EXTERNAL_HEADERS/stdarg.h

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