Harry Liebel | 0f702c6 | 2013-12-17 18:19:04 +0000 | [diff] [blame] | 1 | /*- |
| 2 | * Copyright (c) 1991, 1993 |
| 3 | * The Regents of the University of California. All rights reserved. |
| 4 | * |
| 5 | * This code is derived from software contributed to Berkeley by |
| 6 | * Berkeley Software Design, Inc. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 4. Neither the name of the University nor the names of its contributors |
| 17 | * may be used to endorse or promote products derived from this software |
| 18 | * without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 30 | * SUCH DAMAGE. |
| 31 | * |
| 32 | * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 |
| 33 | * $FreeBSD$ |
| 34 | */ |
| 35 | |
| 36 | #ifndef _SYS_CDEFS_H_ |
| 37 | #define _SYS_CDEFS_H_ |
| 38 | |
| 39 | #if defined(__cplusplus) |
| 40 | #define __BEGIN_DECLS extern "C" { |
| 41 | #define __END_DECLS } |
| 42 | #else |
| 43 | #define __BEGIN_DECLS |
| 44 | #define __END_DECLS |
| 45 | #endif |
| 46 | |
| 47 | /* |
| 48 | * This code has been put in place to help reduce the addition of |
| 49 | * compiler specific defines in FreeBSD code. It helps to aid in |
| 50 | * having a compiler-agnostic source tree. |
| 51 | */ |
| 52 | |
| 53 | #if defined(__GNUC__) || defined(__INTEL_COMPILER) |
| 54 | |
| 55 | #if __GNUC__ >= 3 || defined(__INTEL_COMPILER) |
| 56 | #define __GNUCLIKE_ASM 3 |
| 57 | #define __GNUCLIKE_MATH_BUILTIN_CONSTANTS |
| 58 | #else |
| 59 | #define __GNUCLIKE_ASM 2 |
| 60 | #endif |
| 61 | #define __GNUCLIKE___TYPEOF 1 |
| 62 | #define __GNUCLIKE___OFFSETOF 1 |
| 63 | #define __GNUCLIKE___SECTION 1 |
| 64 | |
| 65 | #ifndef __INTEL_COMPILER |
| 66 | # define __GNUCLIKE_CTOR_SECTION_HANDLING 1 |
| 67 | #endif |
| 68 | |
| 69 | #define __GNUCLIKE_BUILTIN_CONSTANT_P 1 |
| 70 | # if defined(__INTEL_COMPILER) && defined(__cplusplus) \ |
| 71 | && __INTEL_COMPILER < 800 |
| 72 | # undef __GNUCLIKE_BUILTIN_CONSTANT_P |
| 73 | # endif |
| 74 | |
| 75 | #if (__GNUC_MINOR__ > 95 || __GNUC__ >= 3) && !defined(__INTEL_COMPILER) |
| 76 | # define __GNUCLIKE_BUILTIN_VARARGS 1 |
| 77 | # define __GNUCLIKE_BUILTIN_STDARG 1 |
| 78 | # define __GNUCLIKE_BUILTIN_VAALIST 1 |
| 79 | #endif |
| 80 | |
| 81 | #if defined(__GNUC__) |
| 82 | # define __GNUC_VA_LIST_COMPATIBILITY 1 |
| 83 | #endif |
| 84 | |
| 85 | #ifndef __INTEL_COMPILER |
| 86 | # define __GNUCLIKE_BUILTIN_NEXT_ARG 1 |
| 87 | # define __GNUCLIKE_MATH_BUILTIN_RELOPS |
| 88 | #endif |
| 89 | |
| 90 | #define __GNUCLIKE_BUILTIN_MEMCPY 1 |
| 91 | |
| 92 | /* XXX: if __GNUC__ >= 2: not tested everywhere originally, where replaced */ |
| 93 | #define __CC_SUPPORTS_INLINE 1 |
| 94 | #define __CC_SUPPORTS___INLINE 1 |
| 95 | #define __CC_SUPPORTS___INLINE__ 1 |
| 96 | |
| 97 | #define __CC_SUPPORTS___FUNC__ 1 |
| 98 | #define __CC_SUPPORTS_WARNING 1 |
| 99 | |
| 100 | #define __CC_SUPPORTS_VARADIC_XXX 1 /* see varargs.h */ |
| 101 | |
| 102 | #define __CC_SUPPORTS_DYNAMIC_ARRAY_INIT 1 |
| 103 | |
| 104 | #endif /* __GNUC__ || __INTEL_COMPILER */ |
| 105 | |
| 106 | /* |
| 107 | * Macro to test if we're using a specific version of gcc or later. |
| 108 | */ |
| 109 | #if defined(__GNUC__) && !defined(__INTEL_COMPILER) |
| 110 | #define __GNUC_PREREQ__(ma, mi) \ |
| 111 | (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)) |
| 112 | #else |
| 113 | #define __GNUC_PREREQ__(ma, mi) 0 |
| 114 | #endif |
| 115 | |
| 116 | /* |
| 117 | * The __CONCAT macro is used to concatenate parts of symbol names, e.g. |
