| xf.li | bdd93d5 | 2023-05-12 07:10:14 -0700 | [diff] [blame^] | 1 | /* Copyright (C) 2011-2016 Free Software Foundation, Inc. |
| 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 |
| 16 | License along with the GNU C Library. If not, see |
| 17 | <http://www.gnu.org/licenses/>. */ |
| 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 | }) |
| 58 | #define atomic_compare_and_exchange_bool_rel(mem, n, o) \ |
| 59 | ({ \ |
| 60 | atomic_full_barrier (); \ |
| 61 | atomic_compare_and_exchange_bool_acq ((mem), (n), (o)); \ |
| 62 | }) |
| 63 | #define atomic_exchange_rel(mem, n) \ |
| 64 | ({ \ |
| 65 | atomic_full_barrier (); \ |
| 66 | atomic_exchange_acq ((mem), (n)); \ |
| 67 | }) |
| 68 | |
| 69 | /* Various macros that should just be synonyms. */ |
| 70 | #define catomic_exchange_and_add atomic_exchange_and_add |
| 71 | #define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask))) |
| 72 | #define catomic_and atomic_and |
| 73 | #define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask))) |
| 74 | #define catomic_or atomic_or |
| 75 | |
| 76 | /* atomic_bit_test_set in terms of atomic_or_val. */ |
| 77 | #define atomic_bit_test_set(mem, bit) \ |
| 78 | ({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit)); \ |
| 79 | atomic_or_val ((mem), __att0_mask) & __att0_mask; }) |
| 80 | |
| 81 | /* |
| 82 | * This non-existent symbol is called for unsupporrted sizes, |
| 83 | * indicating a bug in the caller. |
| 84 | */ |
| 85 | extern int __atomic_error_bad_argument_size(void) |
| 86 | __attribute__ ((warning ("bad sizeof atomic argument"))); |