1 /* Linker command language support.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
4 Free Software Foundation, Inc.
6 This file is part of GLD, the Gnu Linker.
8 GLD 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 2, or (at your option)
13 GLD 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 GLD; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 #include "libiberty.h"
26 #include "safe-ctype.h"
44 static lang_statement_union_type *new_statement
45 PARAMS ((enum statement_enum, size_t, lang_statement_list_type *));
48 static struct obstack stat_obstack;
50 #define obstack_chunk_alloc xmalloc
51 #define obstack_chunk_free free
52 static const char *startup_file;
53 static lang_statement_list_type input_file_chain;
54 static boolean placed_commons = false;
55 static lang_output_section_statement_type *default_common_section;
56 static boolean map_option_f;
57 static bfd_vma print_dot;
58 static lang_input_statement_type *first_file;
59 static const char *current_target;
60 static const char *output_target;
61 static lang_statement_list_type statement_list;
62 static struct lang_phdr *lang_phdr_list;
64 static void lang_for_each_statement_worker
65 PARAMS ((void (*) (lang_statement_union_type *),
66 lang_statement_union_type *));
67 static lang_input_statement_type *new_afile
68 PARAMS ((const char *, lang_input_file_enum_type, const char *, boolean));
69 static lang_memory_region_type *lang_memory_default PARAMS ((asection *));
70 static void lang_map_flags PARAMS ((flagword));
71 static void init_os PARAMS ((lang_output_section_statement_type *));
72 static void exp_init_os PARAMS ((etree_type *));
73 static void section_already_linked PARAMS ((bfd *, asection *, PTR));
74 static struct bfd_hash_entry *already_linked_newfunc
75 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
76 static void already_linked_table_init PARAMS ((void));
77 static void already_linked_table_free PARAMS ((void));
78 static boolean wildcardp PARAMS ((const char *));
79 static lang_statement_union_type *wild_sort
80 PARAMS ((lang_wild_statement_type *, struct wildcard_list *,
81 lang_input_statement_type *, asection *));
82 static void output_section_callback
83 PARAMS ((lang_wild_statement_type *, struct wildcard_list *, asection *,
84 lang_input_statement_type *, PTR));
85 static lang_input_statement_type *lookup_name PARAMS ((const char *));
86 static boolean load_symbols
87 PARAMS ((lang_input_statement_type *, lang_statement_list_type *));
89 PARAMS ((lang_wild_statement_type *,
90 const char *, lang_output_section_statement_type *));
91 static bfd *open_output PARAMS ((const char *));
92 static void ldlang_open_output PARAMS ((lang_statement_union_type *));
93 static void open_input_bfds PARAMS ((lang_statement_union_type *, boolean));
94 static void lang_reasonable_defaults PARAMS ((void));
95 static void insert_undefined PARAMS ((const char *));
96 static void lang_place_undefineds PARAMS ((void));
97 static void map_input_to_output_sections
98 PARAMS ((lang_statement_union_type *, const char *,
99 lang_output_section_statement_type *));
100 static void print_output_section_statement
101 PARAMS ((lang_output_section_statement_type *));
102 static void print_assignment
103 PARAMS ((lang_assignment_statement_type *,
104 lang_output_section_statement_type *));
105 static void print_input_statement PARAMS ((lang_input_statement_type *));
106 static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR));
107 static void print_input_section PARAMS ((lang_input_section_type *));
108 static void print_fill_statement PARAMS ((lang_fill_statement_type *));
109 static void print_data_statement PARAMS ((lang_data_statement_type *));
110 static void print_address_statement PARAMS ((lang_address_statement_type *));
111 static void print_reloc_statement PARAMS ((lang_reloc_statement_type *));
112 static void print_padding_statement PARAMS ((lang_padding_statement_type *));
113 static void print_wild_statement
114 PARAMS ((lang_wild_statement_type *, lang_output_section_statement_type *));
115 static void print_group
116 PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *));
117 static void print_statement
118 PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *));
119 static void print_statement_list
120 PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *));
121 static void print_statements PARAMS ((void));
122 static void insert_pad
123 PARAMS ((lang_statement_union_type **, fill_type *,
124 unsigned int, asection *, bfd_vma));
125 static bfd_vma size_input_section
126 PARAMS ((lang_statement_union_type **, lang_output_section_statement_type *,
127 fill_type *, bfd_vma));
128 static void lang_finish PARAMS ((void));
129 static void ignore_bfd_errors PARAMS ((const char *, ...));
130 static void lang_check PARAMS ((void));
131 static void lang_common PARAMS ((void));
132 static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
133 static void lang_place_orphans PARAMS ((void));
134 static int topower PARAMS ((int));
135 static void lang_set_startof PARAMS ((void));
136 static void gc_section_callback
137 PARAMS ((lang_wild_statement_type *, struct wildcard_list *, asection *,
138 lang_input_statement_type *, PTR));
139 static void lang_record_phdrs PARAMS ((void));
140 static void lang_gc_wild PARAMS ((lang_wild_statement_type *));
141 static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *));
142 static void lang_gc_sections PARAMS ((void));
143 static int lang_vers_match_lang_c
144 PARAMS ((struct bfd_elf_version_expr *, const char *));
145 static int lang_vers_match_lang_cplusplus
146 PARAMS ((struct bfd_elf_version_expr *, const char *));
147 static int lang_vers_match_lang_java
148 PARAMS ((struct bfd_elf_version_expr *, const char *));
149 static void lang_do_version_exports_section PARAMS ((void));
150 static void lang_check_section_addresses PARAMS ((void));
151 static void os_region_check
152 PARAMS ((lang_output_section_statement_type *,
153 struct memory_region_struct *, etree_type *, bfd_vma));
154 static bfd_vma lang_size_sections_1
155 PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *,
156 lang_statement_union_type **, fill_type *, bfd_vma, boolean *));
158 typedef void (*callback_t) PARAMS ((lang_wild_statement_type *,
159 struct wildcard_list *,
161 lang_input_statement_type *,
163 static void walk_wild
164 PARAMS ((lang_wild_statement_type *, callback_t, PTR));
165 static void walk_wild_section
166 PARAMS ((lang_wild_statement_type *, lang_input_statement_type *,
168 static void walk_wild_file
169 PARAMS ((lang_wild_statement_type *, lang_input_statement_type *,
172 static int get_target PARAMS ((const bfd_target *, PTR));
173 static void stricpy PARAMS ((char *, char *));
174 static void strcut PARAMS ((char *, char *));
