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[binutils.git] / gold / defstd.cc
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1 // defstd.cc -- define standard symbols for gold.
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 #include "gold.h"
25 #include "symtab.h"
26 #include "layout.h"
27 #include "defstd.h"
29 // This is a simple file which defines the standard symbols like
30 // "_end".
32 namespace
35 using namespace gold;
37 const Define_symbol_in_section in_section[] =
40 "__preinit_array_start", // name
41 ".preinit_array", // output_section
42 0, // value
43 0, // size
44 elfcpp::STT_NOTYPE, // type
45 elfcpp::STB_GLOBAL, // binding
46 elfcpp::STV_HIDDEN, // visibility
47 0, // nonvis
48 false, // offset_is_from_end
49 true // only_if_ref
52 "__preinit_array_end", // name
53 ".preinit_array", // output_section
54 0, // value
55 0, // size
56 elfcpp::STT_NOTYPE, // type
57 elfcpp::STB_GLOBAL, // binding
58 elfcpp::STV_HIDDEN, // visibility
59 0, // nonvis
60 true, // offset_is_from_end
61 true // only_if_ref
64 "__init_array_start", // name
65 ".init_array", // output_section
66 0, // value
67 0, // size
68 elfcpp::STT_NOTYPE, // type
69 elfcpp::STB_GLOBAL, // binding
70 elfcpp::STV_HIDDEN, // visibility
71 0, // nonvis
72 false, // offset_is_from_end
73 true // only_if_ref
76 "__init_array_end", // name
77 ".init_array", // output_section
78 0, // value
79 0, // size
80 elfcpp::STT_NOTYPE, // type
81 elfcpp::STB_GLOBAL, // binding
82 elfcpp::STV_HIDDEN, // visibility
83 0, // nonvis
84 true, // offset_is_from_end
85 true // only_if_ref
88 "__fini_array_start", // name
89 ".fini_array", // output_section
90 0, // value
91 0, // size
92 elfcpp::STT_NOTYPE, // type
93 elfcpp::STB_GLOBAL, // binding
94 elfcpp::STV_HIDDEN, // visibility
95 0, // nonvis
96 false, // offset_is_from_end
97 true // only_if_ref
100 "__fini_array_end", // name
101 ".fini_array", // output_section
102 0, // value
103 0, // size
104 elfcpp::STT_NOTYPE, // type
105 elfcpp::STB_GLOBAL, // binding
106 elfcpp::STV_HIDDEN, // visibility
107 0, // nonvis
108 true, // offset_is_from_end
109 true // only_if_ref
113 const int in_section_count = sizeof in_section / sizeof in_section[0];
115 const Define_symbol_in_segment in_segment[] =
118 "__executable_start", // name
119 elfcpp::PT_LOAD, // segment_type
120 elfcpp::PF(0), // segment_flags_set
121 elfcpp::PF(0), // segment_flags_clear
122 0, // value
123 0, // size
124 elfcpp::STT_NOTYPE, // type
125 elfcpp::STB_GLOBAL, // binding
126 elfcpp::STV_DEFAULT, // visibility
127 0, // nonvis
128 Symbol::SEGMENT_START, // offset_from_base
129 true // only_if_ref
132 "etext", // name
133 elfcpp::PT_LOAD, // segment_type
134 elfcpp::PF_X, // segment_flags_set
135 elfcpp::PF_W, // segment_flags_clear
136 0, // value
137 0, // size
138 elfcpp::STT_NOTYPE, // type
139 elfcpp::STB_GLOBAL, // binding
140 elfcpp::STV_DEFAULT, // visibility
141 0, // nonvis
142 Symbol::SEGMENT_END, // offset_from_base
143 true // only_if_ref
146 "_etext", // name
