From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Lance Taylor <ian@cygnus.com>
To: joel@OARcorp.com
Cc: gas2@cygnus.com
Subject: Re: binutils bug you reported (fwd)
Date: Thu, 25 Sep 1997 10:00:00 -0000
Message-id: <199709251700.NAA21402@subrogation.cygnus.com>
References: <Pine.BSF.3.96.970925073710.16864A-100000@vespucci.advicom.net>
X-SW-Source: 1997/msg00018.html

   Date: Thu, 25 Sep 1997 07:38:20 -0500 (CDT)
   From: Joel Sherrill <joel@OARcorp.com>

   2. 'tblu.w a0@,d0' won't assemble. The error message tells something about
	   'invalid operand'. The table lookup and interpolate opcode  
   (tbls, tblsn,
	   tblu, tblun) allows two types of operands:

	     eg:
		   tblu.<size>     <ea>,Dx
		   tblu.<size>     Dym:Dyn,Dx

Interesting.  My basic Motorola manual says that tbls does not permits
a0@, although it does permit a0@-, and that is what gas implements.
However, the manual also says that tblu permits both a0@ and a0@-, and
gas does not implement that.

I checked a CPU32 specific manual, and it says that both instructions
support a0@, and neither supports a0@-.

I couldn't get any useful information from the Motorola web site.

Since a0@- doesn't really make sense for these instructions, I'll
change gas to not permit a0@-, but to permit a0@, for both.

Either way, the submitted patch is wrong, since it permits operand
types which are not actually permitted.

Ian