From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 32714 invoked by alias); 13 May 2002 23:14:25 -0000 Mailing-List: contact gdb-patches-help@sources.redhat.com; run by ezmlm Precedence: bulk List-Subscribe: List-Archive: List-Post: List-Help: , Sender: gdb-patches-owner@sources.redhat.com Received: (qmail 32706 invoked from network); 13 May 2002 23:14:24 -0000 Received: from unknown (HELO localhost.redhat.com) (216.138.202.10) by sources.redhat.com with SMTP; 13 May 2002 23:14:24 -0000 Received: from cygnus.com (localhost [127.0.0.1]) by localhost.redhat.com (Postfix) with ESMTP id B103D3E16; Mon, 13 May 2002 19:14:32 -0400 (EDT) Message-ID: <3CE048D8.9080704@cygnus.com> Date: Mon, 13 May 2002 16:14:00 -0000 From: Andrew Cagney User-Agent: Mozilla/5.0 (X11; U; NetBSD macppc; en-US; rv:1.0rc1) Gecko/20020429 X-Accept-Language: en-us, en MIME-Version: 1.0 To: Kevin Buettner Cc: davidm@hpl.hp.com, gdb-patches@sources.redhat.com Subject: Re: new gdb arch routine FRAME_UNCHANGED References: <200205110023.g4B0NVCF004832@napali.hpl.hp.com> <3CDC6E2F.9020702@cygnus.com> <15580.31869.406085.760707@napali.hpl.hp.com> <3CDDE701.90603@cygnus.com> <15584.11515.164115.822423@napali.hpl.hp.com> <3CE04238.3060102@cygnus.com> <1020513225722.ZM616@localhost.localdomain> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-SW-Source: 2002-05/txt/msg00509.txt.bz2 > On May 13, 6:46pm, Andrew Cagney wrote: > > >> Also, code wants to determine which code is more INNER_THAN(). With two >> stacks, that starts to get really weird! > > > Yes. On IA-64, the meaning of INNER_THAN is different for the two stacks. > (I.e, the stacks grow in different directions.) > > Kevin My brain hurts! This is increasingly like floating point with +0 != -0. We have a situtation where for: frame_id a, b; // contain both SP's and PC the test: !FRAME_ID_INNER_THAN(a,b) && !FRAME_INNER_THAN(b,a) does not imply FRAME_ID_SAME(a,b) (or what ever the functions are called). Andrew