libkern.h revision 1.101
1 /* $NetBSD: libkern.h,v 1.101 2011/09/27 01:02:39 jym Exp $ */ 2 3 /*- 4 * Copyright (c) 1992, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)libkern.h 8.2 (Berkeley) 8/5/94 32 */ 33 34 #ifndef _LIB_LIBKERN_LIBKERN_H_ 35 #define _LIB_LIBKERN_LIBKERN_H_ 36 37 #include <sys/types.h> 38 #include <sys/inttypes.h> 39 #include <sys/null.h> 40 #include <sys/systm.h> 41 42 #ifndef LIBKERN_INLINE 43 #define LIBKERN_INLINE static __inline 44 #define LIBKERN_BODY 45 #endif 46 47 LIBKERN_INLINE int imax(int, int) __unused; 48 LIBKERN_INLINE int imin(int, int) __unused; 49 LIBKERN_INLINE u_int max(u_int, u_int) __unused; 50 LIBKERN_INLINE u_int min(u_int, u_int) __unused; 51 LIBKERN_INLINE long lmax(long, long) __unused; 52 LIBKERN_INLINE long lmin(long, long) __unused; 53 LIBKERN_INLINE u_long ulmax(u_long, u_long) __unused; 54 LIBKERN_INLINE u_long ulmin(u_long, u_long) __unused; 55 LIBKERN_INLINE int abs(int) __unused; 56 57 LIBKERN_INLINE int isspace(int) __unused; 58 LIBKERN_INLINE int isascii(int) __unused; 59 LIBKERN_INLINE int isupper(int) __unused; 60 LIBKERN_INLINE int islower(int) __unused; 61 LIBKERN_INLINE int isalpha(int) __unused; 62 LIBKERN_INLINE int isdigit(int) __unused; 63 LIBKERN_INLINE int isxdigit(int) __unused; 64 LIBKERN_INLINE int toupper(int) __unused; 65 LIBKERN_INLINE int tolower(int) __unused; 66 67 #ifdef LIBKERN_BODY 68 LIBKERN_INLINE int 69 imax(int a, int b) 70 { 71 return (a > b ? a : b); 72 } 73 LIBKERN_INLINE int 74 imin(int a, int b) 75 { 76 return (a < b ? a : b); 77 } 78 LIBKERN_INLINE long 79 lmax(long a, long b) 80 { 81 return (a > b ? a : b); 82 } 83 LIBKERN_INLINE long 84 lmin(long a, long b) 85 { 86 return (a < b ? a : b); 87 } 88 LIBKERN_INLINE u_int 89 max(u_int a, u_int b) 90 { 91 return (a > b ? a : b); 92 } 93 LIBKERN_INLINE u_int 94 min(u_int a, u_int b) 95 { 96 return (a < b ? a : b); 97 } 98 LIBKERN_INLINE u_long 99 ulmax(u_long a, u_long b) 100 { 101 return (a > b ? a : b); 102 } 103 LIBKERN_INLINE u_long 104 ulmin(u_long a, u_long b) 105 { 106 return (a < b ? a : b); 107 } 108 109 LIBKERN_INLINE int 110 abs(int j) 111 { 112 return(j < 0 ? -j : j); 113 } 114 115 LIBKERN_INLINE int 116 isspace(int ch) 117 { 118 return (ch == ' ' || (ch >= '\t' && ch <= '\r')); 119 } 120 121 LIBKERN_INLINE int 122 isascii(int ch) 123 { 124 return ((ch & ~0x7f) == 0); 125 } 126 127 LIBKERN_INLINE int 128 isupper(int ch) 129 { 130 return (ch >= 'A' && ch <= 'Z'); 131 } 132 133 LIBKERN_INLINE int 134 islower(int ch) 135 { 136 return (ch >= 'a' && ch <= 'z'); 137 } 138 139 LIBKERN_INLINE int 140 isalpha(int ch) 141 { 142 return (isupper(ch) || islower(ch)); 143 } 144 145 LIBKERN_INLINE int 146 isdigit(int ch) 147 { 148 return (ch >= '0' && ch <= '9'); 149 } 150 151 LIBKERN_INLINE int 152 isxdigit(int ch) 153 { 154 return (isdigit(ch) || 155 (ch >= 'A' && ch <= 'F') || 156 (ch >= 'a' && ch <= 'f')); 157 } 158 159 LIBKERN_INLINE int 160 toupper(int ch) 161 { 162 if (islower(ch)) 163 return (ch - 0x20); 164 return (ch); 165 } 166 167 LIBKERN_INLINE int 168 