xref: /freebsd/sys/arm/include/stdarg.h (revision 1de7b4b805ddbf2429da511c053686ac4591ed89)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 2002 David E. O'Brien.  All rights reserved.
5  * Copyright (c) 1991, 1993
6  *	The Regents of the University of California.  All rights reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  * 1. Redistributions of source code must retain the above copyright
12  *    notice, this list of conditions and the following disclaimer.
13  * 2. Redistributions in binary form must reproduce the above copyright
14  *    notice, this list of conditions and the following disclaimer in the
15  *    documentation and/or other materials provided with the distribution.
16  * 3. Neither the name of the University nor the names of its contributors
17  *    may be used to endorse or promote products derived from this software
18  *    without specific prior written permission.
19  *
20  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30  * SUCH DAMAGE.
31  *
32  *	@(#)stdarg.h	8.1 (Berkeley) 6/10/93
33  * $FreeBSD$
34  */
35 
36 #ifndef _MACHINE_STDARG_H_
37 #define	_MACHINE_STDARG_H_
38 
39 #include <sys/cdefs.h>
40 #include <sys/_types.h>
41 
42 #ifndef _VA_LIST_DECLARED
43 #define	_VA_LIST_DECLARED
44 typedef	__va_list	va_list;
45 #endif
46 
47 #ifdef __GNUCLIKE_BUILTIN_STDARG
48 
49 #define	va_start(ap, last) \
50 	__builtin_va_start((ap), (last))
51 
52 #define	va_arg(ap, type) \
53 	__builtin_va_arg((ap), type)
54 
55 #if __ISO_C_VISIBLE >= 1999
56 #define	va_copy(dest, src) \
57 	__builtin_va_copy((dest), (src))
58 #endif
59 
60 #define	va_end(ap) \
61 	__builtin_va_end(ap)
62 
63 #else	/* !__GNUCLIKE_BUILTIN_STDARG */
64 
65 #define	__va_size(type) \
66 	(((sizeof(type) + sizeof(int) - 1) / sizeof(int)) * sizeof(int))
67 
68 #ifdef __GNUCLIKE_BUILTIN_NEXT_ARG
69 #define va_start(ap, last) \
70 	((ap) = (va_list)__builtin_next_arg(last))
71 #else	/* !__GNUCLIKE_BUILTIN_NEXT_ARG */
72 #define	va_start(ap, last) \
73 	((ap) = (va_list)&(last) + __va_size(last))
74 #endif	/* __GNUCLIKE_BUILTIN_NEXT_ARG */
75 
76 #define	va_arg(ap, type) \
77 	(*(type *)((ap) += __va_size(type), (ap) - __va_size(type)))
78 
79 #define	va_end(ap)
80 
81 #endif /* __GNUCLIKE_BUILTIN_STDARG */
82 
83 #endif /* !_MACHINE_STDARG_H_ */
84