sl@0: /*-
sl@0:  *
sl@0:  * Copyright (c) 1991, 1993
sl@0:  *	The Regents of the University of California.  All rights reserved.
sl@0:  *
sl@0:  * This code is derived from software contributed to Berkeley by
sl@0:  * Berkeley Software Design, Inc.
sl@0:  *
sl@0:  * Redistribution and use in source and binary forms, with or without
sl@0:  * modification, are permitted provided that the following conditions
sl@0:  * are met:
sl@0:  * 1. Redistributions of source code must retain the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer.
sl@0:  * 2. Redistributions in binary form must reproduce the above copyright
sl@0:  *    notice, this list of conditions and the following disclaimer in the
sl@0:  *    documentation and/or other materials provided with the distribution.
sl@0:  * 4. Neither the name of the University nor the names of its contributors
sl@0:  *    may be used to endorse or promote products derived from this software
sl@0:  *    without specific prior written permission.
sl@0:  *
sl@0:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
sl@0:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
sl@0:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
sl@0:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
sl@0:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
sl@0:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
sl@0:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
sl@0:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
sl@0:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
sl@0:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
sl@0:  * SUCH DAMAGE.
sl@0: * © Portions Copyright (c) 2005-2010 Nokia Corporation and/or its subsidiary(-ies). All rights reserved.
sl@0:  *	@(#)cdefs.h	8.8 (Berkeley) 1/9/95
sl@0:  * $FreeBSD: src/sys/sys/cdefs.h,v 1.88.2.1 2005/10/09 07:48:48 netchild Exp $
sl@0:  */
sl@0: 
sl@0: #ifndef	_SYS_CDEFS_H_
sl@0: #define	_SYS_CDEFS_H_
sl@0: 
sl@0: #ifdef __SYMBIAN32__
sl@0: #include <_ansi.h>
sl@0: #endif
sl@0: 
sl@0: #if defined(__cplusplus)
sl@0: #define	__BEGIN_DECLS	extern "C" {
sl@0: #define	__END_DECLS	}
sl@0: #else
sl@0: #define	__BEGIN_DECLS
sl@0: #define	__END_DECLS
sl@0: #endif
sl@0: 
sl@0: /*
sl@0:  * This code has been put in place to help reduce the addition of
sl@0:  * compiler specific defines in FreeBSD code.  It helps to aid in
sl@0:  * having a compiler-agnostic source tree.
sl@0:  */
sl@0: 
sl@0: #if defined(__GNUC__) || defined(__INTEL_COMPILER)
sl@0: 
sl@0: #if __GNUC__ >= 3 || defined(__INTEL_COMPILER)
sl@0: #define __GNUCLIKE_ASM 3
sl@0: #define __GNUCLIKE_MATH_BUILTIN_CONSTANTS
sl@0: #else
sl@0: #define __GNUCLIKE_ASM 2
sl@0: #endif
sl@0: #define __GNUCLIKE___TYPEOF 1
sl@0: #define __GNUCLIKE___OFFSETOF 1
sl@0: #define __GNUCLIKE___SECTION 1
sl@0: 
sl@0: #define __GNUCLIKE_ATTRIBUTE_MODE_DI 1
sl@0: 
sl@0: #ifndef __INTEL_COMPILER
sl@0: # define __GNUCLIKE_CTOR_SECTION_HANDLING 1
sl@0: #endif
sl@0: 
sl@0: #define __GNUCLIKE_BUILTIN_CONSTANT_P 1
sl@0: # if defined(__INTEL_COMPILER) && defined(__cplusplus) \
sl@0:     && __INTEL_COMPILER < 800
sl@0: #  undef __GNUCLIKE_BUILTIN_CONSTANT_P
sl@0: # endif
sl@0: 
sl@0: #if (__GNUC_MINOR__ > 95 || __GNUC__ >= 3) && !defined(__INTEL_COMPILER)
