From: Nathan Froyd <froydnj@codesourcery.com>
To: Aurelien Jarno <aurelien@aurel32.net>
Cc: Peter Maydell <peter.maydell@linaro.org>,
qemu-devel@nongnu.org, Alexander Graf <agraf@suse.de>
Subject: [Qemu-devel] Re: [PATCH v2 1/2] target-ppc: fix sNaN propagation
Date: Thu, 13 Jan 2011 09:27:22 -0800 [thread overview]
Message-ID: <20110113172718.GM6247@codesourcery.com> (raw)
In-Reply-To: <1294857768-22871-1-git-send-email-aurelien@aurel32.net>
On Wed, Jan 12, 2011 at 07:42:47PM +0100, Aurelien Jarno wrote:
> The current FPU code returns 0.0 if one of the operand is a
> signaling NaN and the VXSNAN exception is disabled.
>
> fload_invalid_op_excp() doesn't return a qNaN in case of a VXSNAN
> exception as the operand should be propagated instead of a new
> qNaN to be generated. Fix that by calling fload_invalid_op_excp()
> only for the exception generation (if enabled), and use the softfloat
> code to correctly compute the result.
>
> Cc: Alexander Graf <agraf@suse.de>
> Cc: Peter Maydell <peter.maydell@linaro.org>
> Cc: Nathan Froyd <froydnj@codesourcery.com>
> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Nathan Froyd <froydnj@codesourcery.com>
-Nathan
prev parent reply other threads:[~2011-01-13 17:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-12 18:42 [Qemu-devel] [PATCH v2 1/2] target-ppc: fix sNaN propagation Aurelien Jarno
2011-01-12 18:42 ` [Qemu-devel] [PATCH 2/2] target-ppc: fix wrong NaN tests Aurelien Jarno
2011-01-13 17:27 ` [Qemu-devel] " Nathan Froyd
2011-01-13 17:27 ` Nathan Froyd [this message]
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