2 * Copyright (c) 1991, 1993
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3 * The Regents of the University of California. All rights reserved.
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright
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11 * notice, this list of conditions and the following disclaimer in the
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12 * documentation and/or other materials provided with the distribution.
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13 * 3. All advertising materials mentioning features or use of this software
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14 * must display the following acknowledgement:
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15 * This product includes software developed by the University of
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16 * California, Berkeley and its contributors.
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17 * 4. Neither the name of the University nor the names of its contributors
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18 * may be used to endorse or promote products derived from this software
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19 * without specific prior written permission.
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21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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33 * from: @(#)cdefs.h 8.1 (Berkeley) 6/2/93
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34 * $FreeBSD: src/sys/i386/boot/dosboot/cdefs.h,v 1.5 1999/08/28 00:43:21 peter Exp $
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35 * $DragonFly: src/sys/i386/boot/dosboot/Attic/cdefs.h,v 1.2 2003/06/17 04:28:34 dillon Exp $
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41 #if defined(__cplusplus)
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42 #define __BEGIN_DECLS extern "C" {
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43 #define __END_DECLS };
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45 #define __BEGIN_DECLS
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50 * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
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51 * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
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52 * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
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53 * in between its arguments. __CONCAT can also concatenate double-quoted
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54 * strings produced by the __STRING macro, but this only works with ANSI C.
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56 #if defined(__STDC__) || defined(__cplusplus)
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59 #endif /* defined(__P) */
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60 #define __P(protos) protos /* full-blown ANSI C */
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61 #define __CONCAT(x,y) x ## y
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62 #define __STRING(x) #x
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64 #else /* !(__STDC__ || __cplusplus) */
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67 #endif /* defined(__P) */
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68 #define __P(protos) () /* traditional C preprocessor */
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69 #define __CONCAT(x,y) x/**/y
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70 #define __STRING(x) "x"
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72 /* delete ANSI C keywords */
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77 #endif /* !(__STDC__ || __cplusplus) */
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80 * GCC has extensions for declaring functions as const (`pure' - always returns
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81 * the same value given the same inputs, i.e., has no external state and
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82 * no side effects) and volatile (nonreturning or `dead').
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83 * These mainly affect optimization and warnings.
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85 * To facilitate portability of a non-standard extension we define __pure
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86 * and __dead and use these for qualifying functions. Non-gcc compilers
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87 * which have similar extensions can then define these appropriately.
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89 * Unfortunately, GCC complains if these are used under strict ANSI mode
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90 * (`gcc -ansi -pedantic'), hence we need to define them only if compiling
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93 #if defined(__GNUC__) && !defined(__STRICT_ANSI__)
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94 #define __dead __volatile
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95 #define __pure __const
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101 #endif /* !_CDEFS_H_ */
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