IBM has never made any claim that all its macros will work without a base
reg (let alone the large number that, even with macro IEABRC to convert
base-displacement to relative branches, still require code addressability).

As they are pointed out to us, based on relative importance, we try to deal
with those that, in particular, need more than just relative branch. Any
change to GTRACE would still require addressability to "static data" in all
likelihood

As to Ed's point,
>I believe these system macros deliberately avoid the use of literals.
I'd have to say "not really". Particularly for the SYSSTATE ARCHLVL-related
changes, quite the reverse -- literals are the approach taken (when there
are not suitable "immediate" instructions).

Peter Relson
z/OS Core Technology Design

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