bsd/sys/cdefs.h

   1 /*
   2  * Copyright (c) 2000-2009 Apple Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* Copyright 1995 NeXT Computer, Inc. All rights reserved. */
  29 /*
  30  * Copyright (c) 1991, 1993
  31  *      The Regents of the University of California.  All rights reserved.
  32  *
  33  * This code is derived from software contributed to Berkeley by
  34  * Berkeley Software Design, Inc.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. All advertising materials mentioning features or use of this software
  45  *    must display the following acknowledgement:
  46  *      This product includes software developed by the University of
  47  *      California, Berkeley and its contributors.
  48  * 4. Neither the name of the University nor the names of its contributors
  49  *    may be used to endorse or promote products derived from this software
  50  *    without specific prior written permission.
  51  *
  52  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  53  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  54  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  55  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  56  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  57  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  58  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  59  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  60  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  61  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  62  * SUCH DAMAGE.
  63  *
  64  *      @(#)cdefs.h     8.8 (Berkeley) 1/9/95
  65  */
  66
  67 #ifndef _CDEFS_H_
  68 #define _CDEFS_H_
  69
  70 #if defined(__cplusplus)
  71 #define __BEGIN_DECLS   extern "C" {
  72 #define __END_DECLS     }
  73 #else
  74 #define __BEGIN_DECLS
  75 #define __END_DECLS
  76 #endif
  77
  78 /*
  79  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
  80  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
  81  * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
  82  * in between its arguments.  __CONCAT can also concatenate double-quoted
  83  * strings produced by the __STRING macro, but this only works with ANSI C.
  84  */
  85 #if defined(__STDC__) || defined(__cplusplus)
  86 #define __P(protos)     protos          /* full-blown ANSI C */
  87 #define __CONCAT(x,y)   x ## y
  88 #define __STRING(x)     #x
  89
  90 #define __const         const           /* define reserved names to standard */
  91 #define __signed        signed
  92 #define __volatile      volatile
  93 #if defined(__cplusplus)
  94 #define __inline        inline          /* convert to C++ keyword */
  95 #else
  96 #ifndef __GNUC__
  97 #define __inline                        /* delete GCC keyword */
  98 #endif /* !__GNUC__ */
  99 #endif /* !__cplusplus */
 100
 101 #else   /* !(__STDC__ || __cplusplus) */
 102 #define __P(protos)     ()              /* traditional C preprocessor */
 103 #define __CONCAT(x,y)   x/**/y
 104 #define __STRING(x)     "x"
 105
 106 #ifndef __GNUC__
 107 #define __const                         /* delete pseudo-ANSI C keywords */
 108 #define __inline
 109 #define __signed
 110 #define __volatile
 111 #endif  /* !__GNUC__ */
 112
 113 /*
 114  * In non-ANSI C environments, new programs will want ANSI-only C keywords
 115  * deleted from the program and old programs will want them left alone.
 116  * When using a compiler other than gcc, programs using the ANSI C keywords
 117  * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
 118  * When using "gcc -traditional", we assume that this is the intent; if
 119  * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
 120  */
 121 #ifndef NO_ANSI_KEYWORDS
 122 #define const           __const                 /* convert ANSI C keywords */
 123 #define inline          __inline
 124 #define signed          __signed
 125 #define volatile        __volatile
 126 #endif /* !NO_ANSI_KEYWORDS */
 127 #endif /* !(__STDC__ || __cplusplus) */
 128
 129 /*
 130  * GCC1 and some versions of GCC2 declare dead (non-returning) and
 131  * pure (no side effects) functions using "volatile" and "const";
 132  * unfortunately, these then cause warnings under "-ansi -pedantic".
 133  * GCC2 uses a new, peculiar __attribute__((attrs)) style.  All of
 134  * these work for GNU C++ (modulo a slight glitch in the C++ grammar
 135  * in the distribution version of 2.5.5).
