From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 26439 invoked by alias); 18 Sep 2013 09:52:51 -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 26430 invoked by uid 89); 18 Sep 2013 09:52:51 -0000 Received: from mga03.intel.com (HELO mga03.intel.com) (143.182.124.21) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Wed, 18 Sep 2013 09:52:51 +0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.6 required=5.0 tests=AWL,BAYES_50,KHOP_THREADED,RDNS_NONE,SPF_SOFTFAIL autolearn=no version=3.3.2 X-HELO: mga03.intel.com Received: from azsmga001.ch.intel.com ([10.2.17.19]) by azsmga101.ch.intel.com with ESMTP; 18 Sep 2013 02:52:47 -0700 X-ExtLoop1: 1 Received: from irsmsx101.ger.corp.intel.com ([163.33.3.153]) by azsmga001.ch.intel.com with ESMTP; 18 Sep 2013 02:52:46 -0700 Received: from irsmsx151.ger.corp.intel.com (163.33.192.59) by IRSMSX101.ger.corp.intel.com (163.33.3.153) with Microsoft SMTP Server (TLS) id 14.3.123.3; Wed, 18 Sep 2013 10:52:46 +0100 Received: from irsmsx104.ger.corp.intel.com ([169.254.5.69]) by IRSMSX151.ger.corp.intel.com ([169.254.4.177]) with mapi id 14.03.0123.003; Wed, 18 Sep 2013 10:52:46 +0100 From: "Metzger, Markus T" To: Jan Kratochvil CC: "gdb-patches@sourceware.org" Subject: RE: [patch v4 24/24] record-btrace: skip tail calls in back trace Date: Wed, 18 Sep 2013 09:52:00 -0000 Message-ID: References: <1372842874-28951-1-git-send-email-markus.t.metzger@intel.com> <1372842874-28951-25-git-send-email-markus.t.metzger@intel.com> <20130818190949.GS24153@host2.jankratochvil.net> In-Reply-To: Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes X-SW-Source: 2013-09/txt/msg00574.txt.bz2 > -----Original Message----- > From: Metzger, Markus T > Sent: Wednesday, September 18, 2013 10:28 AM > One way to solve this would be to add a BTRACE_TAILCALL_FRAME and > extend struct target_ops to provide two optional unwinders that are both > tried before any arch unwinder. I'd try this unless you have a better id= ea. This fixes all fails in the existing tests. There's one problem found by a new test I added: finish from a tail-called function will not stop stepping. I'll first incorporate the above fix into the patch series and send an upda= ted version out for review later today. Then I'll look at the finish-from-tail= call problem. Regards, Markus. Intel GmbH Dornacher Strasse 1 85622 Feldkirchen/Muenchen, Deutschland Sitz der Gesellschaft: Feldkirchen bei Muenchen Geschaeftsfuehrer: Christian Lamprechter, Hannes Schwaderer, Douglas Lusk Registergericht: Muenchen HRB 47456 Ust.-IdNr./VAT Registration No.: DE129385895 Citibank Frankfurt a.M. (BLZ 502 109 00) 600119052