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Import of OpenBSD 4.2 release kernel tree with initial code to support 
Jornada 720/728, StrongARM 1110-based handheld PC.
At this point kernel roots on NFS and boots into vfs_mountroot() and traps.
What is supported:
- glass console, Jornada framebuffer (jfb) works in 16bpp direct color mode
(needs some palette tweaks for non black/white/blue colors, i think)
- saic, SA11x0 interrupt controller (needs cleanup)
- sacom, SA11x0 UART (supported only as boot console for now)
- SA11x0 GPIO controller fully supported (but can't handle multiple interrupt
handlers on one gpio pin)
- sassp, SSP port on SA11x0 that attaches spibus
- Jornada microcontroller (jmcu) to control kbd, battery, etc throught
the SPI bus (wskbd attaches on jmcu, but not tested)
- tod functions seem work
- initial code for SA-1111 (chip companion) : this is TODO

Next important steps, i think:
- gpio and intc on sa1111
- pcmcia support for sa11x0 (and sa1111 help logic)
- REAL root on nfs when we have PCMCIA support (we may use any of supported pccard NICs)
- root on wd0! (using already supported PCMCIA-ATA)

/*	$OpenBSD: varargs.h,v 1.2 2004/01/03 14:55:34 espie Exp $ */
/*
 * Copyright (c) 2003, 2004  Marc espie <espie@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _VARARGS_H_
#define _VARARGS_H_

#if defined(__GNUC__) && __GNUC__ >= 3
/* These macros implement traditional (non-ANSI) varargs
   for GNU C.  */

#define va_alist  __builtin_va_alist

#define	__va_ellipsis	...

/* ??? We don't process attributes correctly in K&R argument context.  */
typedef int __builtin_va_alist_t __attribute__((__mode__(__word__)));

/* ??? It would be nice to get rid of the ellipsis here.  It causes
   current_function_varargs to be set in cc1.  */
#define va_dcl		__builtin_va_alist_t __builtin_va_alist; ...

/* Define __gnuc_va_list, just as in stdarg.h.  */

#ifndef __GNUC_VA_LIST
#define __GNUC_VA_LIST
typedef __builtin_va_list __gnuc_va_list;
#endif

#define va_start(v)	__builtin_varargs_start((v))
#define va_end		__builtin_va_end
#define va_arg		__builtin_va_arg
#define __va_copy(d,s)	__builtin_va_copy((d),(s))

/* Define va_list from __gnuc_va_list.  */

typedef __gnuc_va_list va_list;

#else
#include <machine/varargs.h>
#endif

#endif /* _VARARGS_H_ */