sl@0: # define __GNUCLIKE_BUILTIN_VARARGS 1
sl@0: # define __GNUCLIKE_BUILTIN_STDARG 1
sl@0: # define __GNUCLIKE_BUILTIN_VAALIST 1
sl@0: #endif
sl@0: 
sl@0: #if defined(__GNUC__)
sl@0: # define __GNUC_VA_LIST_COMPATIBILITY 1
sl@0: #endif
sl@0: 
sl@0: #ifndef __INTEL_COMPILER
sl@0: # define __GNUCLIKE_BUILTIN_NEXT_ARG 1
sl@0: # define __GNUCLIKE_MATH_BUILTIN_RELOPS
sl@0: #endif
sl@0: 
sl@0: #define __GNUCLIKE_BUILTIN_MEMCPY 1
sl@0: 
sl@0: /* XXX: if __GNUC__ >= 2: not tested everywhere originally, where replaced */
sl@0: #define __CC_SUPPORTS_INLINE 1
sl@0: #define __CC_SUPPORTS___INLINE 1
sl@0: #define __CC_SUPPORTS___INLINE__ 1
sl@0: 
sl@0: #define __CC_SUPPORTS___FUNC__ 1
sl@0: #define __CC_SUPPORTS_WARNING 1
sl@0: 
sl@0: #define __CC_SUPPORTS_VARADIC_XXX 1 /* see varargs.h */
sl@0: 
sl@0: #define __CC_SUPPORTS_DYNAMIC_ARRAY_INIT 1
sl@0: 
sl@0: /* XXX: sys/dev/mpt/mpilib/mpi_type.h uses it, someone should review it */
sl@0: #define __CC_INT_IS_32BIT 1
sl@0: 
sl@0: #endif /* __GNUC__ || __INTEL_COMPILER */
sl@0: 
sl@0: /*
sl@0:  * Macro to test if we're using a specific version of gcc or later.
sl@0:  */
sl@0: #if defined(__GNUC__) && !defined(__INTEL_COMPILER)
sl@0: #define	__GNUC_PREREQ__(ma, mi)	\
sl@0: 	(__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi))
sl@0: #else
sl@0: #define	__GNUC_PREREQ__(ma, mi)	0
sl@0: #endif
sl@0: 
sl@0: /*
sl@0:  * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
sl@0:  * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
sl@0:  * The __CONCAT macro is a bit tricky to use if it must work in non-ANSI
sl@0:  * mode -- there must be no spaces between its arguments, and for nested
sl@0:  * __CONCAT's, all the __CONCAT's must be at the left.  __CONCAT can also
sl@0:  * concatenate double-quoted strings produced by the __STRING macro, but
sl@0:  * this only works with ANSI C.
sl@0:  *
sl@0:  * __XSTRING is like __STRING, but it expands any macros in its argument
sl@0:  * first.  It is only available with ANSI C.
sl@0:  */
sl@0: #if defined(__STDC__) || defined(__cplusplus)
sl@0: #define	__P(protos)	protos		/* full-blown ANSI C */
sl@0: #define	__CONCAT1(x,y)	x ## y
sl@0: #define	__CONCAT(x,y)	__CONCAT1(x,y)
sl@0: #define	__STRING(x)	#x		/* stringify without expanding x */
sl@0: #define	__XSTRING(x)	__STRING(x)	/* expand x, then stringify */
sl@0: 
sl@0: #define	__const		const		/* define reserved names to standard */
sl@0: #define	__signed	signed
sl@0: #define	__volatile	volatile
sl@0: #if defined(__cplusplus)
sl@0: #define	__inline	inline		/* convert to C++ keyword */
sl@0: #else
sl@0: #if !(defined(__CC_SUPPORTS___INLINE))
sl@0: #define	__inline			/* delete GCC keyword */
sl@0: #endif /* ! __CC_SUPPORTS___INLINE */
sl@0: #endif /* !__cplusplus */
sl@0: 
sl@0: #else	/* !(__STDC__ || __cplusplus) */
sl@0: #define	__P(protos)	()		/* traditional C preprocessor */
sl@0: #define	__CONCAT(x,y)	x/**/y
sl@0: #define	__STRING(x)	"x"
sl@0: 
sl@0: #if !defined(__CC_SUPPORTS___INLINE)
sl@0: #define	__const				/* delete pseudo-ANSI C keywords */
sl@0: #define	__inline
sl@0: #define	__signed
sl@0: #define	__volatile
sl@0: /*
sl@0:  * In non-ANSI C environments, new programs will want ANSI-only C keywords
sl@0:  * deleted from the program and old programs will want them left alone.
