From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 28793 invoked by alias); 23 Sep 2010 22:12:31 -0000 Mailing-List: contact archer-help@sourceware.org; run by ezmlm Sender: Precedence: bulk List-Post: List-Help: List-Subscribe: List-Id: Received: (qmail 28637 invoked by uid 22791); 23 Sep 2010 22:12:30 -0000 X-SWARE-Spam-Status: No, hits=-5.7 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_HI,SPF_HELO_PASS,T_RP_MATCHES_RCVD X-Spam-Check-By: sourceware.org Date: Thu, 23 Sep 2010 22:12:00 -0000 From: "Frank Ch. Eigler" To: Roland McGrath Cc: Oleg Nesterov , archer@sourceware.org, utrace-devel@redhat.com Subject: Re: gdbstub initial code, v11 Message-ID: <20100923212957.GC23722@redhat.com> References: <20100922022226.GA27400@redhat.com> <20100922231451.GA11198@redhat.com> <20100922233909.GF2727@redhat.com> <20100922234442.GA13379@redhat.com> <20100923212138.5B3E940048@magilla.sf.frob.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100923212138.5B3E940048@magilla.sf.frob.com> User-Agent: Mutt/1.4.2.2i X-SW-Source: 2010-q3/txt/msg00218.txt.bz2 Hi - On Thu, Sep 23, 2010 at 02:21:38PM -0700, Roland McGrath wrote: > > > The ones I'm talking about are Z2/Z3 for (data) watchpoints. > > Ah, OK, thanks. I'll try to understand how this works. > > In theory these will map to uses of the hw_breakpoint interface. Not quite. The hw_breakpoint widget is only useful for the first few active watchpoints. The rest, which gdb calls software watchpoints, can be implemented in ugdb by local singlestep + polling, without gdb's live involvement. - FChE