| 118 | * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. |
| 119 | * The __CONCAT macro is a bit tricky to use if it must work in non-ANSI |
| 120 | * mode -- there must be no spaces between its arguments, and for nested |
| 121 | * __CONCAT's, all the __CONCAT's must be at the left. __CONCAT can also |
| 122 | * concatenate double-quoted strings produced by the __STRING macro, but |
| 123 | * this only works with ANSI C. |
| 124 | * |
| 125 | * __XSTRING is like __STRING, but it expands any macros in its argument |
| 126 | * first. It is only available with ANSI C. |
| 127 | */ |
| 128 | #if defined(__STDC__) || defined(__cplusplus) |
| 129 | #define __P(protos) protos /* full-blown ANSI C */ |
| 130 | #define __CONCAT1(x,y) x ## y |
| 131 | #define __CONCAT(x,y) __CONCAT1(x,y) |
| 132 | #define __STRING(x) #x /* stringify without expanding x */ |
| 133 | #define __XSTRING(x) __STRING(x) /* expand x, then stringify */ |
| 134 | |
| 135 | #define __const const /* define reserved names to standard */ |
| 136 | #define __signed signed |
| 137 | #define __volatile volatile |
| 138 | #if defined(__cplusplus) |
| 139 | #define __inline inline /* convert to C++ keyword */ |
| 140 | #else |
| 141 | #if !(defined(__CC_SUPPORTS___INLINE)) |
| 142 | #define __inline /* delete GCC keyword */ |
| 143 | #endif /* ! __CC_SUPPORTS___INLINE */ |
| 144 | #endif /* !__cplusplus */ |
| 145 | |
| 146 | #else /* !(__STDC__ || __cplusplus) */ |
| 147 | #define __P(protos) () /* traditional C preprocessor */ |
| 148 | #define __CONCAT(x,y) x/**/y |
| 149 | #define __STRING(x) "x" |
| 150 | |
| 151 | #if !defined(__CC_SUPPORTS___INLINE) |
| 152 | #define __const /* delete pseudo-ANSI C keywords */ |
| 153 | #define __inline |
| 154 | #define __signed |
| 155 | #define __volatile |
| 156 | /* |
| 157 | * In non-ANSI C environments, new programs will want ANSI-only C keywords |
| 158 | * deleted from the program and old programs will want them left alone. |
| 159 | * When using a compiler other than gcc, programs using the ANSI C keywords |
| 160 | * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS. |
| 161 | * When using "gcc -traditional", we assume that this is the intent; if |
| 162 | * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone. |
| 163 | */ |
| 164 | #ifndef NO_ANSI_KEYWORDS |
| 165 | #define const /* delete ANSI C keywords */ |
| 166 | #define inline |
| 167 | #define signed |
| 168 | #define volatile |
| 169 | #endif /* !NO_ANSI_KEYWORDS */ |
| 170 | #endif /* !__CC_SUPPORTS___INLINE */ |
| 171 | #endif /* !(__STDC__ || __cplusplus) */ |
| 172 | |
| 173 | /* |
| 174 | * Compiler-dependent macros to help declare dead (non-returning) and |
| 175 | * pure (no side effects) functions, and unused variables. They are |
| 176 | * null except for versions of gcc that are known to support the features |
| 177 | * properly (old versions of gcc-2 supported the dead and pure features |
| 178 | * in a different (wrong) way). If we do not provide an implementation |
| 179 | * for a given compiler, let the compile fail if it is told to use |
| 180 | * a feature that we cannot live without. |
| 181 | */ |
| 182 | #ifdef lint |
| 183 | #define __dead2 |
| 184 | #define __pure2 |
| 185 | #define __unused |
| 186 | #define __packed |
| 187 | #define __aligned(x) |
| 188 | #define __section(x) |
| 189 | #else |
| 190 | #if !__GNUC_PREREQ__(2, 5) && !defined(__INTEL_COMPILER) |
