111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* $NetBSD: cdefs.h,v 1.58 2004/12/11 05:59:00 christos Exp $ */ 211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Copyright (c) 1991, 1993 511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * The Regents of the University of California. All rights reserved. 611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * This code is derived from software contributed to Berkeley by 811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Berkeley Software Design, Inc. 911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Redistribution and use in source and binary forms, with or without 1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * modification, are permitted provided that the following conditions 1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * are met: 1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 1. Redistributions of source code must retain the above copyright 1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * notice, this list of conditions and the following disclaimer. 1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 2. Redistributions in binary form must reproduce the above copyright 1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * notice, this list of conditions and the following disclaimer in the 1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * documentation and/or other materials provided with the distribution. 1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 3. Neither the name of the University nor the names of its contributors 1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * may be used to endorse or promote products derived from this software 2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * without specific prior written permission. 2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 2211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * SUCH DAMAGE. 3311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 3411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 3511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 3611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef _SYS_CDEFS_H_ 3811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _SYS_CDEFS_H_ 3911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 4111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Testing against Clang-specific extensions. 4211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 4311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __has_extension 4511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __has_extension __has_feature 4611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 4711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __has_feature 4811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __has_feature(x) 0 4911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 5011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __has_include 5111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __has_include(x) 0 5211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 5311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __has_builtin 5411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __has_builtin(x) 0 5511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 5611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 5911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Macro to test if we're using a GNU C compiler of a specific vintage 6011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * or later, for e.g. features that appeared in a particular version 6111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * of GNU C. Usage: 6211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 6311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * #if __GNUC_PREREQ(major, minor) 6411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * ...cool feature... 6511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * #else 6611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * ...delete feature... 6711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * #endif 6811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 6911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifdef __GNUC__ 7011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __GNUC_PREREQ(x, y) \ 7111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ((__GNUC__ == (x) && __GNUC_MINOR__ >= (y)) || \ 7211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert (__GNUC__ > (x))) 7311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 7411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __GNUC_PREREQ(x, y) 0 7511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 7611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 7711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <sys/cdefs_elf.h> 7811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 7911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(__cplusplus) 8011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BEGIN_DECLS extern "C" { 8111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __END_DECLS } 8211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __static_cast(x,y) static_cast<x>(y) 8311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 8411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BEGIN_DECLS 8511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __END_DECLS 8611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __static_cast(x,y) (x)y 8711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 8811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 8911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 9011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * The __CONCAT macro is used to concatenate parts of symbol names, e.g. 9111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo. 9211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * The __CONCAT macro is a bit tricky -- make sure you don't put spaces 9311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * in between its arguments. __CONCAT can also concatenate double-quoted 9411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * strings produced by the __STRING macro, but this only works with ANSI C. 9511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 9611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 9711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define ___STRING(x) __STRING(x) 9811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define ___CONCAT(x,y) __CONCAT(x,y) 9911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(__STDC__) || defined(__cplusplus) 10111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __P(protos) protos /* full-blown ANSI C */ 10211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __CONCAT(x,y) x ## y 10311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __STRING(x) #x 10411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 10511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __const const /* define reserved names to standard */ 10611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __signed signed 10711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __volatile volatile 10811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(__cplusplus) 10911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __inline inline /* convert to C++ keyword */ 11011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 11111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if !defined(__GNUC__) && !defined(__lint__) 11211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __inline /* delete GCC keyword */ 11311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* !__GNUC__ && !__lint__ */ 11411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* !__cplusplus */ 11511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 11611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else /* !(__STDC__ || __cplusplus) */ 11711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __P(protos) () /* traditional C preprocessor */ 11811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __CONCAT(x,y) x/**/y 11911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __STRING(x) "x" 12011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 12111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __GNUC__ 12211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __const /* delete pseudo-ANSI C keywords */ 12311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __inline 12411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __signed 12511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __volatile 12611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* !__GNUC__ */ 12711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 12811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 12911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * In non-ANSI C environments, new programs will want ANSI-only C keywords 13011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * deleted from the program and old programs will want them left alone. 13111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Programs using the ANSI C keywords const, inline etc. as normal 13211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * identifiers should define -DNO_ANSI_KEYWORDS. 13311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 13411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef NO_ANSI_KEYWORDS 13511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define const __const /* convert ANSI C keywords */ 13611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define inline __inline 13711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define signed __signed 13811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define volatile __volatile 13911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* !NO_ANSI_KEYWORDS */ 14011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* !