tolower(int ch) 169 { 170 if (isupper(ch)) 171 return (ch + 0x20); 172 return (ch); 173 } 174 #endif 175 176 #define __NULL_STMT do { } while (/* CONSTCOND */ 0) 177 178 #define __KASSERTSTR "kernel %sassertion \"%s\" failed: file \"%s\", line %d " 179 180 #ifdef NDEBUG /* tradition! */ 181 #define assert(e) ((void)0) 182 #else 183 #define assert(e) (__predict_true((e)) ? (void)0 : \ 184 panic(__KASSERTSTR, "", #e, __FILE__, __LINE__)) 185 #endif 186 187 #ifdef __COVERITY__ 188 #ifndef DIAGNOSTIC 189 #define DIAGNOSTIC 190 #endif 191 #endif 192 193 #define CTASSERT(x) __CTASSERT(x) 194 195 #ifndef DIAGNOSTIC 196 #define _DIAGASSERT(a) (void)0 197 #ifdef lint 198 #define KASSERTMSG(e, msg, ...) /* NOTHING */ 199 #define KASSERT(e) /* NOTHING */ 200 #else /* !lint */ 201 #define KASSERTMSG(e, msg, ...) ((void)0) 202 #define KASSERT(e) ((void)0) 203 #endif /* !lint */ 204 #else /* DIAGNOSTIC */ 205 #define _DIAGASSERT(a) assert(a) 206 #define KASSERTMSG(e, msg, ...) \ 207 (__predict_true((e)) ? (void)0 : \ 208 panic(__KASSERTSTR msg, "diagnostic ", #e, \ 209 __FILE__, __LINE__, ## __VA_ARGS__)) 210 211 #define KASSERT(e) (__predict_true((e)) ? (void)0 : \ 212 panic(__KASSERTSTR, "diagnostic ", #e, \ 213 __FILE__, __LINE__)) 214 #endif 215 216 #ifndef DEBUG 217 #ifdef lint 218 #define KDASSERTMSG(e,msg, ...) /* NOTHING */ 219 #define KDASSERT(e) /* NOTHING */ 220 #else /* lint */ 221 #define KDASSERTMSG(e,msg, ...) ((void)0) 222 #define KDASSERT(e) ((void)0) 223 #endif /* lint */ 224 #else 225 #define KDASSERTMSG(e, msg, ...) \ 226 (__predict_true((e)) ? (void)0 : \ 227 panic(__KASSERTSTR msg, "debugging ", #e, \ 228 __FILE__, __LINE__, ## __VA_ARGS__)) 229 230 #define KDASSERT(e) (__predict_true((e)) ? (void)0 : \ 231 panic(__KASSERTSTR, "debugging ", #e, \ 232 __FILE__, __LINE__)) 233 #endif 234 235 /* 236 * XXX: For compatibility we use SMALL_RANDOM by default. 237 */ 238 #define SMALL_RANDOM 239 240 #ifndef offsetof 241 #if __GNUC_PREREQ__(4, 0) 242 #define offsetof(type, member) __builtin_offsetof(type, member) 243 #else 244 #define offsetof(type, member) \ 245 ((size_t)(unsigned long)(&(((type *)0)->member))) 246 #endif 247 #endif 248 249 #define MTPRNG_RLEN 624 250 struct mtprng_state { 251 unsigned int mt_idx; 252 uint32_t mt_elem[MTPRNG_RLEN]; 253 uint32_t mt_count; 254 uint32_t mt_sparse[3]; 255 }; 256 257 /* Prototypes for which GCC built-ins exist. */ 258 void *memcpy(void *, const void *, size_t); 259 int memcmp(const void *, const void *, size_t); 260 void *memset(void *, int, size_t); 261 #if __GNUC_PREREQ__(2, 95) && (__GNUC_PREREQ__(4, 0) || !defined(__vax__)) && \ 262 !defined(_STANDALONE) 263 #define memcpy(d, s, l) __builtin_memcpy(d, s, l) 264 #define memcmp(a, b, l) __builtin_memcmp(a, b, l) 265 #endif 266 #if __GNUC_PREREQ__(2, 95) && !defined(__vax__) && !defined(_STANDALONE) 267 #define memset(d, v, l) __builtin_memset(d, v, l) 268 #endif 269 270 char *strcpy(char *, const char *); 271 int strcmp(const char *, const char *); 272 size_t strlen(const char *); 273 size_t strnlen(const char *, size_t); 274 char *strsep(char **, const char *); 275 #if __GNUC_PREREQ__(2, 95) && !defined(_STANDALONE) 276 #define strcpy(d, s) __builtin_strcpy(d, s) 277 #define strcmp(a, b) __builtin_strcmp(a, b) 278 #define strlen(a) __builtin_strlen(a) 279 #endif 280 281 /* Functions for which we always use built-ins. */ 282 #ifdef __GNUC__ 283 #define alloca(s) __builtin_alloca(s) 284 #endif 285 286 /* These exist in GCC 3.x, but we don't bother. */ 287 char *strcat(char *, const char *); 288 char *strncpy(char *, const char *, size_t); 289 int strncmp(const char *, const char *, size_t); 290 char *strchr(const char *, int); 291 char *strrchr(const char *, int); 292 293 char *strstr(const char *, const char *); 294 295 /* 296 * ffs is an instruction on vax. 297 */ 298 int ffs(int); 299 #if __GNUC_PREREQ__(2, 95) && (!defined(__vax__) || __GNUC_PREREQ__(4,1)) 300 #define ffs(x) __builtin_ffs(x) 301 #endif 302 303 void kern_assert(const char *, const char *, int, const char *); 304 unsigned int 305 bcdtobin(unsigned int); 306 unsigned int 307 bintobcd(unsigned int); 308 u_int32_t 309 inet_addr(const char *); 310 struct in_addr; 311 int inet_aton(const char *, struct in_addr *); 312 char *intoa(u_int32_t); 313 #define inet_ntoa(a) intoa((a).s_addr) 314 void *memchr(const void *, int, size_t); 315 void *memmove(void *, const void *, size_t); 316 int pmatch(const char *, const char *, const char **); 317 u_int32_t arc4random(void); 318 void arc4randbytes(void *, size_t); 319 #ifndef SMALL_RANDOM 320 void srandom(unsigned long); 321 char *initstate(unsigned long, char *, size_t); 322 char *setstate(char *); 323 #endif /* SMALL_RANDOM */ 324 long random(void); 325 void mtprng_init32(struct mtprng_state *, uint32_t); 326 void mtprng_initarray(struct mtprng_state *, const uint32_t *, size_t); 327 uint32_t mtprng_rawrandom(struct mtprng_state *); 328 uint32_t mtprng_random(struct mtprng_state *); 329 int scanc(u_int, const u_char *, const u_char *, int); 330 int skpc(int, size_t, u_char *); 331 int strcasecmp(const char *, const char *); 332 size_t strlcpy(char *, const char *, size_t); 333 size_t strlcat(char *, const char *, size_t); 334 int strncasecmp(const char *, const char *, size_t); 335 u_long strtoul(const char *, char **, int); 336 long long strtoll(const char *, char **, int); 337 unsigned long long strtoull(const char *, char **, int); 338 uintmax_t strtoumax(const char *, char **, int); 339 int snprintb(char *, size_t, const char *, uint64_t); 340 int snprintb_m(char *, size_t, const char *, uint64_t, size_t); 341 int kheapsort(void *, size_t, size_t, int (*)(const void *, const void *), 342 void *); 343 uint32_t crc32(uint32_t, const uint8_t *, size_t); 344 unsigned int popcount(unsigned int) __constfunc; 345 unsigned int popcountl(unsigned long) __constfunc; 346 unsigned int popcountll(unsigned long long) __constfunc; 347 unsigned int popcount32(uint32_t) __constfunc; 348 unsigned int popcount64(uint64_t) __constfunc; 349 #endif /* !_LIB_LIBKERN_LIBKERN_H_ */ 350
Indexes created Mon Sep 22 13:09:51 GMT 2025