From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 20733 invoked by alias); 11 Jul 2005 19:08:52 -0000 Mailing-List: contact gdb-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-owner@sources.redhat.com Received: (qmail 20393 invoked by uid 22791); 11 Jul 2005 19:08:43 -0000 Received: from palrel13.hp.com (HELO palrel13.hp.com) (156.153.255.238) by sourceware.org (qpsmtpd/0.30-dev) with ESMTP; Mon, 11 Jul 2005 19:08:43 +0000 Received: from cllmail.cup.hp.com (cllmail.cup.hp.com [15.244.92.83]) by palrel13.hp.com (Postfix) with ESMTP id EE6611C075C2; Mon, 11 Jul 2005 22:43:40 -0700 (PDT) Received: from [15.244.95.35] (kh6000.americas.hpqcorp.net [15.244.95.35]) by cllmail.cup.hp.com (8.9.3 (PHNE_29774)/8.9.3 SMKit7.04) with ESMTP id MAA26989; Mon, 11 Jul 2005 12:08:40 -0700 (PDT) In-Reply-To: <20050711185133.GA6213@nevyn.them.org> References: <20050711154926.GB30937@nevyn.them.org> <94cbbbf6ad84e632126e7a0e59830425@cup.hp.com> <20050711185133.GA6213@nevyn.them.org> Mime-Version: 1.0 (Apple Message framework v622) Content-Type: text/plain; charset=US-ASCII; format=flowed Message-Id: <4acb0c2bbb8becf8feaa330e1ea28100@cup.hp.com> Content-Transfer-Encoding: 7bit Cc: Andrew STUBBS , GDB From: Marcel Moolenaar Subject: Re: Invalid registers Date: Mon, 11 Jul 2005 19:08:00 -0000 To: Daniel Jacobowitz X-SW-Source: 2005-07/txt/msg00129.txt.bz2 On Jul 11, 2005, at 11:51 AM, Daniel Jacobowitz wrote: > On Mon, Jul 11, 2005 at 11:47:01AM -0700, Marcel Moolenaar wrote: >> Given that registers are available when a value has been supplied, >> it's logical to assume (a priori) that a register is unavailable >> when no value has been supplied. > > You are talking about a completely different meaning of unavailable > than Andrew was. He's talking about unwinding, i.e. registers which > have been modified but not saved by an intervening stack frame. Ah, I see. Wouldn't this apply only to caller-saved registers? And wouldn't it be reasonable to mark them as unavailable unless proven otherwise? -- Marcel Moolenaar USPA: A-39004 marcel@xcllnt.net