From owner-freebsd-alpha Thu Feb 24 12:25:45 2000 Delivered-To: freebsd-alpha@freebsd.org Received: from finch-post-12.mail.demon.net (finch-post-12.mail.demon.net [194.217.242.41]) by hub.freebsd.org (Postfix) with ESMTP id F042437B7CB for ; Thu, 24 Feb 2000 12:23:26 -0800 (PST) (envelope-from dfr@nlsystems.com) Received: from nlsys.demon.co.uk ([158.152.125.33] helo=herring.nlsystems.com) by finch-post-12.mail.demon.net with esmtp (Exim 2.12 #1) id 12O4n4-0003mc-0C; Thu, 24 Feb 2000 20:23:14 +0000 Received: from salmon.nlsystems.com (salmon.nlsystems.com [10.0.0.3]) by herring.nlsystems.com (8.9.3/8.8.8) with ESMTP id UAA57482; Thu, 24 Feb 2000 20:26:30 GMT (envelope-from dfr@nlsystems.com) Date: Thu, 24 Feb 2000 20:26:22 +0000 (GMT) From: Doug Rabson To: John Polstra Cc: alpha@freebsd.org Subject: Re: pcb_onfault bug on alpha? In-Reply-To: <200002241658.IAA39924@vashon.polstra.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Thu, 24 Feb 2000, John Polstra wrote: > On a related topic, do you have any idea why they did all this > ".set noat" nonsense in copyout instead of simply using t0 to set > pcb_onfault as is done elsewhere? I can't see any reason why they'd > need to preserve t0 at this point. I can't think of a reason. Changing to use t0 would be the same number of instructions but the code would be neater... -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message