Re: m68k-coff SP changing

[Nick Papadonis <npapadon at yahoo dot com>]

Toshi Morita <tm2@best.com> writes:

> Nick Papadonis <npapadon@yahoo.com> wrote:
> 
> > Richard Henderson <rth@redhat.com> writes:
> > 
> > > On Tue, Apr 03, 2001 at 12:13:28PM -0400, Nick Papadonis wrote:
> > > > Does anyone know why the following instructions change my SP?
> > > > My target is m68k-coff.
> > > 
> > > No.  You've not given us enough to reproduce the problem.
> > > 
> > > 
> > > r~
> > > 
> > 
> > Here is my test case.  Compile, and step through.  Examine the stack
> > pointer.  My target is a m68331 MCU.  The exception vectors are all
> > NULL except for RESET - INIT SP and RESET - INIT PC. 
> > 
> 
> I think you're forgetting the GDB stub. It needs an exception vector
> to single-step.
> 
> I suspect you're not saving and restoring registers properly in
> the GDB stub, because your stack is being depressed on each instruction.
> 
> It could be another exception such as an interrupt, though.

The GDB stub is in the BDI not the 68331 board.  

Thanks.

- Nick