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.
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 #define BITS_PER_UNIT 8
24 #ifdef CONFIG_COLDFIRE
25 #define umul_ppmm(w1, w0, u, v) \
27 unsigned long long x; \
28 x = (unsigned long long)u * v; \
29 w0 = (unsigned long)(x & 0x00000000ffffffff); \
30 w1 = (unsigned long)(x & 0xffffffff00000000) >> 32; \
32 #else /* CONFIG_COLDFIRE */
33 #define umul_ppmm(w1, w0, u, v) \
34 __asm__ ("mulu%.l %3,%1:%0" \
35 : "=d" ((USItype)(w0)), \
36 "=d" ((USItype)(w1)) \
37 : "%0" ((USItype)(u)), \
39 #endif /* CONFIG_COLDFIRE */
41 #define __umulsidi3(u, v) \
43 umul_ppmm (__w.s.high, __w.s.low, u, v); \
46 typedef int SItype __attribute__ ((mode (SI)));
47 typedef unsigned int USItype __attribute__ ((mode (SI)));
48 typedef int DItype __attribute__ ((mode (DI)));
49 typedef int word_type __attribute__ ((mode (__word__)));
51 struct DIstruct {SItype high, low;};
60 __muldi3 (DItype u, DItype v)
68 w.ll = __umulsidi3 (uu.s.low, vv.s.low);
69 w.s.high += ((USItype) uu.s.low * (USItype) vv.s.high
70 + (USItype) uu.s.high * (USItype) vv.s.low);