The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/x86/include/stdarg.h

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    1 /*-
    2  * Copyright (c) 2002 David E. O'Brien.  All rights reserved.
    3  *
    4  * Redistribution and use in source and binary forms, with or without
    5  * modification, are permitted provided that the following conditions
    6  * are met:
    7  * 1. Redistributions of source code must retain the above copyright
    8  *    notice, this list of conditions and the following disclaimer.
    9  * 2. Redistributions in binary form must reproduce the above copyright
   10  *    notice, this list of conditions and the following disclaimer in the
   11  *    documentation and/or other materials provided with the distribution.
   12  * 3. Neither the name of the University nor the names of its contributors
   13  *    may be used to endorse or promote products derived from this software
   14  *    without specific prior written permission.
   15  *
   16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   26  * SUCH DAMAGE.
   27  *
   28  * $FreeBSD: releng/10.4/sys/x86/include/stdarg.h 256105 2013-10-07 10:01:23Z phk $
   29  */
   30 
   31 #ifndef _MACHINE_STDARG_H_
   32 #define _MACHINE_STDARG_H_
   33 
   34 #include <sys/cdefs.h>
   35 #include <sys/_types.h>
   36 
   37 #ifndef _VA_LIST_DECLARED
   38 #define _VA_LIST_DECLARED
   39 typedef __va_list       va_list;
   40 #endif
   41 
   42 #ifdef __GNUCLIKE_BUILTIN_STDARG
   43 
   44 #define va_start(ap, last) \
   45         __builtin_va_start((ap), (last))
   46 
   47 #define va_arg(ap, type) \
   48         __builtin_va_arg((ap), type)
   49 
   50 #define __va_copy(dest, src) \
   51         __builtin_va_copy((dest), (src))
   52 
   53 #if __ISO_C_VISIBLE >= 1999
   54 #define va_copy(dest, src) \
   55         __va_copy(dest, src)
   56 #endif
   57 
   58 #define va_end(ap) \
   59         __builtin_va_end(ap)
   60 
   61 #elif defined(lint)
   62 /* Provide a fake implementation for lint's benefit */
   63 #define __va_size(type) \
   64         (((sizeof(type) + sizeof(long) - 1) / sizeof(long)) * sizeof(long))
   65 #define va_start(ap, last) \
   66         ((ap) = (va_list)&(last) + __va_size(last))
   67 #define va_copy(dst, src) \
   68         ((dst) = (src))
   69 #define va_arg(ap, type) \
   70         (*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
   71 #define va_end(ap)
   72 
   73 #else
   74 #error this file needs to be ported to your compiler
   75 #endif
   76 
   77 #endif /* !_MACHINE_STDARG_H_ */

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