From 8d52ea6db484c689a75ef8a36a4e525753b8f078 Mon Sep 17 00:00:00 2001 From: Thomas Chou Date: Sat, 15 May 2010 06:00:05 +0800 Subject: 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 Signed-off-by: Scott McNutt --- arch/nios2/lib/divmod.c | 101 ------------------------------------------------ 1 file changed, 101 deletions(-) delete mode 100644 arch/nios2/lib/divmod.c (limited to 'arch/nios2/lib/divmod.c') diff --git a/arch/nios2/lib/divmod.c b/arch/nios2/lib/divmod.c deleted file mode 100644 index 3c7e71e9757..00000000000 --- 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); -} -- cgit v1.2.3