From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 12614 invoked by alias); 9 Sep 2013 07:49:57 -0000 Mailing-List: contact gdb-patches-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sourceware.org Received: (qmail 12600 invoked by uid 89); 9 Sep 2013 07:49:56 -0000 Received: from relay1.mentorg.com (HELO relay1.mentorg.com) (192.94.38.131) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 09 Sep 2013 07:49:56 +0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=0.7 required=5.0 tests=AWL,BAYES_00,GARBLED_BODY,KHOP_THREADED,RDNS_NONE,SPF_HELO_FAIL autolearn=no version=3.3.2 X-HELO: relay1.mentorg.com Received: from svr-orw-fem-01.mgc.mentorg.com ([147.34.98.93]) by relay1.mentorg.com with esmtp id 1VIwEJ-0007aP-LJ from Yao_Qi@mentor.com ; Mon, 09 Sep 2013 00:49:51 -0700 Received: from SVR-ORW-FEM-03.mgc.mentorg.com ([147.34.97.39]) by svr-orw-fem-01.mgc.mentorg.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.4675); Mon, 9 Sep 2013 00:49:51 -0700 Received: from qiyao.dyndns.org (147.34.91.1) by svr-orw-fem-03.mgc.mentorg.com (147.34.97.39) with Microsoft SMTP Server id 14.2.247.3; Mon, 9 Sep 2013 00:49:50 -0700 Message-ID: <522D7D6A.6050308@codesourcery.com> Date: Mon, 09 Sep 2013 07:49:00 -0000 From: Yao Qi User-Agent: Mozilla/5.0 (X11; Linux i686; rv:17.0) Gecko/20130110 Thunderbird/17.0.2 MIME-Version: 1.0 To: Eli Zaretskii CC: Subject: Re: [PATCH 4/7] Trust readonly sections if target has memory protection References: <1378432920-7731-1-git-send-email-yao@codesourcery.com> <1378641807-24256-1-git-send-email-yao@codesourcery.com> <1378641807-24256-5-git-send-email-yao@codesourcery.com> <831u4zl52v.fsf@gnu.org> In-Reply-To: <831u4zl52v.fsf@gnu.org> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 8bit X-IsSubscribed: yes X-SW-Source: 2013-09/txt/msg00271.txt.bz2 On 09/08/2013 11:13 PM, Eli Zaretskii wrote: > Do most of our supported targets have or don't have memory protection? > How about most native targets? Nearly all targets with OS have memory protection, but bare-metal targets don't. > > If a large subset of targets have the protection, it might make more > sense to say YES by default, not NO. If the default is YES, in ${arch}-tdep.c, we should set it to NO, and set it back to YES in ${arch}-${os}-tdep.c. More changes are involved. Since the number of supported architectures is greater than the number of supported operating systems, we'll do less changes if the default is NO. Only have to set it to YES for supported operating systems. -- Yao (齐尧)