Re: A92: Fargo Preprocessor

To: assembly-92@lists.ticalc.org
Subject: Re: A92: Fargo Preprocessor
From: fi97 Guillaume POTHIER <guillaume.pothier@eleve.emn.fr>
Date: Fri, 08 May 1998 14:19:14 +0200
Cc: gpothier@eleve.emn.fr
Delivered-To: assembly-92-outgoing@towerguard.unix.edu.sollentuna.se
In-reply-to: Your message of "Fri, 08 May 1998 08:45:23 +0200." <3552AA03.E0FA5437@hell1og.be.schule.de>
Reply-To: assembly-92@lists.ticalc.org


That's a real good idea!!
> 
> I'm going to make a Fargo preprocessor, in the next weeks. I just wanted
> to
> ask you for suggestions/comments about it. The idea is the following:
> All assembly sourcetexts, that need to be preprocessed are named .XAS .
> So adding a line to the begin of fargo.bat like >>prefargo %1.xas
> %1.asm<<
> will preprocess the program befor compilation. (At the end you could add
> 
> del %1.asm) The preprocessor will do the following:
> 
>   * remove tabulators and spaces after commas, so you can write
>      >>move.w    d0,    d1<< instead of >>move.w d0,d1<<
>   * C - like comments (/*...*/ and //...)
>   * C - like macros, with some changes, this will give you the
> possibility to
>     write some of these things:
> 
>    #define loop(block) {
>      local lable    // makes looplable local within the macro
>      label:
>             block
>             bra label
>     }
> 
>   #define ifeq(block) {
>     local label
>               bne    label    // if equal flag is not set don't do the
> block
>               block
>     label:
>   }
> 
>    _main:
>      lea  LCD_MEM, a0
>     move.w d7, -(a7)
>     clr.w d7
>      loop ({
>        clr.l (a0)+
>        addq.w #1, d7
>        cmp.w d7, #959
>        ifeq ({move.w (a7)+,d7 ; bra end})
>      })
>     end:
>     rts
> 
>  of course this is just a silly example, but it shows you, what will be
> possible.
>  You could also write for - loop - macros, or anything else. {...} is to
> pass
>  arguments, that can contain commas or linebreaks. ; is to force a
> linebreak, when
>  preprocessing. (to write many commands on one line)
>

References:

A92: Fargo Preprocessor

From: "David Kühling" <dkuehlin@hell1og.be.schule.de>