[uclibc-ng-devel] [PATCH 1/3] NPTL/ARCv2: Implement full memory barrier for NPTL

Signed-off-by: Vineet Gupta vgupta@synopsys.com --- libc/sysdeps/linux/arc/bits/atomic.h | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/libc/sysdeps/linux/arc/bits/atomic.h b/libc/sysdeps/linux/arc/bits/atomic.h index d4abf4eb7896..1fdc83f70f6b 100644 --- a/libc/sysdeps/linux/arc/bits/atomic.h +++ b/libc/sysdeps/linux/arc/bits/atomic.h @@ -24,8 +24,11 @@ typedef uintmax_t uatomic_max_t;

void __arc_link_error (void);

-#define atomic_full_barrier() \ - __asm__ __volatile__("": : :"memory") +#ifdef __A7__ +#define atomic_full_barrier() __asm__ __volatile__("": : :"memory") +#else +#define atomic_full_barrier() __asm__ __volatile__("dmb 3": : :"memory") +#endif

/* Atomic compare and exchange. */