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984263bc MD |
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 | * 3. All advertising materials mentioning features or use of this software | |
17 | * must display the following acknowledgement: | |
18 | * This product includes software developed by the University of | |
19 | * California, Berkeley and its contributors. | |
20 | * 4. Neither the name of the University nor the names of its contributors | |
21 | * may be used to endorse or promote products derived from this software | |
22 | * without specific prior written permission. | |
23 | * | |
24 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
25 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
26 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
27 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
28 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
29 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
30 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
31 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
32 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
33 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
34 | * SUCH DAMAGE. | |
35 | * | |
36 | * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 | |
37 | * $FreeBSD: src/sys/sys/cdefs.h,v 1.28.2.8 2002/09/18 04:05:13 mikeh Exp $ | |
2c292fb2 | 38 | * $DragonFly: src/sys/sys/cdefs.h,v 1.20 2008/11/20 11:27:24 hasso Exp $ |
984263bc MD |
39 | */ |
40 | ||
41 | #ifndef _SYS_CDEFS_H_ | |
42 | #define _SYS_CDEFS_H_ | |
43 | ||
44 | #if defined(__cplusplus) | |
45 | #define __BEGIN_DECLS extern "C" { | |
46 | #define __END_DECLS } | |
47 | #else | |
48 | #define __BEGIN_DECLS | |
49 | #define __END_DECLS | |
50 | #endif | |
51 | ||
dc62b251 MD |
52 | /* |
53 | * Macro to test if we are using a specific version of gcc or later. | |
54 | */ | |
43c9ef94 JR |
55 | #if defined(__GNUC__) && !defined(__INTEL_COMPILER) |
56 | #define __GNUC_PREREQ__(ma, mi) \ | |
dc62b251 MD |
57 | (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)) |
58 | #else | |
43c9ef94 | 59 | #define __GNUC_PREREQ__(ma, mi) 0 |
dc62b251 MD |
60 | #endif |
61 | ||
f754816e | 62 | /* |
d9abbdda | 63 | * The __VM_CACHELINE_SIZE macro defines the common cache line alignment |
f754816e HP |
64 | * size that can be found across most recent and somewhat latest Intel |
65 | * hardware, i.e. L1 cache sizes etc. | |
66 | * | |
67 | * If needed, this value can be TUNED. Suitable values for this macro | |
68 | * are 32, 64 and 128 bytes. The unit of measurement for this macro is | |
69 | * bytes. | |
70 | * | |
71 | * XXX: This macro and related macros will eventually move to a MD | |
72 | * header, but currently, we do need such a hierarchy. | |
73 | */ | |
ddca1582 MD |
74 | #define __VM_CACHELINE_SIZE 64 |
75 | #define __VM_CACHELINE_ALIGN(n) \ | |
76 | (((n) + __VM_CACHELINE_SIZE - 1) / __VM_CACHELINE_SIZE) | |
f754816e | 77 | |
984263bc MD |
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 to use if it must work in non-ANSI | |
82 | * mode -- there must be no spaces between its arguments, and for nested | |
83 | * __CONCAT's, all the __CONCAT's must be at the left. __CONCAT can also | |
84 | * concatenate double-quoted strings produced by the __STRING macro, but | |
85 | * this only works with ANSI C. | |
86 | * | |
87 | * __XSTRING is like __STRING, but it expands any macros in its argument | |
88 | * first. It is only available with ANSI C. | |
89 | */ | |
90 | #if defined(__STDC__) || defined(__cplusplus) | |
91 | #define __P(protos) protos /* full-blown ANSI C */ | |
92 | #define __CONCAT1(x,y) x ## y | |
93 | #define __CONCAT(x,y) __CONCAT1(x,y) | |
