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/* Copyright (C) 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky <schwidefsky@de.ibm.com>, 2003.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#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;
#define __arch_compare_and_exchange_8_acq(mem, newval, oldval) \
(abort (), 0)
#define __arch_compare_and_exchange_16_acq(mem, newval, oldval) \
(abort (), 0)
#define __arch_compare_and_exchange_32_acq(mem, newval, oldval) \
({ unsigned int *__mem = (unsigned int *) (mem); \
unsigned int __old = (unsigned int) (oldval); \
unsigned int __cmp = __old; \
__asm __volatile ("cs %0,%2,%1" \
: "+d" (__old), "=Q" (*__mem) \
: "d" (newval), "m" (*__mem) : "cc" ); \
__cmp != __old; })
#ifdef __s390x__
# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
({ unsigned long int *__mem = (unsigned long int *) (mem); \
unsigned long int __old = (unsigned long int) (oldval); \
unsigned long int __cmp = __old; \
__asm __volatile ("csg %0,%2,%1" \
: "+d" (__old), "=Q" (*__mem) \
: "d" (newval), "m" (*__mem) : "cc" ); \
__cmp != __old; })
#else
/* For 31 bit we do not really need 64-bit compare-and-exchange. We can
implement them by use of the csd instruction. The straightforward
implementation causes warnings so we skip the definition for now. */
# define __arch_compare_and_exchange_64_acq(mem, newval, oldval) \
(abort (), 0)
#endif
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