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
|
/* Copyright (c) 2017-2021, ARM Limited. All rights reserved.
* Copyright (c) 2017-2018, Linaro Limited
* All rights reserved.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
#ifndef PLATFORM_LINUXGENERIC_ARCH_ARM_ODP_ATOMIC_H
#define PLATFORM_LINUXGENERIC_ARCH_ARM_ODP_ATOMIC_H
#ifndef PLATFORM_LINUXGENERIC_ARCH_ARM_ODP_CPU_H
#error This file should not be included directly, please include odp_cpu.h
#endif
#include <odp_types_internal.h>
#include <limits.h>
#ifdef CONFIG_DMBSTR
#define atomic_store_release(loc, val, ro) \
do { \
_odp_release_barrier(ro); \
__atomic_store_n(loc, val, __ATOMIC_RELAXED); \
} while (0)
#else
#define atomic_store_release(loc, val, ro) \
__atomic_store_n(loc, val, __ATOMIC_RELEASE)
#endif /* CONFIG_DMBSTR */
/** Atomic bit set operations with memory ordering */
#if __GCC_ATOMIC_LLONG_LOCK_FREE == 2 && \
__SIZEOF_LONG_LONG__ != __SIZEOF_LONG__
typedef unsigned long long bitset_t;
#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_LONG_LONG__)
#elif __GCC_ATOMIC_LONG_LOCK_FREE == 2 && __SIZEOF_LONG__ != __SIZEOF_INT__
typedef unsigned long bitset_t;
#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_LONG__)
#elif __GCC_ATOMIC_INT_LOCK_FREE == 2
typedef unsigned int bitset_t;
#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_INT__)
#else
/* Target does not support lock-free atomic operations */
typedef unsigned int bitset_t;
#define ATOM_BITSET_SIZE (CHAR_BIT * __SIZEOF_INT__)
#endif
#if ATOM_BITSET_SIZE <= 32
static inline bitset_t bitset_mask(uint32_t bit)
{
return 1UL << bit;
}
#elif ATOM_BITSET_SIZE <= 64
static inline bitset_t bitset_mask(uint32_t bit)
{
return 1ULL << bit;
}
#elif ATOM_BITSET_SIZE <= 128
static inline bitset_t bitset_mask(uint32_t bit)
{
if (bit < 64)
return 1ULL << bit;
else
return (_odp_u128_t)(1ULL << (bit - 64)) << 64;
}
#else
#error Unsupported size of bit sets (ATOM_BITSET_SIZE)
#endif
static inline bitset_t atom_bitset_load(bitset_t *bs, int mo)
{
return __atomic_load_n(bs, mo);
}
static inline void atom_bitset_set(bitset_t *bs, uint32_t bit, int mo)
{
(void)__atomic_fetch_or(bs, bitset_mask(bit), mo);
}
static inline void atom_bitset_clr(bitset_t *bs, uint32_t bit, int mo)
{
(void)__atomic_fetch_and(bs, ~bitset_mask(bit), mo);
}
static inline bitset_t atom_bitset_xchg(bitset_t *bs, bitset_t neu, int mo)
{
return __atomic_exchange_n(bs, neu, mo);
}
static inline bitset_t atom_bitset_cmpxchg(bitset_t *bs, bitset_t *old,
bitset_t neu, bool weak,
int mo_success, int mo_failure)
{
return __atomic_compare_exchange_n(bs, old, neu, weak, mo_success,
mo_failure);
}
#endif /* PLATFORM_LINUXGENERIC_ARCH_ARM_ODP_ATOMIC_H */
|
