gcc/ginclude/varargs.h

   1 /* Record that this is varargs.h; this turns off stdarg.h.  */
   2
   3 #ifndef _VARARGS_H
   4 #define _VARARGS_H
   5
   6 #ifdef __sparc__
   7 #include "va-sparc.h"
   8 #else
   9 #ifdef __spur__
  10 #include "va-spur.h"
  11 #else
  12 #ifdef __mips__
  13 #include "va-mips.h"
  14 #else
  15 #ifdef __i860__
  16 #include "va-i860.h"
  17 #else
  18 #ifdef __pyr__
  19 #include "va-pyr.h"
  20 #else
  21 #ifdef __clipper__
  22 #include "va-clipper.h"
  23 #else
  24 #ifdef __m88k__
  25 #include "va-m88k.h"
  26 #else
  27 #if defined(__hppa__) || defined(hp800)
  28 #include "va-pa.h"
  29 #else
  30 #ifdef __i960__
  31 #include "va-i960.h"
  32 #else
  33 #ifdef __alpha__
  34 #include "va-alpha.h"
  35 #else
  36 #if defined (__H8300__) || defined (__H8300H__) || defined (__H8300S__)
  37 #include "va-h8300.h"
  38 #else
  39 #if defined (__PPC__) && (defined (_CALL_SYSV) || defined (_WIN32))
  40 #include "va-ppc.h"
  41 #else
  42 #ifdef __sh__
  43 #include "va-sh.h"
  44 #else
  45 #ifdef __mn10300__
  46 #include "va-mn10300.h"
  47 #else
  48
  49 #ifdef __NeXT__
  50
  51 /* On Next, erase any vestiges of stdarg.h.  */
  52
  53 #ifdef _ANSI_STDARG_H_
  54 #define _VA_LIST_
  55 #endif
  56 #define _ANSI_STDARG_H_
  57
  58 #undef va_alist
  59 #undef va_dcl
  60 #undef va_list
  61 #undef va_start
  62 #undef va_end
  63 #undef __va_rounded_size
  64 #undef va_arg
  65 #endif  /* __NeXT__ */
  66
  67 /* In GCC version 2, we want an ellipsis at the end of the declaration
  68    of the argument list.  GCC version 1 can't parse it.  */
  69
  70 #if __GNUC__ > 1
  71 #define __va_ellipsis ...
  72 #else
  73 #define __va_ellipsis
  74 #endif
  75
  76 /* These macros implement traditional (non-ANSI) varargs
  77    for GNU C.  */
  78
  79 #define va_alist  __builtin_va_alist
  80 /* The ... causes current_function_varargs to be set in cc1.  */
  81 #define va_dcl    int __builtin_va_alist; __va_ellipsis
  82
  83 /* Define __gnuc_va_list, just as in gstdarg.h.  */
  84
  85 #ifndef __GNUC_VA_LIST
  86 #define __GNUC_VA_LIST
  87 #if defined(__svr4__) || defined(_AIX) || defined(_M_UNIX)
  88 typedef char *__gnuc_va_list;
  89 #else
  90 typedef void *__gnuc_va_list;
  91 #endif
  92 #endif
  93
  94 #define va_start(AP)  AP=(char *) &__builtin_va_alist
  95
  96 #define va_end(AP)      ((void)0)
  97
  98 #if defined(sysV68)
  99 #define __va_rounded_size(TYPE)  \
 100   (((sizeof (TYPE) + sizeof (short) - 1) / sizeof (short)) * sizeof (short))
 101 #else
 102 #define __va_rounded_size(TYPE)  \
 103   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
 104 #endif
 105
 106 #if defined (__arm__) || defined (__i386__) || defined (__i860__) || defined (__ns32000__) || defined (__vax__)
 107 /* This is for little-endian machines; small args are padded upward.  */
 108 #define va_arg(AP, TYPE)                                                \
 109  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
 110   *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))
 111 #else /* big-endian */
 112 /* This is for big-endian machines; small args are padded downward.  */
 113 #define va_arg(AP, TYPE)                                                \
 114  (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)),     \
 115   *((TYPE *) (void *) ((char *) (AP)                                    \
 116                        - ((sizeof (TYPE) < __va_rounded_size (char)     \
 117                            ? sizeof (TYPE) : __va_rounded_size (TYPE))))))
 118 #endif /* big-endian */
 119
 120 /* Copy __gnuc_va_list into another variable of this type.  */
 121 #define __va_copy(dest, src) (dest) = (src)
 122
 123 #endif /* not mn10300 */
 124 #endif /* not sh */
 125 #endif /* not powerpc with V.4 calling sequence */
 126 #endif /* not h8300 */
 127 #endif /* not alpha */
 128 #endif /* not i960 */
 129 #endif /* not hppa */
 130 #endif /* not m88k */
 131 #endif /* not clipper */
 132 #endif /* not pyr */
 133 #endif /* not i860 */
 134 #endif /* not mips */
 135 #endif /* not spur */
 136 #endif /* not sparc */
 137 #endif /* not _VARARGS_H */
 138
 139 /* Define va_list from __gnuc_va_list.  */
 140
 141 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
 142 #undef _VA_LIST
 143 #endif
 144
 145 #if defined(__svr4__) || defined(_SCO_DS)
 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
 160 #else /* not __svr4__  || _SCO_DS */
 161
 162 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
 163    But on BSD NET2 we must not test or define or undef it.
 164    (Note that the comments in NET 2's ansi.h
 165    are incorrect for _VA_LIST_--see stdio.h!)  */
 166 /* Michael Eriksson <mer@sics.se> at Thu Sep 30 11:00:57 1993:
 167    Sequent defines _VA_LIST_ in <machine/machtypes.h> to be the type to
 168    use for va_list (``typedef _VA_LIST_ va_list'') */
 169 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
 170 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 171 #ifndef _VA_LIST_DEFINED
 172 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 173 #ifndef _VA_LIST
 174 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 175 #ifndef _VA_LIST_T_H
 176 typedef __gnuc_va_list va_list;
 177 #endif /* not _VA_LIST_T_H */
 178 #endif /* not _VA_LIST */
 179 #endif /* not _VA_LIST_DEFINED */
 180 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 181 #define _VA_LIST_
 182 #endif
 183 #ifndef _VA_LIST
 184 #define _VA_LIST
 185 #endif
 186 #ifndef _VA_LIST_DEFINED
 187 #define _VA_LIST_DEFINED
 188 #endif
 189 #ifndef _VA_LIST_T_H
 190 #define _VA_LIST_T_H
 191 #endif
 192
 193 #endif /* not _VA_LIST_, except on certain systems */
 194
 195 #endif /* not __svr4__ */
 196
 197 /* The next BSD release (if there is one) wants this symbol to be
 198    undefined instead of _VA_LIST_.  */
 199 #ifdef _BSD_VA_LIST
 200 #undef _BSD_VA_LIST
 201 #endif