2 * Copyright (c) 2002 David E. O'Brien. All rights reserved.
3 * Copyright (c) 2000 Tsubai Masanari. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 * $NetBSD: stdarg.h,v 1.5 2000/02/27 17:50:21 tsubai Exp $
31 #ifndef _MACHINE_STDARG_H_
32 #define _MACHINE_STDARG_H_
34 #include <sys/cdefs.h>
35 #include <sys/_types.h>
37 #ifndef _VA_LIST_DECLARED
38 #define _VA_LIST_DECLARED
39 typedef __va_list va_list;
42 #if defined(__GNUCLIKE_BUILTIN_STDARG)
44 #define va_start(ap, last) \
45 __builtin_va_start((ap), (last))
47 #define va_arg(ap, type) \
48 __builtin_va_arg((ap), type)
50 #if __ISO_C_VISIBLE >= 1999
51 #define va_copy(dest, src) \
52 __builtin_va_copy((dest), (src))
54 #define __va_copy(dest, src) \
55 va_copy((dest), (src))
61 #else /* !__GNUCLIKE_BUILTIN_STDARG */
65 #define va_start(ap, last) ((ap) = *(va_list *)0)
66 #define va_arg(ap, type) (*(type *)(void *)&(ap))
70 #if defined(__GNUC_VA_LIST_COMPATIBILITY)
71 #define va_start(ap, last) \
72 (__builtin_next_arg(last), \
73 __builtin_memcpy((void *)&(ap), __builtin_saveregs (), \
74 sizeof(__gnuc_va_list)))
76 #define va_start(ap, last) \
77 (__builtin_next_arg(last), \
78 (ap).__stack = __va_stack_args, \
79 (ap).__base = __va_reg_args, \
80 (ap).__gpr = __va_first_gpr, \
81 (ap).__fpr = __va_first_fpr)
84 #define __va_first_gpr (__builtin_args_info(0))
85 #define __va_first_fpr (__builtin_args_info(1) - 32 - 1)
86 #define __va_stack_args \
87 ((char *)__builtin_saveregs() + \
88 (__va_first_gpr >= 8 ? __va_first_gpr - 8 : 0) * sizeof(int))
89 #define __va_reg_args \
90 ((char *)__builtin_frame_address(0) + __builtin_args_info(4))
92 #define __INTEGER_TYPE_CLASS 1
93 #define __REAL_TYPE_CLASS 8
94 #define __RECORD_TYPE_CLASS 12
96 #define __va_longlong(type) \
97 (__builtin_classify_type(*(type *)0) == __INTEGER_TYPE_CLASS && \
100 #define __va_double(type) \
101 (__builtin_classify_type(*(type *)0) == __REAL_TYPE_CLASS)
103 #define __va_struct(type) \
104 (__builtin_classify_type(*(type *)0) >= __RECORD_TYPE_CLASS)
106 #define __va_size(type) \
107 ((sizeof(type) + sizeof(int) - 1) / sizeof(int) * sizeof(int))
109 #define __va_savedgpr(ap, type) \
110 ((ap).__base + (ap).__gpr * sizeof(int) - sizeof(type))
112 #define __va_savedfpr(ap, type) \
113 ((ap).__base + 8 * sizeof(int) + (ap).__fpr * sizeof(double) - \
116 #define __va_stack(ap, type) \
117 ((ap).__stack += __va_size(type) + \
118 (__va_longlong(type) ? (int)(ap).__stack & 4 : 0), \
119 (ap).__stack - sizeof(type))
121 #define __va_gpr(ap, type) \
122 ((ap).__gpr += __va_size(type) / sizeof(int) + \
123 (__va_longlong(type) ? (ap).__gpr & 1 : 0), \
124 (ap).__gpr <= 8 ? __va_savedgpr(ap, type) : __va_stack(ap, type))
126 #define __va_fpr(ap, type) \
128 (ap).__fpr <= 8 ? __va_savedfpr(ap, type) : __va_stack(ap, type))
130 #define va_arg(ap, type) \
131 (*(type *)(__va_struct(type) ? (*(void **)__va_gpr(ap, void *)) : \
132 __va_double(type) ? __va_fpr(ap, type) : \
135 #endif /* __lint__ */
139 #if __ISO_C_VISIBLE >= 1999
140 #if !defined(_ANSI_SOURCE) && \
141 (!defined(_POSIX_C_SOURCE) && !defined(_XOPEN_SOURCE) || \
142 defined(_ISOC99_SOURCE) || (__STDC_VERSION__ - 0) >= 199901L)
143 #define va_copy(dest, src) \
148 #endif /* __GNUCLIKE_BUILTIN_STDARG */
150 #endif /* _MACHINE_STDARG_H_ */