include/sys/ccompile.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26 /*
  27  * Copyright 2015 EveryCity Ltd. All rights reserved.
  28  */
  29
  30 #ifndef _SYS_CCOMPILE_H
  31 #define _SYS_CCOMPILE_H
  32
  33 /*
  34  * This file contains definitions designed to enable different compilers
  35  * to be used harmoniously on Solaris systems.
  36  */
  37
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 /*
  43  * Allow for version tests for compiler bugs and features.
  44  */
  45 #if defined(__GNUC__)
  46 #define __GNUC_VERSION  \
  47         (__GNUC__ * 10000 + __GNUC_MINOR__ * 100 + __GNUC_PATCHLEVEL__)
  48 #else
  49 #define __GNUC_VERSION  0
  50 #endif
  51
  52 #if defined(__ATTRIBUTE_IMPLEMENTED) || defined(__GNUC__)
  53
  54 /*
  55  * analogous to lint's PRINTFLIKEn
  56  */
  57 #define __sun_attr___PRINTFLIKE__(__n)  \
  58                 __attribute__((__format__(printf, __n, (__n)+1)))
  59 #define __sun_attr___VPRINTFLIKE__(__n) \
  60                 __attribute__((__format__(printf, __n, 0)))
  61
  62 /*
  63  * Handle the kernel printf routines that can take '%b' too
  64  */
  65 #if __GNUC_VERSION < 30402
  66 /*
  67  * XX64 at least this doesn't work correctly yet with 3.4.1 anyway!
  68  */
  69 #define __sun_attr___KPRINTFLIKE__      __sun_attr___PRINTFLIKE__
  70 #define __sun_attr___KVPRINTFLIKE__     __sun_attr___VPRINTFLIKE__
  71 #else
  72 #define __sun_attr___KPRINTFLIKE__(__n) \
  73                 __attribute__((__format__(cmn_err, __n, (__n)+1)))
  74 #define __sun_attr___KVPRINTFLIKE__(__n) \
  75                 __attribute__((__format__(cmn_err, __n, 0)))
  76 #endif
  77
  78 /*
  79  * This one's pretty obvious -- the function never returns
  80  */
  81 #define __sun_attr___noreturn__ __attribute__((__noreturn__))
  82
  83 /*
  84  * The function is 'extern inline' and expects GNU C89 behaviour, not C99
  85  * behaviour.
  86  *
  87  * Should only be used on 'extern inline' definitions for GCC.
  88  */
  89 #if __GNUC_VERSION >= 40200
  90 #define __sun_attr___gnu_inline__       __attribute__((__gnu_inline__))
  91 #else
  92 #define __sun_attr___gnu_inline__
  93 #endif
  94
  95 /*
  96  * The function has control flow such that it may return multiple times (in
  97  * the manner of setjmp or vfork)
  98  */
  99 #if __GNUC_VERSION >= 40100
 100 #define __sun_attr___returns_twice__    __attribute__((__returns_twice__))
 101 #else
 102 #define __sun_attr___returns_twice__
 103 #endif
 104
 105 /*
 106  * This is an appropriate label for functions that do not
 107  * modify their arguments, e.g. strlen()
 108  */
 109 #define __sun_attr___pure__     __attribute__((__pure__))
 110
 111 /*
 112  * This is a stronger form of __pure__. Can be used for functions
 113  * that do not modify their arguments and don't depend on global
 114  * memory.
 115  */
 116 #define __sun_attr___const__    __attribute__((__const__))
 117
 118 /*
 119  * structure packing like #pragma pack(1)
 120  */
 121 #define __sun_attr___packed__   __attribute__((__packed__))
 122
 123 /*
 124  * This attribute, attached to a variable, means that the variable is meant to
 125  * be possibly unused. GCC will not produce a warning for this variable.
 126  */
 127 #if __GNUC_VERSION >= 20700
 128 #define __sun_attr___unused__   __attribute__((__unused__))
 129 #else
 130 #define __sun_attr___unused__
 131 #endif
 132
 133 #define ___sun_attr_inner(__a)  __sun_attr_##__a
 134 #define __sun_attr__(__a)       ___sun_attr_inner __a
 135
 136 #else   /* __ATTRIBUTE_IMPLEMENTED || __GNUC__ */
 137
 138 #define __sun_attr__(__a)
 139
 140 #endif  /* __ATTRIBUTE_IMPLEMENTED || __GNUC__ */
 141
 142 /*
 143  * Shorthand versions for readability
 144  */
 145
 146 #define __PRINTFLIKE(__n)       __sun_attr__((__PRINTFLIKE__(__n)))
 147 #define __VPRINTFLIKE(__n)      __sun_attr__((__VPRINTFLIKE__(__n)))
 148 #define __KPRINTFLIKE(__n)      __sun_attr__((__KPRINTFLIKE__(__n)))
 149 #define __KVPRINTFLIKE(__n)     __sun_attr__((__KVPRINTFLIKE__(__n)))
 150 #define __NORETURN              __sun_attr__((__noreturn__))
 151 #define __GNU_INLINE            __inline__ __sun_attr__((__gnu_inline__))
 152 #define __RETURNS_TWICE         __sun_attr__((__returns_twice__))
 153 #define __CONST                 __sun_attr__((__const__))
 154 #define __PURE                  __sun_attr__((__pure__))
 155 #define __GNU_UNUSED            __sun_attr__((__unused__))
 156
 157 #ifdef  __cplusplus
 158 }
 159 #endif
 160
 161 #endif  /* _SYS_CCOMPILE_H */