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From: Kunal Parmar <kunal.parmar@codito.com>
To: gdb@sources.redhat.com
Subject: shared library symbols not loaded automatically
Date: Wed, 12 Jul 2006 18:12:00 -0000	[thread overview]
Message-ID: <44B53A5D.7090505@codito.com> (raw)

Hello,
I am trying to debug a program which uses shared libraries.
My host is i386-linux and target is arm-linux.
While debugging, gdb shows me the shared libraries used by my program
but it does not load the symbols automatically (auto-solib-add is set).
I have to explicitly use the sharedlibrary command after which the shared
library symbols are read in.

Here is the GDB session -

> GNU gdb 6.3
> Copyright 2004 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and 
> you are
> welcome to change it and/or distribute copies of it under certain 
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for 
> details.
> This GDB was configured as "--host=i686-pc-linux-gnu 
> --target=arm-linux"...
> (gdb) target remote 192.168.100.226:7777
> Remote debugging using 192.168.100.226:7777
> 0x40000b10 in ?? ()
> (gdb) b main
> Breakpoint 1 at 0x85f4: file foo.c, line 5.
> (gdb) c
> Continuing.
>
> Breakpoint 1, main () at foo.c:5
> 5         printf("%d\n", add(3,4));
> (gdb) info sharedlibrary
> From        To          Syms Read   Shared Object Library
> 0x4001e66c  0x4001e810  No          ./libadd.so
> 0x40027640  0x400277d0  No          ./libsub.so
> 0x40045170  0x40122328  No          /lib/libc.so.6
> 0x40157800  0x4015e3ec  No          /lib/libgcc_s.so.1
> 0x40000770  0x4001117f  No          /lib/ld-linux.so.2
> (gdb) show auto-solib-add
> Autoloading of shared library symbols is on.
> (gdb) sharedlibrary
> Reading symbols from /home/kunal/tmp/overflow/libadd.so...done.
> Loaded symbols for ./libadd.so
> Reading symbols from /home/kunal/tmp/overflow/libsub.so...done.
> Loaded symbols for ./libsub.so
> Reading symbols from /lib/libc.so.6...done.
> Loaded symbols for /lib/libc.so.6
> Reading symbols from /lib/libgcc_s.so.1...done.
> Loaded symbols for /lib/libgcc_s.so.1
> Reading symbols from /lib/ld-linux.so.2...done.
> Loaded symbols for /lib/ld-linux.so.2
> (gdb) info sharedlibrary
> From        To          Syms Read   Shared Object Library
> 0x4001e66c  0x4001e810  Yes         ./libadd.so
> 0x40027640  0x400277d0  Yes         ./libsub.so
> 0x40045170  0x40122328  Yes         /lib/libc.so.6
> 0x40157800  0x4015e3ec  Yes         /lib/libgcc_s.so.1
> 0x40000770  0x4001117f  Yes         /lib/ld-linux.so.2
> (gdb)


I want the shared library symbols to be read in automatically. Any help 
will be appreciated.

Regards,
Kunal Parmar


             reply	other threads:[~2006-07-12 18:12 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-07-12 18:12 Kunal Parmar [this message]
2006-07-12 18:15 ` Daniel Jacobowitz
2006-07-21 16:14   ` Kunal Parmar
2006-07-22 20:09     ` Daniel Jacobowitz
2006-07-22 21:07       ` Paul Koning
2006-07-22 23:17         ` Daniel Jacobowitz
2006-07-23 22:36       ` Kunal Parmar

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