From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7340 invoked by alias); 31 Jul 2009 14:36:14 -0000 Received: (qmail 7328 invoked by uid 22791); 31 Jul 2009 14:36:13 -0000 X-SWARE-Spam-Status: No, hits=-1.6 required=5.0 tests=AWL,BAYES_00,MSGID_FROM_MTA_HEADER,SPF_PASS X-Spam-Check-By: sourceware.org Received: from mtagate7.de.ibm.com (HELO mtagate7.de.ibm.com) (195.212.29.156) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Fri, 31 Jul 2009 14:36:07 +0000 Received: from d12nrmr1607.megacenter.de.ibm.com (d12nrmr1607.megacenter.de.ibm.com [9.149.167.49]) by mtagate7.de.ibm.com (8.14.3/8.13.8) with ESMTP id n6VEZUii190770 for ; Fri, 31 Jul 2009 14:35:30 GMT Received: from d12av02.megacenter.de.ibm.com (d12av02.megacenter.de.ibm.com [9.149.165.228]) by d12nrmr1607.megacenter.de.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id n6VEZUUi2588764 for ; Fri, 31 Jul 2009 16:35:30 +0200 Received: from d12av02.megacenter.de.ibm.com (loopback [127.0.0.1]) by d12av02.megacenter.de.ibm.com (8.12.11.20060308/8.13.3) with ESMTP id n6VEZUZ7028363 for ; Fri, 31 Jul 2009 16:35:30 +0200 Received: from tuxmaker.boeblingen.de.ibm.com (tuxmaker.boeblingen.de.ibm.com [9.152.85.9]) by d12av02.megacenter.de.ibm.com (8.12.11.20060308/8.12.11) with SMTP id n6VEZTLo028336; Fri, 31 Jul 2009 16:35:29 +0200 Message-Id: <200907311435.n6VEZTLo028336@d12av02.megacenter.de.ibm.com> Received: by tuxmaker.boeblingen.de.ibm.com (sSMTP sendmail emulation); Fri, 31 Jul 2009 16:35:29 +0200 Subject: Re: [rfc] Infrastructure to disable breakpoints during inferior startup To: pedro@codesourcery.com (Pedro Alves) Date: Fri, 31 Jul 2009 15:45:00 -0000 From: "Ulrich Weigand" Cc: gdb-patches@sourceware.org, tromey@redhat.com, jkratoch@redhat.com (Jan Kratochvil) In-Reply-To: <200907231751.01413.pedro@codesourcery.com> from "Pedro Alves" at Jul 23, 2009 05:51:00 PM MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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: 2009-07/txt/msg00761.txt.bz2 Pedro Alves wrote: > On Thursday 23 July 2009 17:31:02, Ulrich Weigand wrote: > > > Thinking about it a bit more, it seems that in the context of Pedro's > > patches, this flag really needs to be a symbol-space property, not an > > inferior property: it basically says that objfiles in this symbol > > space have not yet been relocated to their final addresses and therefore > > cannot be used to determine breakpoint addresses. > > > > In the situation where multiple inferiors potentially share a symbol > > space, this property applies to all of them. Also, with Pedro's > > patches breakpoints will be per-symbol-space, not per-inferior, so > > we'll have to disable/re-enable all breakpoints in a given symbol > > space (we cannot really disable all breakpoints of a given inferior, > > as this information is not actually known). > > > > So it seems that after all adding the flag to struct inferior now > > might be a step in the wrong direction; it should instead be added to > > struct symbol_space once Pedro's patches are in. > > > > Pedro, any comments? > > Yes, I agree with you. (although in the only target supporting > shared symbol space, DICOS, we don't run or start programs, we only > attach to already running ones, and if we did [it would be possible to > add such feature], the code is always already all relocated when we > connect --- due to the global shared libraries feature of DICOS.) > > While Tom's right, there has been a stream of changes recently that > constantly require that I adjust the multi-exec patch set, I'll handle > this one easily when your patch is in; I don't think it will > be much trouble. Thanks, Pedro! I've checked the patch in now; if you have any issues in adapting the multi-exec patch, please let me know; I'd be happy to help ... Bye, Ulrich -- Dr. Ulrich Weigand GNU Toolchain for Linux on System z and Cell BE Ulrich.Weigand@de.ibm.com