1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/* This is just like the default gvarargs.h
except for differences described below. */
/* Define __gnuc_va_list. */
#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
#if ! defined (__svr4__) && ! defined (__linux__) && ! defined (__arch64__)
/* This has to be a char * to be compatible with Sun.
i.e., we have to pass a `va_list' to vsprintf. */
typedef char * __gnuc_va_list;
#else
/* This has to be a void * to be compatible with Sun svr4.
i.e., we have to pass a `va_list' to vsprintf. */
typedef void * __gnuc_va_list;
#endif
#endif /* not __GNUC_VA_LIST */
/* If this is for internal libc use, don't define anything but
__gnuc_va_list. */
#if defined (_STDARG_H) || defined (_VARARGS_H)
#ifdef _STDARG_H
/* Call __builtin_next_arg even though we aren't using its value, so that
we can verify that LASTARG is correct. */
#if defined (__GCC_NEW_VARARGS__) || defined (__arch64__)
#define va_start(AP, LASTARG) \
(__builtin_next_arg (LASTARG), AP = (char *) __builtin_saveregs ())
#else
#define va_start(AP, LASTARG) \
(__builtin_saveregs (), AP = ((char *) __builtin_next_arg (LASTARG)))
#endif
#else
#define va_alist __builtin_va_alist
#define va_dcl int __builtin_va_alist;...
#if defined (__GCC_NEW_VARARGS__) || defined (__arch64__)
#define va_start(AP) ((AP) = (char *) __builtin_saveregs ())
#else
#define va_start(AP) \
(__builtin_saveregs (), (AP) = ((char *) &__builtin_va_alist))
#endif
#endif
#ifndef va_end
void va_end (__gnuc_va_list); /* Defined in libgcc.a */
/* Values returned by __builtin_classify_type. */
enum __va_type_classes {
__no_type_class = -1,
__void_type_class,
__integer_type_class,
__char_type_class,
__enumeral_type_class,
__boolean_type_class,
__pointer_type_class,
__reference_type_class,
__offset_type_class,
__real_type_class,
__complex_type_class,
__function_type_class,
__method_type_class,
__record_type_class,
__union_type_class,
__array_type_class,
__string_type_class,
__set_type_class,
__file_type_class,
__lang_type_class
};
#endif
#define va_end(pvar) ((void)0)
/* Avoid errors if compiling GCC v2 with GCC v1. */
#if __GNUC__ == 1
#define __extension__
#endif
/* RECORD_TYPE args passed using the C calling convention are
passed by invisible reference. ??? RECORD_TYPE args passed
in the stack are made to be word-aligned; for an aggregate that is
not word-aligned, we advance the pointer to the first non-reg slot. */
#ifdef __arch64__
typedef unsigned int __ptrint __attribute__ ((__mode__ (__DI__)));
/* ??? TODO: little endian support */
#define va_arg(pvar, TYPE) \
__extension__ \
(*({int __type = __builtin_classify_type (* (TYPE *) 0); \
char * __result; \
if (__type == __real_type_class) /* float? */ \
{ \
if (__alignof__ (TYPE) == 16) \
(pvar) = (void *) (((__ptrint) (pvar) + 15) & -16); \
__result = (pvar); \
(pvar) = (char *) (pvar) + sizeof (TYPE); \
} \
else if (__type < __record_type_class) /* integer? */ \
{ \
(pvar) = (char *) (pvar) + 8; \
__result = (char *) (pvar) - sizeof (TYPE); \
} \
else /* aggregate object */ \
{ \
if (sizeof (TYPE) <= 8) \
{ \
__result = (pvar); \
(pvar) = (char *) (pvar) + 8; \
} \
else if (sizeof (TYPE) <= 16) \
{ \
if (__alignof__ (TYPE) == 16) \
(pvar) = (void *) (((__ptrint) (pvar) + 15) & -16); \
__result = (pvar); \
(pvar) = (char *) (pvar) + 16; \
} \
else \
{ \
__result = * (void **) (pvar); \
(pvar) = (char *) (pvar) + 8; \
} \
} \
(TYPE *) __result;}))
#else /* not __arch64__ */
#define __va_rounded_size(TYPE) \
(((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
/* We don't declare the union member `d' to have type TYPE
because that would lose in C++ if TYPE has a constructor. */
/* We cast to void * and then to TYPE * because this avoids
a warning about increasing the alignment requirement.
The casts to char * avoid warnings about invalid pointer arithmetic. */
#define va_arg(pvar,TYPE) \
__extension__ \
(*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
|| (__builtin_classify_type (*(TYPE*) 0) == __real_type_class \
&& sizeof (TYPE) == 16)) \
? ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE *), \
*(TYPE **) (void *) ((char *)(pvar) - __va_rounded_size (TYPE *))) \
: __va_rounded_size (TYPE) == 8 \
? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u; \
__u.__i[0] = ((int *) (void *) (pvar))[0]; \
__u.__i[1] = ((int *) (void *) (pvar))[1]; \
(pvar) = (char *)(pvar) + 8; \
(TYPE *) (void *) __u.__d; }) \
: ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE), \
((TYPE *) (void *) ((char *)(pvar) - __va_rounded_size (TYPE)))));}))
#endif /* not __arch64__ */
/* Copy __gnuc_va_list into another variable of this type. */
#define __va_copy(dest, src) (dest) = (src)
#endif /* defined (_STDARG_H) || defined (_VARARGS_H) */
|
