From: David Gibson <david@gibson.dropbear.id.au>
To: BALATON Zoltan <balaton@eik.bme.hu>
Cc: qemu-devel@nongnu.org, qemu-ppc@nongnu.org,
Alexander Graf <agraf@suse.de>
Subject: Re: [Qemu-devel] [PATCH] target/ppc: Fix reserved bit mask of dstst instruction
Date: Wed, 28 Mar 2018 11:39:00 +1100 [thread overview]
Message-ID: <20180328003900.GF3510@umbus.fritz.box> (raw)
In-Reply-To: <alpine.BSF.2.21.1803260518540.80357@zero.eik.bme.hu>
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On Mon, Mar 26, 2018 at 05:24:12AM +0200, BALATON Zoltan wrote:
> On Mon, 26 Mar 2018, David Gibson wrote:
> > On Mon, Mar 26, 2018 at 01:54:28AM +0200, BALATON Zoltan wrote:
> > > According to the Vector/SIMD extension documentation bit 6 that is
> > > currently masked is valid (listed as transient bit) but bits 7 and 8
> > > should be reserved instead. Fix the mask to match this.
> >
> > What document can I find information on dstst in? The ISA documents I
> > have handy are either too early (the instruction didn't exist yet) or
> > too late (the instruction was considered obsolete and no details are
> > given).
>
> I've found it in "PowerPC Microprocessor Family: Vector/SIMD Multimedia
> Extension Technology Programming Environments Manual" Version 2.06 which was
> the first one Google found. According to this document dstst should have the
> same reserved bits as dst.
Thanks.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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next prev parent reply other threads:[~2018-03-28 0:39 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-03-25 23:54 [Qemu-devel] [PATCH] target/ppc: Fix reserved bit mask of dstst instruction BALATON Zoltan
2018-03-26 2:20 ` David Gibson
2018-03-26 3:24 ` BALATON Zoltan
2018-03-28 0:39 ` David Gibson [this message]
2018-03-28 0:38 ` David Gibson
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