1 /*- 2 * Copyright (c) 1991, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This code is derived from software contributed to Berkeley by 6 * Berkeley Software Design, Inc. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 4. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 * 32 * @(#)cdefs.h 8.8 (Berkeley) 1/9/95 33 * $FreeBSD: src/sys/sys/cdefs.h,v 1.114 2011/02/18 21:44:53 nwhitehorn Exp $ 34 */ 35 36 /* Do not redefine macros if the system provides them in sys/cdefs.h. 37 * The two macros correspond to different platforms. */ 38 #ifndef _BSD_CDEFS_H_ 39 #define _BSD_CDEFS_H_ 40 41 /* 42 * This code has been put in place to help reduce the addition of 43 * compiler specific defines in FreeBSD code. It helps to aid in 44 * having a compiler-agnostic source tree. 45 */ 46 47 #if defined(__GNUC__) || defined(__INTEL_COMPILER) 48 49 #if __GNUC__ >= 3 || defined(__INTEL_COMPILER) 50 #define __GNUCLIKE_ASM 3 51 #else 52 #define __GNUCLIKE_ASM 2 53 #endif 54 55 #define __CC_SUPPORTS___INLINE__ 1 56 57 #endif /* __GNUC__ || __INTEL_COMPILER */ 58 59 #if defined(__STDC__) || defined(__cplusplus) 60 61 #define __volatile volatile 62 #if defined(__cplusplus) 63 #define __inline inline /* convert to C++ keyword */ 64 #else 65 #if !defined(__CC_SUPPORTS___INLINE) 66 #define __inline /* delete GCC keyword */ 67 #endif /* ! __CC_SUPPORTS___INLINE */ 68 #endif /* !__cplusplus */ 69 70 #else /* !(__STDC__ || __cplusplus) */ 71 72 #if !defined(__CC_SUPPORTS___INLINE) 73 #define __inline 74 #define __volatile 75 #endif /* !__CC_SUPPORTS___INLINE */ 76 #endif /* !(__STDC__ || __cplusplus) */ 77 78 /* 79 * Macro to test if we're using a specific version of gcc or later. 80 */ 81 #if defined(__GNUC__) && !defined(__INTEL_COMPILER) 82 #define __GNUC_PREREQ__(ma, mi) \ 83 (__GNUC__ > (ma) || __GNUC__ == (ma) && __GNUC_MINOR__ >= (mi)) 84 #else 85 #define __GNUC_PREREQ__(ma, mi) 0 86 #endif 87 88 /* 89 * Compiler-dependent macro to help declare pure (no side effects) functions. 90 * It is null except for versions of gcc that are known to support the features 91 * properly (old versions of gcc-2 supported the dead and pure features 92 * in a different (wrong) way), and for icc. If we do not provide an implementation 93 * for a given compiler, let the compile fail if it is told to use 94 * a feature that we cannot live without. 95 */ 96 #if !defined(__pure2) && (__GNUC_PREREQ__(2, 7) || defined(__INTEL_COMPILER)) 97 #define __pure2 __attribute__((__const__)) 98 #endif 99 100 #endif /* !_BSD_CDEFS_H_ */ 101