src/mm/boehm-gc/libatomic_ops-1.2/src/atomic_ops/sysdeps/sunc/sparc.S

   1         .seg    "text"
   2         .globl  AO_test_and_set_full
   3 AO_test_and_set_full:
   4         retl
   5           ldstub        [%o0],%o0