From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 55451 invoked by alias); 31 Aug 2016 10:42:47 -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 55424 invoked by uid 89); 31 Aug 2016 10:42:44 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-3.4 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy=ILP32, AARCH64, HTo:D*cavium.com, sends X-Spam-User: qpsmtpd, 2 recipients 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 ESMTP; Wed, 31 Aug 2016 10:42:43 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (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 554FF80F6C; Wed, 31 Aug 2016 10:42:42 +0000 (UTC) Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u7VAgefP005070; Wed, 31 Aug 2016 06:42:41 -0400 Subject: Re: [PATCH 3/3] Handle ILP32 AARCH64 correctly for gdbserver To: Andrew Pinski , gdb-patches@sourceware.org, binutils@sourceware.org References: <1472516750-30743-1-git-send-email-apinski@cavium.com> <1472516750-30743-4-git-send-email-apinski@cavium.com> From: Pedro Alves Message-ID: Date: Wed, 31 Aug 2016 10:42:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <1472516750-30743-4-git-send-email-apinski@cavium.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-SW-Source: 2016-08/txt/msg00308.txt.bz2 On 08/30/2016 01:25 AM, Andrew Pinski wrote: > In gdbserver, we need to send over 32bit registers > for pc/sp instead of 64bit as we do right now. > So we need another XML file for ILP32. Why do we need to do that? The raw, architecture register is still 64-bit, right? Sounds to me that if you want to present a 32-bit pc to the user, then gdb should handle this, via a pseudo register, similarly to how x32 sends 64-bit rip, and then gdb shows a 32-bit pc. Mips does something like this too, to a larger extent, see mips_register_name. > > Tested using gdbserver with an ILP32 program and even > tested using gdbserver as an ILP32 program. > Thanks, Pedro Alves