/*	$NetBSD: sunos_mod.c,v 1.7 2019/12/12 02:15:42 pgoyette Exp $	*/

/*-
 * Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software developed for The NetBSD Foundation
 * by Andrew Doran.
 *
 * 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sunos_mod.c,v 1.7 2019/12/12 02:15:42 pgoyette Exp $");

#include <sys/param.h>
#include <sys/module.h>
#include <sys/exec.h>
#include <sys/exec_aout.h>
#include <sys/signalvar.h>
#include <sys/compat_stub.h>

#include <machine/sunos_machdep.h>

#include <compat/sunos/sunos_exec.h>

MODULE(MODULE_CLASS_EXEC, compat_sunos, "compat_09,compat_util,exec_aout");

static struct execsw sunos_execsw = {
	.es_hdrsz = SUNOS_AOUT_HDR_SIZE,
	.es_makecmds = exec_sunos_aout_makecmds,
	.u = {
		.elf_probe_func = NULL,
	},
	.es_emul = &emul_sunos,
	.es_prio = EXECSW_PRIO_ANY,
	.es_arglen = 0,
	.es_copyargs = copyargs,
	.es_setregs = NULL,
	.es_coredump = coredump_netbsd,
	.es_setup_stack = exec_setup_stack,
};

static int
get_sunos_emul(const struct emul **e)
{

	*e = &emul_sunos;
	return 0;
}

static int
compat_sunos_modcmd(modcmd_t cmd, void *arg)
{

	switch (cmd) {
	case MODULE_CMD_INIT:
		MODULE_HOOK_SET(get_emul_sunos_hook, get_sunos_emul);
		return exec_add(&sunos_execsw, 1);

	case MODULE_CMD_FINI:
		MODULE_HOOK_UNSET(get_emul_sunos_hook);
		return exec_remove(&sunos_execsw, 1);

	default:
		return ENOTTY;
	}
}