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serginhofr |
/* Low-level functions for atomic operations. Mips version.
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Copyright (C) 2005 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, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#ifndef _LINUX_RISCV_BITS_ATOMIC_H
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#define _LINUX_RISCV_BITS_ATOMIC_H 1
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#include_next <bits/atomic.h>
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#ifndef __riscv_atomic
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#include <sys/syscall.h>
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#include <sysdep.h>
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#define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \
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(abort (), (__typeof (*mem)) 0)
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#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
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(abort (), (__typeof (*mem)) 0)
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/* The only basic operation needed is compare and exchange. */
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#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
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({ \
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INTERNAL_SYSCALL_DECL (__err); \
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(__typeof (*mem)) INTERNAL_SYSCALL (sysriscv, __err, 4, \
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RISCV_ATOMIC_CMPXCHG, mem, oldval, newval); \
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})
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#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
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({ \
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INTERNAL_SYSCALL_DECL (__err); \
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(__typeof (*mem)) INTERNAL_SYSCALL (sysriscv, __err, 4, \
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RISCV_ATOMIC_CMPXCHG64, mem, oldval, newval); \
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})
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#endif /* __riscv_atomic */
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#endif /* bits/atomic.h */
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