What exactly does "info sharedlibrary" command show?

["chen free" <dits365 at gmail dot com>]

Hi, all

Recently I'm looking for a proper method of finding the memory usage
of shared library of a specific program, and from the manual of GDB, I
found "info sharedlibrary" command.

However, I'm curious about the display of its result. Does anyone know
the meaning of memory address reported by GDB? Something like:
============

> From        To          Syms Read   Shared Object Library
0x005cfc00  0x006bf800  Yes         /lib/tls/libc.so.6
0x0059e7a0  0x005b010f  Yes         /lib/ld-linux.so.2

============
I believe they are not the physical address, right?

If they are virtual memory address, why they are different from the
info from /proc/{PID}/maps? the {PID} is the specific program process
ID.

============
Contents of "maps"

0x0059e000  0x005b3000 r-xp    00000000 fd:00 3605642    /lib/ld-2.3.4.so
0x005b3000  0x005b4000 r--p    00014000 fd:00 3605642    /lib/ld-2.3.4.so
0x005b4000  0x005b5000 rw-p    00015000 fd:00 3605642    /lib/ld-2.3.4.so
0x005bb000  0x006de000 r-xp    00000000 fd:00 3605643    /lib/tls/libc-2.3.4.so
0x006de000  0x006df000 r--p    00123000 fd:00 3605643    /lib/tls/libc-2.3.4.so
0x006df000  0x006e2000 rw-p    00124000 fd:00 3605643    /lib/tls/libc-2.3.4.so
0x006e2000  0x006e4000 rw-p    006e2000 00:00 0
0x08048000  0x08049000 r-xp    00000000 00:2f 1025644    /home/Simple
0x08049000  0x0804a000 rw-p    00000000 00:2f 1025644    /home/Simple
0xb7fe2000  0xb7fe3000 rw-p    b7fe2000 00:00 0
0xb7fff000  0xb8000000 rw-p    b7fff000 00:00 0
0xbff63000  0xc0000000 rw-p    bff63000 00:00 0
0xffffe000  0xfffff000 ---p    00000000 00:00 0
============

Thanks in advance!

BRs,
Eric