1 /* GNU C varargs support for the Intel 80960. */ 2 3 /* Define __gnuc_va_list. */ 4 5 #ifndef __GNUC_VA_LIST 6 #define __GNUC_VA_LIST 7 /* The first element is the address of the first argument. 8 The second element is the number of bytes skipped past so far. */ 9 typedef unsigned __gnuc_va_list[2]; 10 #endif /* not __GNUC_VA_LIST */ 11 12 /* If this is for internal libc use, don't define anything but 13 __gnuc_va_list. */ 14 #if defined (_STDARG_H) || defined (_VARARGS_H) 15 16 /* In GCC version 2, we want an ellipsis at the end of the declaration 17 of the argument list. GCC version 1 can't parse it. */ 18 19 #if __GNUC__ > 1 20 #define __va_ellipsis ... 21 #else 22 #define __va_ellipsis 23 #endif 24 25 /* The stack size of the type t. */ 26 #define __vsiz(T) (((sizeof (T) + 3) / 4) * 4) 27 /* The stack alignment of the type t. */ 28 #define __vali(T) (__alignof__ (T) >= 4 ? __alignof__ (T) : 4) 29 /* The offset of the next stack argument after one of type t at offset i. */ 30 #define __vpad(I, T) ((((I) + __vali (T) - 1) / __vali (T)) \ 31 * __vali (T) + __vsiz (T)) 32 33 /* Avoid errors if compiling GCC v2 with GCC v1. */ 34 #if __GNUC__ == 1 35 #define __extension__ 36 #endif 37 38 #ifdef _STDARG_H 39 /* Call __builtin_next_arg even though we aren't using its value, so that 40 we can verify that firstarg is correct. */ 41 #define va_start(AP, LASTARG) \ 42 __extension__ \ 43 ({ __builtin_next_arg (LASTARG); \ 44 __asm__ ("st g14,%0" : "=m" (*(AP))); \ 45 (AP)[1] = (__builtin_args_info (0) + __builtin_args_info (1)) * 4; }) 46 47 #else 48 49 #define va_alist __builtin_va_alist 50 #define va_dcl char *__builtin_va_alist; __va_ellipsis 51 #define va_start(AP) \ 52 __extension__ \ 53 ({ __asm__ ("st g14,%0" : "=m" (*(AP))); \ 54 (AP)[1] = (__builtin_args_info (0) + __builtin_args_info (1)) * 4; }) 55 #endif 56 57 /* We cast to void * and then to TYPE * because this avoids 58 a warning about increasing the alignment requirement. */ 59 #define va_arg(AP, T) \ 60 ( \ 61 ( \ 62 ((AP)[1] <= 48 && (__vpad ((AP)[1], T) > 48 || __vsiz (T) > 16)) \ 63 ? ((AP)[1] = 48 + __vsiz (T)) \ 64 : ((AP)[1] = __vpad ((AP)[1], T)) \ 65 ), \ 66 \ 67 *((T *) (void *) ((char *) *(AP) + (AP)[1] - __vsiz (T))) \ 68 ) 69 70 #ifndef va_end 71 void va_end (__gnuc_va_list); /* Defined in libgcc.a */ 72 #endif 73 #define va_end(AP) ((void) 0) 74 75 /* Copy __gnuc_va_list into another variable of this type. */ 76 #define __va_copy(dest, src) (dest) = (src) 77 78 #endif /* defined (_STDARG_H) || defined (_VARARGS_H) */ 79 80