_spinlock_stub.c revision 278751
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. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30#include <sys/cdefs.h> 31__FBSDID("$FreeBSD: head/lib/libc/gen/_spinlock_stub.c 278751 2015-02-14 11:47:40Z kib $"); 32 33#include <stdio.h> 34 35#include "spinlock.h" 36#include "libc_private.h" 37 38long _atomic_lock_stub(volatile long *); 39void _spinlock_stub(spinlock_t *); 40void _spinunlock_stub(spinlock_t *); 41void _spinlock_debug_stub(spinlock_t *, char *, int); 42 43__weak_reference(_atomic_lock_stub, _atomic_lock); 44 45long 46_atomic_lock_stub(volatile long *lck __unused) 47{ 48 return (0L); 49} 50 51__weak_reference(_spinlock, _spinlock_debug); 52#pragma weak _spinlock 53void 54_spinlock(spinlock_t *lck) 55{ 56 57 ((void (*)(spinlock_t *lck))__libc_interposing[INTERPOS_spinlock]) 58 (lck); 59 60} 61 62#pragma weak _spinlock 63void 64_spinunlock(spinlock_t *lck) 65{ 66 67 ((void (*)(spinlock_t *lck))__libc_interposing[INTERPOS_spinunlock]) 68 (lck); 69 70} 71 72void 73__libc_spinlock_stub(spinlock_t *lck __unused) 74{ 75} 76 77void 78__libc_spinunlock_stub(spinlock_t *lck __unused) 79{ 80} 81