From: "Maciej W. Rozycki" <macro@linux-mips.org>
To: Eric Christopher <echristo@redhat.com>
Cc: Thiemo Seufer <ths@networkno.de>,
newlib@sources.redhat.com, binutils@sources.redhat.com,
cgd@broadcom.com
Subject: Re: [patch] adjust libgloss addresses for 64-bit
Date: Fri, 15 Apr 2005 17:03:00 -0000 [thread overview]
Message-ID: <Pine.LNX.4.61L.0504151758180.23166@blysk.ds.pg.gda.pl> (raw)
In-Reply-To: <1113583817.4591.68.camel@localhost.localdomain>
On Fri, 15 Apr 2005, Eric Christopher wrote:
> > > > leaving us with a zero-extended value in a register which is
> > > > unpredictable as far as the standard (and at least one chip out there)
> >
> > Hmm, 0x80000000 should be a valid XKUSEG address...
> >
>
> Nothing wrong with the address, but it's loaded as:
>
> ori $2,0x8000
> dsll $2,$2,0x10
>
> so it's zero extended and not sign extended as it should be.
Of course it is zero-extended. Otherwise it would be a different one;
actually in the CKSEG0 space rather than XKUSEG. If you want the former,
what's wrong with 0xffffffff80000000? -- please keep in mind we are
talking about 64-bit addressing.
Maciej
next prev parent reply other threads:[~2005-04-15 17:03 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-04-14 22:08 Eric Christopher
2005-04-14 22:38 ` Thiemo Seufer
2005-04-15 10:32 ` Maciej W. Rozycki
2005-04-15 11:28 ` Thiemo Seufer
2005-04-15 16:50 ` Eric Christopher
2005-04-15 19:37 ` Thiemo Seufer
2005-04-15 16:50 ` Eric Christopher
2005-04-15 17:03 ` Maciej W. Rozycki [this message]
2005-04-15 17:07 ` Eric Christopher
2005-04-18 12:46 ` Maciej W. Rozycki
2005-04-15 17:18 ` Thiemo Seufer
2005-04-15 17:35 ` Paul Koning
2005-04-15 18:56 ` Maciej W. Rozycki
2005-04-15 19:25 ` Paul Koning
2005-04-15 19:28 ` Paul Koning
2005-04-15 19:35 ` Thiemo Seufer
2005-04-16 10:26 ` Richard Sandiford
2005-04-15 20:57 ` cgd
2005-04-18 12:58 ` Maciej W. Rozycki
2005-04-18 19:32 ` Eric Christopher
2005-04-16 10:31 ` Richard Sandiford
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