sl@0:  * When using a compiler other than gcc, programs using the ANSI C keywords
sl@0:  * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
sl@0:  * When using "gcc -traditional", we assume that this is the intent; if
sl@0:  * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
sl@0:  */
sl@0: #ifndef	NO_ANSI_KEYWORDS
sl@0: #define	const				/* delete ANSI C keywords */
sl@0: #define	inline
sl@0: #define	signed
sl@0: #define	volatile
sl@0: #endif	/* !NO_ANSI_KEYWORDS */
sl@0: #endif	/* !__CC_SUPPORTS___INLINE */
sl@0: #endif	/* !(__STDC__ || __cplusplus) */
sl@0: 
sl@0: /*
sl@0:  * Compiler-dependent macros to help declare dead (non-returning) and
sl@0:  * pure (no side effects) functions, and unused variables.  They are
sl@0:  * null except for versions of gcc that are known to support the features
sl@0:  * properly (old versions of gcc-2 supported the dead and pure features
sl@0:  * in a different (wrong) way).  If we do not provide an implementation
sl@0:  * for a given compiler, let the compile fail if it is told to use
sl@0:  * a feature that we cannot live without.
sl@0:  */
sl@0: #ifdef lint
sl@0: #define	__dead2
sl@0: #define	__pure2
sl@0: #define	__unused
sl@0: #define	__packed
sl@0: #define	__aligned(x)
sl@0: #define	__section(x)
sl@0: #else
sl@0: #if !__GNUC_PREREQ__(2, 5) && !defined(__INTEL_COMPILER)
sl@0: #define	__dead2
sl@0: #define	__pure2
sl@0: #define	__unused
sl@0: #endif
sl@0: #if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7 && !defined(__INTEL_COMPILER)
sl@0: #define	__dead2		__attribute__((__noreturn__))
sl@0: #define	__pure2		__attribute__((__const__))
sl@0: #define	__unused
sl@0: /* XXX Find out what to do for __packed, __aligned and __section */
sl@0: #endif
sl@0: #if __GNUC_PREREQ__(2, 7)
sl@0: #define	__dead2		__attribute__((__noreturn__))
sl@0: #define	__pure2		__attribute__((__const__))
sl@0: #define	__unused	__attribute__((__unused__))
sl@0: #define	__used		__attribute__((__used__))
sl@0: #define	__packed	__attribute__((__packed__))
sl@0: #define	__aligned(x)	__attribute__((__aligned__(x)))
sl@0: #define	__section(x)	__attribute__((__section__(x)))
sl@0: #endif
sl@0: #if defined(__INTEL_COMPILER)
sl@0: #define __dead2		__attribute__((__noreturn__))
sl@0: #define __pure2		__attribute__((__const__))
sl@0: #define __unused	__attribute__((__unused__))
sl@0: #define __used		__attribute__((__used__))
sl@0: #define __packed	__attribute__((__packed__))
sl@0: #define __aligned(x)	__attribute__((__aligned__(x)))
sl@0: #define __section(x)	__attribute__((__section__(x)))
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #if __GNUC_PREREQ__(2, 96)
sl@0: #define	__pure		__attribute__((__pure__))
sl@0: #else
sl@0: #define	__pure
sl@0: #endif
sl@0: 
sl@0: #if __GNUC_PREREQ__(3, 1) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)
sl@0: #define	__always_inline	__attribute__((__always_inline__))
sl@0: #else
sl@0: #define	__always_inline
sl@0: #endif
sl@0: 
sl@0: #if __GNUC_PREREQ__(3, 3)
sl@0: #define __nonnull(x)	__attribute__((__nonnull__(x)))
sl@0: #else
sl@0: #define __nonnull(x)
sl@0: #endif
sl@0: 
sl@0: /* XXX: should use `#if __STDC_VERSION__ < 199901'. */
