From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 7649 invoked by alias); 7 Jul 2003 21:12:55 -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 7642 invoked from network); 7 Jul 2003 21:12:54 -0000 Received: from unknown (HELO nevyn.them.org) (66.93.172.17) by sources.redhat.com with SMTP; 7 Jul 2003 21:12:54 -0000 Received: from drow by nevyn.them.org with local (Exim 3.36 #1 (Debian)) id 19ZdI5-00058a-00; Mon, 07 Jul 2003 17:12:53 -0400 Date: Mon, 07 Jul 2003 21:12:00 -0000 From: Daniel Jacobowitz To: Andrew Cagney Cc: gdb-patches@sources.redhat.com, rearnsha@arm.com Subject: Re: [RFA/ARM] Framificate the ARM port [3/3] Message-ID: <20030707211253.GA19719@nevyn.them.org> Mail-Followup-To: Andrew Cagney , gdb-patches@sources.redhat.com, rearnsha@arm.com References: <20030630225509.GA30844@nevyn.them.org> <3F01A9A0.90005@redhat.com> <20030707134715.GA24634@nevyn.them.org> <3F0987C2.4010007@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <3F0987C2.4010007@redhat.com> User-Agent: Mutt/1.5.1i X-SW-Source: 2003-07/txt/msg00146.txt.bz2 On Mon, Jul 07, 2003 at 10:46:26AM -0400, Andrew Cagney wrote: > > >Makes sense. I will need to cache a PC to fix some corner cases with > >signal trampolines, but I'm not fixing that bug right now. > > Can you expand? I can understand cacheing the previous frame's PC but > not this frame's. We can't use frame_func_unwind on a sigtramp frame. So we'll need to cache some information to figure out the PC's offset within the trampoline. Otherwise single-stepping in the trampoline will yield two different frame IDs. -- Daniel Jacobowitz MontaVista Software Debian GNU/Linux Developer