[apple/xnu.git] / bsd / sys / cdefs.h

/*
 * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/* Copyright 1995 NeXT Computer, Inc. All rights reserved. */
/*
 * 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
 */

#ifndef	_CDEFS_H_
#define	_CDEFS_H_

#if defined(__cplusplus)
#define	__BEGIN_DECLS	extern "C" {
#define	__END_DECLS	}
#else
#define	__BEGIN_DECLS
#define	__END_DECLS
#endif

/*
 * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
 * in between its arguments.  __CONCAT can also concatenate double-quoted
 * strings produced by the __STRING macro, but this only works with ANSI C.
 */
#if defined(__STDC__) || defined(__cplusplus)
#define	__P(protos)	protos		/* full-blown ANSI C */
#define	__CONCAT(x,y)	x ## y
#define	__STRING(x)	#x

#define	__const		const		/* define reserved names to standard */
#define	__signed	signed
#define	__volatile	volatile
#if defined(__cplusplus)
#define	__inline	inline		/* convert to C++ keyword */
#else
#ifndef __GNUC__
#define	__inline			/* delete GCC keyword */
#endif /* !__GNUC__ */
#endif /* !__cplusplus */

#else	/* !(__STDC__ || __cplusplus) */
#define	__P(protos)	()		/* traditional C preprocessor */
#define	__CONCAT(x,y)	x/**/y
#define	__STRING(x)	"x"

#ifndef __GNUC__
#define	__const				/* delete pseudo-ANSI C keywords */
#define	__inline
#define	__signed
#define	__volatile
#endif	/* !__GNUC__ */

/*
 * In non-ANSI C environments, new programs will want ANSI-only C keywords
 * deleted from the program and old programs will want them left alone.
 * When using a compiler other than gcc, programs using the ANSI C keywords
 * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
 * When using "gcc -traditional", we assume that this is the intent; if
 * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
 */
#ifndef	NO_ANSI_KEYWORDS
#define	const		__const			/* convert ANSI C keywords */
#define	inline		__inline
#define	signed		__signed
#define	volatile	__volatile
#endif /* !NO_ANSI_KEYWORDS */
#endif /* !(__STDC__ || __cplusplus) */

/*
 * GCC1 and some versions of GCC2 declare dead (non-returning) and
 * pure (no side effects) functions using "volatile" and "const";
 * unfortunately, these then cause warnings under "-ansi -pedantic".
 * GCC2 uses a new, peculiar __attribute__((attrs)) style.  All of
 * these work for GNU C++ (modulo a slight glitch in the C++ grammar
 * in the distribution version of 2.5.5).
 */
#if defined(__MWERKS__) && (__MWERKS__ > 0x2400)
	/* newer Metrowerks compilers support __attribute__() */
#elif __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 5
#define	__dead2		__attribute__((__noreturn__))
#define	__pure2		__attribute__((__const__))
#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7
#define	__unused	/* no attribute */
#else
#define	__unused	__attribute__((__unused__))
#endif
#else
#define	__attribute__(x)	/* delete __attribute__ if non-gcc or gcc1 */
#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
/* __dead and __pure are depreciated.  Use __dead2 and __pure2 instead */
#define	__dead		__volatile
#define	__pure		__const
#endif
#endif

/* Delete pseudo-keywords wherever they are not available or needed. */
#ifndef __dead
#define	__dead
#define	__pure
#endif
#ifndef __dead2
#define	__dead2
#define	__pure2
#define	__unused
#endif

/*
 * GCC 2.95 provides `__restrict' as an extension to C90 to support the
 * C99-specific `restrict' type qualifier.  We happen to use `__restrict' as
 * a way to define the `restrict' type qualifier without disturbing older
 * software that is unaware of C99 keywords.
 */
#if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
#if __STDC_VERSION__ < 199901
#define __restrict
#else
#define __restrict	restrict
#endif
#endif

