From owner-freebsd-multimedia  Wed Jan 28 03:03:02 1998
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To: Mike Smith <mike@smith.net.au>
cc: multimedia@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG
Subject: Re: http://www.descent2.com/ddn/sources/descent1/index.html 
In-reply-to: Your message of "Wed, 28 Jan 1998 21:02:10 +1030."
             <199801281032.VAA00659@word.smith.net.au> 
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Date: Wed, 28 Jan 1998 03:02:51 -0800
From: Amancio Hasty <hasty@rah.star-gate.com>
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> > > > 
> > > > It does *not* compile on FreeBSD and some of the modules use MASM.
> > > 
> > > "some"?!  This will need someone with a *working* MASM-to-gas 
> > > translator, or a penchant for x86 assembler and vector math.
> > 
> > The important thing to remember is that the source code is availabe for
> > anyone with the determination to work on it .
> > 
> > How many lines of assembler code?
> > find . -name \*.asm -exec wc {} \; | awk -f ~hasty/awk.scr -
> 
> You left this number out:
> 
> word:~/work/descent>find . -name "*.asm" | xargs cat | wc -l
>    32637
> 
> > How many lines of C code?
> > find . -name \*.c -exec wc {} \; | awk -f ~hasty/awk.scr -
> > 178714
> 
> > Not bad , usually after you go thru the first few large assembler routines
> > you can pick up the rest pretty easy.
> 
> Like I said, you want an automated translator.  MASM's idea of a 
> "macro" is pretty generous too, eg.
> 
> ;scales a vector, adds it to another, and stores in a 3rd
> ;takes edi=dest, ebx=src1, esi=src2, ecx=scale. returns edi=vector
> vm_vec_scale_add:       pushm   eax,edx
> 
>         for     ofs,<x,y,z>
>          mov    eax,[esi].ofs
>          fixmul ecx
>          add    eax,[ebx].ofs
>          mov    [edi].ofs,eax
>         endm
> 
>         popm    eax,edx
>         ret

I bet it is horribly hard to read it with the assembler listing or looking
at the code with  codeview 8)

Look it is doable and a very nice exercise for young programmers specially
in the multimedia or gaming arena .

	Cheers,
	Amancio