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Diffstat (limited to 'include/vadefs.h')
| -rw-r--r-- | include/vadefs.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/include/vadefs.h b/include/vadefs.h new file mode 100644 index 0000000..a686074 --- /dev/null +++ b/include/vadefs.h @@ -0,0 +1,131 @@ +/* + * This file has been modified for the cdrkit suite. + * + * The behaviour and appearence of the program code below can differ to a major + * extent from the version distributed by the original author(s). + * + * For details, see Changelog file distributed with the cdrkit package. If you + * received this file from another source then ask the distributing person for + * a log of modifications. + * + */ + +/* @(#)vadefs.h 1.5 01/07/15 Copyright 1998 J. Schilling */ +/* + * Generic header for users of var args ... + * + * Includes a default definition for va_copy() + * and some magic know how about the SVr4 Power PC var args ABI + * to create a __va_arg_list() macro. + * + * Copyright (c) 1998 J. Schilling + */ +/* + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 + * as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along with + * this program; see the file COPYING. If not, write to the Free Software + * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +#ifndef _VADEFS_H +#define _VADEFS_H + +#ifndef _MCONFIG_H +#include <mconfig.h> +#endif + +#ifdef PROTOTYPES +/* + * For ANSI C-compilers prefer stdarg.h + */ +# ifdef HAVE_STDARG_H +# ifndef _INCL_STDARG_H +# include <stdarg.h> +# define _INCL_STDARG_H +# endif +# else +# ifndef _INCL_VARARGS_H +# include <varargs.h> +# define _INCL_VARARGS_H +# endif +# endif +#else +/* + * For K&R C-compilers prefer varargs.h + */ +# ifdef HAVE_VARARGS_H +# ifndef _INCL_VARARGS_H +# include <varargs.h> +# define _INCL_VARARGS_H +# endif +# else +# ifndef _INCL_STDARG_H +# include <stdarg.h> +# define _INCL_STDARG_H +# endif +# endif +#endif + +#if (defined(__linux__) || defined(__linux) || defined(sun)) && \ + (defined(__ppc) || defined(__PPC) || defined(powerpc) || defined(__powerpc__)) + +# ifndef VA_LIST_IS_ARRAY +# define VA_LIST_IS_ARRAY +# endif +#endif + + +/* + * __va_copy() is used by GCC 2.8 or newer until va_copy() becomes + * a final ISO standard. + */ +#if !defined(va_copy) && !defined(HAVE_VA_COPY) +# if defined(__va_copy) +# define va_copy(to, from) __va_copy(to, from) +# endif +#endif + +/* + * va_copy() is a Solaris extension to provide a portable way to perform a + * variable argument list "bookmarking" function. + * If it is not available via stdarg.h, use a simple assignement for backward + * compatibility. + */ +#if !defined(va_copy) && !defined(HAVE_VA_COPY) +#ifdef VA_LIST_IS_ARRAY +# define va_copy(to, from) ((to)[0] = (from)[0]) +#else +# define va_copy(to, from) ((to) = (from)) +#endif +#endif + +/* + * I don't know any portable way to get an arbitrary + * C object from a var arg list so I use a + * system-specific routine __va_arg_list() that knows + * if 'va_list' is an array. You will not be able to + * assign the value of __va_arg_list() but it works + * to be used as an argument of a function. + * It is a requirement for recursive printf to be able + * to use this function argument. If your system + * defines va_list to be an array you need to know this + * via autoconf or another mechanism. + * It would be nice to have something like + * __va_arg_list() in stdarg.h + */ + +#ifdef VA_LIST_IS_ARRAY +# define __va_arg_list(list) va_arg(list, void *) +#else +# define __va_arg_list(list) va_arg(list, va_list) +#endif + +#endif /* _VADEFS_H */ |