John M wrote:
<snip>
I really would like the Linkage Stack to become generally
useful. So I could just use a BAKR to save state on entry and PC to 
return.
</snip>

In what way does BAKR...PR not let you accomplish that (if by "state" you 
are referring to thing such as registers and PSW state)?
BAKR 14,0
...
PR

with this sometimes being preceded by BSM 14,0 in order to make sure that 
the reg 14 is properly defined for the AMODE needed (unnecessary if you 
got here by something like BASR 14,15 or BRASL 14,xxx).

As pointed out, this would still be considerably slower than the analogous 
register saving/restoring.

Peter Relson
z/OS Core Technology Design


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