/*
 * Compiler-dependent macros to declare that functions take printf-like
 * or scanf-like arguments.  They are null except for versions of gcc
 * that are known to support the features properly.  Functions declared
 * with these attributes will cause compilation warnings if there is a
 * mismatch between the format string and subsequent function parameter
 * types.
 */
#if __GNUC__ > 2 || __GNUC__ == 2 && __GNUC_MINOR__ >= 7
#define __printflike(fmtarg, firstvararg) \
		__attribute__((__format__ (__printf__, fmtarg, firstvararg)))
#define __scanflike(fmtarg, firstvararg) \
		__attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
#else
#define __printflike(fmtarg, firstvararg)
#define __scanflike(fmtarg, firstvararg)
#endif

#define __IDSTRING(name,string) static const char name[] __unused = string

#ifndef __COPYRIGHT
#define __COPYRIGHT(s) __IDSTRING(copyright,s)
#endif

#ifndef __RCSID
#define __RCSID(s) __IDSTRING(rcsid,s)
#endif

#ifndef __SCCSID
#define __SCCSID(s) __IDSTRING(sccsid,s)
#endif

#ifndef __PROJECT_VERSION
#define __PROJECT_VERSION(s) __IDSTRING(project_version,s)
#endif

/*
 * The __DARWIN_ALIAS macros is used to do symbol renaming, 
 * they allow old code to use the old symbol thus maintiang binary 
 * compatability while new code can use a new improved version of the 
 * same function.
 *
 * By default newly complied code will actually get the same symbols
 * that the old code did.  Defining any of _APPLE_C_SOURCE, _XOPEN_SOURCE,
 * or _POSIX_C_SOURCE will give you the new symbols.  Defining _XOPEN_SOURCE
 * or _POSIX_C_SOURCE also restricts the avilable symbols to a subset of
 * Apple's APIs.
 *
 * __DARWIN_ALIAS is used by itself if the function signature has not
 * changed, it is used along with a #ifdef check for __DARWIN_UNIX03
 * if the signature has changed.  Because the __LP64__ enviroment
 * only supports UNIX03 sementics it causes __DARWIN_UNIX03 to be
 * defined, but causes __DARWIN_ALIAS to do no symbol mangling.
 */

#if !defined(__DARWIN_UNIX03)
#if defined(_APPLE_C_SOURCE) || defined(_XOPEN_SOURCE) || defined(_POSIX_C_SOURCE) || defined(__LP64__)
#if defined(_NONSTD_SOURCE)
#error "Can't define both _NONSTD_SOURCE and any of _APPLE_C_SOURCE, _XOPEN_SOURCE, _POSIX_C_SOURCE, or __LP64__"
#endif /* _NONSTD_SOURCE */
#define __DARWIN_UNIX03	1
#elif defined(_NONSTD_SOURCE)
#define __DARWIN_UNIX03	0
#else /* default */
#define __DARWIN_UNIX03	0
#endif /* _APPLE_C_SOURCE || _XOPEN_SOURCE || _POSIX_C_SOURCE || __LP64__ */
#endif /* !__DARWIN_UNIX03 */

#if __DARWIN_UNIX03 && !defined(__LP64__)
#define __DARWIN_ALIAS(sym) __asm("_" __STRING(sym) "$UNIX2003")
#else
#define __DARWIN_ALIAS(sym)
#endif


/*
 * POSIX.1 requires that the macros we test be defined before any standard
 * header file is included.  This permits us to convert values for feature
 * testing, as necessary, using only _POSIX_C_SOURCE.
 *
 * Here's a quick run-down of the versions:
 *  defined(_POSIX_SOURCE)		1003.1-1988
 *  _POSIX_C_SOURCE == 1L		1003.1-1990
 *  _POSIX_C_SOURCE == 2L		1003.2-1992 C Language Binding Option
 *  _POSIX_C_SOURCE == 199309L		1003.1b-1993
 *  _POSIX_C_SOURCE == 199506L		1003.1c-1995, 1003.1i-1995,
 *					and the omnibus ISO/IEC 9945-1: 1996
 *  _POSIX_C_SOURCE == 200112L		1003.1-2001
 *
 * In addition, the X/Open Portability Guide, which is now the Single UNIX
 * Specification, defines a feature-test macro which indicates the version of
 * that specification, and which subsumes _POSIX_C_SOURCE.
 */

/* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */
#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L
#undef _POSIX_C_SOURCE
#define	_POSIX_C_SOURCE		199009L
#endif

/* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */
#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L
#undef _POSIX_C_SOURCE
#define	_POSIX_C_SOURCE		199209L
#endif

/* Deal with various X/Open Portability Guides and Single UNIX Spec. */
#ifdef _XOPEN_SOURCE
#if _XOPEN_SOURCE - 0L >= 600L
#undef _POSIX_C_SOURCE
#define	_POSIX_C_SOURCE		200112L
#elif _XOPEN_SOURCE - 0L >= 500L
#undef _POSIX_C_SOURCE
#define	_POSIX_C_SOURCE		199506L
#endif
#endif

/*
 * Deal with all versions of POSIX.  The ordering relative to the tests above is
 * important.
 */
#if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
#define _POSIX_C_SOURCE         198808L
#endif

/*
 * long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and
 * c99 still want long longs.  While not perfect, we allow long longs for
 * g++.
 */
#define	__DARWIN_NO_LONG_LONG	(defined(__STRICT_ANSI__) \
				&& (__STDC_VERSION__-0 < 199901L) \
				&& !defined(__GNUG__))

/*
 * Long double compatibility macro allow selecting variant symbols based
 * on the old (compatible) 64-bit long doubles, or the new 128-bit
 * long doubles.  This applies only to ppc; i386 already has long double
 * support, while ppc64 doesn't have any backwards history.
 */
#if defined(__ppc__)
#  if defined(__LDBL_MANT_DIG__) && defined(__DBL_MANT_DIG__) && \
	__LDBL_MANT_DIG__ > __DBL_MANT_DIG__
#    if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0 < 1040
#      define	__DARWIN_LDBL_COMPAT(x)	__asm("_" __STRING(x) "$LDBLStub")
#    else
#      define	__DARWIN_LDBL_COMPAT(x)	__asm("_" __STRING(x) "$LDBL128")
#    endif
#    define	__DARWIN_LDBL_COMPAT2(x) __asm("_" __STRING(x) "$LDBL128")
#    define	__DARWIN_LONG_DOUBLE_IS_DOUBLE	0
#  else
#   define	__DARWIN_LDBL_COMPAT(x) /* nothing */
#   define	__DARWIN_LDBL_COMPAT2(x) /* nothing */
#   define	__DARWIN_LONG_DOUBLE_IS_DOUBLE	1
#  endif
#elif defined(__i386__) || defined(__ppc64__)
#  define	__DARWIN_LDBL_COMPAT(x)	/* nothing */
#  define	__DARWIN_LDBL_COMPAT2(x) /* nothing */
#  define	__DARWIN_LONG_DOUBLE_IS_DOUBLE	0
#else
#  error Unknown architecture
#endif

/*
 * Structure alignment control macros.  These specify how certain
 * shared structures should be aligned.  Some may need backward
 * compatible legacy (POWER) alignment, while others may need
 * forward compatible (NATURAL) alignment.
 */
#if !defined(__DARWIN_ALIGN_POWER)
#if defined(__ppc64__)
#define __DARWIN_ALIGN_POWER 1
#else
#define __DARWIN_ALIGN_POWER 0
#endif
#endif /* __DARWIN_ALIGN_POWER */

#if !defined(__DARWIN_ALIGN_NATURAL)
#if defined(__ppc__) && defined(KERNEL)
#define __DARWIN_ALIGN_NATURAL 1
#else
#define __DARWIN_ALIGN_NATURAL 0
#endif
#endif /* __DARWIN_ALIGN_NATURAL */

