FreeBSD/Linux Kernel Cross Reference
sys/sparc64/include/stdarg.h

     /*-
      * Copyright (c) 2002 David E. O'Brien.  All rights reserved.
      * Copyright (c) 1992, 1993
      *      The Regents of the University of California.  All rights reserved.
      *
      * This software was developed by the Computer Systems Engineering group
      * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
      * contributed to Berkeley.
      *
     * 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, Lawrence Berkeley Laboratory.
     *
     * 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.
     *
     * 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.
     *
     *      @(#)stdarg.h    8.2 (Berkeley) 9/27/93
     *      $NetBSD: stdarg.h,v 1.11 2000/07/23 21:36:56 mycroft Exp $
     * $FreeBSD: releng/6.0/sys/sparc64/include/stdarg.h 143063 2005-03-02 21:33:29Z joerg $
     */
    
    #ifndef _MACHINE_STDARG_H_
    #define _MACHINE_STDARG_H_
    
    #include <sys/cdefs.h>
    #include <sys/_types.h>
    
    #ifndef _VA_LIST_DECLARED
    #define _VA_LIST_DECLARED
    typedef __va_list       va_list;
    #endif
    
    #ifdef __GNUCLIKE_BUILTIN_STDARG
    
    #define va_start(ap, last) \
            __builtin_stdarg_start((ap), (last))
    
    #define va_arg(ap, type) \
            __builtin_va_arg((ap), type)
    
    #if __ISO_C_VISIBLE >= 1999
    #define va_copy(dest, src) \
            __builtin_va_copy((dest), (src))
    #endif
    
    #define va_end(ap) \
            __builtin_va_end(ap)
    
    #else   /* ! __GNUCLIKE_BUILTIN_STDARG */
    
    #if !defined(__GNUCLIKE_BUILTIN_NEXT_ARG) && !defined(lint)
    #error no support for your compiler
    #endif
    
    #define va_start(ap, last) \
            (__builtin_next_arg(last), (ap) = (va_list)__builtin_saveregs())
    
    #define va_end(ap)      
    
    #define __va_arg8(ap, type) \
            (*(type *)(void *)((ap) += 8, (ap) - 8))
    #define __va_arg16(ap, type) \
            (*(type *)(void *)((ap) = (va_list)(((unsigned long)(ap) + 31) & -16),\
                               (ap) - 16))
    #define __va_int(ap, type) \
            (*(type *)(void *)((ap) += 8, (ap) - sizeof(type)))
    
    #define __REAL_TYPE_CLASS       8
    #define __RECORD_TYPE_CLASS     12
    #define va_arg(ap, type) \
            (__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS ?     \
             (__alignof__(type) == 16 ? __va_arg16(ap, type) :              \
              __va_arg8(ap, type)) :                                        \
             (__builtin_classify_type(*(type *)0) < __RECORD_TYPE_CLASS ?   \
              __va_int(ap, type) :                                          \
              (sizeof(type) <= 8 ? __va_arg8(ap, type) :                    \
               (sizeof(type) <= 16 ? __va_arg16(ap, type) :                 \
                *__va_arg8(ap, type *)))))
    
    #endif /* __GNUCLIKE_BUILTIN_STDARG */
   
   #endif /* !_MACHINE_STDARG_H_ */

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