1#define a_barrier a_barrier
2static inline void a_barrier()
3{
4 __asm__ __volatile__ ("fence rw,rw" : : : "memory");
5}
6
7#define a_cas a_cas
8static 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
24static 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}