#endif /* !_CDEFS_H_ */
Commit	Line	Data
1c79356b	1	/*
91447636	2	* Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
ff6e181a A	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. Please obtain a copy of the License at
	10	* http://www.opensource.apple.com/apsl/ and read it before using this
	11	* file.
1c79356b	12	*
ff6e181a A	13	* The Original Code and all software distributed under the License are
ff6e181a A	14	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
1c79356b A	15	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
1c79356b A	16	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
ff6e181a A	17	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	18	* Please see the License for the specific language governing rights and
	19	* limitations under the License.
1c79356b A	20	*
	21	* @APPLE_LICENSE_HEADER_END@
	22	*/
	23	/* Copyright 1995 NeXT Computer, Inc. All rights reserved. */
	24	/*
	25	* Copyright (c) 1991, 1993
	26	* The Regents of the University of California. All rights reserved.
	27	*
	28	* This code is derived from software contributed to Berkeley by
	29	* Berkeley Software Design, Inc.
	30	*
	31	* Redistribution and use in source and binary forms, with or without
	32	* modification, are permitted provided that the following conditions
	33	* are met:
	34	* 1. Redistributions of source code must retain the above copyright
	35	* notice, this list of conditions and the following disclaimer.
	36	* 2. Redistributions in binary form must reproduce the above copyright
	37	* notice, this list of conditions and the following disclaimer in the
	38	* documentation and/or other materials provided with the distribution.
	39	* 3. All advertising materials mentioning features or use of this software
	40	* must display the following acknowledgement:
	41	* This product includes software developed by the University of
	42	* California, Berkeley and its contributors.
	43	* 4. Neither the name of the University nor the names of its contributors
	44	* may be used to endorse or promote products derived from this software
	45	* without specific prior written permission.
	46	*
	47	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	48	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	49	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	50	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	51	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	52	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	53	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	54	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	55	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	56	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	57	* SUCH DAMAGE.
	58	*
	59	* @(#)cdefs.h 8.8 (Berkeley) 1/9/95
	60	*/
	61
	62	#ifndef _CDEFS_H_
	63	#define _CDEFS_H_
	64
	65	#if defined(__cplusplus)
	66	#define __BEGIN_DECLS extern "C" {
	67	#define __END_DECLS }
	68	#else
	69	#define __BEGIN_DECLS
	70	#define __END_DECLS
	71	#endif
	72
	73	/*
	74	* The __CONCAT macro is used to concatenate parts of symbol names, e.g.
	75	* with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
	76	* The __CONCAT macro is a bit tricky -- make sure you don't put spaces
	77	* in between its arguments. __CONCAT can also concatenate double-quoted
	78	* strings produced by the __STRING macro, but this only works with ANSI C.
	79	*/
	80	#if defined(__STDC__) \|\| defined(__cplusplus)
	81	#define __P(protos) protos /* full-blown ANSI C */
	82	#define __CONCAT(x,y) x ## y
	83	#define __STRING(x) #x
