From: jbs30000 AT aol DOT com (Joel)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: One final inline assembly constraint question.
Date: 26 Jul 2003 10:28:38 -0700
Organization: http://groups.google.com/
Lines: 20
Message-ID: <84e4e2a9.0307260928.217a9482@posting.google.com>
References: <84e4e2a9 DOT 0307242201 DOT 4c8dbb84 AT posting DOT google DOT com> <2c7Ua.13946$OM3 DOT 3560 AT news-server DOT bigpond DOT net DOT au>
NNTP-Posting-Host: 205.188.208.170
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 8bit
X-Trace: posting.google.com 1059240519 24066 127.0.0.1 (26 Jul 2003 17:28:39 GMT)
X-Complaints-To: groups-abuse AT google DOT com
NNTP-Posting-Date: 26 Jul 2003 17:28:39 GMT
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Ben Peddell <killer DOT lightspeed AT bigpond DOT com> wrote in message news:<2c7Ua.13946$OM3 DOT 3560 AT news-server DOT bigpond DOT net DOT au>...
> Joel wrote:
> > I have read up on, and am now pretty familiar with the usual "a" =
> > eax, "S" = esi, and so on, but I'd like an example of one of the
> > following please.
> > "<" Autodecrement addressing memory
> > ">" Autoincrement addressing memory
> > Thank you.
> 
> Unfortunately, gcc does not accept ">" and "<" on the x86 (inconsistent 
> operand constraints in an `asm'). It'll bypass the '<' or '>' if you 
> specify another constraint with it (Multiple Alternative).
> Perhaps because there are no implicitly auto-increment or auto-decrement 
> registers on the x86.
> 
> If it did accept '<' and '>', then it could cld / std and use ESI for 
> the output memory operand and EDI for the input memory operand.
I tried thanking you for your help, but something obviously went wrong
with the last message I tried posting, so I'm trying this again.  I
hope it posts OK this time.