175 static int name_compare PARAMS ((char *, char *));
176 static int closest_target_match PARAMS ((const bfd_target *, PTR));
177 static char * get_first_input_target PARAMS ((void));
180 lang_output_section_statement_type *abs_output_section;
181 lang_statement_list_type lang_output_section_statement;
182 lang_statement_list_type *stat_ptr = &statement_list;
183 lang_statement_list_type file_chain = { NULL, NULL };
184 const char *entry_symbol = NULL;
185 const char *entry_section = ".text";
186 boolean entry_from_cmdline;
187 boolean lang_has_input_file = false;
188 boolean had_output_filename = false;
189 boolean lang_float_flag = false;
190 boolean delete_output_file_on_failure = false;
191 struct lang_nocrossrefs *nocrossref_list;
192 struct unique_sections *unique_section_list;
194 etree_type *base; /* Relocation base - or null */
196 #if defined (__STDC__) || defined (ALMOST_STDC)
197 #define cat(a,b) a##b
199 #define cat(a,b) a/**/b
202 /* Don't beautify the line below with "innocent" whitespace, it breaks
203 the K&R C preprocessor! */
204 #define new_stat(x, y) \
205 (cat (x,_type)*) new_statement (cat (x,_enum), sizeof (cat (x,_type)), y)
207 #define outside_section_address(q) \
208 ((q)->output_offset + (q)->output_section->vma)
210 #define outside_symbol_address(q) \
211 ((q)->value + outside_section_address (q->section))
213 #define SECTION_NAME_MAP_LENGTH (16)
219 return obstack_alloc (&stat_obstack, size);
223 unique_section_p (secnam)
226 struct unique_sections *unam;
228 for (unam = unique_section_list; unam; unam = unam->next)
229 if (wildcardp (unam->name)
230 ? fnmatch (unam->name, secnam, 0) == 0
231 : strcmp (unam->name, secnam) == 0)
239 /* Generic traversal routines for finding matching sections. */
242 walk_wild_section (ptr, file, callback, data)
243 lang_wild_statement_type *ptr;
244 lang_input_statement_type *file;
250 if (file->just_syms_flag)
253 for (s = file->the_bfd->sections; s != NULL; s = s->next)
255 struct wildcard_list *sec;
257 sec = ptr->section_list;
259 (*callback) (ptr, sec, s, file, data);
263 boolean skip = false;
264 struct name_list *list_tmp;
266 /* Don't process sections from files which were
268 for (list_tmp = sec->spec.exclude_name_list;
270 list_tmp = list_tmp->next)
272 if (wildcardp (list_tmp->name))
273 skip = fnmatch (list_tmp->name, file->filename, 0) == 0;
275 skip = strcmp (list_tmp->name, file->filename) == 0;
277 /* If this file is part of an archive, and the archive is
278 excluded, exclude this file. */
279 if (! skip && file->the_bfd != NULL
280 && file->the_bfd->my_archive != NULL
281 && file->the_bfd->my_archive->filename != NULL)
283 if (wildcardp (list_tmp->name))
284 skip = fnmatch (list_tmp->name,
285 file->the_bfd->my_archive->filename,
288 skip = strcmp (list_tmp->name,
289 file->the_bfd->my_archive->filename) == 0;
296 if (!skip && sec->spec.name != NULL)
298 const char *sname = bfd_get_section_name (file->the_bfd, s);
300 if (wildcardp (sec->spec.name))
301 skip = fnmatch (sec->spec.name, sname, 0) != 0;
303 skip = strcmp (sec->spec.name, sname) != 0;
307 (*callback) (ptr, sec, s, file, data);
314 /* Handle a wild statement for a single file F. */
317 walk_wild_file (s, f, callback, data)
318 lang_wild_statement_type *s;
319 lang_input_statement_type *f;
323 if (f->the_bfd == NULL
324 || ! bfd_check_format (f->the_bfd, bfd_archive))
325 walk_wild_section (s, f, callback, data);
330 /* This is an archive file. We must map each member of the
331 archive separately. */
332 member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
333 while (member != NULL)
335 /* When lookup_name is called, it will call the add_symbols
336 entry point for the archive. For each element of the
337 archive which is included, BFD will call ldlang_add_file,
338 which will set the usrdata field of the member to the
339 lang_input_statement. */
340 if (member->usrdata != NULL)
342 walk_wild_section (s,
343 (lang_input_statement_type *) member->usrdata,
347 member = bfd_openr_next_archived_file (f->the_bfd, member);
353 walk_wild (s, callback, data)
354 lang_wild_statement_type *s;
358 const char *file_spec = s->filename;
360 if (file_spec == NULL)
362 /* Perform the iteration over all files in the list. */
363 LANG_FOR_EACH_INPUT_STATEMENT (f)
365 walk_wild_file (s, f, callback, data);
368 else if (wildcardp (file_spec))
370 LANG_FOR_EACH_INPUT_STATEMENT (f)
372 if (fnmatch (file_spec, f->filename, FNM_FILE_NAME) == 0)
373 walk_wild_file (s, f, callback, data);
378 lang_input_statement_type *f;
380 /* Perform the iteration over a single file. */
381 f = lookup_name (file_spec);
383 walk_wild_file (s, f, callback, data);
387 /* lang_for_each_statement walks the parse tree and calls the provided
388 function for each node. */
391 lang_for_each_statement_worker (func, s)
392 void (*func) PARAMS ((lang_statement_union_type *));
393 lang_statement_union_type *s;
395 for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
399 switch (s->header.type)
401 case lang_constructors_statement_enum:
402 lang_for_each_statement_worker (func, constructor_list.head);
404 case lang_output_section_statement_enum:
405 lang_for_each_statement_worker
407 s->output_section_statement.children.head);
409 case lang_wild_statement_enum:
410 lang_for_each_statement_worker
412 s->wild_statement.children.head);
414 case lang_group_statement_enum:
415 lang_for_each_statement_worker (func,
416 s->group_statement.children.head);
418 case lang_data_statement_enum:
419 case lang_reloc_statement_enum:
420 case lang_object_symbols_statement_enum:
421 case lang_output_statement_enum:
422 case lang_target_statement_enum:
423 case lang_input_section_enum:
424 case lang_input_statement_enum:
425 case lang_assignment_statement_enum:
426 case lang_padding_statement_enum:
427 case lang_address_statement_enum:
428 case lang_fill_statement_enum:
438 lang_for_each_statement (func)
439 void (*func) PARAMS ((lang_statement_union_type *));
441 lang_for_each_statement_worker (func, statement_list.head);
444 /*----------------------------------------------------------------------*/
447 lang_list_init (list)
448 lang_statement_list_type *list;
450 list->head = (lang_statement_union_type *) NULL;
451 list->tail = &list->head;
454 /* Build a new statement node for the parse tree. */
456 static lang_statement_union_type *
457 new_statement (type, size, list)
458 enum statement_enum type;
460 lang_statement_list_type *list;
462 lang_statement_union_type *new = (lang_statement_union_type *)
465 new->header.type = type;
466 new->header.next = (lang_statement_union_type *) NULL;
467 lang_statement_append (list, new, &new->header.next);
471 /* Build a new input file node for the language. There are several
472 ways in which we treat an input file, eg, we only look at symbols,
473 or prefix it with a -l etc.
