From 7cd0ae66b2c452040949687af40d6204e5849fb1 Mon Sep 17 00:00:00 2001
From: dsl <dsl@NetBSD.org>
Date: Fri, 7 Feb 2014 19:32:50 +0000
Subject: [PATCH] Remove the splurious check for EN_SW_DATACHAIN when looking
 at mxcsr traps. The relevant bit is always masked out higher up. The only
 place I can find a reference to a 'datachain' error is for the   weitek 1167
 fpu. Even the 8087 has the corresponding bit of the x87   status reserved.
 Quite why it has appeared here is anybodies guess.

---
 sys/arch/i386/i386/trap.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/sys/arch/i386/i386/trap.c b/sys/arch/i386/i386/trap.c
index 4da46574de19..8875da548338 100644
--- a/sys/arch/i386/i386/trap.c
+++ b/sys/arch/i386/i386/trap.c
@@ -1,4 +1,4 @@
-/*	$NetBSD: trap.c,v 1.269 2014/01/26 19:16:17 dsl Exp $	*/
+/*	$NetBSD: trap.c,v 1.270 2014/02/07 19:32:50 dsl Exp $	*/
 
 /*-
  * Copyright (c) 1998, 2000, 2005, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -68,7 +68,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.269 2014/01/26 19:16:17 dsl Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.270 2014/02/07 19:32:50 dsl Exp $");
 
 #include "opt_ddb.h"
 #include "opt_kgdb.h"
@@ -220,8 +220,6 @@ xmm_si_code(struct lwp *l)
 		return FPE_FLTOVF;
 	case EN_SW_UNDERFLOW:
 		return FPE_FLTUND;
-	case EN_SW_DATACHAIN:
-		return FPE_FLTSUB;
 	case 0:
 	default:
 		return 0;