From:	"d-range!" <d-range AT thefridge DOT et DOT fnt DOT hvu DOT nl>
Newsgroups:	comp.os.msdos.djgpp
Subject:	WATCOM #pragma to DJGPP __asm__ ?!!
Date:	25 Jan 1998 21:13:39 GMT
Organization:	World Online
Lines:	43
Message-ID:	<01bc0b04$94dfc940$6089f1c3@faktor21>
NNTP-Posting-Host:	hlv1-p96.worldonline.nl
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Heya,

I recently decided to switch from WATCOM to DJGPP, to make my code more
portable, but I ran into the following 'problem' making the code compilable
under DJGPP:

In WATCOM I used #pragma's to define inline functions - example:

typedef Fixed int;

Fixed FixSHR(Fixed,char);

#pragma aux FixSHR="sar eax,cl",\
		          parm [eax] [ecx] modify [eax] value [eax];

void main(void)
{
   Fixed a,b;

   a=FixSHR(b,2);  // so a=4*b ;))
}

My question: how can I make inline functions like this one to work with
DJGPP. I read the DJGPP assembler tutorial, and I know you can #define the
function like this,

#define FixSHR(arg1,arg2,arg3) __asm__ \
            "sarl %1,%0" \
	: "=r" (arg3) \
	: "0" (arg1), "1" (arg2) \
	: "0";

or something like that. The result will be in arg3 I think. Since I don't
feel like rewriting every FixMul(), FixDiv(), FixSHR(), FixSHL() etc (there
are 1000s of 'em ;-( ) I was wondering if someone knows a way to make it
work like it did with watcom. I'd be grateful ;)

regards,    

 =============================================
 d-range! - coder     <d-range AT thefridge DOT et DOT fnt DOT hvu DOT nl>
=============================================

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