From mboxrd@z Thu Jan 1 00:00:00 1970 Received: with ECARTIS (v1.0.0; list linux-mips); Tue, 26 Oct 2010 19:19:50 +0200 (CEST) Received: from mail3.caviumnetworks.com ([12.108.191.235]:14293 "EHLO mail3.caviumnetworks.com" rhost-flags-OK-OK-OK-OK) by eddie.linux-mips.org with ESMTP id S1491127Ab0JZRTr (ORCPT ); Tue, 26 Oct 2010 19:19:47 +0200 Received: from caexch01.caveonetworks.com (Not Verified[192.168.16.9]) by mail3.caviumnetworks.com with MailMarshal (v6,7,2,8378) id ; Tue, 26 Oct 2010 10:20:19 -0700 Received: from caexch01.caveonetworks.com ([192.168.16.9]) by caexch01.caveonetworks.com with Microsoft SMTPSVC(6.0.3790.4675); Tue, 26 Oct 2010 10:20:09 -0700 Received: from dd1.caveonetworks.com ([12.108.191.236]) by caexch01.caveonetworks.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.4675); Tue, 26 Oct 2010 10:20:09 -0700 Message-ID: <4CC70DA9.6000906@caviumnetworks.com> Date: Tue, 26 Oct 2010 10:19:37 -0700 From: David Daney User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.12) Gecko/20100907 Fedora/3.0.7-1.fc12 Thunderbird/3.0.7 MIME-Version: 1.0 To: "Maciej W. Rozycki" CC: Camm Maguire , debian-mips@lists.debian.org, Frederick Isaac , gcl-devel@gnu.org, linux-mips Subject: Re: gdb for mips64 References: <4C93993E.7030008@caviumnetworks.com> <8762y49k1k.fsf@maguirefamily.org> <4C93D86D.5090201@caviumnetworks.com> <87fwx4dwu5.fsf@maguirefamily.org> <4C97D9A1.7050102@caviumnetworks.com> <87lj6te9t1.fsf@maguirefamily.org> <4C9A8BC9.1020605@caviumnetworks.com> <4C9A9699.6080908@caviumnetworks.com> <87pqvbs7oa.fsf@maguirefamily.org> <4CB88D2C.8020900@caviumnetworks.com> <87r5fksxby.fsf_-_@maguirefamily.org> <4CBF1B1E.6050804@caviumnetworks.com> <8762wwlfen.fsf@maguirefamily.org> <4CC06826.2070508@caviumnetworks.com> <4CC0787C.2040902@caviumnetworks.com> <878w1m3qmn.fsf_-_@maguirefamily.org> <4CC5FA72.6080005@caviumnetworks.com> In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 26 Oct 2010 17:20:09.0786 (UTC) FILETIME=[0AA919A0:01CB7532] Return-Path: X-Envelope-To: <"|/home/ecartis/ecartis -s linux-mips"> (uid 0) X-Orcpt: rfc822;linux-mips@linux-mips.org Original-Recipient: rfc822;linux-mips@linux-mips.org X-archive-position: 28245 X-ecartis-version: Ecartis v1.0.0 Sender: linux-mips-bounce@linux-mips.org Errors-to: linux-mips-bounce@linux-mips.org X-original-sender: ddaney@caviumnetworks.com Precedence: bulk X-list: linux-mips On 10/26/2010 05:47 AM, Maciej W. Rozycki wrote: > On Mon, 25 Oct 2010, David Daney wrote: > >> I don't think a 32-bit gdb can debug 64-bit processes :-(. > > And it should (assuming ptrace(2) gets things right) -- if what you say > is true, then it's a bug rather than a deliberate design decision. To add > some irony, MIPS GDB is always 64-bit internally. > >>> (gdb) r >>> Starting program: /home/camm/gcl-2.6.8pre/unixport/saved_pre_gcl >>> /home/wingsun/develop/build/gdb/gdb-6.8/gdb/mips-tdep.c:603: internal-error: >>> bad register size >>> A problem internal to GDB has been detected, >>> further debugging may prove unreliable. > > Try a newer version though -- GDB 7.2 has been out for a (short) while > now. You're missing 2.5 years of development. If still unsuccessful with > a pristine release from ftp.gnu.org, then file a bug report at > http://sourceware.org/gdb/bugs/. > After more though, I think you may have to configure with --enable-64-bit-bfd for a 32-bit gdb to work on 64-bit processes. Although I have not actually tested that. In the past, I have just built a native 64-bit gdb. David Daney