475 We can be supplied with requests for input files more than once;
476 they may, for example be split over serveral lines like foo.o(.text)
477 foo.o(.data) etc, so when asked for a file we check that we haven't
478 got it already so we don't duplicate the bfd. */
480 static lang_input_statement_type *
481 new_afile (name, file_type, target, add_to_list)
483 lang_input_file_enum_type file_type;
487 lang_input_statement_type *p;
490 p = new_stat (lang_input_statement, stat_ptr);
493 p = ((lang_input_statement_type *)
494 stat_alloc (sizeof (lang_input_statement_type)));
495 p->header.next = NULL;
498 lang_has_input_file = true;
502 case lang_input_file_is_symbols_only_enum:
504 p->is_archive = false;
506 p->local_sym_name = name;
507 p->just_syms_flag = true;
508 p->search_dirs_flag = false;
510 case lang_input_file_is_fake_enum:
512 p->is_archive = false;
514 p->local_sym_name = name;
515 p->just_syms_flag = false;
516 p->search_dirs_flag = false;
518 case lang_input_file_is_l_enum:
519 p->is_archive = true;
522 p->local_sym_name = concat ("-l", name, (const char *) NULL);
523 p->just_syms_flag = false;
524 p->search_dirs_flag = true;
526 case lang_input_file_is_marker_enum:
528 p->is_archive = false;
530 p->local_sym_name = name;
531 p->just_syms_flag = false;
532 p->search_dirs_flag = true;
534 case lang_input_file_is_search_file_enum:
536 p->is_archive = false;
538 p->local_sym_name = name;
539 p->just_syms_flag = false;
540 p->search_dirs_flag = true;
542 case lang_input_file_is_file_enum:
544 p->is_archive = false;
546 p->local_sym_name = name;
547 p->just_syms_flag = false;
548 p->search_dirs_flag = false;
553 p->the_bfd = (bfd *) NULL;
554 p->asymbols = (asymbol **) NULL;
555 p->next_real_file = (lang_statement_union_type *) NULL;
556 p->next = (lang_statement_union_type *) NULL;
558 p->dynamic = config.dynamic_link;
559 p->whole_archive = whole_archive;
561 lang_statement_append (&input_file_chain,
562 (lang_statement_union_type *) p,
567 lang_input_statement_type *
568 lang_add_input_file (name, file_type, target)
570 lang_input_file_enum_type file_type;
573 lang_has_input_file = true;
574 return new_afile (name, file_type, target, true);
577 /* Build enough state so that the parser can build its tree. */
582 obstack_begin (&stat_obstack, 1000);
584 stat_ptr = &statement_list;
586 lang_list_init (stat_ptr);
588 lang_list_init (&input_file_chain);
589 lang_list_init (&lang_output_section_statement);
590 lang_list_init (&file_chain);
591 first_file = lang_add_input_file ((char *) NULL,
592 lang_input_file_is_marker_enum,
595 lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
597 abs_output_section->bfd_section = bfd_abs_section_ptr;
601 /*----------------------------------------------------------------------
602 A region is an area of memory declared with the
603 MEMORY { name:org=exp, len=exp ... }
606 We maintain a list of all the regions here.
608 If no regions are specified in the script, then the default is used
609 which is created when looked up to be the entire data space. */
611 static lang_memory_region_type *lang_memory_region_list;
612 static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list;
614 lang_memory_region_type *
615 lang_memory_region_lookup (name)
616 const char *const name;
618 lang_memory_region_type *p;
620 for (p = lang_memory_region_list;
621 p != (lang_memory_region_type *) NULL;
624 if (strcmp (p->name, name) == 0)