84
85	#define __const const /* define reserved names to standard */
86	#define __signed signed
87	#define __volatile volatile
88	#if defined(__cplusplus)
89	#define __inline inline /* convert to C++ keyword */
90	#else
91	#ifndef __GNUC__
92	#define __inline /* delete GCC keyword */
93	#endif /* !__GNUC__ */
94	#endif /* !__cplusplus */
95
96	#else /* !(__STDC__ \|\| __cplusplus) */
97	#define __P(protos) () /* traditional C preprocessor */
98	#define __CONCAT(x,y) x/**/y
99	#define __STRING(x) "x"
100
101	#ifndef __GNUC__
102	#define __const /* delete pseudo-ANSI C keywords */
103	#define __inline
104	#define __signed
105	#define __volatile
106	#endif /* !__GNUC__ */
107
108	/*
109	* In non-ANSI C environments, new programs will want ANSI-only C keywords
110	* deleted from the program and old programs will want them left alone.
111	* When using a compiler other than gcc, programs using the ANSI C keywords
112	* const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
113	* When using "gcc -traditional", we assume that this is the intent; if
114	* __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
115	*/
116	#ifndef NO_ANSI_KEYWORDS
117	#define const __const /* convert ANSI C keywords */
118	#define inline __inline
119	#define signed __signed
120	#define volatile __volatile
121	#endif /* !NO_ANSI_KEYWORDS */
122	#endif /* !(__STDC__ \|\| __cplusplus) */
123
124	/*
125	* GCC1 and some versions of GCC2 declare dead (non-returning) and
126	* pure (no side effects) functions using "volatile" and "const";
127	* unfortunately, these then cause warnings under "-ansi -pedantic".
128	* GCC2 uses a new, peculiar __attribute__((attrs)) style. All of
129	* these work for GNU C++ (modulo a slight glitch in the C++ grammar
130	* in the distribution version of 2.5.5).
131	*/
0b4e3aa0 A	132	#if defined(__MWERKS__) && (__MWERKS__ > 0x2400)
0b4e3aa0 A	133	/* newer Metrowerks compilers support __attribute__() */
55e303ae A	134	#elif __GNUC__ > 2 \|\| __GNUC__ == 2 && __GNUC_MINOR__ >= 5
	135	#define __dead2 __attribute__((__noreturn__))
	136	#define __pure2 __attribute__((__const__))
	137	#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7
	138	#define __unused /* no attribute */
	139	#else
	140	#define __unused __attribute__((__unused__))
	141	#endif
	142	#else
1c79356b A	143	#define __attribute__(x) /* delete __attribute__ if non-gcc or gcc1 */
1c79356b A	144	#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
55e303ae	145	/* __dead and __pure are depreciated. Use __dead2 and __pure2 instead */
1c79356b A	146	#define __dead __volatile
	147	#define __pure __const
	148	#endif
	149	#endif
	150
	151	/* Delete pseudo-keywords wherever they are not available or needed. */
	152	#ifndef __dead
	153	#define __dead
	154	#define __pure
	155	#endif
55e303ae A	156	#ifndef __dead2
	157	#define __dead2
	158	#define __pure2
	159	#define __unused
	160	#endif
1c79356b	161
91447636 A	162	/*
	163	* GCC 2.95 provides `__restrict' as an extension to C90 to support the
	164	* C99-specific `restrict' type qualifier. We happen to use `__restrict' as
	165	* a way to define the `restrict' type qualifier without disturbing older
	166	* software that is unaware of C99 keywords.
	167	*/
	168	#if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
	169	#if __STDC_VERSION__ < 199901
	170	#define __restrict
	171	#else
	172	#define __restrict restrict
	173	#endif
	174	#endif
	175
	176	/*
	177	* Compiler-dependent macros to declare that functions take printf-like
