WebSVN – Kolibri OS – Diff – /contrib/sdk/sources/newlib/libc/include/sys/cdefs.h


/* libc/sys/linux/sys/cdefs.h - Helper macros for K&R vs. ANSI C compat. */
 
/* Written 2000 by Werner Almesberger */
 
/*-
 * 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.
 * 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
 * $FreeBSD$
 */
 
#ifndef	_SYS_CDEFS_H_
#define	_SYS_CDEFS_H_
 
#include 
#include 
#include 
 
#define __PMT(args)	args
#define __DOTS    	, ...
#define __THROW
 
#ifdef __GNUC__
# define __ASMNAME(cname)  __XSTRING (__USER_LABEL_PREFIX__) cname
#endif
 
#define __ptr_t void *
#define __long_double_t  long double
 
#define __attribute_malloc__
#define __attribute_pure__
#define __attribute_format_strfmon__(a,b)
#define __flexarr      [0]
 
#ifndef __BOUNDED_POINTERS__
# define __bounded      /* nothing */
# define __unbounded    /* nothing */
# define __ptrvalue     /* nothing */
#endif
 
/*
 * Testing against Clang-specific extensions.
 */
#ifndef	__has_attribute
#define	__has_attribute(x)	0
#endif
#ifndef	__has_extension
#define	__has_extension		__has_feature
#endif
#ifndef	__has_feature
#define	__has_feature(x)	0
#endif
#ifndef	__has_include
#define	__has_include(x)	0
#endif
#ifndef	__has_builtin
#define	__has_builtin(x)	0
#endif
 
#if defined(__cplusplus)
#define	__BEGIN_DECLS	extern "C" {
#define	__END_DECLS	}
#else
#define	__BEGIN_DECLS
#define	__END_DECLS
#endif
 
/*
 * This code has been put in place to help reduce the addition of
 * compiler specific defines in FreeBSD code.  It helps to aid in
 * having a compiler-agnostic source tree.
 */
 
#if defined(__GNUC__) || defined(__INTEL_COMPILER)
 
#if __GNUC__ >= 3 || defined(__INTEL_COMPILER)
#define	__GNUCLIKE_ASM 3
#define	__GNUCLIKE_MATH_BUILTIN_CONSTANTS
#else
#define	__GNUCLIKE_ASM 2
#endif
#define	__GNUCLIKE___TYPEOF 1
#define	__GNUCLIKE___OFFSETOF 1
#define	__GNUCLIKE___SECTION 1
 
#ifndef __INTEL_COMPILER
#define	__GNUCLIKE_CTOR_SECTION_HANDLING 1
#endif
 
#define	__GNUCLIKE_BUILTIN_CONSTANT_P 1
#if defined(__INTEL_COMPILER) && defined(__cplusplus) && \
   __INTEL_COMPILER < 800
#undef __GNUCLIKE_BUILTIN_CONSTANT_P
#endif
 
#if (__GNUC_MINOR__ > 95 || __GNUC__ >= 3)
#define	__GNUCLIKE_BUILTIN_VARARGS 1
#define	__GNUCLIKE_BUILTIN_STDARG 1
#define	__GNUCLIKE_BUILTIN_VAALIST 1
#endif
 
#if defined(__GNUC__)
#define	__GNUC_VA_LIST_COMPATIBILITY 1
#endif
 
/*
 * Compiler memory barriers, specific to gcc and clang.
 */
#if defined(__GNUC__)
#define	__compiler_membar()	__asm __volatile(" " : : : "memory")
#endif
 
#ifndef __INTEL_COMPILER
#define	__GNUCLIKE_BUILTIN_NEXT_ARG 1
#define	__GNUCLIKE_MATH_BUILTIN_RELOPS
#endif
 
#define	__GNUCLIKE_BUILTIN_MEMCPY 1
 
/* XXX: if __GNUC__ >= 2: not tested everywhere originally, where replaced */
#define	__CC_SUPPORTS_INLINE 1
#define	__CC_SUPPORTS___INLINE 1
#define	__CC_SUPPORTS___INLINE__ 1
 
#define	__CC_SUPPORTS___FUNC__ 1
#define	__CC_SUPPORTS_WARNING 1
 
#define	__CC_SUPPORTS_VARADIC_XXX 1 /* see varargs.h */
 
#define	__CC_SUPPORTS_DYNAMIC_ARRAY_INIT 1
 
#endif /* __GNUC__ || __INTEL_COMPILER */
 
/*
 * 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 to use if it must work in non-ANSI
 * mode -- there must be no spaces between its arguments, and for nested
 * __CONCAT's, all the __CONCAT's must be at the left.  __CONCAT can also
 * concatenate double-quoted strings produced by the __STRING macro, but
 * this only works with ANSI C.
 *
 * __XSTRING is like __STRING, but it expands any macros in its argument
 * first.  It is only available with ANSI C.
 */
#if defined(__STDC__) || defined(__cplusplus)
#define	__P(protos)	protos		/* full-blown ANSI C */
#define	__CONCAT1(x,y)	x ## y
#define	__CONCAT(x,y)	__CONCAT1(x,y)
#define	__STRING(x)	#x		/* stringify without expanding x */
#define	__XSTRING(x)	__STRING(x)	/* expand x, then stringify */
 
#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
#if !(defined(__CC_SUPPORTS___INLINE))
#define	__inline			/* delete GCC keyword */
#endif /* ! __CC_SUPPORTS___INLINE */
#endif /* !__cplusplus */
 
#else	/* !(__STDC__ || __cplusplus) */
#define	__P(protos)	()		/* traditional C preprocessor */
#define	__CONCAT(x,y)	x/**/y
#define	__STRING(x)	"x"
 
#if !defined(__CC_SUPPORTS___INLINE)
#define	__const				/* delete pseudo-ANSI C keywords */
#define	__inline
#define	__signed
#define	__volatile
/*
 * 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				/* delete ANSI C keywords */
#define	inline
#define	signed
#define	volatile
#endif	/* !NO_ANSI_KEYWORDS */
#endif	/* !__CC_SUPPORTS___INLINE */
#endif	/* !(__STDC__ || __cplusplus) */
 
/*
 * 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	__dead2
#define	__pure2
#define	__unused
#define	__packed
#define	__aligned(x)
#define	__alloc_align(x)
#define	__alloc_size(x)
#define	__section(x)
#define	__weak_symbol
#else
#define	__weak_symbol	__attribute__((__weak__))
#if !__GNUC_PREREQ__(2, 5) && !defined(__INTEL_COMPILER)
#define	__dead2
#define	__pure2
#define	__unused
#endif
#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7 && !defined(__INTEL_COMPILER)
#define	__dead2		__attribute__((__noreturn__))
#define	__pure2		__attribute__((__const__))
#define	__unused
/* XXX Find out what to do for __packed, __aligned and __section */
#endif
#if __GNUC_PREREQ__(2, 7) || defined(__INTEL_COMPILER)
#define	__dead2		__attribute__((__noreturn__))
#define	__pure2		__attribute__((__const__))
#define	__unused	__attribute__((__unused__))
#define	__used		__attribute__((__used__))
#define	__packed	__attribute__((__packed__))
#define	__aligned(x)	__attribute__((__aligned__(x)))
#define	__section(x)	__attribute__((__section__(x)))
#endif
#if __GNUC_PREREQ__(4, 3) || __has_attribute(__alloc_size__)
#define	__alloc_size(x)	__attribute__((__alloc_size__(x)))
#else
#define	__alloc_size(x)
#endif
#if __GNUC_PREREQ__(4, 9) || __has_attribute(__alloc_align__)
#define	__alloc_align(x)	__attribute__((__alloc_align__(x)))
#else
#define	__alloc_align(x)
#endif
#endif /* lint */
 
