From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 9137 invoked by alias); 13 Nov 2013 22:52:45 -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 9124 invoked by uid 89); 13 Nov 2013 22:52:44 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-0.9 required=5.0 tests=BAYES_00,FREEMAIL_ENVFROM_END_DIGIT,FREEMAIL_FROM,RDNS_NONE,SPF_PASS autolearn=no version=3.3.2 X-HELO: mail-pd0-f175.google.com Received: from Unknown (HELO mail-pd0-f175.google.com) (209.85.192.175) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with (AES128-SHA encrypted) ESMTPS; Wed, 13 Nov 2013 22:50:33 +0000 Received: by mail-pd0-f175.google.com with SMTP id r10so1076378pdi.34 for ; Wed, 13 Nov 2013 14:50:25 -0800 (PST) X-Received: by 10.68.197.234 with SMTP id ix10mr67643pbc.185.1384383025805; Wed, 13 Nov 2013 14:50:25 -0800 (PST) Received: from pebble.twiddle.net ([101.169.114.63]) by mx.google.com with ESMTPSA id jz4sm29993192pad.17.2013.11.13.14.50.21 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 13 Nov 2013 14:50:23 -0800 (PST) Message-ID: <52840226.4010801@twiddle.net> Date: Wed, 13 Nov 2013 22:52:00 -0000 From: Richard Henderson User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.1.0 MIME-Version: 1.0 To: Matt Turner , libc-ports@sourceware.org CC: Uros Bizjak , Mike Frysinger , Gentoo alpha AT Subject: Re: Signal handling broken on alpha since glibc-2.16 References: In-Reply-To: Content-Type: multipart/mixed; boundary="------------000509030209050508010301" X-IsSubscribed: yes X-SW-Source: 2013-11/txt/msg00009.txt.bz2 This is a multi-part message in MIME format. --------------000509030209050508010301 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-length: 470 On 11/04/2013 11:10 AM, Matt Turner wrote: > A test from the gcc test suite shows that signal handling is broken on > alpha since glibc-2.16. Bisecting before the glibc-ports merge is > rather hard. > > See: https://bugs.gentoo.org/show_bug.cgi?id=480740 (includes test case) > > Off hand, do any changes between 2.15 and 2.16 seem to be likely > candidates to cause this bug? It's likely to be change 7d1feb5693be7e606104cc2b6657c746a93e5926. Please try this. r~ --------------000509030209050508010301 Content-Type: text/plain; charset=UTF-8; name="zz" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="zz" Content-length: 818 diff --git a/ports/sysdeps/unix/sysv/linux/alpha/rt_sigaction.S b/ports/sysdeps/unix/sysv/linux/alpha/rt_sigaction.S index 3d291fd..bd55418 100644 --- a/ports/sysdeps/unix/sysv/linux/alpha/rt_sigaction.S +++ b/ports/sysdeps/unix/sysv/linux/alpha/rt_sigaction.S @@ -83,14 +83,15 @@ PSEUDO_END(__syscall_rt_sigaction) cfi_offset (64, \base + 2 * 8) .endm - .align 4 - cfi_startproc cfi_return_column (64) .cfi_signal_frame SIGCONTEXT_REGS -648 - cfi_def_cfa_offset (648) + + nop + .align 4 + __syscall_sigreturn: mov sp, a0 ldi v0, __NR_sigreturn @@ -98,8 +99,9 @@ __syscall_sigreturn: .size __syscall_sigreturn, .-__syscall_sigreturn .type __syscall_sigreturn, @function - .align 4 cfi_def_cfa_offset (176 + 648) + .align 4 + __syscall_rt_sigreturn: mov sp,a0 ldi v0,__NR_rt_sigreturn --------------000509030209050508010301--