/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2004 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ .ident "%Z%%M% %I% %E% SMI" .file "%M%" #include "SYS.h" / / _lock_try(lp) / - returns non-zero on success. / ENTRY(_lock_try) movl $1,%eax movl 4(%esp),%ecx xchgb %al, (%ecx) xorb $1, %al ret SET_SIZE(_lock_try) / / _lock_clear(lp) / - clear lock and force it to appear unlocked in memory. / ENTRY(_lock_clear) movl 4(%esp),%eax movb $0, (%eax) ret SET_SIZE(_lock_clear)