#if !__GNUC_PREREQ__(2, 95)
#define	__alignof(x)	__offsetof(struct { char __a; x __b; }, __b)
#endif
 
/*
 * Keywords added in C11.
 */
 
#if !defined(__STDC_VERSION__) || __STDC_VERSION__ < 201112L || defined(lint)
 
#if !__has_extension(c_alignas)
#if (defined(__cplusplus) && __cplusplus >= 201103L) || \
    __has_extension(cxx_alignas)
#define	_Alignas(x)		alignas(x)
#else
/* XXX: Only emulates _Alignas(constant-expression); not _Alignas(type-name). */
#define	_Alignas(x)		__aligned(x)
#endif
#endif
 
#if defined(__cplusplus) && __cplusplus >= 201103L
#define	_Alignof(x)		alignof(x)
#else
#define	_Alignof(x)		__alignof(x)
#endif
 
#if !__has_extension(c_atomic) && !__has_extension(cxx_atomic)
/*
 * No native support for _Atomic(). Place object in structure to prevent
 * most forms of direct non-atomic access.
 */
#define	_Atomic(T)		struct { T volatile __val; }
#endif
 
#if defined(__cplusplus) && __cplusplus >= 201103L
#define	_Noreturn		[[noreturn]]
#else
#define	_Noreturn		__dead2
#endif
 
#if !__has_extension(c_static_assert)
#if (defined(__cplusplus) && __cplusplus >= 201103L) || \
    __has_extension(cxx_static_assert)
#define	_Static_assert(x, y)	static_assert(x, y)
#elif __GNUC_PREREQ__(4,6)
/* Nothing, gcc 4.6 and higher has _Static_assert built-in */
#elif defined(__COUNTER__)
#define	_Static_assert(x, y)	__Static_assert(x, __COUNTER__)
#define	__Static_assert(x, y)	___Static_assert(x, y)
#define	___Static_assert(x, y)	typedef char __assert_ ## y[(x) ? 1 : -1] \
				__unused
#else
#define	_Static_assert(x, y)	struct __hack
#endif
#endif
 
#if !__has_extension(c_thread_local)
/*
 * XXX: Some compilers (Clang 3.3, GCC 4.7) falsely announce C++11 mode
 * without actually supporting the thread_local keyword. Don't check for
 * the presence of C++11 when defining _Thread_local.
 */
#if /* (defined(__cplusplus) && __cplusplus >= 201103L) || */ \
    __has_extension(cxx_thread_local)
#define	_Thread_local		thread_local
#else
#define	_Thread_local		__thread
#endif
#endif
 
#endif /* __STDC_VERSION__ || __STDC_VERSION__ < 201112L */
 
/*
 * Emulation of C11 _Generic().  Unlike the previously defined C11
 * keywords, it is not possible to implement this using exactly the same
 * syntax.  Therefore implement something similar under the name
 * __generic().  Unlike _Generic(), this macro can only distinguish
 * between a single type, so it requires nested invocations to
 * distinguish multiple cases.
 */
 
#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) || \
    __has_extension(c_generic_selections)
#define	__generic(expr, t, yes, no)					\
	_Generic(expr, t: yes, default: no)
#elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus)
#define	__generic(expr, t, yes, no)					\
	__builtin_choose_expr(						\
	    __builtin_types_compatible_p(__typeof(expr), t), yes, no)
#endif
 
#if __GNUC_PREREQ__(2, 96)
#define	__malloc_like	__attribute__((__malloc__))
#define	__pure		__attribute__((__pure__))
#else
#define	__malloc_like
#define	__pure
#endif
 
#if __GNUC_PREREQ__(3, 1) || (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)
#define	__always_inline	__attribute__((__always_inline__))
#else
#define	__always_inline
#endif
 
#if __GNUC_PREREQ__(3, 1)
#define	__noinline	__attribute__ ((__noinline__))
#else
#define	__noinline
#endif
 
#if __GNUC_PREREQ__(3, 3)
#define	__nonnull(x)	__attribute__((__nonnull__(x)))
#define	__nonnull_all	__attribute__((__nonnull__))
#else
#define	__nonnull(x)
#define	__nonnull_all
#endif
 
#if __GNUC_PREREQ__(3, 4)
#define	__fastcall	__attribute__((__fastcall__))
#define	__result_use_check	__attribute__((__warn_unused_result__))
#else
#define	__fastcall
#define	__result_use_check
#endif
 
#if __GNUC_PREREQ__(4, 1)
#define	__returns_twice	__attribute__((__returns_twice__))
#else
#define	__returns_twice
#endif
 
#if __GNUC_PREREQ__(4, 6) || __has_builtin(__builtin_unreachable)
#define	__unreachable()	__builtin_unreachable()
#else
#define	__unreachable()	((void)0)
#endif
 
/* XXX: should use `#if __STDC_VERSION__ < 199901'. */
#if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
#define	__func__	NULL
#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 !defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901 || defined(lint)
#define	__restrict
#else
#define	__restrict	restrict
#endif
#endif
 
/*
 * GNU C version 2.96 adds explicit branch prediction so that
 * the CPU back-end can hint the processor and also so that
 * code blocks can be reordered such that the predicted path
 * sees a more linear flow, thus improving cache behavior, etc.
 *
 * The following two macros provide us with a way to utilize this
 * compiler feature.  Use __predict_true() if you expect the expression
 * to evaluate to true, and __predict_false() if you expect the
 * expression to evaluate to false.
 *
 * A few notes about usage:
 *
 *	* Generally, __predict_false() error condition checks (unless
 *	  you have some _strong_ reason to do otherwise, in which case
 *	  document it), and/or __predict_true() `no-error' condition
 *	  checks, assuming you want to optimize for the no-error case.
 *
 *	* Other than that, if you don't know the likelihood of a test
 *	  succeeding from empirical or other `hard' evidence, don't
 *	  make predictions.
 *
 *	* These are meant to be used in places that are run `a lot'.
 *	  It is wasteful to make predictions in code that is run
 *	  seldomly (e.g. at subsystem initialization time) as the
 *	  basic block reordering that this affects can often generate
 *	  larger code.
 */
#if __GNUC_PREREQ__(2, 96)
#define	__predict_true(exp)     __builtin_expect((exp), 1)
#define	__predict_false(exp)    __builtin_expect((exp), 0)
#else
#define	__predict_true(exp)     (exp)
#define	__predict_false(exp)    (exp)
#endif
 
#if __GNUC_PREREQ__(4, 0)
#define	__sentinel	__attribute__((__sentinel__))
#define	__exported	__attribute__((__visibility__("default")))
#define	__hidden	__attribute__((__visibility__("hidden")))
#else
#define	__sentinel
#define	__exported
#define	__hidden
#endif
 
#define __offsetof(type, field)	offsetof(type, field)
#define	__rangeof(type, start, end) \
	(__offsetof(type, end) - __offsetof(type, start))
 
