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 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 BITS_PER_UNIT 8
23
24#define umul_ppmm(w1, w0, u, v) \
25  __asm__ ("mulu%.l %3,%1:%0"						\
26           : "=d" ((USItype)(w0)),					\
27             "=d" ((USItype)(w1))					\
28           : "%0" ((USItype)(u)),					\
29             "dmi" ((USItype)(v)))
30
31#define __umulsidi3(u, v) \
32  ({DIunion __w;							\
33    umul_ppmm (__w.s.high, __w.s.low, u, v);				\
34    __w.ll; })
35
36typedef 	 int SItype	__attribute__ ((mode (SI)));
37typedef unsigned int USItype	__attribute__ ((mode (SI)));
38typedef		 int DItype	__attribute__ ((mode (DI)));
39typedef int word_type __attribute__ ((mode (__word__)));
40
41struct DIstruct {SItype high, low;};
42
43typedef union
44{
45  struct DIstruct s;
46  DItype ll;
47} DIunion;
48
49DItype
50__muldi3 (DItype u, DItype v)
51{
52  DIunion w;
53  DIunion uu, vv;
54
55  uu.ll = u,
56  vv.ll = v;
57
58  w.ll = __umulsidi3 (uu.s.low, vv.s.low);
59  w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high
60	       + (USItype) uu.s.high * (USItype) vv.s.low);
61
62  return w.ll;
63}
64