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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 1.3 2006/01/08 14:20:17 millert Exp $	*/

/* 
 * Copyright (c) 1994, The University of Utah and
 * the Computer Systems Laboratory at the University of Utah (CSL).
 * All rights reserved.
 *
 * Permission to use, copy, modify and distribute this software is hereby
 * granted provided that (1) source code retains these copyright, permission,
 * and disclaimer notices, and (2) redistributions including binaries
 * reproduce the notices in supporting documentation, and (3) all advertising
 * materials mentioning features or use of this software display the following
 * acknowledgement: ``This product includes software developed by the
 * Computer Systems Laboratory at the University of Utah.''
 *
 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
 * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * CSL requests users of this software to return to csl-dist@cs.utah.edu any
 * improvements that they make and grant CSL redistribution rights.
 *
 * 	Utah $Hdr: signal.h 1.3 94/12/16$
 */

#ifndef	_HPPA64_SIGNAL_H_
#define	_HPPA64_SIGNAL_H_

#include <sys/cdefs.h>

/*
 * Machine-dependent signal definitions
 */

typedef int sig_atomic_t;

#if __BSD_VISIBLE
#include <machine/trap.h>
#endif

#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 {
	unsigned long	sc_onstack;	/* sigstack state to restore */
	unsigned long	sc_mask;	/* signal mask to restore */
	unsigned long	sc_ps;		/* psl to restore */
	unsigned long	sc_fp;		/* fp to restore */
	unsigned long	sc_pcoqh;	/* pc offset queue (head) to restore */
	unsigned long	sc_pcoqt;	/* pc offset queue (tail) to restore */
	unsigned long	sc_resv[2];
	unsigned long	sc_regs[32];
	unsigned long	sc_fpregs[64];
};
#endif /* __BSD_VISIBLE || __XPG_VISIBLE >= 420 */
#endif  /* !_HPPA64_SIGNAL_H_ */