Dave,
I found the BAKR/PR limitation I was thinking about:
From the VSE Systems Macro Ref, under STXIT:
"The STXIT macro is only allowed when the linkage stack is empty. If a
STXIT macro is issued in a module called with a PC or BAKR instruction
(that is, the linkage stack is not empty), the calling task is canceled."
Tony Thigpen
Tony Thigpen wrote on 1/21/22 5:18 PM:
The definitive source is:
Supervisor Diagnosis Reference z/VSE (for your release)
Chapter 2: Design Information
Section: z/Architecture Linkage Stack
The z/VSE 6.1 manual has a better PDF index and the language for this
section has not changed since 4.1.
Off the top of my head, I remember there was some conflict with
something, which I think was OCEXIT, which keeps me from using BAKR/PR.
Tony Thigpen
Dave Clark wrote on 1/21/22 11:17 AM:
"IBM Mainframe Assembler List" <ASSEMBLER-LIST@LISTSERV.UGA.EDU> wrote on
01/21/2022 09:55:32 AM:
It's worse than you think. There is a save area format tag literal for
the save area, but it's not set by the caller. It is set by the callee
saying how he used the previous save area in the chain. Which makes no
sense.
Hey, Tony, can the BAKR instruction be used in z/VSE?
Meaning, is
there a system linkage-stack on z/VSE that can be used for saving
everything instead of using the caller's provided savearea?
Sincerely,
Dave Clark
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