From: jbs30000 AT aol DOT com (Joel)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: One final inline assembly constraint question.
Date: 25 Jul 2003 16:53:48 -0700
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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.
OK, thanks for the info.