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shared library symbols not loaded automatically
- From: Kunal Parmar <kunal dot parmar at codito dot com>
- To: gdb at sources dot redhat dot com
- Date: Wed, 12 Jul 2006 23:37:25 +0530
- Subject: shared library symbols not loaded automatically
- Reply-to: kunal dot parmar at codito dot com
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
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you are
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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