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dbe717ef ILT |
1 | // script.h -- handle linker scripts for gold -*- C++ -*- |
2 | ||
4b95cf5c | 3 | // Copyright (C) 2006-2014 Free Software Foundation, Inc. |
6cb15b7f ILT |
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 | ||
dbe717ef ILT |
23 | // We implement a subset of the original GNU ld linker script language |
24 | // for compatibility. The goal is not to implement the entire | |
25 | // language. It is merely to implement enough to handle common uses. | |
26 | // In particular we need to handle /usr/lib/libc.so on a typical | |
27 | // GNU/Linux system, and we want to handle linker scripts used by the | |
28 | // Linux kernel build. | |
29 | ||
30 | #ifndef GOLD_SCRIPT_H | |
31 | #define GOLD_SCRIPT_H | |
32 | ||
494e05f4 | 33 | #include <cstdio> |
04bf7072 | 34 | #include <string> |
e5756efb ILT |
35 | #include <vector> |
36 | ||
494e05f4 | 37 | #include "script-sections.h" |
09124467 | 38 | |
dbe717ef ILT |
39 | namespace gold |
40 | { | |
41 | ||
42 | class General_options; | |
3c2fafa5 | 43 | class Command_line; |
dbe717ef ILT |
44 | class Symbol_table; |
45 | class Layout; | |
7d9e3d98 | 46 | class Mapfile; |
3c2fafa5 | 47 | class Input_argument; |
072fe7ce | 48 | class Input_arguments; |
dbe717ef ILT |
49 | class Input_objects; |
50 | class Input_group; | |
51 | class Input_file; | |
a445fddf | 52 | class Output_segment; |
dbe717ef | 53 | class Task_token; |
3c2fafa5 | 54 | class Workqueue; |
494e05f4 ILT |
55 | struct Version_dependency_list; |
56 | struct Version_expression_list; | |
57 | struct Version_tree; | |
98e090bd ILT |
58 | struct Version_expression; |
59 | class Lazy_demangler; | |
c7975edd | 60 | class Incremental_script_entry; |
dbe717ef | 61 | |
e5756efb ILT |
62 | // This class represents an expression in a linker script. |
63 | ||
64 | class Expression | |
65 | { | |
66 | protected: | |
67 | // These should only be created by child classes. | |
68 | Expression() | |
69 | { } | |
70 | ||
71 | public: | |
72 | virtual ~Expression() | |
73 | { } | |
74 | ||
a445fddf | 75 | // Return the value of the expression which is not permitted to |
919ed24c ILT |
76 | // refer to the dot symbol. CHECK_ASSERTIONS is true if we should |
77 | // check whether assertions are true. | |
e5756efb | 78 | uint64_t |
919ed24c | 79 | eval(const Symbol_table*, const Layout*, bool check_assertions); |
e5756efb | 80 | |
a445fddf | 81 | // Return the value of an expression which is permitted to refer to |
77e65537 ILT |
82 | // the dot symbol. DOT_VALUE is the absolute value of the dot |
83 | // symbol. DOT_SECTION is the section in which dot is defined; it | |
84 | // should be NULL if the dot symbol has an absolute value (e.g., is | |
85 | // defined in a SECTIONS clause outside of any output section | |
86 | // definition). This sets *RESULT_SECTION to indicate where the | |
87 | // value is defined. If the value is absolute *RESULT_SECTION will | |
88 | // be NULL. Note that the returned value is still an absolute | |
89 | // value; to get a section relative value the caller must subtract | |
f6973bdc ILT |
90 | // the section address. If RESULT_ALIGNMENT is not NULL, this sets |
91 | // *RESULT_ALIGNMENT to the alignment of the value of that alignment | |
92 | // is larger than *RESULT_ALIGNMENT; this will only be non-zero if | |
286adcf4 CC |
93 | // this is an ALIGN expression. If IS_SECTION_DOT_ASSIGMENT is true, |
94 | // we are evaluating an assignment to dot within an output section, | |
95 | // and an absolute value should be interpreted as an offset within | |
96 | // the section. | |
a445fddf | 97 | uint64_t |
919ed24c ILT |
98 | eval_with_dot(const Symbol_table*, const Layout*, bool check_assertions, |
99 | uint64_t dot_value, Output_section* dot_section, | |
286adcf4 CC |
100 | Output_section** result_section, uint64_t* result_alignment, |
101 | bool is_section_dot_assignment); | |
a445fddf ILT |
102 | |
103 | // Return the value of an expression which may or may not be | |
104 | // permitted to refer to the dot symbol, depending on | |
