As a result Debug ROM would always take the spontaneous halt code path.
This didn't hurt spike since (so far?) the spike debug handler doesn't
attempt to do anything quick while code is running. But now the ROM is
more correct.
This should replace the ROM hack I implemented earlier, but for now both
exist together.
Back to the point where gdb connects, core jumps to ROM->RAM->ROM.
I'm not thrilled about including a static copy in so many cc files, and
making the compiler throw it out. But without really grokking the
Makefile this is the best it's going to be.
Connect with gdb, and the core will jump to Debug ROM and start
executing it. Then it crashes when it jumps to 0x400 because Debug RAM
isn't implemented (and doesn't live there anyway, for now).
Tim Newsome
Andrew Waterman