1 // binary.h -- binary input files for gold -*- C++ -*- 2 3 // Copyright (C) 2008-2020 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) 118