/*
 * Given the pointer x to the member m of the struct s, return
 * a pointer to the containing structure.  When using GCC, we first
 * assign pointer x to a local variable, to check that its type is
 * compatible with member m.
 */
#if __GNUC_PREREQ__(3, 1)
#define	__containerof(x, s, m) ({					\
	const volatile __typeof(((s *)0)->m) *__x = (x);		\
	__DEQUALIFY(s *, (const volatile char *)__x - __offsetof(s, m));\
})
#else
#define	__containerof(x, s, m)						\
	__DEQUALIFY(s *, (const volatile char *)(x) - __offsetof(s, m))
#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 (old versions of gcc-2
 * didn't permit keeping the keywords out of the application namespace).
 */
#if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
#define	__printflike(fmtarg, firstvararg)
#define	__scanflike(fmtarg, firstvararg)
#define	__format_arg(fmtarg)
#define	__strfmonlike(fmtarg, firstvararg)
#define	__strftimelike(fmtarg, firstvararg)
#else
#define	__printflike(fmtarg, firstvararg) \
	    __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
#define	__scanflike(fmtarg, firstvararg) \
	    __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))
#define	__format_arg(fmtarg)	__attribute__((__format_arg__ (fmtarg)))
#define	__strfmonlike(fmtarg, firstvararg) \
	    __attribute__((__format__ (__strfmon__, fmtarg, firstvararg)))
#define	__strftimelike(fmtarg, firstvararg) \
	    __attribute__((__format__ (__strftime__, fmtarg, firstvararg)))
#endif
 
/*
 * FORTIFY_SOURCE, and perhaps other compiler-specific features, require
 * the use of non-standard inlining.  In general we should try to avoid
 * using these but GCC-compatible compilers tend to support the extensions
 * well enough to use them in limited cases.
 */ 
#if defined(__GNUC_GNU_INLINE__) || defined(__GNUC_STDC_INLINE__)
#if __GNUC_PREREQ__(4, 3) || __has_attribute(__artificial__)
#define	__gnu_inline	__attribute__((__gnu_inline__, __artificial__))
#else
#define	__gnu_inline	__attribute__((__gnu_inline__))
#endif /* artificial */
#else
#define	__gnu_inline
#endif
 
/* Compiler-dependent macros that rely on FreeBSD-specific extensions. */
#if defined(__FreeBSD_cc_version) && __FreeBSD_cc_version >= 300001 && \
    defined(__GNUC__) && !defined(__INTEL_COMPILER)
#define	__printf0like(fmtarg, firstvararg) \
	    __attribute__((__format__ (__printf0__, fmtarg, firstvararg)))
#else
#define	__printf0like(fmtarg, firstvararg)
#endif
 
#if defined(__GNUC__) || defined(__INTEL_COMPILER)
#ifndef __INTEL_COMPILER
#define	__strong_reference(sym,aliassym)	\
	extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)))
#endif
#ifdef __ELF__
#ifdef __STDC__
#define	__weak_reference(sym,alias)	\
	__asm__(".weak " #alias);	\
	__asm__(".equ "  #alias ", " #sym)
#define	__warn_references(sym,msg)	\
	__asm__(".section .gnu.warning." #sym);	\
	__asm__(".asciz \"" msg "\"");	\
	__asm__(".previous")
#define	__sym_compat(sym,impl,verid)	\
	__asm__(".symver " #impl ", " #sym "@" #verid)
#define	__sym_default(sym,impl,verid)	\
	__asm__(".symver " #impl ", " #sym "@@" #verid)
#else
#define	__weak_reference(sym,alias)	\
	__asm__(".weak alias");		\
	__asm__(".equ alias, sym")
#define	__warn_references(sym,msg)	\
	__asm__(".section .gnu.warning.sym"); \
	__asm__(".asciz \"msg\"");	\
	__asm__(".previous")
#define	__sym_compat(sym,impl,verid)	\
	__asm__(".symver impl, sym@verid")
#define	__sym_default(impl,sym,verid)	\
	__asm__(".symver impl, sym@@verid")
#endif	/* __STDC__ */
#else	/* !__ELF__ */
#ifdef __STDC__
#define	__weak_reference(sym,alias)	\
	__asm__(".stabs \"_" #alias "\",11,0,0,0");	\
	__asm__(".stabs \"_" #sym "\",1,0,0,0")
#define	__warn_references(sym,msg)	\
	__asm__(".stabs \"" msg "\",30,0,0,0");		\
	__asm__(".stabs \"_" #sym "\",1,0,0,0")
#else
#define	__weak_reference(sym,alias)	\
	__asm__(".stabs \"_/**/alias\",11,0,0,0");	\
	__asm__(".stabs \"_/**/sym\",1,0,0,0")
#define	__warn_references(sym,msg)	\
	__asm__(".stabs msg,30,0,0,0");			\
	__asm__(".stabs \"_/**/sym\",1,0,0,0")
#endif	/* __STDC__ */
#endif	/* __ELF__ */
#endif	/* __GNUC__ || __INTEL_COMPILER */
 
#ifndef	__FBSDID
#define	__FBSDID(s)	struct __hack
#endif
 
#ifndef	__RCSID
#define	__RCSID(s)	struct __hack
#endif
 
#ifndef	__RCSID_SOURCE
#define	__RCSID_SOURCE(s)	struct __hack
#endif
 
#ifndef	__SCCSID
#define	__SCCSID(s)	struct __hack
#endif
 
#ifndef	__COPYRIGHT
#define	__COPYRIGHT(s)	struct __hack
#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
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
/*
 * Type Safety Checking
 *
 * Clang provides additional attributes to enable checking type safety
 * properties that cannot be enforced by the C type system. 
 */
 
#if __has_attribute(__argument_with_type_tag__) && \
    __has_attribute(__type_tag_for_datatype__) && !defined(lint)
#define	__arg_type_tag(arg_kind, arg_idx, type_tag_idx) \
	    __attribute__((__argument_with_type_tag__(arg_kind, arg_idx, type_tag_idx)))
#define	__datatype_type_tag(kind, type) \
	    __attribute__((__type_tag_for_datatype__(kind, type)))
#else
#define	__arg_type_tag(arg_kind, arg_idx, type_tag_idx)
#define	__datatype_type_tag(kind, type)
#endif
 
/*
 * Lock annotations.
 *
 * Clang provides support for doing basic thread-safety tests at
 * compile-time, by marking which locks will/should be held when
 * entering/leaving a functions.
 *
 * Furthermore, it is also possible to annotate variables and structure
 * members to enforce that they are only accessed when certain locks are
 * held.
 */
 
#if __has_extension(c_thread_safety_attributes)
#define	__lock_annotate(x)	__attribute__((x))
#else
#define	__lock_annotate(x)
#endif
 
/* Structure implements a lock. */
#define	__lockable		__lock_annotate(lockable)
 
/* Function acquires an exclusive or shared lock. */
#define	__locks_exclusive(...) \
	__lock_annotate(exclusive_lock_function(__VA_ARGS__))
#define	__locks_shared(...) \
	__lock_annotate(shared_lock_function(__VA_ARGS__))
 
/* Function attempts to acquire an exclusive or shared lock. */
#define	__trylocks_exclusive(...) \
	__lock_annotate(exclusive_trylock_function(__VA_ARGS__))
#define	__trylocks_shared(...) \
	__lock_annotate(shared_trylock_function(__VA_ARGS__))
 
/* Function releases a lock. */
#define	__unlocks(...)		__lock_annotate(unlock_function(__VA_ARGS__))
 
/* Function asserts that an exclusive or shared lock is held. */
#define	__asserts_exclusive(...) \
	__lock_annotate(assert_exclusive_lock(__VA_ARGS__))
#define	__asserts_shared(...) \
	__lock_annotate(assert_shared_lock(__VA_ARGS__))
 
/* Function requires that an exclusive or shared lock is or is not held. */
#define	__requires_exclusive(...) \
	__lock_annotate(exclusive_locks_required(__VA_ARGS__))
#define	__requires_shared(...) \
	__lock_annotate(shared_locks_required(__VA_ARGS__))
#define	__requires_unlocked(...) \
	__lock_annotate(locks_excluded(__VA_ARGS__))
 
/* Function should not be analyzed. */
#define	__no_lock_analysis	__lock_annotate(no_thread_safety_analysis)
 
/* Guard variables and structure members by lock. */
#define	__guarded_by(x)		__lock_annotate(guarded_by(x))
#define	__pt_guarded_by(x)	__lock_annotate(pt_guarded_by(x))
 
