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Re: [MIPS] Check FCSR for pending interrupts before restoring from a con

To: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Subject: Re: [MIPS] Check FCSR for pending interrupts before restoring from a context.
From: "Maciej W. Rozycki" <macro@linux-mips.org>
Date: Wed, 7 Feb 2007 17:29:02 +0000 (GMT)
Cc: ralf@linux-mips.org, linux-mips@linux-mips.org
In-reply-to: <20070208.012216.103777705.anemo@mba.ocn.ne.jp>
Original-recipient: rfc822;linux-mips@linux-mips.org
References: <S20038814AbXBEQMb/20070205161231Z+24864@ftp.linux-mips.org> <20070207.133809.71085888.nemoto@toshiba-tops.co.jp> <20070207110929.GA17660@linux-mips.org> <20070208.012216.103777705.anemo@mba.ocn.ne.jp>
Sender: linux-mips-bounce@linux-mips.org
On Thu, 8 Feb 2007, Atsushi Nemoto wrote:

> If the format of FCSR was common to all CPU (I hope so), we can do
> check it in caller of fp_restore_context(), in C language.

 The R3010, etc. use bits 23 and 17:0 the same way as the R4000 and MIPS 
architecture processors do.  The other bits are unused and hardwired to 
zeroes.

  Maciej

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