From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 123899 invoked by alias); 12 Jan 2016 10:25:29 -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 123887 invoked by uid 89); 12 Jan 2016 10:25:28 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS autolearn=ham version=3.3.2 spammy= 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; Tue, 12 Jan 2016 10:25:28 +0000 Received: from int-mx10.intmail.prod.int.phx2.redhat.com (int-mx10.intmail.prod.int.phx2.redhat.com [10.5.11.23]) by mx1.redhat.com (Postfix) with ESMTPS id DD182C001267; Tue, 12 Jan 2016 10:25:26 +0000 (UTC) Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u0CAPPs6018588; Tue, 12 Jan 2016 05:25:26 -0500 Message-ID: <5694D495.10305@redhat.com> Date: Tue, 12 Jan 2016 10:25:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.7.0 MIME-Version: 1.0 To: Steve Ellcey , gdb-patches@sourceware.org Subject: Re: MIPS simulator is broken References: <5f31ca78-325c-4c18-9abf-16de50bac964@BAMAIL02.ba.imgtec.org> <20160112010025.GE4894@vapier.lan> In-Reply-To: <20160112010025.GE4894@vapier.lan> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-SW-Source: 2016-01/txt/msg00209.txt.bz2 On 01/12/2016 01:00 AM, Mike Frysinger wrote: > and indeed, the mips bfds (for whatever reason) do: > elf32-mips.c:#define elf_backend_sign_extend_vma TRUE > elf64-mips.c:#define elf_backend_sign_extend_vma TRUE > elfn32-mips.c:#define elf_backend_sign_extend_vma TRUE > > i don't know why mips wants to do this, and considering literally no > other target does it (ok, sh64 does it, but let's ignore them since > that target is dead & being removed), it's probably not an accident. > so we have to hack around it in the sim: AFAIK, that's just how the machine works: https://sourceware.org/ml/binutils/2002-09/msg00135.html Thanks, Pedro Alves