From: Grant Grundler <grundler@parisc-linux.org>
To: rhirst@levanta.com
Cc: parisc-linux@lists.parisc-linux.org
Subject: [parisc-linux] ssm/rsm sequences
Date: Tue, 26 Apr 2005 23:20:55 -0600 [thread overview]
Message-ID: <20050427052055.GJ2612@colo.lackof.org> (raw)
In-Reply-To: <20050427022925.GH2612@colo.lackof.org>
On Tue, Apr 26, 2005 at 08:29:25PM -0600, Grant Grundler wrote:
> The example code is just that, an example:
> SSM 0,gr0 ; initial RSM, SSM, or MTSM
> ...
>
> AFAICT, that sequence does nothing but burn some cycles.
*sigh*. The ssm 0,0/nop * 8/rsm sequence isn't so obvious.
Richard Hirst added this comment to entry.S in 2001:
* The ssm is necessary due to a PCXT bug
http://lists.parisc-linux.org/hypermail/parisc-linux-cvs/3628.html
Richard, any clue what the bug is?
I don't have a PCX-T ERS or errata sheet to look this up.
thanks,
grant
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next parent reply other threads:[~2005-04-27 5:20 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20050425165540.GD12325@colo.lackof.org>
[not found] ` <200504251744.j3PHixu9015886@hiauly1.hia.nrc.ca>
[not found] ` <20050427022925.GH2612@colo.lackof.org>
2005-04-27 5:20 ` Grant Grundler [this message]
2005-04-27 6:58 ` [parisc-linux] ssm/rsm sequences Grant Grundler
2005-04-27 7:18 ` Andy Walker
2005-04-27 15:01 ` Grant Grundler
2005-04-27 10:28 ` Joel Soete
2005-04-27 13:27 ` Joel Soete
2005-04-27 15:00 ` Grant Grundler
2005-04-28 14:58 ` Grant Grundler
2005-04-28 15:30 ` Joel Soete
2005-04-28 19:06 ` Grant Grundler
2005-04-28 19:42 ` John David Anglin
2005-04-28 20:20 ` Grant Grundler
2005-04-28 20:35 ` John David Anglin
2005-04-28 20:54 ` James Bottomley
2005-04-27 20:17 ` Grant Grundler
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