Annotation of src/common/lib/libc/arch/powerpc/atomic/atomic_cas.S, Revision 1.2.4.3
1.2.4.3 ! matt 1: /* atomic_cas.S,v 1.2.4.2 2008/01/09 01:21:00 matt Exp */
1.2.4.2 matt 2:
3: /*-
1.2.4.3 ! matt 4: * Copyright (c) 2007, 2008 The NetBSD Foundation, Inc.
1.2.4.2 matt 5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by Jason R. Thorpe.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the NetBSD
21: * Foundation, Inc. and its contributors.
22: * 4. Neither the name of The NetBSD Foundation nor the names of its
23: * contributors may be used to endorse or promote products derived
24: * from this software without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
38:
39: #include "atomic_op_asm.h"
40:
41: .text
42:
43: ENTRY_NOPROFILE(_atomic_cas_32)
1.2.4.3 ! matt 44: 1: lwarx %r10,0,%r3
! 45: cmpw %r10,%r4
1.2.4.2 matt 46: bne- 2f
1.2.4.3 ! matt 47: stwcx. %r5,0,%r3
1.2.4.2 matt 48: bne- 1b
1.2.4.3 ! matt 49: 2: mr %r3,%r10
1.2.4.2 matt 50: blr
1.2.4.3 ! matt 51:
1.2.4.2 matt 52: ATOMIC_OP_ALIAS(atomic_cas_32,_atomic_cas_32)
53: ATOMIC_OP_ALIAS(atomic_cas_uint,_atomic_cas_32)
54: STRONG_ALIAS(_atomic_cas_uint,_atomic_cas_32)
55: #if !defined(_LP64)
56: ATOMIC_OP_ALIAS(atomic_cas_ulong,_atomic_cas_32)
57: STRONG_ALIAS(_atomic_cas_ulong,_atomic_cas_32)
58: ATOMIC_OP_ALIAS(atomic_cas_ptr,_atomic_cas_32)
59: STRONG_ALIAS(_atomic_cas_ptr,_atomic_cas_32)
60: #endif
1.2.4.3 ! matt 61:
! 62: ATOMIC_OP_ALIAS(atomic_cas_32_ni,_atomic_cas_32)
! 63: STRONG_ALIAS(_atomic_cas_32_ni,_atomic_cas_32)
! 64: ATOMIC_OP_ALIAS(atomic_cas_uint_ni,_atomic_cas_32)
! 65: STRONG_ALIAS(_atomic_cas_uint_ni,_atomic_cas_32)
! 66: #if !defined(_LP64)
! 67: ATOMIC_OP_ALIAS(atomic_cas_ulong_ni,_atomic_cas_32)
! 68: STRONG_ALIAS(_atomic_cas_ulong_ni,_atomic_cas_32)
! 69: ATOMIC_OP_ALIAS(atomic_cas_ptr_ni,_atomic_cas_32)
! 70: STRONG_ALIAS(_atomic_cas_ptr_ni,_atomic_cas_32)
! 71: #endif
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