From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 21893 invoked by alias); 7 Jan 2014 12:17:13 -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 21876 invoked by uid 89); 7 Jan 2014 12:17:10 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-2.5 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2 X-HELO: mail-ve0-f173.google.com Received: from mail-ve0-f173.google.com (HELO mail-ve0-f173.google.com) (209.85.128.173) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Tue, 07 Jan 2014 12:17:08 +0000 Received: by mail-ve0-f173.google.com with SMTP id oz11so42208veb.4 for ; Tue, 07 Jan 2014 04:17:06 -0800 (PST) MIME-Version: 1.0 X-Received: by 10.52.113.97 with SMTP id ix1mr60076682vdb.9.1389097026505; Tue, 07 Jan 2014 04:17:06 -0800 (PST) Received: by 10.52.254.168 with HTTP; Tue, 7 Jan 2014 04:17:06 -0800 (PST) In-Reply-To: References: <87iotxm15i.fsf@fleche.redhat.com> Date: Tue, 07 Jan 2014 12:17:00 -0000 Message-ID: Subject: Re: [PATCH] [AARCH64]: Pointer mangling support for Aarch64 From: Marcus Shawcroft To: Venkataramanan Kumar Cc: libc-ports@sourceware.org, Patch Tracking Content-Type: text/plain; charset=ISO-8859-1 X-IsSubscribed: yes X-SW-Source: 2014-01/txt/msg00021.txt.bz2 On 7 January 2014 11:05, Venkataramanan Kumar wrote: > I looked at x86 and powerpc ports. So for Aarch64 > longjmp/longjmp_target probe expects > * first argument 8@address of jmpbuf in x0. > * second argument -4@return val in x1. > * third argument 8@ address of target in LR/X30. Hi, I'm not familiar with the inner workings of STAP probes, can you explain what the arguments of longjmp_target should be at a semantic level rather than the proposed location to get the values from? Do we need probes in setjmp aswell? Cheers /Marcus