From owner-freebsd-hackers  Tue Sep 15 08:03:06 1998
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Received: (from majordom@localhost)
          by hub.freebsd.org (8.8.8/8.8.8) id IAA24622
          for freebsd-hackers-outgoing; Tue, 15 Sep 1998 08:03:06 -0700 (PDT)
          (envelope-from owner-freebsd-hackers@FreeBSD.ORG)
Received: from terra.Sarnoff.COM (terra.sarnoff.com [130.33.11.203])
          by hub.freebsd.org (8.8.8/8.8.8) with SMTP id IAA24614
          for <freebsd-hackers@FreeBSD.ORG>; Tue, 15 Sep 1998 08:03:01 -0700 (PDT)
          (envelope-from rminnich@Sarnoff.COM)
Received: (from rminnich@localhost) by terra.Sarnoff.COM (8.6.12/8.6.12) id LAA15244; Tue, 15 Sep 1998 11:01:51 -0400
Date: Tue, 15 Sep 1998 11:01:50 -0400 (EDT)
From: "Ron G. Minnich" <rminnich@Sarnoff.COM>
X-Sender: rminnich@terra
To: Mikael Karpberg <karpen@ocean.campus.luth.se>
cc: Konrad Heuer <kheuer@gwdu60.gwdg.de>, freebsd-hackers@FreeBSD.ORG
Subject: Re: Catching SIGSEGV
In-Reply-To: <199809151330.PAA00371@ocean.campus.luth.se>
Message-ID: <Pine.SUN.3.91.980915110107.14273C-100000@terra>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
Sender: owner-freebsd-hackers@FreeBSD.ORG
Precedence: bulk
X-Loop: FreeBSD.ORG

On Tue, 15 Sep 1998, Mikael Karpberg wrote:
> My guess is that you would want to declare things like this:
> volatile int nsegv = 0;
> volatile int *ptr;
> int zero = 0;
> 
> Then the restarted "buf = *ptr;" line will not use a buffered value for ptr
> but read it from memory. I think.

Depends on the instruction and how restart happens. I think it's going to 
be iffy for portability. But it will be interesting to see how it works 
out :-)

ron

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-hackers" in the body of the message