Patch from Eric Norum <eric@skatter.USask.Ca>:

    I found that my 68040/68360 test programs would not run even after
    I fixed the `wrong BSP' problem.

    It seems that there's a bug in the interrupt handling code for
    processors with hardware interrupt stacks (e.g. 68040).  The wrong
    status register was getting pushed on the stack for the `return
    from exception' to call _ISR__Dispatch.   This ended up making
    the context switch code run on the interrupt stack, so interrupt-driven
    context switches would always fail.

    I guess that no one has tried running any of the RTEMS-4.0 snapshots
    on a 68040 machine!

    Anyhow, here are the patches for
        1) gen68360.cfg   ---   to fix the `wrong-BSP' problem.
        2) m68k/cpu_asm.s ---   to fix the hardware interrupt stack problem.

    With these patches in place, the network demo programs run on my
    68040/68360 system.  The paranoia program runs with no failures,
    defects nor flaws.

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