1 /* ldlang.h - linker command language support
2 Copyright 1991, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
4 This file is part of GLD, the Gnu Linker.
6 GLD is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GLD is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GLD; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
25 lang_input_file_is_l_enum,
26 lang_input_file_is_symbols_only_enum,
27 lang_input_file_is_marker_enum,
28 lang_input_file_is_fake_enum,
29 lang_input_file_is_search_file_enum,
30 lang_input_file_is_file_enum
31 } lang_input_file_enum_type;
33 typedef unsigned int fill_type;
34 typedef struct statement_list
36 union lang_statement_union *head;
37 union lang_statement_union **tail;
38 } lang_statement_list_type;
41 typedef struct memory_region_struct
44 struct memory_region_struct *next;
48 bfd_size_type old_length;
50 boolean had_full_message;
51 } lang_memory_region_type ;
53 typedef struct lang_statement_header_struct
55 union lang_statement_union *next;
58 lang_output_section_statement_enum,
59 lang_assignment_statement_enum,
60 lang_input_statement_enum,
61 lang_address_statement_enum,
62 lang_wild_statement_enum,
63 lang_input_section_enum,
64 lang_object_symbols_statement_enum,
65 lang_fill_statement_enum,
66 lang_data_statement_enum,
67 lang_reloc_statement_enum,
68 lang_target_statement_enum,
69 lang_output_statement_enum,
70 lang_padding_statement_enum,
71 lang_group_statement_enum,
73 lang_afile_asection_pair_statement_enum,
74 lang_constructors_statement_enum
76 } lang_statement_header_type;
81 lang_statement_header_type header;
82 union etree_union *exp;
83 } lang_assignment_statement_type;
86 typedef struct lang_target_statement_struct
88 lang_statement_header_type header;
90 } lang_target_statement_type;
93 typedef struct lang_output_statement_struct
95 lang_statement_header_type header;
97 } lang_output_statement_type;
100 typedef struct lang_output_section_statement_struct
102 lang_statement_header_type header;
103 union etree_union *addr_tree;
104 lang_statement_list_type children;
106 union lang_statement_union *next;
111 asection *bfd_section;
112 int flags; /* Or together of all input sections */
113 int loadable; /* set from NOLOAD flag in script */
114 struct memory_region_struct *region;
118 int subsection_alignment; /* alignment of components */
119 int section_alignment; /* alignment of start of section */
121 union etree_union *load_base;
122 } lang_output_section_statement_type;
127 lang_statement_header_type header;
128 } lang_common_statement_type;
132 lang_statement_header_type header;
133 } lang_object_symbols_statement_type;
137 lang_statement_header_type header;
140 asection *output_section;
141 } lang_fill_statement_type;
145 lang_statement_header_type header;
147 union etree_union *exp;
149 asection *output_section;
151 } lang_data_statement_type;
153 /* Generate a reloc in the output file. */
157 lang_statement_header_type header;
159 /* Reloc to generate. */
160 bfd_reloc_code_real_type reloc;
162 /* Reloc howto structure. */
163 reloc_howto_type *howto;
165 /* Section to generate reloc against. Exactly one of section and
166 name must be NULL. */
169 /* Name of symbol to generate reloc against. Exactly one of section
170 and name must be NULL. */
173 /* Expression for addend. */
174 union etree_union *addend_exp;
176 /* Resolved addend. */
177 bfd_vma addend_value;
179 /* Output section where reloc should be performed. */
180 asection *output_section;
182 /* VMA within output section. */
184 } lang_reloc_statement_type;
186 typedef struct lang_input_statement_struct
188 lang_statement_header_type header;
189 /* Name of this file. */
190 const char *filename;
191 /* Name to use for the symbol giving address of text start */
192 /* Usually the same as filename, but for a file spec'd with -l
193 this is the -l switch itself rather than the filename. */
194 const char *local_sym_name;
199 file_ptr passive_position;
201 /* Symbol table of the file. */
203 unsigned int symbol_count;
205 /* Point to the next file - whatever it is, wanders up and down
208 union lang_statement_union *next;
209 /* Point to the next file, but skips archive contents */
210 union lang_statement_union *next_real_file;
214 /* 1 means search a set of directories for this file. */
215 boolean search_dirs_flag;
217 /* 1 means this is base file of incremental load.
