Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* ldlang.h - linker command language support |
577a0623 | 2 | Copyright 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001 |
aa8804e4 | 3 | Free Software Foundation, Inc. |
5cc18311 | 4 | |
252b5132 | 5 | This file is part of GLD, the Gnu Linker. |
5cc18311 | 6 | |
252b5132 RH |
7 | GLD is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 1, or (at your option) | |
10 | any later version. | |
5cc18311 | 11 | |
252b5132 RH |
12 | GLD is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
5cc18311 | 16 | |
252b5132 RH |
17 | You should have received a copy of the GNU General Public License |
18 | along with GLD; see the file COPYING. If not, write to the Free | |
19 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
22 | #ifndef LDLANG_H | |
23 | #define LDLANG_H | |
24 | ||
89cdebba | 25 | typedef enum { |
252b5132 RH |
26 | lang_input_file_is_l_enum, |
27 | lang_input_file_is_symbols_only_enum, | |
28 | lang_input_file_is_marker_enum, | |
29 | lang_input_file_is_fake_enum, | |
30 | lang_input_file_is_search_file_enum, | |
31 | lang_input_file_is_file_enum | |
32 | } lang_input_file_enum_type; | |
33 | ||
34 | typedef unsigned int fill_type; | |
89cdebba KH |
35 | |
36 | typedef struct statement_list { | |
252b5132 RH |
37 | union lang_statement_union *head; |
38 | union lang_statement_union **tail; | |
39 | } lang_statement_list_type; | |
40 | ||
89cdebba | 41 | typedef struct memory_region_struct { |
252b5132 RH |
42 | char *name; |
43 | struct memory_region_struct *next; | |
44 | bfd_vma origin; | |
45 | bfd_size_type length; | |
46 | bfd_vma current; | |
47 | bfd_size_type old_length; | |
48 | flagword flags; | |
49 | flagword not_flags; | |
50 | boolean had_full_message; | |
89cdebba KH |
51 | } lang_memory_region_type; |
52 | ||
53 | typedef struct lang_statement_header_struct { | |
54 | union lang_statement_union *next; | |
55 | enum statement_enum { | |
56 | lang_output_section_statement_enum, | |
57 | lang_assignment_statement_enum, | |
58 | lang_input_statement_enum, | |
59 | lang_address_statement_enum, | |
60 | lang_wild_statement_enum, | |
61 | lang_input_section_enum, | |
62 | lang_object_symbols_statement_enum, | |
63 | lang_fill_statement_enum, | |
64 | lang_data_statement_enum, | |
65 | lang_reloc_statement_enum, | |
66 | lang_target_statement_enum, | |
67 | lang_output_statement_enum, | |
68 | lang_padding_statement_enum, | |
69 | lang_group_statement_enum, | |
70 | ||
71 | lang_afile_asection_pair_statement_enum, | |
72 | lang_constructors_statement_enum | |
73 | } type; | |
252b5132 RH |
74 | } lang_statement_header_type; |
75 | ||
89cdebba | 76 | typedef struct { |
252b5132 RH |
77 | lang_statement_header_type header; |
78 | union etree_union *exp; | |
79 | } lang_assignment_statement_type; | |
80 | ||
89cdebba | 81 | typedef struct lang_target_statement_struct { |
252b5132 RH |
82 | lang_statement_header_type header; |
83 | const char *target; | |
84 | } lang_target_statement_type; | |
85 | ||
89cdebba | 86 | typedef struct lang_output_statement_struct { |
252b5132 RH |
87 | lang_statement_header_type header; |
88 | const char *name; | |
89 | } lang_output_statement_type; | |
90 | ||
91 | /* Section types specified in a linker script. */ | |
92 | ||
89cdebba | 93 | enum section_type { |
252b5132 RH |
94 | normal_section, |
95 | dsect_section, | |
96 | copy_section, | |
97 | noload_section, | |
98 | info_section, | |
99 | overlay_section | |
100 | }; | |
101 | ||
102 | /* This structure holds a list of program headers describing segments | |
103 | in which this section should be placed. */ | |
104 | ||
89cdebba | 105 | struct lang_output_section_phdr_list { |
252b5132 RH |
106 | struct lang_output_section_phdr_list *next; |
107 | const char *name; | |
108 | boolean used; | |
109 | }; | |
110 | ||
89cdebba | 111 | typedef struct lang_output_section_statement_struct { |
252b5132 RH |
112 | lang_statement_header_type header; |
113 | union etree_union *addr_tree; | |
114 | lang_statement_list_type children; | |
