1 /* This is just like the default gvarargs.h
2 except for differences described below. */
4 /* Define __gnuc_va_list. */
10 typedef long long __va_greg;
11 typedef double __va_freg;
13 __va_greg * __va_next_o; /* next available %o* register */
14 __va_greg * __va_next_o_limit; /* past last available %o* register */
15 __va_freg * __va_next_fp; /* next available %f* register */
16 __va_freg * __va_next_fp_limit; /* last available %f* register */
17 __va_greg * __va_next_stack; /* next extended word on stack */
21 /* This has to be a char * to be compatible with Sun.
22 i.e., we have to pass a `va_list' to vsprintf. */
23 typedef char * __gnuc_va_list;
25 /* This has to be a void * to be compatible with Sun svr4.
26 i.e., we have to pass a `va_list' to vsprintf. */
27 typedef void * __gnuc_va_list;
29 #endif /* not __sparc_v9__ */
30 #endif /* not __GNUC_VA_LIST */
32 /* If this is for internal libc use, don't define anything but
34 #if defined (_STDARG_H) || defined (_VARARGS_H)
39 #define va_start(AP, LASTARG) \
42 AP.__va_next_o = (__va_greg *) __builtin_saveregs (); \
43 AP.__va_next_o_limit = (AP.__va_next_o + \
44 (__builtin_args_info (0) < 6 ? 6 - __builtin_args_info (0) : 0)); \
45 AP.__va_next_fp = (__va_freg *) AP.__va_next_o_limit; \
46 AP.__va_next_fp_limit = (AP.__va_next_fp + \
47 (__builtin_args_info (1) < 16 ? (16 - __builtin_args_info (1) + 1) / 2 : 0)); \
48 AP.__va_next_stack = (__va_greg *) __builtin_next_arg (LASTARG); \
51 /* Call __builtin_next_arg even though we aren't using its value, so that
52 we can verify that LASTARG is correct. */
53 #ifdef __GCC_NEW_VARARGS__
54 #define va_start(AP, LASTARG) \
55 (__builtin_next_arg (LASTARG), AP = (char *) __builtin_saveregs ())
57 #define va_start(AP, LASTARG) \
58 (__builtin_saveregs (), AP = ((char *) __builtin_next_arg (LASTARG)))
60 #endif /* not __sparc_v9__ */
64 #define va_alist __builtin_va_alist
65 #define va_dcl int __builtin_va_alist;...
68 #define va_start(AP) \
71 AP.__va_next_o = (__va_greg *) __builtin_saveregs (); \
72 AP.__va_next_o_limit = (AP.__va_next_o + \
73 (__builtin_args_info (0) < 6 ? 6 - __builtin_args_info (0) : 0)); \
74 AP.__va_next_fp = (__va_freg *) AP.__va_next_o_limit; \
75 AP.__va_next_fp_limit = (AP.__va_next_fp + \
76 (__builtin_args_info (1) < 16 ? (16 - __builtin_args_info (1) + 1) / 2 : 0)); \
77 AP.__va_next_stack = (__va_greg *) __builtin_next_arg (__builtin_va_alist); \
80 #ifdef __GCC_NEW_VARARGS__
81 #define va_start(AP) ((AP) = (char *) __builtin_saveregs ())
83 #define va_start(AP) \
84 (__builtin_saveregs (), (AP) = ((char *) &__builtin_va_alist))
86 #endif /* not __sparc_v9__ */
91 void va_end (__gnuc_va_list); /* Defined in libgcc.a */
93 /* Values returned by __builtin_classify_type. */
95 enum __va_type_classes {
100 __enumeral_type_class,
101 __boolean_type_class,
102 __pointer_type_class,
103 __reference_type_class,
106 __complex_type_class,
107 __function_type_class,
119 #define va_end(pvar) ((void)0)
121 /* Avoid errors if compiling GCC v2 with GCC v1. */
123 #define __extension__
126 /* RECORD_TYPE args passed using the C calling convention are
127 passed by invisible reference. ??? RECORD_TYPE args passed
128 in the stack are made to be word-aligned; for an aggregate that is
129 not word-aligned, we advance the pointer to the first non-reg slot. */
133 #define va_arg(pvar,TYPE) \
135 (*({int __type = __builtin_classify_type (* (TYPE *) 0); \
137 if (__type == __real_type_class) /* float? */ \
140 /* see PASS_IN_REG_P in gcc's sparc.h */ \
141 if (pvar.__va_next_fp < pvar.__va_next_fp_limit \
142 && ((__r = (__va_freg *) (((__va_greg) pvar.__va_next_fp + sizeof (TYPE) - 1) & ~(__va_greg) (sizeof (TYPE) - 1))) \
143 < pvar.__va_next_fp_limit)) \
145 pvar.__va_next_fp = __r + (sizeof (TYPE) + 7) / 8; \
149 __r = (__va_freg *) pvar.__va_next_stack; \
150 pvar.__va_next_stack += (sizeof (TYPE) + 7) / 8; \
154 else if (__type < __record_type_class) /* integer? */ \
157 if (pvar.__va_next_o < pvar.__va_next_o_limit) \
158 __r = pvar.__va_next_o++; \
160 __r = pvar.__va_next_stack++; \
161 /* adjust for 4 byte ints */ \
162 __result = (char *) __r + 8 - sizeof (TYPE); \
164 else /* aggregate object */ \
167 if (pvar.__va_next_o < pvar.__va_next_o_limit) \
168 __r = (void **) pvar.__va_next_o++; \
170 __r = (void **) pvar.__va_next_stack++; \
173 (TYPE *) __result;}))
175 #else /* not __sparc_v9__ */
177 #define __va_rounded_size(TYPE) \
178 (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
180 /* We don't declare the union member `d' to have type TYPE
181 because that would lose in C++ if TYPE has a constructor. */
182 /* We cast to void * and then to TYPE * because this avoids
183 a warning about increasing the alignment requirement.
184 The casts to char * avoid warnings about invalid pointer arithmetic. */
185 #define va_arg(pvar,TYPE) \
187 (*({((__builtin_classify_type (*(TYPE*) 0) >= __record_type_class \
188 || (__builtin_classify_type (*(TYPE*) 0) == __real_type_class \
189 && sizeof (TYPE) == 16)) \
190 ? ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE *), \
191 *(TYPE **) (void *) ((char *)(pvar) - __va_rounded_size (TYPE *))) \
192 : __va_rounded_size (TYPE) == 8 \
193 ? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u; \
194 __u.__i[0] = ((int *) (void *) (pvar))[0]; \
195 __u.__i[1] = ((int *) (void *) (pvar))[1]; \
196 (pvar) = (char *)(pvar) + 8; \
197 (TYPE *) (void *) __u.__d; }) \
198 : ((pvar) = (char *)(pvar) + __va_rounded_size (TYPE), \
199 ((TYPE *) (void *) ((char *)(pvar) - __va_rounded_size (TYPE)))));}))
200 #endif /* not __sparc_v9__ */
202 #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */