nios2: fix div64 issue for gcc4

This patch fixes the run-time error on div64 when built with
gcc4, which was reported by jhwu0625 on nios forum. It merges
math support from libgcc of gcc4. This patch is copied from
nios2-linux.

It works with both gcc3 and gcc4. The old mult.c, divmod.c and
math.h are removed.

Signed-off-by: Thomas Chou <thomas@wytron.com.tw>
Signed-off-by: Scott McNutt <smcnutt@psyent.com>

1 files changed, 0 insertions, 101 deletions

diff --git a/arch/nios2/lib/divmod.c b/arch/nios2/lib/divmod.c
deleted file mode 100644
index 3c7e71e97..000000000
--- a/arch/nios2/lib/divmod.c
+++ /dev/null
@@ -1,101 +0,0 @@
-/*
- * This file is part of GNU CC.
- *
- * GNU CC is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published
- * by the Free Software Foundation; either version 2, or (at your
- * option) any later version.
- *
- * GNU CC is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public
- * License along with GNU CC; see the file COPYING.  If not, write
- * to the Free Software Foundation, 59 Temple Place - Suite 330,
- * Boston, MA 02111-1307, USA.
- */
-
-
-#include "math.h"
-
-USItype udivmodsi4 (USItype num, USItype den, word_type modwanted)
-{
-	USItype bit = 1;
-	USItype res = 0;
-
-	while (den < num && bit && !(den & (1L << 31))) {
-		den <<= 1;
-		bit <<= 1;
-	}
-	while (bit) {
-		if (num >= den) {
-			num -= den;
-			res |= bit;
-		}
-		bit >>= 1;
-		den >>= 1;
-	}
-	if (modwanted)
-		return num;
-	return res;
-}
-
-
-SItype __divsi3 (SItype a, SItype b)
-{
-	word_type neg = 0;
-	SItype res;
-
-	if (a < 0) {
-		a = -a;
-		neg = !neg;
-	}
-
-	if (b < 0) {
-		b = -b;
-		neg = !neg;
-	}
-
-	res = udivmodsi4 (a, b, 0);
-
-	if (neg)
-		res = -res;
-
-	return res;
-}
-
-
-SItype __modsi3 (SItype a, SItype b)
-{
-	word_type neg = 0;
-	SItype res;
-
-	if (a < 0) {
-		a = -a;
-		neg = 1;
-	}
-
-	if (b < 0)
-		b = -b;
-
-	res = udivmodsi4 (a, b, 1);
-
-	if (neg)
-		res = -res;
-
-	return res;
-}
-
-
-SItype __udivsi3 (SItype a, SItype b)
-{
-	return udivmodsi4 (a, b, 0);
-}
-
-
-SItype __umodsi3 (SItype a, SItype b)
-{
-	return udivmodsi4 (a, b, 1);
-}