From: David Daney <ddaney@avtrex.com>
To: David Daney <ddaney@avtrex.com>
Cc: "Maciej W. Rozycki" <macro@linux-mips.org>,
Ralf Baechle <ralf@linux-mips.org>,
Richard Sandiford <rsandifo@nildram.co.uk>,
GCC Mailing List <gcc@gcc.gnu.org>,
linux-mips@linux-mips.org
Subject: Re: MIPS atomic memory operations (A.K.A PR 33479).
Date: Wed, 19 Sep 2007 10:47:42 -0700 [thread overview]
Message-ID: <46F160BE.9030500@avtrex.com> (raw)
In-Reply-To: <46F15BB3.50107@avtrex.com>
David Daney wrote:
> Maciej W. Rozycki wrote:
>> On Wed, 19 Sep 2007, Ralf Baechle wrote:
>>
>>> Please make this loop closure branch a branch-likely. This is necessary
>>> as a errata workaround for some processors.
>>
>> Do we emulate them for MIPS I? We do emulate "ll" and "sc" and
>> adding "sync" is easy
>
> Currently, I (and thus GCC 4.3) am assuming that Linux emulates 'll',
> 'sc' and 'sync', If sync is not emulated, we would need to adjust the
> code generation so that it is not emitted on ISAs that don't support it.
>
I just checked myself. 'sync' is not emulated. We will have to make a
change so that it is not emitted on ISAs that do not support it.
David Daney
next prev parent reply other threads:[~2007-09-19 17:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-19 0:12 MIPS atomic memory operations (A.K.A PR 33479) David Daney
2007-09-19 2:32 ` Daniel Jacobowitz
2007-09-19 8:45 ` Thiemo Seufer
2007-09-19 16:58 ` Ralf Baechle
2007-09-19 17:07 ` Maciej W. Rozycki
2007-09-19 17:26 ` David Daney
2007-09-19 17:46 ` Maciej W. Rozycki
2007-09-19 17:49 ` David Daney
2007-09-19 18:12 ` Thiemo Seufer
2007-09-19 18:28 ` Ralf Baechle
2007-09-19 17:47 ` David Daney [this message]
2007-09-19 18:08 ` Maciej W. Rozycki
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