gdbserver errors

knobby67 · 10-18-2010, 01:23 PM

Hi all,
I've started gdbserver on a remote boards,gdbserver 192.168.0.7:222 test.
This all starts up OK.
On my PC I start off the other end with

arm-linux-gdb test

this gives

GNU gdb 6.8
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "--host=i686-pc-linux-gnu --target=arm-unknown-linux-uclibc"...

now I try to connect with

target remote 192.168.0.9:2222

this gives

Remote debugging using 192.168.0.9:2222
[New Thread 271]
warning: Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code.
0x400008c0 in ?? ()

It seems to connect however I get warnings about dynamic linker breakpoint functions. When I try to run with run

I get

The program being debugged has been started already.
Start it from the beginning? (y or n) y
Starting program: test
Don't know how to run. Try "help target".

on the arm board side gdbserver is dropped with killing inferior

Can anyone advise how I get the debugger to run? Thanks

David1357 · 10-18-2010, 02:26 PM

Quote:

Originally Posted by knobby67

Code:

target remote 192.168.0.9:2222

Don't you want "target remote 192.168.0.9:222"?

Regarding the following problem:

Code:

warning: Unable to find dynamic linker breakpoint function.
GDB will be unable to debug shared library initializers
and track explicitly loaded dynamic code.
0x400008c0 in ?? ()

To save yourself a lot of typing, create a gdbinit file in the directory where you start arm-linux-gdb and put this in it

Code:

define sigs
    handle SIG32 nostop noprint pass
    handle SIG33 nostop noprint pass
end

define connect
    sigs
    set solib-absolute-prefix <path-to-your-ARM-shared-libraries-root>
    target remote 192.168.0.9:222
end

Then you can just type "connect" and [Enter] after you start GDB.

knobby67 · 10-19-2010, 02:59 AM

Thanks.

Sorry typo by me, I was using 2222.

Found my problem, I can't use run on debugger, need to use continue.

Thanks for the init file tip