mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
a90695507e
__arch_compare_and_exchange_val_64_acq): Add "memory" clobber. 2008-11-03 Michael Matz <matz@suse.de> * sysdeps/s390/bits/atomic.h (__arch_compare_and_exchange_val_32_acq, __arch_compare_and_exchange_val_64_acq): Add "memory" clobber.
77 lines
2.8 KiB
C
77 lines
2.8 KiB
C
/* 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_val_8_acq(mem, newval, oldval) \
|
|
(abort (), (__typeof (*mem)) 0)
|
|
|
|
#define __arch_compare_and_exchange_val_16_acq(mem, newval, oldval) \
|
|
(abort (), (__typeof (*mem)) 0)
|
|
|
|
#define __arch_compare_and_exchange_val_32_acq(mem, newval, oldval) \
|
|
({ __typeof (mem) __archmem = (mem); \
|
|
__typeof (*mem) __archold = (oldval); \
|
|
__asm __volatile ("cs %0,%2,%1" \
|
|
: "+d" (__archold), "=Q" (*__archmem) \
|
|
: "d" (newval), "m" (*__archmem) : "cc", "memory" ); \
|
|
__archold; })
|
|
|
|
#ifdef __s390x__
|
|
# define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
|
|
({ __typeof (mem) __archmem = (mem); \
|
|
__typeof (*mem) __archold = (oldval); \
|
|
__asm __volatile ("csg %0,%2,%1" \
|
|
: "+d" (__archold), "=Q" (*__archmem) \
|
|
: "d" ((long) (newval)), "m" (*__archmem) : "cc", "memory" ); \
|
|
__archold; })
|
|
#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_val_64_acq(mem, newval, oldval) \
|
|
(abort (), (__typeof (*mem)) 0)
|
|
#endif
|