The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/EXTERNAL_HEADERS/stdarg.h

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    1 /* Copyright (C) 1989, 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
    2 
    3 This file is part of GCC.
    4 
    5 GCC 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 GCC 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 GCC; 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 #define va_start(v,l)   __builtin_va_start(v,l)
   51 #define va_end(v)       __builtin_va_end(v)
   52 #define va_arg(v,l)     __builtin_va_arg(v,l)
   53 #if !defined(__STRICT_ANSI__) || __STDC_VERSION__ + 0 >= 199900L
   54 #define va_copy(d,s)    __builtin_va_copy(d,s)
   55 #endif
   56 #define __va_copy(d,s)  __builtin_va_copy(d,s)
   57 
   58 /* Define va_list, if desired, from __gnuc_va_list. */
   59 /* We deliberately do not define va_list when called from
   60    stdio.h, because ANSI C says that stdio.h is not supposed to define
   61    va_list.  stdio.h needs to have access to that data type, 
   62    but must not use that name.  It should use the name __gnuc_va_list,
   63    which is safe because it is reserved for the implementation.  */
   64 
   65 #ifdef _HIDDEN_VA_LIST  /* On OSF1, this means varargs.h is "half-loaded".  */
   66 #undef _VA_LIST
   67 #endif
   68 
   69 #ifdef _BSD_VA_LIST
   70 #undef _BSD_VA_LIST
   71 #endif
   72 
   73 #if defined(__svr4__) || (defined(_SCO_DS) && !defined(__VA_LIST))
   74 /* SVR4.2 uses _VA_LIST for an internal alias for va_list,
   75    so we must avoid testing it and setting it here.
   76    SVR4 uses _VA_LIST as a flag in stdarg.h, but we should
   77    have no conflict with that.  */
   78 #ifndef _VA_LIST_
   79 #define _VA_LIST_
   80 #ifdef __i860__
   81 #ifndef _VA_LIST
   82 #define _VA_LIST va_list
   83 #endif
   84 #endif /* __i860__ */
   85 typedef __gnuc_va_list va_list;
   86 #ifdef _SCO_DS
   87 #define __VA_LIST
   88 #endif
   89 #endif /* _VA_LIST_ */
   90 #else /* not __svr4__ || _SCO_DS */
   91 
   92 /* The macro _VA_LIST_ is the same thing used by this file in Ultrix.
   93    But on BSD NET2 we must not test or define or undef it.
   94    (Note that the comments in NET 2's ansi.h
   95    are incorrect for _VA_LIST_--see stdio.h!)  */
   96 #if !defined (_VA_LIST_) || defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__) || defined(WINNT)
   97 /* The macro _VA_LIST_DEFINED is used in Windows NT 3.5  */
   98 #ifndef _VA_LIST_DEFINED
   99 /* The macro _VA_LIST is used in SCO Unix 3.2.  */
  100 #ifndef _VA_LIST
  101 /* The macro _VA_LIST_T_H is used in the Bull dpx2  */
  102 #ifndef _VA_LIST_T_H
  103 /* The macro __va_list__ is used by BeOS.  */
  104 #ifndef __va_list__
  105 typedef __gnuc_va_list va_list;
  106 #endif /* not __va_list__ */
  107 #endif /* not _VA_LIST_T_H */
  108 #endif /* not _VA_LIST */
  109 #endif /* not _VA_LIST_DEFINED */
  110 #if !(defined (__BSD_NET2__) || defined (____386BSD____) || defined (__bsdi__) || defined (__sequent__) || defined (__FreeBSD__))
  111 #define _VA_LIST_
  112 #endif
  113 #ifndef _VA_LIST
  114 #define _VA_LIST
  115 #endif
  116 #ifndef _VA_LIST_DEFINED
  117 #define _VA_LIST_DEFINED
  118 #endif
  119 #ifndef _VA_LIST_T_H
  120 #define _VA_LIST_T_H
  121 #endif
  122 #ifndef __va_list__
  123 #define __va_list__
  124 #endif
  125 
  126 #endif /* not _VA_LIST_, except on certain systems */
  127 
  128 #endif /* not __svr4__ */
  129 
  130 #endif /* _STDARG_H */
  131 
  132 #endif /* not _ANSI_STDARG_H_ */
  133 #endif /* not _STDARG_H */

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