--- zzzz-none-000/linux-3.10.107/arch/mips/math-emu/dp_simple.c	2017-06-27 09:49:32.000000000 +0000
+++ scorpion-7490-727/linux-3.10.107/arch/mips/math-emu/dp_simple.c	2021-02-04 17:41:59.000000000 +0000
@@ -5,8 +5,6 @@
  * MIPS floating point support
  * Copyright (C) 1994-2000 Algorithmics Ltd.
  *
- * ########################################################################
- *
  *  This program is free software; you can distribute it and/or modify it
  *  under the terms of the GNU General Public License (Version 2) as
  *  published by the Free Software Foundation.
@@ -18,68 +16,34 @@
  *
  *  You should have received a copy of the GNU General Public License along
  *  with this program; if not, write to the Free Software Foundation, Inc.,
- *  59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
- *
- * ########################################################################
+ *  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA.
  */
 
-
 #include "ieee754dp.h"
 
-int ieee754dp_finite(ieee754dp x)
+union ieee754dp ieee754dp_neg(union ieee754dp x)
 {
-	return DPBEXP(x) != DP_EMAX + 1 + DP_EBIAS;
-}
+	unsigned int oldrm;
+	union ieee754dp y;
 
-ieee754dp ieee754dp_copysign(ieee754dp x, ieee754dp y)
-{
-	CLEARCX;
-	DPSIGN(x) = DPSIGN(y);
-	return x;
+	oldrm = ieee754_csr.rm;
+	ieee754_csr.rm = FPU_CSR_RD;
+	y = ieee754dp_sub(ieee754dp_zero(0), x);
+	ieee754_csr.rm = oldrm;
+	return y;
 }
 
-
-ieee754dp ieee754dp_neg(ieee754dp x)
+union ieee754dp ieee754dp_abs(union ieee754dp x)
 {
-	COMPXDP;
-
-	EXPLODEXDP;
-	CLEARCX;
-	FLUSHXDP;
-
-	/*
-	 * Invert the sign ALWAYS to prevent an endless recursion on
-	 * pow() in libc.
-	 */
-	/* quick fix up */
-	DPSIGN(x) ^= 1;
-
-	if (xc == IEEE754_CLASS_SNAN) {
-		ieee754dp y = ieee754dp_indef();
-		SETCX(IEEE754_INVALID_OPERATION);
-		DPSIGN(y) = DPSIGN(x);
-		return ieee754dp_nanxcpt(y, "neg");
-	}
-
-	return x;
-}
-
-
-ieee754dp ieee754dp_abs(ieee754dp x)
-{
-	COMPXDP;
-
-	EXPLODEXDP;
-	CLEARCX;
-	FLUSHXDP;
-
-	/* Clear sign ALWAYS, irrespective of NaN */
-	DPSIGN(x) = 0;
-
-	if (xc == IEEE754_CLASS_SNAN) {
-		SETCX(IEEE754_INVALID_OPERATION);
-		return ieee754dp_nanxcpt(ieee754dp_indef(), "abs");
-	}
+	unsigned int oldrm;
+	union ieee754dp y;
 
-	return x;
+	oldrm = ieee754_csr.rm;
+	ieee754_csr.rm = FPU_CSR_RD;
+	if (DPSIGN(x))
+		y = ieee754dp_sub(ieee754dp_zero(0), x);
+	else
+		y = ieee754dp_add(ieee754dp_zero(0), x);
+	ieee754_csr.rm = oldrm;
+	return y;
 }