http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=e3a384578f677c05d812d99c2c92aa13670bd06a Upstream-Status: Pending Remove the `q' suffix on x86-64 atomic instructions. We don't need the `q' suffix on x86_64 atomic instructions for AO_t, which is defined as "unsigned long". "unsigned long" is 32bit for x32 and 64bit for x86-64. The register operand in x86-64 atomic instructions is sufficient to properly determine the register size. Received this patch from H.J. Lu Signed-Off-By: Nitin A Kamble 2011/12/02 --- a/src/atomic_ops/sysdeps/gcc/x86_64.h +++ b/src/atomic_ops/sysdeps/gcc/x86_64.h @@ -56,7 +56,7 @@ AO_fetch_and_add_full (volatile AO_t *p, { AO_t result; - __asm__ __volatile__ ("lock; xaddq %0, %1" : + __asm__ __volatile__ ("lock; xadd %0, %1" : "=r" (result), "=m" (*p) : "0" (incr), "m" (*p) : "memory"); return result; @@ -106,7 +106,7 @@ AO_int_fetch_and_add_full (volatile unsi AO_INLINE void AO_or_full (volatile AO_t *p, AO_t incr) { - __asm__ __volatile__ ("lock; orq %1, %0" : + __asm__ __volatile__ ("lock; or %1, %0" : "=m" (*p) : "r" (incr), "m" (*p) : "memory"); } @@ -131,7 +131,7 @@ AO_compare_and_swap_full(volatile AO_t * AO_t old, AO_t new_val) { char result; - __asm__ __volatile__("lock; cmpxchgq %3, %0; setz %1" + __asm__ __volatile__("lock; cmpxchg %3, %0; setz %1" : "=m"(*addr), "=q"(result) : "m"(*addr), "r" (new_val), "a"(old) : "memory"); return (int) result;