From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 14581 invoked by alias); 9 Mar 2012 21:15:46 -0000 Received: (qmail 14568 invoked by uid 22791); 9 Mar 2012 21:15:45 -0000 X-SWARE-Spam-Status: No, hits=-6.9 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,TW_GJ,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; Fri, 09 Mar 2012 21:15:29 +0000 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q29LFSOi002976 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Fri, 9 Mar 2012 16:15:28 -0500 Received: from barimba (ovpn01.gateway.prod.ext.phx2.redhat.com [10.5.9.1]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id q29LFRlt026445 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO); Fri, 9 Mar 2012 16:15:28 -0500 From: Tom Tromey To: Sergio Durigan Junior Cc: gdb-patches@sourceware.org Subject: Re: [PATCH 0/3] Implement support for SystemTap probes on userspace References: Date: Fri, 09 Mar 2012 21:15:00 -0000 In-Reply-To: (Sergio Durigan Junior's message of "Fri, 09 Mar 2012 17:28:51 -0300") Message-ID: <87lin9iihc.fsf@fleche.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.0.94 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain 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: 2012-03/txt/msg00360.txt.bz2 >>>>> "Sergio" == Sergio Durigan Junior writes: Sergio> The third patch contains code to make use of the existing longjmp and Sergio> exception probes in glibc and libgcc, respectively. I believe Tom can Sergio> give more information about this patch, but the idea is that if we have Sergio> those probes available, GDB should use them because we don't need Sergio> debuginfo to access them. That sums it up very well. The probes are preferable for just this reason. The libgcc probes are upstream, so distros need only install sdt.h before building gcc to get the benefit. The glibc changes are in the Fedora RPM. I think we may try again to get them upstream. Tom