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
  30 #ifdef __NeXT__
  31
  32 /* On Next, erase any vestiges of stdarg.h.  */
  33
  34 #ifdef _ANSI_STDARG_H_
  35 #define _VA_LIST_
  36 #endif
  37 #define _ANSI_STDARG_H_
  38
  39 #undef va_alist
  40 #undef va_dcl
  41 #undef va_list
  42 #undef va_start
  43 #undef va_end
  44 #undef va_arg
  45 #endif  /* __NeXT__ */
  46
  47 /* These macros implement traditional (non-ANSI) varargs
  48    for GNU C.  */
  49
  50 #define va_alist  __builtin_va_alist
  51
  52 /* ??? We don't process attributes correctly in K&R argument context.  */
  53 typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));
  54
  55 /* ??? It would be nice to get rid of the ellipsis here.  It causes
  56    current_function_varargs to be set in cc1.  */
  57 #define va_dcl          __builtin_va_alist_t __builtin_va_alist; ...
  58
  59 /* Define __gnuc_va_list, just as in stdarg.h.  */
  60
  61 #ifndef __GNUC_VA_LIST
  62 #define __GNUC_VA_LIST
  63 typedef __builtin_va_list __gnuc_va_list;
  64 #endif
  65
  66 #define va_start(v)     __builtin_varargs_start((v))
  67 #define va_end          __builtin_va_end
  68 #define va_arg          __builtin_va_arg
  69 #define __va_copy(d,s)  __builtin_va_copy((d),(s))
  70
  71 /* Define va_list from __gnuc_va_list.  */
  72
  73 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
  74 #undef _VA_LIST
  75 #endif
  76
  77 #if defined(__svr4__) || (defined(_SCO_DS) && !defined(__VA_LIST))
  78 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
  79    so we must avoid testing it and setting it here.
  80    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
  81    have no conflict with that.  */
  82 #ifndef _VA_LIST_
  83 #define _VA_LIST_
  84 #ifdef __i860__
  85 #ifndef _VA_LIST
  86 #define _VA_LIST va_list
  87 #endif
  88 #endif /* __i860__ */
  89 typedef __gnuc_va_list va_list;
  90 #ifdef _SCO_DS
  91 #define __VA_LIST
  92 #endif
  93 #endif /* _VA_LIST_ */
  94
  95 #else /* not __svr4__  || _SCO_DS */
  96
  97 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
  98    But on BSD NET2 we must not test or define or undef it.
  99    (Note that the comments in NET 2's ansi.h
 100    are incorrect for _VA_LIST_--see stdio.h!)  */
 101 /* Michael Eriksson <mer@sics.se> at Thu Sep 30 11:00:57 1993:
 102    Sequent defines _VA_LIST_ in <machine/machtypes.h> to be the type to
 103    use for va_list (``typedef _VA_LIST_ va_list'') */
 104 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
 105 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 106 #ifndef _VA_LIST_DEFINED
 107 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 108 #ifndef _VA_LIST
 109 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 110 #ifndef _VA_LIST_T_H
 111 /* The macro __va_list__ is used by BeOS.  */
 112 #ifndef __va_list__
 113 typedef __gnuc_va_list va_list;
 114 #endif /* not __va_list__ */
 115 #endif /* not _VA_LIST_T_H */
 116 #endif /* not _VA_LIST */
 117 #endif /* not _VA_LIST_DEFINED */
 118 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 119 #define _VA_LIST_
 120 #endif
 121 #ifndef _VA_LIST
 122 #define _VA_LIST
 123 #endif
 124 #ifndef _VA_LIST_DEFINED
 125 #define _VA_LIST_DEFINED
 126 #endif
 127 #ifndef _VA_LIST_T_H
 128 #define _VA_LIST_T_H
 129 #endif
 130 #ifndef __va_list__
 131 #define __va_list__
 132 #endif
 133
 134 #endif /* not _VA_LIST_, except on certain systems */
 135
 136 #endif /* not __svr4__ */
 137
 138 /* The next BSD release (if there is one) wants this symbol to be
 139    undefined instead of _VA_LIST_.  */
 140 #ifdef _BSD_VA_LIST
 141 #undef _BSD_VA_LIST
 142 #endif
 143
 144 #endif /* _VARARGS_H */