From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7642 invoked by alias); 10 May 2011 16:39:56 -0000 Received: (qmail 7501 invoked by uid 22791); 10 May 2011 16:39:55 -0000 X-SWARE-Spam-Status: No, hits=-6.9 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Received: from mx1.redhat.com (HELO mx1.redhat.com) (209.132.183.28) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Tue, 10 May 2011 16:39:37 +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 (8.14.4/8.14.4) with ESMTP id p4AGdZpO023875 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Tue, 10 May 2011 12:39:35 -0400 Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) by int-mx10.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id p4AGdZLf031293; Tue, 10 May 2011 12:39:35 -0400 Received: from opsy.redhat.com (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by ns3.rdu.redhat.com (8.13.8/8.13.8) with ESMTP id p4AGdY9t018274; Tue, 10 May 2011 12:39:34 -0400 Received: by opsy.redhat.com (Postfix, from userid 500) id 05A4C378497; Tue, 10 May 2011 10:39:33 -0600 (MDT) From: Tom Tromey To: "Ulrich Weigand" Cc: gdb-patches@sourceware.org Subject: Re: RFC: implement typed DWARF stack References: <201105092202.p49M2anm000447@d06av02.portsmouth.uk.ibm.com> Date: Tue, 10 May 2011 16:39:00 -0000 In-Reply-To: <201105092202.p49M2anm000447@d06av02.portsmouth.uk.ibm.com> (Ulrich Weigand's message of "Tue, 10 May 2011 00:02:35 +0200 (CEST)") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii 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 X-SW-Source: 2011-05/txt/msg00249.txt.bz2 >>>>> "Ulrich" == Ulrich Weigand writes: Ulrich> I ran a test on Cell, and interestingly it turns out that while Ulrich> Cell mixed-architecture debugging appears to be OK, just plain Ulrich> ppc32 debugging on a ppc64 host is now broken. When the Ulrich> (32-bit) address of a stack variable has its high bit set, Ulrich> dwarf2_evaluate_loc_desc_full now returns a value with a Ulrich> sign-extended 64-bit CORE_ADDR address (0xffffffff....). This Ulrich> address later on causes a memory_error when accessed. Can you send me your test case? I have a PPC64 gdb now; I built one on gcc40, on the GCC compile farm. Tom