b6cbf7203b
This patch imports the unmodified current version of NetBSD libc. The NetBSD includes are in /nbsd_include, while the libc code itself is split between lib/nbsd_libc and common/lib/libc.
67 lines
2.5 KiB
ArmAsm
67 lines
2.5 KiB
ArmAsm
/* $NetBSD: atomic_cas.S,v 1.7 2011/01/15 07:31:11 matt Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Jason R. Thorpe.
|
|
*
|
|
* 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.
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``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 FOUNDATION OR CONTRIBUTORS
|
|
* 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 "atomic_op_asm.h"
|
|
|
|
__RCSID("$NetBSD: atomic_cas.S,v 1.7 2011/01/15 07:31:11 matt Exp $")
|
|
|
|
.text
|
|
ENTRY(_atomic_cas_32)
|
|
1: lwarx %r10,0,%r3
|
|
cmpw %r10,%r4
|
|
bne- 2f
|
|
stwcx. %r5,0,%r3
|
|
bne- 1b
|
|
2: mr %r3,%r10
|
|
blr
|
|
END(_atomic_cas_32)
|
|
|
|
ATOMIC_OP_ALIAS(atomic_cas_32,_atomic_cas_32)
|
|
ATOMIC_OP_ALIAS(atomic_cas_uint,_atomic_cas_32)
|
|
STRONG_ALIAS(_atomic_cas_uint,_atomic_cas_32)
|
|
#if !defined(_LP64)
|
|
ATOMIC_OP_ALIAS(atomic_cas_ulong,_atomic_cas_32)
|
|
STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_32)
|
|
ATOMIC_OP_ALIAS(atomic_cas_ptr,_atomic_cas_32)
|
|
STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_32)
|
|
#endif
|
|
|
|
ATOMIC_OP_ALIAS(atomic_cas_32_ni,_atomic_cas_32)
|
|
STRONG_ALIAS(_atomic_cas_32_ni,_atomic_cas_32)
|
|
ATOMIC_OP_ALIAS(atomic_cas_uint_ni,_atomic_cas_32)
|
|
STRONG_ALIAS(_atomic_cas_uint_ni,_atomic_cas_32)
|
|
#if !defined(_LP64)
|
|
ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_32)
|
|
STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_32)
|
|
ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_32)
|
|
STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_32)
|
|
#endif
|