On Mon, Jan 18, 2010 at 3:14 PM, McKown, John <[email protected]> wrote: > Well, sort of. Many priviliged instructions are dispatched via SIE. You can't > affect those. If you have find an unimplimented priviliged instruction which > is not trapped by SIE (hum is this possible?), then you could modify the z/VM > software to trap go to your own routine instead of reflecting an program > interrupt 1 to the guest. Now that I think a about it a bit more, I doubt > this will work. I'll bet that SIE traps this and reflects the PIC 1 to the > guest directly. I learned VM back in the VM/370 days, long before SIE > existed. It would have worked back then. Every program interrupt back then > went to VM/370's FLIH and was either emulated or reflected back to the guest.
Ah, true, if SIE handles it, you're SOL. But since 370ACCOM works, I *think* an invalid opcode gets to CP. Would have to look; as you say, in the (bad) old days, we know CP would have been handling it for sure! SIE is pretty amazing... ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
