#define a_barrier a_barrier static inline void a_barrier() { __asm__ __volatile__ ("fence rw,rw" : : : "memory"); } #define a_cas a_cas static inline int a_cas(volatile int *p, int t, int s) { int old, tmp; __asm__("\n1: lr.w.aqrl %0, %2\n" " bne %0, %3, 1f\n" " sc.w.aqrl %1, %4, %2\n" " bnez %1, 1b\n" "1:" : "=&r"(old), "+r"(tmp), "+A"(*p) : "r"(t), "r"(s)); return old; } #define a_cas_p a_cas_p static inline void *a_cas_p(volatile void *p, void *t, void *s) { void *old; int tmp; __asm__("\n1: lr.d.aqrl %0, %2\n" " bne %0, %3, 1f\n" " sc.d.aqrl %1, %4, %2\n" " bnez %1, 1b\n" "1:" : "=&r"(old), "+r"(tmp), "+A"(*(long *)p) : "r"(t), "r"(s)); return old; }