From: "Carolyn Kelly-Pajot" <dehacked72 AT hotmail DOT com>
References: <345C5040 DOT 4627 AT bluewin DOT ch>
Subject: Re: global variable
Date: Sun, 2 Nov 1997 14:34:51 -0500
Lines: 31
Message-ID: <#T2SpX858GA.253@upnetnews03>
Newsgroups: comp.os.msdos.djgpp
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Precedence: bulk



LEGER Patrick wrote in article <345C5040 DOT 4627 AT bluewin DOT ch>...

>Here's a sample code :
>
>static int t;
>...
>void function(int x)
>{
>  asm("pusha
>       movw $_x,%eax
>       popa");
>}
>After that the compiler say that "x" is unknown.
>But if I load x in t as static and globale variable and put it into %eax
>, the program runs.
>Is there a method to use directly the argument without load them in a
>globale variable ?
>
>thanx

You can pass them as an arguement, as most people want. If you want to load it
into a register, that's fine, be be sure to tell the compiler not to use that
register itself or "x" will be gone.

And remember that if you are using a multi-source-file program, "t" will only be
known to this file. Use extern for that. Otherwise, if you want to load a
variable into a register, that is your choice.