From: Ralf Baechle <ralf@linux-mips.org>
To: "Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>,
Mike Uhler <uhler@mips.com>,
Linux/MIPS Development <linux-mips@linux-mips.org>
Subject: Re: unaligned load in branch delay slot
Date: Tue, 28 Jan 2003 13:54:53 +0100 [thread overview]
Message-ID: <20030128135453.B27977@linux-mips.org> (raw)
In-Reply-To: <Pine.GSO.3.96.1030128130651.22934A-100000@delta.ds2.pg.gda.pl>; from macro@ds2.pg.gda.pl on Tue, Jan 28, 2003 at 01:30:03PM +0100
On Tue, Jan 28, 2003 at 01:30:03PM +0100, Maciej W. Rozycki wrote:
> Actually I have a datasheet for the Vr4121 (which is a Vr4120 plus some
> glue logic for specific peripherals) and it explicitly states whenever
> cp0.EPC points to a preceding branch/jump of a faulting instruction, the
> cp0.Cause.BD bit is set. Maybe there is an errata sheet available.
Honestly I'd not expect this to be documented in a NEC manual - they
basically look like the description of the processor core is the same for
basically all the Vr4xxx processors and SOCs.
> Additionally the processor is "nice" enough to implement the MIPS III ISA
> (with the MIPS16 extension) except ll/sc, lld/scd, sigh... So the
> emulation would need to be ported to the 64-bit kernel if we were to
> support this processor in the 64-bit mode.
Maximum agreement on the "sigh" part ...
Ralf
next prev parent reply other threads:[~2003-01-28 12:55 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-13 16:13 unaligned load in branch delay slot Geert Uytterhoeven
2003-01-13 17:19 ` Mike Uhler
2003-01-13 17:19 ` Mike Uhler
2003-01-13 18:04 ` Geert Uytterhoeven
2003-01-13 20:12 ` Mike Uhler
2003-01-13 20:12 ` Mike Uhler
2003-01-28 2:39 ` Ralf Baechle
2003-01-28 9:30 ` Geert Uytterhoeven
2003-01-28 11:47 ` Ralf Baechle
2003-01-28 12:27 ` Geert Uytterhoeven
2003-01-29 1:39 ` Brad Parker
2003-01-29 6:40 ` Ralf Baechle
2003-01-28 12:30 ` Maciej W. Rozycki
2003-01-28 12:54 ` Ralf Baechle [this message]
2003-01-28 17:53 ` Jun Sun
2003-01-28 19:48 ` Mike Uhler
2003-01-28 19:48 ` Mike Uhler
2003-01-28 21:30 ` [OT] " justinca
2003-01-28 21:39 ` Mike Uhler
2003-01-28 21:39 ` Mike Uhler
2003-01-29 14:25 ` Ralf Baechle
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