diff options
Diffstat (limited to 'gcc-4.9/libgcc/config/lm32/_udivmodsi4.c')
-rw-r--r-- | gcc-4.9/libgcc/config/lm32/_udivmodsi4.c | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/gcc-4.9/libgcc/config/lm32/_udivmodsi4.c b/gcc-4.9/libgcc/config/lm32/_udivmodsi4.c new file mode 100644 index 000000000..f0a844c08 --- /dev/null +++ b/gcc-4.9/libgcc/config/lm32/_udivmodsi4.c @@ -0,0 +1,53 @@ +/* _udivmodsi4 for Lattice Mico32. + Contributed by Jon Beniston <jon@beniston.com> + + Copyright (C) 2009-2014 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, 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/>. */ + +#include "libgcc_lm32.h" + +/* Unsigned integer division/modulus. */ + +USItype +__udivmodsi4 (USItype num, USItype den, int 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; +} |