projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 2011-2016 Free Software Foundation, Inc. |
| 63d143a2 CM |
2 | This file is part of the GNU C Library. |
| 3 | Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. | |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| ab84e3ff PE |
16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ | |
| 63d143a2 CM |
18 | |
| 19 | /* The sub-architecture headers provide definitions for these macros | |
| 20 | that work for "int" and "long" size values only: | |
| 21 | ||
| 22 | atomic_compare_and_exchange_val_acq() | |
| 23 | atomic_exchange_acq() | |
| 24 | atomic_exchange_and_add() | |
| 25 | atomic_and_val() | |
| 26 | atomic_or_val() | |
| 27 | atomic_decrement_if_positive() [tilegx only] | |
| 28 | ||
| 29 | Here we provide generic definitions true for all Tilera chips. */ | |
| 30 | ||
| 31 | #include <stdint.h> | |
| 32 | #include <features.h> | |
| 33 | ||
| 34 | typedef int32_t atomic32_t; | |
| 35 | typedef uint32_t uatomic32_t; | |
| 36 | typedef int_fast32_t atomic_fast32_t; | |
| 37 | typedef uint_fast32_t uatomic_fast32_t; | |
| 38 | ||
| 39 | typedef int64_t atomic64_t; | |
| 40 | typedef uint64_t uatomic64_t; | |
| 41 | typedef int_fast64_t atomic_fast64_t; | |
| 42 | typedef uint_fast64_t uatomic_fast64_t; | |
| 43 | ||
| 44 | typedef intptr_t atomicptr_t; | |
| 45 | typedef uintptr_t uatomicptr_t; | |
| 46 | typedef intmax_t atomic_max_t; | |
| 47 | typedef uintmax_t uatomic_max_t; | |
| 48 | ||
| 49 | /* Barrier macro. */ | |
| 50 | #define atomic_full_barrier() __sync_synchronize() | |
| 51 | ||
| 52 | /* APIs with "release" semantics. */ | |
| 53 | #define atomic_compare_and_exchange_val_rel(mem, n, o) \ | |
| 54 | ({ \ | |
| 55 | atomic_full_barrier (); \ | |
| 56 | atomic_compare_and_exchange_val_acq ((mem), (n), (o)); \ | |
| 57 | }) | |
| 63d143a2 CM |
58 | #define atomic_exchange_rel(mem, n) \ |
| 59 | ({ \ | |
| 60 | atomic_full_barrier (); \ | |
| 61 | atomic_exchange_acq ((mem), (n)); \ | |
| 62 | }) | |
| 63 | ||
| 64 | /* Various macros that should just be synonyms. */ | |
| 65 | #define catomic_exchange_and_add atomic_exchange_and_add | |
| 66 | #define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask))) | |
| 67 | #define catomic_and atomic_and | |
| 68 | #define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask))) | |
| 69 | #define catomic_or atomic_or | |
| 70 | ||
| 71 | /* atomic_bit_test_set in terms of atomic_or_val. */ | |
| 72 | #define atomic_bit_test_set(mem, bit) \ | |
| 73 | ({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit)); \ | |
| 74 | atomic_or_val ((mem), __att0_mask) & __att0_mask; }) | |
| 75 | ||
| 76 | /* | |
| 77 | * This non-existent symbol is called for unsupporrted sizes, | |
| 78 | * indicating a bug in the caller. | |
| 79 | */ | |
| 80 | extern int __atomic_error_bad_argument_size(void) | |
| 81 | __attribute__ ((warning ("bad sizeof atomic argument"))); |