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- /*
- * varargs.h --
- *
- * Macros for handling variable-length argument lists.
- *
- * Copyright 1988 Regents of the University of California
- * Permission to use, copy, modify, and distribute this
- * software and its documentation for any purpose and without
- * fee is hereby granted, provided that the above copyright
- * notice appear in all copies. The University of California
- * makes no representations about the suitability of this
- * software for any purpose. It is provided "as is" without
- * express or implied warranty.
- *
- * $Header: /sprite/src/lib/include/sun4.md/RCS/varargs.h,v 1.4 91/02/01 16:24:28 rab Exp $ SPRITE (Berkeley)
- */
-
- #ifndef _VARARGS
- #define _VARARGS
-
- #ifndef _VA_LIST
- #define _VA_LIST
- typedef char *va_list;
- #endif
-
- /*
- * An argument of list of __builtin_va_alist causes the sun4 compiler
- * to store all the input registers, %i0 to %i5, in the stack frame
- * so the var_arg() macro will be able to reference them in memory.
- */
- #define va_alist __builtin_va_alist
-
- #define va_dcl int __builtin_va_alist;
-
- #define va_start(AP) (__builtin_saveregs(), (AP) = (char *)&__builtin_va_alist)
-
- #define __va_rounded_size(TYPE) \
- (((sizeof (TYPE) + sizeof (int) - 1) / sizeof (int)) * sizeof (int))
-
- #define va_arg(AP, TYPE) \
- ((AP) += __va_rounded_size (TYPE), \
- *((TYPE *) ((AP) - __va_rounded_size (TYPE))))
-
-
- /* #define va_arg(list, type) ((type *)(list += sizeof(type)))[-1] */
-
- #define va_end(list)
-
- #endif /* _VARARGS */
-