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#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;
}
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