[apple/libc.git] / fbsdcompat / sys / cdefs.h

/*
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Berkeley Software Design, Inc.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)cdefs.h	8.8 (Berkeley) 1/9/95
 * $FreeBSD: /repoman/r/ncvs/src/sys/sys/cdefs.h,v 1.68 2002/10/21 20:50:30 mike Exp $
 */

#ifndef	_SYS_CDEFS_H_

/*
 * Compiler-dependent macros to help declare dead (non-returning) and
 * pure (no side effects) functions, and unused variables.  They are
 * null except for versions of gcc that are known to support the features
 * properly (old versions of gcc-2 supported the dead and pure features
 * in a different (wrong) way).  If we do not provide an implementation
 * for a given compiler, let the compile fail if it is told to use
 * a feature that we cannot live without.
 */
#ifdef lint
#define	__packed
#define	__aligned(x)
#define	__section(x)
#else
#define	__packed	__attribute__((__packed__))
#define	__aligned(x)	__attribute__((__aligned__(x)))
#define	__section(x)	__attribute__((__section__(x)))
#endif

#if !defined(__STRICT_ANSI__) || __STDC_VERSION__ >= 199901
#define	__LONG_LONG_SUPPORTED
#endif

/*
 * We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h>
 * require it.
 */
#define	__offsetof(type, field)	((size_t)(&((type *)0)->field))

#define	__strong_reference(sym,aliassym)	\
	extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)));
#define	__weak_reference(sym,alias)
#define	__warn_references(sym,msg)

#ifndef	__RCSID_SOURCE
#ifndef	NO__RCSID_SOURCE
#define	__RCSID_SOURCE(s)	__IDSTRING(__CONCAT(__rcsid_source_,__LINE__),s)
#else
#define	__RCSID_SOURCE(s)
#endif
#endif

#ifndef	__DECONST
#define	__DECONST(type, var)	((type)(uintptr_t)(const void *)(var))
#endif

#ifndef	__DEVOLATILE
#define	__DEVOLATILE(type, var)	((type)(uintptr_t)(volatile void *)(var))
#endif

#ifndef	__DEQUALIFY
#define	__DEQUALIFY(type, var)	((type)(uintptr_t)(const volatile void *)(var))
#endif

/*
 * Now include the Apple version of sys/cdefs.h
 */

#include_next <sys/cdefs.h>

/*
 * Use FreeBSD version of __CONCAT
 */
#if defined(__STDC__) || defined(__cplusplus)
#undef __CONCAT1
#undef __CONCAT
#define __CONCAT1(x,y)	x ## y
#define __CONCAT(x,y)	__CONCAT1(x,y)
#endif

/*
 * Deal with all versions of POSIX.  The ordering relative to the tests above is
 * important.
 */
#ifdef _POSIX_C_SOURCE
#if _POSIX_C_SOURCE >= 200112
#define	__POSIX_VISIBLE		200112
#define	__ISO_C_VISIBLE		1999
#elif _POSIX_C_SOURCE >= 199506
#define	__POSIX_VISIBLE		199506
#define	__ISO_C_VISIBLE		1990
#elif _POSIX_C_SOURCE >= 199309
#define	__POSIX_VISIBLE		199309
#define	__ISO_C_VISIBLE		1990
#elif _POSIX_C_SOURCE >= 199209
#define	__POSIX_VISIBLE		199209
#define	__ISO_C_VISIBLE		1990
#elif _POSIX_C_SOURCE >= 199009
#define	__POSIX_VISIBLE		199009
#define	__ISO_C_VISIBLE		1990
#else
#define	__POSIX_VISIBLE		198808
#define	__ISO_C_VISIBLE		0
#endif /* _POSIX_C_SOURCE */
#else
/*-
 * Deal with _ANSI_SOURCE:
 * If it is defined, and no other compilation environment is explicitly
 * requested, then define our internal feature-test macros to zero.  This
 * makes no difference to the preprocessor (undefined symbols in preprocessing
 * expressions are defined to have value zero), but makes it more convenient for
 * a test program to print out the values.
 *
 * If a program mistakenly defines _ANSI_SOURCE and some other macro such as
 * _POSIX_C_SOURCE, we will assume that it wants the broader compilation
 * environment (and in fact we will never get here).
 */
#if defined(_ANSI_SOURCE)	/* Hide almost everything. */
#define	__POSIX_VISIBLE		0
#define	__XSI_VISIBLE		0
#define	__BSD_VISIBLE		0
#define	__ISO_C_VISIBLE		1990
#elif defined(_C99_SOURCE)	/* Localism to specify strict C99 env. */
#define	__POSIX_VISIBLE		0
#define	__XSI_VISIBLE		0
#define	__BSD_VISIBLE		0
#define	__ISO_C_VISIBLE		1999
#else				/* Default environment: show everything. */
#define	__POSIX_VISIBLE		200112
#define	__XSI_VISIBLE		600
#define	__BSD_VISIBLE		1
#define	__ISO_C_VISIBLE		1999
#endif
#endif

