From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 8166 invoked by alias); 10 Mar 2010 17:05:18 -0000 Received: (qmail 7983 invoked by uid 22791); 10 Mar 2010 17:05:16 -0000 X-SWARE-Spam-Status: No, hits=-7.2 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS 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; Wed, 10 Mar 2010 17:05:12 +0000 Received: from int-mx02.intmail.prod.int.phx2.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) by mx1.redhat.com (8.13.8/8.13.8) with ESMTP id o2AH55Rn015423 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Wed, 10 Mar 2010 12:05:06 -0500 Received: from ns3.rdu.redhat.com (ns3.rdu.redhat.com [10.11.255.199]) by int-mx02.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id o2AH54vV002412; Wed, 10 Mar 2010 12:05:05 -0500 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 o2AH53mB012601; Wed, 10 Mar 2010 12:05:04 -0500 Received: by opsy.redhat.com (Postfix, from userid 500) id 50E8C378267; Wed, 10 Mar 2010 10:05:03 -0700 (MST) From: Tom Tromey To: Chris Johns Cc: gdb@sourceware.org Subject: Re: Reading a static variable in Python References: <4B971421.8080006@contemporary.net.au> Reply-To: tromey@redhat.com Date: Wed, 10 Mar 2010 17:05:00 -0000 In-Reply-To: <4B971421.8080006@contemporary.net.au> (Chris Johns's message of "Wed, 10 Mar 2010 14:38:09 +1100") Message-ID: User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Mailing-List: contact gdb-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sourceware.org X-SW-Source: 2010-03/txt/msg00067.txt.bz2 >>>>> "Chris" == Chris Johns writes: Chris> I am adding pretty printers for RTEMS to gdb. In the RTEMS operating Chris> system elements such as a semaphore are given an id. I would like to Chris> print the actual semaphore data given a semaphore id. To do this I Chris> need to read a kernel structure from a table indexed via a bit field Chris> in the id. As an example the semaphore's table is declared in RTEMS Chris> as: Chris> RTEMS_SEM_EXTERN Objects_Information _Semaphore_Information; This isn't really enough information for us to help you. What does Objects_Information look like? Chris> I am stuck on how to create a new gdb.Value variable in Python. Use gdb.parse_and_eval. This wasn't added until after 7.0. Tom