286adcf4 CC |
105 | // is_dot_available. If IS_SECTION_DOT_ASSIGMENT is true, |
106 | // we are evaluating an assignment to dot within an output section, | |
107 | // and an absolute value should be interpreted as an offset within | |
108 | // the section. | |
a445fddf | 109 | uint64_t |
919ed24c ILT |
110 | eval_maybe_dot(const Symbol_table*, const Layout*, bool check_assertions, |
111 | bool is_dot_available, uint64_t dot_value, | |
112 | Output_section* dot_section, | |
286adcf4 CC |
113 | Output_section** result_section, uint64_t* result_alignment, |
114 | bool is_section_dot_assignment); | |
a445fddf | 115 | |
494e05f4 ILT |
116 | // Print the expression to the FILE. This is for debugging. |
117 | virtual void | |
118 | print(FILE*) const = 0; | |
119 | ||
e5756efb ILT |
120 | protected: |
121 | struct Expression_eval_info; | |
122 | ||
123 | public: | |
124 | // Compute the value of the expression (implemented by child class). | |
125 | // This is public rather than protected because it is called | |
126 | // directly by children of Expression on other Expression objects. | |
127 | virtual uint64_t | |
128 | value(const Expression_eval_info*) = 0; | |
129 | ||
130 | private: | |
131 | // May not be copied. | |
132 | Expression(const Expression&); | |
133 | Expression& operator=(const Expression&); | |
134 | }; | |
135 | ||
09124467 ILT |
136 | |
137 | // Version_script_info stores information parsed from the version | |
138 | // script, either provided by --version-script or as part of a linker | |
139 | // script. A single Version_script_info object per target is owned by | |
140 | // Script_options. | |
141 | ||
494e05f4 ILT |
142 | class Version_script_info |
143 | { | |
09124467 | 144 | public: |
6affe781 ILT |
145 | // The languages which can be specified in a versionn script. |
146 | enum Language | |
147 | { | |
148 | LANGUAGE_C, // No demangling. | |
149 | LANGUAGE_CXX, // C++ demangling. | |
150 | LANGUAGE_JAVA, // Java demangling. | |
151 | LANGUAGE_COUNT | |
152 | }; | |
153 | ||
154 | Version_script_info(); | |
155 | ||
09124467 ILT |
156 | ~Version_script_info(); |
157 | ||
1ef1f3d3 ILT |
158 | // Clear everything. |
159 | void | |
160 | clear(); | |
161 | ||
6affe781 ILT |
162 | // Finalize the version control information. |
163 | void | |
164 | finalize(); | |
165 | ||
166 | // Return whether the information is finalized. | |
167 | bool | |
168 | is_finalized() const | |
169 | { return this->is_finalized_; } | |
170 | ||
09124467 ILT |
171 | // Return whether any version were defined in the version script. |
172 | bool | |
173 | empty() const | |
174 | { return this->version_trees_.empty(); } | |
175 | ||
057ead22 | 176 | // If there is a version associated with SYMBOL, return true, and |
98e090bd ILT |
177 | // set *VERSION to the version, and *IS_GLOBAL to whether the symbol |
178 | // should be global. Otherwise, return false. | |
057ead22 | 179 | bool |
98e090bd ILT |
180 | get_symbol_version(const char* symbol, std::string* version, |
181 | bool* is_global) const; | |
057ead22 ILT |
182 | |
183 | // Return whether this symbol matches the local: section of some | |
184 | // version. | |
09124467 ILT |
185 | bool |
186 | symbol_is_local(const char* symbol) const | |
98e090bd ILT |
187 | { |
188 | bool is_global; | |
189 | return (this->get_symbol_version(symbol, NULL, &is_global) | |
190 | && !is_global); | |
191 | } | |
09124467 ILT |
192 | |
193 | // Return the names of versions defined in the version script. | |
09124467 ILT |
194 | std::vector<std::string> |
195 | get_versions() const; | |
196 | ||
197 | // Return the list of dependencies for this version. | |
198 | std::vector<std::string> | |
199 | get_dependencies(const char* version) const; | |
200 | ||
201 | // The following functions should only be used by the bison helper | |
202 | // functions. They allocate new structs whose memory belongs to | |
203 | // Version_script_info. The bison functions copy the information | |
204 | // from the version script into these structs. | |
