Commit | Line | Data |
---|---|---|
dbe717ef ILT |
1 | /* script-c.h -- C interface for linker scripts in gold. */ |
2 | ||
e5756efb | 3 | /* Copyright 2006, 2007, 2008 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 | /* This file exists so that both the bison parser and script.cc can |
24 | include it, so that they can communicate back and forth. */ | |
25 | ||
26 | #ifndef GOLD_SCRIPT_C_H | |
27 | #define GOLD_SCRIPT_C_H | |
28 | ||
29 | #ifdef __cplusplus | |
494e05f4 ILT |
30 | #include <vector> |
31 | #include <string> | |
32 | #endif | |
33 | ||
34 | #ifdef __cplusplus | |
35 | ||
36 | // For the C++ code we declare the various supporting structures in | |
37 | // the gold namespace. For the C code we declare it at the top level. | |
38 | // The namespace level should not affect the layout of the structure. | |
39 | ||
40 | namespace gold | |
41 | { | |
dbe717ef ILT |
42 | #endif |
43 | ||
e5756efb ILT |
44 | /* A string value for the bison parser. */ |
45 | ||
46 | struct Parser_string | |
47 | { | |
48 | const char* value; | |
49 | size_t length; | |
50 | }; | |
51 | ||
52 | /* The expression functions deal with pointers to Expression objects. | |
53 | Since the bison parser generates C code, this is a hack to keep the | |
54 | C++ code type safe. This hacks assumes that all pointers look | |
55 | alike. */ | |
56 | ||
57 | #ifdef __cplusplus | |
e5756efb | 58 | class Expression; |
494e05f4 | 59 | typedef Expression* Expression_ptr; |
e5756efb ILT |
60 | #else |
61 | typedef void* Expression_ptr; | |
62 | #endif | |
63 | ||
494e05f4 ILT |
64 | /* The information we store for an output section header in the bison |
65 | parser. */ | |
66 | ||
67 | struct Parser_output_section_header | |
68 | { | |
69 | /* The address. This may be NULL. */ | |
70 | Expression_ptr address; | |
71 | /* The load address, from the AT specifier. This may be NULL. */ | |
72 | Expression_ptr load_address; | |
73 | /* The alignment, from the ALIGN specifier. This may be NULL. */ | |
74 | Expression_ptr align; | |
75 | /* The input section alignment, from the SUBALIGN specifier. This | |
76 | may be NULL. */ | |
77 | Expression_ptr subalign; | |
78 | }; | |
79 | ||
80 | /* The information we store for an output section trailer in the bison | |
81 | parser. */ | |
82 | ||
83 | struct Parser_output_section_trailer | |
84 | { | |
85 | /* The fill value. This may be NULL. */ | |
86 | Expression_ptr fill; | |
87 | }; | |
88 | ||
89 | /* We keep vectors of strings. In order to manage this in both C and | |
90 | C++, we use a pointer to a vector. This assumes that all pointers | |
91 | look the same. */ | |
92 | ||
93 | #ifdef __cplusplus | |
94 | typedef std::vector<std::string> String_list; | |
95 | typedef String_list* String_list_ptr; | |
96 | #else | |
97 | typedef void* String_list_ptr; | |
98 | #endif | |
99 | ||
100 | /* The different sorts we can find in a linker script. */ | |
101 | ||
102 | enum Sort_wildcard | |
103 | { | |
104 | SORT_WILDCARD_NONE, | |
105 | SORT_WILDCARD_BY_NAME, | |
106 | SORT_WILDCARD_BY_ALIGNMENT, | |
107 | SORT_WILDCARD_BY_NAME_BY_ALIGNMENT, | |
108 | SORT_WILDCARD_BY_ALIGNMENT_BY_NAME | |
109 | }; | |
110 | ||
111 | /* The information we build for a single wildcard specification. */ | |
112 | ||
113 | struct Wildcard_section | |
114 | { | |
115 | /* The wildcard spec itself. */ | |
116 | struct Parser_string name; | |
117 | /* How the entries should be sorted. */ | |
118 | enum Sort_wildcard sort; | |
119 | }; | |
120 | ||
121 | /* A vector of Wildcard_section entries. */ | |
122 | ||
123 | #ifdef __cplusplus | |
124 | typedef std::vector<Wildcard_section> String_sort_list; | |
125 | typedef String_sort_list* String_sort_list_ptr; | |
126 | #else | |
127 | typedef void* String_sort_list_ptr; | |
128 | #endif | |
129 | ||
130 | /* A list of wildcard specifications, which may include EXCLUDE_FILE | |
131 | clauses. */ | |
132 | ||
133 | struct Wildcard_sections | |
