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1c48da52bc
Switch m68k to builtin atomics. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
36 lines
1.2 KiB
C
36 lines
1.2 KiB
C
/* Copyright (C) 2010-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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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<https://www.gnu.org/licenses/>. */
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#ifndef _ATOMIC_MACHINE_H
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#define _ATOMIC_MACHINE_H 1
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#include <sysdep.h>
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/* Coldfire has no atomic compare-and-exchange operation, but the
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kernel provides userspace atomicity operations. Use them. */
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#define __HAVE_64B_ATOMICS 0
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#define USE_ATOMIC_COMPILER_BUILTINS 1
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/* XXX Is this actually correct? */
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#define ATOMIC_EXCHANGE_USES_CAS 1
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# define atomic_full_barrier() \
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(INTERNAL_SYSCALL_CALL (atomic_barrier), (void) 0)
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#endif
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