205 | struct Version_dependency_list* | |
206 | allocate_dependency_list(); | |
207 | ||
208 | struct Version_expression_list* | |
209 | allocate_expression_list(); | |
210 | ||
211 | struct Version_tree* | |
212 | allocate_version_tree(); | |
213 | ||
6affe781 ILT |
214 | // Build the lookup tables after all data have been read. |
215 | void | |
216 | build_lookup_tables(); | |
217 | ||
62dfdd4d ILT |
218 | // Give an error if there are any unmatched names in the version |
219 | // script. | |
220 | void | |
221 | check_unmatched_names(const Symbol_table*) const; | |
222 | ||
494e05f4 ILT |
223 | // Print contents to the FILE. This is for debugging. |
224 | void | |
225 | print(FILE*) const; | |
226 | ||
09124467 | 227 | private: |
494e05f4 ILT |
228 | void |
229 | print_expression_list(FILE* f, const Version_expression_list*) const; | |
230 | ||
6affe781 ILT |
231 | bool |
232 | get_symbol_version_helper(const char* symbol, | |
233 | bool check_global, | |
234 | std::string* pversion) const; | |
235 | ||
98e090bd ILT |
236 | // Fast lookup information for a given language. |
237 | ||
238 | // We map from exact match strings to Version_tree's. Historically | |
239 | // version scripts sometimes have the same symbol multiple times, | |
240 | // which is ambiguous. We warn about that case by storing the | |
241 | // second Version_tree we see. | |
242 | struct Version_tree_match | |
243 | { | |
244 | Version_tree_match(const Version_tree* r, bool ig, | |
245 | const Version_expression* e) | |
246 | : real(r), is_global(ig), expression(e), ambiguous(NULL) | |
247 | { } | |
248 | ||
249 | // The Version_tree that we return. | |
250 | const Version_tree* real; | |
251 | // True if this is a global match for the REAL member, false if it | |
252 | // is a local match. | |
253 | bool is_global; | |
254 | // Point back to the Version_expression for which we created this | |
255 | // match. | |
256 | const Version_expression* expression; | |
257 | // If not NULL, another Version_tree that defines the symbol. | |
258 | const Version_tree* ambiguous; | |
259 | }; | |
260 | ||
261 | // Map from an exact match string to a Version_tree. | |
262 | ||
263 | typedef Unordered_map<std::string, Version_tree_match> Exact; | |
62dfdd4d | 264 | |
6affe781 ILT |
265 | // Fast lookup information for a glob pattern. |
266 | struct Glob | |
267 | { | |
268 | Glob() | |
98e090bd | 269 | : expression(NULL), version(NULL), is_global(false) |
6affe781 ILT |
270 | { } |
271 | ||
98e090bd ILT |
272 | Glob(const Version_expression* e, const Version_tree* v, bool ig) |
273 | : expression(e), version(v), is_global(ig) | |
6affe781 ILT |
274 | { } |
275 | ||
98e090bd ILT |
276 | // A pointer to the version expression holding the pattern to |
277 | // match and the language to use for demangling the symbol before | |
278 | // doing the match. | |
279 | const Version_expression* expression; | |
6affe781 ILT |
280 | // The Version_tree we use if this pattern matches. |
281 | const Version_tree* version; | |
98e090bd ILT |
282 | // True if this is a global symbol. |
283 | bool is_global; | |
6affe781 ILT |
284 | }; |
285 | ||
98e090bd | 286 | typedef std::vector<Glob> Globs; |
6affe781 | 287 | |
98e090bd ILT |
288 | bool |
289 | unquote(std::string*) const; | |
6affe781 | 290 | |
98e090bd ILT |
291 | void |
292 | add_exact_match(const std::string&, const Version_tree*, bool is_global, | |
293 | const Version_expression*, Exact*); | |
09124467 | 294 | |
6affe781 ILT |
295 | void |
296 | build_expression_list_lookup(const Version_expression_list*, | |
98e090bd ILT |
297 | const Version_tree*, bool); |
298 | ||
299 | const char* | |
300 | get_name_to_match(const char*, int, | |
301 | Lazy_demangler*, Lazy_demangler*) const; | |
6affe781 ILT |
302 | |
303 | // All the version dependencies we allocate. | |
304 | std::vector<Version_dependency_list*> dependency_lists_; | |
305 | // All the version expressions we allocate. | |
306 | std::vector<Version_expression_list*> expression_lists_; | |
307 | // The list of versions. | |
308 | std::vector<Version_tree*> version_trees_; | |
