1 /* Define __gnuc_va_list. */ 2 3 #ifndef __GNUC_VA_LIST 4 #define __GNUC_VA_LIST 5 typedef void *__gnuc_va_list; 6 #endif /* not __GNUC_VA_LIST */ 7 8 /* If this is for internal libc use, don't define anything but 9 __gnuc_va_list. */ 10 #if defined (_STDARG_H) || defined (_VARARGS_H) 11 #define __gnuc_va_start(AP) (AP = (__gnuc_va_list)__builtin_saveregs()) 12 #define __va_ellipsis ... 13 14 #ifdef _STDARG_H 15 #define va_start(AP, LASTARG) \ 16 (__builtin_next_arg (LASTARG), __gnuc_va_start (AP)) 17 #else 18 #define va_alist __builtin_va_alist 19 #define va_dcl int __builtin_va_alist; __va_ellipsis 20 #define va_start(AP) AP=(char *) &__builtin_va_alist 21 #endif 22 23 /* Now stuff common to both varargs & stdarg implementations. */ 24 #define __va_rounded_size(TYPE) \ 25 (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int)) 26 #undef va_end 27 void va_end (__gnuc_va_list); 28 #define va_end(AP) ((void)0) 29 #define va_arg(AP, TYPE) \ 30 (sizeof (TYPE) > 8 \ 31 ? (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (char *)),\ 32 **((TYPE **) (void *) ((char *) (AP) - __va_rounded_size (char *))))\ 33 : (AP = (__gnuc_va_list) ((char *) (AP) + __va_rounded_size (TYPE)), \ 34 *((TYPE *) (void *) ((char *) (AP) - __va_rounded_size (TYPE))))) 35 #endif 36