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From: ludovic.courtes@laas.fr (Ludovic Courtès)
Cc: guile-user@gnu.org
Subject: Re: Fetch-and-store for PowerPC...  and more!
Date: Thu, 17 Mar 2005 09:29:28 +0100	[thread overview]
Message-ID: <87k6o6ad5j.fsf@laas.fr> (raw)
In-Reply-To: <87br9j895c.fsf@zip.com.au> (Kevin Ryde's message of "Thu, 17 Mar 2005 10:26:39 +1100")

Hi,

Kevin Ryde <user42@zip.com.au> writes:

> I think "1:" is a gas-ism, it might not work on aix and macos.  But
> dunno if guile actually runs at all on those systems at the moment.

Well, the GAS documentation doesn't mention any syntax incompatibilities
in the `PPC-Dependent' node, so I don't know whether this is really is a
GAS-ism.

>> +       : "=&r" (fet)				\
>> +       : "r" (mem), "r" (sto));			\
>
> I think "mem" should be in the outputs too, since it's changed.

I don't think so since `mem', as an address, isn't changed.

However, the Glibc implementation rightfully adds the following list of
clobbered registers:

  : "cr0", "memory"

(`cr0' is being modified by `stwcx.' while `memory' denotes the
reservation bit I guess).

This should be added to the patch I sent.

Thanks,
Ludovic.


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  reply	other threads:[~2005-03-17  8:29 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-03-16  8:48 Fetch-and-store for PowerPC... and more! Ludovic Courtès
2005-03-16 23:26 ` Kevin Ryde
2005-03-17  8:29   ` Ludovic Courtès [this message]
2005-03-17 20:48     ` Kevin Ryde
2005-03-18  9:26   ` Marius Vollmer

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