EXTERNAL_HEADERS/stdarg.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /* stdarg.h for GNU.
  23    Note that the type used in va_arg is supposed to match the
  24    actual type **after default promotions**.
  25    Thus, va_arg (..., short) is not valid.  */
  26
  27 #ifndef _STDARG_H
  28 #ifndef _ANSI_STDARG_H_
  29 #ifndef __need___va_list
  30 #define _STDARG_H
  31 #define _ANSI_STDARG_H_
  32 #endif /* not __need___va_list */
  33 #undef __need___va_list
  34
  35 #ifdef __clipper__
  36 #include <va-clipper.h>
  37 #else
  38 #ifdef __m88k__
  39 #include <va-m88k.h>
  40 #else
  41 #ifdef __i860__
  42 #include <va-i860.h>
  43 #else
  44 #ifdef __hppa__
  45 #include <va-pa.h>
  46 #else
  47 #ifdef __mips__
  48 #include <va-mips.h>
  49 #else
  50 #ifdef __sparc__
  51 #include <va-sparc.h>
  52 #else
  53 #ifdef __i960__
  54 #include <va-i960.h>
  55 #else
  56 #ifdef __alpha__
  57 #include <va-alpha.h>
  58 #else
  59 #if defined (__H8300__) || defined (__H8300H__)
  60 #include <va-h8300.h>
  61 #else
  62 #if defined (__PPC__) && defined (_CALL_SYSV)
  63 #include <va-ppc.h>
  64 #else
  65
  66 /* Define __gnuc_va_list.  */
  67
  68 #ifndef __GNUC_VA_LIST
  69 #define __GNUC_VA_LIST
  70 #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX) || defined(__NetBSD__) || (defined(__APPLE__) && defined(__ppc__))
  71 typedef char *__gnuc_va_list;
  72 #else
  73 typedef void *__gnuc_va_list;
  74 #endif
  75 #endif
  76
  77 /* Define the standard macros for the user,
  78    if this invocation was from the user program.  */
  79 #ifdef _STDARG_H
  80
  81 /* Amount of space required in an argument list for an arg of type TYPE.
  82    TYPE may alternatively be an expression whose type is used.  */
  83
  84 #if defined(sysV68)
  85 #define __va_rounded_size(TYPE)  \
  86   (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short))
  87 #else
  88 #define __va_rounded_size(TYPE)  \
  89   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
  90 #endif
  91
  92 #define va_start(AP, LASTARG)                                           \
  93  (AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG)))
  94
  95 #undef va_end
  96 void va_end (__gnuc_va_list);           /* Defined in libgcc.a */
  97 #define va_end(AP)      ((void)0)
  98
  99 /* We cast to void * and then to TYPE * because this avoids
 100    a warning about increasing the alignment requirement.  */
 101
 102 #if defined (__arm__) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__)
 103 /* This is for little-endian machines; small args are padded upward.  */
 104 #define va_arg(AP, TYPE)                                                \
 105  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
 106   *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
 107 #else /* big-endian */
 108 /* This is for big-endian machines; small args are padded downward.  */
 109 #define va_arg(AP, TYPE)                                                \
 110  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
 111   *((TYPE *) (void *) ((char *) (AP)                                    \
 112                        - ((sizeof (TYPE) < __va_rounded_size (char)     \
 113                            ? sizeof (TYPE) : __va_rounded_size (TYPE))))))
 114 #endif /* big-endian */
 115 #endif /* _STDARG_H */
 116
 117 #endif /* not powerpc with V.4 calling sequence */
 118 #endif /* not h8300 */
 119 #endif /* not alpha */
 120 #endif /* not i960 */
 121 #endif /* not sparc */
 122 #endif /* not mips */
 123 #endif /* not hppa */
 124 #endif /* not i860 */
 125 #endif /* not m88k */
 126 #endif /* not clipper */
 127
 128 #ifdef _STDARG_H
 129 /* Define va_list, if desired, from __gnuc_va_list. */
 130 /* We deliberately do not define va_list when called from
 131    stdio.h, because ANSI C says that stdio.h is not supposed to define
 132    va_list.  stdio.h needs to have access to that data type,
 133    but must not use that name.  It should use the name __gnuc_va_list,
 134    which is safe because it is reserved for the implementation.  */
 135
 136 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
 137 #undef _VA_LIST
 138 #endif
 139
 140 #ifdef _BSD_VA_LIST
 141 #undef _BSD_VA_LIST
 142 #endif
 143
 144 #ifdef __svr4__
 145 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
 146    so we must avoid testing it and setting it here.
 147    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
 148    have no conflict with that.  */
 149 #ifndef _VA_LIST_
 150 #define _VA_LIST_
 151 #ifdef __i860__
 152 #ifndef _VA_LIST
 153 #define _VA_LIST va_list
 154 #endif
 155 #endif /* __i860__ */
 156 typedef __gnuc_va_list va_list;
 157 #endif /* _VA_LIST_ */
 158 #else /* not __svr4__ */
 159
 160 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
 161    But on BSD NET2 we must not test or define or undef it.
 162    (Note that the comments in NET 2's ansi.h
 163    are incorrect for _VA_LIST_--see stdio.h!)  */
 164 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
 165 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 166 #ifndef _VA_LIST_DEFINED
 167 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 168 #ifndef _VA_LIST
 169 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 170 #ifndef _VA_LIST_T_H
 171 typedef __gnuc_va_list va_list;
 172 #endif /* not _VA_LIST_T_H */
 173 #endif /* not _VA_LIST */
 174 #endif /* not _VA_LIST_DEFINED */
 175 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 176 #define _VA_LIST_
 177 #endif
 178 #ifndef _VA_LIST
 179 #define _VA_LIST
 180 #endif
 181 #ifndef _VA_LIST_DEFINED
 182 #define _VA_LIST_DEFINED
 183 #endif
 184 #ifndef _VA_LIST_T_H
 185 #define _VA_LIST_T_H
 186 #endif
 187
 188 #endif /* not _VA_LIST_, except on certain systems */
 189
 190 #endif /* not __svr4__ */
 191
 192 #endif /* _STDARG_H */
 193
 194 #endif /* not _ANSI_STDARG_H_ */
 195 #endif /* not _STDARG_H */