From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/8369 Path: news.gmane.org!not-for-mail From: Rich Felker Newsgroups: gmane.linux.lib.musl.general Subject: Re: [PATCH v10] Build process uses script to add CFI directives to x86 asm Date: Wed, 26 Aug 2015 16:29:57 -0400 Message-ID: <20150826202957.GR32742@brightrain.aerifal.cx> References: <1436533404-7195-1-git-send-email-alexinbeijing@gmail.com> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1440621017 2225 80.91.229.3 (26 Aug 2015 20:30:17 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 26 Aug 2015 20:30:17 +0000 (UTC) To: musl@lists.openwall.com Original-X-From: musl-return-8381-gllmg-musl=m.gmane.org@lists.openwall.com Wed Aug 26 22:30:17 2015 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by plane.gmane.org with smtp (Exim 4.69) (envelope-from ) id 1ZUhKl-0003d1-QE for gllmg-musl@m.gmane.org; Wed, 26 Aug 2015 22:30:11 +0200 Original-Received: (qmail 32095 invoked by uid 550); 26 Aug 2015 20:30:10 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Original-Received: (qmail 32072 invoked from network); 26 Aug 2015 20:30:09 -0000 Content-Disposition: inline In-Reply-To: <1436533404-7195-1-git-send-email-alexinbeijing@gmail.com> User-Agent: Mutt/1.5.21 (2010-09-15) Original-Sender: Rich Felker Xref: news.gmane.org gmane.linux.lib.musl.general:8369 Archived-At: On Fri, Jul 10, 2015 at 03:03:24PM +0200, Alex Dowad wrote: > Some functions implemented in asm need to use EBP for purposes other than acting > as a frame pointer. (Notably, it is used for the 6th argument to syscalls with > 6 arguments.) Without frame pointers, GDB can only show backtraces if it gets > CFI information from a .debug_frame or .eh_frame ELF section. > [...] Committed, finally! Sorry for the long delay. I was using this locally without problem and somehow forgot that I had not actually committed it despite saying I would do so if no problems were found. The only change I made was re-folding the commit message to fit well in 80 columns. Rich