git://gcc.gnu.org / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 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. */ | |
| 7436f435 RS |
62 | /* We cast to void * and then to TYPE * because this avoids |
| 63 | a warning about increasing the alignment requirement. */ | |
| f3db20a3 | 64 | #define va_arg(pvar,TYPE) \ |
| e13d81d0 | 65 | __extension__ \ |
| f3db20a3 RS |
66 | ({ TYPE __va_temp; \ |
| 67 | ((__builtin_classify_type (__va_temp) >= 12) \ | |
| 68 | ? ((pvar) += __va_rounded_size (TYPE *), \ | |
| 5840cf94 | 69 | **(TYPE **) ((pvar) - __va_rounded_size (TYPE *))) \ |
| 81359be5 | 70 | : __va_rounded_size (TYPE) == 8 \ |
| 5c96a037 RS |
71 | ? ({ union {char __d[sizeof (TYPE)]; int __i[2];} __u; \ |
| 72 | __u.__i[0] = ((int *) (pvar))[0]; \ | |
| 73 | __u.__i[1] = ((int *) (pvar))[1]; \ | |
| 81359be5 | 74 | (pvar) += 8; \ |
| 7436f435 | 75 | *(TYPE *) (void *) __u.__d; }) \ |
| 5840cf94 | 76 | : ((pvar) += __va_rounded_size (TYPE), \ |
| 7436f435 | 77 | *((TYPE *) (void *) ((pvar) - __va_rounded_size (TYPE)))));}) |
| 59d52763 CH |
78 | |
| 79 | #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */ | |
| 80 |