pair unlock when rap load

Signed-off-by: Peng Fan <van.freenix@gmail.com>
assign NULL to free pointer

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Support file details

Signed-off-by: Peng Fan <van.freenix@gmail.com>
add linkmap support

Signed-off-by: Peng Fan <van.freenix@gmail.com>