| 191 | #define __dead2 |
| 192 | #define __pure2 |
| 193 | #define __unused |
| 194 | #endif |
| 195 | #if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7 && !defined(__INTEL_COMPILER) |
| 196 | #define __dead2 __attribute__((__noreturn__)) |
| 197 | #define __pure2 __attribute__((__const__)) |
| 198 | #define __unused |
| 199 | /* XXX Find out what to do for __packed, __aligned and __section */ |
| 200 | #endif |
| 201 | #if __GNUC_PREREQ__(2, 7) |
| 202 | #define __dead2 __attribute__((__noreturn__)) |
| 203 | #define __pure2 __attribute__((__const__)) |
| 204 | #define __unused __attribute__((__unused__)) |
| 205 | #define __used __attribute__((__used__)) |
| 206 | #define __packed __attribute__((__packed__)) |
| 207 | #define __aligned(x) __attribute__((__aligned__(x))) |
| 208 | #define __section(x) __attribute__((__section__(x))) |
| 209 | #endif |
| 210 | #if defined(__INTEL_COMPILER) |
| 211 | #define __dead2 __attribute__((__noreturn__)) |
| 212 | #define __pure2 __attribute__((__const__)) |
| 213 | #define __unused __attribute__((__unused__)) |
| 214 | #define __used __attribute__((__used__)) |
| 215 | #define __packed __attribute__((__packed__)) |
| 216 | #define __aligned(x) __attribute__((__aligned__(x))) |
| 217 | #define __section(x) __attribute__((__section__(x))) |
| 218 | #endif |
| 219 | #endif |
| 220 | |
| 221 | #if !__GNUC_PREREQ__(2, 95) |
| 222 | #define __alignof(x) __offsetof(struct { char __a; x __b; }, __b) |
| 223 | #endif |
| 224 | |
| 225 | /* |
| 226 | * Keywords added in C11. |
| 227 | */ |
| 228 | #if defined(__cplusplus) && __cplusplus >= 201103L |
| 229 | #define _Alignas(e) alignas(e) |
| 230 | #define _Alignof(e) alignof(e) |
| 231 | #define _Noreturn [[noreturn]] |
| 232 | #define _Static_assert(e, s) static_assert(e, s) |
| 233 | /* FIXME: change this to thread_local when clang in base supports it */ |
| 234 | #define _Thread_local __thread |
| 235 | #elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L |
| 236 | /* Do nothing. They are language keywords. */ |
| 237 | #else |
| 238 | /* Not supported. Implement them using our versions. */ |
| 239 | #define _Alignas(x) __aligned(x) |
| 240 | #define _Alignof(x) __alignof(x) |
| 241 | #define _Noreturn __dead2 |
| 242 | #define _Thread_local __thread |
| 243 | #ifdef __COUNTER__ |
| 244 | #define _Static_assert(x, y) __Static_assert(x, __COUNTER__) |
| 245 | #define __Static_assert(x, y) ___Static_assert(x, y) |
| 246 | #define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1] |
| 247 | #else |
| 248 | #define _Static_assert(x, y) struct __hack |
| 249 | #endif |
| 250 | #endif |
| 251 | |
| 252 | /* |
| 253 | * Emulation of C11 _Generic(). Unlike the previously defined C11 |
| 254 | * keywords, it is not possible to implement this using exactly the same |
| 255 | * syntax. Therefore implement something similar under the name |
| 256 | * __generic(). Unlike _Generic(), this macro can only distinguish |
| 257 | * between a single type, so it requires nested invocations to |
| 258 | * distinguish multiple cases. |
| 259 | */ |
| 260 | |
| 261 | #if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L |
| 262 | #define __generic(expr, t, yes, no) \ |
| 263 | _Generic(expr, t: yes, default: no) |
| 264 | #elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus) |
| 265 | #define __generic(expr, t, yes, no) \ |
| 266 | __builtin_choose_expr( \ |
| 267 | __builtin_types_compatible_p(__typeof(expr), t), yes, no) |
