1 /*
2 * Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * furnished to do so, subject to the following conditions:
10 *
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
13 *
14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20 * SOFTWARE.
21 */
22
23 /*
24 * Definitions for architectures on which loads and stores of AO_t are
25 * atomic for all legal alignments.
26 */
27
28 AO_INLINE AO_t
AO_load(const volatile AO_t * addr)29 AO_load(const volatile AO_t *addr)
30 {
31 /* Cast away the volatile for architectures like IA64 where */
32 /* volatile adds barrier semantics. */
33 return (*(const AO_t *)addr);
34 }
35
36 #define AO_HAVE_load
37
38 AO_INLINE void
AO_store(volatile AO_t * addr,AO_t new_val)39 AO_store(volatile AO_t *addr, AO_t new_val)
40 {
41 (*(AO_t *)addr) = new_val;
42 }
43
44 #define AO_HAVE_store
45