631 /* This code used to always use the first region in the list as the
632 default region. I changed it to instead use a region
633 encompassing all of memory as the default region. This permits
634 NOLOAD sections to work reasonably without requiring a region.
635 People should specify what region they mean, if they really want
637 if (strcmp (name, "*default*") == 0)
639 if (lang_memory_region_list != (lang_memory_region_type *) NULL)
641 return lang_memory_region_list;
647 lang_memory_region_type *new =
648 (lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type));
650 new->name = xstrdup (name);
651 new->next = (lang_memory_region_type *) NULL;
653 *lang_memory_region_list_tail = new;
654 lang_memory_region_list_tail = &new->next;
658 new->length = ~(bfd_size_type) 0;
660 new->had_full_message = false;
666 static lang_memory_region_type *
667 lang_memory_default (section)
670 lang_memory_region_type *p;
672 flagword sec_flags = section->flags;
674 /* Override SEC_DATA to mean a writable section. */
675 if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC)
676 sec_flags |= SEC_DATA;
678 for (p = lang_memory_region_list;
679 p != (lang_memory_region_type *) NULL;
682 if ((p->flags & sec_flags) != 0
683 && (p->not_flags & sec_flags) == 0)
688 return lang_memory_region_lookup ("*default*");
691 lang_output_section_statement_type *
692 lang_output_section_find (name)
693 const char *const name;
695 lang_statement_union_type *u;
696 lang_output_section_statement_type *lookup;
698 for (u = lang_output_section_statement.head;
699 u != (lang_statement_union_type *) NULL;
702 lookup = &u->output_section_statement;
703 if (strcmp (name, lookup->name) == 0)
708 return (lang_output_section_statement_type *) NULL;
711 lang_output_section_statement_type *
712 lang_output_section_statement_lookup (name)
713 const char *const name;
715 lang_output_section_statement_type *lookup;
717 lookup = lang_output_section_find (name);
718 if (lookup == (lang_output_section_statement_type *) NULL)
721 lookup = (lang_output_section_statement_type *)
722 new_stat (lang_output_section_statement, stat_ptr);
723 lookup->region = (lang_memory_region_type *) NULL;
724 lookup->lma_region = (lang_memory_region_type *) NULL;
725 lookup->fill = (fill_type *) 0;
726 lookup->block_value = 1;
729 lookup->next = (lang_statement_union_type *) NULL;
730 lookup->bfd_section = (asection *) NULL;
731 lookup->processed = false;
732 lookup->sectype = normal_section;
733 lookup->addr_tree = (etree_type *) NULL;
734 lang_list_init (&lookup->children);
736 lookup->memspec = (const char *) NULL;
738 lookup->subsection_alignment = -1;
739 lookup->section_alignment = -1;
740 lookup->load_base = (union etree_union *) NULL;
741 lookup->phdrs = NULL;
743 lang_statement_append (&lang_output_section_statement,
744 (lang_statement_union_type *) lookup,
751 lang_map_flags (flag)
754 if (flag & SEC_ALLOC)
760 if (flag & SEC_READONLY)
773 lang_memory_region_type *m;
775 minfo (_("\nMemory Configuration\n\n"));
776 fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
777 _("Name"), _("Origin"), _("Length"), _("Attributes"));
779 for (m = lang_memory_region_list;
780 m != (lang_memory_region_type *) NULL;
786 fprintf (config.map_file, "%-16s ", m->name);
788 sprintf_vma (buf, m->origin);
789 minfo ("0x%s ", buf);
797 minfo ("0x%V", m->length);
798 if (m->flags || m->not_flags)
806 lang_map_flags (m->flags);
812 lang_map_flags (m->not_flags);
819 fprintf (config.map_file, _("\nLinker script and memory map\n\n"));
824 /* Initialize an output section. */
828 lang_output_section_statement_type *s;
830 section_userdata_type *new;
832 if (s->bfd_section != NULL)
835 if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
836 einfo (_("%P%F: Illegal use of `%s' section\n"), DISCARD_SECTION_NAME);
838 new = ((section_userdata_type *)
839 stat_alloc (sizeof (section_userdata_type)));
841 s->bfd_section = bfd_get_section_by_name (output_bfd, s->name);
842 if (s->bfd_section == (asection *) NULL)
843 s->bfd_section = bfd_make_section (output_bfd, s->name);
844 if (s->bfd_section == (asection *) NULL)
846 einfo (_("%P%F: output format %s cannot represent section called %s\n"),
847 output_bfd->xvec->name, s->name);
849 s->bfd_section->output_section = s->bfd_section;
851 /* We initialize an output sections output offset to minus its own
852 vma to allow us to output a section through itself. */
853 s->bfd_section->output_offset = 0;
854 get_userdata (s->bfd_section) = (PTR) new;
856 /* If there is a base address, make sure that any sections it might
857 mention are initialized. */
858 if (s->addr_tree != NULL)
859 exp_init_os (s->addr_tree);
862 /* Make sure that all output sections mentioned in an expression are
869 switch (exp->type.node_class)
872 exp_init_os (exp->assign.src);
876 exp_init_os (exp->binary.lhs);
877 exp_init_os (exp->binary.rhs);
881 exp_init_os (exp->trinary.cond);
882 exp_init_os (exp->trinary.lhs);
883 exp_init_os (exp->trinary.rhs);
887 exp_init_os (exp->unary.child);
891 switch (exp->type.node_code)
897 lang_output_section_statement_type *os;
899 os = lang_output_section_find (exp->name.name);
900 if (os != NULL && os->bfd_section == NULL)
911 /* Sections marked with the SEC_LINK_ONCE flag should only be linked
912 once into the output. This routine checks each section, and
913 arrange to discard it if a section of the same name has already
914 been linked. If the section has COMDAT information, then it uses
915 that to decide whether the section should be included. This code
916 assumes that all relevant sections have the SEC_LINK_ONCE flag set;
917 that is, it does not depend solely upon the section name.
918 section_already_linked is called via bfd_map_over_sections. */
920 /* This is the shape of the elements inside the already_linked hash
921 table. It maps a name onto a list of already_linked elements with
922 the same name. It's possible to get more than one element in a
923 list if the COMDAT sections have different names. */
925 struct already_linked_hash_entry
927 struct bfd_hash_entry root;
928 struct already_linked *entry;
931 struct already_linked
933 struct already_linked *next;
937 /* The hash table. */
939 static struct bfd_hash_table already_linked_table;
942 section_already_linked (abfd, sec, data)
947 lang_input_statement_type *entry = (lang_input_statement_type *) data;
950 struct already_linked *l;
951 struct already_linked_hash_entry *already_linked_list;
953 /* If we are only reading symbols from this object, then we want to
954 discard all sections. */
955 if (entry->just_syms_flag)
957 sec->output_section = bfd_abs_section_ptr;
958 sec->output_offset = sec->vma;
962 flags = bfd_get_section_flags (abfd, sec);
964 if ((flags & SEC_LINK_ONCE) == 0)
967 /* FIXME: When doing a relocatable link, we may have trouble
968 copying relocations in other sections that refer to local symbols
969 in the section being discarded. Those relocations will have to
970 be converted somehow; as of this writing I'm not sure that any of
971 the backends handle that correctly.