 136  */
 137 #if defined(__MWERKS__) && (__MWERKS__ > 0x2400)
 138         /* newer Metrowerks compilers support __attribute__() */
 139 #elif __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 5
 140 #define __dead2         __attribute__((__noreturn__))
 141 #define __pure2         __attribute__((__const__))
 142 #if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7
 143 #define __unused        /* no attribute */
 144 #else
 145 #define __unused        __attribute__((__unused__))
 146 #endif
 147 #else
 148 #define __attribute__(x)        /* delete __attribute__ if non-gcc or gcc1 */
 149 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
 150 /* __dead and __pure are depreciated.  Use __dead2 and __pure2 instead */
 151 #define __dead          __volatile
 152 #define __pure          __const
 153 #endif
 154 #endif
 155
 156 /* Delete pseudo-keywords wherever they are not available or needed. */
 157 #ifndef __dead
 158 #define __dead
 159 #define __pure
 160 #endif
 161 #ifndef __dead2
 162 #define __dead2
 163 #define __pure2
 164 #define __unused
 165 #endif
 166
 167 #if defined(__GNUC__) && __GNUC__ >= 4
 168 #define __used __attribute__((__used__))
 169 #else
 170 #define __used
 171 #endif
 172
 173 /*
 174  * GCC 2.95 provides `__restrict' as an extension to C90 to support the
 175  * C99-specific `restrict' type qualifier.  We happen to use `__restrict' as
 176  * a way to define the `restrict' type qualifier without disturbing older
 177  * software that is unaware of C99 keywords.
 178  */
 179 #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
 180 #if __STDC_VERSION__ < 199901
 181 #define __restrict
 182 #else
 183 #define __restrict      restrict
 184 #endif
 185 #endif
 186
 187 /*
 188  * Compiler-dependent macros to declare that functions take printf-like
 189  * or scanf-like arguments.  They are null except for versions of gcc
 190  * that are known to support the features properly.  Functions declared
 191  * with these attributes will cause compilation warnings if there is a
 192  * mismatch between the format string and subsequent function parameter
 193  * types.
 194  */
 195 #if __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 7
 196 #define __printflike(fmtarg, firstvararg) \
 197                 __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
 198 #define __scanflike(fmtarg, firstvararg) \
 199                 __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
 200 #else
 201 #define __printflike(fmtarg, firstvararg)
 202 #define __scanflike(fmtarg, firstvararg)
 203 #endif
 204
 205 #define __IDSTRING(name,string) static const char name[] __used = string
 206
 207 #ifndef __COPYRIGHT
 208 #define __COPYRIGHT(s) __IDSTRING(copyright,s)
 209 #endif
 210
 211 #ifndef __RCSID
 212 #define __RCSID(s) __IDSTRING(rcsid,s)
 213 #endif
 214
 215 #ifndef __SCCSID
 216 #define __SCCSID(s) __IDSTRING(sccsid,s)
 217 #endif
 218
 219 #ifndef __PROJECT_VERSION
 220 #define __PROJECT_VERSION(s) __IDSTRING(project_version,s)
 221 #endif
 222
 223 /*
 224  * COMPILATION ENVIRONMENTS -- see compat(5) for additional detail
 225  *
 226  * DEFAULT      By default newly complied code will get POSIX APIs plus
 227  *              Apple API extensions in scope.
 228  *
 229  *              Most users will use this compilation environment to avoid
 230  *              behavioral differences between 32 and 64 bit code.
 231  *
 232  * LEGACY       Defining _NONSTD_SOURCE will get pre-POSIX APIs plus Apple
 233  *              API extensions in scope.
 234  *
 235  *              This is generally equivalent to the Tiger release compilation
 236  *              environment, except that it cannot be applied to 64 bit code;
 237  *              its use is discouraged.
 238  *
 239  *              We expect this environment to be deprecated in the future.
 240  *
 241  * STRICT       Defining _POSIX_C_SOURCE or _XOPEN_SOURCE restricts the
 242  *              available APIs to exactly the set of APIs defined by the
 243  *              corresponding standard, based on the value defined.
 244  *
 245  *              A correct, portable definition for _POSIX_C_SOURCE is 200112L.
 246  *              A correct, portable definition for _XOPEN_SOURCE is 600L.
 247  *
 248  *              Apple API extensions are not visible in this environment,
 249  *              which can cause Apple specific code to fail to compile,
 250  *              or behave incorrectly if prototypes are not in scope or
 251  *              warnings about missing prototypes are not enabled or ignored.
