[163] | 1 | /* |
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| 2 | This file is part of Libelfpp. |
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| 3 | |
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| 4 | Libelfpp is free software: you can redistribute it and/or modify |
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| 5 | it under the terms of the GNU Lesser General Public License as |
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| 6 | published by the Free Software Foundation, either version 3 of the |
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| 7 | License, or (at your option) any later version. |
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| 8 | |
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| 9 | Libelfpp is distributed in the hope that it will be useful, but |
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| 10 | WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with Libelfpp. If not, see |
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| 16 | <http://www.gnu.org/licenses/>. |
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| 17 | |
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| 18 | Copyright (c) Alexandre Becoulet <alexandre.becoulet@free.fr> |
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| 19 | */ |
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| 20 | |
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| 21 | #ifndef ELFPP_ACCESS_HH_ |
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| 22 | #define ELFPP_ACCESS_HH_ |
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| 23 | |
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| 24 | #include <stdio.h> |
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| 25 | #include "elfpp_bits.hh" |
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| 26 | |
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| 27 | namespace elfpp |
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| 28 | { |
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| 29 | |
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| 30 | class object; |
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| 31 | class section; |
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| 32 | class reloc; |
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| 33 | |
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| 34 | /** @internal */ |
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| 35 | class elf_access |
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| 36 | { |
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| 37 | public: |
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| 38 | virtual ~elf_access() {} |
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| 39 | virtual void read(object &obj, FILE *file) = 0; |
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| 40 | virtual void write(object &obj, FILE *file) = 0; |
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| 41 | virtual void load_symtab(object &obj) = 0; |
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| 42 | virtual void load_reltab(object &obj) = 0; |
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| 43 | virtual void save_symtab(object &obj) = 0; |
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| 44 | }; |
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| 45 | |
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| 46 | /** @internal */ |
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| 47 | template <class bits_t, int width> |
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| 48 | class elfn_access : public elf_access |
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| 49 | { |
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| 50 | typedef typename bits_t::elf_hdr_t elf_hdr_t; |
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| 51 | typedef typename bits_t::elf_shdr_t elf_shdr_t; |
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| 52 | typedef typename bits_t::elf_phdr_t elf_phdr_t; |
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| 53 | typedef typename bits_t::elf_sym_t elf_sym_t; |
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| 54 | typedef typename bits_t::elf_rel_t elf_rel_t; |
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| 55 | typedef typename bits_t::elf_rela_t elf_rela_t; |
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| 56 | |
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| 57 | void load_symtab(object &obj); |
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| 58 | void load_reltab(object &obj); |
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| 59 | void save_symtab(object &obj); |
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| 60 | void create_segments(object &obj); |
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| 61 | |
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| 62 | void read(object &obj, FILE *file); |
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| 63 | void write(object &obj, FILE *file); |
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| 64 | |
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| 65 | inline uint16_t swap(uint16_t x); |
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| 66 | inline uint32_t swap(uint32_t x); |
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| 67 | inline uint64_t swap(uint64_t x); |
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| 68 | |
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| 69 | inline int16_t swap(int16_t x); |
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| 70 | inline int32_t swap(int32_t x); |
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| 71 | inline int64_t swap(int64_t x); |
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| 72 | |
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| 73 | inline unsigned int rel_sym(uint64_t info); |
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| 74 | inline enum reloc_e rel_type(uint64_t info); |
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| 75 | inline uint64_t rel_info(unsigned int sym, enum reloc_e type); |
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| 76 | |
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| 77 | void load_addend(const object &obj, reloc &r, const elf_rel_t *reltab, size_t count, int index, uint8_t *data); |
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| 78 | void rel_write(const object &obj, enum reloc_e type, void *data, int64_t value); |
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| 79 | |
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| 80 | template <typename X, typename Y> |
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| 81 | inline void swap(X *a, Y x); |
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| 82 | |
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| 83 | ei_data_e byteorder_; |
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| 84 | }; |
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| 85 | |
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| 86 | struct elf32_bits_s |
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| 87 | { |
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| 88 | typedef Elf32_Ehdr elf_hdr_t; |
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| 89 | typedef Elf32_Shdr elf_shdr_t; |
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| 90 | typedef Elf32_Phdr elf_phdr_t; |
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| 91 | typedef Elf32_Sym elf_sym_t; |
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| 92 | typedef Elf32_Rel elf_rel_t; |
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| 93 | typedef Elf32_Rela elf_rela_t; |
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| 94 | }; |
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| 95 | |
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| 96 | struct elf64_bits_s |
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| 97 | { |
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| 98 | typedef Elf64_Ehdr elf_hdr_t; |
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| 99 | typedef Elf64_Shdr elf_shdr_t; |
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| 100 | typedef Elf64_Phdr elf_phdr_t; |
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| 101 | typedef Elf64_Sym elf_sym_t; |
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| 102 | typedef Elf64_Rel elf_rel_t; |
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| 103 | typedef Elf64_Rela elf_rela_t; |
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| 104 | }; |
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| 105 | |
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| 106 | typedef elfn_access<elf32_bits_s, 32> elf32_access; |
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| 107 | typedef elfn_access<elf64_bits_s, 64> elf64_access; |
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| 108 | |
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| 109 | } |
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| 110 | |
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| 111 | #endif |
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| 112 | |
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