sl@0: #if __STDC_VERSION__ < 199901
sl@0: #if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
sl@0: #define	__func__	""
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #if (defined(__INTEL_COMPILER) || (defined(__GNUC__) && __GNUC__ >= 2)) && !defined(__STRICT_ANSI__) || __STDC_VERSION__ >= 199901
sl@0: #ifdef __SYMBIAN32__
sl@0: #ifndef __LONG_LONG_SUPPORTED
sl@0: #define	__LONG_LONG_SUPPORTED
sl@0: #endif /* __LONG_LONG_SUPPORTED */
sl@0: #else
sl@0: #define	__LONG_LONG_SUPPORTED
sl@0: #endif /* __SYMBIAN32__ */
sl@0: #endif
sl@0: 
sl@0: #ifdef __SYMBIAN32__
sl@0: #if ((defined(__ARMCC__) && (__ARMCC_VERSION > 220000) ) || (defined(__WINSCW__)))
sl@0: #ifndef __LONG_LONG_SUPPORTED
sl@0: #define __LONG_LONG_SUPPORTED
sl@0: #endif /* __LONG_LONG_SUPPORTED */
sl@0: #endif
sl@0: #endif /*__SYMBIAN32__*/
sl@0: 
sl@0: 
sl@0: /*
sl@0:  * GCC 2.95 provides `__restrict' as an extension to C90 to support the
sl@0:  * C99-specific `restrict' type qualifier.  We happen to use `__restrict' as
sl@0:  * a way to define the `restrict' type qualifier without disturbing older
sl@0:  * software that is unaware of C99 keywords.
sl@0:  */
sl@0: #if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
sl@0: #if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901
sl@0: #define	__restrict
sl@0: #else
sl@0: #define	__restrict	restrict
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: /*
sl@0:  * GNU C version 2.96 adds explicit branch prediction so that
sl@0:  * the CPU back-end can hint the processor and also so that
sl@0:  * code blocks can be reordered such that the predicted path
sl@0:  * sees a more linear flow, thus improving cache behavior, etc.
sl@0:  *
sl@0:  * The following two macros provide us with a way to utilize this
sl@0:  * compiler feature.  Use __predict_true() if you expect the expression
sl@0:  * to evaluate to true, and __predict_false() if you expect the
sl@0:  * expression to evaluate to false.
sl@0:  *
sl@0:  * A few notes about usage:
sl@0:  *
sl@0:  *	* Generally, __predict_false() error condition checks (unless
sl@0:  *	  you have some _strong_ reason to do otherwise, in which case
sl@0:  *	  document it), and/or __predict_true() `no-error' condition
sl@0:  *	  checks, assuming you want to optimize for the no-error case.
sl@0:  *
sl@0:  *	* Other than that, if you don't know the likelihood of a test
sl@0:  *	  succeeding from empirical or other `hard' evidence, don't
sl@0:  *	  make predictions.
sl@0:  *
sl@0:  *	* These are meant to be used in places that are run `a lot'.
sl@0:  *	  It is wasteful to make predictions in code that is run
sl@0:  *	  seldomly (e.g. at subsystem initialization time) as the
sl@0:  *	  basic block reordering that this affects can often generate
sl@0:  *	  larger code.
sl@0:  */
sl@0: #if __GNUC_PREREQ__(2, 96)
sl@0: #define __predict_true(exp)     __builtin_expect((exp), 1)
sl@0: #define __predict_false(exp)    __builtin_expect((exp), 0)
sl@0: #else
sl@0: #define __predict_true(exp)     (exp)
sl@0: #define __predict_false(exp)    (exp)
sl@0: #endif
sl@0: 
sl@0: /*
sl@0:  * We define this here since <stddef.h>, <sys/queue.h>, and <sys/types.h>
sl@0:  * require it.