| 268 | #endif |
| 269 | |
| 270 | #if __GNUC_PREREQ__(2, 96) |
| 271 | #define __malloc_like __attribute__((__malloc__)) |
| 272 | #define __pure __attribute__((__pure__)) |
| 273 | #else |
| 274 | #define __malloc_like |
| 275 | #define __pure |
| 276 | #endif |
| 277 | |
| 278 | #if __GNUC_PREREQ__(3, 1) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800) |
| 279 | #define __always_inline __attribute__((__always_inline__)) |
| 280 | #else |
| 281 | #define __always_inline |
| 282 | #endif |
| 283 | |
| 284 | #if __GNUC_PREREQ__(3, 1) |
| 285 | #define __noinline __attribute__ ((__noinline__)) |
Soren Brinkmann | 2c1874e | 2016-01-20 15:32:23 -0800 | [diff] [blame^] | 286 | #define __deprecated __attribute__ ((__deprecated__)) |
Harry Liebel | 0f702c6 | 2013-12-17 18:19:04 +0000 | [diff] [blame] | 287 | #else |
| 288 | #define __noinline |
Soren Brinkmann | ce199a7 | 2016-01-14 09:56:06 -0800 | [diff] [blame] | 289 | #define __deprecated |
Harry Liebel | 0f702c6 | 2013-12-17 18:19:04 +0000 | [diff] [blame] | 290 | #endif |
| 291 | |
| 292 | #if __GNUC_PREREQ__(3, 3) |
| 293 | #define __nonnull(x) __attribute__((__nonnull__(x))) |
| 294 | #else |
| 295 | #define __nonnull(x) |
| 296 | #endif |
| 297 | |
| 298 | #if __GNUC_PREREQ__(3, 4) |
| 299 | #define __fastcall __attribute__((__fastcall__)) |
| 300 | #else |
| 301 | #define __fastcall |
| 302 | #endif |
| 303 | |
| 304 | #if __GNUC_PREREQ__(4, 1) |
| 305 | #define __returns_twice __attribute__((__returns_twice__)) |
| 306 | #else |
| 307 | #define __returns_twice |
| 308 | #endif |
| 309 | |
| 310 | /* XXX: should use `#if __STDC_VERSION__ < 199901'. */ |
| 311 | #if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER) |
| 312 | #define __func__ NULL |
| 313 | #endif |
| 314 | |
| 315 | #if (defined(__INTEL_COMPILER) || (defined(__GNUC__) && __GNUC__ >= 2)) && !defined(__STRICT_ANSI__) || __STDC_VERSION__ >= 199901 |
| 316 | #define __LONG_LONG_SUPPORTED |
| 317 | #endif |
| 318 | |
| 319 | /* C++11 exposes a load of C99 stuff */ |
| 320 | #if defined(__cplusplus) && __cplusplus >= 201103L |
| 321 | #define __LONG_LONG_SUPPORTED |
| 322 | #ifndef __STDC_LIMIT_MACROS |
| 323 | #define __STDC_LIMIT_MACROS |
| 324 | #endif |
| 325 | #ifndef __STDC_CONSTANT_MACROS |
| 326 | #define __STDC_CONSTANT_MACROS |
| 327 | #endif |
| 328 | #endif |
| 329 | |
| 330 | /* |
| 331 | * GCC 2.95 provides `__restrict' as an extension to C90 to support the |
| 332 | * C99-specific `restrict' type qualifier. We happen to use `__restrict' as |
| 333 | * a way to define the `restrict' type qualifier without disturbing older |
| 334 | * software that is unaware of C99 keywords. |
| 335 | */ |
| 336 | #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95) |
| 337 | #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901 || defined(lint) |
| 338 | #define __restrict |
| 339 | #else |
| 340 | #define __restrict restrict |
| 341 | #endif |
| 342 | #endif |
| 343 | |
| 344 | /* |
| 345 | * GNU C version 2.96 adds explicit branch prediction so that |
| 346 | * the CPU back-end can hint the processor and also so that |
| 347 | * code blocks can be reordered such that the predicted path |
| 348 | * sees a more linear flow, thus improving cache behavior, etc. |
| 349 | * |
| 350 | * The following two macros provide us with a way to utilize this |
| 351 | * compiler feature. Use __predict_true() if you expect the expression |
| 352 | * to evaluate to true, and __predict_false() if you expect the |
