On Mon, 24 Sep 2012 00:36:18 -0400 Gerhard Postpischil <[email protected]>
wrote:

:>On 9/23/2012 9:28 PM, micheal butz wrote:
:>> and balrs to IKJPARS setting R14 to CVTBSM2

:>> Am I suppoused to return with a register other then r14

:>You are expected to branch back using R14, or else issue SVC 3 
:>(less efficient, but imperative if you've lost R14), or branch 
:>to the SVC 3 call in the CVT. The documented return is via R14.

The SVC 3 option is only available if the program is ONLY invoked via
supervisor assisted linkage. If the routine can be invoked by CALL/BALR/BASR
it must BR 14 - doing an SVC 3 in such a case will terminate the caller as
well.

--
Binyamin Dissen <[email protected]>
http://www.dissensoftware.com

Director, Dissen Software, Bar & Grill - Israel


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