	178	* or scanf-like arguments. They are null except for versions of gcc
	179	* that are known to support the features properly. Functions declared
	180	* with these attributes will cause compilation warnings if there is a
	181	* mismatch between the format string and subsequent function parameter
	182	* types.
	183	*/
	184	#if __GNUC__ > 2 \|\| __GNUC__ == 2 && __GNUC_MINOR__ >= 7
	185	#define __printflike(fmtarg, firstvararg) \
	186	__attribute__((__format__ (__printf__, fmtarg, firstvararg)))
	187	#define __scanflike(fmtarg, firstvararg) \
	188	__attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
	189	#else
	190	#define __printflike(fmtarg, firstvararg)
	191	#define __scanflike(fmtarg, firstvararg)
	192	#endif
	193
55e303ae	194	#define __IDSTRING(name,string) static const char name[] __unused = string
1c79356b A	195
	196	#ifndef __COPYRIGHT
	197	#define __COPYRIGHT(s) __IDSTRING(copyright,s)
	198	#endif
	199
	200	#ifndef __RCSID
	201	#define __RCSID(s) __IDSTRING(rcsid,s)
	202	#endif
	203
	204	#ifndef __SCCSID
	205	#define __SCCSID(s) __IDSTRING(sccsid,s)
	206	#endif
	207
	208	#ifndef __PROJECT_VERSION
	209	#define __PROJECT_VERSION(s) __IDSTRING(project_version,s)
	210	#endif
	211
91447636 A	212	/*
	213	* The __DARWIN_ALIAS macros is used to do symbol renaming,
	214	* they allow old code to use the old symbol thus maintiang binary
	215	* compatability while new code can use a new improved version of the
	216	* same function.
	217	*
	218	* By default newly complied code will actually get the same symbols
	219	* that the old code did. Defining any of _APPLE_C_SOURCE, _XOPEN_SOURCE,
	220	* or _POSIX_C_SOURCE will give you the new symbols. Defining _XOPEN_SOURCE
	221	* or _POSIX_C_SOURCE also restricts the avilable symbols to a subset of
	222	* Apple's APIs.
	223	*
	224	* __DARWIN_ALIAS is used by itself if the function signature has not
	225	* changed, it is used along with a #ifdef check for __DARWIN_UNIX03
	226	* if the signature has changed. Because the __LP64__ enviroment
	227	* only supports UNIX03 sementics it causes __DARWIN_UNIX03 to be
	228	* defined, but causes __DARWIN_ALIAS to do no symbol mangling.
	229	*/
	230
	231	#if !defined(__DARWIN_UNIX03)
	232	#if defined(_APPLE_C_SOURCE) \|\| defined(_XOPEN_SOURCE) \|\| defined(_POSIX_C_SOURCE) \|\| defined(__LP64__)
	233	#if defined(_NONSTD_SOURCE)
	234	#error "Can't define both _NONSTD_SOURCE and any of _APPLE_C_SOURCE, _XOPEN_SOURCE, _POSIX_C_SOURCE, or __LP64__"
	235	#endif /* _NONSTD_SOURCE */
	236	#define __DARWIN_UNIX03 1
	237	#elif defined(_NONSTD_SOURCE)
	238	#define __DARWIN_UNIX03 0
	239	#else /* default */
	240	#define __DARWIN_UNIX03 0
	241	#endif /* _APPLE_C_SOURCE \|\| _XOPEN_SOURCE \|\| _POSIX_C_SOURCE \|\| __LP64__ */
	242	#endif /* !__DARWIN_UNIX03 */
	243
	244	#if __DARWIN_UNIX03 && !defined(__LP64__)
	245	#define __DARWIN_ALIAS(sym) __asm("_" __STRING(sym) "$UNIX2003")
	246	#else
	247	#define __DARWIN_ALIAS(sym)
	248	#endif
	249
	250
	251	/*
	252	* POSIX.1 requires that the macros we test be defined before any standard
	253	* header file is included. This permits us to convert values for feature
	254	* testing, as necessary, using only _POSIX_C_SOURCE.
	255	*
	256	* Here's a quick run-down of the versions:
	257	* defined(_POSIX_SOURCE) 1003.1-1988
	258	* _POSIX_C_SOURCE == 1L 1003.1-1990
	259	* _POSIX_C_SOURCE == 2L 1003.2-1992 C Language Binding Option
	260	* _POSIX_C_SOURCE == 199309L 1003.1b-1993
	261	* _POSIX_C_SOURCE == 199506L 1003.1c-1995, 1003.1i-1995,
	262	* and the omnibus ISO/IEC 9945-1: 1996