94 | #define __STRING(x) #x /* stringify without expanding x */ | |
95 | #define __XSTRING(x) __STRING(x) /* expand x, then stringify */ | |
96 | ||
97 | #define __const const /* define reserved names to standard */ | |
98 | #define __signed signed | |
99 | #define __volatile volatile | |
100 | #if defined(__cplusplus) | |
101 | #define __inline inline /* convert to C++ keyword */ | |
102 | #else | |
103 | #ifndef __GNUC__ | |
104 | #define __inline /* delete GCC keyword */ | |
105 | #endif /* !__GNUC__ */ | |
106 | #endif /* !__cplusplus */ | |
107 | ||
108 | #else /* !(__STDC__ || __cplusplus) */ | |
109 | #define __P(protos) () /* traditional C preprocessor */ | |
110 | #define __CONCAT(x,y) x/**/y | |
111 | #define __STRING(x) "x" | |
112 | ||
113 | #ifndef __GNUC__ | |
114 | #define __const /* delete pseudo-ANSI C keywords */ | |
115 | #define __inline | |
116 | #define __signed | |
117 | #define __volatile | |
118 | /* | |
119 | * In non-ANSI C environments, new programs will want ANSI-only C keywords | |
120 | * deleted from the program and old programs will want them left alone. | |
121 | * When using a compiler other than gcc, programs using the ANSI C keywords | |
122 | * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS. | |
123 | * When using "gcc -traditional", we assume that this is the intent; if | |
124 | * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone. | |
125 | */ | |
126 | #ifndef NO_ANSI_KEYWORDS | |
127 | #define const /* delete ANSI C keywords */ | |
128 | #define inline | |
129 | #define signed | |
130 | #define volatile | |
131 | #endif /* !NO_ANSI_KEYWORDS */ | |
132 | #endif /* !__GNUC__ */ | |
133 | #endif /* !(__STDC__ || __cplusplus) */ | |
134 | ||
135 | /* | |
136 | * Compiler-dependent macros to help declare dead (non-returning) and | |
137 | * pure (no side effects) functions, and unused variables. They are | |
138 | * null except for versions of gcc that are known to support the features | |
139 | * properly (old versions of gcc-2 supported the dead and pure features | |
140 | * in a different (wrong) way). | |
141 | */ | |
dc62b251 MD |
142 | #ifdef lint |
143 | ||
144 | #define __dead2 | |
ceb0d0c4 | 145 | #define __pure |
dc62b251 MD |
146 | #define __pure2 |
147 | #define __unused | |
148 | #define __packed | |
149 | #define __aligned(x) | |
150 | #define __section(x) | |
151 | #define __always_inline | |
152 | #define __nonnull(x) | |
153 | ||
154 | #else | |
155 | ||
3d28a533 | 156 | #if !__GNUC_PREREQ__(2, 7) |
984263bc MD |
157 | #define __dead2 |
158 | #define __pure2 | |
159 | #define __unused | |
160 | #endif | |
dc62b251 | 161 | |
dc62b251 | 162 | #if __GNUC_PREREQ__(2, 7) |
984263bc MD |
163 | #define __dead2 __attribute__((__noreturn__)) |
164 | #define __pure2 __attribute__((__const__)) | |
165 | #define __unused __attribute__((__unused__)) | |
dc62b251 MD |
166 | #define __packed __attribute__((__packed__)) |
167 | #define __aligned(x) __attribute__((__aligned__(x))) | |
168 | #define __section(x) __attribute__((__section__(x))) | |
169 | #endif | |
170 | ||
74c78f9b | 171 | #if __GNUC_PREREQ__(2, 96) |
ceb0d0c4 JS |
172 | #define __pure __attribute__((__pure__)) |
173 | #else | |
174 | #define __pure __pure2 | |
175 | #endif | |
176 | ||
dc62b251 MD |
177 | #if __GNUC_PREREQ__(3, 1) |
178 | #define __always_inline __attribute__((__always_inline__)) | |
e0f95098 | 179 | #define __noinline __attribute__((__noinline__)) |
dc62b251 MD |
180 | #else |
181 | #define __always_inline | |
e0f95098 | 182 | #define __noinline |
dc62b251 MD |
183 | #endif |
184 | ||
185 | #if __GNUC_PREREQ__(3, 3) | |
186 | #define __nonnull(x) __attribute__((__nonnull__(x))) | |
efb8080e | 187 | #define __used __attribute__((__used__)) |
