Well, it depends. My #ENTER allocates a large stack area for all parms
and save areas used within the macro set (and associated programs).
That way each subprogram doesn't have to do it's own getmain and
chaining. The plan was to be able to code ASM with some of the ease of
C coding, especially around string processing which can be pretty
difficult in ASM.
On 9/5/2023 7:27 PM, Paul Gilmartin wrote:
On Tue, 5 Sep 2023 19:03:53 -0700, Tom Brennan wrote:
Oops... Yes! I was thinking ENTER/EXIT. My own macro set uses #ENTER
and #EXIT. I put the pound sign on everything so there's no confusion
with real instructions or IBM macros (well, at least I hope!)
At that, I'll switch to the Dark Side for a while. If IBM's macros were good
enough programmers wouldn't be tempted to devise alternatives.
I've worked for a couple projects that did so. One enhancement was to
extend the RSA so R13 could be used as a base for working storage,
a practice that others have harshly criticized as dangerous. Another
was to preserve the CC through exit, which I disliked (didn't work on 370
because it used IPM, SPM.)
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