From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 4651 invoked by alias); 23 Dec 2010 19:52:41 -0000 Received: (qmail 4643 invoked by uid 22791); 23 Dec 2010 19:52:40 -0000 X-SWARE-Spam-Status: No, hits=-1.0 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_NONE,SPF_SOFTFAIL X-Spam-Check-By: sourceware.org Received: from mtaout23.012.net.il (HELO mtaout23.012.net.il) (80.179.55.175) by sourceware.org (qpsmtpd/0.43rc1) with ESMTP; Thu, 23 Dec 2010 19:52:36 +0000 Received: from conversion-daemon.a-mtaout23.012.net.il by a-mtaout23.012.net.il (HyperSendmail v2007.08) id <0LDW00M00CEE1300@a-mtaout23.012.net.il> for gdb-patches@sourceware.org; Thu, 23 Dec 2010 21:52:34 +0200 (IST) Received: from HOME-C4E4A596F7 ([84.229.167.122]) by a-mtaout23.012.net.il (HyperSendmail v2007.08) with ESMTPA id <0LDW00LV7CJLTZ60@a-mtaout23.012.net.il>; Thu, 23 Dec 2010 21:52:34 +0200 (IST) Date: Thu, 23 Dec 2010 20:30:00 -0000 From: Eli Zaretskii Subject: Re: [doc] Remote protocol: undocumented return value for 'p' and 'g' In-reply-to: <201012231913.08466.pedro@codesourcery.com> To: Pedro Alves Cc: gdb-patches@sourceware.org Reply-to: Eli Zaretskii Message-id: <83sjxoe0ac.fsf@gnu.org> References: <201012231913.08466.pedro@codesourcery.com> X-IsSubscribed: yes 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: 2010-12/txt/msg00444.txt.bz2 > From: Pedro Alves > Date: Thu, 23 Dec 2010 19:13:08 +0000 > > It's intended usage is in the context of inspecting tracepoints, to > report "the register exists, but I don't know its value, because I > haven't collected it." > > (We actually have a local series of 60 or so (and counting) > trace debugging related patches that actually make use of > this mechanism). > > Okay to apply? Yes, thanks. > +literal @samp{x}'s in place of the register data digits, to indicate > +the corresponding register has not been collected, thus its value is "... to indicate that the corresponding register ..." > +registers 0 and 2 have not been collected, while registers 1 and 3 > +have been collected, and have value zero each: ^^^^^^^^^^^^^^^^^^^^^^^^ "and both have zero value"