115 | const char *memspec; | |
116 | union lang_statement_union *next; | |
117 | const char *name; | |
118 | ||
119 | boolean processed; | |
5cc18311 | 120 | |
252b5132 RH |
121 | asection *bfd_section; |
122 | flagword flags; /* Or together of all input sections */ | |
123 | enum section_type sectype; | |
124 | struct memory_region_struct *region; | |
562d3460 | 125 | struct memory_region_struct *lma_region; |
252b5132 RH |
126 | size_t block_value; |
127 | fill_type fill; | |
128 | ||
89cdebba KH |
129 | int subsection_alignment; /* alignment of components */ |
130 | int section_alignment; /* alignment of start of section */ | |
252b5132 RH |
131 | |
132 | union etree_union *load_base; | |
133 | ||
134 | struct lang_output_section_phdr_list *phdrs; | |
135 | } lang_output_section_statement_type; | |
136 | ||
89cdebba | 137 | typedef struct { |
252b5132 RH |
138 | lang_statement_header_type header; |
139 | } lang_common_statement_type; | |
140 | ||
89cdebba | 141 | typedef struct { |
252b5132 RH |
142 | lang_statement_header_type header; |
143 | } lang_object_symbols_statement_type; | |
144 | ||
89cdebba | 145 | typedef struct { |
252b5132 RH |
146 | lang_statement_header_type header; |
147 | fill_type fill; | |
148 | int size; | |
149 | asection *output_section; | |
150 | } lang_fill_statement_type; | |
151 | ||
89cdebba | 152 | typedef struct { |
252b5132 RH |
153 | lang_statement_header_type header; |
154 | unsigned int type; | |
89cdebba | 155 | union etree_union *exp; |
252b5132 RH |
156 | bfd_vma value; |
157 | asection *output_section; | |
158 | bfd_vma output_vma; | |
159 | } lang_data_statement_type; | |
160 | ||
161 | /* Generate a reloc in the output file. */ | |
162 | ||
89cdebba | 163 | typedef struct { |
252b5132 RH |
164 | lang_statement_header_type header; |
165 | ||
166 | /* Reloc to generate. */ | |
167 | bfd_reloc_code_real_type reloc; | |
168 | ||
169 | /* Reloc howto structure. */ | |
170 | reloc_howto_type *howto; | |
171 | ||
172 | /* Section to generate reloc against. Exactly one of section and | |
173 | name must be NULL. */ | |
174 | asection *section; | |
175 | ||
176 | /* Name of symbol to generate reloc against. Exactly one of section | |
177 | and name must be NULL. */ | |
178 | const char *name; | |
179 | ||
180 | /* Expression for addend. */ | |
181 | union etree_union *addend_exp; | |
182 | ||
183 | /* Resolved addend. */ | |
184 | bfd_vma addend_value; | |
185 | ||
186 | /* Output section where reloc should be performed. */ | |
187 | asection *output_section; | |
188 | ||
189 | /* VMA within output section. */ | |
190 | bfd_vma output_vma; | |
191 | } lang_reloc_statement_type; | |
192 | ||
89cdebba | 193 | typedef struct lang_input_statement_struct { |
252b5132 RH |
194 | lang_statement_header_type header; |
195 | /* Name of this file. */ | |
196 | const char *filename; | |
197 | /* Name to use for the symbol giving address of text start */ | |
198 | /* Usually the same as filename, but for a file spec'd with -l | |
199 | this is the -l switch itself rather than the filename. */ | |
200 | const char *local_sym_name; | |
5cc18311 | 201 | |
252b5132 | 202 | bfd *the_bfd; |
5cc18311 | 203 | |
252b5132 RH |
204 | boolean closed; |
205 | file_ptr passive_position; | |
5cc18311 | 206 | |
252b5132 RH |
207 | /* Symbol table of the file. */ |
208 | asymbol **asymbols; | |
209 | unsigned int symbol_count; | |
5cc18311 | 210 | |
252b5132 RH |
211 | /* Point to the next file - whatever it is, wanders up and down |
212 | archives */ | |
5cc18311 | 213 | |
89cdebba | 214 | union lang_statement_union *next; |
252b5132 | 215 | /* Point to the next file, but skips archive contents */ |
89cdebba | 216 | union lang_statement_union *next_real_file; |
5cc18311 | 217 | |
252b5132 | 218 | boolean is_archive; |
5cc18311 | 219 | |
252b5132 RH |
220 | /* 1 means search a set of directories for this file. */ |
221 | boolean search_dirs_flag; | |
5cc18311 | 222 | |
252b5132 RH |
223 | /* 1 means this is base file of incremental load. |
224 | Do not load this file's text or data. | |
