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87 lines
3.3 KiB
C
87 lines
3.3 KiB
C
/* Copyright (C) 2011 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Chris Metcalf <cmetcalf@tilera.com>, 2011.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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/* The sub-architecture headers provide definitions for these macros
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that work for "int" and "long" size values only:
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atomic_compare_and_exchange_val_acq()
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atomic_exchange_acq()
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atomic_exchange_and_add()
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atomic_and_val()
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atomic_or_val()
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atomic_decrement_if_positive() [tilegx only]
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Here we provide generic definitions true for all Tilera chips. */
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#include <stdint.h>
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#include <features.h>
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typedef int32_t atomic32_t;
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typedef uint32_t uatomic32_t;
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typedef int_fast32_t atomic_fast32_t;
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typedef uint_fast32_t uatomic_fast32_t;
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typedef int64_t atomic64_t;
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typedef uint64_t uatomic64_t;
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typedef int_fast64_t atomic_fast64_t;
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typedef uint_fast64_t uatomic_fast64_t;
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typedef intptr_t atomicptr_t;
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typedef uintptr_t uatomicptr_t;
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typedef intmax_t atomic_max_t;
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typedef uintmax_t uatomic_max_t;
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/* Barrier macro. */
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#define atomic_full_barrier() __sync_synchronize()
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/* APIs with "release" semantics. */
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#define atomic_compare_and_exchange_val_rel(mem, n, o) \
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({ \
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atomic_full_barrier (); \
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atomic_compare_and_exchange_val_acq ((mem), (n), (o)); \
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})
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#define atomic_compare_and_exchange_bool_rel(mem, n, o) \
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({ \
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atomic_full_barrier (); \
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atomic_compare_and_exchange_bool_acq ((mem), (n), (o)); \
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})
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#define atomic_exchange_rel(mem, n) \
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({ \
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atomic_full_barrier (); \
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atomic_exchange_acq ((mem), (n)); \
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})
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/* Various macros that should just be synonyms. */
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#define catomic_exchange_and_add atomic_exchange_and_add
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#define atomic_and(mem, mask) ((void) atomic_and_val ((mem), (mask)))
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#define catomic_and atomic_and
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#define atomic_or(mem, mask) ((void) atomic_or_val ((mem), (mask)))
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#define catomic_or atomic_or
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/* atomic_bit_test_set in terms of atomic_or_val. */
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#define atomic_bit_test_set(mem, bit) \
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({ __typeof (*(mem)) __att0_mask = ((__typeof (*(mem))) 1 << (bit)); \
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atomic_or_val ((mem), __att0_mask) & __att0_mask; })
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/*
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* This non-existent symbol is called for unsupporrted sizes,
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* indicating a bug in the caller.
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*/
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extern int __atomic_error_bad_argument_size(void)
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__attribute__ ((warning ("bad sizeof atomic argument")));
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