#endif /* !_SYS_CDEFS_H_ */
Commit	Line	Data
9385eb3d A	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: /repoman/r/ncvs/src/sys/sys/cdefs.h,v 1.68 2002/10/21 20:50:30 mike Exp $
	38	*/
	39
	40	#ifndef _SYS_CDEFS_H_
9385eb3d A	41
	42	/*
	43	* Compiler-dependent macros to help declare dead (non-returning) and
	44	* pure (no side effects) functions, and unused variables. They are
	45	* null except for versions of gcc that are known to support the features
	46	* properly (old versions of gcc-2 supported the dead and pure features
	47	* in a different (wrong) way). If we do not provide an implementation
	48	* for a given compiler, let the compile fail if it is told to use
	49	* a feature that we cannot live without.
	50	*/
	51	#ifdef lint
9385eb3d A	52	#define __packed
	53	#define __aligned(x)
	54	#define __section(x)
	55	#else
9385eb3d A	56	#define __packed __attribute__((__packed__))
	57	#define __aligned(x) __attribute__((__aligned__(x)))
	58	#define __section(x) __attribute__((__section__(x)))
	59	#endif
9385eb3d	60
ad3c9f2a	61	#if !defined(__STRICT_ANSI__) \|\| __STDC_VERSION__ >= 199901
9385eb3d A	62	#define __LONG_LONG_SUPPORTED
	63	#endif
	64
9385eb3d A	65	/*
	66	* We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h>
	67	* require it.
	68	*/
	69	#define __offsetof(type, field) ((size_t)(&((type *)0)->field))
	70
9385eb3d A	71	#define __strong_reference(sym,aliassym) \
9385eb3d A	72	extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)));
9385eb3d A	73	#define __weak_reference(sym,alias)
9385eb3d A	74	#define __warn_references(sym,msg)
9385eb3d A	75
	76	#ifndef __RCSID_SOURCE
	77	#ifndef NO__RCSID_SOURCE
	78	#define __RCSID_SOURCE(s) __IDSTRING(__CONCAT(__rcsid_source_,__LINE__),s)
	79	#else
	80	#define __RCSID_SOURCE(s)
	81	#endif
	82	#endif
	83
9385eb3d A	84	#ifndef __DECONST
	85	#define __DECONST(type, var) ((type)(uintptr_t)(const void *)(var))
	86	#endif
	87
	88	#ifndef __DEVOLATILE
	89	#define __DEVOLATILE(type, var) ((type)(uintptr_t)(volatile void *)(var))
	90	#endif
	91
	92	#ifndef __DEQUALIFY
	93	#define __DEQUALIFY(type, var) ((type)(uintptr_t)(const volatile void *)(var))
	94	#endif
	95
3d9156a7 A	96	/*
3d9156a7 A	97	* Now include the Apple version of sys/cdefs.h
9385eb3d A	98	*/
9385eb3d A	99
3d9156a7	100	#include_next <sys/cdefs.h>
9385eb3d	101
3d9156a7 A	102	/*
	103	* Use FreeBSD version of __CONCAT
	104	*/
	105	#if defined(__STDC__) \|\| defined(__cplusplus)
	106	#undef __CONCAT1
	107	#undef __CONCAT
	108	#define __CONCAT1(x,y) x ## y
	109	#define __CONCAT(x,y) __CONCAT1(x,y)
9385eb3d A	110	#endif
	111
	112	/*
	113	* Deal with all versions of POSIX. The ordering relative to the tests above is
	114	* important.
	115	*/
9385eb3d A	116	#ifdef _POSIX_C_SOURCE
	117	#if _POSIX_C_SOURCE >= 200112
	118	#define __POSIX_VISIBLE 200112
	119	#define __ISO_C_VISIBLE 1999
	120	#elif _POSIX_C_SOURCE >= 199506
	121	#define __POSIX_VISIBLE 199506
	122	#define __ISO_C_VISIBLE 1990
	123	#elif _POSIX_C_SOURCE >= 199309
	124	#define __POSIX_VISIBLE 199309
	125	#define __ISO_C_VISIBLE 1990
	126	#elif _POSIX_C_SOURCE >= 199209
	127	#define __POSIX_VISIBLE 199209
	128	#define __ISO_C_VISIBLE 1990
	129	#elif _POSIX_C_SOURCE >= 199009
	130	#define __POSIX_VISIBLE 199009
	131	#define __ISO_C_VISIBLE 1990
	132	#else
	133	#define __POSIX_VISIBLE 198808
	134	#define __ISO_C_VISIBLE 0
	135	#endif /* _POSIX_C_SOURCE */
	136	#else
	137	/*-
	138	* Deal with _ANSI_SOURCE:
	139	* If it is defined, and no other compilation environment is explicitly
	140	* requested, then define our internal feature-test macros to zero. This
	141	* makes no difference to the preprocessor (undefined symbols in preprocessing
	142	* expressions are defined to have value zero), but makes it more convenient for
	143	* a test program to print out the values.
	144	*
	145	* If a program mistakenly defines _ANSI_SOURCE and some other macro such as
	146	* _POSIX_C_SOURCE, we will assume that it wants the broader compilation
	147	* environment (and in fact we will never get here).
	148	*/
	149	#if defined(_ANSI_SOURCE) /* Hide almost everything. */
	150	#define __POSIX_VISIBLE 0
	151	#define __XSI_VISIBLE 0
	152	#define __BSD_VISIBLE 0
	153	#define __ISO_C_VISIBLE 1990
	154	#elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */
	155	#define __POSIX_VISIBLE 0
	156	#define __XSI_VISIBLE 0
	157	#define __BSD_VISIBLE 0
	158	#define __ISO_C_VISIBLE 1999
	159	#else /* Default environment: show everything. */
	160	#define __POSIX_VISIBLE 200112
	161	#define __XSI_VISIBLE 600
	162	#define __BSD_VISIBLE 1
	163	#define __ISO_C_VISIBLE 1999
	164	#endif
	165	#endif
	166
	167	#endif /* !_SYS_CDEFS_H_ */