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/* Copyright (C) 2010-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Maxim Kuvyrkov <maxim@codesourcery.com>, 2010.
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/>. */
#ifndef _OR1K_BITS_ATOMIC_H
#define _OR1K_BITS_ATOMIC_H
#include <stdint.h>
typedef int8_t atomic8_t;
typedef uint8_t uatomic8_t;
typedef int_fast8_t atomic_fast8_t;
typedef uint_fast8_t uatomic_fast8_t;
typedef int16_t atomic16_t;
typedef uint16_t uatomic16_t;
typedef int_fast16_t atomic_fast16_t;
typedef uint_fast16_t uatomic_fast16_t;
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;
#ifndef atomic_full_barrier
# define atomic_full_barrier() __asm__ ("" ::: "memory")
#endif
#ifndef atomic_read_barrier
# define atomic_read_barrier() atomic_full_barrier ()
#endif
#ifndef atomic_write_barrier
# define atomic_write_barrier() atomic_full_barrier ()
#endif
#define atomic_exchange_acq(mem, newval) \
({ __typeof (newval) val; \
\
__asm__ volatile ( \
"1: l.lwa %0, 0(%1) \n" \
" l.swa 0(%1), %2 \n" \
" l.bnf 1b \n" \
" l.nop \n" \
: "=&r"(val) \
: "r"(mem), "r"(newval) \
: "cc", "memory"); \
val; })
#define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \
({ __typeof (newval) val; \
\
__asm__ volatile ( \
"1: l.lwa %0, 0(%1) \n" \
" l.sfeq %0, %2 \n" \
" l.bnf 2f \n" \
" l.nop \n" \
" l.swa 0(%1), %3 \n" \
" l.bnf 1b \n" \
" l.nop \n" \
"2: \n" \
: "=&r"(val) \
: "r"(mem), "r"(oldval), "r"(newval) \
: "cc", "memory"); \
val; })
#endif
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