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Re: What exactly does "info sharedlibrary" command show?
- From: Frederic RISS <frederic dot riss at st dot com>
- To: chen free <dits365 at gmail dot com>
- Cc: gdb at sources dot redhat dot com
- Date: Tue, 29 Aug 2006 14:47:14 +0200
- Subject: Re: What exactly does "info sharedlibrary" command show?
- References: <e55f4e5f0608290503l54ffebfdu2e5e65f4c8089fd2@mail.gmail.com>
On Tue, 2006-08-29 at 20:03 +0800, chen free wrote:
> Recently I'm looking for a proper method of finding the memory usage
> of shared library of a specific program,
This is a tough job, I'm not sure looking at info sharedlibrary will
help you much.
> 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?
They are the start/end (virtual) addresses of the library .text section.
> ============
> Contents of "maps"
> 0x005bb000 0x006de000 r-xp 00000000 fd:00 3605643 /lib/tls/libc-2.3.4.so
If you take this as an example, you should find out that 0x005cfc00 -
0x005bb000 gives you the .text section load addr (check in the elf file
using objdump -h or readelf -s).
Fred.