From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 98456 invoked by alias); 13 Apr 2018 11:44:08 -0000 Mailing-List: contact elfutils-devel-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Post: List-Help: List-Subscribe: Sender: elfutils-devel-owner@sourceware.org Received: (qmail 98033 invoked by uid 89); 13 Apr 2018 11:44:07 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Checked: by ClamAV 0.99.4 on sourceware.org X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_PASS autolearn=ham version=3.3.2 spammy= X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,SPF_PASS autolearn=ham version=3.3.2 X-Spam-Checker-Version: SpamAssassin 3.3.2 (2011-06-06) on sourceware.org X-Spam-Level: X-HELO: gnu.wildebeest.org Received: from wildebeest.demon.nl (HELO gnu.wildebeest.org) (212.238.236.112) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Fri, 13 Apr 2018 11:44:06 +0000 Received: from tarox.wildebeest.org (tarox.wildebeest.org [172.31.17.39]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by gnu.wildebeest.org (Postfix) with ESMTPSA id 57F553014709 for ; Fri, 13 Apr 2018 13:44:04 +0200 (CEST) Received: by tarox.wildebeest.org (Postfix, from userid 1000) id 512E8413CEBB; Fri, 13 Apr 2018 13:44:04 +0200 (CEST) Message-ID: <1523619844.13039.2.camel@klomp.org> Subject: Re: [PATCH] aarch64: Add default cfi rule to restore SP from CFA address. From: Mark Wielaard To: elfutils-devel@sourceware.org Date: Fri, 13 Apr 2018 11:44:00 -0000 In-Reply-To: <1523436446-11419-1-git-send-email-mark@klomp.org> References: <1523436446-11419-1-git-send-email-mark@klomp.org> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Mailer: Evolution 3.22.6 (3.22.6-14.el7) Mime-Version: 1.0 X-Spam-Flag: NO X-IsSubscribed: yes X-SW-Source: 2018-q2/txt/msg00009.txt.bz2 On Wed, 2018-04-11 at 10:47 +0200, Mark Wielaard wrote: > The CFA is set by default to the stack pointer of the previous frame. > So that is also how we can always restore the SP. This default aarch64 > CFI rule is necessary on Fedora 28 with GCC8 to make the run-deleted.sh > and run-backtrace-dwarf.sh testcases work. Pushed to master.