| 1 | // parameters.h -- general parameters for a link using gold -*- C++ -*- |
| 2 | |
| 3 | // Copyright 2006, 2007 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 | #ifndef GOLD_PARAMETERS_H |
| 24 | #define GOLD_PARAMETERS_H |
| 25 | |
| 26 | namespace gold |
| 27 | { |
| 28 | |
| 29 | class General_options; |
| 30 | |
| 31 | // Here we define the Parameters class which simply holds simple |
| 32 | // general parameters which apply to the entire link. We use a global |
| 33 | // variable for this. This is in contrast to the General_options |
| 34 | // class, which holds the complete state of position independent |
| 35 | // command line options. The hope is that Parameters will stay fairly |
| 36 | // simple, so that if this turns into a library it will be clear how |
| 37 | // these parameters should be set. |
| 38 | |
| 39 | class Parameters |
| 40 | { |
| 41 | public: |
| 42 | Parameters(const General_options*); |
| 43 | |
| 44 | // Whether we are generating a regular executable. |
| 45 | bool |
| 46 | output_is_executable() const |
| 47 | { return this->output_file_type_ == OUTPUT_EXECUTABLE; } |
| 48 | |
| 49 | // Whether we are generating a shared library. |
| 50 | bool |
| 51 | output_is_shared() const |
| 52 | { return this->output_file_type_ == OUTPUT_SHARED; } |
| 53 | |
| 54 | // Whether we are generating an object file. |
| 55 | bool |
| 56 | output_is_object() const |
| 57 | { return this->output_file_type_ == OUTPUT_OBJECT; } |
| 58 | |
| 59 | // The size of the output file we are generating. This should |
| 60 | // return 32 or 64. |
| 61 | int |
| 62 | get_size() const |
| 63 | { |
| 64 | gold_assert(this->is_size_and_endian_valid_); |
| 65 | return this->size_; |
| 66 | } |
| 67 | |
| 68 | // Whether the output is big endian. |
| 69 | bool |
| 70 | is_big_endian() const |
| 71 | { |
| 72 | gold_assert(this->is_size_and_endian_valid_); |
| 73 | return this->is_big_endian_; |
| 74 | } |
| 75 | |
| 76 | // The general linker optimization level. |
| 77 | int |
| 78 | optimization_level() const |
| 79 | { return this->optimization_level_; } |
| 80 | |
| 81 | // Set the size and endianness. |
| 82 | void |
| 83 | set_size_and_endianness(int size, bool is_big_endian); |
| 84 | |
| 85 | private: |
| 86 | // The types of output files. |
| 87 | enum Output_file_type |
| 88 | { |
| 89 | // Generating executable. |
| 90 | OUTPUT_EXECUTABLE, |
| 91 | // Generating shared library. |
| 92 | OUTPUT_SHARED, |
| 93 | // Generating object file. |
| 94 | OUTPUT_OBJECT |
| 95 | }; |
| 96 | |
| 97 | // The type of the output file. |
| 98 | Output_file_type output_file_type_; |
| 99 | // Whether the size_ and is_big_endian_ fields are valid. |
| 100 | bool is_size_and_endian_valid_; |
| 101 | // The size of the output file--32 or 64. |
| 102 | int size_; |
| 103 | // Whether the output file is big endian. |
| 104 | bool is_big_endian_; |
| 105 | // The optimization level. |
| 106 | int optimization_level_; |
| 107 | }; |
| 108 | |
| 109 | // This is a global variable. |
| 110 | extern const Parameters* parameters; |
| 111 | |
| 112 | // Initialize the global variable. |
| 113 | extern void initialize_parameters(const General_options*); |
| 114 | |
| 115 | // Set the size and endianness of the global parameters variable. |
| 116 | extern void set_parameters_size_and_endianness(int size, bool is_big_endian); |
| 117 | |
| 118 | } // End namespace gold. |
| 119 | |
| 120 | #endif // !defined(GOLD_PARAMATERS_H) |