Date: Wed, 28 Jan 1998 21:02:10 +1030 From: Mike Smith <mike@smith.net.au> To: Amancio Hasty <hasty@rah.star-gate.com> Cc: Mike Smith <mike@smith.net.au>, multimedia@FreeBSD.ORG, freebsd-hackers@FreeBSD.ORG Subject: Re: http://www.descent2.com/ddn/sources/descent1/index.html Message-ID: <199801281032.VAA00659@word.smith.net.au> In-Reply-To: Your message of "Wed, 28 Jan 1998 02:28:46 -0800." <199801281028.CAA01011@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
Making this work neatly with gas would be, er, fun. And I invite you
to understand the code in the div0 directory. 8)
> To put it another way , Descent I will make one hell of a splash screen 8)
Sure. Just need a few keen punters with some time on their hands.
--
\\ Sometimes you're ahead, \\ Mike Smith
\\ sometimes you're behind. \\ mike@smith.net.au
\\ The race is long, and in the \\ msmith@freebsd.org
\\ end it's only with yourself. \\
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