2 * Copyright (c) 2007 Marcel Moolenaar
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 #include <machine/asm.h>
34 * uint32_t atomic_cas_32(volatile uint32_t *p, uint32_t cmp, uint32_t v)
36 ENTRY(atomic_cas_32, 3)
39 cmpxchg4.acq r8 = [r32], r34, ar.ccv
45 * uint64_t atomic_cas_64(volatile uint64_t *p, uint64_t cmp, uint64_t v)
47 ENTRY(atomic_cas_64, 3)
50 cmpxchg8.acq r8 = [r32], r34, ar.ccv
56 * uint64_t atomic_add_64_nv(volatile uint64_t *p, uint64_t v)
58 ENTRY(atomic_add_64_nv, 2)
65 cmpxchg8.acq r17 = [r32], r8, ar.ccv
67 cmp.eq p6, p7 = r16, r17
73 * uint8_t atomic_or_8_nv(volatile uint8_t *p, uint8_t v)
75 ENTRY(atomic_or_8_nv, 2)
82 cmpxchg1.acq r17 = [r32], r8, ar.ccv
84 cmp.eq p6, p7 = r16, r17
89 ENTRY(membar_producer, 0)