diff options
Diffstat (limited to 'sysdeps/s390')
| -rw-r--r-- | sysdeps/s390/bits/atomic.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/s390/bits/atomic.h b/sysdeps/s390/bits/atomic.h index 6824165779..b809b5efaa 100644 --- a/sysdeps/s390/bits/atomic.h +++ b/sysdeps/s390/bits/atomic.h @@ -43,6 +43,8 @@ typedef uintptr_t uatomicptr_t; typedef intmax_t atomic_max_t; typedef uintmax_t uatomic_max_t; +#define USE_ATOMIC_COMPILER_BUILTINS 0 + #define __arch_compare_and_exchange_val_8_acq(mem, newval, oldval) \ (abort (), (__typeof (*mem)) 0) @@ -59,6 +61,7 @@ typedef uintmax_t uatomic_max_t; __archold; }) #ifdef __s390x__ +# define __HAVE_64B_ATOMICS 1 # define __arch_compare_and_exchange_val_64_acq(mem, newval, oldval) \ ({ __typeof (mem) __archmem = (mem); \ __typeof (*mem) __archold = (oldval); \ @@ -67,6 +70,7 @@ typedef uintmax_t uatomic_max_t; : "d" ((long) (newval)), "m" (*__archmem) : "cc", "memory" ); \ __archold; }) #else +# define __HAVE_64B_ATOMICS 0 /* 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. */ |