98e090bd ILT |
309 | // Exact matches for global symbols, by language. |
310 | Exact* exact_[LANGUAGE_COUNT]; | |
311 | // A vector of glob patterns mapping to Version_trees. | |
312 | Globs globs_; | |
313 | // The default version to use, if there is one. This is from a | |
314 | // pattern of "*". | |
315 | const Version_tree* default_version_; | |
316 | // True if the default version is global. | |
317 | bool default_is_global_; | |
6affe781 ILT |
318 | // Whether this has been finalized. |
319 | bool is_finalized_; | |
09124467 ILT |
320 | }; |
321 | ||
494e05f4 ILT |
322 | // This class manages assignments to symbols. These can appear in |
323 | // three different locations in scripts: outside of a SECTIONS clause, | |
324 | // within a SECTIONS clause, and within an output section definition | |
325 | // within a SECTIONS clause. This can also appear on the command line | |
326 | // via the --defsym command line option. | |
327 | ||
328 | class Symbol_assignment | |
329 | { | |
330 | public: | |
99fff23b ILT |
331 | Symbol_assignment(const char* name, size_t namelen, bool is_defsym, |
332 | Expression* val, bool provide, bool hidden) | |
333 | : name_(name, namelen), val_(val), is_defsym_(is_defsym), | |
334 | provide_(provide), hidden_(hidden), sym_(NULL) | |
494e05f4 ILT |
335 | { } |
336 | ||
337 | // Add the symbol to the symbol table. | |
338 | void | |
9b07f471 | 339 | add_to_table(Symbol_table*); |
494e05f4 ILT |
340 | |
341 | // Finalize the symbol value. | |
a445fddf ILT |
342 | void |
343 | finalize(Symbol_table*, const Layout*); | |
344 | ||
345 | // Finalize the symbol value when it can refer to the dot symbol. | |
346 | void | |
77e65537 ILT |
347 | finalize_with_dot(Symbol_table*, const Layout*, uint64_t dot_value, |
348 | Output_section* dot_section); | |
a445fddf | 349 | |
286adcf4 CC |
350 | // Set the symbol value, but only if the value is absolute or relative to |
351 | // DOT_SECTION. This is used while processing a SECTIONS clause. | |
352 | // We assume that dot is an absolute value here. We do not check assertions. | |
a445fddf ILT |
353 | void |
354 | set_if_absolute(Symbol_table*, const Layout*, bool is_dot_available, | |
286adcf4 | 355 | uint64_t dot_value, Output_section* dot_section); |
494e05f4 | 356 | |
e597fa08 NC |
357 | const std::string& |
358 | name() const | |
359 | { return this->name_; } | |
360 | ||
494e05f4 ILT |
361 | // Print the assignment to the FILE. This is for debugging. |
362 | void | |
363 | print(FILE*) const; | |
364 | ||
365 | private: | |
a445fddf ILT |
366 | // Shared by finalize and finalize_with_dot. |
367 | void | |
368 | finalize_maybe_dot(Symbol_table*, const Layout*, bool is_dot_available, | |
77e65537 | 369 | uint64_t dot_value, Output_section* dot_section); |
a445fddf | 370 | |
494e05f4 ILT |
371 | // Sized version of finalize. |
372 | template<int size> | |
373 | void | |
a445fddf | 374 | sized_finalize(Symbol_table*, const Layout*, bool is_dot_available, |
77e65537 | 375 | uint64_t dot_value, Output_section*); |
494e05f4 ILT |
376 | |
377 | // Symbol name. | |
378 | std::string name_; | |
379 | // Expression to assign to symbol. | |
380 | Expression* val_; | |
99fff23b ILT |
381 | // True if this symbol is defined by a --defsym, false if it is |
382 | // defined in a linker script. | |
383 | bool is_defsym_; | |
494e05f4 ILT |
384 | // Whether the assignment should be provided (only set if there is |
385 | // an undefined reference to the symbol. | |
386 | bool provide_; | |
387 | // Whether the assignment should be hidden. | |
388 | bool hidden_; | |
389 | // The entry in the symbol table. | |
390 | Symbol* sym_; | |
391 | }; | |
392 | ||
393 | // This class manages assertions in linker scripts. These can appear | |
394 | // in all the places where a Symbol_assignment can appear. | |
395 | ||
396 | class Script_assertion | |
397 | { | |
398 | public: | |
2ea97941 | 399 | Script_assertion(Expression* check, const char* message, |
494e05f4 | 400 | size_t messagelen) |
2ea97941 | 401 | : check_(check), message_(message, messagelen) |