sl@0:  */
sl@0: #if !defined(__cplusplus)
sl@0: #define	__offsetof(type, field)	((size_t)(&((type *)0)->field))
sl@0: #else
sl@0: #if defined(__GNUC__)
sl@0: #if(__GNUC__ > 3)
sl@0: #define __offsetof(type, field)					\
sl@0:        (__builtin_offsetof (type,field))
sl@0: #else
sl@0: #define __offsetof(type, field)					\
sl@0:        (__offsetof__ (type,field))
sl@0: #endif
sl@0: #else
sl@0: #define	__offsetof(type, field)	((size_t)(&((type *)0)->field))
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #define	__rangeof(type, start, end) \
sl@0: 	(__offsetof(type, end) - __offsetof(type, start))
sl@0: 
sl@0: /*
sl@0:  * Compiler-dependent macros to declare that functions take printf-like
sl@0:  * or scanf-like arguments.  They are null except for versions of gcc
sl@0:  * that are known to support the features properly (old versions of gcc-2
sl@0:  * didn't permit keeping the keywords out of the application namespace).
sl@0:  */
sl@0: #if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
sl@0: #define	__printflike(fmtarg, firstvararg)
sl@0: #define	__scanflike(fmtarg, firstvararg)
sl@0: #else
sl@0: #define	__printflike(fmtarg, firstvararg) \
sl@0: 	    __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
sl@0: #define	__scanflike(fmtarg, firstvararg) \
sl@0: 	    __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
sl@0: #endif
sl@0: 
sl@0: /* Compiler-dependent macros that rely on FreeBSD-specific extensions. */
sl@0: #if __FreeBSD_cc_version >= 300001 && defined(__GNUC__) && !defined(__INTEL_COMPILER)
sl@0: #define	__printf0like(fmtarg, firstvararg) \
sl@0: 	    __attribute__((__format__ (__printf0__, fmtarg, firstvararg)))
sl@0: #else
sl@0: #define	__printf0like(fmtarg, firstvararg)
sl@0: #endif
sl@0: 
sl@0: #if defined(__GNUC__) || defined(__INTEL_COMPILER)
sl@0: #ifndef __INTEL_COMPILER
sl@0: #define	__strong_reference(sym,aliassym)	\
sl@0: 	extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)));
sl@0: #endif
sl@0: #ifdef __STDC__
sl@0: #define	__weak_reference(sym,alias)	\
sl@0: 	__asm__(".weak " #alias);	\
sl@0: 	__asm__(".equ "  #alias ", " #sym)
sl@0: #define	__warn_references(sym,msg)	\
sl@0: 	__asm__(".section .gnu.warning." #sym);	\
sl@0: 	__asm__(".asciz \"" msg "\"");	\
sl@0: 	__asm__(".previous")
sl@0: #else
sl@0: #define	__weak_reference(sym,alias)	\
sl@0: 	__asm__(".weak alias");		\
sl@0: 	__asm__(".equ alias, sym")
sl@0: #define	__warn_references(sym,msg)	\
sl@0: 	__asm__(".section .gnu.warning.sym"); \
sl@0: 	__asm__(".asciz \"msg\"");	\
sl@0: 	__asm__(".previous")
sl@0: #endif	/* __STDC__ */
sl@0: #endif	/* __GNUC__ || __INTEL_COMPILER */
sl@0: 
sl@0: #if defined(__GNUC__) || defined(__INTEL_COMPILER)
sl@0: #define	__IDSTRING(name,string)	__asm__(".ident\t\"" string "\"")
sl@0: #else
sl@0: /*
sl@0:  * The following definition might not work well if used in header files,
sl@0:  * but it should be better than nothing.  If you want a "do nothing"
sl@0:  * version, then it should generate some harmless declaration, such as:
sl@0:  *    #define __IDSTRING(name,string)	struct __hack
sl@0:  */
sl@0: #define	__IDSTRING(name,string)	static const char name[] __unused = string
sl@0: #endif
sl@0: 
sl@0: /*
sl@0:  * Embed the rcs id of a source file in the resulting library.  Note that in
sl@0:  * more recent ELF binutils, we use .ident allowing the ID to be stripped.
