1 /* Copyright (C) 2003-2014 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
19 #include <ia64intrin.h>
21 typedef int8_t atomic8_t;
22 typedef uint8_t uatomic8_t;
23 typedef int_fast8_t atomic_fast8_t;
24 typedef uint_fast8_t uatomic_fast8_t;
26 typedef int16_t atomic16_t;
27 typedef uint16_t uatomic16_t;
28 typedef int_fast16_t atomic_fast16_t;
29 typedef uint_fast16_t uatomic_fast16_t;
31 typedef int32_t atomic32_t;
32 typedef uint32_t uatomic32_t;
33 typedef int_fast32_t atomic_fast32_t;
34 typedef uint_fast32_t uatomic_fast32_t;
36 typedef int64_t atomic64_t;
37 typedef uint64_t uatomic64_t;
38 typedef int_fast64_t atomic_fast64_t;
39 typedef uint_fast64_t uatomic_fast64_t;
41 typedef intptr_t atomicptr_t;
42 typedef uintptr_t uatomicptr_t;
43 typedef intmax_t atomic_max_t;
44 typedef uintmax_t uatomic_max_t;
47 #define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \
50 #define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \
53 #define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \
54 (!__sync_bool_compare_and_swap ((mem), (int) (long) (oldval), \
55 (int) (long) (newval)))
57 #define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval) \
58 (!__sync_bool_compare_and_swap ((mem), (long) (oldval), \
61 #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
62 (abort (), (__typeof (*mem)) 0)
64 #define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
65 (abort (), (__typeof (*mem)) 0)
67 #define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
68 __sync_val_compare_and_swap ((mem), (int) (long) (oldval), \
69 (int) (long) (newval))
71 #define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
72 __sync_val_compare_and_swap ((mem), (long) (oldval), (long) (newval))
74 /* Atomically store newval and return the old value. */
75 #define atomic_exchange_acq(mem, value) \
76 __sync_lock_test_and_set (mem, value)
78 #define atomic_exchange_rel(mem, value) \
79 (__sync_synchronize (), __sync_lock_test_and_set (mem, value))
81 #define atomic_exchange_and_add(mem, value) \
82 ({ __typeof (*mem) __result; \
83 __result = __sync_fetch_and_add ((mem), (int) (value)); \
86 #define atomic_decrement_if_positive(mem) \
87 ({ __typeof (*mem) __oldval, __val; \
88 __typeof (mem) __memp = (mem); \
94 if (__builtin_expect (__val <= 0, 0)) \
96 __val = atomic_compare_and_exchange_val_acq (__memp, __oldval - 1, \
99 while (__builtin_expect (__val != __oldval, 0)); \
102 #define atomic_bit_test_set(mem, bit) \
103 ({ __typeof (*mem) __oldval, __val; \
104 __typeof (mem) __memp = (mem); \
105 __typeof (*mem) __mask = ((__typeof (*mem)) 1 << (bit)); \
111 __val = atomic_compare_and_exchange_val_acq (__memp, \
115 while (__builtin_expect (__val != __oldval, 0)); \
116 __oldval & __mask; })
118 #define atomic_full_barrier() __sync_synchronize ()