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From: news@ucf1vm.BITNET
Newsgroups: comp.lang.asm370
Subject: Re: memo on my structure assembler macros
Message-ID: <9104151705.AA18189@ucbvax.Berkeley.EDU>
Date: 15 Apr 91 07:36:55 GMT
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Reply-To: IBM 370 Assembly Programming Discussion List
              <ASM370@OHSTVMA.BITNET>
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phil@ux1.cso.uiuc.edu (Phil Howard KA9WGN) writes:
[...]
>                STRUCTURED ASSEMBLER PROGRAMMING MACROS
>
>         $IF   condition-1
>           .     \
[...]
Using a good Assembler (like ASM-H with SLAC extensions) there is no need to
code such programmer-unfriendly code like
R0        EQU   0
HWORD     DS    H
          LH    R0,HWORD
          $IF   ZERO
          LTR   R0,R0
          $THEN

If your Assembler supports type- and length attributes in outer and inner
macros, if you add some own types like "Register" you can code the same
similar to "high level languages" like FORTRAN:
R0       #EQUR  0
HWORD    DS     H
         IF     HWORD,EQ,0,THEN

We started this type of programming in the late 60-th -- and stopped it
some years ago. If anybody is interested I will look for a description
and the corresponding macro-library.
--
Werner Icking          icking@gmdzi.gmd.de          (+49 2241) 14-2443
Gesellschaft fuer Mathematik und Datenverarbeitung mbH (GMD)
Schloss Birlinghoven, P.O.Box 1240, D-5205 Sankt Augustin 1, FRGermany
                                  "Der Dativ ist dem Genitiv sein Tod."