On Mon, 4 Jun 2018 16:58:31 +0000, Seymour J Metz wrote: >PER uses program interrupts, not an SVC. > >That said, calling an SVC does not normally alter R14; the SVC would have to >do something unusual. > Does either PER or SVC preserve the program mask (CC, ILC, ...)? If so, that's the one dbx ought to use.
Saving these things can be important if you break just before an IPM instruction. -- gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
