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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.
This commit is contained in:
dsl 2014-02-07 19:32:50 +00:00
parent 9f33b0ead1
commit 7cd0ae66b2
1 changed files with 2 additions and 4 deletions
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6
sys/arch/i386/i386/trap.c
View File

@ -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;