/* * common/va-tcs.h * Common header for TCS <stdarg.h> and <varargs.h>. * The type used in va_arg must match the actual type after * default promotions, so e.g. va_arg(..., short) is not valid. */#ifndef	__VA_TCS_H__#define	__VA_TCS_H__#if	defined(__cplusplus)extern	"C"	{#endif	/* defined(__cplusplus) *//* Type. */#include <common/_va_list.h>typedef	_LIBC_VA_LIST_	va_list;/* Rounding macros. */#define _va_round_var(var)	((sizeof(var)  < 4) ? 4 - sizeof(var)  : 0)#define _va_roundup_var(var)	((sizeof(var)  < 4) ? 4		       : sizeof(var))#define _va_round(type)		((sizeof(type) < 4) ? 4 - sizeof(type) : 0)#define _va_roundup(type)	((sizeof(type) < 4) ? 4		       : sizeof(type))#define _va_align(type)		((sizeof(type) + 3) & 0xFFFFFFFC)#if	defined(__VARARGS_H__)	/* <varargs.h> */#define va_alist    _va_alist#define va_dcl int  _va_alist;#define va_start(ap) ap = ((va_list) (void *) &_va_alist)#elif	defined(__STDARG_H__)	/* <stdarg.h> */#define va_start(ap,lastarg) (ap = (va_list) (((char *) &lastarg) + _va_roundup_var(lastarg)))#else#error	Do not include <common/va-tcs.h> directly; include <stdarg.h> or <varargs.h> instead.#endif	/* defined(__VARARGS_H__) */#define va_arg(ap,type) ((ap = ((char *) ap) + _va_align(type)), *(type *) ((char *)ap - _va_align(type)))#define va_end(ap)	((void)0)#if	defined(__cplusplus)}#endif	/* defined(__cplusplus) */#endif	/* __VA_TCS_H__ *//* end of common/va-tcs.h */