libkern.h revision 1.110
1 /* $NetBSD: libkern.h,v 1.110 2013/12/11 01:24:08 joerg 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 41 #ifndef LIBKERN_INLINE 42 #define LIBKERN_INLINE static __inline 43 #define LIBKERN_BODY 44 #endif 45 46 LIBKERN_INLINE int imax(int, int) __unused; 47 LIBKERN_INLINE int imin(int, int) __unused; 48 LIBKERN_INLINE u_int max(u_int, u_int) __unused; 49 LIBKERN_INLINE u_int min(u_int, u_int) __unused; 50 LIBKERN_INLINE long lmax(long, long) __unused; 51 LIBKERN_INLINE long lmin(long, long) __unused; 52 LIBKERN_INLINE u_long ulmax(u_long, u_long) __unused; 53 LIBKERN_INLINE u_long ulmin(u_long, u_long) __unused; 54 LIBKERN_INLINE int abs(int) __unused; 55 56 LIBKERN_INLINE int isspace(int) __unused; 57 LIBKERN_INLINE int isascii(int) __unused; 58 LIBKERN_INLINE int isupper(int) __unused; 59 LIBKERN_INLINE int islower(int) __unused; 60 LIBKERN_INLINE int isalpha(int) __unused; 61 LIBKERN_INLINE int isdigit(int) __unused; 62 LIBKERN_INLINE int isxdigit(int) __unused; 63 LIBKERN_INLINE int toupper(int) __unused; 64 LIBKERN_INLINE int tolower(int) __unused; 65 66 #ifdef LIBKERN_BODY 67 LIBKERN_INLINE int 68 imax(int a, int b) 69 { 70 return (a > b ? a : b); 71 } 72 LIBKERN_INLINE int 73 imin(int a, int b) 74 { 75 return (a < b ? a : b); 76 } 77 LIBKERN_INLINE long 78 lmax(long a, long b) 79 { 80 return (a > b ? a : b); 81 } 82 LIBKERN_INLINE long 83 lmin(long a, long b) 84 { 85 return (a < b ? a : b); 86 } 87 LIBKERN_INLINE u_int 88 max(u_int a, u_int b) 89 { 90 return (a > b ? a : b); 91 } 92 LIBKERN_INLINE u_int 93 min(u_int a, u_int b) 94 { 95 return (a < b ? a : b); 96 } 97 LIBKERN_INLINE u_long 98 ulmax(u_long a, u_long b) 99 { 100 return (a > b ? a : b); 101 } 102 LIBKERN_INLINE u_long 103 ulmin(u_long a, u_long b) 104 { 105 return (a < b ? a : b); 106 } 107 108 LIBKERN_INLINE int 109 abs(int j) 110 { 111 return(j < 0 ? -j : j); 112 } 113 114 LIBKERN_INLINE int 115 isspace(int ch) 116 { 117 return (ch == ' ' || (ch >= '\t' && ch <= '\r')); 118 } 119 120 LIBKERN_INLINE int 121 isascii(int ch) 122 { 123 return ((ch & ~0x7f) == 0); 124 } 125 126 LIBKERN_INLINE int 127 isupper(int ch) 128 { 129 return (ch >= 'A' && ch <= 'Z'); 130 } 131 132 LIBKERN_INLINE int 133 islower(int ch) 134 { 135 return (ch >= 'a' && ch <= 'z'); 136 } 137 138 LIBKERN_INLINE int 139 isalpha(int ch) 140 { 141 return (isupper(ch) || islower(ch)); 142 } 143 144 LIBKERN_INLINE int 145 isdigit(int ch) 146 { 147 return (ch >= '0' && ch <= '9'); 148 } 149 150 LIBKERN_INLINE int 151 isxdigit(int ch) 152 { 153 return (isdigit(ch) || 154 (ch >= 'A' && ch <= 'F') || 155 (ch >= 'a' && ch <= 'f')); 156 } 157 158 LIBKERN_INLINE int 159 toupper(int ch) 160 { 161 if (islower(ch)) 162 return (ch - 0x20); 163 return (ch); 164 } 165 166 LIBKERN_INLINE int 167 tolower(int ch) 168 { 169 if (isupper(ch)) 170 return (ch + 0x20); 171 return (ch); 172 } 173 #endif 174 175 #define __NULL_STMT do { } while (/* CONSTCOND */ 0) 176 177 #define __KASSERTSTR "kernel %sassertion \"%s\" failed: file \"%s\", line %d " 178 179 #ifdef NDEBUG /* tradition! */ 180 #define assert(e) ((void)0) 181 #else 182 #define assert(e) (__predict_true((e)) ? (void)0 : \ 183 kern_assert(__KASSERTSTR, "", #e, __FILE__, __LINE__)) 184 #endif 185 186 #ifdef __COVERITY__ 187 #ifndef DIAGNOSTIC 188 #define DIAGNOSTIC 189 #endif 190 #endif 191 192 #define CTASSERT(x) __CTASSERT(x) 193 #define CTASSERT_SIGNED(x) __CTASSERT(((typeof(x))-1) < 0) 194 #define CTASSERT_UNSIGNED(x) __CTASSERT(((typeof(x))-1) >= 0) 195 196 #ifndef DIAGNOSTIC 197 #define _DIAGASSERT(a) (void)0 198 #ifdef lint 199 #define KASSERTMSG(e, msg, ...) /* NOTHING */ 200 #define KASSERT(e) /* NOTHING */ 201 #else /* !lint */ 202 #define KASSERTMSG(e, msg, ...) ((void)0) 203 #define KASSERT(e) ((void)0) 204 #endif /* !lint */ 205 #else /* DIAGNOSTIC */ 206 #define _DIAGASSERT(a) assert(a) 207 #define KASSERTMSG(e, msg, ...) \ 208 (__predict_true((e)) ? (void)0 : \ 209 kern_assert(__KASSERTSTR