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5c952cf0 WD |
1 | /* |
2 | * This file is part of GNU CC. | |
3 | * | |
4 | * GNU CC is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published | |
6 | * by the Free Software Foundation; either version 2, or (at your | |
7 | * option) any later version. | |
8 | * | |
9 | * GNU CC is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public | |
15 | * License along with GNU CC; see the file COPYING. If not, write | |
16 | * to the Free Software Foundation, 59 Temple Place - Suite 330, | |
17 | * Boston, MA 02111-1307, USA. | |
18 | */ | |
19 | ||
20 | ||
21 | #include <common.h> | |
22 | ||
6d0f6bcf | 23 | #if !defined(CONFIG_SYS_NIOS_MULT_HW) && !defined(CONFIG_SYS_NIOS_MULT_MSTEP) |
5c952cf0 WD |
24 | |
25 | #include "math.h" | |
26 | ||
27 | USItype __mulsi3 (USItype a, USItype b) | |
28 | { | |
29 | USItype c = 0; | |
30 | ||
31 | while (a != 0) { | |
32 | if (a & 1) | |
33 | c += b; | |
34 | a >>= 1; | |
35 | b <<= 1; | |
36 | } | |
37 | ||
38 | return c; | |
39 | } | |
40 | ||
41 | ||
42 | UHItype __mulhi3 (UHItype a, UHItype b) | |
43 | { | |
44 | UHItype c = 0; | |
45 | ||
46 | while (a != 0) { | |
47 | if (a & 1) | |
48 | c += b; | |
49 | a >>= 1; | |
50 | b <<= 1; | |
51 | } | |
52 | ||
53 | return c; | |
54 | } | |
55 | ||
6d0f6bcf | 56 | #endif /*!defined(CONFIG_SYS_NIOS_MULT_HW) && !defined(CONFIG_SYS_NIOS_MULT_MSTEP) */ |