47 #  define XCHG_M_R(_addr,_lval) \  argument
51         : /*in*/  "m"(_addr) \
54 #  define XCHG_M_R_with_redundant_LOCK(_addr,_lval) \  argument
58         : /*in*/  "m"(_addr) \
63 #  define XCHG_M_R(_addr,_lval)                              \  argument
70            : /*out*/ [global]"+m"(_addr), [local]"+d"(_lval) \
76 #  define XCHG_M_R_with_redundant_LOCK(_addr,_lval) \  argument
77       XCHG_M_R(_addr,_lval)
80 #  define XCHG_M_R(_addr,_lval)                              \  argument
88         : /*in*/  "r"(&_addr), "r"(_lval)                    \
92 #  define XCHG_M_R_with_redundant_LOCK(_addr,_lval) \  argument
93       XCHG_M_R(_addr,_lval)
98 #    define XCHG_M_R(_addr,_lval)                                           \  argument
101           while ((tmp = *(int*)(& _addr)),                                  \
102                  ! __sync_bool_compare_and_swap((int*)&_addr, tmp, _lval))  \
109 #    define XCHG_M_R(_addr,_lval) \  argument
110         do { int tmp = *(int*)(& _addr); \
111              *(int*)(& _addr) = (_lval); \
115 #  define XCHG_M_R_with_redundant_LOCK(_addr,_lval) \  argument
116       XCHG_M_R(_addr,_lval)