218 Do not load this file's text or data.
219 Also default text_start to after this file's bss. */
221 boolean just_syms_flag;
226 /* unsigned int globals_in_this_file;*/
229 asection *common_section;
230 asection *common_output_section;
232 } lang_input_statement_type;
236 lang_statement_header_type header;
238 lang_input_statement_type *ifile;
240 } lang_input_section_type;
245 lang_statement_header_type header;
247 union lang_statement_union *file;
248 } lang_afile_asection_pair_statement_type;
250 typedef struct lang_wild_statement_struct
252 lang_statement_header_type header;
253 const char *section_name;
254 const char *filename;
255 lang_statement_list_type children;
256 } lang_wild_statement_type;
258 typedef struct lang_address_statement_struct
260 lang_statement_header_type header;
261 const char *section_name;
262 union etree_union *address;
263 } lang_address_statement_type;
267 lang_statement_header_type header;
268 bfd_vma output_offset;
270 asection *output_section;
272 } lang_padding_statement_type;
274 /* A group statement collects a set of libraries together. The
275 libraries are searched multiple times, until no new undefined
276 symbols are found. The effect is to search a group of libraries as
277 though they were a single library. */
281 lang_statement_header_type header;
282 lang_statement_list_type children;
283 } lang_group_statement_type;
285 typedef union lang_statement_union
287 lang_statement_header_type header;
288 union lang_statement_union *next;
289 lang_wild_statement_type wild_statement;
290 lang_data_statement_type data_statement;
291 lang_reloc_statement_type reloc_statement;
292 lang_address_statement_type address_statement;
293 lang_output_section_statement_type output_section_statement;
294 lang_afile_asection_pair_statement_type afile_asection_pair_statement;
295 lang_assignment_statement_type assignment_statement;
296 lang_input_statement_type input_statement;
297 lang_target_statement_type target_statement;
298 lang_output_statement_type output_statement;
299 lang_input_section_type input_section;
300 lang_common_statement_type common_statement;
301 lang_object_symbols_statement_type object_symbols_statement;
302 lang_fill_statement_type fill_statement;
303 lang_padding_statement_type padding_statement;
304 lang_group_statement_type group_statement;
305 } lang_statement_union_type;
307 extern lang_output_section_statement_type *abs_output_section;
308 extern boolean lang_has_input_file;
309 extern etree_type *base;
310 extern lang_statement_list_type *stat_ptr;
311 extern boolean delete_output_file_on_failure;
313 extern void lang_init PARAMS ((void));
314 extern struct memory_region_struct *lang_memory_region_lookup
315 PARAMS ((const char *const));
316 extern void lang_map PARAMS ((void));
317 extern void lang_set_flags PARAMS ((int *, const char *));
318 extern void lang_add_output PARAMS ((const char *, int from_script));
319 extern void lang_enter_output_section_statement
320 PARAMS ((const char *output_section_statement_name,
321 etree_type * address_exp,
325 etree_type *subalign,
327 extern void lang_final PARAMS ((void));
328 extern void lang_process PARAMS ((void));
329 extern void lang_section_start PARAMS ((const char *, union etree_union *));
330 extern void lang_add_entry PARAMS ((const char *, int));
331 extern void lang_add_target PARAMS ((const char *));
332 extern void lang_add_wild PARAMS ((const char *const , const char *const));
333 extern void lang_add_map PARAMS ((const char *));
334 extern void lang_add_fill PARAMS ((int));
335 extern void lang_add_assignment PARAMS ((union etree_union *));
336 extern void lang_add_attribute PARAMS ((enum statement_enum));
337 extern void lang_startup PARAMS ((const char *));
338 extern void lang_float PARAMS ((enum bfd_boolean));
339 extern void lang_leave_output_section_statement PARAMS ((bfd_vma,
341 extern void lang_abs_symbol_at_end_of PARAMS ((const char *, const char *));
342 extern void lang_abs_symbol_at_beginning_of PARAMS ((const char *,
344 extern void lang_statement_append PARAMS ((struct statement_list *,
345 union lang_statement_union *,
346 union lang_statement_union **));
347 extern void lang_for_each_input_file
348 PARAMS ((void (*dothis) (lang_input_statement_type *)));
349 extern void lang_for_each_file
350 PARAMS ((void (*dothis) (lang_input_statement_type *)));
351 extern bfd_vma lang_do_assignments
352 PARAMS ((lang_statement_union_type * s,
353 lang_output_section_statement_type *output_section_statement,
357 #define LANG_FOR_EACH_INPUT_STATEMENT(statement) \
358 extern lang_statement_list_type file_chain; \
359 lang_input_statement_type *statement; \
360 for (statement = (lang_input_statement_type *)file_chain.head;\
361 statement != (lang_input_statement_type *)NULL; \
362 statement = (lang_input_statement_type *)statement->next)\
364 extern void lang_process PARAMS ((void));
365 extern void ldlang_add_file PARAMS ((lang_input_statement_type *));
366 extern lang_output_section_statement_type *lang_output_section_find
367 PARAMS ((const char * const));
368 extern lang_input_statement_type *lang_add_input_file
369 PARAMS ((const char *name, lang_input_file_enum_type file_type,
370 const char *target));
371 extern void lang_add_keepsyms_file PARAMS ((const char *filename));
372 extern lang_output_section_statement_type *
373 lang_output_section_statement_lookup PARAMS ((const char * const name));
374 extern void ldlang_add_undef PARAMS ((const char *const name));
375 extern void lang_add_output_format PARAMS ((const char *, const char *,
376 const char *, int from_script));
377 extern void lang_list_init PARAMS ((lang_statement_list_type*));
378 extern void lang_add_data PARAMS ((int type, union etree_union *));
379 extern void lang_add_reloc
380 PARAMS ((bfd_reloc_code_real_type reloc, reloc_howto_type *howto,
381 asection *section, const char *name, union etree_union *addend));
382 extern void lang_for_each_statement
383 PARAMS ((void (*func) (lang_statement_union_type *)));
384 extern PTR stat_alloc PARAMS ((size_t size));
385 extern bfd_vma lang_size_sections
386 PARAMS ((lang_statement_union_type *s,
387 lang_output_section_statement_type *output_section_statement,
388 lang_statement_union_type **prev, fill_type fill,
389 bfd_vma dot, boolean relax));
390 extern void lang_enter_group PARAMS ((void));
391 extern void lang_leave_group PARAMS ((void));
392 extern void wild_doit
393 PARAMS ((lang_statement_list_type *ptr, asection *section,
394 lang_output_section_statement_type *output,
395 lang_input_statement_type *file));