5cc18311 KH |
225 | Also default text_start to after this file's bss. */ |
226 | ||
252b5132 RH |
227 | boolean just_syms_flag; |
228 | ||
229 | /* Whether to search for this entry as a dynamic archive. */ | |
230 | boolean dynamic; | |
231 | ||
232 | /* Whether to include the entire contents of an archive. */ | |
233 | boolean whole_archive; | |
234 | ||
235 | boolean loaded; | |
5cc18311 | 236 | |
89cdebba KH |
237 | #if 0 |
238 | unsigned int globals_in_this_file; | |
239 | #endif | |
252b5132 RH |
240 | const char *target; |
241 | boolean real; | |
242 | } lang_input_statement_type; | |
243 | ||
89cdebba | 244 | typedef struct { |
252b5132 RH |
245 | lang_statement_header_type header; |
246 | asection *section; | |
247 | lang_input_statement_type *ifile; | |
252b5132 | 248 | |
5cc18311 | 249 | } lang_input_section_type; |
252b5132 | 250 | |
89cdebba | 251 | typedef struct { |
252b5132 RH |
252 | lang_statement_header_type header; |
253 | asection *section; | |
254 | union lang_statement_union *file; | |
255 | } lang_afile_asection_pair_statement_type; | |
256 | ||
89cdebba | 257 | typedef struct lang_wild_statement_struct { |
252b5132 RH |
258 | lang_statement_header_type header; |
259 | const char *section_name; | |
260 | boolean sections_sorted; | |
261 | const char *filename; | |
262 | boolean filenames_sorted; | |
263 | boolean keep_sections; | |
18625d54 | 264 | struct name_list *exclude_filename_list; |
252b5132 RH |
265 | lang_statement_list_type children; |
266 | } lang_wild_statement_type; | |
267 | ||
89cdebba | 268 | typedef struct lang_address_statement_struct { |
252b5132 | 269 | lang_statement_header_type header; |
89cdebba KH |
270 | const char *section_name; |
271 | union etree_union *address; | |
252b5132 RH |
272 | } lang_address_statement_type; |
273 | ||
89cdebba | 274 | typedef struct { |
252b5132 RH |
275 | lang_statement_header_type header; |
276 | bfd_vma output_offset; | |
277 | size_t size; | |
278 | asection *output_section; | |
279 | fill_type fill; | |
280 | } lang_padding_statement_type; | |
281 | ||
282 | /* A group statement collects a set of libraries together. The | |
283 | libraries are searched multiple times, until no new undefined | |
284 | symbols are found. The effect is to search a group of libraries as | |
285 | though they were a single library. */ | |
286 | ||
89cdebba | 287 | typedef struct { |
252b5132 RH |
288 | lang_statement_header_type header; |
289 | lang_statement_list_type children; | |
290 | } lang_group_statement_type; | |
291 | ||
89cdebba | 292 | typedef union lang_statement_union { |
252b5132 RH |
293 | lang_statement_header_type header; |
294 | union lang_statement_union *next; | |
295 | lang_wild_statement_type wild_statement; | |
296 | lang_data_statement_type data_statement; | |
297 | lang_reloc_statement_type reloc_statement; | |
298 | lang_address_statement_type address_statement; | |
299 | lang_output_section_statement_type output_section_statement; | |
300 | lang_afile_asection_pair_statement_type afile_asection_pair_statement; | |
301 | lang_assignment_statement_type assignment_statement; | |
302 | lang_input_statement_type input_statement; | |
303 | lang_target_statement_type target_statement; | |
304 | lang_output_statement_type output_statement; | |
305 | lang_input_section_type input_section; | |
306 | lang_common_statement_type common_statement; | |
307 | lang_object_symbols_statement_type object_symbols_statement; | |
308 | lang_fill_statement_type fill_statement; | |
309 | lang_padding_statement_type padding_statement; | |
310 | lang_group_statement_type group_statement; | |
311 | } lang_statement_union_type; | |
312 | ||
313 | /* This structure holds information about a program header, from the | |
314 | PHDRS command in the linker script. */ | |
315 | ||
89cdebba | 316 | struct lang_phdr { |
252b5132 RH |
317 | struct lang_phdr *next; |
318 | const char *name; | |
319 | unsigned long type; | |
320 | boolean filehdr; | |
321 | boolean phdrs; | |
322 | etree_type *at; | |
323 | etree_type *flags; | |
