mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 21:10:07 +00:00
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
/* Copyright (C) 2003-2023 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
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
|
|
<https://www.gnu.org/licenses/>. */
|
|
|
|
#include <ia64intrin.h>
|
|
|
|
#define __HAVE_64B_ATOMICS 1
|
|
#define USE_ATOMIC_COMPILER_BUILTINS 0
|
|
|
|
/* XXX Is this actually correct? */
|
|
#define ATOMIC_EXCHANGE_USES_CAS 0
|
|
|
|
|
|
#define __arch_compare_and_exchange_bool_8_acq(mem, newval, oldval) \
|
|
(abort (), 0)
|
|
|
|
#define __arch_compare_and_exchange_bool_16_acq(mem, newval, oldval) \
|
|
(abort (), 0)
|
|
|
|
#define __arch_compare_and_exchange_bool_32_acq(mem, newval, oldval) \
|
|
(!__sync_bool_compare_and_swap ((mem), (int) (long) (oldval), \
|
|
(int) (long) (newval)))
|
|
|
|
#define __arch_compare_and_exchange_bool_64_acq(mem, newval, oldval) \
|
|
(!__sync_bool_compare_and_swap ((mem), (long) (oldval), \
|
|
(long) (newval)))
|
|
|
|
#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) \
|
|
__sync_val_compare_and_swap ((mem), (int) (long) (oldval), \
|
|
(int) (long) (newval))
|
|
|
|
#define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \
|
|
__sync_val_compare_and_swap ((mem), (long) (oldval), (long) (newval))
|
|
|
|
/* Atomically store newval and return the old value. */
|
|
#define atomic_exchange_acq(mem, value) \
|
|
__sync_lock_test_and_set (mem, value)
|
|
|
|
#define atomic_exchange_rel(mem, value) \
|
|
(__sync_synchronize (), __sync_lock_test_and_set (mem, value))
|
|
|
|
#define atomic_exchange_and_add(mem, value) \
|
|
__sync_fetch_and_add ((mem), (value))
|
|
|
|
#define atomic_decrement_if_positive(mem) \
|
|
({ __typeof (*mem) __oldval, __val; \
|
|
__typeof (mem) __memp = (mem); \
|
|
\
|
|
__val = (*__memp); \
|
|
do \
|
|
{ \
|
|
__oldval = __val; \
|
|
if (__builtin_expect (__val <= 0, 0)) \
|
|
break; \
|
|
__val = atomic_compare_and_exchange_val_acq (__memp, __oldval - 1, \
|
|
__oldval); \
|
|
} \
|
|
while (__builtin_expect (__val != __oldval, 0)); \
|
|
__oldval; })
|
|
|
|
#define atomic_bit_test_set(mem, bit) \
|
|
({ __typeof (*mem) __oldval, __val; \
|
|
__typeof (mem) __memp = (mem); \
|
|
__typeof (*mem) __mask = ((__typeof (*mem)) 1 << (bit)); \
|
|
\
|
|
__val = (*__memp); \
|
|
do \
|
|
{ \
|
|
__oldval = __val; \
|
|
__val = atomic_compare_and_exchange_val_acq (__memp, \
|
|
__oldval | __mask, \
|
|
__oldval); \
|
|
} \
|
|
while (__builtin_expect (__val != __oldval, 0)); \
|
|
__oldval & __mask; })
|
|
|
|
#define atomic_full_barrier() __sync_synchronize ()
|