xref: /openbsd/sys/arch/hppa/stand/boot/exec.c (revision 2340cfa5)

/*	$OpenBSD: exec.c,v 1.6 2019/04/10 04:17:34 deraadt Exp $	*/

/*
 * Copyright (c) 2002-2004 Michael Shalayeff
 * All rights reserved.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR OR HIS RELATIVES 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 MIND, 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.
 */

#include <sys/param.h>
#include <machine/cpu.h>
#include <machine/pdc.h>
#include "libsa.h"
#include <lib/libsa/loadfile.h>
#include <stand/boot/bootarg.h>
#include "dev_hppa.h"

typedef void (*startfuncp)(int, int, int, int, int, int, caddr_t)
    __attribute__ ((noreturn));

void
run_loadfile(uint64_t *marks, int howto)
{
	fcacheall();

	__asm("mtctl %r0, %cr17");
	__asm("mtctl %r0, %cr17");
	/* stack and the gung is ok at this point, so, no need for asm setup */
	(*(startfuncp)((u_long)marks[MARK_ENTRY]))((int)pdc, howto, bootdev,
	    (u_long)marks[MARK_END], BOOTARG_APIVER, BOOTARG_LEN, (caddr_t)BOOTARG_OFF);

	/* not reached */
}