From owner-freebsd-hackers Tue Apr 23 06:28:02 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id GAA02247 for hackers-outgoing; Tue, 23 Apr 1996 06:28:02 -0700 (PDT) Received: from bacall.lodgenet.com (bacall.lodgenet.com [205.138.147.242]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id GAA02207 for ; Tue, 23 Apr 1996 06:27:58 -0700 (PDT) Received: (from mail@localhost) by bacall.lodgenet.com (8.6.12/8.6.12) id IAA16986; Tue, 23 Apr 1996 08:25:59 -0500 Received: from garbo.lodgenet.com(204.124.123.250) by bacall via smap (V1.3) id sma016982; Tue Apr 23 08:25:45 1996 Received: from jake.lodgenet.com (jake.lodgenet.com [204.124.120.30]) by garbo.lodgenet.com (8.6.12/8.6.9) with ESMTP id IAA28005; Tue, 23 Apr 1996 08:29:50 -0500 Received: from localhost (localhost [127.0.0.1]) by jake.lodgenet.com (8.7.5/8.6.12) with SMTP id IAA18341; Tue, 23 Apr 1996 08:29:45 -0500 (CDT) Message-Id: <199604231329.IAA18341@jake.lodgenet.com> X-Authentication-Warning: jake.lodgenet.com: Host localhost [127.0.0.1] didn't use HELO protocol X-Mailer: exmh version 1.6.2 7/18/95 To: Greg Lehey cc: hackers@freebsd.org (FreeBSD hackers) Subject: Re: request for a new "feature" as regards DDB In-reply-to: Your message of "Tue, 23 Apr 1996 09:00:15 MDT." <199604230703.JAA07887@nixpbe.pdb.sni.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Tue, 23 Apr 1996 08:29:45 -0500 From: "Eric L. Hernes" Sender: owner-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk Greg Lehey writes: > >Good idea. I'll add it to my list. For those who don't know, I had >planned to make some major changes to ddb Real Soon Now. > I can't remember if it was mentioned before, but I'd like to see the hardware debug registers used for memory/io watchpoints. I'll probably whip up something rudimentary in the next couple days, but full blown support in ddb would be nice. BTW has anyone used the watchpoints claimed to be available in ddb? It looks like it goes through the vm system, does that make sense? The man page says that watchpoints on user space work best, what sense does it make to put a kernel watchpoint on a user address? > >On the other subject, changing out of X into character mode: I believe SCO uses dbtty(0|1) to switch from vt0 to sio0 on the fly, they also note that the serial line is not initialized in any way, so if you've got a mouse sitting there, it's now you're console. I'd say this is probably one of the better ways to handle this situation. > >Greg > > eric -- erich@lodgenet.com http://rrnet.com/~erich erich@rrnet.com