dc62b251 MD |
188 | #else |
189 | #define __nonnull(x) | |
efb8080e | 190 | #define __used __unused |
dc62b251 MD |
191 | #endif |
192 | ||
dc62b251 MD |
193 | #endif /* LINT */ |
194 | ||
3d28a533 JS |
195 | #if !__GNUC_PREREQ__(2, 7) && __STDC_VERSION < 199901 |
196 | #define __func__ NULL | |
984263bc MD |
197 | #endif |
198 | ||
3d28a533 JS |
199 | #if (__GNUC_PREREQ__(2, 0) && !defined(__STRICT_ANSI)) || \ |
200 | __STDC_VERSION__ >= 199901 | |
984263bc MD |
201 | #define __LONG_LONG_SUPPORTED |
202 | #endif | |
203 | ||
ae0ec55c DX |
204 | /* |
205 | * GNU C version 2.96 adds explicit branch prediction so that | |
206 | * the CPU back-end can hint the processor and also so that | |
207 | * code blocks can be reordered such that the predicted path | |
208 | * sees a more linear flow, thus improving cache behavior, etc. | |
209 | * | |
210 | * The following two macros provide us with a way to utilize this | |
211 | * compiler feature. Use __predict_true() if you expect the expression | |
212 | * to evaluate to true, and __predict_false() if you expect the | |
213 | * expression to evaluate to false. | |
214 | * | |
215 | * A few notes about usage: | |
216 | * | |
217 | * * Generally, __predict_false() error condition checks (unless | |
218 | * you have some _strong_ reason to do otherwise, in which case | |
219 | * document it), and/or __predict_true() `no-error' condition | |
220 | * checks, assuming you want to optimize for the no-error case. | |
221 | * | |
222 | * * Other than that, if you don't know the likelihood of a test | |
223 | * succeeding from empirical or other `hard' evidence, don't | |
224 | * make predictions. | |
225 | * | |
226 | * * These are meant to be used in places that are run `a lot'. | |
227 | * It is wasteful to make predictions in code that is run | |
228 | * seldomly (e.g. at subsystem initialization time) as the | |
229 | * basic block reordering that this affects can often generate | |
230 | * larger code. | |
231 | */ | |
232 | #if __GNUC_PREREQ__(2, 96) | |
233 | #define __predict_true(exp) __builtin_expect((exp), 1) | |
234 | #define __predict_false(exp) __builtin_expect((exp), 0) | |
235 | #else | |
236 | #define __predict_true(exp) (exp) | |
237 | #define __predict_false(exp) (exp) | |
238 | #endif | |
239 | ||
984263bc | 240 | /* |
3d28a533 JS |
241 | * GCC 2.95 and later provides `__restrict' as an extention to C90 to support |
242 | * the C99-specific `restrict' type qualifier. We happen to use `__restrict' | |
243 | * as a way to define the `restrict' type qualifier without disturbing older | |
984263bc MD |
244 | * software that is unaware of C99 keywords. |
245 | */ | |
3d28a533 | 246 | #if !__GNUC_PREREQ__(2, 95) |
984263bc MD |
247 | #if __STDC_VERSION__ < 199901 |
248 | #define __restrict | |
249 | #else | |
250 | #define __restrict restrict | |
251 | #endif | |
252 | #endif | |
253 | ||
254 | /* | |
255 | * Compiler-dependent macros to declare that functions take printf-like | |
256 | * or scanf-like arguments. They are null except for versions of gcc | |
257 | * that are known to support the features properly (old versions of gcc-2 | |
258 | * didn't permit keeping the keywords out of the application namespace). | |
38139e70 JS |
259 | * |
260 | * The printf0like macro for GCC 2 uses DragonFly specific compiler extensions. | |
984263bc | 261 | */ |
3d28a533 | 262 | #if !__GNUC_PREREQ__(2, 7) |
984263bc MD |
263 | #define __printflike(fmtarg, firstvararg) |
264 | #define __scanflike(fmtarg, firstvararg) | |
38139e70 | 265 | #define __printf0like(fmtarg, firstvararg) |
e0f95098 | 266 | #define __format_arg(fmtarg) |
3d28a533 | 267 | #elif __GNUC_PREREQ__(3, 0) |
38139e70 JS |
