gcc/ginclude/varargs.h

   1 /* Copyright (C) 1989, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
   2
   3 This file is part of GNU CC.
   4
   5 GNU CC is free software; you can redistribute it and/or modify
   6 it under the terms of the GNU General Public License as published by
   7 the Free Software Foundation; either version 2, or (at your option)
   8 any later version.
   9
  10 GNU CC is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with GNU CC; see the file COPYING.  If not, write to
  17 the Free Software Foundation, 59 Temple Place - Suite 330,
  18 Boston, MA 02111-1307, USA.  */
  19
  20 /* As a special exception, if you include this header file into source
  21    files compiled by GCC, this header file does not by itself cause
  22    the resulting executable to be covered by the GNU General Public
  23    License.  This exception does not however invalidate any other
  24    reasons why the executable file might be covered by the GNU General
  25    Public License.  */
  26
  27 #ifndef _VARARGS_H
  28 #define _VARARGS_H
  29 #ifndef RC_INVOKED
  30
  31 #ifdef __NeXT__
  32
  33 /* On Next, erase any vestiges of stdarg.h.  */
  34
  35 #ifdef _ANSI_STDARG_H_
  36 #define _VA_LIST_
  37 #endif
  38 #define _ANSI_STDARG_H_
  39
  40 #undef va_alist
  41 #undef va_dcl
  42 #undef va_list
  43 #undef va_start
  44 #undef va_end
  45 #undef va_arg
  46 #endif  /* __NeXT__ */
  47
  48 /* These macros implement traditional (non-ANSI) varargs
  49    for GNU C.  */
  50
  51 #define va_alist  __builtin_va_alist
  52
  53 /* ??? We don't process attributes correctly in K&R argument context.  */
  54 typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));
  55
  56 /* ??? It would be nice to get rid of the ellipsis here.  It causes
  57    current_function_varargs to be set in cc1.  */
  58 #define va_dcl          __builtin_va_alist_t __builtin_va_alist; ...
  59
  60 /* Define __gnuc_va_list, just as in stdarg.h.  */
  61
  62 #ifndef __GNUC_VA_LIST
  63 #define __GNUC_VA_LIST
  64 typedef __builtin_va_list __gnuc_va_list;
  65 #endif
  66
  67 #define va_start(v)     __builtin_varargs_start((v))
  68 #define va_end          __builtin_va_end
  69 #define va_arg          __builtin_va_arg
  70 #define __va_copy(d,s)  __builtin_va_copy((d),(s))
  71
  72 /* Define va_list from __gnuc_va_list.  */
  73
  74 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
  75 #undef _VA_LIST
  76 #endif
  77
  78 #if defined(__svr4__) || (defined(_SCO_DS) && !defined(__VA_LIST))
  79 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
  80    so we must avoid testing it and setting it here.
  81    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
  82    have no conflict with that.  */
  83 #ifndef _VA_LIST_
  84 #define _VA_LIST_
  85 #ifdef __i860__
  86 #ifndef _VA_LIST
  87 #define _VA_LIST va_list
  88 #endif
  89 #endif /* __i860__ */
  90 typedef __gnuc_va_list va_list;
  91 #ifdef _SCO_DS
  92 #define __VA_LIST
  93 #endif
  94 #endif /* _VA_LIST_ */
  95
  96 #else /* not __svr4__  || _SCO_DS */
  97
  98 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
  99    But on BSD NET2 we must not test or define or undef it.
 100    (Note that the comments in NET 2's ansi.h
 101    are incorrect for _VA_LIST_--see stdio.h!)  */
 102 /* Michael Eriksson <mer@sics.se> at Thu Sep 30 11:00:57 1993:
 103    Sequent defines _VA_LIST_ in <machine/machtypes.h> to be the type to
 104    use for va_list (``typedef _VA_LIST_ va_list'') */
 105 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(__WIN32__)
 106 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 107 #ifndef _VA_LIST_DEFINED
 108 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 109 #ifndef _VA_LIST
 110 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 111 #ifndef _VA_LIST_T_H
 112 /* The macro __va_list__ is used by BeOS.  */
 113 #ifndef __va_list__
 114 typedef __gnuc_va_list va_list;
 115 #endif /* not __va_list__ */
 116 #endif /* not _VA_LIST_T_H */
 117 #endif /* not _VA_LIST */
 118 #endif /* not _VA_LIST_DEFINED */
 119 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 120 #define _VA_LIST_
 121 #endif
 122 #ifndef _VA_LIST
 123 #define _VA_LIST
 124 #endif
 125 #ifndef _VA_LIST_DEFINED
 126 #define _VA_LIST_DEFINED
 127 #endif
 128 #ifndef _VA_LIST_T_H
 129 #define _VA_LIST_T_H
 130 #endif
 131 #ifndef __va_list__
 132 #define __va_list__
 133 #endif
 134
 135 #endif /* not _VA_LIST_, except on certain systems */
 136
 137 #endif /* not __svr4__ */
 138
 139 /* The next BSD release (if there is one) wants this symbol to be
 140    undefined instead of _VA_LIST_.  */
 141 #ifdef _BSD_VA_LIST
 142 #undef _BSD_VA_LIST
 143 #endif
 144
 145 #endif /* not RC_INVOKED */
 146 #endif /* _VARARGS_H */