 252  *
 253  * In any compilation environment, for correct symbol resolution to occur,
 254  * function prototypes must be in scope.  It is recommended that all Apple
 255  * tools users add either the "-Wall" or "-Wimplicit-function-declaration"
 256  * compiler flags to their projects to be warned when a function is being
 257  * used without a prototype in scope.
 258  */
 259
 260 /* These settings are particular to each product. */
 261 #ifdef KERNEL
 262 #define __DARWIN_ONLY_64_BIT_INO_T      0
 263 #define __DARWIN_ONLY_UNIX_CONFORMANCE  0
 264 #define __DARWIN_ONLY_VERS_1050         0
 265 #define __DARWIN_SUF_DARWIN10   "_darwin10"
 266 #define __DARWIN10_ALIAS(sym)   __asm("_" __STRING(sym) __DARWIN_SUF_DARWIN10)
 267 #else /* !KERNEL */
 268 #ifdef PLATFORM_iPhoneOS
 269 /* Platform: iPhoneOS */
 270 #define __DARWIN_ONLY_64_BIT_INO_T      1
 271 #define __DARWIN_ONLY_UNIX_CONFORMANCE  1
 272 #define __DARWIN_ONLY_VERS_1050         1
 273 #endif /* PLATFORM_iPhoneOS */
 274 #ifdef PLATFORM_iPhoneSimulator
 275 /* Platform: iPhoneSimulator */
 276 #define __DARWIN_ONLY_64_BIT_INO_T      1
 277 #define __DARWIN_ONLY_UNIX_CONFORMANCE  1
 278 #define __DARWIN_ONLY_VERS_1050         1
 279 #endif /* PLATFORM_iPhoneSimulator */
 280 #ifdef PLATFORM_MacOSX
 281 /* Platform: MacOSX */
 282 #define __DARWIN_ONLY_64_BIT_INO_T      0
 283 /* #undef __DARWIN_ONLY_UNIX_CONFORMANCE (automatically set for 64-bit) */
 284 #define __DARWIN_ONLY_VERS_1050         0
 285 #endif /* PLATFORM_MacOSX */
 286 #endif /* KERNEL */
 287
 288 /*
 289  * The __DARWIN_ALIAS macros are used to do symbol renaming; they allow
 290  * legacy code to use the old symbol, thus maintaining binary compatibility
 291  * while new code can use a standards compliant version of the same function.
 292  *
 293  * __DARWIN_ALIAS is used by itself if the function signature has not
 294  * changed, it is used along with a #ifdef check for __DARWIN_UNIX03
 295  * if the signature has changed.  Because the __LP64__ environment
 296  * only supports UNIX03 semantics it causes __DARWIN_UNIX03 to be
 297  * defined, but causes __DARWIN_ALIAS to do no symbol mangling.
 298  *
 299  * As a special case, when XCode is used to target a specific version of the
 300  * OS, the manifest constant __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__
 301  * will be defined by the compiler, with the digits representing major version
 302  * time 100 + minor version times 10 (e.g. 10.5 := 1050).  If we are targeting
 303  * pre-10.5, and it is the default compilation environment, revert the
 304  * compilation environment to pre-__DARWIN_UNIX03.
 305  */
 306 #if !defined(__DARWIN_ONLY_UNIX_CONFORMANCE)
 307 #  if defined(__LP64__)
 308 #    define __DARWIN_ONLY_UNIX_CONFORMANCE 1
 309 #  else /* !__LP64__ */
 310 #    define __DARWIN_ONLY_UNIX_CONFORMANCE 0
 311 #  endif /* __LP64__ */
 312 #endif /* !__DARWIN_ONLY_UNIX_CONFORMANCE */
 313
 314 #if !defined(__DARWIN_UNIX03)
 315 #  if defined(KERNEL)
 316 #    define __DARWIN_UNIX03     0
 317 #  elif __DARWIN_ONLY_UNIX_CONFORMANCE
 318 #    if defined(_NONSTD_SOURCE)
 319 #      error "Can't define _NONSTD_SOURCE when only UNIX conformance is available."