134 | { | |
135 | /* Wildcard specs. */ | |
136 | String_sort_list_ptr sections; | |
137 | /* Exclusions. */ | |
138 | String_list_ptr exclude; | |
139 | }; | |
140 | ||
141 | /* A complete input section specification. */ | |
142 | ||
143 | struct Input_section_spec | |
144 | { | |
145 | /* The file name. */ | |
146 | struct Wildcard_section file; | |
147 | /* The list of sections. */ | |
148 | struct Wildcard_sections input_sections; | |
149 | }; | |
150 | ||
151 | struct Version_dependency_list; | |
152 | struct Version_expression_list; | |
153 | struct Version_tree; | |
154 | ||
155 | #ifdef __cplusplus | |
156 | extern "C" { | |
157 | #endif | |
158 | ||
e5756efb ILT |
159 | /* The bison parser definitions. */ |
160 | ||
dbe717ef ILT |
161 | #include "yyscript.h" |
162 | ||
163 | /* The bison parser function. */ | |
164 | ||
165 | extern int | |
166 | yyparse(void* closure); | |
167 | ||
168 | /* Called by the bison parser skeleton to return the next token. */ | |
169 | ||
170 | extern int | |
171 | yylex(YYSTYPE*, void* closure); | |
172 | ||
173 | /* Called by the bison parser skeleton to report an error. */ | |
174 | ||
175 | extern void | |
176 | yyerror(void* closure, const char*); | |
177 | ||
178 | /* Called by the bison parser to add a file to the link. */ | |
179 | ||
180 | extern void | |
e5756efb | 181 | script_add_file(void* closure, const char*, size_t); |
dbe717ef ILT |
182 | |
183 | /* Called by the bison parser to start and stop a group. */ | |
184 | ||
185 | extern void | |
186 | script_start_group(void* closure); | |
187 | extern void | |
188 | script_end_group(void* closure); | |
189 | ||
190 | /* Called by the bison parser to start and end an AS_NEEDED list. */ | |
191 | ||
192 | extern void | |
193 | script_start_as_needed(void* closure); | |
194 | extern void | |
195 | script_end_as_needed(void* closure); | |
196 | ||
d391083d ILT |
197 | /* Called by the bison parser to set the entry symbol. */ |
198 | ||
199 | extern void | |
e5756efb | 200 | script_set_entry(void* closure, const char*, size_t); |
d391083d | 201 | |
195e7dc6 | 202 | /* Called by the bison parser to parse an OPTION. */ |
e5756efb ILT |
203 | |
204 | extern void | |
205 | script_parse_option(void* closure, const char*, size_t); | |
206 | ||
207 | /* Called by the bison parser to push the lexer into expression | |
208 | mode. */ | |
209 | ||
210 | extern void | |
211 | script_push_lex_into_expression_mode(void* closure); | |
212 | ||
09124467 ILT |
213 | /* Called by the bison parser to push the lexer into version |
214 | mode. */ | |
215 | ||
216 | extern void | |
217 | script_push_lex_into_version_mode(void* closure); | |
218 | ||
e5756efb ILT |
219 | /* Called by the bison parser to pop the lexer mode. */ |
220 | ||
221 | extern void | |
222 | script_pop_lex_mode(void* closure); | |
223 | ||
224 | /* Called by the bison parser to set a symbol to a value. PROVIDE is | |
225 | non-zero if the symbol should be provided--only defined if there is | |
226 | an undefined reference. HIDDEN is non-zero if the symbol should be | |
227 | hidden. */ | |
228 | ||
195e7dc6 | 229 | extern void |
e5756efb ILT |
230 | script_set_symbol(void* closure, const char*, size_t, Expression_ptr, |
231 | int provide, int hidden); | |
232 | ||
494e05f4 ILT |
233 | /* Called by the bison parser to add an assertion. */ |
234 | ||
235 | extern void | |
236 | script_add_assertion(void* closure, Expression_ptr, const char* message, | |
237 | size_t messagelen); | |
238 | ||
239 | /* Called by the bison parser to start a SECTIONS clause. */ | |
240 | ||
241 | extern void | |
242 | script_start_sections(void* closure); | |
243 | ||
244 | /* Called by the bison parser to finish a SECTIONS clause. */ | |
245 | ||
246 | extern void | |
247 | script_finish_sections(void* closure); | |
248 | ||
249 | /* Called by the bison parser to start handling input section | |
250 | specifications for an output section. */ | |
