Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1/*
2 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; either version 2
7 * of the License, or (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, see <http://www.gnu.org/licenses/>.
16 */
17
18#ifndef _OBJTOOL_ELF_H
19#define _OBJTOOL_ELF_H
20
21#include <stdio.h>
22#include <gelf.h>
23#include <linux/list.h>
24#include <linux/hashtable.h>
25
26#ifdef LIBELF_USE_DEPRECATED
27# define elf_getshdrnum elf_getshnum
28# define elf_getshdrstrndx elf_getshstrndx
29#endif
30
31struct section {
32 struct list_head list;
33 GElf_Shdr sh;
34 struct list_head symbol_list;
35 DECLARE_HASHTABLE(symbol_hash, 8);
36 struct list_head rela_list;
37 DECLARE_HASHTABLE(rela_hash, 16);
38 struct section *base, *rela;
39 struct symbol *sym;
40 Elf_Data *data;
41 char *name;
42 int idx;
43 unsigned int len;
44};
45
46struct symbol {
47 struct list_head list;
48 struct hlist_node hash;
49 GElf_Sym sym;
50 struct section *sec;
51 char *name;
52 unsigned int idx;
53 unsigned char bind, type;
54 unsigned long offset;
55 unsigned int len;
56};
57
58struct rela {
59 struct list_head list;
60 struct hlist_node hash;
61 GElf_Rela rela;
62 struct symbol *sym;
63 unsigned int type;
64 unsigned long offset;
65 int addend;
66};
67
68struct elf {
69 Elf *elf;
70 GElf_Ehdr ehdr;
71 int fd;
72 char *name;
73 struct list_head sections;
74 DECLARE_HASHTABLE(rela_hash, 16);
75};
76
77
78struct elf *elf_open(const char *name);
79struct section *find_section_by_name(struct elf *elf, const char *name);
80struct symbol *find_symbol_by_offset(struct section *sec, unsigned long offset);
81struct symbol *find_symbol_containing(struct section *sec, unsigned long offset);
82struct rela *find_rela_by_dest(struct section *sec, unsigned long offset);
83struct rela *find_rela_by_dest_range(struct section *sec, unsigned long offset,
84 unsigned int len);
85struct symbol *find_containing_func(struct section *sec, unsigned long offset);
86void elf_close(struct elf *elf);
87
88#define for_each_sec(file, sec) \
89 list_for_each_entry(sec, &file->elf->sections, list)
90
91#endif /* _OBJTOOL_ELF_H */