(__STDC__ || __cplusplus) */ 14111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 14211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 14311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Used for internal auditing of the NetBSD source tree. 14411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 14511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifdef __AUDIT__ 14611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __aconst __const 14711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 14811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __aconst 14911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 15011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 15111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 15211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * The following macro is used to remove const cast-away warnings 15311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * from gcc -Wcast-qual; it should be used with caution because it 15411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * can hide valid errors; in particular most valid uses are in 15511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * situations where the API requires it, not to cast away string 15611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * constants. We don't use *intptr_t on purpose here and we are 15711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * explicit about unsigned long so that we don't have additional 15811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * dependencies. 15911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 16011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __UNCONST(a) ((void *)(unsigned long)(const void *)(a)) 16111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 16211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 16311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * GCC2 provides __extension__ to suppress warnings for various GNU C 16411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * language extensions under "-ansi -pedantic". 16511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 16611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if !__GNUC_PREREQ(2, 0) 16711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __extension__ /* delete __extension__ if non-gcc or gcc1 */ 16811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 16911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 17011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 17111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * GCC1 and some versions of GCC2 declare dead (non-returning) and 17211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * pure (no side effects) functions using "volatile" and "const"; 17311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * unfortunately, these then cause warnings under "-ansi -pedantic". 17411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * GCC2 uses a new, peculiar __attribute__((attrs)) style. All of 17511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * these work for GNU C++ (modulo a slight glitch in the C++ grammar 17611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * in the distribution version of 2.5.5). 17711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 17811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if !__GNUC_PREREQ(2, 5) 17911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __attribute__(x) /* delete __attribute__ if non-gcc or gcc1 */ 18011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(__GNUC__) && !defined(__STRICT_ANSI__) 18111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __dead __volatile 18211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __pure __const 18311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 18411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 18511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 18611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* Delete pseudo-keywords wherever they are not available or needed. */ 18711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __dead 18811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __dead 18911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __pure 19011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 19111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 19211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(2, 7) 19311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __unused __attribute__((__unused__)) 19411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 19511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __unused /* delete */ 19611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 19711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 19811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __pure2 __attribute__((__const__)) /* Android-added: used by FreeBSD libm */ 19911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 20011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(3, 1) 20111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __used __attribute__((__used__)) 20211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 20311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __used /* delete */ 20411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 20511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 20611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(2, 7) 20711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __packed __attribute__((__packed__)) 20811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __aligned(x) __attribute__((__aligned__(x))) 20911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __section(x) __attribute__((__section__(x))) 21011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif defined(__lint__) 21111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __packed /* delete */ 21211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __aligned(x) /* delete */ 21311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __section(x) /* delete */ 21411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 21511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __packed error: no __packed for this compiler 21611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __aligned(x) error: no __aligned for this compiler 21711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __section(x) error: no __section for this compiler 21811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 21911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 22011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if !__GNUC_PREREQ(2, 8) 22111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __extension__ 22211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 22311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 22411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(2, 8) 22511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __statement(x) __extension__(x) 22611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif defined(lint) 22711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __statement(x) (0) 22811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 22911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __statement(x) (x) 23011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 23111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 23211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __nonnull(args) __attribute__((__nonnull__ args)) 23311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 23411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __printflike(x, y) __attribute__((__format__(printf, x, y))) __nonnull((x)) 23511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __scanflike(x, y) __attribute__((__format__(scanf, x, y))) __nonnull((x)) 23611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 23711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 23811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * C99 defines the restrict type qualifier keyword, which was made available 23911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * in GCC 2.92. 24011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 24111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(__STDC__VERSION__) && __STDC_VERSION__ >= 199901L 24211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __restrict restrict 24311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 24411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if !__GNUC_PREREQ(2, 92) 24511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __restrict /* delete __restrict when not supported */ 24611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 24711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 24811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 24911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 25011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * C99 defines __func__ predefined identifier, which was made available 25111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * in GCC 2.95. 25211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 25311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if !defined(__STDC_VERSION__) || !(__STDC_VERSION__ >= 199901L) 25411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(2, 6) 25511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __func__ __PRETTY_FUNCTION__ 25611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif __GNUC_PREREQ(2, 4) 25711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __func__ __FUNCTION__ 25811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 25911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __func__ "" 26011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 26111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* !