 320 #    endif /* _NONSTD_SOURCE */
 321 #    define __DARWIN_UNIX03     1
 322 #  elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1040)
 323 #    define __DARWIN_UNIX03     0
 324 #  elif defined(_DARWIN_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE)
 325 #    if defined(_NONSTD_SOURCE)
 326 #      error "Can't define both _NONSTD_SOURCE and any of _DARWIN_C_SOURCE, _XOPEN_SOURCE or _POSIX_C_SOURCE."
 327 #    endif /* _NONSTD_SOURCE */
 328 #    define __DARWIN_UNIX03     1
 329 #  elif defined(_NONSTD_SOURCE)
 330 #    define __DARWIN_UNIX03     0
 331 #  else /* default */
 332 #    if defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050)
 333 #      define __DARWIN_UNIX03   0
 334 #    else /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
 335 #      define __DARWIN_UNIX03   1
 336 #    endif /* __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__ >= 1050 */
 337 #  endif /* _DARWIN_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
 338 #endif /* !__DARWIN_UNIX03 */
 339
 340 #if !defined(__DARWIN_64_BIT_INO_T)
 341 #  if defined(KERNEL)
 342 #    define __DARWIN_64_BIT_INO_T 0
 343 #  elif defined(_DARWIN_USE_64_BIT_INODE)
 344 #    if defined(_DARWIN_NO_64_BIT_INODE)
 345 #      error "Can't define both _DARWIN_USE_64_BIT_INODE and _DARWIN_NO_64_BIT_INODE."
 346 #    endif /* _DARWIN_NO_64_BIT_INODE */
 347 #    define __DARWIN_64_BIT_INO_T 1
 348 #  elif defined(_DARWIN_NO_64_BIT_INODE)
 349 #    if __DARWIN_ONLY_64_BIT_INO_T
 350 #      error "Can't define _DARWIN_NO_64_BIT_INODE when only 64-bit inodes are available."
 351 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 352 #    define __DARWIN_64_BIT_INO_T 0
 353 #  else /* default */
 354 #    if __DARWIN_ONLY_64_BIT_INO_T
 355 #      define __DARWIN_64_BIT_INO_T 1
 356 #    elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1060) || __DARWIN_UNIX03 == 0
 357 #      define __DARWIN_64_BIT_INO_T 0
 358 #    else /* default */
 359 #      define __DARWIN_64_BIT_INO_T 1
 360 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 361 #  endif
 362 #endif /* !__DARWIN_64_BIT_INO_T */
 363
 364 #if !defined(__DARWIN_VERS_1050)
 365 #  if defined(KERNEL)
 366 #    define __DARWIN_VERS_1050 0
 367 #  elif __DARWIN_ONLY_VERS_1050
 368 #    define __DARWIN_VERS_1050 1
 369 #  elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__) && ((__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0) < 1050) || __DARWIN_UNIX03 == 0
 370 #    define __DARWIN_VERS_1050 0
 371 #  else /* default */
 372 #    define __DARWIN_VERS_1050 1
 373 #  endif
 374 #endif /* !__DARWIN_VERS_1050 */
 375
 376 #if !defined(__DARWIN_NON_CANCELABLE)
 377 #  if defined(KERNEL)
 378 #    define __DARWIN_NON_CANCELABLE 0
 379 #  else /* default */
 380 #    define __DARWIN_NON_CANCELABLE 0
 381 #  endif
 382 #endif /* !__DARWIN_NON_CANCELABLE */
 383
 384 /*
 385  * symbol suffixes used for symbol versioning
 386  */
 387 #if __DARWIN_UNIX03
 388 #  if __DARWIN_ONLY_UNIX_CONFORMANCE
 389 #    define __DARWIN_SUF_UNIX03         /* nothing */
 390 #  else /* !__DARWIN_ONLY_UNIX_CONFORMANCE */
 391 #    define __DARWIN_SUF_UNIX03         "$UNIX2003"
 392 #  endif /* __DARWIN_ONLY_UNIX_CONFORMANCE */
 393
 394 #  if __DARWIN_64_BIT_INO_T
 395 #    if __DARWIN_ONLY_64_BIT_INO_T
 396 #      define __DARWIN_SUF_64_BIT_INO_T /* nothing */