| 353 | * expression to evaluate to false. |
| 354 | * |
| 355 | * A few notes about usage: |
| 356 | * |
| 357 | * * Generally, __predict_false() error condition checks (unless |
| 358 | * you have some _strong_ reason to do otherwise, in which case |
| 359 | * document it), and/or __predict_true() `no-error' condition |
| 360 | * checks, assuming you want to optimize for the no-error case. |
| 361 | * |
| 362 | * * Other than that, if you don't know the likelihood of a test |
| 363 | * succeeding from empirical or other `hard' evidence, don't |
| 364 | * make predictions. |
| 365 | * |
| 366 | * * These are meant to be used in places that are run `a lot'. |
| 367 | * It is wasteful to make predictions in code that is run |
| 368 | * seldomly (e.g. at subsystem initialization time) as the |
| 369 | * basic block reordering that this affects can often generate |
| 370 | * larger code. |
| 371 | */ |
| 372 | #if __GNUC_PREREQ__(2, 96) |
| 373 | #define __predict_true(exp) __builtin_expect((exp), 1) |
| 374 | #define __predict_false(exp) __builtin_expect((exp), 0) |
| 375 | #else |
| 376 | #define __predict_true(exp) (exp) |
| 377 | #define __predict_false(exp) (exp) |
| 378 | #endif |
| 379 | |
| 380 | #if __GNUC_PREREQ__(4, 2) |
| 381 | #define __hidden __attribute__((__visibility__("hidden"))) |
| 382 | #define __exported __attribute__((__visibility__("default"))) |
| 383 | #else |
| 384 | #define __hidden |
| 385 | #define __exported |
| 386 | #endif |
| 387 | |
| 388 | /* |
| 389 | * We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h> |
| 390 | * require it. |
| 391 | */ |
| 392 | #if __GNUC_PREREQ__(4, 1) |
| 393 | #define __offsetof(type, field) __builtin_offsetof(type, field) |
| 394 | #else |
| 395 | #ifndef __cplusplus |
| 396 | #define __offsetof(type, field) \ |
| 397 | ((__size_t)(__uintptr_t)((const volatile void *)&((type *)0)->field)) |
| 398 | #else |
| 399 | #define __offsetof(type, field) \ |
| 400 | (__offsetof__ (reinterpret_cast <__size_t> \ |
| 401 | (&reinterpret_cast <const volatile char &> \ |
| 402 | (static_cast<type *> (0)->field)))) |
| 403 | #endif |
| 404 | #endif |
| 405 | #define __rangeof(type, start, end) \ |
| 406 | (__offsetof(type, end) - __offsetof(type, start)) |
| 407 | |
| 408 | /* |
| 409 | * Given the pointer x to the member m of the struct s, return |
| 410 | * a pointer to the containing structure. When using GCC, we first |
| 411 | * assign pointer x to a local variable, to check that its type is |
| 412 | * compatible with member m. |
| 413 | */ |
| 414 | #if __GNUC_PREREQ__(3, 1) |
| 415 | #define __containerof(x, s, m) ({ \ |
| 416 | const volatile __typeof(((s *)0)->m) *__x = (x); \ |
| 417 | __DEQUALIFY(s *, (const volatile char *)__x - __offsetof(s, m));\ |
| 418 | }) |
| 419 | #else |
| 420 | #define __containerof(x, s, m) \ |
| 421 | __DEQUALIFY(s *, (const volatile char *)(x) - __offsetof(s, m)) |
| 422 | #endif |
| 423 | |
| 424 | /* |
| 425 | * Compiler-dependent macros to declare that functions take printf-like |
| 426 | * or scanf-like arguments. They are null except for versions of gcc |
| 427 | * that are known to support the features properly (old versions of gcc-2 |
| 428 | * didn't permit keeping the keywords out of the application namespace). |
| 429 | */ |
| 430 | #if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER) |
| 431 | #define __printflike(fmtarg, firstvararg) |
| 432 | #define __scanflike(fmtarg, firstvararg) |
