> nm a.out
08049630 d _DYNAMIC
080496e8 d _GLOBAL_OFFSET_TABLE_
w _Jv_RegisterClasses
08049620 d __CTOR_END__
~ 略 ~
080485c0 T _fini
080482f8 T _init
U _init_tls@@FBSD_1.0
08048350 T _start
08048370 t _start1
0804814c r abitag
U atexit@@FBSD_1.0
08048164 r crt_noinit_tag
08049710 B environ
U exit@@FBSD_1.0
080484c0 t finalizer
08048530 t frame_dummy
08048560 T main