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57 lines
1.2 KiB
C
57 lines
1.2 KiB
C
/*
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* This file is part of GNU CC.
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*
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* GNU CC is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2, or (at your
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* option) any later version.
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*
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* GNU CC is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public
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* License along with GNU CC; see the file COPYING. If not, write
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* to the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#include <common.h>
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#if !defined(CONFIG_SYS_NIOS_MULT_HW) && !defined(CONFIG_SYS_NIOS_MULT_MSTEP)
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#include "math.h"
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USItype __mulsi3 (USItype a, USItype b)
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{
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USItype c = 0;
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while (a != 0) {
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if (a & 1)
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c += b;
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a >>= 1;
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b <<= 1;
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}
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return c;
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}
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UHItype __mulhi3 (UHItype a, UHItype b)
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{
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UHItype c = 0;
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while (a != 0) {
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if (a & 1)
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c += b;
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a >>= 1;
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b <<= 1;
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}
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return c;
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}
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#endif /*!defined(CONFIG_SYS_NIOS_MULT_HW) && !defined(CONFIG_SYS_NIOS_MULT_MSTEP) */
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