147 elfcpp::PT_LOAD, // segment_type
148 elfcpp::PF_X, // segment_flags_set
149 elfcpp::PF_W, // segment_flags_clear
150 0, // value
151 0, // size
152 elfcpp::STT_NOTYPE, // type
153 elfcpp::STB_GLOBAL, // binding
154 elfcpp::STV_DEFAULT, // visibility
155 0, // nonvis
156 Symbol::SEGMENT_END, // offset_from_base
157 true // only_if_ref
160 "__etext", // name
161 elfcpp::PT_LOAD, // segment_type
162 elfcpp::PF_X, // segment_flags_set
163 elfcpp::PF_W, // segment_flags_clear
164 0, // value
165 0, // size
166 elfcpp::STT_NOTYPE, // type
167 elfcpp::STB_GLOBAL, // binding
168 elfcpp::STV_DEFAULT, // visibility
169 0, // nonvis
170 Symbol::SEGMENT_END, // offset_from_base
171 true // only_if_ref
174 "_edata", // name
175 elfcpp::PT_LOAD, // segment_type
176 elfcpp::PF_W, // segment_flags_set
177 elfcpp::PF(0), // segment_flags_clear
178 0, // value
179 0, // size
180 elfcpp::STT_NOTYPE, // type
181 elfcpp::STB_GLOBAL, // binding
182 elfcpp::STV_DEFAULT, // visibility
183 0, // nonvis
184 Symbol::SEGMENT_BSS, // offset_from_base
185 false // only_if_ref
188 "edata", // name
189 elfcpp::PT_LOAD, // segment_type
190 elfcpp::PF_W, // segment_flags_set
191 elfcpp::PF(0), // segment_flags_clear
192 0, // value
193 0, // size
194 elfcpp::STT_NOTYPE, // type
195 elfcpp::STB_GLOBAL, // binding
196 elfcpp::STV_DEFAULT, // visibility
197 0, // nonvis
198 Symbol::SEGMENT_BSS, // offset_from_base
199 true // only_if_ref
202 "__bss_start", // name
203 elfcpp::PT_LOAD, // segment_type
204 elfcpp::PF_W, // segment_flags_set
205 elfcpp::PF(0), // segment_flags_clear
206 0, // value
207 0, // size
208 elfcpp::STT_NOTYPE, // type
209 elfcpp::STB_GLOBAL, // binding
210 elfcpp::STV_DEFAULT, // visibility
211 0, // nonvis
212 Symbol::SEGMENT_BSS, // offset_from_base
213 false // only_if_ref
216 "_end", // name
217 elfcpp::PT_LOAD, // segment_type
218 elfcpp::PF_W, // segment_flags_set
219 elfcpp::PF(0), // segment_flags_clear
220 0, // value
221 0, // size
222 elfcpp::STT_NOTYPE, // type
223 elfcpp::STB_GLOBAL, // binding
224 elfcpp::STV_DEFAULT, // visibility
225 0, // nonvis
226 Symbol::SEGMENT_END, // offset_from_base
227 false // only_if_ref
230 "end", // name
231 elfcpp::PT_LOAD, // segment_type
232 elfcpp::PF_W, // segment_flags_set
233 elfcpp::PF(0), // segment_flags_clear
234 0, // value
235 0, // size
236 elfcpp::STT_NOTYPE, // type
237 elfcpp::STB_GLOBAL, // binding
238 elfcpp::STV_DEFAULT, // visibility
239 0, // nonvis
240 Symbol::SEGMENT_END, // offset_from_base
241 false // only_if_ref
245 const int in_segment_count = sizeof in_segment / sizeof in_segment[0];
247 } // End anonymous namespace.
249 namespace gold
252 void
253 define_standard_symbols(Symbol_table* symtab, const Layout* layout)
255 bool saw_sections_clause = layout->script_options()->saw_sections_clause();
256 symtab->define_symbols(layout, in_section_count, in_section,
257 saw_sections_clause);
258 symtab->define_symbols(layout, in_segment_count, in_segment,
259 saw_sections_clause);
262 } // End namespace gold.