1/* muldi3.c extracted from gcc-2.7.2.3/libgcc2.c and 2 gcc-2.7.2.3/longlong.h which is: */ 3/* Copyright (C) 1989, 1992, 1993, 1994, 1995, 2001 Free Software Foundation, Inc. 4 5This file is part of GNU CC. 6 7GNU CC is free software; you can redistribute it and/or modify 8it under the terms of the GNU General Public License as published by 9the Free Software Foundation; either version 2, or (at your option) 10any later version. 11 12GNU CC is distributed in the hope that it will be useful, 13but WITHOUT ANY WARRANTY; without even the implied warranty of 14MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15GNU General Public License for more details. 16 17You should have received a copy of the GNU General Public License 18along with GNU CC; see the file COPYING. If not, write to 19the Free Software Foundation, 59 Temple Place - Suite 330, 20Boston, MA 02111-1307, USA. */ 21 22#define umul_ppmm(w1, w0, u, v) \ 23 __asm__ ("mulu %3, %0, %1" \ 24 : "=r" ((USItype)(w0)), \ 25 "=r" ((USItype)(w1)) \ 26 : "%0" ((USItype)(u)), \ 27 "r" ((USItype)(v))) 28 29#define __umulsidi3(u, v) \ 30 ({DIunion __w; \ 31 umul_ppmm (__w.s.high, __w.s.low, u, v); \ 32 __w.ll; }) 33 34typedef int SItype __attribute__ ((mode (SI))); 35typedef unsigned int USItype __attribute__ ((mode (SI))); 36typedef int DItype __attribute__ ((mode (DI))); 37typedef int word_type __attribute__ ((mode (__word__))); 38 39struct DIstruct {SItype high, low;}; 40 41typedef union 42{ 43 struct DIstruct s; 44 DItype ll; 45} DIunion; 46 47DItype 48__muldi3 (DItype u, DItype v) 49{ 50 DIunion w; 51 DIunion uu, vv; 52 53 uu.ll = u, 54 vv.ll = v; 55 56 w.ll = __umulsidi3 (uu.s.low, vv.s.low); 57 w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high 58 + (USItype) uu.s.high * (USItype) vv.s.low); 59 60 return w.ll; 61} 62