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 [thread overview]
Message-ID: <199709251700.NAA21402@subrogation.cygnus.com> (raw)
In-Reply-To: <Pine.BSF.3.96.970925073710.16864A-100000@vespucci.advicom.net>
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
next prev parent reply other threads:[~1997-09-25 10:00 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
1997-09-25 6:16 Joel Sherrill
1997-09-25 10:00 ` Ian Lance Taylor [this message]
1997-09-25 10:28 ` Joel Sherrill
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