#endif /* !_SYS_CDEFS_H_ */

Rev 6109	Rev 6536
1	/* libc/sys/linux/sys/cdefs.h - Helper macros for K&R vs. ANSI C compat. */	1	/* libc/sys/linux/sys/cdefs.h - Helper macros for K&R vs. ANSI C compat. */
2		2
3	/* Written 2000 by Werner Almesberger */	3	/* Written 2000 by Werner Almesberger */
4		4
5	/*-	5	/*-
6	* Copyright (c) 1991, 1993	6	* Copyright (c) 1991, 1993
7	* The Regents of the University of California. All rights reserved.	7	* The Regents of the University of California. All rights reserved.
8	*	8	*
9	* This code is derived from software contributed to Berkeley by	9	* This code is derived from software contributed to Berkeley by
10	* Berkeley Software Design, Inc.	10	* Berkeley Software Design, Inc.
11	*	11	*
12	* Redistribution and use in source and binary forms, with or without	12	* Redistribution and use in source and binary forms, with or without
13	* modification, are permitted provided that the following conditions	13	* modification, are permitted provided that the following conditions
14	* are met:	14	* are met:
15	* 1. Redistributions of source code must retain the above copyright	15	* 1. Redistributions of source code must retain the above copyright
16	* notice, this list of conditions and the following disclaimer.	16	* notice, this list of conditions and the following disclaimer.
17	* 2. Redistributions in binary form must reproduce the above copyright	17	* 2. Redistributions in binary form must reproduce the above copyright
18	* notice, this list of conditions and the following disclaimer in the	18	* notice, this list of conditions and the following disclaimer in the
19	* documentation and/or other materials provided with the distribution.	19	* documentation and/or other materials provided with the distribution.
20	* 4. Neither the name of the University nor the names of 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	21	* may be used to endorse or promote products derived from this software
22	* without specific prior written permission.	22	* without specific prior written permission.
23	*	23	*
24	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND	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	25	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	26	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE	27	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL	28	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS	29	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)	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	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	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	33	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34	* SUCH DAMAGE.	34	* SUCH DAMAGE.
35	*	35	*
36	* @(#)cdefs.h 8.8 (Berkeley) 1/9/95	36	* @(#)cdefs.h 8.8 (Berkeley) 1/9/95
37	* $FreeBSD$	37	* $FreeBSD$
38	*/	38	*/
39		39
40	#ifndef _SYS_CDEFS_H_	40	#ifndef _SYS_CDEFS_H_
41	#define _SYS_CDEFS_H_	41	#define _SYS_CDEFS_H_
42		42
43	#include	43	#include
44	#include	44	#include
45	#include	45	#include
46		46
47	#define __PMT(args) args	47	#define __PMT(args) args
48	#define __DOTS , ...	48	#define __DOTS , ...
49	#define __THROW	49	#define __THROW
50		50
51	#ifdef __GNUC__	51	#ifdef __GNUC__
52	# define __ASMNAME(cname) __XSTRING (__USER_LABEL_PREFIX__) cname	52	# define __ASMNAME(cname) __XSTRING (__USER_LABEL_PREFIX__) cname
53	#endif	53	#endif
54		54
55	#define __ptr_t void *	55	#define __ptr_t void *
56	#define __long_double_t long double	56	#define __long_double_t long double
57		57
58	#define __attribute_malloc__	58	#define __attribute_malloc__
59	#define __attribute_pure__	59	#define __attribute_pure__
60	#define __attribute_format_strfmon__(a,b)	60	#define __attribute_format_strfmon__(a,b)
61	#define __flexarr [0]	61	#define __flexarr [0]
62		62
63	#ifndef __BOUNDED_POINTERS__	63	#ifndef __BOUNDED_POINTERS__
64	# define __bounded /* nothing */	64	# define __bounded /* nothing */
65	# define __unbounded /* nothing */	65	# define __unbounded /* nothing */
66	# define __ptrvalue /* nothing */	66	# define __ptrvalue /* nothing */
67	#endif	67	#endif
68		68
69	/*	69	/*
70	* Testing against Clang-specific extensions.	70	* Testing against Clang-specific extensions.
71	*/	71	*/
72	#ifndef __has_attribute	72	#ifndef __has_attribute
73	#define __has_attribute(x) 0	73	#define __has_attribute(x) 0
74	#endif	74	#endif
75	#ifndef __has_extension	75	#ifndef __has_extension
76	#define __has_extension __has_feature	76	#define __has_extension __has_feature
77	#endif	77	#endif
78	#ifndef __has_feature	78	#ifndef __has_feature
79	#define __has_feature(x) 0	79	#define __has_feature(x) 0
80	#endif	80	#endif
81	#ifndef __has_include	81	#ifndef __has_include
82	#define __has_include(x) 0	82	#define __has_include(x) 0
83	#endif	83	#endif
84	#ifndef __has_builtin	84	#ifndef __has_builtin
85	#define __has_builtin(x) 0	85	#define __has_builtin(x) 0
86	#endif	86	#endif
87		87
88	#if defined(__cplusplus)	88	#if defined(__cplusplus)
89	#define __BEGIN_DECLS extern "C" {	89	#define __BEGIN_DECLS extern "C" {
90	#define __END_DECLS }	90	#define __END_DECLS }
91	#else	91	#else
92	#define __BEGIN_DECLS	92	#define __BEGIN_DECLS
93	#define __END_DECLS	93	#define __END_DECLS
94	#endif	94	#endif
95		95
96	/*	96	/*
97	* This code has been put in place to help reduce the addition of	97	* This code has been put in place to help reduce the addition of
98	* compiler specific defines in FreeBSD code. It helps to aid in	98	* compiler specific defines in FreeBSD code. It helps to aid in
99	* having a compiler-agnostic source tree.	99	* having a compiler-agnostic source tree.
100	*/	100	*/
101		101
102	#if defined(__GNUC__) \|\| defined(__INTEL_COMPILER)	102	#if defined(__GNUC__) \|\| defined(__INTEL_COMPILER)
103		103
104	#if __GNUC__ >= 3 \|\| defined(__INTEL_COMPILER)	104	#if __GNUC__ >= 3 \|\| defined(__INTEL_COMPILER)
105	#define __GNUCLIKE_ASM 3	105	#define __GNUCLIKE_ASM 3
106	#define __GNUCLIKE_MATH_BUILTIN_CONSTANTS	106	#define __GNUCLIKE_MATH_BUILTIN_CONSTANTS
107	#else	107	#else
108	#define __GNUCLIKE_ASM 2	108	#define __GNUCLIKE_ASM 2
109	#endif	109	#endif
110	#define __GNUCLIKE___TYPEOF 1	110	#define __GNUCLIKE___TYPEOF 1
111	#define __GNUCLIKE___OFFSETOF 1	111	#define __GNUCLIKE___OFFSETOF 1
112	#define __GNUCLIKE___SECTION 1	112	#define __GNUCLIKE___SECTION 1
113		113
114	#ifndef __INTEL_COMPILER	114	#ifndef __INTEL_COMPILER
115	#define __GNUCLIKE_CTOR_SECTION_HANDLING 1	115	#define __GNUCLIKE_CTOR_SECTION_HANDLING 1
116	#endif	116	#endif
117		117
118	#define __GNUCLIKE_BUILTIN_CONSTANT_P 1	118	#define __GNUCLIKE_BUILTIN_CONSTANT_P 1
119	#if defined(__INTEL_COMPILER) && defined(__cplusplus) && \	119	#if defined(__INTEL_COMPILER) && defined(__cplusplus) && \
120	__INTEL_COMPILER < 800	120	__INTEL_COMPILER < 800
