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001 /* Copyright (C) 2004 David Decotigny (with I 001 /* Copyright (C) 2004 David Decotigny (with INSA Rennes for vsnprintf) 002 Copyright (C) 2003 The KOS Team 002 Copyright (C) 2003 The KOS Team 003 Copyright (C) 1999 Free Software Foundatio 003 Copyright (C) 1999 Free Software Foundation 004 004 005 This program is free software; you can redi 005 This program is free software; you can redistribute it and/or 006 modify it under the terms of the GNU Genera 006 modify it under the terms of the GNU General Public License 007 as published by the Free Software Foundatio 007 as published by the Free Software Foundation; either version 2 008 of the License, or (at your option) any lat 008 of the License, or (at your option) any later version. 009 009 010 This program is distributed in the hope tha 010 This program is distributed in the hope that it will be useful, 011 but WITHOUT ANY WARRANTY; without even the 011 but WITHOUT ANY WARRANTY; without even the implied warranty of 012 MERCHANTABILITY or FITNESS FOR A PARTICULAR 012 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 013 GNU General Public License for more details 013 GNU General Public License for more details. 014 014 015 You should have received a copy of the GNU 015 You should have received a copy of the GNU General Public License 016 along with this program; if not, write to t 016 along with this program; if not, write to the Free Software 017 Foundation, Inc., 59 Temple Place - Suite 3 017 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 018 USA. 018 USA. 019 */ 019 */ 020 #include "klibc.h" 020 #include "klibc.h" 021 021 022 /* For an optimized version, see BSD sources ; 022 /* For an optimized version, see BSD sources ;) */ 023 void *memcpy(void *dst0, const void *src0, reg 023 void *memcpy(void *dst0, const void *src0, register unsigned int size) 024 { 024 { 025 char *dst; 025 char *dst; 026 const char *src; 026 const char *src; 027 for (dst = (char*)dst0, src = (const char*)s 027 for (dst = (char*)dst0, src = (const char*)src0 ; 028 size > 0 ; 028 size > 0 ; 029 dst++, src++, size--) 029 dst++, src++, size--) 030 *dst = *src; 030 *dst = *src; 031 return dst0; 031 return dst0; 032 } 032 } 033 033 034 /* ditto */ 034 /* ditto */ 035 void *memset(void *dst0, register int c, regis 035 void *memset(void *dst0, register int c, register unsigned int length) 036 { 036 { 037 char *dst; 037 char *dst; 038 for (dst = (char*) dst0 ; 038 for (dst = (char*) dst0 ; 039 length > 0 ; 039 length > 0 ; 040 dst++, length --) 040 dst++, length --) 041 *dst = (char)c; 041 *dst = (char)c; 042 return dst0; 042 return dst0; 043 } 043 } 044 044 045 int memcmp(const void *s1, const void *s2, sos 045 int memcmp(const void *s1, const void *s2, sos_size_t len) 046 { 046 { 047 const unsigned char *c1, *c2; 047 const unsigned char *c1, *c2; 048 unsigned int i; 048 unsigned int i; 049 049 050 for (i = 0, c1 = s1, c2 = s2; i < len; i++, 050 for (i = 0, c1 = s1, c2 = s2; i < len; i++, c1++, c2++) 051 { 051 { 052 if(*c1 != *c2) 052 if(*c1 != *c2) 053 return *c1 - *c2; 053 return *c1 - *c2; 054 } 054 } 055 055 056 return 0; 056 return 0; 057 } 057 } 058 058 059 059 