From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 31456 invoked by alias); 13 Dec 2013 19:50:22 -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 31445 invoked by uid 89); 13 Dec 2013 19:50:21 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.5 required=5.0 tests=AWL,BAYES_00,RP_MATCHES_RCVD,SPF_HELO_PASS,SPF_PASS autolearn=ham version=3.3.2 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; Fri, 13 Dec 2013 19:50:21 +0000 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id rBDJoFJP024383 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Fri, 13 Dec 2013 14:50:16 -0500 Received: from [127.0.0.1] (ovpn01.gateway.prod.ext.ams2.redhat.com [10.39.146.11]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id rBDJoCVW025328; Fri, 13 Dec 2013 14:50:12 -0500 Message-ID: <52AB64F3.3010305@redhat.com> Date: Fri, 13 Dec 2013 19:50:00 -0000 From: Pedro Alves User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 MIME-Version: 1.0 To: Markus Metzger CC: jan.kratochvil@redhat.com, gdb-patches@sourceware.org Subject: Re: [patch v8 23/24] record-btrace: show trace from enable location References: <1386839747-8860-1-git-send-email-markus.t.metzger@intel.com> <1386839747-8860-24-git-send-email-markus.t.metzger@intel.com> In-Reply-To: <1386839747-8860-24-git-send-email-markus.t.metzger@intel.com> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-SW-Source: 2013-12/txt/msg00546.txt.bz2 On 12/12/2013 09:15 AM, Markus Metzger wrote: > The btrace record target shows the branch trace from the location of the first > branch destination. This is the first BTS records. > > After adding incremental updates, we can now add a dummy record for the current > PC when we enable tracing so we show the trace from the location where branch > tracing has been enabled. Ah, awesome, I was just wondering about that. :-) I suppose one can we still access the registers when inspecting this dummy location, or are the btrace unwinders preventing that? -- Pedro Alves