diff options
Diffstat (limited to 'sysdeps/x86_64/atomic-machine.h')
| -rw-r--r-- | sysdeps/x86_64/atomic-machine.h | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/sysdeps/x86_64/atomic-machine.h b/sysdeps/x86_64/atomic-machine.h index a5b86eb3ce..9d31c64962 100644 --- a/sysdeps/x86_64/atomic-machine.h +++ b/sysdeps/x86_64/atomic-machine.h @@ -1,4 +1,4 @@ -/* Copyright (C) 2002-2016 Free Software Foundation, Inc. +/* Copyright (C) 2002-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@redhat.com>, 2002. @@ -16,10 +16,12 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -#include <stdint.h> -#include <tls.h> /* For tcbhead_t. */ -#include <libc-internal.h> +#ifndef _X86_64_ATOMIC_MACHINE_H +#define _X86_64_ATOMIC_MACHINE_H 1 +#include <stdint.h> +#include <tls.h> /* For tcbhead_t. */ +#include <libc-pointer-arith.h> /* For cast_to_integer. */ typedef int8_t atomic8_t; typedef uint8_t uatomic8_t; @@ -57,6 +59,7 @@ typedef uintmax_t uatomic_max_t; #define __HAVE_64B_ATOMICS 1 #define USE_ATOMIC_COMPILER_BUILTINS 1 +#define ATOMIC_EXCHANGE_USES_CAS 0 #define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ __sync_val_compare_and_swap (mem, oldval, newval) @@ -475,3 +478,5 @@ typedef uintmax_t uatomic_max_t; __asm __volatile (LOCK_PREFIX "orl $0, (%%rsp)" ::: "memory") #define atomic_read_barrier() __asm ("" ::: "memory") #define atomic_write_barrier() __asm ("" ::: "memory") + +#endif /* atomic-machine.h */ |