121	#undef __GNUCLIKE_BUILTIN_CONSTANT_P	121	#undef __GNUCLIKE_BUILTIN_CONSTANT_P
122	#endif	122	#endif
123		123
124	#if (__GNUC_MINOR__ > 95 \|\| __GNUC__ >= 3)	124	#if (__GNUC_MINOR__ > 95 \|\| __GNUC__ >= 3)
125	#define __GNUCLIKE_BUILTIN_VARARGS 1	125	#define __GNUCLIKE_BUILTIN_VARARGS 1
126	#define __GNUCLIKE_BUILTIN_STDARG 1	126	#define __GNUCLIKE_BUILTIN_STDARG 1
127	#define __GNUCLIKE_BUILTIN_VAALIST 1	127	#define __GNUCLIKE_BUILTIN_VAALIST 1
128	#endif	128	#endif
129		129
130	#if defined(__GNUC__)	130	#if defined(__GNUC__)
131	#define __GNUC_VA_LIST_COMPATIBILITY 1	131	#define __GNUC_VA_LIST_COMPATIBILITY 1
132	#endif	132	#endif
133		133
134	/*	134	/*
135	* Compiler memory barriers, specific to gcc and clang.	135	* Compiler memory barriers, specific to gcc and clang.
136	*/	136	*/
137	#if defined(__GNUC__)	137	#if defined(__GNUC__)
138	#define __compiler_membar() __asm __volatile(" " : : : "memory")	138	#define __compiler_membar() __asm __volatile(" " : : : "memory")
139	#endif	139	#endif
140		140
141	#ifndef __INTEL_COMPILER	141	#ifndef __INTEL_COMPILER
142	#define __GNUCLIKE_BUILTIN_NEXT_ARG 1	142	#define __GNUCLIKE_BUILTIN_NEXT_ARG 1
143	#define __GNUCLIKE_MATH_BUILTIN_RELOPS	143	#define __GNUCLIKE_MATH_BUILTIN_RELOPS
144	#endif	144	#endif
145		145
146	#define __GNUCLIKE_BUILTIN_MEMCPY 1	146	#define __GNUCLIKE_BUILTIN_MEMCPY 1
147		147
148	/* XXX: if __GNUC__ >= 2: not tested everywhere originally, where replaced */	148	/* XXX: if __GNUC__ >= 2: not tested everywhere originally, where replaced */
149	#define __CC_SUPPORTS_INLINE 1	149	#define __CC_SUPPORTS_INLINE 1
150	#define __CC_SUPPORTS___INLINE 1	150	#define __CC_SUPPORTS___INLINE 1
151	#define __CC_SUPPORTS___INLINE__ 1	151	#define __CC_SUPPORTS___INLINE__ 1
152		152
153	#define __CC_SUPPORTS___FUNC__ 1	153	#define __CC_SUPPORTS___FUNC__ 1
154	#define __CC_SUPPORTS_WARNING 1	154	#define __CC_SUPPORTS_WARNING 1
155		155
156	#define __CC_SUPPORTS_VARADIC_XXX 1 /* see varargs.h */	156	#define __CC_SUPPORTS_VARADIC_XXX 1 /* see varargs.h */
157		157
158	#define __CC_SUPPORTS_DYNAMIC_ARRAY_INIT 1	158	#define __CC_SUPPORTS_DYNAMIC_ARRAY_INIT 1
159		159
160	#endif /* __GNUC__ \|\| __INTEL_COMPILER */	160	#endif /* __GNUC__ \|\| __INTEL_COMPILER */
161		161
162	/*	162	/*
163	* The __CONCAT macro is used to concatenate parts of symbol names, e.g.	163	* The __CONCAT macro is used to concatenate parts of symbol names, e.g.
164	* with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.	164	* with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
165	* The __CONCAT macro is a bit tricky to use if it must work in non-ANSI	165	* The __CONCAT macro is a bit tricky to use if it must work in non-ANSI
166	* mode -- there must be no spaces between its arguments, and for nested	166	* mode -- there must be no spaces between its arguments, and for nested
167	* __CONCAT's, all the __CONCAT's must be at the left. __CONCAT can also	167	* __CONCAT's, all the __CONCAT's must be at the left. __CONCAT can also
168	* concatenate double-quoted strings produced by the __STRING macro, but	168	* concatenate double-quoted strings produced by the __STRING macro, but
169	* this only works with ANSI C.	169	* this only works with ANSI C.
170	*	170	*
171	* __XSTRING is like __STRING, but it expands any macros in its argument	171	* __XSTRING is like __STRING, but it expands any macros in its argument
172	* first. It is only available with ANSI C.	172	* first. It is only available with ANSI C.
173	*/	173	*/
174	#if defined(__STDC__) \|\| defined(__cplusplus)	174	#if defined(__STDC__) \|\| defined(__cplusplus)
175	#define __P(protos) protos /* full-blown ANSI C */	175	#define __P(protos) protos /* full-blown ANSI C */
176	#define __CONCAT1(x,y) x ## y	176	#define __CONCAT1(x,y) x ## y
177	#define __CONCAT(x,y) __CONCAT1(x,y)	177	#define __CONCAT(x,y) __CONCAT1(x,y)
178	#define __STRING(x) #x /* stringify without expanding x */	178	#define __STRING(x) #x /* stringify without expanding x */
179	#define __XSTRING(x) __STRING(x) /* expand x, then stringify */	179	#define __XSTRING(x) __STRING(x) /* expand x, then stringify */
180		180
181	#define __const const /* define reserved names to standard */	181	#define __const const /* define reserved names to standard */
182	#define __signed signed	182	#define __signed signed
183	#define __volatile volatile	183	#define __volatile volatile
184	#if defined(__cplusplus)	184	#if defined(__cplusplus)
185	#define __inline inline /* convert to C++ keyword */	185	#define __inline inline /* convert to C++ keyword */
186	#else	186	#else
187	#if !(defined(__CC_SUPPORTS___INLINE))	187	#if !(defined(__CC_SUPPORTS___INLINE))
188	#define __inline /* delete GCC keyword */	188	#define __inline /* delete GCC keyword */
189	#endif /* ! __CC_SUPPORTS___INLINE */	189	#endif /* ! __CC_SUPPORTS___INLINE */
190	#endif /* !__cplusplus */	190	#endif /* !__cplusplus */
191		191
192	#else /* !(__STDC__ \|\| __cplusplus) */	192	#else /* !(__STDC__ \|\| __cplusplus) */
193	#define __P(protos) () /* traditional C preprocessor */	193	#define __P(protos) () /* traditional C preprocessor */
194	#define __CONCAT(x,y) x/**/y	194	#define __CONCAT(x,y) x/**/y
195	#define __STRING(x) "x"	195	#define __STRING(x) "x"
196		196
197	#if !defined(__CC_SUPPORTS___INLINE)	197	#if !defined(__CC_SUPPORTS___INLINE)
198	#define __const /* delete pseudo-ANSI C keywords */	198	#define __const /* delete pseudo-ANSI C keywords */
199	#define __inline	199	#define __inline
200	#define __signed	200	#define __signed
201	#define __volatile	201	#define __volatile
202	/*	202	/*
203	* In non-ANSI C environments, new programs will want ANSI-only C keywords	203	* In non-ANSI C environments, new programs will want ANSI-only C keywords
204	* deleted from the program and old programs will want them left alone.	204	* deleted from the program and old programs will want them left alone.
205	* When using a compiler other than gcc, programs using the ANSI C keywords	205	* When using a compiler other than gcc, programs using the ANSI C keywords
206	* const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.	206	* const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
207	* When using "gcc -traditional", we assume that this is the intent; if	207	* When using "gcc -traditional", we assume that this is the intent; if
208	* __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.	208	* __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
209	*/	209	*/
210	#ifndef NO_ANSI_KEYWORDS	210	#ifndef NO_ANSI_KEYWORDS
211	#define const /* delete ANSI C keywords */	211	#define const /* delete ANSI C keywords */
212	#define inline	212	#define inline
213	#define signed	213	#define signed
214	#define volatile	214	#define volatile
215	#endif /* !NO_ANSI_KEYWORDS */	215	#endif /* !NO_ANSI_KEYWORDS */
