From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 29856 invoked by alias); 20 Jan 2014 17:02:07 -0000 Mailing-List: contact libc-ports-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: libc-ports-owner@sourceware.org Received: (qmail 29847 invoked by uid 89); 20 Jan 2014 17:02:06 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.0 required=5.0 tests=AWL,BAYES_00,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-ie0-f174.google.com Received: from mail-ie0-f174.google.com (HELO mail-ie0-f174.google.com) (209.85.223.174) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Mon, 20 Jan 2014 17:02:04 +0000 Received: by mail-ie0-f174.google.com with SMTP id tp5so2156475ieb.5 for ; Mon, 20 Jan 2014 09:02:03 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=KkGmljme0p402yIZ4SqQzw2IrpOG5BfgTLPDAml5FLw=; b=IuTN4ToPEoLXZipagc9HVR20qlzMu5/UXOCgVZ2loGCQcpDphsfI21jH1OL3oO6yJe k0jYEiAEFqLDUGgMoJe4j2KVSMkrVX9Psxyy2u7FrenbNbDZOFl9s+ErjkRZ2ITLAAP4 1KOmhawFDNMh1+0fWUhqoprbI8bMRsBb1GyFEcaBS6WEID3b8/zI3Qs9zW7m5k5G/z8b EwxHNe9+fPineRp0iYvh0UkDcgKmN4YAdGyA9tDXIa16OyFvUhghyG8ax+f/0hXKYlet w7K3uD80QPOI5DsRqcTrqNWIyV55PyUq4radT7Zz9rV7qZ/eK3cYBmhuP0EEFH7/iuTu 56tQ== X-Gm-Message-State: ALoCoQkhhxMFXnUAaOsrxL2/LZo6ipxkDLZbTleJIkwXkXZeIJ88wZ/d+s6AM/Ys83DXv9A+i4sJ MIME-Version: 1.0 X-Received: by 10.50.25.129 with SMTP id c1mr13241399igg.23.1390237322987; Mon, 20 Jan 2014 09:02:02 -0800 (PST) Received: by 10.64.20.52 with HTTP; Mon, 20 Jan 2014 09:02:02 -0800 (PST) In-Reply-To: <87txcyhabd.fsf@fleche.redhat.com> References: <87iotxm15i.fsf@fleche.redhat.com> <87fvozhddn.fsf@fleche.redhat.com> <87txcyhabd.fsf@fleche.redhat.com> Date: Mon, 20 Jan 2014 17:02:00 -0000 Message-ID: Subject: Re: [PATCH] [AARCH64]: Pointer mangling support for Aarch64 From: Will Newton To: Tom Tromey Cc: Marcus Shawcroft , Venkataramanan Kumar , "libc-ports@sourceware.org" , Patch Tracking Content-Type: text/plain; charset=ISO-8859-1 X-IsSubscribed: yes X-SW-Source: 2014-01/txt/msg00042.txt.bz2 On 20 January 2014 16:44, Tom Tromey wrote: >>>>>> "Will" == Will Newton writes: > > Will> Can you confirm that gdb does not use the longjmp_target probe? It > Will> doesn't appear to use it as far as I can tell. Are you aware of what > Will> consumers there are for this probe point? > > Yeah, gdb uses the "longjmp" probe, not "longjmp_target". > I don't know what uses the latter; though it's worth noting that all > probes are available to gdb and systemtap users, so I wouldn't > necessarily know whether someone is using it. It's not clear to me the difference between the two - they take the same arguments as far as I can tell (longjmp arguments 1 and 2, and the target PC) but longjmp_target occurs at some later point which seems implementation dependant. For that reason I would propose new ports (or ports lacking these probes entirely such as ARM) not implement longjmp_target unless there is a compelling reason to do so. -- Will Newton Toolchain Working Group, Linaro