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From: Paul Mackerras <paulus@samba.org>
To: Kim Phillips <kim.phillips@freescale.com>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] Add support for FP emulation for the e300c2 core
Date: Mon, 4 Dec 2006 14:23:20 +1100	[thread overview]
Message-ID: <17779.38056.64501.458056@cargo.ozlabs.ibm.com> (raw)
In-Reply-To: <20061122142020.3e700bac.kim.phillips@freescale.com>

Kim Phillips writes:

> The e300c2 has no FPU.  Its MSR[FP] is grounded to zero.  If an attempt
> is made to execute a floating point instruction (including floating-point
> load, store, or move instructions), the e300c2 takes a floating-point
> unavailable interrupt (IVOR7).

Can't you just point IVOR7 at the program check handler on these cpus?

Paul.

  parent reply	other threads:[~2006-12-04  3:23 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2006-11-22 20:20 [PATCH] Add support for FP emulation for the e300c2 core Kim Phillips
2006-11-22 21:34 ` Benjamin Herrenschmidt
2006-11-22 22:09   ` Kim Phillips
2006-12-04  3:23 ` Paul Mackerras [this message]
2006-12-04  4:41   ` Kumar Gala

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