The clhsdb 'pmap' command prints the start addresses and the sizes of the various load modules as follows:
0x0000000000400000 14K /home/jini/pmdo/dev/build/linux-x86_64-normal-server-fastdebug/jdk/bin/java
0x00007f20b98da000 133K /home/jini/pmdo/dev/build/linux-x86_64-normal-server-fastdebug/jdk/lib/libnet.so

It would be more intuitive to have the end address printed out as in jcmd. (jcmd prints out the various segments separately too).