| 433 | #define __format_arg(fmtarg) |
| 434 | #define __strfmonlike(fmtarg, firstvararg) |
| 435 | #define __strftimelike(fmtarg, firstvararg) |
| 436 | #else |
| 437 | #define __printflike(fmtarg, firstvararg) \ |
| 438 | __attribute__((__format__ (__printf__, fmtarg, firstvararg))) |
| 439 | #define __scanflike(fmtarg, firstvararg) \ |
| 440 | __attribute__((__format__ (__scanf__, fmtarg, firstvararg))) |
| 441 | #define __format_arg(fmtarg) __attribute__((__format_arg__ (fmtarg))) |
| 442 | #define __strfmonlike(fmtarg, firstvararg) \ |
| 443 | __attribute__((__format__ (__strfmon__, fmtarg, firstvararg))) |
| 444 | #define __strftimelike(fmtarg, firstvararg) \ |
| 445 | __attribute__((__format__ (__strftime__, fmtarg, firstvararg))) |
| 446 | #endif |
| 447 | |
| 448 | /* Compiler-dependent macros that rely on FreeBSD-specific extensions. */ |
| 449 | #if __FreeBSD_cc_version >= 300001 && defined(__GNUC__) && !defined(__INTEL_COMPILER) |
| 450 | #define __printf0like(fmtarg, firstvararg) \ |
| 451 | __attribute__((__format__ (__printf0__, fmtarg, firstvararg))) |
| 452 | #else |
| 453 | #define __printf0like(fmtarg, firstvararg) |
| 454 | #endif |
| 455 | |
| 456 | #if defined(__GNUC__) || defined(__INTEL_COMPILER) |
| 457 | #ifndef __INTEL_COMPILER |
| 458 | #define __strong_reference(sym,aliassym) \ |
| 459 | extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym))) |
| 460 | #endif |
| 461 | #ifdef __STDC__ |
| 462 | #define __weak_reference(sym,alias) \ |
| 463 | __asm__(".weak " #alias); \ |
| 464 | __asm__(".equ " #alias ", " #sym) |
| 465 | #define __warn_references(sym,msg) \ |
| 466 | __asm__(".section .gnu.warning." #sym); \ |
| 467 | __asm__(".asciz \"" msg "\""); \ |
| 468 | __asm__(".previous") |
| 469 | #define __sym_compat(sym,impl,verid) \ |
| 470 | __asm__(".symver " #impl ", " #sym "@" #verid) |
| 471 | #define __sym_default(sym,impl,verid) \ |
| 472 | __asm__(".symver " #impl ", " #sym "@@" #verid) |
| 473 | #else |
| 474 | #define __weak_reference(sym,alias) \ |
| 475 | __asm__(".weak alias"); \ |
| 476 | __asm__(".equ alias, sym") |
| 477 | #define __warn_references(sym,msg) \ |
| 478 | __asm__(".section .gnu.warning.sym"); \ |
| 479 | __asm__(".asciz \"msg\""); \ |
| 480 | __asm__(".previous") |
| 481 | #define __sym_compat(sym,impl,verid) \ |
| 482 | __asm__(".symver impl, sym@verid") |
| 483 | #define __sym_default(impl,sym,verid) \ |
| 484 | __asm__(".symver impl, sym@@verid") |
| 485 | #endif /* __STDC__ */ |
| 486 | #endif /* __GNUC__ || __INTEL_COMPILER */ |
| 487 | |
| 488 | #define __GLOBL1(sym) __asm__(".globl " #sym) |
| 489 | #define __GLOBL(sym) __GLOBL1(sym) |
| 490 | |
| 491 | #if defined(__GNUC__) || defined(__INTEL_COMPILER) |
| 492 | #define __IDSTRING(name,string) __asm__(".ident\t\"" string "\"") |
| 493 | #else |
| 494 | /* |
| 495 | * The following definition might not work well if used in header files, |
| 496 | * but it should be better than nothing. If you want a "do nothing" |
| 497 | * version, then it should generate some harmless declaration, such as: |
| 498 | * #define __IDSTRING(name,string) struct __hack |
| 499 | */ |
| 500 | #define __IDSTRING(name,string) static const char name[] __unused = string |
| 501 | #endif |
| 502 | |
| 503 | /* |
| 504 | * Embed the rcs id of a source file in the resulting library. Note that in |
| 505 | * more recent ELF binutils, we use .ident allowing the ID to be stripped. |
| 506 | * Usage: |
| 507 | * __FBSDID("$FreeBSD$"); |
