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 
20 struct 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 
getehdrELF32_traits36   static inline Ehdr* getehdr(Elf* elf) { return elf32_getehdr(elf); }
getphdrELF32_traits37   static inline Phdr* getphdr(Elf* elf) { return elf32_getphdr(elf); }
getshdrELF32_traits38   static inline Shdr* getshdr(Elf_Scn* scn) { return elf32_getshdr(scn); }
elf_r_typeELF32_traits39   static inline Word elf_r_type(Word info) { return ELF32_R_TYPE(info); }
elf_st_typeELF32_traits40   static inline int elf_st_type(uint8_t info) { return ELF32_ST_TYPE(info); }
elf_r_symELF32_traits41   static inline Word elf_r_sym(Word info) { return ELF32_R_SYM(info); }
42 };
43 
44 struct 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 
getehdrELF64_traits60   static inline Ehdr* getehdr(Elf* elf) { return elf64_getehdr(elf); }
getphdrELF64_traits61   static inline Phdr* getphdr(Elf* elf) { return elf64_getphdr(elf); }
getshdrELF64_traits62   static inline Shdr* getshdr(Elf_Scn* scn) { return elf64_getshdr(scn); }
elf_r_typeELF64_traits63   static inline Xword elf_r_type(Xword info) { return ELF64_R_TYPE(info); }
elf_st_typeELF64_traits64   static inline int elf_st_type(uint8_t info) { return ELF64_ST_TYPE(info); }
elf_r_symELF64_traits65   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