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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_machdep.c,v 1.3 2005/01/03 16:49:56 miod Exp $	*/
/*	$NetBSD: db_machdep.c,v 1.8 2003/07/15 00:24:41 lukem Exp $	*/

/* 
 * Copyright (c) 1996 Mark Brinicombe
 *
 * Mach Operating System
 * Copyright (c) 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 the
 * rights to redistribute these changes.
 */

#include <sys/param.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/systm.h>

#include <arm/db_machdep.h>

#include <ddb/db_access.h>
#include <ddb/db_sym.h>
#include <ddb/db_output.h>

void
db_show_frame_cmd(addr, have_addr, count, modif)
	db_expr_t       addr;
	int             have_addr;
	db_expr_t       count;
	char            *modif;
{
	struct trapframe *frame;

	if (!have_addr) {
		db_printf("frame address must be specified\n");
		return;
	}

	frame = (struct trapframe *)addr;

	db_printf("frame address = %08x  ", (u_int)frame);
	db_printf("spsr=%08x\n", frame->tf_spsr);
	db_printf("r0 =%08x r1 =%08x r2 =%08x r3 =%08x\n",
	    frame->tf_r0, frame->tf_r1, frame->tf_r2, frame->tf_r3);
	db_printf("r4 =%08x r5 =%08x r6 =%08x r7 =%08x\n",
	    frame->tf_r4, frame->tf_r5, frame->tf_r6, frame->tf_r7);
	db_printf("r8 =%08x r9 =%08x r10=%08x r11=%08x\n",
	    frame->tf_r8, frame->tf_r9, frame->tf_r10, frame->tf_r11);
	db_printf("r12=%08x r13=%08x r14=%08x r15=%08x\n",
	    frame->tf_r12, frame->tf_usr_sp, frame->tf_usr_lr, frame->tf_pc);
	db_printf("slr=%08x\n", frame->tf_svc_lr);
}