(__STDC_VERSION__ >= 199901L) */ 26211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 26311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(_KERNEL) 26411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(NO_KERNEL_RCSIDS) 26511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#undef __KERNEL_RCSID 26611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __KERNEL_RCSID(_n, _s) /* nothing */ 26711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* NO_KERNEL_RCSIDS */ 26811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* _KERNEL */ 26911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 27011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if !defined(_STANDALONE) && !defined(_KERNEL) 27111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifdef __GNUC__ 27211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __RENAME(x) ___RENAME(x) 27311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 27411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifdef __lint__ 27511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __RENAME(x) __symbolrename(x) 27611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 27711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#error "No function renaming possible" 27811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* __lint__ */ 27911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* __GNUC__ */ 28011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else /* _STANDALONE || _KERNEL */ 28111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __RENAME(x) no renaming in kernel or standalone environment 28211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 28311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 28411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 28511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * A barrier to stop the optimizer from moving code or assume live 28611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * register values. This is gcc specific, the version is more or less 28711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * arbitrary, might work with older compilers. 28811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 28911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(2, 95) 29011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __insn_barrier() __asm __volatile("":::"memory") 29111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 29211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __insn_barrier() /* */ 29311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 29411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 29511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 29611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * GNU C version 2.96 adds explicit branch prediction so that 29711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * the CPU back-end can hint the processor and also so that 29811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * code blocks can be reordered such that the predicted path 29911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * sees a more linear flow, thus improving cache behavior, etc. 30011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 30111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * The following two macros provide us with a way to use this 30211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * compiler feature. Use __predict_true() if you expect the expression 30311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * to evaluate to true, and __predict_false() if you expect the 30411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * expression to evaluate to false. 30511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 30611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * A few notes about usage: 30711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 30811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * * Generally, __predict_false() error condition checks (unless 30911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * you have some _strong_ reason to do otherwise, in which case 31011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * document it), and/or __predict_true() `no-error' condition 31111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * checks, assuming you want to optimize for the no-error case. 31211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 31311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * * Other than that, if you don't know the likelihood of a test 31411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * succeeding from empirical or other `hard' evidence, don't 31511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * make predictions. 31611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 31711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * * These are meant to be used in places that are run `a lot'. 31811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * It is wasteful to make predictions in code that is run 31911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * seldomly (e.g. at subsystem initialization time) as the 32011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * basic block reordering that this affects can often generate 32111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * larger code. 32211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 32311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(2, 96) 32411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __predict_true(exp) __builtin_expect((exp) != 0, 1) 32511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __predict_false(exp) __builtin_expect((exp) != 0, 0) 32611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 32711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __predict_true(exp) (exp) 32811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __predict_false(exp) (exp) 32911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 33011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 33111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(2, 96) 33211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __noreturn __attribute__((__noreturn__)) 33311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __mallocfunc __attribute__((malloc)) 33411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __purefunc __attribute__((pure)) 33511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 33611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __noreturn 33711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __mallocfunc 33811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __purefunc 33911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 34011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 34111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(3, 1) 34211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __always_inline __attribute__((__always_inline__)) 34311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 34411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __always_inline 34511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 34611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 34711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(3, 4) 34811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __wur __attribute__((__warn_unused_result__)) 34911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 35011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __wur 35111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 35211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 35311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __GNUC_PREREQ(4, 3) 35411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __errordecl(name, msg) extern void name(void) __attribute__((__error__(msg))) 35511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __warnattr(msg) __attribute__((__warning__(msg))) 35611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 35711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __errordecl(name, msg) extern void name(void) 35811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __warnattr(msg) 35911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 36011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 36111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 36211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Macros for manipulating "link sets". Link sets are arrays of pointers 36311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * to objects, which are gathered up by the linker. 36411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 36511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Object format-specific code has provided us with the following macros: 36611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 36711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_add_text(set, sym) 36811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Add a reference to the .text symbol `sym' to `set'. 36911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 37011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_add_rodata(set, sym) 37111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Add a reference to the .rodata symbol `sym' to `set'. 37211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 37311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_add_data(set, sym) 37411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Add a reference to the .data symbol `sym' to `set'. 37511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 37611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_add_bss(set, sym) 37711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Add a reference to the .bss symbol `sym' to `set'. 