diff options
Diffstat (limited to 'lib/libc_r/arch/sparc64/_atomic_lock.S')
| -rw-r--r-- | lib/libc_r/arch/sparc64/_atomic_lock.S | 45 |
1 files changed, 0 insertions, 45 deletions
diff --git a/lib/libc_r/arch/sparc64/_atomic_lock.S b/lib/libc_r/arch/sparc64/_atomic_lock.S deleted file mode 100644 index ce931df..0000000 --- a/lib/libc_r/arch/sparc64/_atomic_lock.S +++ /dev/null @@ -1,45 +0,0 @@ -/*- - * Copyright (c) 2002 Dag-Erling Coïdan Smørgrav - * 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 - * in this position and unchanged. - * 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. - * 3. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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 <machine/asm.h> - -__FBSDID("$FreeBSD$"); - -/* - * long _atomic_lock(long *) - * - * Atomically acquire a lock by storing a non-zero value in its - * location, provided it is not already locked. Note that we only use - * the first byte of the location provided. - */ -ENTRY(_atomic_lock) - ldstub [%o0], %o1 - membar #LoadLoad | #StoreStore - retl - mov %o1, %o0 -END(_atomic_lock) |