268 | #define __printflike(fmtarg, firstvararg) \ |
269 | __attribute__((__nonnull__(fmtarg), \ | |
270 | __format__ (__printf__, fmtarg, firstvararg))) | |
271 | #define __printf0like(fmtarg, firstvararg) \ | |
272 | __attribute__((__format__ (__printf__, fmtarg, firstvararg))) | |
273 | #define __scanflike(fmtarg, firstvararg) \ | |
274 | __attribute__((__format__ (__scanf__, fmtarg, firstvararg))) | |
e0f95098 PA |
275 | #define __format_arg(fmtarg) \ |
276 | __attribute__((__format_arg__ (fmtarg))) | |
38139e70 | 277 | |
984263bc MD |
278 | #else |
279 | #define __printflike(fmtarg, firstvararg) \ | |
280 | __attribute__((__format__ (__printf__, fmtarg, firstvararg))) | |
38139e70 JS |
281 | #define __printf0like(fmtarg, firstvararg) \ |
282 | __attribute__((__format__ (__printf0__, fmtarg, firstvararg))) | |
984263bc MD |
283 | #define __scanflike(fmtarg, firstvararg) \ |
284 | __attribute__((__format__ (__scanf__, fmtarg, firstvararg))) | |
e0f95098 PA |
285 | #define __format_arg(fmtarg) \ |
286 | __attribute__((__format_arg__ (fmtarg))) | |
287 | ||
984263bc MD |
288 | #endif |
289 | ||
3d28a533 | 290 | #if !__GNUC_PREREQ__(3, 0) |
18ba5b61 MD |
291 | #define __ARRAY_ZERO 0 |
292 | #else | |
293 | #define __ARRAY_ZERO | |
294 | #endif | |
295 | ||
25fffb38 JM |
296 | #if __GNUC_PREREQ__(4, 0) |
297 | #define __exported __attribute__((__visibility__("default"))) | |
298 | #define __dso_public __attribute__((__visibility__("default"))) | |
299 | #define __dso_hidden __attribute__((__visibility__("hidden"))) | |
300 | #else | |
301 | #define __exported | |
302 | #define __dso_public | |
303 | #define __dso_hidden | |
304 | #endif | |
305 | ||
754d5cac | 306 | /* |
2ea04d5f | 307 | * A convenient constructor macro, GCC 4.3.0 added priority support to |
754d5cac SG |
308 | * constructors, provide a compatible interface for both. |
309 | */ | |
310 | #if __GNUC_PREREQ__(4, 3) | |
311 | #define __constructor(prio) __attribute__((constructor(prio))) | |
312 | #else | |
313 | #define __constructor(prio) __attribute__((constructor)) | |
314 | #endif | |
315 | ||
f754816e HP |
316 | /* |
317 | * Handy GCC based macros: | |
318 | * | |
319 | * __cachealign: | |
320 | * | |
321 | * The __cachealign macro can be used for cache line aligning structures | |
322 | * of small to medium size. It aligns the particular structure or | |
323 | * storage type to a system default cache line alignment, thus giving us | |
324 | * a much more better cache utilization by making the hardware work at | |
325 | * its best burst speeds. | |
326 | * | |
327 | * __usereg: | |
328 | * | |
329 | * The __usereg macro can/should be used when a function contains | |
330 | * arguments not more than 3. It can be very useful to us due to the | |
331 | * message-passing nature of the kernel. | |
332 | * | |
333 | * !!NOTE - USAGE INFORMATION!! | |
334 | * | |
335 | * The __cachealign macro should not be used for data structures that are | |
336 | * as big struct proc, struct vnode, struct thread, and other structs which | |
337 | * are as big as them; simply because it will be useless in that case. | |
338 | * | |
339 | * The __usereg macro should be used whenever possible, i.e., when a function | |
340 | * does not exceed more than 3 arguments, and should not be used for vararg | |
341 | * type functions. | |
342 | * | |
343 | * In other words, AVOID MISUSE OF THESE MACROS. :-) | |
344 | */ | |
345 | #ifdef __GNUC__ | |
d9abbdda JS |
346 | #define __cachealign __attribute__((__aligned__(__VM_CACHELINE_SIZE))) |
347 | #define __usereg __attribute__((__regparm__(3))) | |
f754816e HP |
348 | #else |
349 | #define __cachealign | |
350 | #define __usereg | |
351 | #endif | |
352 | ||
984263bc MD |