| 508 | */ |
| 509 | #ifndef __FBSDID |
| 510 | #if !defined(lint) && !defined(STRIP_FBSDID) |
| 511 | #define __FBSDID(s) __IDSTRING(__CONCAT(__rcsid_,__LINE__),s) |
| 512 | #else |
| 513 | #define __FBSDID(s) struct __hack |
| 514 | #endif |
| 515 | #endif |
| 516 | |
| 517 | #ifndef __RCSID |
| 518 | #ifndef NO__RCSID |
| 519 | #define __RCSID(s) __IDSTRING(__CONCAT(__rcsid_,__LINE__),s) |
| 520 | #else |
| 521 | #define __RCSID(s) struct __hack |
| 522 | #endif |
| 523 | #endif |
| 524 | |
| 525 | #ifndef __RCSID_SOURCE |
| 526 | #ifndef NO__RCSID_SOURCE |
| 527 | #define __RCSID_SOURCE(s) __IDSTRING(__CONCAT(__rcsid_source_,__LINE__),s) |
| 528 | #else |
| 529 | #define __RCSID_SOURCE(s) struct __hack |
| 530 | #endif |
| 531 | #endif |
| 532 | |
| 533 | #ifndef __SCCSID |
| 534 | #ifndef NO__SCCSID |
| 535 | #define __SCCSID(s) __IDSTRING(__CONCAT(__sccsid_,__LINE__),s) |
| 536 | #else |
| 537 | #define __SCCSID(s) struct __hack |
| 538 | #endif |
| 539 | #endif |
| 540 | |
| 541 | #ifndef __COPYRIGHT |
| 542 | #ifndef NO__COPYRIGHT |
| 543 | #define __COPYRIGHT(s) __IDSTRING(__CONCAT(__copyright_,__LINE__),s) |
| 544 | #else |
| 545 | #define __COPYRIGHT(s) struct __hack |
| 546 | #endif |
| 547 | #endif |
| 548 | |
| 549 | #ifndef __DECONST |
| 550 | #define __DECONST(type, var) ((type)(__uintptr_t)(const void *)(var)) |
| 551 | #endif |
| 552 | |
| 553 | #ifndef __DEVOLATILE |
| 554 | #define __DEVOLATILE(type, var) ((type)(__uintptr_t)(volatile void *)(var)) |
| 555 | #endif |
| 556 | |
| 557 | #ifndef __DEQUALIFY |
| 558 | #define __DEQUALIFY(type, var) ((type)(__uintptr_t)(const volatile void *)(var)) |
| 559 | #endif |
| 560 | |
| 561 | /*- |
| 562 | * The following definitions are an extension of the behavior originally |
| 563 | * implemented in <sys/_posix.h>, but with a different level of granularity. |
| 564 | * POSIX.1 requires that the macros we test be defined before any standard |
| 565 | * header file is included. |
| 566 | * |
| 567 | * Here's a quick run-down of the versions: |
| 568 | * defined(_POSIX_SOURCE) 1003.1-1988 |
| 569 | * _POSIX_C_SOURCE == 1 1003.1-1990 |
| 570 | * _POSIX_C_SOURCE == 2 1003.2-1992 C Language Binding Option |
| 571 | * _POSIX_C_SOURCE == 199309 1003.1b-1993 |
| 572 | * _POSIX_C_SOURCE == 199506 1003.1c-1995, 1003.1i-1995, |
| 573 | * and the omnibus ISO/IEC 9945-1: 1996 |
| 574 | * _POSIX_C_SOURCE == 200112 1003.1-2001 |
| 575 | * _POSIX_C_SOURCE == 200809 1003.1-2008 |
| 576 | * |
| 577 | * In addition, the X/Open Portability Guide, which is now the Single UNIX |
| 578 | * Specification, defines a feature-test macro which indicates the version of |
| 579 | * that specification, and which subsumes _POSIX_C_SOURCE. |
| 580 | * |
| 581 | * Our macros begin with two underscores to avoid namespace screwage. |
| 582 | */ |
| 583 | |
| 584 | /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */ |
| 585 | #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1 |
| 586 | #undef _POSIX_C_SOURCE /* Probably illegal, but beyond caring now. */ |
| 587 | #define _POSIX_C_SOURCE 199009 |
| 588 | #endif |
| 589 | |
| 590 | /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */ |
| 591 | #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2 |
| 592 | #undef _POSIX_C_SOURCE |
| 593 | #define _POSIX_C_SOURCE 199209 |
| 594 | #endif |
| 595 | |
| 596 | /* Deal with various X/Open Portability Guides and Single UNIX Spec. */ |
| 597 | #ifdef _XOPEN_SOURCE |
