1 // parameters.h -- general parameters for a link using gold -*- C++ -*-
3 // Copyright 2006, 2007 Free Software Foundation, Inc.
4 // Written by Ian Lance Taylor <iant@google.com>.
6 // This file is part of gold.
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.
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.
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.
23 #ifndef GOLD_PARAMETERS_H
24 #define GOLD_PARAMETERS_H
29 class General_options;
32 // Here we define the Parameters class which simply holds simple
33 // general parameters which apply to the entire link. We use a global
34 // variable for this. This is in contrast to the General_options
35 // class, which holds the complete state of position independent
36 // command line options. The hope is that Parameters will stay fairly
37 // simple, so that if this turns into a library it will be clear how
38 // these parameters should be set.
45 // Return the error object.
48 { return this->errors_; }
50 // Return the output file name.
52 output_file_name() const
54 gold_assert(this->options_valid_);
55 return this->output_file_name_;
58 // Whether we are generating a regular executable.
60 output_is_executable() const
62 gold_assert(this->output_file_type_ != OUTPUT_INVALID);
63 return this->output_file_type_ == OUTPUT_EXECUTABLE;
66 // Whether we are generating a shared library.
68 output_is_shared() const
70 gold_assert(this->output_file_type_ != OUTPUT_INVALID);
71 return this->output_file_type_ == OUTPUT_SHARED;
74 // Whether we are generating an object file.
76 output_is_object() const
78 gold_assert(this->output_file_type_ != OUTPUT_INVALID);
79 return this->output_file_type_ == OUTPUT_OBJECT;
82 // Whether we are generating position-independent output.
83 // This is the case when generating either a shared library
84 // or a regular executable with the --pic-executable option.
85 // FIXME: support --pic-executable
87 output_is_position_independent() const
88 { return output_is_shared(); }
90 // The target system root directory. This is NULL if there isn't
95 gold_assert(this->options_valid_);
96 return this->sysroot_;
99 // Whether to strip all symbols.
103 gold_assert(this->strip_ != STRIP_INVALID);
104 return this->strip_ == STRIP_ALL;
107 // Whether to strip debugging information.
111 gold_assert(this->strip_ != STRIP_INVALID);
112 return this->strip_ == STRIP_ALL || this->strip_ == STRIP_DEBUG;
115 // Whether we are doing a symbolic link, in which all defined
116 // symbols are bound locally.
120 gold_assert(this->options_valid_);
121 return this->symbolic_;
124 // The general linker optimization level.
126 optimization_level() const
128 gold_assert(this->options_valid_);
129 return this->optimization_level_;
132 // Whether the -E/--export-dynamic flag is set.
134 export_dynamic() const
136 gold_assert(this->options_valid_);
137 return this->export_dynamic_;
140 // Whether we are doing a static link--a link in which none of the
141 // input files are shared libraries. This is only known after we
142 // have seen all the input files.
144 doing_static_link() const
146 gold_assert(this->is_doing_static_link_valid_);
147 return this->doing_static_link_;
150 // The size of the output file we are generating. This should
155 gold_assert(this->is_size_and_endian_valid_);
159 // Whether the output is big endian.
161 is_big_endian() const
163 gold_assert(this->is_size_and_endian_valid_);
164 return this->is_big_endian_;
167 // Set values recorded from options.
169 set_from_options(const General_options*);
171 // Set whether we are doing a static link.
173 set_doing_static_link(bool doing_static_link);
175 // Set the size and endianness.
177 set_size_and_endianness(int size, bool is_big_endian);
180 // The types of output files.
181 enum Output_file_type
185 // Generating executable.
187 // Generating shared library.
189 // Generating object file.
193 // Which symbols to strip.
198 // Don't strip any symbols.
200 // Strip all symbols.
202 // Strip debugging information.
206 // A pointer to the error handling object.
209 // Whether the fields set from the options are valid.
211 // The output file name.
212 const char* output_file_name_;
213 // The type of the output file.
214 Output_file_type output_file_type_;
215 // The target system root directory.
216 std::string sysroot_;
217 // Which symbols to strip.
219 // Whether we are doing a symbolic link.
221 // The optimization level.
222 int optimization_level_;
223 // Whether the -E/--export-dynamic flag is set.
224 bool export_dynamic_;
226 // Whether the doing_static_link_ field is valid.
227 bool is_doing_static_link_valid_;
228 // Whether we are doing a static link.
229 bool doing_static_link_;
230 // Whether the size_ and is_big_endian_ fields are valid.
231 bool is_size_and_endian_valid_;
232 // The size of the output file--32 or 64.
234 // Whether the output file is big endian.
238 // This is a global variable.
239 extern const Parameters* parameters;
241 // Initialize the global variable.
242 extern void initialize_parameters(Errors*);
245 extern void set_parameters_from_options(const General_options*);
247 // Set the size and endianness of the global parameters variable.
248 extern void set_parameters_size_and_endianness(int size, bool is_big_endian);
250 // Set whether we are doing a static link.
251 extern void set_parameters_doing_static_link(bool doing_static_link);
253 } // End namespace gold.
255 #endif // !defined(GOLD_PARAMETERS_H)