From: lonniem AT cs DOT utexas DOT edu (Lonnie McCullough)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Newbee question
Date: Wed, 09 Jul 1997 00:51:22 GMT
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To: djgpp AT delorie DOT com
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On Fri, 04 Jul 1997 14:01:36 GMT, keijo DOT koivula AT pp DOT inet DOT fi (Atte A.
Koivula) wrote:
>Hi,
>
>I'm kinda new with DJGPP and programming alike, and was just wondering
>how to link external (n)asm-modules with C/C++ code (I think it's done
>by just linking the external asm-modules with C/C++ -modules with GCC,
>but haven't had the courage to try it out :P), learning AT&T syntax is
>frustrating and the TA2AS-syntax converter is somehow a bit weird... I
>can't even get it translate a simple display-type setting -piece of
>code (uh):
>
>mov ah, 0
>mov al,13h
>int 10h
>
>(what would that look like with AT&T syntax?)
>
>I'm aware of Allegro, JLib, SVGAlib etc, but I prefer to learn things
>"the hard way" before starting to use fancy-pants libraries :P
to link an external asm module just assemble it then on the command
line type
  gcc -o whatever.exe asmcode.o
or to have gas assemble your asm stuff do
  gcc -o asmcode.o -c asmcode.s
and gcc will invoke gas correctly to assemble your code after which
you can use the first command I showed you
or to do it all at once just do
  gcc -o test.exe test1.c test2.c asmcode.s -Wall
and everything will be compiled and assembled for you (except you
won't have the benefit of .o object files)

AT&T syntax stuff:
movb $0,%ah
movb $0x13,%al
int $0x10

Hope this helps.

Lonnie McCullough
lonniem AT cs DOT utexas DOT edu