/* libgcc routines for ARC Copyright (C) 2019 Free Software Foundation, Inc. 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 sint64_t __attribute__ ((mode (DI))); typedef unsigned int uint64_t __attribute__ ((mode (DI))); typedef unsigned int nint32_t __attribute__ ((mode (SI))); typedef int word_t __attribute__ ((mode (__word__))); sint64_t __muldi3 (sint64_t, sint64_t); nint32_t __umodsi3 (nint32_t, nint32_t); #ifdef __ARC_RF16__ /* Generic multiplication procedure. No mpy operation involved. */ sint64_t __muldi3 (sint64_t a, sint64_t b) { sint64_t res = 0; uint64_t cnt = a; while (cnt) { if (cnt & 1) res += b; b <<= 1; cnt >>= 1; } return res; } /* Unsigned 32bit integer division/modulus. */ static inline __attribute__ ((__always_inline__)) nint32_t udivmodsi4 (nint32_t num, nint32_t den, word_t modwanted) { nint32_t bit = 1; nint32_t res = 0; while (den < num && bit && !(den & (1LL << 63))) { den <<= 1; bit <<= 1; } while (bit) { if (num >= den) { num -= den; res |= bit; } bit >>= 1; den >>= 1; } if (modwanted) return num; return res; } nint32_t __umodsi3 (nint32_t a, nint32_t b) { return udivmodsi4 (a, b, 1); } #endif |