	263	* _POSIX_C_SOURCE == 200112L 1003.1-2001
	264	*
	265	* In addition, the X/Open Portability Guide, which is now the Single UNIX
	266	* Specification, defines a feature-test macro which indicates the version of
	267	* that specification, and which subsumes _POSIX_C_SOURCE.
	268	*/
	269
	270	/* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1L. */
	271	#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1L
	272	#undef _POSIX_C_SOURCE
	273	#define _POSIX_C_SOURCE 199009L
	274	#endif
	275
276	/* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2L. */
277	#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2L
278	#undef _POSIX_C_SOURCE
279	#define _POSIX_C_SOURCE 199209L
280	#endif
281
282	/* Deal with various X/Open Portability Guides and Single UNIX Spec. */
283	#ifdef _XOPEN_SOURCE
284	#if _XOPEN_SOURCE - 0L >= 600L
285	#undef _POSIX_C_SOURCE
286	#define _POSIX_C_SOURCE 200112L
287	#elif _XOPEN_SOURCE - 0L >= 500L
288	#undef _POSIX_C_SOURCE
289	#define _POSIX_C_SOURCE 199506L
290	#endif
291	#endif
292
293	/*
294	* Deal with all versions of POSIX. The ordering relative to the tests above is
295	* important.
296	*/
297	#if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
298	#define _POSIX_C_SOURCE 198808L
299	#endif
300
301	/*
302	* long long is not supported in c89 (__STRICT_ANSI__), but g++ -ansi and
303	* c99 still want long longs. While not perfect, we allow long longs for
304	* g++.
305	*/
306	#define __DARWIN_NO_LONG_LONG (defined(__STRICT_ANSI__) \
307	&& (__STDC_VERSION__-0 < 199901L) \
308	&& !defined(__GNUG__))
309
310	/*
311	* Long double compatibility macro allow selecting variant symbols based
312	* on the old (compatible) 64-bit long doubles, or the new 128-bit
313	* long doubles. This applies only to ppc; i386 already has long double
314	* support, while ppc64 doesn't have any backwards history.
315	*/
316	#if defined(__ppc__)
317	# if defined(__LDBL_MANT_DIG__) && defined(__DBL_MANT_DIG__) && \
318	__LDBL_MANT_DIG__ > __DBL_MANT_DIG__
319	# if __ENVIRONMENT_MAC_OS_X_VERSION_MIN_REQUIRED__-0 < 1040
320	# define __DARWIN_LDBL_COMPAT(x) __asm("_" __STRING(x) "$LDBLStub")
321	# else
322	# define __DARWIN_LDBL_COMPAT(x) __asm("_" __STRING(x) "$LDBL128")
323	# endif
324	# define __DARWIN_LDBL_COMPAT2(x) __asm("_" __STRING(x) "$LDBL128")
325	# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 0
326	# else
327	# define __DARWIN_LDBL_COMPAT(x) /* nothing */
328	# define __DARWIN_LDBL_COMPAT2(x) /* nothing */
329	# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 1
330	# endif
331	#elif defined(__i386__) \|\| defined(__ppc64__)
332	# define __DARWIN_LDBL_COMPAT(x) /* nothing */
333	# define __DARWIN_LDBL_COMPAT2(x) /* nothing */
334	# define __DARWIN_LONG_DOUBLE_IS_DOUBLE 0
335	#else
336	# error Unknown architecture
337	#endif
338
339	/*
340	* Structure alignment control macros. These specify how certain
341	* shared structures should be aligned. Some may need backward
342	* compatible legacy (POWER) alignment, while others may need
343	* forward compatible (NATURAL) alignment.
344	*/
345	#if !defined(__DARWIN_ALIGN_POWER)
346	#if defined(__ppc64__)
347	#define __DARWIN_ALIGN_POWER 1
348	#else
349	#define __DARWIN_ALIGN_POWER 0
350	#endif
351	#endif /* __DARWIN_ALIGN_POWER */
352
353	#if !defined(__DARWIN_ALIGN_NATURAL)
354	#if defined(__ppc__) && defined(KERNEL)
355	#define __DARWIN_ALIGN_NATURAL 1
356	#else
357	#define __DARWIN_ALIGN_NATURAL 0
358	#endif
359	#endif /* __DARWIN_ALIGN_NATURAL */
360
1c79356b	361	#endif /* !_CDEFS_H_ */