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