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From: jon@eps2.UUCP
Newsgroups: comp.sys.m68k,comp.lang.c
Subject: porting 16-bit int to 32-bit int with asm code
Message-ID: <67@eps2.UUCP>
Date: Tue, 24-Mar-87 04:06:08 EST
Article-I.D.: eps2.67
Posted: Tue Mar 24 04:06:08 1987
Date-Received: Thu, 26-Mar-87 07:20:03 EST
Organization: Scumtronics Inc.
Lines: 34
Keywords: 10MB of code, assembler syntax
Xref: utgpu comp.sys.m68k:279 comp.lang.c:1320


Hello,

I may soon have the pleasure of porting about 10MB of code from our current
machine to a new machine.  99% of it is in C, and about 1% in 680x0 assembly
language.  One of the problems I see is that on the old machine ints were
16-bits and on the new machine ints are 32-bits.  Well, that's fine in C
but in assembly language functions there are a bunch of lines which take
function arguments off the stack and put them into registers like:

	movem	20(a6), d5-d7

which will now have to say:

	movem.l	20(a6), d5-d7


Also, the stupid assembler syntax is different so it really has to be:

	moveml	a6@(20), d5-57


Has anyone ever had to do something similar?  Any advice to offer?
I guess I'll use awk, or write a program using lex to convert the
asm stuff, even though I'll have to look at all the asm files anyway.
Does anyone have a program to do this laying around?  Thanks in
advance.


Bitchin' Camaro!		Jonathan Hue
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(c) The Dead Milkmen, 1985	{amdcad!cae780,sun!sunncal}!leadsv!eps2!jon