 397 #    else /* !__DARWIN_ONLY_64_BIT_INO_T */
 398 #      define __DARWIN_SUF_64_BIT_INO_T "$INODE64"
 399 #    endif /* __DARWIN_ONLY_64_BIT_INO_T */
 400 #  else /* !__DARWIN_64_BIT_INO_T */
 401 #    define __DARWIN_SUF_64_BIT_INO_T   /* nothing */
 402 #  endif /* __DARWIN_64_BIT_INO_T */
 403
 404 #  if __DARWIN_VERS_1050
 405 #    if __DARWIN_ONLY_VERS_1050
 406 #      define __DARWIN_SUF_1050         /* nothing */
 407 #    else /* !__DARWIN_ONLY_VERS_1050 */
 408 #      define __DARWIN_SUF_1050         "$1050"
 409 #    endif /* __DARWIN_ONLY_VERS_1050 */
 410 #  else /* !__DARWIN_VERS_1050 */
 411 #    define __DARWIN_SUF_1050           /* nothing */
 412 #  endif /* __DARWIN_VERS_1050 */
 413
 414 #  if __DARWIN_NON_CANCELABLE
 415 #    define __DARWIN_SUF_NON_CANCELABLE "$NOCANCEL"
 416 #  else /* !__DARWIN_NON_CANCELABLE */
 417 #    define __DARWIN_SUF_NON_CANCELABLE /* nothing */
 418 #  endif /* __DARWIN_NON_CANCELABLE */
 419
 420 #else /* !__DARWIN_UNIX03 */
 421 #  define __DARWIN_SUF_UNIX03           /* nothing */
 422 #  define __DARWIN_SUF_64_BIT_INO_T     /* nothing */
 423 #  define __DARWIN_SUF_NON_CANCELABLE   /* nothing */
 424 #  define __DARWIN_SUF_1050             /* nothing */
 425 #endif /* __DARWIN_UNIX03 */
 426
 427 #define __DARWIN_SUF_EXTSN              "$DARWIN_EXTSN"
 428
 429 /*
 430  * symbol versioning macros
 431  */
 432 #define __DARWIN_ALIAS(sym)             __asm("_" __STRING(sym) __DARWIN_SUF_UNIX03)
 433 #define __DARWIN_ALIAS_C(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
 434 #define __DARWIN_ALIAS_I(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
 435 #define __DARWIN_INODE64(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_64_BIT_INO_T)
 436
 437 #define __DARWIN_1050(sym)              __asm("_" __STRING(sym) __DARWIN_SUF_1050)
 438 #define __DARWIN_1050ALIAS(sym)         __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_UNIX03)
 439 #define __DARWIN_1050ALIAS_C(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_NON_CANCELABLE __DARWIN_SUF_UNIX03)
 440 #define __DARWIN_1050ALIAS_I(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T __DARWIN_SUF_UNIX03)
 441 #define __DARWIN_1050INODE64(sym)       __asm("_" __STRING(sym) __DARWIN_SUF_1050 __DARWIN_SUF_64_BIT_INO_T)
 442
 443 #define __DARWIN_EXTSN(sym)             __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN)
 444 #define __DARWIN_EXTSN_C(sym)           __asm("_" __STRING(sym) __DARWIN_SUF_EXTSN __DARWIN_SUF_NON_CANCELABLE)
 445
 446 /*
 447  * symbol release macros
 448  */
 449 #ifdef KERNEL
 450 #define __DARWIN_ALIAS_STARTING(_mac, _iphone, x)
 451 #else
 452 #include <sys/_symbol_aliasing.h>
 453
 454 #if defined(__IPHONE_OS_VERSION_MIN_REQUIRED)
 455 #define __DARWIN_ALIAS_STARTING(_mac, _iphone, x)   __DARWIN_ALIAS_STARTING_IPHONE_##_iphone(x)
 456 #elif defined(__ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__)
 457 #define __DARWIN_ALIAS_STARTING(_mac, _iphone, x)   __DARWIN_ALIAS_STARTING_MAC_##_mac(x)
 458 #else
 459 #define __DARWIN_ALIAS_STARTING(_mac, _iphone, x)
 460 #endif
 461 #endif /* KERNEL */
 462
 463
 464 /*
 465  * POSIX.1 requires that the macros we test be defined before any standard
 466  * header file is included.  This permits us to convert values for feature
 467  * testing, as necessary, using only _POSIX_C_SOURCE.
