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Commit | Line | Data |
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f3db20a3 | 1 | /* This is just like the default gvarargs.h |
6dc42e49 | 2 | except for differences described below. */ |
f3db20a3 | 3 | |
59d52763 CH |
4 | /* Define __gnuc_va_list. */ |
5 | ||
6 | #ifndef __GNUC_VA_LIST | |
7 | #define __GNUC_VA_LIST | |
8 | ||
69d6c854 | 9 | #ifndef __svr4__ |
f3db20a3 RS |
10 | /* This has to be a char * to be compatible with Sun. |
11 | i.e., we have to pass a `va_list' to vsprintf. */ | |
59d52763 | 12 | typedef char * __gnuc_va_list; |
69d6c854 RS |
13 | #else |
14 | /* This has to be a void * to be compatible with Sun svr4. | |
15 | i.e., we have to pass a `va_list' to vsprintf. */ | |
59d52763 | 16 | typedef void * __gnuc_va_list; |
69d6c854 | 17 | #endif |
59d52763 CH |
18 | #endif /* not __GNUC_VA_LIST */ |
19 | ||
20 | /* If this is for internal libc use, don't define anything but | |
21 | __gnuc_va_list. */ | |
22 | #if defined (_STDARG_H) || defined (_VARARGS_H) | |
f3db20a3 RS |
23 | |
24 | /* In GCC version 2, we want an ellipsis at the end of the declaration | |
25 | of the argument list. GCC version 1 can't parse it. */ | |
26 | ||
27 | #if __GNUC__ > 1 | |
28 | #define __va_ellipsis ... | |
29 | #else | |
30 | #define __va_ellipsis | |
31 | #endif | |
32 | ||
5840cf94 JW |
33 | #ifdef _STDARG_H |
34 | #define va_start(AP, LASTARG) \ | |
35 | (__builtin_saveregs (), AP = ((char *) __builtin_next_arg ())) | |
36 | #else | |
168c4006 RS |
37 | #define va_alist __builtin_va_alist |
38 | /* The ... causes current_function_varargs to be set in cc1. */ | |
39 | #define va_dcl int __builtin_va_alist; __va_ellipsis | |
40 | ||
f3db20a3 RS |
41 | #define va_start(AP) \ |
42 | (__builtin_saveregs (), (AP) = ((char *) &__builtin_va_alist)) | |
5840cf94 JW |
43 | #endif |
44 | ||
59d52763 | 45 | void va_end (__gnuc_va_list); /* Defined in libgcc.a */ |
f3db20a3 RS |
46 | #define va_end(pvar) |
47 | ||
48 | #define __va_rounded_size(TYPE) \ | |
49 | (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) | |
50 | ||
cc8995d5 RS |
51 | /* Avoid errors if compiling GCC v2 with GCC v1. */ |
52 | #if __GNUC__ == 1 | |
53 | #define __extension__ | |
54 | #endif | |
55 | ||
f3db20a3 RS |
56 | /* RECORD_TYPE args passed using the C calling convention are |
57 | passed by invisible reference. ??? RECORD_TYPE args passed | |
58 | in the stack are made to be word-aligned; for an aggregate that is | |
59 | not word-aligned, we advance the pointer to the first non-reg slot. */ | |
5c96a037 RS |
60 | /* We don't declare the union member `d' to have type TYPE |
61 | because that would lose in C++ if TYPE has a constructor. */ | |
f3db20a3 | 62 | #define va_arg(pvar,TYPE) \ |
e13d81d0 | 63 | __extension__ \ |
f3db20a3 RS |
64 | ({ TYPE __va_temp; \ |
65 | ((__builtin_classify_type (__va_temp) >= 12) \ | |
66 | ? ((pvar) += __va_rounded_size (TYPE *), \ | |
5840cf94 | 67 | **(TYPE **) ((pvar) - __va_rounded_size (TYPE *))) \ |
81359be5 | 68 | : __va_rounded_size (TYPE) == 8 \ |
5c96a037 RS |
69 | ? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u; \ |
70 | __u.__i[0] = ((int *) (pvar))[0]; \ | |
71 | __u.__i[1] = ((int *) (pvar))[1]; \ | |
81359be5 | 72 | (pvar) += 8; \ |
5c96a037 | 73 | *(TYPE *)__u.__d; }) \ |
5840cf94 | 74 | : ((pvar) += __va_rounded_size (TYPE), \ |
f3db20a3 | 75 | *((TYPE *) ((pvar) - __va_rounded_size (TYPE)))));}) |
59d52763 CH |
76 | |
77 | #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */ | |
78 |