251 | ||
252 | extern void | |
253 | script_start_output_section(void* closure, const char* name, size_t namelen, | |
254 | const struct Parser_output_section_header*); | |
255 | ||
256 | /* Called by the bison parser when done handling input section | |
257 | specifications for an output section. */ | |
258 | ||
259 | extern void | |
260 | script_finish_output_section(void* closure, | |
261 | const struct Parser_output_section_trailer*); | |
262 | ||
263 | /* Called by the bison parser to handle a data statement (LONG, BYTE, | |
264 | etc.) in an output section. */ | |
265 | ||
266 | extern void | |
267 | script_add_data(void* closure, int data_token, Expression_ptr val); | |
268 | ||
269 | /* Called by the bison parser to set the fill value in an output | |
270 | section. */ | |
271 | ||
272 | extern void | |
273 | script_add_fill(void* closure, Expression_ptr val); | |
274 | ||
275 | /* Called by the bison parser to add an input section specification to | |
276 | an output section. The KEEP parameter is non-zero if this is | |
277 | within a KEEP clause, meaning that the garbage collector should not | |
278 | discard it. */ | |
279 | ||
280 | extern void | |
281 | script_add_input_section(void* closure, const struct Input_section_spec*, | |
282 | int keep); | |
283 | ||
284 | /* Create a new list of string and sort entries. */ | |
285 | ||
286 | extern String_sort_list_ptr | |
287 | script_new_string_sort_list(const struct Wildcard_section*); | |
288 | ||
289 | /* Add an entry to a list of string and sort entries. */ | |
290 | ||
291 | extern String_sort_list_ptr | |
292 | script_string_sort_list_add(String_sort_list_ptr, | |
293 | const struct Wildcard_section*); | |
294 | ||
295 | /* Create a new list of strings. */ | |
296 | ||
297 | extern String_list_ptr | |
298 | script_new_string_list(const char*, size_t); | |
299 | ||
300 | /* Add an element to a list of strings. */ | |
301 | ||
302 | extern String_list_ptr | |
303 | script_string_list_push_back(String_list_ptr, const char*, size_t); | |
304 | ||
305 | /* Concatenate two string lists. */ | |
306 | ||
307 | extern String_list_ptr | |
308 | script_string_list_append(String_list_ptr, String_list_ptr); | |
309 | ||
e5756efb ILT |
310 | /* Called by the bison parser for expressions. */ |
311 | ||
312 | extern Expression_ptr | |
313 | script_exp_unary_minus(Expression_ptr); | |
314 | extern Expression_ptr | |
315 | script_exp_unary_logical_not(Expression_ptr); | |
316 | extern Expression_ptr | |
317 | script_exp_unary_bitwise_not(Expression_ptr); | |
318 | extern Expression_ptr | |
319 | script_exp_binary_mult(Expression_ptr, Expression_ptr); | |
320 | extern Expression_ptr | |
321 | script_exp_binary_div(Expression_ptr, Expression_ptr); | |
322 | extern Expression_ptr | |
323 | script_exp_binary_mod(Expression_ptr, Expression_ptr); | |
324 | extern Expression_ptr | |
325 | script_exp_binary_add(Expression_ptr, Expression_ptr); | |
326 | extern Expression_ptr | |
327 | script_exp_binary_sub(Expression_ptr, Expression_ptr); | |
328 | extern Expression_ptr | |
329 | script_exp_binary_lshift(Expression_ptr, Expression_ptr); | |
330 | extern Expression_ptr | |
331 | script_exp_binary_rshift(Expression_ptr, Expression_ptr); | |
332 | extern Expression_ptr | |
333 | script_exp_binary_eq(Expression_ptr, Expression_ptr); | |
334 | extern Expression_ptr | |
335 | script_exp_binary_ne(Expression_ptr, Expression_ptr); | |
336 | extern Expression_ptr | |
337 | script_exp_binary_le(Expression_ptr, Expression_ptr); | |
338 | extern Expression_ptr | |
339 | script_exp_binary_ge(Expression_ptr, Expression_ptr); | |
340 | extern Expression_ptr | |
341 | script_exp_binary_lt(Expression_ptr, Expression_ptr); | |
342 | extern Expression_ptr | |
343 | script_exp_binary_gt(Expression_ptr, Expression_ptr); | |
344 | extern Expression_ptr | |
345 | script_exp_binary_bitwise_and(Expression_ptr, Expression_ptr); | |
