From owner-svn-src-all@FreeBSD.ORG Thu May 30 06:20:51 2013 Return-Path: Delivered-To: svn-src-all@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by hub.freebsd.org (Postfix) with ESMTP id 3FB067D0; Thu, 30 May 2013 06:20:51 +0000 (UTC) (envelope-from ed@FreeBSD.org) Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:1900:2254:2068::e6a:0]) by mx1.freebsd.org (Postfix) with ESMTP id 1A98C18E; Thu, 30 May 2013 06:20:51 +0000 (UTC) Received: from svn.freebsd.org ([127.0.1.70]) by svn.freebsd.org (8.14.6/8.14.6) with ESMTP id r4U6KouE045699; Thu, 30 May 2013 06:20:50 GMT (envelope-from ed@svn.freebsd.org) Received: (from ed@localhost) by svn.freebsd.org (8.14.6/8.14.5/Submit) id r4U6Ko74045697; Thu, 30 May 2013 06:20:50 GMT (envelope-from ed@svn.freebsd.org) Message-Id: <201305300620.r4U6Ko74045697@svn.freebsd.org> From: Ed Schouten Date: Thu, 30 May 2013 06:20:50 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r251124 - head/lib/libcompiler_rt X-SVN-Group: head MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 30 May 2013 06:20:51 -0000 Author: ed Date: Thu May 30 06:20:50 2013 New Revision: 251124 URL: http://svnweb.freebsd.org/changeset/base/251124 Log: Add __sync_synchronize(). This function can easily be implemented on top of the mb() macro provided by . Added: head/lib/libcompiler_rt/__sync_synchronize.c (contents, props changed) Modified: head/lib/libcompiler_rt/Makefile Modified: head/lib/libcompiler_rt/Makefile ============================================================================== --- head/lib/libcompiler_rt/Makefile Thu May 30 06:20:23 2013 (r251123) +++ head/lib/libcompiler_rt/Makefile Thu May 30 06:20:50 2013 (r251124) @@ -164,6 +164,7 @@ SRCF+= __sync_fetch_and_add_4 \ __sync_fetch_and_sub_4 \ __sync_fetch_and_xor_4 \ __sync_lock_test_and_set_4 \ + __sync_synchronize \ __sync_val_compare_and_swap_4 .endif .if ${MACHINE_ARCH:Mmips64*} != "" Added: head/lib/libcompiler_rt/__sync_synchronize.c ============================================================================== --- /dev/null 00:00:00 1970 (empty, because file is newly added) +++ head/lib/libcompiler_rt/__sync_synchronize.c Thu May 30 06:20:50 2013 (r251124) @@ -0,0 +1,47 @@ +/*- + * Copyright (c) 2013 Ed Schouten + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include + +#ifdef __clang__ +static void +atomic_func(void) +#else +void +__sync_synchronize(void) +#endif +{ + + mb(); +} + +#ifdef __clang__ +__strong_reference(atomic_func, __sync_synchronize); +#endif