37811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 37911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_decl(set, ptype) 38011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Provide an extern declaration of the set `set', which 38111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * contains an array of the pointer type `ptype'. This 38211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * macro must be used by any code which wishes to reference 38311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * the elements of a link set. 38411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 38511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_start(set) 38611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * This points to the first slot in the link set. 38711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 38811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_end(set) 38911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * This points to the (non-existent) slot after the last 39011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * entry in the link set. 39111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 39211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_count(set) 39311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Count the number of entries in link set `set'. 39411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 39511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * In addition, we provide the following macros for accessing link sets: 39611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 39711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_foreach(pvar, set) 39811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Iterate over the link set `set'. Because a link set is 39911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * an array of pointers, pvar must be declared as "type **pvar", 40011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * and the actual entry accessed as "*pvar". 40111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 40211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * __link_set_entry(set, idx) 40311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Access the link set entry at index `idx' from set `set'. 40411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 40511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __link_set_foreach(pvar, set) \ 40611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert for (pvar = __link_set_start(set); pvar < __link_set_end(set); pvar++) 40711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 40811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __link_set_entry(set, idx) (__link_set_begin(set)[idx]) 40911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 41011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 41111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Some of the FreeBSD sources used in Bionic need this. 41211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Originally, this is used to embed the rcs versions of each source file 41311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * in the generated binary. We certainly don't want this in Bionic. 41411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 41511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __FBSDID(s) /* nothing */ 41611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 41711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/*- 41811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * The following definitions are an extension of the behavior originally 41911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * implemented in <sys/_posix.h>, but with a different level of granularity. 42011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * POSIX.1 requires that the macros we test be defined before any standard 42111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * header file is included. 42211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 42311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Here's a quick run-down of the versions: 42411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * defined(_POSIX_SOURCE) 1003.1-1988 42511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * _POSIX_C_SOURCE == 1 1003.1-1990 42611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * _POSIX_C_SOURCE == 2 1003.2-1992 C Language Binding Option 42711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * _POSIX_C_SOURCE == 199309 1003.1b-1993 42811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * _POSIX_C_SOURCE == 199506 1003.1c-1995, 1003.1i-1995, 42911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * and the omnibus ISO/IEC 9945-1: 1996 43011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * _POSIX_C_SOURCE == 200112 1003.1-2001 43111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * _POSIX_C_SOURCE == 200809 1003.1-2008 43211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 43311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * In addition, the X/Open Portability Guide, which is now the Single UNIX 43411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Specification, defines a feature-test macro which indicates the version of 43511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * that specification, and which subsumes _POSIX_C_SOURCE. 43611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 43711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Our macros begin with two underscores to avoid namespace screwage. 43811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 43911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 44011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* Deal with IEEE Std. 1003.1-1990, in which _POSIX_C_SOURCE == 1. */ 44111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 1 44211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#undef _POSIX_C_SOURCE /* Probably illegal, but beyond caring now. */ 44311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _POSIX_C_SOURCE 199009 44411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 44511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 44611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* Deal with IEEE Std. 1003.2-1992, in which _POSIX_C_SOURCE == 2. */ 44711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(_POSIX_C_SOURCE) && _POSIX_C_SOURCE == 2 44811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#undef _POSIX_C_SOURCE 44911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _POSIX_C_SOURCE 199209 45011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 45111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 45211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* Deal with various X/Open Portability Guides and Single UNIX Spec. */ 45311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifdef _XOPEN_SOURCE 45411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _XOPEN_SOURCE - 0 >= 700 45511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __XSI_VISIBLE 700 45611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#undef _POSIX_C_SOURCE 45711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _POSIX_C_SOURCE 200809 45811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif _XOPEN_SOURCE - 0 >= 600 45911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __XSI_VISIBLE 600 46011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#undef _POSIX_C_SOURCE 46111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _POSIX_C_SOURCE 200112 46211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif _XOPEN_SOURCE - 0 >= 500 46311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __XSI_VISIBLE 500 46411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#undef _POSIX_C_SOURCE 46511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _POSIX_C_SOURCE 199506 46611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 46711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 46811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 46911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 47011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Deal with all versions of POSIX. The ordering relative to the tests above is 47111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * important. 47211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 47311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(_POSIX_SOURCE) && !defined(_POSIX_C_SOURCE) 47411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define _POSIX_C_SOURCE 198808 47511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 47611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifdef _POSIX_C_SOURCE 47711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _POSIX_C_SOURCE >= 200809 47811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 200809 47911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1999 48011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif _POSIX_C_SOURCE >= 200112 48111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 200112 48211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1999 48311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif _POSIX_C_SOURCE >= 199506 48411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 199506 48511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1990 48611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif _POSIX_C_SOURCE >= 199309 48711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 199309 48811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1990 48911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif _POSIX_C_SOURCE >= 199209 49011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 199209 49111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1990 49211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif _POSIX_C_SOURCE >= 199009 49311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 199009 49411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1990 49511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 49611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 198808 49711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 0 49811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* _POSIX_C_SOURCE */ 49911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 50011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/*- 50111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Deal with _ANSI_SOURCE: 50211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * If it is defined, and no other compilation environment is explicitly 50311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * requested, then define our internal feature-test macros to zero. This 50411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * makes no difference to the preprocessor (undefined symbols in preprocessing 50511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * expressions are defined to have value zero), but makes it more convenient for 50611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * a test program to print out the values. 