060 unsigned int strlen(register const char *str) 060 unsigned int strlen(register const char *str) 061 { 061 { 062 unsigned int retval = 0; 062 unsigned int retval = 0; 063 063 064 while (*str++) 064 while (*str++) 065 retval++; 065 retval++; 066 066 067 return retval; 067 return retval; 068 } 068 } 069 069 070 070 071 unsigned int strnlen(const char * s, sos_size_ 071 unsigned int strnlen(const char * s, sos_size_t count) 072 { 072 { 073 const char *sc; 073 const char *sc; 074 074 075 for (sc = s; count-- && *sc != '\0'; ++sc) 075 for (sc = s; count-- && *sc != '\0'; ++sc) 076 /* nothing */continue; 076 /* nothing */continue; 077 077 078 return sc - s; 078 return sc - s; 079 } 079 } 080 080 081 081 082 char *strzcpy(register char *dst, register con 082 char *strzcpy(register char *dst, register const char *src, register int len) 083 { 083 { 084 int i; 084 int i; 085 085 086 if (len <= 0) 086 if (len <= 0) 087 return dst; 087 return dst; 088 088 089 for (i = 0; i < len; i++) 089 for (i = 0; i < len; i++) 090 { 090 { 091 dst[i] = src[i]; 091 dst[i] = src[i]; 092 if(src[i] == '\0') 092 if(src[i] == '\0') 093 return dst; 093 return dst; 094 } 094 } 095 095 096 dst[len-1] = '\0'; 096 dst[len-1] = '\0'; 097 return dst; 097 return dst; 098 } 098 } 099 099 100 100 101 char *strzcat (char *dest, const char *src, so 101 char *strzcat (char *dest, const char *src, sos_size_t n) 102 { 102 { 103 char *res = dest; 103 char *res = dest; 104 104 105 for ( ; *dest ; dest++); 105 for ( ; *dest ; dest++); 106 106 107 for ( ; *src ; src++, dest++) { 107 for ( ; *src ; src++, dest++) { 108 *dest = *src; 108 *dest = *src; 109 n--; 109 n--; 110 if (n <= 0) 110 if (n <= 0) 111 break; 111 break; 112 } 112 } 113 113 114 *dest = '\0'; 114 *dest = '\0'; 115 return res; 115 return res; 116 } 116 } 117 117 118 int strcmp(register const char *s1, register c 118 int strcmp(register const char *s1, register const char *s2) 119 { 119 { 120 while (*s1 == *s2++) 120 while (*s1 == *s2++) 121 if (*s1++ == 0) 121 if (*s1++ == 0) 122 return (0); 122 return (0); 123 123 124 return (*(const unsigned char *)s1 - *(const 124 return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1)); 125 } 125 } 126 126 127 127 128 int strncmp(register const char *s1, register 128 int strncmp(register const char *s1, register const char *s2, register int len) 129 { 129 { 130 char c1 = '\0', c2 = '\0'; 130 char c1 = '\0', c2 = '\0'; 131 131 132 while (len > 0) 132 while (len > 0) 133 { 133 { 134 c1 = (unsigned char) *s1++; 134 c1 = (unsigned char) *s1++; 135 c2 = (unsigned char) *s2++; 135 c2 = (unsigned char) *s2++; 136 if (c1 == '\0' || c1 != c2) 136 if (c1 == '\0' || c1 != c2) 137 return c1 - c2; 137 return c1 - c2; 138 len--; 138 len--; 139 } 139 } 140 140 141 return c1 - c2; 141 return c1 - c2; 142 } 142 } 143 143 144 144 145 static unsigned long int _random_seed = 931867 145 static unsigned long int _random_seed = 93186752; 146 146 147 /** 147 /** 148 * The following code is borrowed from Glenn R 148 * The following code is borrowed from Glenn Rhoads. 149 * http://remus.rutgers.edu/~rhoads/Code/code. 149 * http://remus.rutgers.edu/~rhoads/Code/code.html 150 * License to be defined... 150 * License to be defined... 