I have a callable (non-PC; just basic CALL) that requires APF authorization by the caller. It partially operates in Key 0 Supervisor State, but I want to allow callers the flexibility to enter in any key and either state.
I know how to get to and from Supervisor State with MODESET (SVC form). I'm familiar with MODESET (SVC form) and have used it a fair amount in the past. I can then use IPK and SPKA to save and restore the caller's key, and to get to Key 0. But what would be the best way to determine whether the caller had entered in Supervisor State so I could return to the caller in his original mode (and also avoid the overhead of MODESET)? Some sort of "store PSW" instruction so I could TM on bit 15? Thanks, Charles ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
