1 #define a_barrier a_barrier 2 static inline void a_barrier() 3 { 4 __asm__ __volatile__ ("fence rw,rw" : : : "memory"); 5 } 6 7 #define a_cas a_cas 8 static inline int a_cas(volatile int *p, int t, int s) 9 { 10 int old, tmp; 11 __asm__ __volatile__ ( 12 "\n1: lr.w.aqrl %0, (%2)\n" 13 " bne %0, %3, 1f\n" 14 " sc.w.aqrl %1, %4, (%2)\n" 15 " bnez %1, 1b\n" 16 "1:" 17 : "=&r"(old), "=&r"(tmp) 18 : "r"(p), "r"((long)t), "r"((long)s) 19 : "memory"); 20 return old; 21 } 22 23 #define a_cas_p a_cas_p 24 static inline void *a_cas_p(volatile void *p, void *t, void *s) 25 { 26 void *old; 27 int tmp; 28 __asm__ __volatile__ ( 29 "\n1: lr.d.aqrl %0, (%2)\n" 30 " bne %0, %3, 1f\n" 31 " sc.d.aqrl %1, %4, (%2)\n" 32 " bnez %1, 1b\n" 33 "1:" 34 : "=&r"(old), "=&r"(tmp) 35 : "r"(p), "r"(t), "r"(s) 36 : "memory"); 37 return old; 38 } 39