[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_SECTION_HH_ |
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| 22 | #define ELFPP_SECTION_HH_ |
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| 23 | |
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| 24 | #include <string> |
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| 25 | #include <map> |
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| 26 | #include <stdint.h> |
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| 27 | |
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| 28 | #include "elfpp.hh" |
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| 29 | #include "elfpp_bits.hh" |
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| 30 | |
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| 31 | namespace elfpp |
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| 32 | { |
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| 33 | |
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| 34 | class object; |
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| 35 | class section; |
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| 36 | class symbol; |
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| 37 | class reloc; |
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| 38 | |
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| 39 | std::ostream & operator<<(std::ostream &o, const section &v); |
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| 40 | |
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| 41 | /** |
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| 42 | @short ELF section class |
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| 43 | @header elfpp/section |
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| 44 | */ |
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| 45 | class section : public section_table_t::item_type |
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| 46 | { |
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| 47 | template <typename, int> friend class elfn_access; |
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| 48 | friend std::ostream & operator<<(std::ostream &o, const section &v); |
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| 49 | friend class symbol; |
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| 50 | friend class object; |
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| 51 | |
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| 52 | public: |
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| 53 | /** @this creates a new section associated with given object */ |
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| 54 | section(object &obj, sh_type_e type); |
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| 55 | |
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| 56 | ~section(); |
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| 57 | |
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| 58 | /** @this sets section name */ |
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| 59 | inline void set_name(const std::string &name); |
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| 60 | /** @this gets section name */ |
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| 61 | inline const std::string & get_name() const; |
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| 62 | |
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| 63 | /** @this gets section type */ |
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| 64 | inline sh_type_e get_type() const; |
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| 65 | |
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| 66 | /** @this sets section flags */ |
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| 67 | inline void set_flags(sh_flags_e flags); |
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| 68 | /** @this gets section flags */ |
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| 69 | inline sh_flags_e get_flags() const; |
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| 70 | |
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| 71 | /** @this sets section address */ |
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| 72 | inline void set_vaddr(uint64_t vaddr); |
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| 73 | /** @this gets section address */ |
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| 74 | inline uint64_t get_vaddr() const; |
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| 75 | |
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| 76 | /** @this sets section size, reallocate section content buffer */ |
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| 77 | void set_size(size_t size); |
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| 78 | /** @this gets section size */ |
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| 79 | inline size_t get_size() const; |
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| 80 | |
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| 81 | /** @this sets section link to an other section */ |
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| 82 | inline void set_link(section *s); |
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| 83 | /** @this gets section link */ |
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| 84 | inline section * get_link() const; |
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| 85 | /** @this gets section with a link to this section, may be unreliable if |
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| 86 | multiple links exits */ |
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| 87 | inline section * get_back_link() const; |
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| 88 | |
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| 89 | /** @this sets section info as link to section */ |
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| 90 | inline void set_info(section *s); |
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| 91 | /** @this gets section info as link to section */ |
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| 92 | inline section * get_info() const; |
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| 93 | /** @this gets section info as back link to section */ |
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| 94 | inline section * get_back_info() const; |
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| 95 | |
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| 96 | /** @this sets section info as last local symbol index */ |
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| 97 | inline void set_info_last(unsigned int last); |
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| 98 | /** @this gets section info as last local symbol index */ |
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| 99 | inline unsigned int get_info_last(); |
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| 100 | |
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| 101 | /** @this sets section alignement */ |
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| 102 | inline void set_align(uint32_t align); |
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| 103 | /** @this gets section alignement */ |
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| 104 | inline uint32_t get_align() const; |
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| 105 | |
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| 106 | /** @this sets section entry size */ |
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| 107 | inline void set_entsize(uint32_t entsize); |
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| 108 | /** @this sets section entry size */ |
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| 109 | inline uint32_t get_entsize() const; |
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| 110 | |
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| 111 | /** @this sets pointer to section content buffer */ |
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[173] | 112 | void set_content(void* a); |
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[163] | 113 | /** @this gets pointer to section content buffer */ |
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| 114 | inline uint8_t *get_content() const; |
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| 115 | |
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| 116 | /** @this gets pointer to container segment if any */ |
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| 117 | segment *get_segment() const; |
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| 118 | |
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| 119 | /** @this gets associated object */ |
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| 120 | inline object * get_object() const; |
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| 121 | |
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| 122 | /** @this gets load address from segment info */ |
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| 123 | uint64_t get_load_address() const; |
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| 124 | |
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| 125 | inline off_t get_file_offset() const; |
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| 126 | |
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| 127 | /** @this adds symbol to section */ |
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| 128 | void add_symbol(symbol &sym); |
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| 129 | /** @this removes symbol from section */ |
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| 130 | void remove_symbol(symbol &sym); |
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| 131 | /** @this gets symbol by name */ |
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| 132 | inline symbol & get_symbol(const std::string &name); |
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| 133 | /** @this gets symbol containing given offset */ |
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| 134 | symbol & get_symbol(uint64_t offset); |
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| 135 | /** @this gets symbol table */ |
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| 136 | inline const sym_tab_map_t & get_symbol_table() const; |
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| 137 | |
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| 138 | private: |
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| 139 | inline void set_file_offset(off_t a); |
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| 140 | |
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| 141 | /** start of flags present in elf section entry */ |
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| 142 | std::string name_; |
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| 143 | sh_type_e type_; |
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| 144 | sh_flags_e flags_; |
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| 145 | uint64_t vaddr_; |
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| 146 | off_t offset_; |
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| 147 | size_t size_; |
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| 148 | section *link_; |
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| 149 | union { |
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| 150 | section *info_; |
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| 151 | unsigned int info_last_; |
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| 152 | }; |
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| 153 | uint32_t align_; |
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| 154 | uint32_t entsize_; |
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| 155 | /** end of flags present in elf section entry */ |
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| 156 | |
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| 157 | // index of section |
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| 158 | unsigned int index_; |
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| 159 | |
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| 160 | section *back_info_; // link to associated relocation table |
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| 161 | section *back_link_; // link to associated relocation table |
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| 162 | object *object_; |
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| 163 | uint8_t *content_; |
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| 164 | sym_tab_map_t sym_tab_; |
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| 165 | }; |
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| 166 | |
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| 167 | } |
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| 168 | |
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| 169 | #endif |
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| 170 | |
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