1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5// Target-specific ELF type traits.
6
7#ifndef TOOLS_RELOCATION_PACKER_SRC_ELF_TRAITS_H_
8#define TOOLS_RELOCATION_PACKER_SRC_ELF_TRAITS_H_
9
10#include "elf.h"
11#include "libelf.h"
12
13#if !defined(DT_MIPS_RLD_MAP2)
14#define DT_MIPS_RLD_MAP2 0x70000035
15#endif
16
17// ELF is a traits structure used to provide convenient aliases for
18// 32/64 bit Elf types and functions, depending on the target file.
19
20struct ELF32_traits {
21  typedef Elf32_Addr Addr;
22  typedef Elf32_Dyn Dyn;
23  typedef Elf32_Ehdr Ehdr;
24  typedef Elf32_Off Off;
25  typedef Elf32_Phdr Phdr;
26  typedef Elf32_Rel Rel;
27  typedef Elf32_Rela Rela;
28  typedef Elf32_Shdr Shdr;
29  typedef Elf32_Sword Sword;
30  typedef Elf32_Sxword Sxword;
31  typedef Elf32_Sym Sym;
32  typedef Elf32_Word Word;
33  typedef Elf32_Xword Xword;
34  typedef Elf32_Half Half;
35
36  static inline Ehdr* getehdr(Elf* elf) { return elf32_getehdr(elf); }
37  static inline Phdr* getphdr(Elf* elf) { return elf32_getphdr(elf); }
38  static inline Shdr* getshdr(Elf_Scn* scn) { return elf32_getshdr(scn); }
39  static inline Word elf_r_type(Word info) { return ELF32_R_TYPE(info); }
40  static inline int elf_st_type(uint8_t info) { return ELF32_ST_TYPE(info); }
41  static inline Word elf_r_sym(Word info) { return ELF32_R_SYM(info); }
42};
43
44struct ELF64_traits {
45  typedef Elf64_Addr Addr;
46  typedef Elf64_Dyn Dyn;
47  typedef Elf64_Ehdr Ehdr;
48  typedef Elf64_Off Off;
49  typedef Elf64_Phdr Phdr;
50  typedef Elf64_Rel Rel;
51  typedef Elf64_Rela Rela;
52  typedef Elf64_Shdr Shdr;
53  typedef Elf64_Sword Sword;
54  typedef Elf64_Sxword Sxword;
55  typedef Elf64_Sym Sym;
56  typedef Elf64_Word Word;
57  typedef Elf64_Xword Xword;
58  typedef Elf64_Half Half;
59
60  static inline Ehdr* getehdr(Elf* elf) { return elf64_getehdr(elf); }
61  static inline Phdr* getphdr(Elf* elf) { return elf64_getphdr(elf); }
62  static inline Shdr* getshdr(Elf_Scn* scn) { return elf64_getshdr(scn); }
63  static inline Xword elf_r_type(Xword info) { return ELF64_R_TYPE(info); }
64  static inline int elf_st_type(uint8_t info) { return ELF64_ST_TYPE(info); }
65  static inline Word elf_r_sym(Xword info) { return ELF64_R_SYM(info); }
66};
67
68#endif  // TOOLS_RELOCATION_PACKER_SRC_ELF_TRAITS_H_
69