1 /* 2 * Copyright (c) 1998 John Birrell <jb@cimlogic.com.au>. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by John Birrell. 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * $FreeBSD: src/lib/libc/gen/_spinlock_stub.c,v 1.4 1999/08/27 23:58:27 peter Exp $ 33 * $DragonFly: src/lib/libc/gen/_spinlock_stub.c,v 1.5 2005/02/01 22:35:19 joerg Exp $ 34 * 35 */ 36 37 #include <stdio.h> 38 39 /* Don't build these stubs into libc_r: */ 40 #include "spinlock.h" 41 42 /* 43 * Declare weak definitions in case the application is not linked 44 * with libpthread. 45 */ 46 __weak_reference(_atomic_lock_stub,_atomic_lock); 47 __weak_reference(_spinlock_stub,_spinlock); 48 __weak_reference(_spinlock_debug_stub,_spinlock_debug); 49 __weak_reference(_spinunlock_stub,_spinunlock); 50 51 /* 52 * This function is a stub for the _atomic_lock function in libpthread. 53 */ 54 long 55 _atomic_lock_stub(volatile long *lck) 56 { 57 return (0L); 58 } 59 60 /* 61 * This function is a stub for the spinlock function in libpthread. 62 */ 63 void 64 _spinlock_stub(spinlock_t *lck) 65 { 66 } 67 68 /* 69 * This function is a stub for the spinunlock function in libpthread. 70 */ 71 void 72 _spinunlock_stub(spinlock_t *lck) 73 { 74 } 75 76 /* 77 * This function is a stub for the debug spinlock function in libpthread. 78 */ 79 void 80 _spinlock_debug_stub(spinlock_t *lck, char *fname, int lineno) 81 { 82 } 83