346 | extern Expression_ptr | |
347 | script_exp_binary_bitwise_xor(Expression_ptr, Expression_ptr); | |
348 | extern Expression_ptr | |
349 | script_exp_binary_bitwise_or(Expression_ptr, Expression_ptr); | |
350 | extern Expression_ptr | |
351 | script_exp_binary_logical_and(Expression_ptr, Expression_ptr); | |
352 | extern Expression_ptr | |
353 | script_exp_binary_logical_or(Expression_ptr, Expression_ptr); | |
354 | extern Expression_ptr | |
355 | script_exp_trinary_cond(Expression_ptr, Expression_ptr, Expression_ptr); | |
356 | extern Expression_ptr | |
357 | script_exp_integer(uint64_t); | |
358 | extern Expression_ptr | |
359 | script_exp_string(const char*, size_t); | |
360 | extern Expression_ptr | |
361 | script_exp_function_max(Expression_ptr, Expression_ptr); | |
362 | extern Expression_ptr | |
363 | script_exp_function_min(Expression_ptr, Expression_ptr); | |
364 | extern Expression_ptr | |
365 | script_exp_function_defined(const char*, size_t); | |
366 | extern Expression_ptr | |
494e05f4 | 367 | script_exp_function_sizeof_headers(void); |
e5756efb ILT |
368 | extern Expression_ptr |
369 | script_exp_function_alignof(const char*, size_t); | |
370 | extern Expression_ptr | |
371 | script_exp_function_sizeof(const char*, size_t); | |
372 | extern Expression_ptr | |
373 | script_exp_function_addr(const char*, size_t); | |
374 | extern Expression_ptr | |
375 | script_exp_function_loadaddr(const char*, size_t); | |
376 | extern Expression_ptr | |
377 | script_exp_function_origin(const char*, size_t); | |
378 | extern Expression_ptr | |
379 | script_exp_function_length(const char*, size_t); | |
380 | extern Expression_ptr | |
381 | script_exp_function_constant(const char*, size_t); | |
382 | extern Expression_ptr | |
383 | script_exp_function_absolute(Expression_ptr); | |
384 | extern Expression_ptr | |
385 | script_exp_function_align(Expression_ptr, Expression_ptr); | |
386 | extern Expression_ptr | |
387 | script_exp_function_data_segment_align(Expression_ptr, Expression_ptr); | |
388 | extern Expression_ptr | |
389 | script_exp_function_data_segment_relro_end(Expression_ptr, Expression_ptr); | |
390 | extern Expression_ptr | |
391 | script_exp_function_data_segment_end(Expression_ptr); | |
392 | extern Expression_ptr | |
393 | script_exp_function_segment_start(const char*, size_t, Expression_ptr); | |
394 | extern Expression_ptr | |
395 | script_exp_function_assert(Expression_ptr, const char*, size_t); | |
195e7dc6 | 396 | |
09124467 ILT |
397 | extern void |
398 | script_register_vers_node(void* closure, | |
399 | const char* tag, | |
400 | int taglen, | |
401 | struct Version_tree *, | |
402 | struct Version_dependency_list *); | |
403 | ||
404 | extern struct Version_dependency_list * | |
405 | script_add_vers_depend(void* closure, | |
406 | struct Version_dependency_list *existing_dependencies, | |
407 | const char *depend_to_add, int deplen); | |
408 | ||
409 | extern struct Version_expression_list * | |
410 | script_new_vers_pattern(void* closure, | |
411 | struct Version_expression_list *, | |
10600224 ILT |
412 | const char *, int, int); |
413 | ||
414 | extern struct Version_expression_list * | |
415 | script_merge_expressions(struct Version_expression_list *a, | |
416 | struct Version_expression_list *b); | |
09124467 ILT |
417 | |
418 | extern struct Version_tree * | |
419 | script_new_vers_node(void* closure, | |
420 | struct Version_expression_list *global, | |
421 | struct Version_expression_list *local); | |
422 | ||
423 | extern void | |
424 | version_script_push_lang(void* closure, const char* lang, int langlen); | |
425 | ||
426 | extern void | |
427 | version_script_pop_lang(void* closure); | |
428 | ||
dbe717ef | 429 | #ifdef __cplusplus |
494e05f4 ILT |
430 | } // End extern "C" |
431 | #endif | |
432 | ||
433 | #ifdef __cplusplus | |
434 | } // End namespace gold. | |
dbe717ef ILT |
435 | #endif |
436 | ||
437 | #endif /* !defined(GOLD_SCRIPT_C_H) */ |