Peter Relson wrote:
if SVCs architecturally have this restriction
SVCs do not architecturally have this restriction.
Given what I know in general (not specific to USS), I would not make the
assumption that "...because the SVC 144 routine uses register 14 to exit"
is true.
It might be true that a modification to register 14 is lost, but this is
not the reason. Conceivably the designer/coder of that routine that it was
true, but that doesn't make it true.
I'll see if I can track down someone who knows.
Peter Relson
z/OS Core Technology Design
Hi Peter!
Did your search bear any fruit?
- Thanks -
- Dave Rivers -
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