1/*	$NetBSD: kobj_impl.h,v 1.5 2016/07/20 13:36:19 maxv Exp $	*/
2
3/*-
4 * Copyright (c) 2008, 2009 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/*-
33 * Copyright (c) 1998-2000 Doug Rabson
34 * Copyright (c) 2004 Peter Wemm
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 *    notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 *    notice, this list of conditions and the following disclaimer in the
44 *    documentation and/or other materials provided with the distribution.
45 *
46 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
47 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
48 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
49 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
50 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
51 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
52 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
53 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
54 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
55 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
56 * SUCH DAMAGE.
57 */
58
59/*
60 * Data structures private to kobj, shared only with kernel grovellers.
61 */
62
63#ifndef _SYS_KOBJ_IMPL_H_
64#define	_SYS_KOBJ_IMPL_H_
65
66#define	ELFSIZE		ARCH_ELFSIZE
67
68#include <sys/systm.h>
69#include <sys/kobj.h>
70#include <sys/exec.h>
71#include <sys/exec_elf.h>
72#include <sys/module.h>
73
74typedef struct {
75	void		*addr;
76	Elf_Off		size;
77	int		flags;
78	int		sec;		/* Original section */
79	const char	*name;
80} progent_t;
81
82typedef struct {
83	Elf_Rel		*rel;
84	int 		nrel;
85	int 		sec;
86	size_t		size;
87} relent_t;
88
89typedef struct {
90	Elf_Rela	*rela;
91	int		nrela;
92	int		sec;
93	size_t		size;
94} relaent_t;
95
96typedef enum kobjtype {
97	KT_UNSET,
98	KT_VNODE,
99	KT_MEMORY
100} kobjtype_t;
101
102typedef int (*kobj_read_fn)(kobj_t, void **, size_t, off_t, bool);
103typedef void (*kobj_close_fn)(kobj_t);
104
105struct kobj {
106	char		ko_name[MAXMODNAME];
107	kobjtype_t	ko_type;
108	void		*ko_source;
109	ssize_t		ko_memsize;
110	vaddr_t		ko_text_address;	/* Address of text segment */
111	vaddr_t		ko_data_address;	/* Address of data segment */
112	vaddr_t		ko_rodata_address;	/* Address of rodata segment */
113	Elf_Shdr	*ko_shdr;
114	progent_t	*ko_progtab;
115	relaent_t	*ko_relatab;
116	relent_t	*ko_reltab;
117	Elf_Sym		*ko_symtab;	/* Symbol table */
118	char		*ko_strtab;	/* String table */
119	char		*ko_shstrtab;	/* Section name string table */
120	size_t		ko_text_size;	/* Size of text segment */
121	size_t		ko_data_size;	/* Size of data/bss segment */
122	size_t		ko_rodata_size;	/* Size of rodata segment */
123	size_t		ko_symcnt;	/* Number of symbols */
124	size_t		ko_strtabsz;	/* Number of bytes in string table */
125	size_t		ko_shstrtabsz;	/* Number of bytes in scn str table */
126	size_t		ko_shdrsz;
127	int		ko_nrel;
128	int		ko_nrela;
129	int		ko_nprogtab;
130	bool		ko_ksyms;
131	bool		ko_loaded;
132	kobj_read_fn	ko_read;
133	kobj_close_fn	ko_close;
134};
135
136#ifdef _KERNEL
137int	kobj_load(kobj_t);
138void	kobj_setname(kobj_t, const char *);
139#endif
140
141#endif	/* _SYS_KOBJ_IMPL_H_ */
142