494e05f4 ILT |
402 | { } |
403 | ||
404 | // Check the assertion. | |
405 | void | |
406 | check(const Symbol_table*, const Layout*); | |
407 | ||
408 | // Print the assertion to the FILE. This is for debugging. | |
409 | void | |
410 | print(FILE*) const; | |
411 | ||
412 | private: | |
413 | // The expression to check. | |
414 | Expression* check_; | |
415 | // The message to issue if the expression fails. | |
416 | std::string message_; | |
417 | }; | |
418 | ||
e5756efb ILT |
419 | // We can read a linker script in two different contexts: when |
420 | // initially parsing the command line, and when we find an input file | |
421 | // which is actually a linker script. Also some of the data which can | |
422 | // be set by a linker script can also be set via command line options | |
423 | // like -e and --defsym. This means that we have a type of data which | |
424 | // can be set both during command line option parsing and while | |
425 | // reading input files. We store that data in an instance of this | |
426 | // object. We will keep pointers to that instance in both the | |
427 | // Command_line and Layout objects. | |
428 | ||
429 | class Script_options | |
430 | { | |
431 | public: | |
432 | Script_options(); | |
433 | ||
494e05f4 | 434 | // Add a symbol to be defined. |
e5756efb | 435 | void |
99fff23b ILT |
436 | add_symbol_assignment(const char* name, size_t length, bool is_defsym, |
437 | Expression* value, bool provide, bool hidden); | |
494e05f4 | 438 | |
e597fa08 NC |
439 | // Look for an assigned symbol. |
440 | bool | |
441 | is_pending_assignment(const char* name); | |
442 | ||
88a4108b ILT |
443 | // Add a reference to a symbol. |
444 | void | |
445 | add_symbol_reference(const char* name, size_t length); | |
446 | ||
494e05f4 ILT |
447 | // Add an assertion. |
448 | void | |
449 | add_assertion(Expression* check, const char* message, size_t messagelen); | |
e5756efb ILT |
450 | |
451 | // Define a symbol from the command line. | |
452 | bool | |
453 | define_symbol(const char* definition); | |
454 | ||
919ed24c ILT |
455 | // Create sections required by any linker scripts. |
456 | void | |
457 | create_script_sections(Layout*); | |
458 | ||
e5756efb ILT |
459 | // Add all symbol definitions to the symbol table. |
460 | void | |
9b07f471 | 461 | add_symbols_to_table(Symbol_table*); |
e5756efb | 462 | |
88a4108b ILT |
463 | // Used to iterate over symbols which are referenced in expressions |
464 | // but not defined. | |
465 | typedef Unordered_set<std::string>::const_iterator referenced_const_iterator; | |
466 | ||
467 | referenced_const_iterator | |
468 | referenced_begin() const | |
469 | { return this->symbol_references_.begin(); } | |
470 | ||
471 | referenced_const_iterator | |
472 | referenced_end() const | |
473 | { return this->symbol_references_.end(); } | |
474 | ||
475 | // Return whether a symbol is referenced but not defined. | |
476 | bool | |
477 | is_referenced(const std::string& name) const | |
478 | { | |
479 | return (this->symbol_references_.find(name) | |
480 | != this->symbol_references_.end()); | |
481 | } | |
482 | ||
483 | // Return whether there are any symbols which were referenced but | |
484 | // not defined. | |
485 | bool | |
486 | any_unreferenced() const | |
487 | { return !this->symbol_references_.empty(); } | |
488 | ||
a445fddf | 489 | // Finalize the symbol values. Also check assertions. |
e5756efb ILT |
490 | void |
491 | finalize_symbols(Symbol_table*, const Layout*); | |
492 | ||
09124467 ILT |
493 | // Version information parsed from a version script. Everything |
494 | // else has a pointer to this object. | |
495 | Version_script_info* | |
496 | version_script_info() | |
494e05f4 | 497 | { return &this->version_script_info_; } |
09124467 | 498 | |
a5dc0706 ILT |
499 | const Version_script_info* |
500 | version_script_info() const | |
501 | { return &this->version_script_info_; } | |
502 | ||
494e05f4 ILT |
503 | // A SECTIONS clause parsed from a linker script. Everything else |
504 | // has a pointer to this object. | |
