Mail Archives: djgpp/1997/03/15/14:00:35
enigma <enigma AT erols DOT com> wrote in article
<331a4b7c DOT 883291 AT news DOT erols DOT com>...
> On Sat, 01 Mar 1997 19:11:45 GMT, donjr AT erols DOT com (No One Important)
> wrote:
>
> >Is it possible to use in-line assembly language with DJGPP v. 2.0?
> >If it is, can somebody show me the proper method for it?
> >I seem to be screwing it up a lot.
> >
> >David Loose
> >donjr AT erols DOT com
> >
>
> i'm not going to explain it to you here.. (mostly because i'm no
> expert) but yes, inline assembly is in djgpp (very easily for that
> matter). you use a function called asm(). djgpp shoves any assembly
> (at&t asm sytax) direct to gas (gnu assembler).
>
> a quick example is:
>
> asm ( "movl %eax, %ecx\n"
> "movw %ax, %bx");
>
> what this does is move a 32-bit integer from eax to ecx and then a
> 16-bit integer from ax to bx. if you understand at&t syntax, that
> should be obvious. the only thing that should be new is the '\n'
> you must provide a linefeed at the end of an inline asm statement, so
> the asm compiler gets it properly formated. a little anoying, but its
> not that bad. there are many faqs on at&t sytanx and and djgpp inline
> assembly that can help you with more complex stuff like input and
> output fields and more importantly "memory clean up." REMEMBER, the
> assembler assumes nothing. if you took my example and you didn't
> intend to modify those registers globally, then you should have put
> them on the stack and pop'd them when you were done.
>
> i hope other peeps will reply, cause i'm kinda dumb =)
>
> mint
> enigma AT erols DOT com
>
>
>
Will it compile .asm files too?
--
Dennis Moran (aka Coolio)
coolio AT coolio9 DOT com
http://coolio9.com/
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