From: "Benjamin Kalytta" <bkausbk AT web DOT de>
Newsgroups: comp.os.msdos.djgpp
Subject: extended assembler
Date: Sat, 13 Oct 2001 03:03:10 +0200
Organization: T-Online
Lines: 16
Message-ID: <9q8418$23s$00$1@news.t-online.com>
Mime-Version: 1.0
Content-Type: text/plain;
	charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
X-Trace: news.t-online.com 1002935144 00 2172 chkWS4hSLY407 011013 01:05:44
X-Complaints-To: abuse AT t-online DOT com
X-Sender: 520031135094-0001 AT t-dialin DOT net
X-Priority: 3
X-MSMail-Priority: Normal
X-Newsreader: Microsoft Outlook Express 6.00.2600.0000
X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

I just can understand how extended assembly work in gcc. I want to
define a assembler function which set EDX Register with first
argument.

If I do following I got errormessage "warning: call-clobbered register
used for global register variable"

register int _edx asm("%edx");
#define SetError(x)  (_edx=x)

I think extended assembler like asm("movl %0,%%edx": "=p" (x)); should
be used, but how ? It just doesn't work.

benjamin