1 1.1 mrg /* _mulsi3 for Lattice Mico32. 2 1.1 mrg Contributed by Jon Beniston <jon (at) beniston.com> 3 1.1 mrg 4 1.1.1.12 mrg Copyright (C) 2009-2024 Free Software Foundation, Inc. 5 1.1 mrg 6 1.1 mrg This file is free software; you can redistribute it and/or modify it 7 1.1 mrg under the terms of the GNU General Public License as published by the 8 1.1 mrg Free Software Foundation; either version 3, or (at your option) any 9 1.1 mrg later version. 10 1.1 mrg 11 1.1 mrg This file is distributed in the hope that it will be useful, but 12 1.1 mrg WITHOUT ANY WARRANTY; without even the implied warranty of 13 1.1 mrg MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 1.1 mrg General Public License for more details. 15 1.1 mrg 16 1.1 mrg Under Section 7 of GPL version 3, you are granted additional 17 1.1 mrg permissions described in the GCC Runtime Library Exception, version 18 1.1 mrg 3.1, as published by the Free Software Foundation. 19 1.1 mrg 20 1.1 mrg You should have received a copy of the GNU General Public License and 21 1.1 mrg a copy of the GCC Runtime Library Exception along with this program; 22 1.1 mrg see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23 1.1 mrg <http://www.gnu.org/licenses/>. */ 24 1.1 mrg 25 1.1 mrg #include "libgcc_lm32.h" 26 1.1 mrg 27 1.1 mrg /* Integer multiplication. */ 28 1.1 mrg 29 1.1 mrg USItype 30 1.1 mrg __mulsi3 (USItype a, USItype b) 31 1.1 mrg { 32 1.1 mrg USItype result; 33 1.1 mrg 34 1.1 mrg result = 0; 35 1.1 mrg 36 1.1 mrg if (a == 0) 37 1.1 mrg return 0; 38 1.1 mrg 39 1.1 mrg while (b != 0) 40 1.1 mrg { 41 1.1 mrg if (b & 1) 42 1.1 mrg result += a; 43 1.1 mrg a <<= 1; 44 1.1 mrg b >>= 1; 45 1.1 mrg } 46 1.1 mrg 47 1.1 mrg return result; 48 1.1 mrg } 49
Indexes created Sat Feb 28 05:31:39 UTC 2026