From: Richard Henderson <rth@cygnus.com>
To: Ian Lance Taylor <ian@airs.com>
Cc: cort@attis.cs.nmt.edu, gas2@sourceware.cygnus.com
Subject: Re: ppc instructions in gas
Date: Thu, 06 May 1999 20:13:00 -0000 [thread overview]
Message-ID: <19990506201322.A14952@cygnus.com> (raw)
In-Reply-To: <19990507030530.10843.qmail@daffy.airs.com>
On Fri, May 07, 1999 at 03:05:30AM -0000, Ian Lance Taylor wrote:
> I don't have the context of the original message. The addis/lis
> instruction is documented to take a signed operand. I don't know why
> it makes sense to remove PPC_OPERAND_SIGNED.
Context is that gcc doesn't emit signed, and some of the ppc linux
kernel sources don't use signed values either. This worked for
ppc32 due to the PPC_OPERAND_SIGNOPT hack, and only showed up when
Cort started work on ppc64.
We iterated enough to conclude that we should in fact fix gcc, and
the kernel sources. The one remaining question is whether to continue
to silently accept unsigned values for ppc32, or whether we should
warn for them.
Thoughts on that last?
r~
next prev parent reply other threads:[~1999-05-06 20:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <19990504180843.A31050@attis.cs.nmt.edu>
[not found] ` <19990505145806.H9469@cygnus.com>
[not found] ` <19990505165232.A8594@attis.cs.nmt.edu>
1999-05-06 15:07 ` Richard Henderson
[not found] ` <19990506161159.A27229@attis.cs.nmt.edu>
1999-05-06 15:35 ` Richard Henderson
[not found] ` <19990506171639.A26711@attis.cs.nmt.edu>
1999-05-06 16:56 ` Richard Henderson
[not found] ` <19990506180806.A5113@attis.cs.nmt.edu>
1999-05-06 17:49 ` Richard Henderson
[not found] ` <19990506185754.A12025@attis.cs.nmt.edu>
1999-05-06 18:43 ` Richard Henderson
1999-05-06 20:06 ` Ian Lance Taylor
1999-05-06 20:13 ` Richard Henderson [this message]
1999-05-06 20:43 ` Ian Lance Taylor
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