Re: Arm ldaxr / stxr loop question

On 2024-11-10, Lawrence D'Oliveiro <ldo@nz.invalid> wrote:

On Sun, 10 Nov 2024 01:26:22 +0000, MitchAlsup1 wrote:
>

It reads better without explanation ...

>
Reminds me of the “EIEIO” instruction from IBM POWER (or was it only
PowerPC).
>
Can anybody find any other example of any IBM engineer ever having a sense
of humour? Ever?

>
One of the resource types in JES2, the batch subsystem for z/OS, is
BERT ("Block Extension Reuse Table") and needs some sizing/tuning by
the sysprog. Not too noticeable as humourous but for low-level use
from Assembler some of the macros which manipulate them allow you to
(1) copy one into memory, i.e. "Deliver Or Get" a BERT
(2) define a hook to get control when a BERT is released, i.e
"Do It Later" for a BERT release.
(3) generate a control block for a related data area, i.e. a
"Collector Attribute Table" for BERTs.
>
These macros are
(1) $DOGBERT
(2) $DILBERT
(3) $CATBERT