973 It is tempting to instead not discard link once sections when
974 doing a relocatable link (technically, they should be discarded
975 whenever we are building constructors). However, that fails,
976 because the linker winds up combining all the link once sections
977 into a single large link once section, which defeats the purpose
978 of having link once sections in the first place.
980 Also, not merging link once sections in a relocatable link
981 causes trouble for MIPS ELF, which relies in link once semantics
982 to handle the .reginfo section correctly. */
984 name = bfd_get_section_name (abfd, sec);
986 already_linked_list =
987 ((struct already_linked_hash_entry *)
988 bfd_hash_lookup (&already_linked_table, name, true, false));
990 for (l = already_linked_list->entry; l != NULL; l = l->next)
992 if (sec->comdat == NULL
993 || l->sec->comdat == NULL
994 || strcmp (sec->comdat->name, l->sec->comdat->name) == 0)
996 /* The section has already been linked. See if we should
998 switch (flags & SEC_LINK_DUPLICATES)
1003 case SEC_LINK_DUPLICATES_DISCARD:
1006 case SEC_LINK_DUPLICATES_ONE_ONLY:
1007 if (sec->comdat == NULL)
1008 einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"),
1011 einfo (_("%P: %B: warning: ignoring duplicate `%s' section symbol `%s'\n"),
1012 abfd, name, sec->comdat->name);
1015 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
1016 /* FIXME: We should really dig out the contents of both
1017 sections and memcmp them. The COFF/PE spec says that
1018 the Microsoft linker does not implement this
1019 correctly, so I'm not going to bother doing it
1022 case SEC_LINK_DUPLICATES_SAME_SIZE:
1023 if (bfd_section_size (abfd, sec)
1024 != bfd_section_size (l->sec->owner, l->sec))
1025 einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"),
1030 /* Set the output_section field so that lang_add_section
1031 does not create a lang_input_section structure for this
1033 sec->output_section = bfd_abs_section_ptr;
1039 /* This is the first section with this name. Record it. Allocate
1040 the memory from the same obstack as the hash table is kept in. */
1042 l = ((struct already_linked *)
1043 bfd_hash_allocate (&already_linked_table, sizeof *l));
1046 l->next = already_linked_list->entry;
1047 already_linked_list->entry = l;
1050 /* Support routines for the hash table used by section_already_linked,
1051 initialize the table, fill in an entry and remove the table. */
1053 static struct bfd_hash_entry *
1054 already_linked_newfunc (entry, table, string)
1055 struct bfd_hash_entry *entry ATTRIBUTE_UNUSED;
1056 struct bfd_hash_table *table;
1057 const char *string ATTRIBUTE_UNUSED;
1059 struct already_linked_hash_entry *ret =
1060 bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry));
1064 return (struct bfd_hash_entry *) ret;
1068 already_linked_table_init ()
1070 if (! bfd_hash_table_init_n (&already_linked_table,
1071 already_linked_newfunc,
1073 einfo (_("%P%F: Failed to create hash table\n"));
1077 already_linked_table_free ()
1079 bfd_hash_table_free (&already_linked_table);
1082 /* The wild routines.
1084 These expand statements like *(.text) and foo.o to a list of
1085 explicit actions, like foo.o(.text), bar.o(.text) and
1086 foo.o(.text, .data). */
1088 /* Return true if the PATTERN argument is a wildcard pattern.
1089 Although backslashes are treated specially if a pattern contains
1090 wildcards, we do not consider the mere presence of a backslash to
1091 be enough to cause the pattern to be treated as a wildcard.
1092 That lets us handle DOS filenames more naturally. */
1096 const char *pattern;
1100 for (s = pattern; *s != '\0'; ++s)
1108 /* Add SECTION to the output section OUTPUT. Do this by creating a
1109 lang_input_section statement which is placed at PTR. FILE is the
1110 input file which holds SECTION. */
1113 lang_add_section (ptr, section, output, file)
1114 lang_statement_list_type *ptr;
1116 lang_output_section_statement_type *output;
1117 lang_input_statement_type *file;
1122 flags = bfd_get_section_flags (section->owner, section);
1126 /* If we are doing a final link, discard sections marked with
1128 if (! link_info.relocateable
1129 && (flags & SEC_EXCLUDE) != 0)
1132 /* Discard input sections which are assigned to a section named
1133 DISCARD_SECTION_NAME. */
1134 if (strcmp (output->name, DISCARD_SECTION_NAME) == 0)
1137 /* Discard debugging sections if we are stripping debugging
1139 if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
1140 && (flags & SEC_DEBUGGING) != 0)
1145 if (section->output_section == NULL)
1147 /* This prevents future calls from assigning this section. */
1148 section->output_section = bfd_abs_section_ptr;
1153 if (section->output_section == NULL)
1156 lang_input_section_type *new;
1159 if (output->bfd_section == NULL)
1162 first = ! output->bfd_section->linker_has_input;
1163 output->bfd_section->linker_has_input = 1;
1165 /* Add a section reference to the list. */
1166 new = new_stat (lang_input_section, ptr);
1168 new->section = section;
1170 section->output_section = output->bfd_section;
1172 flags = section->flags;
1174 /* We don't copy the SEC_NEVER_LOAD flag from an input section
1175 to an output section, because we want to be able to include a
1176 SEC_NEVER_LOAD section in the middle of an otherwise loaded
1177 section (I don't know why we want to do this, but we do).
