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On Mon, 21 Sep 1998, Robert J. Brown wrote: > A good software cpu simulator should provide features a software > debugger cannot possibly provide. I should think the easiest way to > integrate such a thing with gdb would be to stick a cross-debug gdb > interface into the software load and do it exactly like you would do > it on a real hardware platform. > > A fancier interface might hook back to to simulation support code to > do the kernel cross-debug thing, but then you would not be testing the > cross debug interface you will ultimately need on the real hardware > anyway. The PowerPC and SPARC simulators built into gdb are very powerful and capable of supporting the addition of custom devices. psim is especially robust in this regard. I have used psim to test real applications to a remarkably high degree of fidelity. It significantly reduced the need for real hardware. You can't do everything on a simulator but with a good one, you can stay off hardware for a LONG time. --joel