Re: gdb is breaking at wrong locations

[Kevin Buettner <kevinb at redhat dot com>]

On Sep 27,  3:02pm, David Knuth wrote:

> We've got an m68k-coff tool chain to develop for and debug a 68332 
> board via BDM.  I'm using gdb 4.17 and an ICD BDM pod.  Today, I 
> noticed that it is not stopping at the set break points.  It is 
> stopping about 6 lines after it should, thus it is stopping at times 
> when I don't expect it to.  All the break points are at lines the are 
> the else of an if condition and all are a return error; statement.  
> Also, gdb is crashing frequently, or at least it's telling me there's a 
> SIGBUS fault and it cannot proceed.
> 
> 1) Are there somethings I should look out for when setting break 
> points?  Any no-nos?
> 
> 2) Can I/ should I upgrade to a later version of GDB?  Will a newer 
> version work with the older gcc/as/ld/ar tools I'm using now?
> 
> As a side note, I've noticed that if I remove the parallel port 
> extension cable between the laptop and BDM pod, the number of crashes 
> decreases.  The problem with not breaking at the right location does 
> not go away, however.

It sounds to me like you have a mismatch between the executable that
you're running on the target and the symbol file that you're loading
into gdb.

Kevin