505 | Script_sections* | |
506 | script_sections() | |
507 | { return &this->script_sections_; } | |
e5756efb | 508 | |
8f2eb564 ILT |
509 | const Script_sections* |
510 | script_sections() const | |
511 | { return &this->script_sections_; } | |
512 | ||
a445fddf ILT |
513 | // Whether we saw a SECTIONS clause. |
514 | bool | |
515 | saw_sections_clause() const | |
516 | { return this->script_sections_.saw_sections_clause(); } | |
517 | ||
1c4f3631 ILT |
518 | // Whether we saw a PHDRS clause. |
519 | bool | |
520 | saw_phdrs_clause() const | |
521 | { return this->script_sections_.saw_phdrs_clause(); } | |
522 | ||
a445fddf ILT |
523 | // Set section addresses using a SECTIONS clause. Return the |
524 | // segment which should hold the file header and segment headers; | |
525 | // this may return NULL, in which case the headers are not in a | |
526 | // loadable segment. | |
527 | Output_segment* | |
528 | set_section_addresses(Symbol_table*, Layout*); | |
529 | ||
494e05f4 | 530 | // Print the script to the FILE. This is for debugging. |
e5756efb | 531 | void |
494e05f4 ILT |
532 | print(FILE*) const; |
533 | ||
534 | private: | |
535 | // We keep a list of symbol assignments which occur outside of a | |
536 | // SECTIONS clause. | |
537 | typedef std::vector<Symbol_assignment*> Symbol_assignments; | |
538 | ||
539 | // We keep a list of all assertions whcih occur outside of a | |
540 | // SECTIONS clause. | |
541 | typedef std::vector<Script_assertion*> Assertions; | |
e5756efb ILT |
542 | |
543 | // The entry address. This will be empty if not set. | |
544 | std::string entry_; | |
545 | // Symbols to set. | |
546 | Symbol_assignments symbol_assignments_; | |
88a4108b ILT |
547 | // Symbols defined in an expression, for faster lookup. |
548 | Unordered_set<std::string> symbol_definitions_; | |
549 | // Symbols referenced in an expression. | |
550 | Unordered_set<std::string> symbol_references_; | |
494e05f4 ILT |
551 | // Assertions to check. |
552 | Assertions assertions_; | |
09124467 ILT |
553 | // Version information parsed from a version script. |
554 | Version_script_info version_script_info_; | |
494e05f4 ILT |
555 | // Information from any SECTIONS clauses. |
556 | Script_sections script_sections_; | |
e5756efb ILT |
557 | }; |
558 | ||
dbe717ef | 559 | // FILE was found as an argument on the command line, but was not |
da769d56 ILT |
560 | // recognized as an ELF file. Try to read it as a script. Return |
561 | // true if the file was handled. This has to handle /usr/lib/libc.so | |
562 | // on a GNU/Linux system. *USED_NEXT_BLOCKER is set to indicate | |
563 | // whether the function took over NEXT_BLOCKER. | |
dbe717ef ILT |
564 | |
565 | bool | |
15f8229b | 566 | read_input_script(Workqueue*, Symbol_table*, Layout*, Dirsearch*, int, |
f1ed28fb | 567 | Input_objects*, Mapfile*, Input_group*, |
da769d56 ILT |
568 | const Input_argument*, Input_file*, |
569 | Task_token* next_blocker, bool* used_next_blocker); | |
dbe717ef | 570 | |
3c2fafa5 ILT |
571 | // FILE was found as an argument to --script (-T). |
572 | // Read it as a script, and execute its contents immediately. | |
573 | ||
574 | bool | |
c82fbeee | 575 | read_commandline_script(const char* filename, Command_line* cmdline); |
3c2fafa5 | 576 | |
09124467 ILT |
577 | // FILE was found as an argument to --version-script. Read it as a |
578 | // version script, and store its contents in | |
579 | // cmdline->script_options()->version_script_info(). | |
580 | ||
581 | bool | |
582 | read_version_script(const char* filename, Command_line* cmdline); | |
583 | ||
c82fbeee CS |
584 | // FILENAME was found as an argument to --dynamic-list. Read it as a |
585 | // version script (actually, a versym_node from a version script), and | |
586 | // store its contents in DYNAMIC_LIST. | |
587 | ||
588 | bool | |
589 | read_dynamic_list(const char* filename, Command_line* cmdline, | |
590 | Script_options* dynamic_list); | |
591 | ||
dbe717ef ILT |
592 | } // End namespace gold. |
593 | ||
594 | #endif // !defined(GOLD_SCRIPT_H) |