151 */ 151 */ 152 unsigned long int random (void) 152 unsigned long int random (void) 153 { 153 { 154 /* The following parameters are recommended se 154 /* The following parameters are recommended settings based on research 155 uncomment the one you want. */ 155 uncomment the one you want. */ 156 156 157 /* For RAND_MAX == 4294967291 */ 157 /* For RAND_MAX == 4294967291 */ 158 static unsigned int a = 1588635695, q = 2, 158 static unsigned int a = 1588635695, q = 2, r = 1117695901; 159 /* static unsigned int a = 1223106847, m = 429 159 /* static unsigned int a = 1223106847, m = 4294967291U, q = 3, r = 625646750;*/ 160 /* static unsigned int a = 279470273, m = 4294 160 /* static unsigned int a = 279470273, m = 4294967291U, q = 15, r = 102913196;*/ 161 161 162 /* For RAND_MAX == 2147483647 */ 162 /* For RAND_MAX == 2147483647 */ 163 /* static unsigned int a = 1583458089, m = 214 163 /* static unsigned int a = 1583458089, m = 2147483647, q = 1, r = 564025558; */ 164 /* static unsigned int a = 784588716, m = 2147 164 /* static unsigned int a = 784588716, m = 2147483647, q = 2, r = 578306215; */ 165 /* static unsigned int a = 16807, m = 21474836 165 /* static unsigned int a = 16807, m = 2147483647, q = 127773, r = 2836; */ 166 /* static unsigned int a = 950706376, m = 2147 166 /* static unsigned int a = 950706376, m = 2147483647, q = 2, r = 246070895; */ 167 167 168 _random_seed = a*(_random_seed % q) - r*(_r 168 _random_seed = a*(_random_seed % q) - r*(_random_seed / q); 169 return _random_seed; 169 return _random_seed; 170 } 170 } 171 171 172 172 173 void srandom (unsigned long int seed) 173 void srandom (unsigned long int seed) 174 { 174 { 175 _random_seed = seed; 175 _random_seed = seed; 176 } 176 } 177 177 178 178 179 /* I (d2) borrowed and rewrote this for Nachos 179 /* I (d2) borrowed and rewrote this for Nachos/INSA Rennes. Thanks to 180 them for having kindly allowed me to do so. 180 them for having kindly allowed me to do so. */ 181 int vsnprintf(char *buff, sos_size_t len, cons 181 int vsnprintf(char *buff, sos_size_t len, const char * format, va_list ap) 182 { 182 { 183 sos_size_t i, result; 183 sos_size_t i, result; 184 184 185 if (!buff || !format || (len < 0)) 185 if (!buff || !format || (len < 0)) 186 return -1; 186 return -1; 187 187 188 #define PUTCHAR(thechar) \ 188 #define PUTCHAR(thechar) \ 189 do { \ 189 do { \ 190 if (result < len-1) \ 190 if (result < len-1) \ 191 *buff++ = (thechar); \ 191 *buff++ = (thechar); \ 192 result++; \ 192 result++; \ 193 } while (0) 193 } while (0) 194 194 195 result = 0; 195 result = 0; 196 for(i=0 ; format[i] != '\0' ; i++){ 196 for(i=0 ; format[i] != '\0' ; i++){ 197 switch (format[i]) 197 switch (format[i]) 198 { 198 { 199 case '%': 199 case '%': 200 i++; 200 i++; 201 switch(format[i]) 201 switch(format[i]) 202 { 202 { 203 case '%': 203 case '%': 204 { 204 { 205 PUTCHAR('%'); 205 PUTCHAR('%'); 206 break; 206 break; 207 } 207 } 208 case 'i':; 208 case 'i':; 209 case 'd': 209 case 'd': 210 { 210 { 211 int integer = va_arg(ap,int); 211 int integer = va_arg(ap,int); 212 int cpt2 = 0; 212 int cpt2 = 0; 213 char buff_int[16]; 213 char buff_int[16]; 214 214 215 if (integer<0) 215 if (integer<0) 216 