sys/arch/mips/include/stdarg.h

   1 /*      $NetBSD: stdarg.h,v 1.28 2008/06/21 00:56:39 gmcgarry Exp $     */
   2
   3 /*-
   4  * Copyright (c) 1992, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  *
  31  *      @(#)stdarg.h    8.1 (Berkeley) 6/10/93
  32  */
  33
  34 #ifndef _MIPS_STDARG_H_
  35 #define _MIPS_STDARG_H_
  36
  37 #include <machine/ansi.h>
  38 #include <sys/featuretest.h>
  39
  40 typedef _BSD_VA_LIST_   va_list;
  41
  42 #ifdef __lint__
  43
  44 #define va_start(ap, last)      ((ap) = *(va_list *)0)
  45 #define va_arg(ap, type)        (*(type *)(void *)&(ap))
  46 #define va_end(ap)
  47 #define __va_copy(dest, src)    ((dest) = (src))
  48
  49 #elif __GNUC_PREREQ__(3, 0)
  50
  51 #define va_start(ap, last)      __builtin_stdarg_start((ap), last)
  52 #define va_arg(ap, type)        __builtin_va_arg((ap), type)
  53 #define va_end(ap)              __builtin_va_end((ap))
  54 #define __va_copy(dest, src)    __builtin_va_copy((dest), (src))
  55
  56 #elif defined(__PCC__)
  57
  58 #define va_start(ap, last)      __builtin_stdarg_start((ap), last)
  59 #define va_arg(ap, type)        __builtin_va_arg((ap), type)
  60 #define va_end(ap)              __builtin_va_end((ap))
  61 #define __va_copy(dest, src)    __builtin_va_copy((dest), (src))
  62
  63 #else
  64
  65 #if defined(__mips_n32)
  66 #error stdarg.h does not work with the N32 ABI with this compiler
  67 #elif defined(__mips_n64)
  68 #error stdarg.h does not work with the N64 ABI with this compiler
  69 #endif
  70
  71 #define va_start(ap, last) \
  72         ((ap) = (va_list)__builtin_next_arg(last))
  73
  74 #if BYTE_ORDER == LITTLE_ENDIAN
  75 #define va_arg(ap, T)                                                   \
  76         (((T *)(                                                        \
  77             (ap) += (/*CONSTCOND*/ __alignof__(T) <= sizeof(int)        \
  78                 ? sizeof(int) : ((long)(ap) & 4) + sizeof(T)),          \
  79             (ap) - (/*CONSTCOND*/ __alignof__(T) <= sizeof(int)         \
  80                 ? sizeof(int) : sizeof(T))                              \
  81         ))[0])
  82 #else
  83 #define va_arg(ap, T)                                                   \
  84         (((T *)(                                                        \
  85             (ap) += (/*CONSTCOND*/ __alignof__(T) <= sizeof(int)        \
  86                 ? sizeof(int) : ((long)(ap) & 4) + sizeof(T))           \
  87         ))[-1])
  88 #endif
  89
  90 #define va_end(ap)
  91
  92 #define __va_copy(dest, src)    ((dest) = (src))
  93
  94 #endif
  95
  96 #if !defined(_ANSI_SOURCE) &&                                           \
  97     (defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L ||    \
  98      defined(_NETBSD_SOURCE))
  99 #define va_copy(dest, src)      __va_copy((dest), (src))
 100 #endif
 101
 102 #endif /* !_MIPS_STDARG_H_ */