sl@0:  * Usage:
sl@0:  *	__FBSDID("$FreeBSD: src/sys/sys/cdefs.h,v 1.88.2.1 2005/10/09 07:48:48 netchild Exp $");
sl@0:  */
sl@0: #ifndef	__FBSDID
sl@0: #if !defined(lint) && !defined(STRIP_FBSDID)
sl@0: #define	__FBSDID(s)	__IDSTRING(__CONCAT(__rcsid_,__LINE__),s)
sl@0: #else
sl@0: #define	__FBSDID(s)	struct __hack
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #ifndef	__RCSID
sl@0: #ifndef	NO__RCSID
sl@0: #define	__RCSID(s)	__IDSTRING(__CONCAT(__rcsid_,__LINE__),s)
sl@0: #else
sl@0: #define	__RCSID(s)	struct __hack
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #ifndef	__RCSID_SOURCE
sl@0: #ifndef	NO__RCSID_SOURCE
sl@0: #define	__RCSID_SOURCE(s)	__IDSTRING(__CONCAT(__rcsid_source_,__LINE__),s)
sl@0: #else
sl@0: #define	__RCSID_SOURCE(s)	struct __hack
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #ifndef	__SCCSID
sl@0: #ifndef	NO__SCCSID
sl@0: #define	__SCCSID(s)	__IDSTRING(__CONCAT(__sccsid_,__LINE__),s)
sl@0: #else
sl@0: #define	__SCCSID(s)	struct __hack
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #ifndef	__COPYRIGHT
sl@0: #ifndef	NO__COPYRIGHT
sl@0: #define	__COPYRIGHT(s)	__IDSTRING(__CONCAT(__copyright_,__LINE__),s)
sl@0: #else
sl@0: #define	__COPYRIGHT(s)	struct __hack
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #ifndef	__DECONST
sl@0: #define	__DECONST(type, var)	((type)(uintptr_t)(const void *)(var))
sl@0: #endif
sl@0: 
sl@0: #ifndef	__DEVOLATILE
sl@0: #define	__DEVOLATILE(type, var)	((type)(uintptr_t)(volatile void *)(var))
sl@0: #endif
sl@0: 
sl@0: #ifndef	__DEQUALIFY
sl@0: #define	__DEQUALIFY(type, var)	((type)(uintptr_t)(const volatile void *)(var))
sl@0: #endif
sl@0: 
sl@0: /*-
sl@0:  * The following definitions are an extension of the behavior originally
sl@0:  * implemented in <sys/_posix.h>, but with a different level of granularity.
sl@0:  * POSIX.1 requires that the macros we test be defined before any standard
sl@0:  * header file is included.
sl@0:  *
sl@0:  * Here's a quick run-down of the versions:
sl@0:  *  defined(_POSIX_SOURCE)		1003.1-1988
sl@0:  *  _POSIX_C_SOURCE == 1		1003.1-1990
sl@0:  *  _POSIX_C_SOURCE == 2		1003.2-1992 C Language Binding Option
sl@0:  *  _POSIX_C_SOURCE == 199309		1003.1b-1993
sl@0:  *  _POSIX_C_SOURCE == 199506		1003.1c-1995, 1003.1i-1995,
sl@0:  *					and the omnibus ISO/IEC 9945-1: 1996
sl@0:  *  _POSIX_C_SOURCE == 200112		1003.1-2001
sl@0:  *
sl@0:  * In addition, the X/Open Portability Guide, which is now the Single UNIX
sl@0:  * Specification, defines a feature-test macro which indicates the version of
sl@0:  * that specification, and which subsumes _POSIX_C_SOURCE.
sl@0:  *
sl@0:  * Our macros begin with two underscores to avoid namespace screwage.