1178 build_link_order in ldwrite.c handles this case by turning
1179 the embedded SEC_NEVER_LOAD section into a fill. */
1181 flags &= ~ SEC_NEVER_LOAD;
1183 /* If final link, don't copy the SEC_LINK_ONCE flags, they've
1184 already been processed. One reason to do this is that on pe
1185 format targets, .text$foo sections go into .text and it's odd
1186 to see .text with SEC_LINK_ONCE set. */
1188 if (! link_info.relocateable)
1189 flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
1191 /* If this is not the first input section, and the SEC_READONLY
1192 flag is not currently set, then don't set it just because the
1193 input section has it set. */
1195 if (! first && (section->output_section->flags & SEC_READONLY) == 0)
1196 flags &= ~ SEC_READONLY;
1198 /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */
1200 && ((section->output_section->flags & (SEC_MERGE | SEC_STRINGS))
1201 != (flags & (SEC_MERGE | SEC_STRINGS))
1202 || ((flags & SEC_MERGE)
1203 && section->output_section->entsize != section->entsize)))
1205 section->output_section->flags &= ~ (SEC_MERGE | SEC_STRINGS);
1206 flags &= ~ (SEC_MERGE | SEC_STRINGS);
1209 section->output_section->flags |= flags;
1211 if (flags & SEC_MERGE)
1212 section->output_section->entsize = section->entsize;
1214 /* If SEC_READONLY is not set in the input section, then clear
1215 it from the output section. */
1216 if ((section->flags & SEC_READONLY) == 0)
1217 section->output_section->flags &= ~SEC_READONLY;
1219 switch (output->sectype)
1221 case normal_section:
1226 case overlay_section:
1227 output->bfd_section->flags &= ~SEC_ALLOC;
1229 case noload_section:
1230 output->bfd_section->flags &= ~SEC_LOAD;
1231 output->bfd_section->flags |= SEC_NEVER_LOAD;
1235 /* Copy over SEC_SMALL_DATA. */
1236 if (section->flags & SEC_SMALL_DATA)
1237 section->output_section->flags |= SEC_SMALL_DATA;
1239 if (section->alignment_power > output->bfd_section->alignment_power)
1240 output->bfd_section->alignment_power = section->alignment_power;
1242 /* If supplied an aligment, then force it. */
1243 if (output->section_alignment != -1)
1244 output->bfd_section->alignment_power = output->section_alignment;
1246 if (section->flags & SEC_BLOCK)
1248 section->output_section->flags |= SEC_BLOCK;
1249 /* FIXME: This value should really be obtained from the bfd... */
1250 output->block_value = 128;
1255 /* Handle wildcard sorting. This returns the lang_input_section which
1256 should follow the one we are going to create for SECTION and FILE,
1257 based on the sorting requirements of WILD. It returns NULL if the
1258 new section should just go at the end of the current list. */
1260 static lang_statement_union_type *
1261 wild_sort (wild, sec, file, section)
1262 lang_wild_statement_type *wild;
1263 struct wildcard_list *sec;
1264 lang_input_statement_type *file;
1267 const char *section_name;
1268 lang_statement_union_type *l;
1270 if (!wild->filenames_sorted && (sec == NULL || !sec->spec.sorted))
1273 section_name = bfd_get_section_name (file->the_bfd, section);
1274 for (l = wild->children.head; l != NULL; l = l->header.next)
1276 lang_input_section_type *ls;
1278 if (l->header.type != lang_input_section_enum)
1280 ls = &l->input_section;
1282 /* Sorting by filename takes precedence over sorting by section
1285 if (wild->filenames_sorted)
1287 const char *fn, *ln;
1291 /* The PE support for the .idata section as generated by
1292 dlltool assumes that files will be sorted by the name of
1293 the archive and then the name of the file within the
1296 if (file->the_bfd != NULL
1297 && bfd_my_archive (file->the_bfd) != NULL)
1299 fn = bfd_get_filename (bfd_my_archive (file->the_bfd));
1304 fn = file->filename;
1308 if (ls->ifile->the_bfd != NULL
1309 && bfd_my_archive (ls->ifile->the_bfd) != NULL)
1311 ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd));
1316 ln = ls->ifile->filename;
1320 i = strcmp (fn, ln);
1329 fn = file->filename;
1331 ln = ls->ifile->filename;
1333 i = strcmp (fn, ln);
1341 /* Here either the files are not sorted by name, or we are
1342 looking at the sections for this file. */
1344 if (sec != NULL && sec->spec.sorted)
1346 if (strcmp (section_name,
1347 bfd_get_section_name (ls->ifile->the_bfd,
1357 /* Expand a wild statement for a particular FILE. SECTION may be
1358 NULL, in which case it is a wild card. */
1361 output_section_callback (ptr, sec, section, file, output)
1362 lang_wild_statement_type *ptr;
1363 struct wildcard_list *sec;
1365 lang_input_statement_type *file;
1368 lang_statement_union_type *before;
1370 /* Exclude sections that match UNIQUE_SECTION_LIST. */
1371 if (unique_section_p (bfd_get_section_name (file->the_bfd, section)))
1374 /* If the wild pattern was marked KEEP, the member sections
1375 should be as well. */
1376 if (ptr->keep_sections)
1377 section->flags |= SEC_KEEP;
1379 before = wild_sort (ptr, sec, file, section);
1381 /* Here BEFORE points to the lang_input_section which
1382 should follow the one we are about to add. If BEFORE
1383 is NULL, then the section should just go at the end
1384 of the current list. */
1387 lang_add_section (&ptr->children, section,
1388 (lang_output_section_statement_type *) output,
1392 lang_statement_list_type list;
1393 lang_statement_union_type **pp;
1395 lang_list_init (&list);
1396 lang_add_section (&list, section,
1397 (lang_output_section_statement_type *) output,
1400 /* If we are discarding the section, LIST.HEAD will
1402 if (list.head != NULL)
1404 ASSERT (list.head->header.next == NULL);
1406 for (pp = &ptr->children.head;
1408 pp = &(*pp)->header.next)
1409 ASSERT (*pp != NULL);
1411 list.head->header.next = *pp;
1417 /* This is passed a file name which must have been seen already and
1418 added to the statement tree. We will see if it has been opened
1419 already and had its symbols read. If not then we'll read it. */
1421 static lang_input_statement_type *
1425 lang_input_statement_type *search;
1427 for (search = (lang_input_statement_type *) input_file_chain.head;
