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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: db_variables.h,v 1.7 2006/07/06 19:05:58 miod Exp $	*/
/*	$NetBSD: db_variables.h,v 1.5 1996/02/05 01:57:21 christos Exp $	*/

/* 
 * Mach Operating System
 * Copyright (c) 1993,1992,1991,1990 Carnegie Mellon University
 * All Rights Reserved.
 * 
 * Permission to use, copy, modify and distribute this software and its
 * documentation is hereby granted, provided that both the copyright
 * notice and this permission notice appear in all copies of the
 * software, derivative works or modified versions, and any portions
 * thereof, and that both notices appear in supporting documentation.
 * 
 * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
 * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
 * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 * 
 * Carnegie Mellon requests users of this software to return to
 * 
 *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
 *  School of Computer Science
 *  Carnegie Mellon University
 *  Pittsburgh PA 15213-3890
 * 
 * any improvements or extensions that they make and grant Carnegie Mellon
 * the rights to redistribute these changes.
 *
 * 	Author: David B. Golub, Carnegie Mellon University
 *	Date:	7/90
 */

#ifndef	_DB_VARIABLES_H_
#define	_DB_VARIABLES_H_

/*
 * Debugger variables.
 */
struct db_variable {
	char	*name;		/* Name of variable */
	long	*valuep;	/* value of variable */
				/* function to call when reading/writing */
	int	(*fcn)(struct db_variable *, db_expr_t *, int);
#define DB_VAR_GET	0
#define DB_VAR_SET	1
};
#define	FCN_NULL ((int (*)(struct db_variable *, db_expr_t *, int))0)

extern struct db_variable	db_vars[];	/* debugger variables */
extern struct db_variable	*db_evars;
extern struct db_variable	db_regs[];	/* machine registers */
extern struct db_variable	*db_eregs;

int	db_find_variable(struct db_variable **);
int	db_get_variable(db_expr_t *);
int	db_set_variable(db_expr_t);
void	db_read_variable(struct db_variable *, db_expr_t *);
void	db_write_variable(struct db_variable *, db_expr_t *);
void	db_set_cmd(db_expr_t, int, db_expr_t, char *);
int	db_var_rw_int(struct db_variable *, db_expr_t *, int);

#endif	/* _DB_VARIABLES_H_ */