1/* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22/* 23 * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 .ident "%Z%%M% %I% %E% SMI" 28 29#include <sys/asm_linkage.h> 30 .file "i386_locks.s" 31 ENTRY(tnfw_b_get_lock) 32#if defined (__amd64) 33 /* XX64 - fix me */ 34#else 35 movl 4(%esp), %edx 36 subl %eax, %eax 37 lock 38 btsl $0, (%edx) 39 jnc .L1 40 incl %eax 41.L1: 42#endif 43 ret 44 45 ENTRY(tnfw_b_clear_lock) 46#if defined (__amd64) 47 /* XX64 - fix me */ 48#else 49 movl 4(%esp), %eax 50 movb $0, (%eax) 51#endif 52 ret 53 54 ENTRY(tnfw_b_atomic_swap) 55#if defined (__amd64) 56 /* XX64 - fix me */ 57#else 58 movl 4(%esp), %edx 59 movl 8(%esp), %eax 60 xchgl %eax, (%edx) 61#endif 62 ret 63