EXTERNAL_HEADERS/stdarg.h

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