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-rw-r--r--sysdeps/s390/bits/atomic.h4
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. */