1/* $NetBSD: netbsd32_mod.c,v 1.13 2015/12/03 02:51:01 pgoyette Exp $ */
2
3/*-
4 * Copyright (c) 2008 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software developed for The NetBSD Foundation
8 * by Andrew Doran.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__KERNEL_RCSID(0, "$NetBSD: netbsd32_mod.c,v 1.13 2015/12/03 02:51:01 pgoyette Exp $");
34
35#ifdef _KERNEL_OPT
36#include "opt_execfmt.h"
37#endif
38
39#ifndef ELFSIZE
40#define ELFSIZE ARCH_ELFSIZE
41#endif
42
43#include <sys/param.h>
44#include <sys/module.h>
45#include <sys/exec.h>
46#include <sys/exec_elf.h>
47
48#include <compat/netbsd32/netbsd32_sysctl.h>
49#include <compat/netbsd32/netbsd32_exec.h>
50
51# define DEPS1 "compat,sysv_ipc,ksem"
52
53#if defined(EXEC_ELF32)
54# define DEPS2 ",exec_elf32"
55#else
56# define DEPS2 ""
57#endif
58
59#define ELF32_AUXSIZE (howmany(ELF_AUX_ENTRIES * sizeof(Aux32Info), \
60 sizeof(Elf32_Addr)) + MAXPATHLEN + ALIGN(1))
61
62MODULE(MODULE_CLASS_EXEC, compat_netbsd32, DEPS1 DEPS2);
63
64static struct execsw netbsd32_execsw[] = {
65#ifdef EXEC_AOUT
66 {
67 .es_hdrsz = sizeof(struct netbsd32_exec),
68 .es_makecmds = exec_netbsd32_makecmds,
69 .u = {
70 .elf_probe_func = NULL,
71 },
72 .es_emul = &emul_netbsd32,
73 .es_prio = EXECSW_PRIO_FIRST,
74 .es_arglen = 0,
75 .es_copyargs = netbsd32_copyargs,
76 .es_setregs = NULL,
77 .es_coredump = coredump_netbsd32,
78 .es_setup_stack = exec_setup_stack,
79 },
80#endif
81#ifdef EXEC_ELF32
82 {
83 .es_hdrsz = sizeof (Elf32_Ehdr),
84 .es_makecmds = exec_elf32_makecmds,
85 .u = {
86 .elf_probe_func = netbsd32_elf32_probe,
87 },
88 .es_emul = &emul_netbsd32,
89 .es_prio = EXECSW_PRIO_ANY,
90 .es_arglen = ELF32_AUXSIZE,
91 .es_copyargs = netbsd32_elf32_copyargs,
92 .es_setregs = NULL,
93 .es_coredump = coredump_elf32,
94 .es_setup_stack = exec_setup_stack, /* XXX XXX XXX */
95 },
96#endif
97};
98
99static int
100compat_netbsd32_modcmd(modcmd_t cmd, void *arg)
101{
102 int error;
103
104 switch (cmd) {
105 case MODULE_CMD_INIT:
106 netbsd32_sysctl_init();
107 error = exec_add(netbsd32_execsw,
108 __arraycount(netbsd32_execsw));
109 if (error != 0)
110 netbsd32_sysctl_fini();
111 return error;
112
113 case MODULE_CMD_FINI:
114 error = exec_remove(netbsd32_execsw,
115 __arraycount(netbsd32_execsw));
116 if (error == 0)
117 netbsd32_sysctl_fini();
118 return error;
119
120 default:
121 return ENOTTY;
122 }
123}
124