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442f04c3 JP |
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> | |
042ba73f | 24 | #include <linux/hashtable.h> |
442f04c3 | 25 | |
2e51f262 JB |
26 | #ifdef LIBELF_USE_DEPRECATED |
27 | # define elf_getshdrnum elf_getshnum | |
28 | # define elf_getshdrstrndx elf_getshstrndx | |
29 | #endif | |
30 | ||
442f04c3 JP |
31 | struct section { |
32 | struct list_head list; | |
33 | GElf_Shdr sh; | |
a196e171 | 34 | struct list_head symbol_list; |
042ba73f | 35 | DECLARE_HASHTABLE(symbol_hash, 8); |
a196e171 | 36 | struct list_head rela_list; |
042ba73f | 37 | DECLARE_HASHTABLE(rela_hash, 16); |
442f04c3 JP |
38 | struct section *base, *rela; |
39 | struct symbol *sym; | |
baa41469 | 40 | Elf_Data *data; |
442f04c3 JP |
41 | char *name; |
42 | int idx; | |
442f04c3 JP |
43 | unsigned int len; |
44 | }; | |
45 | ||
46 | struct symbol { | |
47 | struct list_head list; | |
042ba73f | 48 | struct hlist_node hash; |
442f04c3 JP |
49 | GElf_Sym sym; |
50 | struct section *sec; | |
51 | char *name; | |
042ba73f | 52 | unsigned int idx; |
442f04c3 JP |
53 | unsigned char bind, type; |
54 | unsigned long offset; | |
55 | unsigned int len; | |
56 | }; | |
57 | ||
58 | struct rela { | |
59 | struct list_head list; | |
042ba73f | 60 | struct hlist_node hash; |
442f04c3 JP |
61 | GElf_Rela rela; |
62 | struct symbol *sym; | |
63 | unsigned int type; | |
042ba73f | 64 | unsigned long offset; |
442f04c3 JP |
65 | int addend; |
66 | }; | |
67 | ||
68 | struct elf { | |
69 | Elf *elf; | |
70 | GElf_Ehdr ehdr; | |
71 | int fd; | |
72 | char *name; | |
73 | struct list_head sections; | |
042ba73f | 74 | DECLARE_HASHTABLE(rela_hash, 16); |
442f04c3 JP |
75 | }; |
76 | ||
77 | ||
78 | struct elf *elf_open(const char *name); | |
79 | struct section *find_section_by_name(struct elf *elf, const char *name); | |
80 | struct symbol *find_symbol_by_offset(struct section *sec, unsigned long offset); | |
5c51f4ae | 81 | struct symbol *find_symbol_containing(struct section *sec, unsigned long offset); |
442f04c3 JP |
82 | struct rela *find_rela_by_dest(struct section *sec, unsigned long offset); |
83 | struct rela *find_rela_by_dest_range(struct section *sec, unsigned long offset, | |
84 | unsigned int len); | |
85 | struct symbol *find_containing_func(struct section *sec, unsigned long offset); | |
86 | void elf_close(struct elf *elf); | |
87 | ||
baa41469 JP |
88 | #define for_each_sec(file, sec) \ |
89 | list_for_each_entry(sec, &file->elf->sections, list) | |
442f04c3 JP |
90 | |
91 | #endif /* _OBJTOOL_ELF_H */ |