| #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__ __volatile__ ( |
| "\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) |
| : "r"(p), "r"((long)t), "r"((long)s) |
| : "memory"); |
| 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__ __volatile__ ( |
| "\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) |
| : "r"(p), "r"(t), "r"(s) |
| : "memory"); |
| return old; |
| } |