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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [config/] [m32c/] [m32c-lib2.c] - Rev 378
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/* libgcc routines for R8C/M16C/M32C Copyright (C) 2005, 2009 Free Software Foundation, Inc. Contributed by Red Hat. This file is part of GCC. GCC 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. GCC 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 sint32_type __attribute__ ((mode (SI))); typedef unsigned int uint32_type __attribute__ ((mode (SI))); typedef int word_type __attribute__ ((mode (__word__))); uint32_type udivmodsi4 (uint32_type, uint32_type, word_type); sint32_type __divsi3 (sint32_type, sint32_type); sint32_type __modsi3 (sint32_type, sint32_type); uint32_type udivmodsi4 (uint32_type num, uint32_type den, word_type modwanted) { uint32_type bit = 1; uint32_type 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; } sint32_type __divsi3 (sint32_type a, sint32_type b) { word_type neg = 0; sint32_type 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; } sint32_type __modsi3 (sint32_type a, sint32_type b) { word_type neg = 0; sint32_type res; if (a < 0) { a = -a; neg = 1; } if (b < 0) b = -b; res = udivmodsi4 (a, b, 1); if (neg) res = -res; return res; } /* See the comment by the definition of LIBGCC2_UNITS_PER_WORD in m32c.h for why we are creating extra versions of some of the functions defined in libgcc2.c. */ #define LIBGCC2_UNITS_PER_WORD 2 #define L_clzsi2 #define L_ctzsi2 #define L_ffssi2 #define L_paritysi2 #define L_popcountsi2 #include "libgcc2.c" uint32_type __udivsi3 (uint32_type a, uint32_type b) { return udivmodsi4 (a, b, 0); } uint32_type __umoddi3 (uint32_type a, uint32_type b) { return udivmodsi4 (a, b, 1); }
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