Re: [RFC/RFA] Proper mnemonics for VIA PadLock (i386) instructions

["H. J. Lu" <hjl@lucon.org>]

On Wed, Apr 13, 2005 at 08:55:09PM +0200, Mark Kettenis wrote:
>    Date: Wed, 13 Apr 2005 10:07:55 +0930
>    From: Alan Modra <amodra@bigpond.net.au>
> 
>    On Tue, Apr 12, 2005 at 10:43:10PM +0200, Mark Kettenis wrote:
>    > Because there is already code out there that uses the hyphen.  The
>    > reason for preferring the hyphenated names over the unhyphenated names
>    > is that the former are used by the VIA documentation.
> 
>    I don't like the idea of putting '-' in mnemonic_chars.  I think it has
>    a high likelihood of breaking other valid assembly.  The gas app.c code
>    has a nasty habit of completely removing whitespace once past the
>    mnemonic of an instruction, and it can get confused.  Something like
> 
>     addr16 mov -2,%eax
> 
>    might fail if '-' is a valid mnemonic char.
> 
> Well, it doesn't fail.  The patch to tc-i386.c to allow '-' as a
> mnemonic char has been in the OpenBSD tree for more than a year now.
> That means all major Open Source software has been compiled with it.
> So I'd expect any problems with it would have surfaced by now.
> 

I have the same concern as Alan. Unless ALL x86 assembly codes, open
source or otherwise, not just those on OpenBSD, have been assembled
correctly with the modified assembler, I don't think it should go into
the FSF assembler.


H.J.