On Tue, 21 Oct 2014 09:18:52 -0500, Tom Marchant wrote:
>
>I stand corrected. BALR and BASR do not set bit 63 of the return register if
>in
>AMODE 64, so what I wrote earlier applies only to AMODE 24 or 31 callers using
>those instructions. BASSM always provides the correct information for BSM to
>correctly return to the calling program.
>
Thanks. I'm not up to date on my P[ro]Op reading, and was ignorant of
the bit 63 behavior.
FWIW, I see in SYS1.MACLIB(RETURN):
OI 15(13),X'01' SET RETURN INDICATION 01600000
BASSM has some minor conflict with this convention. I doubt that
it matters. Does anyone inspect this indication in dumps?
-- gil
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