sl@0:  */
sl@0: 
sl@0: /* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */
sl@0: #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1
sl@0: #undef _POSIX_C_SOURCE		/* Probably illegal, but beyond caring now. */
sl@0: #define	_POSIX_C_SOURCE		199009
sl@0: #endif
sl@0: 
sl@0: /* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */
sl@0: #if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2
sl@0: #undef _POSIX_C_SOURCE
sl@0: #define	_POSIX_C_SOURCE		199209
sl@0: #endif
sl@0: 
sl@0: /* Deal with various X/Open Portability Guides and Single UNIX Spec. */
sl@0: #ifdef _XOPEN_SOURCE
sl@0: #if _XOPEN_SOURCE - 0 >= 600
sl@0: #define	__XSI_VISIBLE		600
sl@0: #undef _POSIX_C_SOURCE
sl@0: #define	_POSIX_C_SOURCE		200112
sl@0: #elif _XOPEN_SOURCE - 0 >= 500
sl@0: #define	__XSI_VISIBLE		500
sl@0: #undef _POSIX_C_SOURCE
sl@0: #define	_POSIX_C_SOURCE		199506
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: /*
sl@0:  * Deal with all versions of POSIX.  The ordering relative to the tests above is
sl@0:  * important.
sl@0:  */
sl@0: #if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE)
sl@0: #define	_POSIX_C_SOURCE		198808
sl@0: #endif
sl@0: #ifdef _POSIX_C_SOURCE
sl@0: #if _POSIX_C_SOURCE >= 200112
sl@0: #ifdef __SYMBIAN32__
sl@0: #define	__XSI_VISIBLE		600
sl@0: #define	__BSD_VISIBLE		1
sl@0: #endif //__SYMBIAN32__
sl@0: #define	__POSIX_VISIBLE		200112
sl@0: #define	__ISO_C_VISIBLE		1999
sl@0: #elif _POSIX_C_SOURCE >= 199506
sl@0: #define	__POSIX_VISIBLE		199506
sl@0: #define	__ISO_C_VISIBLE		1990
sl@0: #elif _POSIX_C_SOURCE >= 199309
sl@0: #define	__POSIX_VISIBLE		199309
sl@0: #define	__ISO_C_VISIBLE		1990
sl@0: #elif _POSIX_C_SOURCE >= 199209
sl@0: #define	__POSIX_VISIBLE		199209
sl@0: #define	__ISO_C_VISIBLE		1990
sl@0: #elif _POSIX_C_SOURCE >= 199009
sl@0: #define	__POSIX_VISIBLE		199009
sl@0: #define	__ISO_C_VISIBLE		1990
sl@0: #else
sl@0: #define	__POSIX_VISIBLE		198808
sl@0: #define	__ISO_C_VISIBLE		0
sl@0: #endif /* _POSIX_C_SOURCE */
sl@0: #else
sl@0: /*-
sl@0:  * Deal with _ANSI_SOURCE:
sl@0:  * If it is defined, and no other compilation environment is explicitly
sl@0:  * requested, then define our internal feature-test macros to zero.  This
sl@0:  * makes no difference to the preprocessor (undefined symbols in preprocessing
sl@0:  * expressions are defined to have value zero), but makes it more convenient for
sl@0:  * a test program to print out the values.
sl@0:  *
sl@0:  * If a program mistakenly defines _ANSI_SOURCE and some other macro such as
sl@0:  * _POSIX_C_SOURCE, we will assume that it wants the broader compilation
sl@0:  * environment (and in fact we will never get here).
sl@0:  */
sl@0: #if defined(_ANSI_SOURCE)	/* Hide almost everything. */
sl@0: #define	__POSIX_VISIBLE		0
sl@0: #define	__XSI_VISIBLE		0
sl@0: #define	__BSD_VISIBLE		0
sl@0: #define	__ISO_C_VISIBLE		1990
sl@0: #elif defined(_C99_SOURCE)	/* Localism to specify strict C99 env. */
sl@0: #define	__POSIX_VISIBLE		0
sl@0: #define	__XSI_VISIBLE		0
sl@0: #define	__BSD_VISIBLE		0
sl@0: #define	__ISO_C_VISIBLE		1999
sl@0: #else				/* Default environment: show everything. */
sl@0: #define	__POSIX_VISIBLE		200112
sl@0: #define	__XSI_VISIBLE		600
sl@0: #define	__BSD_VISIBLE		1
sl@0: #define	__ISO_C_VISIBLE		1999
sl@0: #endif
sl@0: #endif
sl@0: 
sl@0: #endif /* !_SYS_CDEFS_H_ */