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Annotation of sys/sys/varargs.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: varargs.h,v 1.2 2004/01/03 14:55:34 espie Exp $ */
        !             2: /*
        !             3:  * Copyright (c) 2003, 2004  Marc espie <espie@openbsd.org>
        !             4:  *
        !             5:  * Permission to use, copy, modify, and distribute this software for any
        !             6:  * purpose with or without fee is hereby granted, provided that the above
        !             7:  * copyright notice and this permission notice appear in all copies.
        !             8:  *
        !             9:  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
        !            10:  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
        !            11:  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
        !            12:  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
        !            13:  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
        !            14:  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
        !            15:  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
        !            16:  */
        !            17:
        !            18: #ifndef _VARARGS_H_
        !            19: #define _VARARGS_H_
        !            20:
        !            21: #if defined(__GNUC__) && __GNUC__ >= 3
        !            22: /* These macros implement traditional (non-ANSI) varargs
        !            23:    for GNU C.  */
        !            24:
        !            25: #define va_alist  __builtin_va_alist
        !            26:
        !            27: #define        __va_ellipsis   ...
        !            28:
        !            29: /* ??? We don't process attributes correctly in K&R argument context.  */
        !            30: typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));
        !            31:
        !            32: /* ??? It would be nice to get rid of the ellipsis here.  It causes
        !            33:    current_function_varargs to be set in cc1.  */
        !            34: #define va_dcl         __builtin_va_alist_t __builtin_va_alist; ...
        !            35:
        !            36: /* Define __gnuc_va_list, just as in stdarg.h.  */
        !            37:
        !            38: #ifndef __GNUC_VA_LIST
        !            39: #define __GNUC_VA_LIST
        !            40: typedef __builtin_va_list __gnuc_va_list;
        !            41: #endif
        !            42:
        !            43: #define va_start(v)    __builtin_varargs_start((v))
        !            44: #define va_end         __builtin_va_end
        !            45: #define va_arg         __builtin_va_arg
        !            46: #define __va_copy(d,s) __builtin_va_copy((d),(s))
        !            47:
        !            48: /* Define va_list from __gnuc_va_list.  */
        !            49:
        !            50: typedef __gnuc_va_list va_list;
        !            51:
        !            52: #else
        !            53: #include <machine/varargs.h>
        !            54: #endif
        !            55:
        !            56: #endif /* _VARARGS_H_ */