324 | }; | |
325 | ||
326 | /* This structure is used to hold a list of sections which may not | |
327 | cross reference each other. */ | |
328 | ||
89cdebba | 329 | struct lang_nocrossref { |
252b5132 RH |
330 | struct lang_nocrossref *next; |
331 | const char *name; | |
332 | }; | |
333 | ||
334 | /* The list of nocrossref lists. */ | |
335 | ||
89cdebba | 336 | struct lang_nocrossrefs { |
252b5132 RH |
337 | struct lang_nocrossrefs *next; |
338 | struct lang_nocrossref *list; | |
339 | }; | |
340 | ||
341 | extern struct lang_nocrossrefs *nocrossref_list; | |
342 | ||
577a0623 AM |
343 | /* This structure is used to hold a list of input section names which |
344 | will not match an output section in the linker script. */ | |
345 | ||
346 | struct unique_sections { | |
347 | struct unique_sections *next; | |
348 | const char *name; | |
349 | }; | |
350 | ||
351 | extern struct unique_sections *unique_section_list; | |
352 | ||
252b5132 | 353 | extern lang_output_section_statement_type *abs_output_section; |
aea4bd9d | 354 | extern lang_statement_list_type lang_output_section_statement; |
252b5132 RH |
355 | extern boolean lang_has_input_file; |
356 | extern etree_type *base; | |
357 | extern lang_statement_list_type *stat_ptr; | |
358 | extern boolean delete_output_file_on_failure; | |
359 | ||
360 | extern const char *entry_symbol; | |
361 | extern boolean entry_from_cmdline; | |
b71e2778 | 362 | extern lang_statement_list_type file_chain; |
252b5132 RH |
363 | |
364 | extern void lang_init PARAMS ((void)); | |
365 | extern struct memory_region_struct *lang_memory_region_lookup | |
366 | PARAMS ((const char *const)); | |
367 | extern struct memory_region_struct *lang_memory_region_default | |
368 | PARAMS ((asection *)); | |
369 | extern void lang_map PARAMS ((void)); | |
aa8804e4 ILT |
370 | extern void lang_set_flags PARAMS ((lang_memory_region_type *, const char *, |
371 | int)); | |
252b5132 | 372 | extern void lang_add_output PARAMS ((const char *, int from_script)); |
aea4bd9d | 373 | extern lang_output_section_statement_type *lang_enter_output_section_statement |
252b5132 RH |
374 | PARAMS ((const char *output_section_statement_name, |
375 | etree_type * address_exp, | |
376 | enum section_type sectype, | |
377 | bfd_vma block_value, | |
378 | etree_type *align, | |
379 | etree_type *subalign, | |
380 | etree_type *)); | |
381 | extern void lang_final PARAMS ((void)); | |
382 | extern void lang_process PARAMS ((void)); | |
383 | extern void lang_section_start PARAMS ((const char *, union etree_union *)); | |
384 | extern void lang_add_entry PARAMS ((const char *, boolean)); | |
385 | extern void lang_add_target PARAMS ((const char *)); | |
386 | extern void lang_add_wild | |
18625d54 | 387 | PARAMS ((const char *, boolean, const char *, boolean, boolean, name_list *)); |
252b5132 RH |
388 | extern void lang_add_map PARAMS ((const char *)); |
389 | extern void lang_add_fill PARAMS ((int)); | |
390 | extern lang_assignment_statement_type * lang_add_assignment PARAMS ((union etree_union *)); | |
391 | extern void lang_add_attribute PARAMS ((enum statement_enum)); | |
392 | extern void lang_startup PARAMS ((const char *)); | |
393 | extern void lang_float PARAMS ((enum bfd_boolean)); | |
394 | extern void lang_leave_output_section_statement | |
562d3460 TW |
395 | PARAMS ((bfd_vma, const char *, struct lang_output_section_phdr_list *, |
396 | const char *)); | |
252b5132 RH |
397 | extern void lang_abs_symbol_at_end_of PARAMS ((const char *, const char *)); |
398 | extern void lang_abs_symbol_at_beginning_of PARAMS ((const char *, | |
399 | const char *)); | |
400 | extern void lang_statement_append PARAMS ((struct statement_list *, | |
401 | union lang_statement_union *, | |
402 | union lang_statement_union **)); | |
403 | extern void lang_for_each_input_file | |
404 | PARAMS ((void (*dothis) (lang_input_statement_type *))); | |
405 | extern void lang_for_each_file | |
406 | PARAMS ((void (*dothis) (lang_input_statement_type *))); | |
407 | extern bfd_vma lang_do_assignments | |
