From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 1310 invoked by alias); 30 Jun 2016 08:13:45 -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 1281 invoked by uid 89); 30 Jun 2016 08:13:44 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.2 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=HX-Greylist:Thu X-HELO: mx1.redhat.com Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES256-GCM-SHA384 encrypted) ESMTPS; Thu, 30 Jun 2016 08:13:43 +0000 Received: from int-mx13.intmail.prod.int.phx2.redhat.com (int-mx13.intmail.prod.int.phx2.redhat.com [10.5.11.26]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 69F1A811A2; Thu, 30 Jun 2016 08:13:42 +0000 (UTC) Received: from localhost.localdomain (vpn1-5-107.ams2.redhat.com [10.36.5.107]) by int-mx13.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u5U8DeYs005329 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 30 Jun 2016 04:13:41 -0400 Subject: Re: [PATCH] aarch64 sim big-endian support To: Jim Wilson References: Cc: gdb-patches@sourceware.org From: Nick Clifton Message-ID: Date: Thu, 30 Jun 2016 08:13:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.1.1 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-SW-Source: 2016-06/txt/msg00530.txt.bz2 Hi Jim, > The problem is with the > GRegisterValue untion. You have > typedef union GRegisterValue > { > int8_t s8; > ... > int64_t s64; > } GRegister; > On a little-endian host, the s8 member will match the low-byte of the > s64 member, which is what we want. However, on a big-endian host, the > s8 member will match the high-byte of the u64 member, and the > simulator fails. Ah, yes. I had not considered this. > Fixing the problem this way means that we require either an ISO C 2011 > compiler, or a compiler that supports GCC extensions to ISO C 1990 or > 1999. I have no problems with this requirement. I have now checked in your patch (to save time). Thanks very much for persuing this matter. Cheers Nick