216	#endif /* !__CC_SUPPORTS___INLINE */	216	#endif /* !__CC_SUPPORTS___INLINE */
217	#endif /* !(__STDC__ \|\| __cplusplus) */	217	#endif /* !(__STDC__ \|\| __cplusplus) */
218		218
219	/*	219	/*
220	* Compiler-dependent macros to help declare dead (non-returning) and	220	* Compiler-dependent macros to help declare dead (non-returning) and
221	* pure (no side effects) functions, and unused variables. They are	221	* pure (no side effects) functions, and unused variables. They are
222	* null except for versions of gcc that are known to support the features	222	* null except for versions of gcc that are known to support the features
223	* properly (old versions of gcc-2 supported the dead and pure features	223	* properly (old versions of gcc-2 supported the dead and pure features
224	* in a different (wrong) way). If we do not provide an implementation	224	* in a different (wrong) way). If we do not provide an implementation
225	* for a given compiler, let the compile fail if it is told to use	225	* for a given compiler, let the compile fail if it is told to use
226	* a feature that we cannot live without.	226	* a feature that we cannot live without.
227	*/	227	*/
228	#ifdef lint	228	#ifdef lint
229	#define __dead2	229	#define __dead2
230	#define __pure2	230	#define __pure2
231	#define __unused	231	#define __unused
232	#define __packed	232	#define __packed
233	#define __aligned(x)	233	#define __aligned(x)
234	#define __alloc_align(x)	234	#define __alloc_align(x)
235	#define __alloc_size(x)	235	#define __alloc_size(x)
236	#define __section(x)	236	#define __section(x)
237	#define __weak_symbol	237	#define __weak_symbol
238	#else	238	#else
239	#define __weak_symbol __attribute__((__weak__))	239	#define __weak_symbol __attribute__((__weak__))
240	#if !__GNUC_PREREQ__(2, 5) && !defined(__INTEL_COMPILER)	240	#if !__GNUC_PREREQ__(2, 5) && !defined(__INTEL_COMPILER)
241	#define __dead2	241	#define __dead2
242	#define __pure2	242	#define __pure2
243	#define __unused	243	#define __unused
244	#endif	244	#endif
245	#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7 && !defined(__INTEL_COMPILER)	245	#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7 && !defined(__INTEL_COMPILER)
246	#define __dead2 __attribute__((__noreturn__))	246	#define __dead2 __attribute__((__noreturn__))
247	#define __pure2 __attribute__((__const__))	247	#define __pure2 __attribute__((__const__))
248	#define __unused	248	#define __unused
249	/* XXX Find out what to do for __packed, __aligned and __section */	249	/* XXX Find out what to do for __packed, __aligned and __section */
250	#endif	250	#endif
251	#if __GNUC_PREREQ__(2, 7) \|\| defined(__INTEL_COMPILER)	251	#if __GNUC_PREREQ__(2, 7) \|\| defined(__INTEL_COMPILER)
252	#define __dead2 __attribute__((__noreturn__))	252	#define __dead2 __attribute__((__noreturn__))
253	#define __pure2 __attribute__((__const__))	253	#define __pure2 __attribute__((__const__))
254	#define __unused __attribute__((__unused__))	254	#define __unused __attribute__((__unused__))
255	#define __used __attribute__((__used__))	255	#define __used __attribute__((__used__))
256	#define __packed __attribute__((__packed__))	256	#define __packed __attribute__((__packed__))
257	#define __aligned(x) __attribute__((__aligned__(x)))	257	#define __aligned(x) __attribute__((__aligned__(x)))
258	#define __section(x) __attribute__((__section__(x)))	258	#define __section(x) __attribute__((__section__(x)))
259	#endif	259	#endif
260	#if __GNUC_PREREQ__(4, 3) \|\| __has_attribute(__alloc_size__)	260	#if __GNUC_PREREQ__(4, 3) \|\| __has_attribute(__alloc_size__)
261	#define __alloc_size(x) __attribute__((__alloc_size__(x)))	261	#define __alloc_size(x) __attribute__((__alloc_size__(x)))
262	#else	262	#else
263	#define __alloc_size(x)	263	#define __alloc_size(x)
264	#endif	264	#endif
265	#if __GNUC_PREREQ__(4, 9) \|\| __has_attribute(__alloc_align__)	265	#if __GNUC_PREREQ__(4, 9) \|\| __has_attribute(__alloc_align__)
266	#define __alloc_align(x) __attribute__((__alloc_align__(x)))	266	#define __alloc_align(x) __attribute__((__alloc_align__(x)))
267	#else	267	#else
268	#define __alloc_align(x)	268	#define __alloc_align(x)
269	#endif	269	#endif
270	#endif /* lint */	270	#endif /* lint */
271		271
272	#if !__GNUC_PREREQ__(2, 95)	272	#if !__GNUC_PREREQ__(2, 95)
273	#define __alignof(x) __offsetof(struct { char __a; x __b; }, __b)	273	#define __alignof(x) __offsetof(struct { char __a; x __b; }, __b)
274	#endif	274	#endif
275		275
276	/*	276	/*
277	* Keywords added in C11.	277	* Keywords added in C11.
278	*/	278	*/
279		279
280	#if !defined(__STDC_VERSION__) \|\| __STDC_VERSION__ < 201112L \|\| defined(lint)	280	#if !defined(__STDC_VERSION__) \|\| __STDC_VERSION__ < 201112L \|\| defined(lint)
281		281
282	#if !__has_extension(c_alignas)	282	#if !__has_extension(c_alignas)
283	#if (defined(__cplusplus) && __cplusplus >= 201103L) \|\| \	283	#if (defined(__cplusplus) && __cplusplus >= 201103L) \|\| \
284	__has_extension(cxx_alignas)	284	__has_extension(cxx_alignas)
285	#define _Alignas(x) alignas(x)	285	#define _Alignas(x) alignas(x)
286	#else	286	#else
287	/* XXX: Only emulates _Alignas(constant-expression); not _Alignas(type-name). */	287	/* XXX: Only emulates _Alignas(constant-expression); not _Alignas(type-name). */
288	#define _Alignas(x) __aligned(x)	288	#define _Alignas(x) __aligned(x)
289	#endif	289	#endif
290	#endif	290	#endif
291		291
292	#if defined(__cplusplus) && __cplusplus >= 201103L	292	#if defined(__cplusplus) && __cplusplus >= 201103L
293	#define _Alignof(x) alignof(x)	293	#define _Alignof(x) alignof(x)
294	#else	294	#else
295	#define _Alignof(x) __alignof(x)	295	#define _Alignof(x) __alignof(x)
296	#endif	296	#endif
297		297
298	#if !__has_extension(c_atomic) && !__has_extension(cxx_atomic)	298	#if !__has_extension(c_atomic) && !__has_extension(cxx_atomic)
299	/*	299	/*
300	* No native support for _Atomic(). Place object in structure to prevent	300	* No native support for _Atomic(). Place object in structure to prevent
301	* most forms of direct non-atomic access.	301	* most forms of direct non-atomic access.
302	*/	302	*/
303	#define _Atomic(T) struct { T volatile __val; }	303	#define _Atomic(T) struct { T volatile __val; }
304	#endif	304	#endif
305		305
306	#if defined(__cplusplus) && __cplusplus >= 201103L	306	#if defined(__cplusplus) && __cplusplus >= 201103L
307	#define _Noreturn [[noreturn]]	307	#define _Noreturn [[noreturn]]
308	#else	308	#else
309	#define _Noreturn __dead2	309	#define _Noreturn __dead2
310	#endif	310	#endif
311		311
312	#if !__has_extension(c_static_assert)	312	#if !__has_extension(c_static_assert)
313	#if (defined(__cplusplus) && __cplusplus >= 201103L) \|\| \	313	#if (defined(__cplusplus) && __cplusplus >= 201103L) \|\| \
314	__has_extension(cxx_static_assert)	314	__has_extension(cxx_static_assert)