msg, "diagnostic ", #e, \ 210 __FILE__, __LINE__, ## __VA_ARGS__)) 211 212 #define KASSERT(e) (__predict_true((e)) ? (void)0 : \ 213 kern_assert(__KASSERTSTR, "diagnostic ", #e, \ 214 __FILE__, __LINE__)) 215 #endif 216 217 #ifndef DEBUG 218 #ifdef lint 219 #define KDASSERTMSG(e,msg, ...) /* NOTHING */ 220 #define KDASSERT(e) /* NOTHING */ 221 #else /* lint */ 222 #define KDASSERTMSG(e,msg, ...) ((void)0) 223 #define KDASSERT(e) ((void)0) 224 #endif /* lint */ 225 #else 226 #define KDASSERTMSG(e, msg, ...) \ 227 (__predict_true((e)) ? (void)0 : \ 228 kern_assert(__KASSERTSTR msg, "debugging ", #e, \ 229 __FILE__, __LINE__, ## __VA_ARGS__)) 230 231 #define KDASSERT(e) (__predict_true((e)) ? (void)0 : \ 232 kern_assert(__KASSERTSTR, "debugging ", #e, \ 233 __FILE__, __LINE__)) 234 #endif 235 236 /* 237 * XXX: For compatibility we use SMALL_RANDOM by default. 238 */ 239 #define SMALL_RANDOM 240 241 #ifndef offsetof 242 #if __GNUC_PREREQ__(4, 0) 243 #define offsetof(type, member) __builtin_offsetof(type, member) 244 #else 245 #define offsetof(type, member) \ 246 ((size_t)(unsigned long)(&(((type *)0)->member))) 247 #endif 248 #endif 249 250 #define MTPRNG_RLEN 624 251 struct mtprng_state { 252 unsigned int mt_idx; 253 uint32_t mt_elem[MTPRNG_RLEN]; 254 uint32_t mt_count; 255 uint32_t mt_sparse[3]; 256 }; 257 258 /* Prototypes for which GCC built-ins exist. */ 259 void *memcpy(void *, const void *, size_t); 260 int memcmp(const void *, const void *, size_t); 261 void *memset(void *, int, size_t); 262 #if __GNUC_PREREQ__(2, 95) && !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(_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 *, ...) 304 __attribute__((__format__(__printf__, 1, 2))); 305 unsigned int 306 bcdtobin(unsigned int); 307 unsigned int 308 bintobcd(unsigned int); 309 u_int32_t 310 inet_addr(const char *); 311 struct in_addr; 312 int inet_aton(const char *, struct in_addr *); 313 char *intoa(u_int32_t); 314 #define inet_ntoa(a) intoa((a).s_addr) 315 void *memchr(const void *, int, size_t); 316 void *memmove(void *, const void *, size_t); 317 int pmatch(const char *, const char *, const char **); 318 #ifndef SMALL_RANDOM 319 void srandom(unsigned long); 320 char *initstate(unsigned long, char *, size_t); 321 char *setstate(char *); 322 #endif /* SMALL_RANDOM */ 323 long random(void); 324 void mi_vector_hash(const void * __restrict, size_t, uint32_t, 325 uint32_t[3]); 326 void mtprng_init32(struct mtprng_state *, uint32_t); 327 void mtprng_initarray(struct mtprng_state *, const uint32_t *, size_t); 328 uint32_t mtprng_rawrandom(struct mtprng_state *); 329 uint32_t mtprng_random(struct mtprng_state *); 330 int scanc(u_int, const u_char *, const u_char *, int); 331 int skpc(int, size_t, u_char *); 332 int strcasecmp(const char *, const char *); 333 size_t strlcpy(char *, const char *, size_t); 334 size_t strlcat(char *, const char *, size_t); 335 int strncasecmp(const char *, const char *, size_t); 336 u_long strtoul(const char *, char **, int); 337 long long strtoll(const char *, char **, int); 338 unsigned long long strtoull(const char *, char **, int); 339 intmax_t strtoimax(const char *, char **, int); 340 uintmax_t strtoumax(const char *, char **, int); 341 int snprintb(char *, size_t, const char *, uint64_t); 342 int snprintb_m(char *, size_t, const char *, uint64_t, size_t); 343 int kheapsort(void *, size_t, size_t, int (*)(const void *, const void *), 344 void *); 345 uint32_t crc32(uint32_t, const uint8_t *, size_t); 346 unsigned int popcount(unsigned int) __constfunc; 347 unsigned int popcountl(unsigned long) __constfunc; 348 unsigned int popcountll(unsigned long long) __constfunc; 349 unsigned int popcount32(uint32_t) __constfunc; 350 unsigned int popcount64(uint64_t) __constfunc; 351 352 void *explicit_memset(void *, int, size_t); 353 int consttime_memequal(const void *, const void *, size_t); 354 #endif /* !_LIB_LIBKERN_LIBKERN_H_ */ 355
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