diff options
Diffstat (limited to 'sysdeps/x86_64/bits/atomic.h')
| -rw-r--r-- | sysdeps/x86_64/bits/atomic.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/x86_64/bits/atomic.h b/sysdeps/x86_64/bits/atomic.h index 4d19ef0bb4..99dfb50295 100644 --- a/sysdeps/x86_64/bits/atomic.h +++ b/sysdeps/x86_64/bits/atomic.h @@ -55,6 +55,12 @@ typedef uintmax_t uatomic_max_t; # endif #endif +#define __HAVE_64B_ATOMICS 1 +#if __GNUC_PREREQ (4, 7) +#define USE_ATOMIC_COMPILER_BUILTINS 1 +#else +#define USE_ATOMIC_COMPILER_BUILTINS 0 +#endif #define atomic_compare_and_exchange_val_acq(mem, newval, oldval) \ __sync_val_compare_and_swap (mem, oldval, newval) |