| /* libgcc routines for MeP. |
| Copyright (C) 2001-2014 Free Software Foundation, Inc. |
| |
| This file 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 3 of the License, or (at your |
| option) any later version. |
| |
| This file 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. |
| |
| Under Section 7 of GPL version 3, you are granted additional |
| permissions described in the GCC Runtime Library Exception, version |
| 3.1, as published by the Free Software Foundation. |
| |
| You should have received a copy of the GNU General Public License and |
| a copy of the GCC Runtime Library Exception along with this program; |
| see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| typedef int SItype __attribute__ ((mode (SI))); |
| typedef unsigned int USItype __attribute__ ((mode (SI))); |
| |
| typedef int word_type __attribute__ ((mode (__word__))); |
| |
| USItype |
| __mulsi3 (USItype a, USItype b) |
| { |
| USItype c = 0; |
| |
| while (a != 0) |
| { |
| if (a & 1) |
| c += b; |
| a >>= 1; |
| b <<= 1; |
| } |
| |
| return c; |
| } |
| |
| |
| |
| 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); |
| } |