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//==========================================================================

//

//      include/sys/cdefs.h

//

//==========================================================================

// ####BSDALTCOPYRIGHTBEGIN####                                 

// -------------------------------------------                  

// Portions of this software may have been derived from FreeBSD 

// or other sources, and if so are covered by the appropriate copyright

// and license included herein.                                 

// -------------------------------------------                  

// ####BSDALTCOPYRIGHTEND####                                   

//==========================================================================

/*

 * 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.

 * 3. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 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: src/sys/sys/cdefs.h,v 1.28.2.4 2001/06/02 17:36:24 obrien Exp $

 */

#ifndef _SYS_CDEFS_H_

#define _SYS_CDEFS_H_

#if defined(__cplusplus)

#define __BEGIN_DECLS   extern "C" {

#define __END_DECLS     }

#else

#define __BEGIN_DECLS

#define __END_DECLS

#endif

/*

 * 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

#ifndef __GNUC__

#define __inline                        /* delete GCC keyword */

#endif /* !__GNUC__ */

#endif /* !__cplusplus */

#else   /* !(__STDC__ || __cplusplus) */

#define __P(protos)     ()              /* traditional C preprocessor */

#define __CONCAT(x,y)   x/**/y

#define __STRING(x)     "x"

#ifndef __GNUC__

#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  /* !__GNUC__ */

#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 __GNUC__ < 2 || __GNUC__ == 2 && __GNUC_MINOR__ < 5

#define __dead2

#define __pure2

#define __unused

#endif

#if __GNUC__ == 2 && __GNUC_MINOR__ >= 5 && __GNUC_MINOR__ < 7

#define __dead2         __attribute__((__noreturn__))

#define __pure2         __attribute__((__const__))

#define __unused

#endif

#if __GNUC__ == 2 && __GNUC_MINOR__ >= 7 || __GNUC__ == 3

#define __dead2         __attribute__((__noreturn__))

#define __pure2         __attribute__((__const__))

#define __unused        __attribute__((__unused__))

#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__ < 2 || __GNUC__ == 2 && __GNUC_MINOR__ < 7

#define __printflike(fmtarg, firstvararg)

#define __scanflike(fmtarg, firstvararg)

#else

#define __printflike(fmtarg, firstvararg) \

            __attribute__((__format__ (__printf__, fmtarg, firstvararg)))

#define __scanflike(fmtarg, firstvararg) \

            __attribute__((__format__ (__scanf__, fmtarg, firstvararg)))

#endif

/* Compiler-dependent macros that rely on FreeBSD-specific extensions. */

#if defined(__FreeBSD_cc_version) && (__FreeBSD_cc_version >= 300001)

#define __printf0like(fmtarg, firstvararg) \

            __attribute__((__format__ (__printf0__, fmtarg, firstvararg)))

#else

#define __printf0like(fmtarg, firstvararg)

#endif

#ifdef __GNUC__

#define __strong_reference(sym,aliassym)        \

        extern __typeof (sym) aliassym __attribute__ ((__alias__ (#sym)));

#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")

#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")

#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__ */

#if defined(__GNUC__) && defined(__ELF__)

#define __IDSTRING(name,string) __asm__(".ident\t\"" string "\"")

#else

#define __IDSTRING(name,string) static const char name[] __unused = string

#endif

#ifndef __RCSID

#define __RCSID(s)      __IDSTRING(rcsid,s)

#endif

#ifndef __RCSID_SOURCE

#define __RCSID_SOURCE(s) __IDSTRING(rcsid_source,s)

#endif

#ifndef __COPYRIGHT

#define __COPYRIGHT(s)  __IDSTRING(copyright,s)

#endif

#endif /* !_SYS_CDEFS_H_ */