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
|
/* Atomic operations. sparc64 version.
Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2003.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <stdint.h>
typedef int8_t atomic8_t;
typedef uint8_t uatomic8_t;
typedef int_fast8_t atomic_fast8_t;
typedef uint_fast8_t uatomic_fast8_t;
typedef int16_t atomic16_t;
typedef uint16_t uatomic16_t;
typedef int_fast16_t atomic_fast16_t;
typedef uint_fast16_t uatomic_fast16_t;
typedef int32_t atomic32_t;
typedef uint32_t uatomic32_t;
typedef int_fast32_t atomic_fast32_t;
typedef uint_fast32_t uatomic_fast32_t;
typedef int64_t atomic64_t;
typedef uint64_t uatomic64_t;
typedef int_fast64_t atomic_fast64_t;
typedef uint_fast64_t uatomic_fast64_t;
typedef intptr_t atomicptr_t;
typedef uintptr_t uatomicptr_t;
typedef intmax_t atomic_max_t;
typedef uintmax_t uatomic_max_t;
#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
(abort (), 0)
#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
(abort (), 0)
#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
({ \
__typeof (*(mem)) __acev_tmp; \
__typeof (mem) __acev_mem = (mem); \
__asm __volatile ("cas [%4], %2, %0" \
: "=r" (__acev_tmp), "=m" (*__acev_mem) \
: "r" (oldval), "m" (*__acev_mem), "r" (__acev_mem), \
"0" (newval)); \
__acev_tmp; })
#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
({ \
__typeof (*(mem)) __acev_tmp; \
__typeof (mem) __acev_mem = (mem); \
__asm __volatile ("casx [%4], %2, %0" \
: "=r" (__acev_tmp), "=m" (*__acev_mem) \
: "r" ((long) (oldval)), "m" (*__acev_mem), \
"r" (__acev_mem), "0" ((long) (newval))); \
__acev_tmp; })
#define atomic_exchange(mem, newvalue) \
({ __typeof (*(mem)) __oldval, __val; \
__typeof (mem) __memp = (mem); \
__typeof (*(mem)) __value = (newvalue); \
\
if (sizeof (*(mem)) == 4) \
__asm ("swap %0, %1" \
: "=m" (*__memp), "=r" (__oldval) \
: "m" (*__memp), "1" (__value)); \
else \
{ \
__val = *__memp; \
do \
{ \
__oldval = __val; \
__val = atomic_compare_and_exchange_val_acq (__memp, __value, \
__oldval); \
} \
while (__builtin_expect (__val != __oldval, 0)); \
} \
__oldval; })
#define atomic_full_barrier() \
__asm __volatile ("membar #LoadLoad | #LoadStore" \
" | #StoreLoad | #StoreStore" : : : "memory")
#define atomic_read_barrier() \
__asm __volatile ("membar #LoadLoad | #LoadStore" : : : "memory")
#define atomic_write_barrier() \
__asm __volatile ("membar #StoreLoad | #StoreStore" : : : "memory")
|