1428 search != (lang_input_statement_type *) NULL;
1429 search = (lang_input_statement_type *) search->next_real_file)
1431 if (search->filename == (char *) NULL && name == (char *) NULL)
1433 if (search->filename != (char *) NULL
1434 && name != (char *) NULL
1435 && strcmp (search->filename, name) == 0)
1439 if (search == (lang_input_statement_type *) NULL)
1440 search = new_afile (name, lang_input_file_is_file_enum, default_target,
1443 /* If we have already added this file, or this file is not real
1444 (FIXME: can that ever actually happen?) or the name is NULL
1445 (FIXME: can that ever actually happen?) don't add this file. */
1448 || search->filename == (const char *) NULL)
1451 if (! load_symbols (search, (lang_statement_list_type *) NULL))
1457 /* Get the symbols for an input file. */
1460 load_symbols (entry, place)
1461 lang_input_statement_type *entry;
1462 lang_statement_list_type *place;
1469 ldfile_open_file (entry);
1471 if (! bfd_check_format (entry->the_bfd, bfd_archive)
1472 && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching))
1475 lang_statement_list_type *hold;
1476 boolean bad_load = true;
1478 err = bfd_get_error ();
1480 /* See if the emulation has some special knowledge. */
1481 if (ldemul_unrecognized_file (entry))
1484 if (err == bfd_error_file_ambiguously_recognized)
1488 einfo (_("%B: file not recognized: %E\n"), entry->the_bfd);
1489 einfo (_("%B: matching formats:"), entry->the_bfd);
1490 for (p = matching; *p != NULL; p++)
1494 else if (err != bfd_error_file_not_recognized
1496 einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd);
1500 bfd_close (entry->the_bfd);
1501 entry->the_bfd = NULL;
1503 /* Try to interpret the file as a linker script. */
1504 ldfile_open_command_file (entry->filename);
1509 ldfile_assumed_script = true;
1510 parser_input = input_script;
1512 ldfile_assumed_script = false;
1519 if (ldemul_recognized_file (entry))
1522 /* We don't call ldlang_add_file for an archive. Instead, the
1523 add_symbols entry point will call ldlang_add_file, via the
1524 add_archive_element callback, for each element of the archive
1526 switch (bfd_get_format (entry->the_bfd))
1532 ldlang_add_file (entry);
1533 if (trace_files || trace_file_tries)
1534 info_msg ("%I\n", entry);
1538 if (entry->whole_archive)
1540 bfd * member = NULL;
1541 boolean loaded = true;
1545 member = bfd_openr_next_archived_file (entry->the_bfd, member);
1550 if (! bfd_check_format (member, bfd_object))
1552 einfo (_("%F%B: member %B in archive is not an object\n"),
1553 entry->the_bfd, member);
1557 if (! ((*link_info.callbacks->add_archive_element)
1558 (&link_info, member, "--whole-archive")))
1561 if (! bfd_link_add_symbols (member, &link_info))
1563 einfo (_("%F%B: could not read symbols: %E\n"), member);
1568 entry->loaded = loaded;
1574 if (bfd_link_add_symbols (entry->the_bfd, &link_info))
1575 entry->loaded = true;
1577 einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd);
1579 return entry->loaded;
1582 /* Handle a wild statement. S->FILENAME or S->SECTION_LIST or both
1583 may be NULL, indicating that it is a wildcard. Separate
1584 lang_input_section statements are created for each part of the
1585 expansion; they are added after the wild statement S. OUTPUT is
1586 the output section. */
1589 wild (s, target, output)
1590 lang_wild_statement_type *s;
1591 const char *target ATTRIBUTE_UNUSED;
1592 lang_output_section_statement_type *output;
1594 struct wildcard_list *sec;
1596 walk_wild (s, output_section_callback, (PTR) output);
1598 for (sec = s->section_list; sec != NULL; sec = sec->next)
1600 if (default_common_section != NULL)
1602 if (sec->spec.name != NULL && strcmp (sec->spec.name, "COMMON") == 0)
1604 /* Remember the section that common is going to in case we
1605 later get something which doesn't know where to put it. */
1606 default_common_section = output;
1611 /* Return true iff target is the sought target. */
1614 get_target (target, data)
1615 const bfd_target *target;
1618 const char *sought = (const char *) data;
1620 return strcmp (target->name, sought) == 0;
1623 /* Like strcpy() but convert to lower case as well. */
1632 while ((c = *src++) != 0)
1633 *dest++ = TOLOWER (c);
1638 /* Remove the first occurance of needle (if any) in haystack
1642 strcut (haystack, needle)
1646 haystack = strstr (haystack, needle);
1652 for (src = haystack + strlen (needle); *src;)
1653 *haystack++ = *src++;
1659 /* Compare two target format name strings.
1660 Return a value indicating how "similar" they are. */
1663 name_compare (first, second)
1671 copy1 = xmalloc (strlen (first) + 1);
1672 copy2 = xmalloc (strlen (second) + 1);
1674 /* Convert the names to lower case. */
1675 stricpy (copy1, first);
1676 stricpy (copy2, second);
1678 /* Remove and endian strings from the name. */
1679 strcut (copy1, "big");
1680 strcut (copy1, "little");
1681 strcut (copy2, "big");
1682 strcut (copy2, "little");
1684 /* Return a value based on how many characters match,
1685 starting from the beginning. If both strings are
1686 the same then return 10 * their length. */
1687 for (result = 0; copy1[result] == copy2[result]; result++)
1688 if (copy1[result] == 0)
1700 /* Set by closest_target_match() below. */
1701 static const bfd_target *winner;
1703 /* Scan all the valid bfd targets looking for one that has the endianness
1704 requirement that was specified on the command line, and is the nearest
1705 match to the original output target. */
1708 closest_target_match (target, data)
1709 const bfd_target *target;
1712 const bfd_target *original = (const bfd_target *) data;
1714 if (command_line.endian == ENDIAN_BIG
1715 && target->byteorder != BFD_ENDIAN_BIG)
1718 if (command_line.endian == ENDIAN_LITTLE
1719 && target->byteorder != BFD_ENDIAN_LITTLE)
1722 /* Must be the same flavour. */
1723 if (target->flavour != original->flavour)
1726 /* If we have not found a potential winner yet, then record this one. */
1733 /* Oh dear, we now have two potential candidates for a successful match.
