2 * Copyright (c) 2002 David E. O'Brien. All rights reserved.
3 * Copyright (c) 1990, 1993
4 * The Regents of the University of California. All rights reserved.
5 * (c) UNIX System Laboratories, Inc.
6 * All or some portions of this file are derived from material licensed
7 * to the University of California by American Telephone and Telegraph
8 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
9 * the permission of UNIX System Laboratories, Inc.
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12 * modification, are permitted provided that the following conditions
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15 * notice, this list of conditions and the following disclaimer.
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20 * must display the following acknowledgement:
21 * This product includes software developed by the University of
22 * California, Berkeley and its contributors.
23 * 4. Neither the name of the University nor the names of its contributors
24 * may be used to endorse or promote products derived from this software
25 * without specific prior written permission.
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39 * @(#)varargs.h 8.2 (Berkeley) 3/22/94
40 * $FreeBSD: src/sys/amd64/include/varargs.h,v 1.14 2005/03/11 22:16:09 peter Exp $
41 * $DragonFly: src/sys/cpu/amd64/include/varargs.h,v 1.1 2007/08/21 19:40:24 corecode Exp $
44 #ifndef _CPU_VARARGS_H_
45 #define _CPU_VARARGS_H_
49 typedef __va_list va_list;
51 typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));
53 #define va_alist __builtin_va_alist
54 #define va_dcl __builtin_va_alist_t __builtin_va_alist; ...
55 #define va_start(ap) __builtin_varargs_start(ap)
56 #define va_arg(ap, type) __builtin_va_arg((ap), type)
57 #define va_end(ap) __builtin_va_end(ap)
61 typedef char *va_list;
63 #define __va_size(type) \
64 (((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
66 #define va_dcl int va_alist; ...
68 #define va_start(ap) \
69 ((ap) = (va_list)&va_alist)
71 #define va_arg(ap, type) \
72 (*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
78 #endif /* !_CPU_VARARGS_H_ */