1、查看内核符号：
derek@ubox:~/share$ sudo modprobe uio
derek@ubox:~/share$ cat /proc/kallsyms | grep uio
0000000000000000 t map_type_show [uio]
0000000000000000 t portio_type_show [uio]
0000000000000000 t uio_poll [uio]
0000000000000000 t uio_interrupt [uio]
2、查看 *.a *.so 符号表
objdump -tT libxxx.so | grep test
nm -D libxxx.so | grep test