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 | |
74 | typedef struct { |
75 | void *addr; |
76 | Elf_Off size; |
77 | int flags; |
78 | int sec; /* Original section */ |
79 | const char *name; |
80 | } progent_t; |
81 | |
82 | typedef struct { |
83 | Elf_Rel *rel; |
84 | int nrel; |
85 | int sec; |
86 | size_t size; |
87 | } relent_t; |
88 | |
89 | typedef struct { |
90 | Elf_Rela *rela; |
91 | int nrela; |
92 | int sec; |
93 | size_t size; |
94 | } relaent_t; |
95 | |
96 | typedef enum kobjtype { |
97 | KT_UNSET, |
98 | KT_VNODE, |
99 | KT_MEMORY |
100 | } kobjtype_t; |
101 | |
102 | typedef int (*kobj_read_fn)(kobj_t, void **, size_t, off_t, bool); |
103 | typedef void (*kobj_close_fn)(kobj_t); |
104 | |
105 | struct 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 |
137 | int kobj_load(kobj_t); |
138 | void kobj_setname(kobj_t, const char *); |
139 | #endif |
140 | |
141 | #endif /* _SYS_KOBJ_IMPL_H_ */ |
142 | |