From owner-freebsd-hackers@FreeBSD.ORG Thu Jul 8 09:20:29 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6FFA716A4CF for ; Thu, 8 Jul 2004 09:20:29 +0000 (GMT) Received: from rwcrmhc12.comcast.net (rwcrmhc12.comcast.net [216.148.227.85]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3E75F43D53 for ; Thu, 8 Jul 2004 09:20:29 +0000 (GMT) (envelope-from julian@elischer.org) Received: from interjet.elischer.org ([24.7.73.28]) by comcast.net (rwcrmhc12) with ESMTP id <2004070809202801400jbo28e>; Thu, 8 Jul 2004 09:20:28 +0000 Received: from localhost (localhost.elischer.org [127.0.0.1]) by InterJet.elischer.org (8.9.1a/8.9.1) with ESMTP id CAA90497; Thu, 8 Jul 2004 02:20:26 -0700 (PDT) Date: Thu, 8 Jul 2004 02:20:25 -0700 (PDT) From: Julian Elischer To: Steven Smith In-Reply-To: <20040708091417.GA967@archibold.chu.cam.ac.uk> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-hackers@freebsd.org cc: sos22@srcf.ucam.org Subject: Re: Article on Sun's DTrace X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 08 Jul 2004 09:20:29 -0000 On Thu, 8 Jul 2004, Steven Smith wrote: > It's also possible to put probes on the return instruction of the > function. I'm not sure how they're actually finding that, though. I think the return probe is done by adding a call probe that changes the return address.