353 | #ifdef __GNUC__ |
354 | #define __strong_reference(sym,aliassym) \ | |
355 | extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym))); | |
984263bc MD |
356 | #define __weak_reference(sym,alias) \ |
357 | __asm__(".weak " #alias); \ | |
358 | __asm__(".equ " #alias ", " #sym) | |
359 | #define __warn_references(sym,msg) \ | |
360 | __asm__(".section .gnu.warning." #sym); \ | |
361 | __asm__(".asciz \"" msg "\""); \ | |
362 | __asm__(".previous") | |
984263bc MD |
363 | #endif /* __GNUC__ */ |
364 | ||
aa8d5dcb | 365 | #if defined(__GNUC__) |
984263bc | 366 | #define __IDSTRING(name,string) __asm__(".ident\t\"" string "\"") |
984263bc MD |
367 | #endif |
368 | ||
369 | #ifndef __RCSID | |
370 | #define __RCSID(s) __IDSTRING(rcsid,s) | |
371 | #endif | |
372 | ||
984263bc MD |
373 | #ifndef __RCSID_SOURCE |
374 | #define __RCSID_SOURCE(s) __IDSTRING(rcsid_source,s) | |
375 | #endif | |
376 | ||
377 | #ifndef __COPYRIGHT | |
378 | #define __COPYRIGHT(s) __IDSTRING(copyright,s) | |
379 | #endif | |
380 | ||
8a59902d JS |
381 | #ifndef __DECONST |
382 | #define __DECONST(type, var) ((type)(uintptr_t)(const void *)(var)) | |
383 | #endif | |
384 | ||
385 | #ifndef __DEVOLATILE | |
386 | #define __DEVOLATILE(type, var) ((type)(uintptr_t)(volatile void *)(var)) | |
387 | #endif | |
388 | ||
389 | #ifndef __DEQUALIFY | |
390 | #define __DEQUALIFY(type, var) ((type)(uintptr_t)(const volatile void *)(var)) | |
391 | #endif | |
392 | ||
984263bc MD |
393 | /*- |
394 | * The following definitions are an extension of the behavior originally | |
395 | * implemented in <sys/_posix.h>, but with a different level of granularity. | |
396 | * POSIX.1 requires that the macros we test be defined before any standard | |
397 | * header file is included. | |
398 | * | |
399 | * Here's a quick run-down of the versions: | |
400 | * defined(_POSIX_SOURCE) 1003.1-1988 | |
401 | * _POSIX_C_SOURCE == 1 1003.1-1990 | |
402 | * _POSIX_C_SOURCE == 2 1003.2-1992 C Language Binding Option | |
403 | * _POSIX_C_SOURCE == 199309 1003.1b-1993 | |
404 | * _POSIX_C_SOURCE == 199506 1003.1c-1995, 1003.1i-1995, | |
405 | * and the omnibus ISO/IEC 9945-1: 1996 | |
406 | * _POSIX_C_SOURCE == 200112 1003.1-2001 | |
ae2ee8ee | 407 | * _POSIX_C_SOURCE == 200809 1003.1-2008 |
984263bc MD |
408 | * |
409 | * In addition, the X/Open Portability Guide, which is now the Single UNIX | |
410 | * Specification, defines a feature-test macro which indicates the version of | |
411 | * that specification, and which subsumes _POSIX_C_SOURCE. | |
412 | * | |
413 | * Our macros begin with two underscores to avoid namespace screwage. | |
414 | */ | |
415 | ||
3c00e9c1 JS |
416 | /* |
417 | * If no special macro was specified, make the DragonFly extensions | |
418 | * available. Also make them available when requested so. | |
419 | */ | |
420 | #if (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) && \ | |
421 | !defined(_ANSI_SOURCE) && !defined(_C99_SOURCE)) || \ | |
422 | defined(_DRAGONFLY_SOURCE) || defined(_NETBSD_SOURCE) | |
423 | #define __DF_VISIBLE 1 | |
424 | #else | |
425 | #define __DF_VISIBLE 0 | |
426 | #endif | |
427 | ||
984263bc | 428 | /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */ |
2c292fb2 | 429 | #if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE - 0) == 1 |
984263bc MD |
430 | #undef _POSIX_C_SOURCE /* Probably illegal, but beyond caring now. */ |
431 | #define _POSIX_C_SOURCE 199009 | |
432 | #endif | |
433 | ||
434 | /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */ | |
2c292fb2 | 435 | #if defined(_POSIX_C_SOURCE) && (_POSIX_C_SOURCE - 0) == 2 |
984263bc MD |
436 | #undef _POSIX_C_SOURCE |
437 | #define _POSIX_C_SOURCE 199209 | |
438 | #endif | |
