static inline int a_cas(volatile int *p, int t, int s)
{
	return __sync_val_compare_and_swap(p, t, s);
}

static inline void *a_cas_p(volatile void **p, void *t, void *s)
{
	return __sync_val_compare_and_swap(p, t, s);
}

static inline int a_swap(volatile int *p, int v)
{
	int old;
	do old = *p;
	while (!__sync_bool_compare_and_swap(p, old, v));
	return old;
}

static inline int a_fetch_add(volatile int *p, int v)
{
	return __sync_fetch_and_add(p, v);
}

static inline void a_and(volatile int *p, int v)
{
	__sync_fetch_and_and(p, v);
}

static inline void a_or(volatile int *p, int v)
{
	__sync_fetch_and_or(p, v);
}

static void a_barrier()
{
	__sync_synchronize();
}

static inline void a_crash()
{
	__builtin_trap();
}

static inline int a_ctz_l(unsigned long x)
{
	return __builtin_ctzl(x);
}

static inline int a_ctz_64(uint64_t x)
{
	return __builtin_ctzll(x);
}

#define a_cas a_cas
#define a_cas_p a_cas_p
#define a_swap a_swap
#define a_fetch_add
#define a_and
#define a_or
#define a_barrier
#define a_crash
#define a_ctz_l
#define a_ctz_64

#endif