315	#define _Static_assert(x, y) static_assert(x, y)	315	#define _Static_assert(x, y) static_assert(x, y)
316	#elif __GNUC_PREREQ__(4,6)	316	#elif __GNUC_PREREQ__(4,6)
317	/* Nothing, gcc 4.6 and higher has _Static_assert built-in */	317	/* Nothing, gcc 4.6 and higher has _Static_assert built-in */
318	#elif defined(__COUNTER__)	318	#elif defined(__COUNTER__)
319	#define _Static_assert(x, y) __Static_assert(x, __COUNTER__)	319	#define _Static_assert(x, y) __Static_assert(x, __COUNTER__)
320	#define __Static_assert(x, y) ___Static_assert(x, y)	320	#define __Static_assert(x, y) ___Static_assert(x, y)
321	#define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1] \	321	#define ___Static_assert(x, y) typedef char __assert_ ## y[(x) ? 1 : -1] \
322	__unused	322	__unused
323	#else	323	#else
324	#define _Static_assert(x, y) struct __hack	324	#define _Static_assert(x, y) struct __hack
325	#endif	325	#endif
326	#endif	326	#endif
327		327
328	#if !__has_extension(c_thread_local)	328	#if !__has_extension(c_thread_local)
329	/*	329	/*
330	* XXX: Some compilers (Clang 3.3, GCC 4.7) falsely announce C++11 mode	330	* XXX: Some compilers (Clang 3.3, GCC 4.7) falsely announce C++11 mode
331	* without actually supporting the thread_local keyword. Don't check for	331	* without actually supporting the thread_local keyword. Don't check for
332	* the presence of C++11 when defining _Thread_local.	332	* the presence of C++11 when defining _Thread_local.
333	*/	333	*/
334	#if /* (defined(__cplusplus) && __cplusplus >= 201103L) \|\| */ \	334	#if /* (defined(__cplusplus) && __cplusplus >= 201103L) \|\| */ \
335	__has_extension(cxx_thread_local)	335	__has_extension(cxx_thread_local)
336	#define _Thread_local thread_local	336	#define _Thread_local thread_local
337	#else	337	#else
338	#define _Thread_local __thread	338	#define _Thread_local __thread
339	#endif	339	#endif
340	#endif	340	#endif
341		341
342	#endif /* __STDC_VERSION__ \|\| __STDC_VERSION__ < 201112L */	342	#endif /* __STDC_VERSION__ \|\| __STDC_VERSION__ < 201112L */
343		343
344	/*	344	/*
345	* Emulation of C11 _Generic(). Unlike the previously defined C11	345	* Emulation of C11 _Generic(). Unlike the previously defined C11
346	* keywords, it is not possible to implement this using exactly the same	346	* keywords, it is not possible to implement this using exactly the same
347	* syntax. Therefore implement something similar under the name	347	* syntax. Therefore implement something similar under the name
348	* __generic(). Unlike _Generic(), this macro can only distinguish	348	* __generic(). Unlike _Generic(), this macro can only distinguish
349	* between a single type, so it requires nested invocations to	349	* between a single type, so it requires nested invocations to
350	* distinguish multiple cases.	350	* distinguish multiple cases.
351	*/	351	*/
352		352
353	#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \|\| \	353	#if (defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L) \|\| \
354	__has_extension(c_generic_selections)	354	__has_extension(c_generic_selections)
355	#define __generic(expr, t, yes, no) \	355	#define __generic(expr, t, yes, no) \
356	_Generic(expr, t: yes, default: no)	356	_Generic(expr, t: yes, default: no)
357	#elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus)	357	#elif __GNUC_PREREQ__(3, 1) && !defined(__cplusplus)
358	#define __generic(expr, t, yes, no) \	358	#define __generic(expr, t, yes, no) \
359	__builtin_choose_expr( \	359	__builtin_choose_expr( \
360	__builtin_types_compatible_p(__typeof(expr), t), yes, no)	360	__builtin_types_compatible_p(__typeof(expr), t), yes, no)
361	#endif	361	#endif
362		362
363	#if __GNUC_PREREQ__(2, 96)	363	#if __GNUC_PREREQ__(2, 96)
364	#define __malloc_like __attribute__((__malloc__))	364	#define __malloc_like __attribute__((__malloc__))
365	#define __pure __attribute__((__pure__))	365	#define __pure __attribute__((__pure__))
366	#else	366	#else
367	#define __malloc_like	367	#define __malloc_like
368	#define __pure	368	#define __pure
369	#endif	369	#endif
370		370
371	#if __GNUC_PREREQ__(3, 1) \|\| (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)	371	#if __GNUC_PREREQ__(3, 1) \|\| (defined(__INTEL_COMPILER) && __INTEL_COMPILER >= 800)
372	#define __always_inline __attribute__((__always_inline__))	372	#define __always_inline __attribute__((__always_inline__))
373	#else	373	#else
374	#define __always_inline	374	#define __always_inline
375	#endif	375	#endif
376		376
377	#if __GNUC_PREREQ__(3, 1)	377	#if __GNUC_PREREQ__(3, 1)
378	#define __noinline __attribute__ ((__noinline__))	378	#define __noinline __attribute__ ((__noinline__))
379	#else	379	#else
380	#define __noinline	380	#define __noinline
381	#endif	381	#endif
382		382
383	#if __GNUC_PREREQ__(3, 3)	383	#if __GNUC_PREREQ__(3, 3)
384	#define __nonnull(x) __attribute__((__nonnull__(x)))	384	#define __nonnull(x) __attribute__((__nonnull__(x)))
385	#define __nonnull_all __attribute__((__nonnull__))	385	#define __nonnull_all __attribute__((__nonnull__))
386	#else	386	#else
387	#define __nonnull(x)	387	#define __nonnull(x)
388	#define __nonnull_all	388	#define __nonnull_all
389	#endif	389	#endif
390		390
391	#if __GNUC_PREREQ__(3, 4)	391	#if __GNUC_PREREQ__(3, 4)
392	#define __fastcall __attribute__((__fastcall__))	392	#define __fastcall __attribute__((__fastcall__))
393	#define __result_use_check __attribute__((__warn_unused_result__))	393	#define __result_use_check __attribute__((__warn_unused_result__))
394	#else	394	#else
395	#define __fastcall	395	#define __fastcall
396	#define __result_use_check	396	#define __result_use_check
397	#endif	397	#endif
398		398
399	#if __GNUC_PREREQ__(4, 1)	399	#if __GNUC_PREREQ__(4, 1)
400	#define __returns_twice __attribute__((__returns_twice__))	400	#define __returns_twice __attribute__((__returns_twice__))
401	#else	401	#else
402	#define __returns_twice	402	#define __returns_twice
403	#endif	403	#endif
404		404
405	#if __GNUC_PREREQ__(4, 6) \|\| __has_builtin(__builtin_unreachable)	405	#if __GNUC_PREREQ__(4, 6) \|\| __has_builtin(__builtin_unreachable)
406	#define __unreachable() __builtin_unreachable()	406	#define __unreachable() __builtin_unreachable()
407	#else	407	#else
408	#define __unreachable() ((void)0)	408	#define __unreachable() ((void)0)
409	#endif	409	#endif
410		410
411	/* XXX: should use `#if __STDC_VERSION__ < 199901'. */	411	/* XXX: should use `#if __STDC_VERSION__ < 199901'. */
412	#if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)	412	#if !__GNUC_PREREQ__(2, 7) && !defined(__INTEL_COMPILER)
413	#define __func__ NULL	413	#define __func__ NULL
414	#endif	414	#endif
415		415
416	/*	416	/*
417	* GCC 2.95 provides `__restrict' as an extension to C90 to support the	417	* GCC 2.95 provides `__restrict' as an extension to C90 to support the
