1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
|
/*
* Copyright (c) 2003 Hewlett-Packard Development Company, L.P.
* Copyright (c) 2009-2021 Ivan Maidanski
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
/* Some ARM slide set, if it has been read correctly, claims that Loads */
/* followed by either a Load or a Store are ordered, but nothing else. */
/* It is assumed that Windows interrupt handlers clear the LL/SC flag. */
/* Unaligned accesses are not guaranteed to be atomic. */
#include "../all_aligned_atomic_load_store.h"
#define AO_T_IS_INT
#ifndef AO_ASSUME_WINDOWS98
/* CAS is always available */
# define AO_ASSUME_WINDOWS98
#endif
#include "common32_defs.h"
/* If only a single processor is used, we can define AO_UNIPROCESSOR. */
#ifdef AO_UNIPROCESSOR
AO_INLINE void AO_nop_full(void)
{
AO_compiler_barrier();
}
# define AO_HAVE_nop_full
#else
/* AO_nop_full() is emulated using AO_test_and_set_full(). */
#endif
#ifndef AO_HAVE_test_and_set_full
# include "../test_and_set_t_is_ao_t.h"
/* AO_test_and_set_full() is emulated. */
#endif
#if _M_ARM >= 7 && !defined(AO_NO_DOUBLE_CAS)
# include "../standard_ao_double_t.h"
/* These intrinsics are supposed to use LDREXD/STREXD. */
# pragma intrinsic (_InterlockedCompareExchange64)
# pragma intrinsic (_InterlockedCompareExchange64_acq)
# pragma intrinsic (_InterlockedCompareExchange64_nf)
# pragma intrinsic (_InterlockedCompareExchange64_rel)
AO_INLINE int
AO_double_compare_and_swap(volatile AO_double_t *addr,
AO_double_t old_val, AO_double_t new_val)
{
AO_ASSERT_ADDR_ALIGNED(addr);
return (double_ptr_storage)_InterlockedCompareExchange64_nf(
(__int64 volatile *)addr,
new_val.AO_whole /* exchange */,
old_val.AO_whole) == old_val.AO_whole;
}
# define AO_HAVE_double_compare_and_swap
AO_INLINE int
AO_double_compare_and_swap_acquire(volatile AO_double_t *addr,
AO_double_t old_val, AO_double_t new_val)
{
AO_ASSERT_ADDR_ALIGNED(addr);
return (double_ptr_storage)_InterlockedCompareExchange64_acq(
(__int64 volatile *)addr,
new_val.AO_whole /* exchange */,
old_val.AO_whole) == old_val.AO_whole;
}
# define AO_HAVE_double_compare_and_swap_acquire
AO_INLINE int
AO_double_compare_and_swap_release(volatile AO_double_t *addr,
AO_double_t old_val, AO_double_t new_val)
{
AO_ASSERT_ADDR_ALIGNED(addr);
return (double_ptr_storage)_InterlockedCompareExchange64_rel(
(__int64 volatile *)addr,
new_val.AO_whole /* exchange */,
old_val.AO_whole) == old_val.AO_whole;
}
# define AO_HAVE_double_compare_and_swap_release
AO_INLINE int
AO_double_compare_and_swap_full(volatile AO_double_t *addr,
AO_double_t old_val, AO_double_t new_val)
{
AO_ASSERT_ADDR_ALIGNED(addr);
return (double_ptr_storage)_InterlockedCompareExchange64(
(__int64 volatile *)addr,
new_val.AO_whole /* exchange */,
old_val.AO_whole) == old_val.AO_whole;
}
# define AO_HAVE_double_compare_and_swap_full
#endif /* _M_ARM >= 7 && !AO_NO_DOUBLE_CAS */
|