#if defined(__sh__)

#define HAS_TEST_AND_SET

typedef unsigned char slock_t;

#define TAS(lock) tas(lock)

static __inline__ int

tas(volatile slock_t *lock)

{

       register int _res = 1;

       __asm__ __volatile__(

               "tas.b  @%1\n\t"

               "movt   %0\n\t"

               "xor    #1,%0"

:              "=z"(_res)

:              "r"(lock)

:              "t","memory");

       return _res;

}

#endif  /* __sh__ */