[unix-history] / usr / src / sys / pmax / include / varargs.h

/*-
 * Copyright (c) 1992 The Regents of the University of California.
 * All rights reserved.
 *
 * %sccs.include.redist.c%
 *
 *	@(#)varargs.h	7.2 (Berkeley) %G%
 */

#ifndef _VARARGS_H_
#define	_VARARGS_H_

typedef char *va_list;

#define	va_dcl	int va_alist;

#define	va_start(ap) \
	ap = (char *)&va_alist

#ifdef KERNEL
#define	va_arg(ap, type) \
	((type *)(ap += sizeof(type)))[-1]
#else
#define	va_arg(ap, type) \
	((type *)(ap += sizeof(type) == sizeof(int) ? sizeof(type) : \
		sizeof(type) > sizeof(int) ? \
		(-(int)(ap) & (sizeof(type) - 1)) + sizeof(type) : \
		(abort(), 0)))[-1]
#endif

#define	va_end(ap)

#endif /* !_VARARGS_H_ */
Commit	Line	Data
1c648131 KB	1	/*-
	2	* Copyright (c) 1992 The Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* %sccs.include.redist.c%
	6	*
0090f59b	7	* @(#)varargs.h 7.2 (Berkeley) %G%
1c648131 KB	8	*/
	9
	10	#ifndef _VARARGS_H_
	11	#define _VARARGS_H_
	12
	13	typedef char *va_list;
	14
	15	#define va_dcl int va_alist;
	16
	17	#define va_start(ap) \
	18	ap = (char *)&va_alist
	19
	20	#ifdef KERNEL
	21	#define va_arg(ap, type) \
	22	((type *)(ap += sizeof(type)))[-1]
	23	#else
	24	#define va_arg(ap, type) \
	25	((type *)(ap += sizeof(type) == sizeof(int) ? sizeof(type) : \
	26	sizeof(type) > sizeof(int) ? \
0090f59b	27	(-(int)(ap) & (sizeof(type) - 1)) + sizeof(type) : \
1c648131 KB	28	(abort(), 0)))[-1]
	29	#endif
	30
	31	#define va_end(ap)
	32
	33	#endif /* !_VARARGS_H_ */