| 1 | /* |
| 2 | * (C) Copyright 2008 Openmoko, Inc. |
| 3 | * Author: Andy Green <andy@openmoko.org> |
| 4 | * |
| 5 | * Little utils for print and strings |
| 6 | * |
| 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License as |
| 9 | * published by the Free Software Foundation; either version 2 of |
| 10 | * the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This program 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. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
| 20 | * MA 02111-1307 USA |
| 21 | */ |
| 22 | |
| 23 | #include <qi.h> |
| 24 | #include <string.h> |
| 25 | |
| 26 | void (*putc_func)(char) = NULL; |
| 27 | |
| 28 | |
| 29 | void set_putc_func(void (*p)(char)) |
| 30 | { |
| 31 | putc_func = p; |
| 32 | } |
| 33 | |
| 34 | size_t strlen(const char *s) |
| 35 | { |
| 36 | size_t n = 0; |
| 37 | |
| 38 | while (*s++) |
| 39 | n++; |
| 40 | |
| 41 | return n; |
| 42 | } |
| 43 | |
| 44 | char *strcpy(char *dest, const char *src) |
| 45 | { |
| 46 | char * dest_orig = dest; |
| 47 | |
| 48 | while (*src) |
| 49 | *dest++ = *src++; |
| 50 | *dest = '\0'; |
| 51 | |
| 52 | return dest_orig; |
| 53 | } |
| 54 | |
| 55 | int puts(const char *string) |
| 56 | { |
| 57 | while (*string) |
| 58 | (putc_func)(*string++); |
| 59 | |
| 60 | return 1; |
| 61 | } |
| 62 | |
| 63 | /* done like this to avoid needing statics in steppingstone */ |
| 64 | void printnybble(unsigned char n) |
| 65 | { |
| 66 | if (n < 10) |
| 67 | (putc_func)('0' + n); |
| 68 | else |
| 69 | (putc_func)('a' + n - 10); |
| 70 | } |
| 71 | |
| 72 | void print8(unsigned char n) |
| 73 | { |
| 74 | printnybble((n >> 4) & 15); |
| 75 | printnybble(n & 15); |
| 76 | } |
| 77 | |
| 78 | void print32(unsigned int u) |
| 79 | { |
| 80 | print8(u >> 24); |
| 81 | print8(u >> 16); |
| 82 | print8(u >> 8); |
| 83 | print8(u); |
| 84 | } |
| 85 | |
| 86 | void printdec(int n) |
| 87 | { |
| 88 | int d[] = { |
| 89 | 1 * 1000 * 1000 * 1000, |
| 90 | 100 * 1000 * 1000, |
| 91 | 10 * 1000 * 1000, |
| 92 | 1 * 1000 * 1000, |
| 93 | 100 * 1000, |
| 94 | 10 * 1000, |
| 95 | 1 * 1000, |
| 96 | 100, |
| 97 | 10, |
| 98 | 1, |
| 99 | 0 |
| 100 | }; |
| 101 | int flag = 0; |
| 102 | int div = 0; |
| 103 | |
| 104 | if (n < 0) { |
| 105 | (putc_func)('-'); |
| 106 | n = -n; |
| 107 | } |
| 108 | |
| 109 | while (d[div]) { |
| 110 | int r = 0; |
| 111 | while (n >= d[div]) { |
| 112 | r++; |
| 113 | n -= d[div]; |
| 114 | } |
| 115 | if (r || flag || (d[div] == 1)) { |
| 116 | (putc_func)('0' + r); |
| 117 | flag = 1; |
| 118 | } |
| 119 | div++; |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | void *memcpy(void *dest, const void *src, size_t n) |
| 124 | { |
| 125 | u8 const * ps = src; |
| 126 | u8 * pd = dest; |
| 127 | |
| 128 | while (n--) |
| 129 | *pd++ = *ps++; |
| 130 | |
| 131 | return dest; |
| 132 | } |
| 133 | |
| 134 | void *memset(void *s, int c, size_t n) |
| 135 | { |
| 136 | u8 * p = s; |
| 137 | |
| 138 | while (n--) |
| 139 | *p++ = c; |
| 140 | |
| 141 | return s; |
| 142 | } |
| 143 | |
| 144 | int q; |
| 145 | |
| 146 | void udelay(int n) |
| 147 | { |
| 148 | while (n--) |
| 149 | q+=n * q; |
| 150 | } |
| 151 | |