439 | ||
440 | /* Deal with various X/Open Portability Guides and Single UNIX Spec. */ | |
441 | #ifdef _XOPEN_SOURCE | |
ae2ee8ee SW |
442 | #if _XOPEN_SOURCE - 0 >= 700 |
443 | #define __XSI_VISIBLE 700 | |
444 | #undef _POSIX_C_SOURCE | |
445 | #define _POSIX_C_SOURCE 200809 | |
446 | #elif _XOPEN_SOURCE - 0 >= 600 | |
984263bc MD |
447 | #define __XSI_VISIBLE 600 |
448 | #undef _POSIX_C_SOURCE | |
449 | #define _POSIX_C_SOURCE 200112 | |
450 | #elif _XOPEN_SOURCE - 0 >= 500 | |
451 | #define __XSI_VISIBLE 500 | |
452 | #undef _POSIX_C_SOURCE | |
453 | #define _POSIX_C_SOURCE 199506 | |
454 | #endif | |
455 | #endif | |
456 | ||
457 | /* | |
458 | * Deal with all versions of POSIX. The ordering relative to the tests above is | |
459 | * important. | |
460 | */ | |
461 | #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) | |
462 | #define _POSIX_C_SOURCE 198808 | |
463 | #endif | |
464 | #ifdef _POSIX_C_SOURCE | |
ae2ee8ee SW |
465 | #if (_POSIX_C_SOURCE - 0) >= 200809 |
466 | #define __POSIX_VISIBLE 200809 | |
467 | #define __ISO_C_VISIBLE 1999 | |
468 | #elif (_POSIX_C_SOURCE - 0) >= 200112 | |
984263bc MD |
469 | #define __POSIX_VISIBLE 200112 |
470 | #define __ISO_C_VISIBLE 1999 | |
2c292fb2 | 471 | #elif (_POSIX_C_SOURCE - 0) >= 199506 |
984263bc MD |
472 | #define __POSIX_VISIBLE 199506 |
473 | #define __ISO_C_VISIBLE 1990 | |
2c292fb2 | 474 | #elif (_POSIX_C_SOURCE - 0) >= 199309 |
984263bc MD |
475 | #define __POSIX_VISIBLE 199309 |
476 | #define __ISO_C_VISIBLE 1990 | |
2c292fb2 | 477 | #elif (_POSIX_C_SOURCE - 0) >= 199209 |
984263bc MD |
478 | #define __POSIX_VISIBLE 199209 |
479 | #define __ISO_C_VISIBLE 1990 | |
2c292fb2 | 480 | #elif (_POSIX_C_SOURCE - 0) >= 199009 |
984263bc MD |
481 | #define __POSIX_VISIBLE 199009 |
482 | #define __ISO_C_VISIBLE 1990 | |
483 | #else | |
484 | #define __POSIX_VISIBLE 198808 | |
485 | #define __ISO_C_VISIBLE 0 | |
486 | #endif /* _POSIX_C_SOURCE */ | |
487 | #else | |
488 | /*- | |
489 | * Deal with _ANSI_SOURCE: | |
490 | * If it is defined, and no other compilation environment is explicitly | |
491 | * requested, then define our internal feature-test macros to zero. This | |
492 | * makes no difference to the preprocessor (undefined symbols in preprocessing | |
493 | * expressions are defined to have value zero), but makes it more convenient for | |
494 | * a test program to print out the values. | |
495 | * | |
496 | * If a program mistakenly defines _ANSI_SOURCE and some other macro such as | |
497 | * _POSIX_C_SOURCE, we will assume that it wants the broader compilation | |
498 | * environment (and in fact we will never get here). | |
499 | */ | |
500 | #ifdef _ANSI_SOURCE /* Hide almost everything. */ | |
501 | #define __POSIX_VISIBLE 0 | |
502 | #define __XSI_VISIBLE 0 | |
503 | #define __BSD_VISIBLE 0 | |
504 | #define __ISO_C_VISIBLE 1990 | |
3d28a533 JS |
505 | #elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */ |
506 | #define __POSIX_VISIBLE 0 | |
507 | #define __XSI_VISIBLE 0 | |
508 | #define __BSD_VISIBLE 0 | |
509 | #define __ISO_C_VISIBLE 1999 | |
984263bc MD |
510 | #else /* Default environment: show everything. */ |
511 | #define __POSIX_VISIBLE 200112 | |
512 | #define __XSI_VISIBLE 600 | |
513 | #define __BSD_VISIBLE 1 | |
514 | #define __ISO_C_VISIBLE 1999 | |
515 | #endif | |
516 | #endif | |
517 | ||
c358eb24 JM |
518 | /* |
519 | * GLOBL macro exists to preserve __start_set_* and __stop_set_* sections | |
520 | * of kernel modules which are discarded from binutils 2.17.50+ otherwise. | |
521 | */ | |
522 | ||
523 | #define __GLOBL1(sym) __asm__(".globl " #sym) | |
524 | #define __GLOBL(sym) __GLOBL1(sym) | |
525 | ||
984263bc | 526 | #endif /* !_SYS_CDEFS_H_ */ |