osfmk/libsa/i386/stdarg.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
   5  *
   6  * This file contains Original Code and/or Modifications of Original Code
   7  * as defined in and that are subject to the Apple Public Source License
   8  * Version 2.0 (the 'License'). You may not use this file except in
   9  * compliance with the License. The rights granted to you under the License
  10  * may not be used to create, or enable the creation or redistribution of,
  11  * unlawful or unlicensed copies of an Apple operating system, or to
  12  * circumvent, violate, or enable the circumvention or violation of, any
  13  * terms of an Apple operating system software license agreement.
  14  *
  15  * Please obtain a copy of the License at
  16  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  17  *
  18  * The Original Code and all software distributed under the License are
  19  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  20  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  21  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  22  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  23  * Please see the License for the specific language governing rights and
  24  * limitations under the License.
  25  *
  26  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  27  */
  28 /*
  29  * @OSF_COPYRIGHT@
  30  *
  31  */
  32 /*
  33  * HISTORY
  34  *
  35  * Revision 1.2  1998/09/30 21:21:00  wsanchez
  36  * Merged in IntelMerge1 (mburg: Intel support)
  37  *
  38  * Revision 1.1.2.1  1998/09/30 18:19:49  mburg
  39  * Changes for Intel port
  40  *
  41  * Revision 1.1.1.1  1998/03/07 02:25:36  wsanchez
  42  * Import of OSF Mach kernel (~mburg)
  43  *
  44  * Revision 1.1.2.1  1996/09/17  16:56:26  bruel
  45  *      created from standalone mach servers
  46  *      [1996/09/17  16:18:07  bruel]
  47  *
  48  * $EndLog$
  49  */
  50
  51 #ifndef _MACHINE_STDARG_H
  52 #define _MACHINE_STDARG_H
  53
  54 #include <machine/va_list.h>
  55
  56 /* Amount of space required in an argument list for an arg of type TYPE.
  57    TYPE may alternatively be an expression whose type is used.  */
  58
  59 #define __va_rounded_size(TYPE)  \
  60   (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
  61
  62 #define va_start(AP, LASTARG)                                           \
  63  (AP = ((char *) &(LASTARG) + __va_rounded_size (LASTARG)))
  64
  65 void va_end (va_list);          /* Defined in gnulib */
  66 #define va_end(AP)
  67
  68 #define va_arg(AP, mode)                                        \
  69                   (AP += __va_rounded_size (mode),              \
  70                    *((mode *) (AP - __va_rounded_size (mode))))
  71
  72 #endif /* _MACHINE_STDARG_H */