mno-unaligned-access. + Linux/ARM in official releases has automatically and + unconditionally supported unaligned accesses as emitted by GCC due + to this option being active, since Linux version 2.6.28.
    • +
  • Support on ARM for the legacy floating-point accelerator (FPA) and the mixed-endian floating-point format that it used has been obsoleted. The ports that still use this format have been obsoleted as well.