| 1 | // binary.h -- binary input files for gold -*- C++ -*- |
| 2 | |
| 3 | // Copyright (C) 2008-2019 Free Software Foundation, Inc. |
| 4 | // Written by Ian Lance Taylor <iant@google.com>. |
| 5 | |
| 6 | // This file is part of gold. |
| 7 | |
| 8 | // This program is free software; you can redistribute it and/or modify |
| 9 | // it under the terms of the GNU General Public License as published by |
| 10 | // the Free Software Foundation; either version 3 of the License, or |
| 11 | // (at your option) any later version. |
| 12 | |
| 13 | // This program is distributed in the hope that it will be useful, |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | // GNU General Public License for more details. |
| 17 | |
| 18 | // You should have received a copy of the GNU General Public License |
| 19 | // along with this program; if not, write to the Free Software |
| 20 | // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 21 | // MA 02110-1301, USA. |
| 22 | |
| 23 | // Support binary input files by making them look like an ELF file. |
| 24 | |
| 25 | #ifndef GOLD_BINARY_H |
| 26 | #define GOLD_BINARY_H |
| 27 | |
| 28 | #include <string> |
| 29 | |
| 30 | #include "elfcpp.h" |
| 31 | |
| 32 | namespace gold |
| 33 | { |
| 34 | |
| 35 | class Task; |
| 36 | |
| 37 | template<typename Stringpool_char> |
| 38 | class Stringpool_template; |
| 39 | |
| 40 | // This class takes a file name and creates a buffer which looks like |
| 41 | // an ELF file read into memory. |
| 42 | |
| 43 | class Binary_to_elf |
| 44 | { |
| 45 | public: |
| 46 | Binary_to_elf(elfcpp::EM machine, int size, bool big_endian, |
| 47 | const std::string& filename); |
| 48 | |
| 49 | ~Binary_to_elf(); |
| 50 | |
| 51 | // Read contents and create an ELF buffer. Return true if this |
| 52 | // succeeds, false otherwise. |
| 53 | bool |
| 54 | convert(const Task*); |
| 55 | |
| 56 | // Return a pointer to the contents of the ELF file. |
| 57 | const unsigned char* |
| 58 | converted_data() const |
| 59 | { return this->data_; } |
| 60 | |
| 61 | // Return a pointer to the contents of the ELF file and let the |
| 62 | // caller take charge of it. It was allocated using new[]. |
| 63 | unsigned char* |
| 64 | converted_data_leak() |
| 65 | { |
| 66 | unsigned char* ret = this->data_; |
| 67 | this->data_ = NULL; |
| 68 | return ret; |
| 69 | } |
| 70 | |
| 71 | // Return the size of the ELF file. |
| 72 | size_t |
| 73 | converted_size() const |
| 74 | { return this->filesize_; } |
| 75 | |
| 76 | private: |
| 77 | Binary_to_elf(const Binary_to_elf&); |
| 78 | Binary_to_elf& operator=(const Binary_to_elf&); |
| 79 | |
| 80 | template<int size, bool big_endian> |
| 81 | bool |
| 82 | sized_convert(const Task*); |
| 83 | |
| 84 | template<int size, bool big_endian> |
| 85 | void |
| 86 | write_file_header(unsigned char**); |
| 87 | |
| 88 | template<int size, bool big_endian> |
| 89 | void |
| 90 | write_section_header(const char*, const Stringpool_template<char>*, |
| 91 | elfcpp::SHT, unsigned int, section_size_type, |
| 92 | section_size_type, unsigned int, unsigned int, |
| 93 | unsigned int, unsigned int, unsigned char**); |
| 94 | |
| 95 | template<int size, bool big_endian> |
| 96 | void |
| 97 | write_symbol(const std::string&, const Stringpool_template<char>*, |
| 98 | section_size_type, typename elfcpp::Elf_types<32>::Elf_WXword, |
| 99 | unsigned int, unsigned char**); |
| 100 | |
| 101 | // The ELF machine code of the file to create. |
| 102 | elfcpp::EM elf_machine_; |
| 103 | // The size of the file to create, 32 or 64. |
| 104 | int size_; |
| 105 | // Whether to create a big endian file. |
| 106 | bool big_endian_; |
| 107 | // The name of the file to read. |
| 108 | std::string filename_; |
| 109 | // The ELF file data, allocated by new []. |
| 110 | unsigned char* data_; |
| 111 | // The ELF file size. |
| 112 | section_size_type filesize_; |
| 113 | }; |
| 114 | |
| 115 | } // End namespace gold. |
| 116 | |
| 117 | #endif // !defined(GOLD_BINARY_H) |