Message-ID:	<3B156A6F.291FC4B3@mailandnews.com>
From:	"J. Weeks" <jweeks AT mailandnews DOT com>
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Newsgroups:	comp.os.msdos.djgpp
Subject:	far calls with inline AT&T
Lines:	21
Date:	Wed, 30 May 2001 17:47:27 -0400
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To:	djgpp AT delorie DOT com
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Reply-To:	djgpp AT delorie DOT com

I'm currently in the process of writting an operating system (well...
trying... it's an "educational thing" :) and I'm having some trouble
with far calls in assembly language.

I want to call a callgate at descriptor 0x28, so my code is as follows:
__asm__(
  "mov $0x28, %ax\n" \
  "mov %ax, %es  \n" \
  "call %es:0x0 \n");

But it keeps telling me its ignoring my prefix (which I assume to be the
%es:... ).  Any ideas why, and how I can go about this far call.

Yeah, I know it's an easy question, but it's been a while since I last
did some serious programming.

Thanks a ton,
Jeff

PS: If possible, could you please respond via email as well, seeing as
my news server is constantly down.  Thanks again.

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