408 | PARAMS ((lang_statement_union_type * s, | |
409 | lang_output_section_statement_type *output_section_statement, | |
410 | fill_type fill, | |
411 | bfd_vma dot)); | |
412 | ||
413 | #define LANG_FOR_EACH_INPUT_STATEMENT(statement) \ | |
252b5132 RH |
414 | lang_input_statement_type *statement; \ |
415 | for (statement = (lang_input_statement_type *)file_chain.head;\ | |
416 | statement != (lang_input_statement_type *)NULL; \ | |
417 | statement = (lang_input_statement_type *)statement->next)\ | |
5cc18311 | 418 | |
252b5132 RH |
419 | extern void lang_process PARAMS ((void)); |
420 | extern void ldlang_add_file PARAMS ((lang_input_statement_type *)); | |
421 | extern lang_output_section_statement_type *lang_output_section_find | |
422 | PARAMS ((const char * const)); | |
423 | extern lang_input_statement_type *lang_add_input_file | |
424 | PARAMS ((const char *name, lang_input_file_enum_type file_type, | |
425 | const char *target)); | |
426 | extern void lang_add_keepsyms_file PARAMS ((const char *filename)); | |
427 | extern lang_output_section_statement_type * | |
428 | lang_output_section_statement_lookup PARAMS ((const char * const name)); | |
429 | extern void ldlang_add_undef PARAMS ((const char *const name)); | |
430 | extern void lang_add_output_format PARAMS ((const char *, const char *, | |
431 | const char *, int from_script)); | |
432 | extern void lang_list_init PARAMS ((lang_statement_list_type*)); | |
433 | extern void lang_add_data PARAMS ((int type, union etree_union *)); | |
434 | extern void lang_add_reloc | |
435 | PARAMS ((bfd_reloc_code_real_type reloc, reloc_howto_type *howto, | |
436 | asection *section, const char *name, union etree_union *addend)); | |
437 | extern void lang_for_each_statement | |
438 | PARAMS ((void (*func) (lang_statement_union_type *))); | |
439 | extern PTR stat_alloc PARAMS ((size_t size)); | |
440 | extern void dprint_statement PARAMS ((lang_statement_union_type *, int)); | |
441 | extern bfd_vma lang_size_sections | |
442 | PARAMS ((lang_statement_union_type *s, | |
443 | lang_output_section_statement_type *output_section_statement, | |
444 | lang_statement_union_type **prev, fill_type fill, | |
445 | bfd_vma dot, boolean relax)); | |
446 | extern void lang_enter_group PARAMS ((void)); | |
447 | extern void lang_leave_group PARAMS ((void)); | |
448 | extern void wild_doit | |
449 | PARAMS ((lang_statement_list_type *ptr, asection *section, | |
450 | lang_output_section_statement_type *output, | |
451 | lang_input_statement_type *file)); | |
452 | extern void lang_new_phdr | |
453 | PARAMS ((const char *, etree_type *, boolean, boolean, etree_type *, | |
454 | etree_type *)); | |
455 | extern void lang_add_nocrossref PARAMS ((struct lang_nocrossref *)); | |
456 | extern void lang_enter_overlay PARAMS ((etree_type *, etree_type *, int)); | |
457 | extern void lang_enter_overlay_section PARAMS ((const char *)); | |
458 | extern void lang_leave_overlay_section | |
459 | PARAMS ((bfd_vma, struct lang_output_section_phdr_list *)); | |
460 | extern void lang_leave_overlay | |
562d3460 TW |
461 | PARAMS ((bfd_vma, const char *, struct lang_output_section_phdr_list *, |
462 | const char *)); | |
252b5132 RH |
463 | |
464 | extern struct bfd_elf_version_tree *lang_elf_version_info; | |
465 | ||
466 | extern struct bfd_elf_version_expr *lang_new_vers_regex | |
467 | PARAMS ((struct bfd_elf_version_expr *, const char *, const char *)); | |
468 | extern struct bfd_elf_version_tree *lang_new_vers_node | |
469 | PARAMS ((struct bfd_elf_version_expr *, struct bfd_elf_version_expr *)); | |
470 | extern struct bfd_elf_version_deps *lang_add_vers_depend | |
471 | PARAMS ((struct bfd_elf_version_deps *, const char *)); | |
472 | extern void lang_register_vers_node | |
473 | PARAMS ((const char *, struct bfd_elf_version_tree *, | |
474 | struct bfd_elf_version_deps *)); | |
577a0623 AM |
475 | boolean unique_section_p PARAMS ((const char *)); |
476 | extern void lang_add_unique PARAMS ((const char *)); | |
252b5132 RH |
477 | |
478 | #endif |