418	* C99-specific `restrict' type qualifier. We happen to use `__restrict' as	418	* C99-specific `restrict' type qualifier. We happen to use `__restrict' as
419	* a way to define the `restrict' type qualifier without disturbing older	419	* a way to define the `restrict' type qualifier without disturbing older
420	* software that is unaware of C99 keywords.	420	* software that is unaware of C99 keywords.
421	*/	421	*/
422	#if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)	422	#if !(__GNUC__ == 2 && __GNUC_MINOR__ == 95)
423	#if !defined(__STDC_VERSION__) \|\| __STDC_VERSION__ < 199901 \|\| defined(lint)	423	#if !defined(__STDC_VERSION__) \|\| __STDC_VERSION__ < 199901 \|\| defined(lint)
424	#define __restrict	424	#define __restrict
425	#else	425	#else
426	#define __restrict restrict	426	#define __restrict restrict
427	#endif	427	#endif
428	#endif	428	#endif
429		429
430	/*	430	/*
431	* GNU C version 2.96 adds explicit branch prediction so that	431	* GNU C version 2.96 adds explicit branch prediction so that
432	* the CPU back-end can hint the processor and also so that	432	* the CPU back-end can hint the processor and also so that
433	* code blocks can be reordered such that the predicted path	433	* code blocks can be reordered such that the predicted path
434	* sees a more linear flow, thus improving cache behavior, etc.	434	* sees a more linear flow, thus improving cache behavior, etc.
435	*	435	*
436	* The following two macros provide us with a way to utilize this	436	* The following two macros provide us with a way to utilize this
437	* compiler feature. Use __predict_true() if you expect the expression	437	* compiler feature. Use __predict_true() if you expect the expression
438	* to evaluate to true, and __predict_false() if you expect the	438	* to evaluate to true, and __predict_false() if you expect the
439	* expression to evaluate to false.	439	* expression to evaluate to false.
440	*	440	*
441	* A few notes about usage:	441	* A few notes about usage:
442	*	442	*
443	* * Generally, __predict_false() error condition checks (unless	443	* * Generally, __predict_false() error condition checks (unless
444	* you have some _strong_ reason to do otherwise, in which case	444	* you have some _strong_ reason to do otherwise, in which case
445	* document it), and/or __predict_true() `no-error' condition	445	* document it), and/or __predict_true() `no-error' condition
446	* checks, assuming you want to optimize for the no-error case.	446	* checks, assuming you want to optimize for the no-error case.
447	*	447	*
448	* * Other than that, if you don't know the likelihood of a test	448	* * Other than that, if you don't know the likelihood of a test
449	* succeeding from empirical or other `hard' evidence, don't	449	* succeeding from empirical or other `hard' evidence, don't
450	* make predictions.	450	* make predictions.
451	*	451	*
452	* * These are meant to be used in places that are run `a lot'.	452	* * These are meant to be used in places that are run `a lot'.
453	* It is wasteful to make predictions in code that is run	453	* It is wasteful to make predictions in code that is run
454	* seldomly (e.g. at subsystem initialization time) as the	454	* seldomly (e.g. at subsystem initialization time) as the
455	* basic block reordering that this affects can often generate	455	* basic block reordering that this affects can often generate
456	* larger code.	456	* larger code.
457	*/	457	*/
458	#if __GNUC_PREREQ__(2, 96)	458	#if __GNUC_PREREQ__(2, 96)
459	#define __predict_true(exp) __builtin_expect((exp), 1)	459	#define __predict_true(exp) __builtin_expect((exp), 1)
460	#define __predict_false(exp) __builtin_expect((exp), 0)	460	#define __predict_false(exp) __builtin_expect((exp), 0)
461	#else	461	#else
462	#define __predict_true(exp) (exp)	462	#define __predict_true(exp) (exp)
463	#define __predict_false(exp) (exp)	463	#define __predict_false(exp) (exp)
464	#endif	464	#endif
465		465
466	#if __GNUC_PREREQ__(4, 0)	466	#if __GNUC_PREREQ__(4, 0)
467	#define __sentinel __attribute__((__sentinel__))	467	#define __sentinel __attribute__((__sentinel__))
468	#define __exported __attribute__((__visibility__("default")))	468	#define __exported __attribute__((__visibility__("default")))
469	#define __hidden __attribute__((__visibility__("hidden")))	469	#define __hidden __attribute__((__visibility__("hidden")))
470	#else	470	#else
471	#define __sentinel	471	#define __sentinel
472	#define __exported	472	#define __exported
473	#define __hidden	473	#define __hidden
474	#endif	474	#endif
475		475
476	#define __offsetof(type, field) offsetof(type, field)	476	#define __offsetof(type, field) offsetof(type, field)
477	#define __rangeof(type, start, end) \	477	#define __rangeof(type, start, end) \
478	(__offsetof(type, end) - __offsetof(type, start))	478	(__offsetof(type, end) - __offsetof(type, start))
479		479
480	/*	480	/*
481	* Given the pointer x to the member m of the struct s, return	481	* Given the pointer x to the member m of the struct s, return
482	* a pointer to the containing structure. When using GCC, we first	482	* a pointer to the containing structure. When using GCC, we first
483	* assign pointer x to a local variable, to check that its type is	483	* assign pointer x to a local variable, to check that its type is
484	* compatible with member m.	484	* compatible with member m.
485	*/	485	*/
486	#if __GNUC_PREREQ__(3, 1)	486	#if __GNUC_PREREQ__(3, 1)
487	#define __containerof(x, s, m) ({ \	487	#define __containerof(x, s, m) ({ \
488	const volatile __typeof(((s )0)->m) __x = (x); \	488	const volatile __typeof(((s )0)->m) __x = (x); \
489	__DEQUALIFY(s , (const volatile char )__x - __offsetof(s, m));\	489	__DEQUALIFY(s , (const volatile char )__x - __offsetof(s, m));\
490	})	490	})
491	#else	491	#else
492	#define __containerof(x, s, m) \	492	#define __containerof(x, s, m) \
493	__DEQUALIFY(s , (const volatile char )(x) - __offsetof(s, m))	493	__DEQUALIFY(s , (const volatile char )(x) - __offsetof(s, m))
494	#endif	494	#endif
495		495
496	/*	496	/*
497	* Compiler-dependent macros to declare that functions take printf-like	497	* Compiler-dependent macros to declare that functions take printf-like
498	* or scanf-like arguments. They are null except for versions of gcc	498	* or scanf-like arguments. They are null except for versions of gcc
499	* that are known to support the features properly (old versions of gcc-2	499	* that are known to support the features properly (old versions of gcc-2
500	* didn't permit keeping the keywords out of the application namespace).	500	* didn't permit keeping the keywords out of the application namespace).

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(root)/contrib/sdk/sources/newlib/libc/include/sys/cdefs.h – Rev 6109 → 6536