| 598 | #if _XOPEN_SOURCE - 0 >= 700 |
| 599 | #define __XSI_VISIBLE 700 |
| 600 | #undef _POSIX_C_SOURCE |
| 601 | #define _POSIX_C_SOURCE 200809 |
| 602 | #elif _XOPEN_SOURCE - 0 >= 600 |
| 603 | #define __XSI_VISIBLE 600 |
| 604 | #undef _POSIX_C_SOURCE |
| 605 | #define _POSIX_C_SOURCE 200112 |
| 606 | #elif _XOPEN_SOURCE - 0 >= 500 |
| 607 | #define __XSI_VISIBLE 500 |
| 608 | #undef _POSIX_C_SOURCE |
| 609 | #define _POSIX_C_SOURCE 199506 |
| 610 | #endif |
| 611 | #endif |
| 612 | |
| 613 | /* |
| 614 | * Deal with all versions of POSIX. The ordering relative to the tests above is |
| 615 | * important. |
| 616 | */ |
| 617 | #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) |
| 618 | #define _POSIX_C_SOURCE 198808 |
| 619 | #endif |
| 620 | #ifdef _POSIX_C_SOURCE |
| 621 | #if _POSIX_C_SOURCE >= 200809 |
| 622 | #define __POSIX_VISIBLE 200809 |
| 623 | #define __ISO_C_VISIBLE 1999 |
| 624 | #elif _POSIX_C_SOURCE >= 200112 |
| 625 | #define __POSIX_VISIBLE 200112 |
| 626 | #define __ISO_C_VISIBLE 1999 |
| 627 | #elif _POSIX_C_SOURCE >= 199506 |
| 628 | #define __POSIX_VISIBLE 199506 |
| 629 | #define __ISO_C_VISIBLE 1990 |
| 630 | #elif _POSIX_C_SOURCE >= 199309 |
| 631 | #define __POSIX_VISIBLE 199309 |
| 632 | #define __ISO_C_VISIBLE 1990 |
| 633 | #elif _POSIX_C_SOURCE >= 199209 |
| 634 | #define __POSIX_VISIBLE 199209 |
| 635 | #define __ISO_C_VISIBLE 1990 |
| 636 | #elif _POSIX_C_SOURCE >= 199009 |
| 637 | #define __POSIX_VISIBLE 199009 |
| 638 | #define __ISO_C_VISIBLE 1990 |
| 639 | #else |
| 640 | #define __POSIX_VISIBLE 198808 |
| 641 | #define __ISO_C_VISIBLE 0 |
| 642 | #endif /* _POSIX_C_SOURCE */ |
| 643 | #else |
| 644 | /*- |
| 645 | * Deal with _ANSI_SOURCE: |
| 646 | * If it is defined, and no other compilation environment is explicitly |
| 647 | * requested, then define our internal feature-test macros to zero. This |
| 648 | * makes no difference to the preprocessor (undefined symbols in preprocessing |
| 649 | * expressions are defined to have value zero), but makes it more convenient for |
| 650 | * a test program to print out the values. |
| 651 | * |
| 652 | * If a program mistakenly defines _ANSI_SOURCE and some other macro such as |
| 653 | * _POSIX_C_SOURCE, we will assume that it wants the broader compilation |
| 654 | * environment (and in fact we will never get here). |
| 655 | */ |
| 656 | #if defined(_ANSI_SOURCE) /* Hide almost everything. */ |
| 657 | #define __POSIX_VISIBLE 0 |
| 658 | #define __XSI_VISIBLE 0 |
| 659 | #define __BSD_VISIBLE 0 |
| 660 | #define __ISO_C_VISIBLE 1990 |
| 661 | #elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */ |
| 662 | #define __POSIX_VISIBLE 0 |
| 663 | #define __XSI_VISIBLE 0 |
| 664 | #define __BSD_VISIBLE 0 |
| 665 | #define __ISO_C_VISIBLE 1999 |
| 666 | #else /* Default environment: show everything. */ |
| 667 | #define __POSIX_VISIBLE 200809 |
| 668 | #define __XSI_VISIBLE 700 |
| 669 | #define __BSD_VISIBLE 1 |
| 670 | #define __ISO_C_VISIBLE 1999 |
| 671 | #endif |
| 672 | #endif |
| 673 | |
| 674 | #ifndef __has_feature |
| 675 | #define __has_feature(x) 0 |
| 676 | #endif |
| 677 | #ifndef __has_include |
| 678 | #define __has_include(x) 0 |
| 679 | #endif |
| 680 | #ifndef __has_builtin |
| 681 | #define __has_builtin(x) 0 |
| 682 | #endif |
| 683 | |
| 684 | #if defined(__mips) || defined(__powerpc64__) || defined(__arm__) |
| 685 | #define __NO_TLS 1 |
| 686 | #endif |
| 687 | |
| 688 | #endif /* !_SYS_CDEFS_H_ */ |