xref: /src/sys/compat/netbsd32/netbsd32_compat_16.c

/*	$NetBSD: netbsd32_compat_16.c,v 1.4 2021/11/26 08:06:11 ryo Exp $	*/

/*-
 * Copyright (c) 2008 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Christos Zoulas.
 *
 * 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: netbsd32_compat_16.c,v 1.4 2021/11/26 08:06:11 ryo Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/module.h>
#include <sys/dirent.h>
#include <sys/exec.h>
#include <sys/lwp.h>
#include <sys/syscallargs.h>
#include <sys/syscallvar.h>

#include <compat/netbsd32/netbsd32.h>
#include <compat/netbsd32/netbsd32_syscall.h>
#include <compat/netbsd32/netbsd32_syscallargs.h>
#include <compat/netbsd32/netbsd32_conv.h>

struct uvm_object *emul_netbsd32_object;

MODULE(MODULE_CLASS_EXEC, compat_netbsd32_16, "compat_netbsd32_20,compat_16");

static int
compat_netbsd32_16_modcmd(modcmd_t cmd, void *arg)
{
	int error;

	switch (cmd) {
	case MODULE_CMD_INIT:
		rw_enter(&exec_lock, RW_WRITER);
		emul_netbsd32.e_sigcode = netbsd32_sigcode;
        	emul_netbsd32.e_esigcode = netbsd32_esigcode;
        	emul_netbsd32.e_sigobject = &emul_netbsd32_object;
		error = exec_sigcode_alloc(&emul_netbsd);
		if (error) {
			emul_netbsd32.e_sigcode = NULL;
			emul_netbsd32.e_esigcode = NULL;
			emul_netbsd32.e_sigobject = NULL;
		}
		rw_exit(&exec_lock);
		if (error)
			return error;
		netbsd32_machdep_md_16_init();
		return 0;

	case MODULE_CMD_FINI:
		rw_enter(&exec_lock, RW_WRITER);
		exec_sigcode_free(&emul_netbsd);
		emul_netbsd32.e_sigcode = NULL;
        	emul_netbsd32.e_esigcode = NULL;
        	emul_netbsd32.e_sigobject = NULL;
		rw_exit(&exec_lock);
		netbsd32_machdep_md_16_fini();
		return 0;

	default:
		return ENOTTY;
	}
}