From owner-freebsd-smp Mon Nov 27 17:31: 7 2000 Delivered-To: freebsd-smp@freebsd.org Received: from io.yi.org (unknown [24.70.218.157]) by hub.freebsd.org (Postfix) with ESMTP id 014D837B4C5 for ; Mon, 27 Nov 2000 17:31:06 -0800 (PST) Received: from io.yi.org (localhost.gvcl1.bc.wave.home.com [127.0.0.1]) by io.yi.org (Postfix) with ESMTP id 1A217BA78; Mon, 27 Nov 2000 17:31:05 -0800 (PST) X-Mailer: exmh version 2.1.1 10/15/1999 To: Michael Williams Cc: smp@FreeBSD.ORG Subject: Re: BSD/OS interrupt code In-Reply-To: Message from Michael Williams of "Mon, 27 Nov 2000 17:17:37 PST." <3A2307B1.A2715334@iprg.nokia.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Mon, 27 Nov 2000 17:31:05 -0800 From: Jake Burkholder Message-Id: <20001128013105.1A217BA78@io.yi.org> Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > One application Solaris has for this "trick" of building handlers on the fly, is > to install debugging/verbose handlers dynamically, especially where the initial > handlers do some vectoring (small branches) before jumping off to do hard work. > The miss handlers do this for example. > > As far as which instruction format is "simple", I'm curious, why do you suggest > x86 as an example? > I just meant that everything is on a byte boundary, so poking in the arguments is relatively easy. No shifting or masking is required and you can fit a full virtual address in one piece in the instruction stream. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message