multithreaded remote debugging

["Frank van Eijkelenburg" <frank.van.eijkelenburg@technolution.nl>]

Hi, I'm new to gdb. I try to remote debug an application:

I have a linux machine with redhat installed (2.4.7-10), this is the host.
On the target an ARM processor is running with linux kernel 2.4.16. I
compiled gdb on the host (with target arm-linux). I also cross-compiled
gdbserver. My application (which I want to debug) is compiled with compiler
option -g. I can start the gdbserver on the target and gdb on the host and
have a connection by tcp/ip. The application is multithreaded and uses the
libpthread library. If I ignore the SIG32 signal (with "handle SIG32 nostop"
and "handle SIG32 noprint") I can run the application. However, if I try to
execute "info threads" I only get information about one thread (the main
thread??). I can put breakpoints in the main thread and step through the
code, but if I put a breakpoint in another thread, the debugger will stop,
but I cannot step through the code:

Program received signal SIGTRAP, Trace/breakpoint trap.
0x400ab2e4 in ?? ()
(gdb) n
Cannot find bounds of current function

What do I wrong or is it not possible to step through the code of other
threads beside the main thread?
TIA

      Frank van Eijkelenburg
      System Designer

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