PUTCHAR('-'); 216 PUTCHAR('-'); 217 /* Ne fait pas integer = -intege 217 /* Ne fait pas integer = -integer ici parce que INT_MIN 218 n'a pas d'equivalent positif 218 n'a pas d'equivalent positif (int = [-2^31, 2^31-1]) */ 219 219 220 do { 220 do { 221 int m10 = integer%10; 221 int m10 = integer%10; 222 m10 = (m10 < 0)? -m10:m10; 222 m10 = (m10 < 0)? -m10:m10; 223 buff_int[cpt2++]=(char)('0'+ m 223 buff_int[cpt2++]=(char)('0'+ m10); 224 integer=integer/10; 224 integer=integer/10; 225 } while(integer!=0); 225 } while(integer!=0); 226 226 227 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 227 for(cpt2 = cpt2 - 1 ; cpt2 >= 0 ; cpt2--) 228 PUTCHAR(buff_int[cpt2]); 228 PUTCHAR(buff_int[cpt2]); 229 229 230 break; 230 break; 231 } 231 } 232 232 233 case 'c': 233 case 'c': 234 { 234 { 235 int value = va_arg(ap,int); 235 int value = va_arg(ap,int); 236 PUTCHAR((char)value); 236 PUTCHAR((char)value); 237 break; 237 break; 238 } 238 } 239 239 240 case 's': 240 case 's': 241 { 241 { 242 char *string = va_arg(ap,char *) 242 char *string = va_arg(ap,char *); 243 if (! string) 243 if (! string) 244 string = "(null)"; 244 string = "(null)"; 245 for( ; *string != '\0' ; string+ 245 for( ; *string != '\0' ; string++) 246 PUTCHAR(*string); 246 PUTCHAR(*string); 247 break; 247 break; 248 } 248 } 249 249 250 case 'p': 250 case 'p': 251 PUTCHAR('0'); 251 PUTCHAR('0'); 252 PUTCHAR('x'); 252 PUTCHAR('x'); 253 case 'x': 253 case 'x': 254 { 254 { 255 unsigned int hexa = va_arg(ap,in 255 unsigned int hexa = va_arg(ap,int); 256 unsigned int nb; 256 unsigned int nb; 257 int i, had_nonzero = 0; 257 int i, had_nonzero = 0; 258 for(i=0 ; i < 8 ; i++) 258 for(i=0 ; i < 8 ; i++) 259 { 259 { 260 nb = (unsigned int)(hexa << 260 nb = (unsigned int)(hexa << (i*4)); 261 nb = (nb >> 28) & 0xf; 261 nb = (nb >> 28) & 0xf; 262 // Skip the leading zeros 262 // Skip the leading zeros 263 if (nb == 0) 263 if (nb == 0) 264 { 264 { 265 if (had_nonzero) 265 if (had_nonzero) 266 PUTCHAR('0'); 266 PUTCHAR('0'); 267 } 267 } 268 else 268 else 269 { 269 { 270 had_nonzero = 1; 270 had_nonzero = 1; 271 if (nb < 10) 271 if (nb < 10) 272 PUTCHAR('0'+nb); 272 PUTCHAR('0'+nb); 273 else 273 else 274 PUTCHAR('a'+(nb-10)); 274 PUTCHAR('a'+(nb-10)); 275 } 275 } 276 } 276 } 277 if (! had_nonzero) 277 if (! had_nonzero) 278 PUTCHAR('0'); 278 PUTCHAR('0'); 279 break; 279 break; 280 } 280 } 281 break; 281 break; 282 282 283 default: 283 default: 284 PUTCHAR('%'); 284 PUTCHAR('%'); 285 PUTCHAR(format[i]); 285 PUTCHAR(format[i]); 286 } 286 } 287 break; 287 break; 288 288 289 default: 289 default: 290 PUTCHAR(format[i]); 290 PUTCHAR(format[i]); 291 } 291 } 292 } 292 } 293 293 294 *buff = '\0'; 294 *buff = '\0'; 295 return result; 295 return result; 296 } 296 } 297 297 298 298 299 int snprintf(char * buff, sos_size_t len, cons 299 int snprintf(char * buff, sos_size_t len, const char *format, ...) 300 { 300 { 301 va_list ap; 301 va_list ap; 302 302 303 va_start(ap, format); 303 va_start(ap, format); 304 len = vsnprintf(buff, len, format, ap); 304 len = vsnprintf(buff, len, format, ap); 305 va_end(ap); 305 va_end(ap); 306 306 307 return len; 307 return len; 308 } 308 }
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