#define a_barrier a_barrier
static inline void a_barrier()
{
        __asm__ __volatile__ ("fence rw,rw" : : : "memory");
}

#define a_cas a_cas
static inline int a_cas(volatile int *p, int t, int s)
{
        int old, tmp;
        __asm__ __volatile__ (
                "\n1:   lr.w.aqrl %0, (%2)\n"
                "       bne %0, %3, 1f\n"
                "       sc.w.aqrl %1, %4, (%2)\n"
                "       bnez %1, 1b\n"
                "1:"
                : "=&r"(old), "=&r"(tmp)
                : "r"(p), "r"((long)t), "r"((long)s)
                : "memory");
        return old;
}

#define a_cas_p a_cas_p
static inline void *a_cas_p(volatile void *p, void *t, void *s)
{
        void *old;
        int tmp;
        __asm__ __volatile__ (
                "\n1:   lr.d.aqrl %0, (%2)\n"
                "       bne %0, %3, 1f\n"
                "       sc.d.aqrl %1, %4, (%2)\n"
                "       bnez %1, 1b\n"
                "1:"
                : "=&r"(old), "=&r"(tmp)
                : "r"(p), "r"(t), "r"(s)
                : "memory");
        return old;
}