 468  *
 469  * Here's a quick run-down of the versions:
 470  *  defined(_POSIX_SOURCE)              1003.1-1988
 471  *  _POSIX_C_SOURCE == 1L               1003.1-1990
 472  *  _POSIX_C_SOURCE == 2L               1003.2-1992 C Language Binding Option
 473  *  _POSIX_C_SOURCE == 199309L          1003.1b-1993
 474  *  _POSIX_C_SOURCE == 199506L          1003.1c-1995, 1003.1i-1995,
 475  *                                      and the omnibus ISO/IEC 9945-1: 1996
 476  *  _POSIX_C_SOURCE == 200112L          1003.1-2001
 477  *  _POSIX_C_SOURCE == 200809L          1003.1-2008
 478  *
 479  * In addition, the X/Open Portability Guide, which is now the Single UNIX
 480  * Specification, defines a feature-test macro which indicates the version of
 481  * that specification, and which subsumes _POSIX_C_SOURCE.
 482  */
 483
 484 /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */
 485 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L
 486 #undef _POSIX_C_SOURCE
 487 #define _POSIX_C_SOURCE         199009L
 488 #endif
 489
 490 /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */
 491 #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L
 492 #undef _POSIX_C_SOURCE
 493 #define _POSIX_C_SOURCE         199209L
 494 #endif
 495
 496 /* Deal with various X/Open Portability Guides and Single UNIX Spec. */
 497 #ifdef _XOPEN_SOURCE
 498 #if _XOPEN_SOURCE - 0L >= 700L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200809L)
 499 #undef _POSIX_C_SOURCE
 500 #define _POSIX_C_SOURCE         200809L
 501 #elif _XOPEN_SOURCE - 0L >= 600L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 200112L)
 502 #undef _POSIX_C_SOURCE
 503 #define _POSIX_C_SOURCE         200112L
 504 #elif _XOPEN_SOURCE - 0L >= 500L && (!defined(_POSIX_C_SOURCE) || _POSIX_C_SOURCE - 0L < 199506L)
 505 #undef _POSIX_C_SOURCE
 506 #define _POSIX_C_SOURCE         199506L
 507 #endif
 508 #endif
 509
 510 /*
 511  * Deal with all versions of POSIX.  The ordering relative to the tests above is
 512  * important.
 513  */
 514 #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
 515 #define _POSIX_C_SOURCE         198808L
 516 #endif
 517
 518 /*
 519  * Deprecation macro
 520  */
 521 #if defined(__GNUC__) && ((__GNUC__ >= 4) || ((__GNUC__ == 3) && (__GNUC_MINOR__ >= 1)))
 522 #define __deprecated __attribute__((deprecated))
 523 #define __unavailable __attribute__((unavailable))
 524 #else
 525 #define __deprecated /* nothing */
 526 #define __unavailable /* nothing */
 527 #endif
 528
 529 /* POSIX C deprecation macros */
 530 #ifdef KERNEL
 531 #define __POSIX_C_DEPRECATED(ver)
 532 #else
 533 #include <sys/_posix_availability.h>
 534
 535 #define __POSIX_C_DEPRECATED(ver) ___POSIX_C_DEPRECATED_STARTING_##ver
 536 #endif
 537
 538 /*
 539  * Set a single macro which will always be defined and can be used to determine
 540  * the appropriate namespace.  For POSIX, these values will correspond to
 541  * _POSIX_C_SOURCE value.  Currently there are two additional levels corresponding
 542  * to ANSI (_ANSI_SOURCE) and Darwin extensions (_DARWIN_C_SOURCE)
 543  */
 544 #define __DARWIN_C_ANSI         010000L
 545 #define __DARWIN_C_FULL         900000L
 546
 547 #if   defined(_ANSI_SOURCE)
 548 #define __DARWIN_C_LEVEL        __DARWIN_C_ANSI
 549 #elif defined(_POSIX_C_SOURCE) && !defined(_DARWIN_C_SOURCE) && !defined(_NONSTD_SOURCE)
 550 #define __DARWIN_C_LEVEL        _POSIX_C_SOURCE
 551 #else
 552 #define __DARWIN_C_LEVEL        __DARWIN_C_FULL
 553 #endif
 554
 555
 556 /*
 557  * long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and
 558  * c99 still want long longs.  While not perfect, we allow long longs for
 559  * g++.
