On 5/28/2018 2:57 PM, Peter Relson wrote:
-- You might find that use of BAKR by the caller poses an unnecessary dependency between the caller and the callee. Consider the alternative of calling via BASR, and the callee deciding whether to save/restore regs via BAKR/PR or via STMG(+STAM)/LMG(+LAM).
I find that BASR imposes an unnecessary dependency between the caller and callee in that the callee is generally expected to be running in the same AMODE as the caller or at the very least callee's address must be reachable in the caller's current AMODE.
I realize BAKR does not set/change AMODE and therefore my suggestion may be slightly off topic but, in this tri-modal, 21st-Century world in which we find ourselves coding, might I respectfully suggest BASSM/BSM linkage be used instead of BASR/BR?
That's what we now do *everywhere* for cross-program linking -- we still use BAS/BASR/JAS/JASL for same-program linking -- and have not once (yet) regretted the time spent performing that mass conversion...
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