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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: signal.h,v 1.8 2006/01/09 18:18:37 millert Exp $	*/

/*
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Ralph Campbell.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 *	@(#)signal.h	8.1 (Berkeley) 6/10/93
 */

#ifndef _MIPS_SIGNAL_H_
#define _MIPS_SIGNAL_H_

#include <sys/cdefs.h>

#if !defined(__LANGUAGE_ASSEMBLY)
#include <sys/types.h>

/*
 * Machine-dependent signal definitions
 */
typedef int sig_atomic_t;

#if __BSD_VISIBLE || __XPG_VISIBLE >= 420
/*
 * Information pushed on stack when a signal is delivered.
 * This is used by the kernel to restore state following
 * execution of the signal handler.  It is also made available
 * to the handler to allow it to restore state properly if
 * a non-standard exit is performed.
 */
struct	sigcontext {
	long	sc_onstack;	/* sigstack state to restore */
	long	 sc_mask;	/* signal mask to restore */
	__register_t sc_pc;	/* pc at time of signal */
	__register_t sc_regs[32]; /* processor regs 0 to 31 */
	__register_t mullo;	/* mullo and mulhi registers... */
	__register_t mulhi;	/* mullo and mulhi registers... */
	f_register_t sc_fpregs[33]; /* fp regs 0 to 31 and csr */
	long	sc_fpused;	/* fp has been used */
	long	sc_fpc_eir;	/* floating point exception instruction reg */
	long	xxx[8];		/* XXX reserved */
};
#endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */

#else /* __LANGUAGE_ASSEMBLY */
#define SC_ONSTACK	(0 * REGSZ)
#define	SC_MASK		(1 * REGSZ)
#define	SC_PC		(2 * REGSZ)
#define	SC_REGS		(3 * REGSZ)
#define	SC_MULLO	(35 * REGSZ)
#define	SC_MULHI	(36 * REGSZ)
#define	SC_FPREGS	(37 * REGSZ)
#define	SC_FPUSED	(70 * REGSZ)
#define	SC_FPC_EIR	(71 * REGSZ)
#endif /* __LANGUAGE_ASSEMBLY */

#endif	/* !_MIPS_SIGNAL_H_ */