50711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 50811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * If a program mistakenly defines _ANSI_SOURCE and some other macro such as 50911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * _POSIX_C_SOURCE, we will assume that it wants the broader compilation 51011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * environment (and in fact we will never get here). 51111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 51211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(_ANSI_SOURCE) /* Hide almost everything. */ 51311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 0 51411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __XSI_VISIBLE 0 51511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BSD_VISIBLE 0 51611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1990 51711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#elif defined(_C99_SOURCE) /* Localism to specify strict C99 env. */ 51811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 0 51911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __XSI_VISIBLE 0 52011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BSD_VISIBLE 0 52111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1999 52211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else /* Default environment: show everything. */ 52311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __POSIX_VISIBLE 200809 52411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __XSI_VISIBLE 700 52511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BSD_VISIBLE 1 52611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __ISO_C_VISIBLE 1999 52711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 52811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 52911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 53011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 53111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * Default values. 53211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 53311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __XPG_VISIBLE 53411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert# define __XPG_VISIBLE 700 53511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 53611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __POSIX_VISIBLE 53711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert# define __POSIX_VISIBLE 200809 53811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 53911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __ISO_C_VISIBLE 54011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert# define __ISO_C_VISIBLE 1999 54111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 54211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#ifndef __BSD_VISIBLE 54311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert# define __BSD_VISIBLE 1 54411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 54511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 54611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BIONIC__ 1 54711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <android/api-level.h> 54811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 54911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* glibc compatibility. */ 55011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if __LP64__ 55111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __WORDSIZE 64 55211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 55311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __WORDSIZE 32 55411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 55511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 55611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* 55711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * When _FORTIFY_SOURCE is defined, automatic bounds checking is 55811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * added to commonly used libc functions. If a buffer overrun is 55911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * detected, the program is safely aborted. 56011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * 56111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * See 56211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert * http://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html for details. 56311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 56411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(_FORTIFY_SOURCE) && _FORTIFY_SOURCE > 0 && defined(__OPTIMIZE__) && __OPTIMIZE__ > 0 56511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BIONIC_FORTIFY 1 56611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _FORTIFY_SOURCE == 2 56711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __bos(s) __builtin_object_size((s), 1) 56811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 56911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __bos(s) __builtin_object_size((s), 0) 57011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 57111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __bos0(s) __builtin_object_size((s), 0) 57211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 57311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BIONIC_FORTIFY_INLINE \ 57411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert extern __inline__ \ 57511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __attribute__ ((always_inline)) \ 57611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __attribute__ ((gnu_inline)) 57711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 57811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __BIONIC_FORTIFY_UNKNOWN_SIZE ((size_t) -1) 57911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 58011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert/* __NDK_FPABI__ or __NDK_FPABI_MATH__ are applied to APIs taking or returning float or 58111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert [long] double, to ensure even at the presence of -mhard-float (which implies 58211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert -mfloat-abi=hard), calling to 32-bit Android native APIs still follow -mfloat-abi=softfp. 58311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 58411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert __NDK_FPABI_MATH__ is applied to APIs in math.h. It normally equals to __NDK_FPABI__, 58511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert but allows use of customized libm.a compiled with -mhard-float by -D_NDK_MATH_NO_SOFTFP=1 58611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 58711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert NOTE: Disable for clang for now unless _NDK_MATH_NO_SOFTFP=1, because clang before 3.4 doesn't 58811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert allow change of calling convension for builtin and produces error message reads: 58911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 59011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert a.i:564:6: error: function declared 'aapcs' here was previously declared without calling convention 59111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert int sin(double d) __attribute__((pcs("aapcs"))); 59211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ^ 59311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert a.i:564:6: note: previous declaration is here 59411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert */ 59511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if defined(__ANDROID__) && !defined(__LP64__) && defined( __arm__) 59611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __NDK_FPABI__ __attribute__((pcs("aapcs"))) 59711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 59811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __NDK_FPABI__ 59911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 60011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 60111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if (!defined(_NDK_MATH_NO_SOFTFP) || _NDK_MATH_NO_SOFTFP != 1) && !defined(__clang__) 60211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __NDK_FPABI_MATH__ __NDK_FPABI__ 60311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#else 60411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#define __NDK_FPABI_MATH__ /* nothing */ 60511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 60611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 60711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif /* !_SYS_CDEFS_H_ */ 608