libc-top-half/musl/arch/or1k/atomic_arch.h

   1 #define a_cas a_cas
   2 static inline int a_cas(volatile int *p, int t, int s)
   3 {
   4         __asm__("1:     l.lwa %0, %1\n"
   5                 "       l.sfeq %0, %2\n"
   6                 "       l.bnf 1f\n"
   7                 "        l.nop\n"
   8                 "       l.swa %1, %3\n"
   9                 "       l.bnf 1b\n"
  10                 "        l.nop\n"
  11                 "1:     \n"
  12                 : "=&r"(t), "+m"(*p) : "r"(t), "r"(s) : "cc", "memory" );
  13         return t;
  14 }