 560  */
 561 #define __DARWIN_NO_LONG_LONG   (defined(__STRICT_ANSI__) \
 562                                 && (__STDC_VERSION__-0 < 199901L) \
 563                                 && !defined(__GNUG__))
 564
 565 /*
 566  * Long double compatibility macro allow selecting variant symbols based
 567  * on the old (compatible) 64-bit long doubles, or the new 128-bit
 568  * long doubles.  This applies only to ppc; i386 already has long double
 569  * support, while ppc64 doesn't have any backwards history.
 570  */
 571 #if   defined(__i386__) || defined(__x86_64__)
 572 #  define       __DARWIN_LDBL_COMPAT(x) /* nothing */
 573 #  define       __DARWIN_LDBL_COMPAT2(x) /* nothing */
 574 #  define       __DARWIN_LONG_DOUBLE_IS_DOUBLE  0
 575 #else
 576 #  error Unknown architecture
 577 #endif
 578
 579 /*****************************************
 580  *  Public darwin-specific feature macros
 581  *****************************************/
 582
 583 /*
 584  * _DARWIN_FEATURE_64_BIT_INODE indicates that the ino_t type is 64-bit, and
 585  * structures modified for 64-bit inodes (like struct stat) will be used.
 586  */
 587 #if __DARWIN_64_BIT_INO_T
 588 #define _DARWIN_FEATURE_64_BIT_INODE            1
 589 #endif
 590
 591 /*
 592  * _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE indicates when the long double type
 593  * is the same as the double type (ppc and arm only)
 594  */
 595 #if __DARWIN_LONG_DOUBLE_IS_DOUBLE
 596 #define _DARWIN_FEATURE_LONG_DOUBLE_IS_DOUBLE   1
 597 #endif
 598
 599 /*
 600  * _DARWIN_FEATURE_64_ONLY_BIT_INODE indicates that the ino_t type may only
 601  * be 64-bit; there is no support for 32-bit ino_t when this macro is defined
 602  * (and non-zero).  There is no struct stat64 either, as the regular
 603  * struct stat will already be the 64-bit version.
 604  */
 605 #if __DARWIN_ONLY_64_BIT_INO_T
 606 #define _DARWIN_FEATURE_ONLY_64_BIT_INODE       1
 607 #endif
 608
 609 /*
 610  * _DARWIN_FEATURE_ONLY_VERS_1050 indicates that only those APIs updated
 611  * in 10.5 exists; no pre-10.5 variants are available.
 612  */
 613 #if __DARWIN_ONLY_VERS_1050
 614 #define _DARWIN_FEATURE_ONLY_VERS_1050          1
 615 #endif
 616
 617 /*
 618  * _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE indicates only UNIX conforming API
 619  * are available (the legacy BSD APIs are not available)
 620  */
 621 #if __DARWIN_ONLY_UNIX_CONFORMANCE
 622 #define _DARWIN_FEATURE_ONLY_UNIX_CONFORMANCE   1
 623 #endif
 624
 625 /*
 626  * _DARWIN_FEATURE_UNIX_CONFORMANCE indicates whether UNIX conformance is on,
 627  * and specifies the conformance level (3 is SUSv3)
 628  */
 629 #if __DARWIN_UNIX03
 630 #define _DARWIN_FEATURE_UNIX_CONFORMANCE        3
 631 #endif
 632
 633 /*
 634  * This macro casts away the qualifier from the variable
 635  *
 636  * Note: use at your own risk, removing qualifiers can result in
 637  * catastrophic run-time failures.
 638  */
 639 #ifndef __CAST_AWAY_QUALIFIER
 640 #define __CAST_AWAY_QUALIFIER(variable, qualifier, type)  (type) (long)(variable)
 641 #endif
 642
 643 #endif /* !_CDEFS_H_ */