gcc/ginclude/stdarg.h

   1 /* Copyright (C) 1989, 1997, 1998, 1999 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 /*
  28  * ISO C Standard:  7.15  Variable arguments  <stdarg.h>
  29  */
  30
  31 #ifndef _STDARG_H
  32 #ifndef _ANSI_STDARG_H_
  33 #ifndef __need___va_list
  34 #define _STDARG_H
  35 #define _ANSI_STDARG_H_
  36 #endif /* not __need___va_list */
  37 #undef __need___va_list
  38
  39 /* Define __gnuc_va_list.  */
  40
  41 #ifndef __GNUC_VA_LIST
  42 #define __GNUC_VA_LIST
  43 typedef __builtin_va_list __gnuc_va_list;
  44 #endif
  45
  46 /* Define the standard macros for the user,
  47    if this invocation was from the user program.  */
  48 #ifdef _STDARG_H
  49
  50 /* Note that the type used in va_arg is supposed to match the
  51    actual type **after default promotions**.
  52    Thus, va_arg (..., short) is not valid.  */
  53
  54 #define va_start(v,l)   __builtin_stdarg_start(&(v),l)
  55 #define va_end          __builtin_va_end
  56 #define va_arg          __builtin_va_arg
  57 #define va_copy(d,s)    __builtin_va_copy(&(d),(s))
  58
  59
  60 /* Define va_list, if desired, from __gnuc_va_list. */
  61 /* We deliberately do not define va_list when called from
  62    stdio.h, because ANSI C says that stdio.h is not supposed to define
  63    va_list.  stdio.h needs to have access to that data type,
  64    but must not use that name.  It should use the name __gnuc_va_list,
  65    which is safe because it is reserved for the implementation.  */
  66
  67 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
  68 #undef _VA_LIST
  69 #endif
  70
  71 #ifdef _BSD_VA_LIST
  72 #undef _BSD_VA_LIST
  73 #endif
  74
  75 #if defined(__svr4__) || (defined(_SCO_DS) && !defined(__VA_LIST))
  76 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
  77    so we must avoid testing it and setting it here.
  78    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
  79    have no conflict with that.  */
  80 #ifndef _VA_LIST_
  81 #define _VA_LIST_
  82 #ifdef __i860__
  83 #ifndef _VA_LIST
  84 #define _VA_LIST va_list
  85 #endif
  86 #endif /* __i860__ */
  87 typedef __gnuc_va_list va_list;
  88 #ifdef _SCO_DS
  89 #define __VA_LIST
  90 #endif
  91 #endif /* _VA_LIST_ */
  92 #else /* not __svr4__ || _SCO_DS */
  93
  94 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
  95    But on BSD NET2 we must not test or define or undef it.
  96    (Note that the comments in NET 2's ansi.h
  97    are incorrect for _VA_LIST_--see stdio.h!)  */
  98 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
  99 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
 100 #ifndef _VA_LIST_DEFINED
 101 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
 102 #ifndef _VA_LIST
 103 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
 104 #ifndef _VA_LIST_T_H
 105 typedef __gnuc_va_list va_list;
 106 #endif /* not _VA_LIST_T_H */
 107 #endif /* not _VA_LIST */
 108 #endif /* not _VA_LIST_DEFINED */
 109 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
 110 #define _VA_LIST_
 111 #endif
 112 #ifndef _VA_LIST
 113 #define _VA_LIST
 114 #endif
 115 #ifndef _VA_LIST_DEFINED
 116 #define _VA_LIST_DEFINED
 117 #endif
 118 #ifndef _VA_LIST_T_H
 119 #define _VA_LIST_T_H
 120 #endif
 121
 122 #endif /* not _VA_LIST_, except on certain systems */
 123
 124 #endif /* not __svr4__ */
 125
 126 #endif /* _STDARG_H */
 127
 128 #endif /* not _ANSI_STDARG_H_ */
 129 #endif /* not _STDARG_H */