watchpoints and gdb/gdbserver on embedded arm

From: Ultra5 (handan_at_pico.sm)
Date: 05/25/05 

Date: Wed, 25 May 2005 17:21:11 GMT

I have a Cirrus EDB9302 development board running the Cirrus supplied linux
(kernel 2.4.21-rmk1-crus1.4.3). I am trying to test remote debugging but
can't get watchpoints to work. I have made a simple hello world program
that does several printfs and increments a variable in between the printfs.

I can set regular breakpoints and step and print variables without any
problems but when I set a watchpoint and continue usually nothing happens.
I say usually because on occasion I do break when the test variable is
incremented. But only the first time, never a second time.

Does anybody have any information about using watchpoints and remote
debugging using gdbserver/gdb?

I am using gdb-5.3 (supplied by Cirrus) and am running arm-linux-gdb (also
supplied by Cirrus) on Mandrake 10.1

My program:
============================================
#include <stdio.h>

int testVar;

void incTestVar( int amount )
{
    testVar += amount;
}

int main( int argc, char* argv )
{
    testVar = 0;

    fprintf( stderr, "Welcome to my test program\n" );

    ++testVar;

    fprintf( stderr, "I am testing watchpoints\n" );

    incTestVar( 5 );

    fprintf( stderr, "Isn't that magical?\n" );

    --testVar;

    return 0;
}

============================================

And I am compiling it like this: arm-linux-gcc -g -o gdbtest gdbtest.c

Chris