EXTERNAL_HEADERS/stdarg.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /* stdarg.h for GNU.
  29    Note that the type used in va_arg is supposed to match the
  30    actual type **after default promotions**.
  31    Thus, va_arg (..., short) is not valid.  */
  32
  33 #ifndef _STDARG_H
  34 #ifndef _ANSI_STDARG_H_
  35 #ifndef __need___va_list
  36 #define _STDARG_H
  37 #define _ANSI_STDARG_H_
  38 #endif /* not __need___va_list */
  39 #undef __need___va_list
  40
  41 #ifdef __clipper__
  42 #include <va-clipper.h>
  43 #else
  44 #ifdef __m88k__
  45 #include <va-m88k.h>
  46 #else
  47 #ifdef __i860__
  48 #include <va-i860.h>
  49 #else
  50 #ifdef __hppa__
  51 #include <va-pa.h>
  52 #else
  53 #ifdef __mips__
  54 #include <va-mips.h>
  55 #else
  56 #ifdef __sparc__
  57 #include <va-sparc.h>
  58 #else
  59 #ifdef __i960__
  60 #include <va-i960.h>
  61 #else
  62 #ifdef __alpha__
  63 #include <va-alpha.h>
  64 #else
  65 #if defined (__H8300__) || defined (__H8300H__)
  66 #include <va-h8300.h>
  67 #else
  68 #if defined (__PPC__) && defined (_CALL_SYSV)
  69 #include <va-ppc.h>
  70 #else
  71
  72 /* Define __gnuc_va_list.  */
  73
  74 #ifndef __GNUC_VA_LIST
  75 #define __GNUC_VA_LIST
  76 #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX) || defined(__NetBSD__) || (defined(__APPLE__) && defined(__ppc__))
  77 typedef char *__gnuc_va_list;
  78 #else
  79 typedef void *__gnuc_va_list;
  80 #endif
  81 #endif
  82
  83 /* Define the standard macros for the user,
  84    if this invocation was from the user program.  */
  85 #ifdef _STDARG_H
  86
  87 /* Amount of space required in an argument list for an arg of type TYPE.
  88    TYPE may alternatively be an expression whose type is used.  */
  89
  90 #if defined(sysV68)
  91 #define __va_rounded_size(TYPE)  \
  92   (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short))
  93 #else
  94 #define __va_rounded_size(TYPE)  \
  95   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
  96 #endif
  97
  98 #define va_start(AP, LASTARG)                                           \
  99  (AP = ((__gnuc_va_list) __builtin_next_arg (LASTARG)))
 100
 101 #undef va_end
 102 void va_end (__gnuc_va_list);           /* Defined in libgcc.a */
 103 #define va_end(AP)      ((void)0)
 104
 105 /* We cast to void * and then to TYPE * because this avoids
 106    a warning about increasing the alignment requirement.  */
 107
 108 #if defined (__arm__) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__)
 109 /* This is for little-endian machines; small args are padded upward.  */
 110 #define va_arg(AP, TYPE)                                                \
 111  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
 112   *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
 113 #else /* big-endian */
 114 /* This is for big-endian machines; small args are padded downward.  */
 115 #define va_arg(AP, TYPE)                                                \
 116  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
 117   *((TYPE *) (void *) ((char *) (AP)                                    \
 118                        - ((sizeof (TYPE) < __va_rounded_size (char)     \
 119                            ? sizeof (TYPE) : __va_rounded_size (TYPE))))))
 120 #endif /* big-endian */
 121 #endif /* _STDARG_H */
 122
 123 #endif /* not powerpc with V.4 calling sequence */
 124 #endif /* not h8300 */
 125 #endif /* not alpha */
 126 #endif /* not i960 */
 127 #endif /* not sparc */
 128 #endif /* not mips */
 129 #endif /* not hppa */
 130 #endif /* not i860 */
 131 #endif /* not m88k */
 132 #endif /* not clipper */
 133
 134 #ifdef _STDARG_H
 135 /* Define va_list, if desired, from __gnuc_va_list. */
 136 /* We deliberately do not define va_list when called from
 137    stdio.h, because ANSI C says that stdio.h is not supposed to define
 138    va_list.  stdio.h needs to have access to that data type,
 139    but must not use that name.  It should use the name __gnuc_va_list,
 140    which is safe because it is reserved for the implementation.  */
 141
 142 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
 143 #undef _VA_LIST
 144 #endif
 145
 146 #ifdef _BSD_VA_LIST
 147 #undef _BSD_VA_LIST
 148 #endif
 149
 150 #ifdef __svr4__
 151 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
 152    so we must avoid testing it and setting it here.
 153    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
 154    have no conflict with that.  */
 155 #ifndef _VA_LIST_
 156 #define _VA_LIST_
 157 #ifdef __i860__
 158 #ifndef _VA_LIST
 159 #define _VA_LIST va_list
 160 #endif
 161 #endif /* __i860__ */
 162 typedef __gnuc_va_list va_list;
 163 #endif /* _VA_LIST_ */
 164 #else /* not __svr4__ */
 165
 166 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
 167    But on BSD NET2 we must not test or define or undef it.
 168    (Note that the comments in NET 2's ansi.h
 169    are incorrect for _VA_LIST_--see stdio.h!)  */
 170 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
 171 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 172 #ifndef _VA_LIST_DEFINED
 173 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 174 #ifndef _VA_LIST
 175 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 176 #ifndef _VA_LIST_T_H
 177 typedef __gnuc_va_list va_list;
 178 #endif /* not _VA_LIST_T_H */
 179 #endif /* not _VA_LIST */
 180 #endif /* not _VA_LIST_DEFINED */
 181 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 182 #define _VA_LIST_
 183 #endif
 184 #ifndef _VA_LIST
 185 #define _VA_LIST
 186 #endif
 187 #ifndef _VA_LIST_DEFINED
 188 #define _VA_LIST_DEFINED
 189 #endif
 190 #ifndef _VA_LIST_T_H
 191 #define _VA_LIST_T_H
 192 #endif
 193
 194 #endif /* not _VA_LIST_, except on certain systems */
 195
 196 #endif /* not __svr4__ */
 197
 198 #endif /* _STDARG_H */
 199
 200 #endif /* not _ANSI_STDARG_H_ */
 201 #endif /* not _STDARG_H */