| /* Copyright (C) 2011-2014 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011. |
| |
| 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, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| /* The sub-architecture headers provide definitions for these macros |
| that work for "int" and "long" size values only: |
| |
| atomic_compare_and_exchange_val_acq() |
| atomic_exchange_acq() |
| atomic_exchange_and_add() |
| atomic_and_val() |
| atomic_or_val() |
| atomic_decrement_if_positive() [tilegx only] |
| |
| Here we provide generic definitions true for all Tilera chips. */ |
| |
| #include <stdint.h> |
| #include <features.h> |
| |
| 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; |
| |
| /* Barrier macro. */ |
| #define atomic_full_barrier() __sync_synchronize() |
| |
| /* APIs with "release" semantics. */ |
| #define atomic_compare_and_exchange_val_rel(mem, n, o) \ |
| ({ \ |
| atomic_full_barrier (); \ |
| atomic_compare_and_exchange_val_acq ((mem), (n), (o)); \ |
| }) |
| #define atomic_compare_and_exchange_bool_rel(mem, n, o) \ |
| ({ \ |
| atomic_full_barrier (); \ |
| atomic_compare_and_exchange_bool_acq ((mem), (n), (o)); \ |
| }) |
| #define atomic_exchange_rel(mem, n) \ |
| ({ \ |
| atomic_full_barrier (); \ |
| atomic_exchange_acq ((mem), (n)); \ |
| }) |
| |
| /* Various macros that should just be synonyms. */ |
| #define catomic_exchange_and_add atomic_exchange_and_add |
| #define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask))) |
| #define catomic_and atomic_and |
| #define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask))) |
| #define catomic_or atomic_or |
| |
| /* atomic_bit_test_set in terms of atomic_or_val. */ |
| #define atomic_bit_test_set(mem, bit) \ |
| ({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit)); \ |
| atomic_or_val ((mem), __att0_mask) & __att0_mask; }) |
| |
| /* |
| * This non-existent symbol is called for unsupporrted sizes, |
| * indicating a bug in the caller. |
| */ |
| extern int __atomic_error_bad_argument_size(void) |
| __attribute__ ((warning ("bad sizeof atomic argument"))); |