From owner-freebsd-alpha Wed Dec 19 19:28:26 2001 Delivered-To: freebsd-alpha@freebsd.org Received: from pcnet1.pcnet.com (pcnet1.pcnet.com [204.213.232.3]) by hub.freebsd.org (Postfix) with ESMTP id A415037B416 for ; Wed, 19 Dec 2001 19:28:24 -0800 (PST) Received: (from eischen@localhost) by pcnet1.pcnet.com (8.12.1/8.12.1) id fBK3RI8G012541; Wed, 19 Dec 2001 22:27:18 -0500 (EST) Date: Wed, 19 Dec 2001 22:27:17 -0500 (EST) From: Daniel Eischen To: Andrew Gallatin Cc: freebsd-alpha@freebsd.org Subject: Re: Munging jmp_bufs on alpha In-Reply-To: <15393.15450.563749.55393@grasshopper.cs.duke.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Wed, 19 Dec 2001, Andrew Gallatin wrote: > > Daniel Eischen writes: > > Included is a sample program that includes the jmp_buf-munging > > macros that use to work and that no longer work. [ Drew, you > > out there? You got these to work before ;-) ] > > Unfortunately, I no longer have the time to track -current on alpha.. > > I do have an idea where the problem might lie -- The alpha longjmp > relies on calling sigreturn to switch stacks. I imagine quite a bit > has changed in regard to returning from signals in the face of SMPng & > KSEs.. This test program uses _setjmp/_longjmp which don't use sigreturn (signal masks are not saved/restored). -- Dan Eischen To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message