// Currently, SUN CC requires object file

#if defined (__GNUC__)

/*

**  int _STLP_atomic_exchange (__stl_atomic_t *pvalue, __stl_atomic_t value)

*/

# if defined(__sparc_v9__) || defined (__sparcv9) 

#  ifdef __arch64__

#   define _STLP_EXCH_ASM  asm volatile ("casx [%3], %4, %0 ;  membar  #LoadLoad | #LoadStore " : \

                   "=r" (_L_value2), "=m" (*_L_pvalue1) : \

                   "m" (*_L_pvalue1), "r" (_L_pvalue1), "r" (_L_value1), "0" (_L_value2) )

#  else /* __arch64__ */

#   define _STLP_EXCH_ASM  asm volatile ("cas [%3], %4, %0" : \

                   "=r" (_L_value2), "=m" (*_L_pvalue1) : \

                   "m" (*_L_pvalue1), "r" (_L_pvalue1), "r" (_L_value1), "0" (_L_value2) )

#  endif

# else /* __sparc_v9__ */

#  define _STLP_EXCH_ASM asm volatile ("swap [%3], %0 " : \

                                       "=r" (_L_value2), "=m" (*_L_pvalue1) : \

                                       "m" (*_L_pvalue1), "r" (_L_pvalue1),  "0" (_L_value2) )

# endif

#  define _STLP_ATOMIC_EXCHANGE(__pvalue1, __value2) \

 ({  register volatile __stl_atomic_t *_L_pvalue1 = __pvalue1; \

     register __stl_atomic_t _L_value1, _L_value2 =  __value2 ; \

     do { _L_value1 = *_L_pvalue1; _STLP_EXCH_ASM; } while ( _L_value1 != _L_value2 ) ; \

     _L_value1; })

#  define _STLP_ATOMIC_INCREMENT(__pvalue1) \

 ({  register volatile __stl_atomic_t *_L_pvalue1 = __pvalue1; \

    register __stl_atomic_t _L_value1, _L_value2; \

    do { _L_value1 = *_L_pvalue1;  _L_value2 = _L_value1+1; _STLP_EXCH_ASM; } while ( _L_value1 != _L_value2 ) ; \

    (_L_value2 + 1); })

#  define _STLP_ATOMIC_DECREMENT(__pvalue1) \

 ({  register volatile __stl_atomic_t *_L_pvalue1 = __pvalue1; \

    register __stl_atomic_t _L_value1, _L_value2; \

    do { _L_value1 = *_L_pvalue1;  _L_value2 = _L_value1-1; _STLP_EXCH_ASM; } while ( _L_value1 != _L_value2 ) ; \

    (_L_value2 - 1); })

# elif ! defined (_STLP_NO_EXTERN_INLINE)

extern "C" __stl_atomic_t _STLP_atomic_exchange(__stl_atomic_t * __x, __stl_atomic_t __v);

extern "C" void _STLP_atomic_decrement(__stl_atomic_t* i);

extern "C" void _STLP_atomic_increment(__stl_atomic_t* i);

#  define _STLP_ATOMIC_INCREMENT(__x)           _STLP_atomic_increment((__stl_atomic_t*)__x)

#  define _STLP_ATOMIC_DECREMENT(__x)           _STLP_atomic_decrement((__stl_atomic_t*)__x)

#  define _STLP_ATOMIC_EXCHANGE(__x, __y)       _STLP_atomic_exchange((__stl_atomic_t*)__x, (__stl_atomic_t)__y)

# endif