On 12/10/2011 7:12 AM, Peter Relson wrote:
I actually disdain using the
linkage stack, for these reasons:
BAKR / PR are included in Chapter 10 of the POO: Control
Instructions, not Chapter 7, General Instructions; they
are semiprivileged instructions
I do not believe that that reason has merit.
Hmmm. Are you advocating use of semiprivileged instructions
in application code then? Or only some of them? Which ones
are 'safe' or 'OK' to use in standard application programs?
Where does one draw the line?
but I think the easy way is not always
the best way, depending on circumstances
No argument there.
Save area chains may not be available or meaningful for
debugging situations
Available? Yes. Meaningful? Yes, but not as easily. And they only tell
part of the
story, with the other part being on the linkage stack.
Peter Relson
z/OS Core Technology Design
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