1734 Compare their names and choose the better one. */
1735 if (name_compare (target->name, original->name)
1736 > name_compare (winner->name, original->name))
1739 /* Keep on searching until wqe have checked them all. */
1743 /* Return the BFD target format of the first input file. */
1746 get_first_input_target ()
1748 char *target = NULL;
1750 LANG_FOR_EACH_INPUT_STATEMENT (s)
1752 if (s->header.type == lang_input_statement_enum
1755 ldfile_open_file (s);
1757 if (s->the_bfd != NULL
1758 && bfd_check_format (s->the_bfd, bfd_object))
1760 target = bfd_get_target (s->the_bfd);
1771 /* Open the output file. */
1779 /* Has the user told us which output format to use? */
1780 if (output_target == (char *) NULL)
1782 /* No - has the current target been set to something other than
1784 if (current_target != default_target)
1785 output_target = current_target;
1787 /* No - can we determine the format of the first input file? */
1790 output_target = get_first_input_target ();
1792 /* Failed - use the default output target. */
1793 if (output_target == NULL)
1794 output_target = default_target;
1798 /* Has the user requested a particular endianness on the command
1800 if (command_line.endian != ENDIAN_UNSET)
1802 const bfd_target *target;
1803 enum bfd_endian desired_endian;
1805 /* Get the chosen target. */
1806 target = bfd_search_for_target (get_target, (PTR) output_target);
1808 /* If the target is not supported, we cannot do anything. */
1811 if (command_line.endian == ENDIAN_BIG)
1812 desired_endian = BFD_ENDIAN_BIG;
1814 desired_endian = BFD_ENDIAN_LITTLE;
1816 /* See if the target has the wrong endianness. This should
1817 not happen if the linker script has provided big and
1818 little endian alternatives, but some scrips don't do
1820 if (target->byteorder != desired_endian)
1822 /* If it does, then see if the target provides
1823 an alternative with the correct endianness. */
1824 if (target->alternative_target != NULL
1825 && (target->alternative_target->byteorder == desired_endian))
1826 output_target = target->alternative_target->name;
1829 /* Try to find a target as similar as possible to
1830 the default target, but which has the desired
1831 endian characteristic. */
1832 (void) bfd_search_for_target (closest_target_match,
1835 /* Oh dear - we could not find any targets that
1836 satisfy our requirements. */
1838 einfo (_("%P: warning: could not find any targets that match endianness requirement\n"));
1840 output_target = winner->name;
1846 output = bfd_openw (name, output_target);
1848 if (output == (bfd *) NULL)
1850 if (bfd_get_error () == bfd_error_invalid_target)
1851 einfo (_("%P%F: target %s not found\n"), output_target);
1853 einfo (_("%P%F: cannot open output file %s: %E\n"), name);
1856 delete_output_file_on_failure = true;
1859 output->flags |= D_PAGED;
1862 if (! bfd_set_format (output, bfd_object))
1863 einfo (_("%P%F:%s: can not make object file: %E\n"), name);
1864 if (! bfd_set_arch_mach (output,
1865 ldfile_output_architecture,
1866 ldfile_output_machine))
1867 einfo (_("%P%F:%s: can not set architecture: %E\n"), name);
1869 link_info.hash = bfd_link_hash_table_create (output);
1870 if (link_info.hash == (struct bfd_link_hash_table *) NULL)
1871 einfo (_("%P%F: can not create link hash table: %E\n"));
1873 bfd_set_gp_size (output, g_switch_value);
1878 ldlang_open_output (statement)
1879 lang_statement_union_type *statement;
1881 switch (statement->header.type)
1883 case lang_output_statement_enum:
1884 ASSERT (output_bfd == (bfd *) NULL);
1885 output_bfd = open_output (statement->output_statement.name);
1886 ldemul_set_output_arch ();
1887 if (config.magic_demand_paged && !link_info.relocateable)
1888 output_bfd->flags |= D_PAGED;
1890 output_bfd->flags &= ~D_PAGED;
1891 if (config.text_read_only)
1892 output_bfd->flags |= WP_TEXT;
1894 output_bfd->flags &= ~WP_TEXT;
1895 if (link_info.traditional_format)
1896 output_bfd->flags |= BFD_TRADITIONAL_FORMAT;
1898 output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT;
1901 case lang_target_statement_enum:
1902 current_target = statement->target_statement.target;
1909 /* Open all the input files. */
1912 open_input_bfds (s, force)
1913 lang_statement_union_type *s;
1916 for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
1918 switch (s->header.type)
1920 case lang_constructors_statement_enum:
1921 open_input_bfds (constructor_list.head, force);
1923 case lang_output_section_statement_enum:
1924 open_input_bfds (s->output_section_statement.children.head, force);
1926 case lang_wild_statement_enum:
1927 /* Maybe we should load the file's symbols. */
1928 if (s->wild_statement.filename
1929 && ! wildcardp (s->wild_statement.filename))
1930 (void) lookup_name (s->wild_statement.filename);
1931 open_input_bfds (s->wild_statement.children.head, force);
1933 case lang_group_statement_enum:
1935 struct bfd_link_hash_entry *undefs;
1937 /* We must continually search the entries in the group
1938 until no new symbols are added to the list of undefined
1943 undefs = link_info.hash->undefs_tail;
1944 open_input_bfds (s->group_statement.children.head, true);
1946 while (undefs != link_info.hash->undefs_tail);
1949 case lang_target_statement_enum:
1950 current_target = s->target_statement.target;
1952 case lang_input_statement_enum:
1953 if (s->input_statement.real)
1955 lang_statement_list_type add;
1957 s->input_statement.target = current_target;
1959 /* If we are being called from within a group, and this
1960 is an archive which has already been searched, then
1961 force it to be researched unless the whole archive
1962 has been loaded already. */
1964 && !s->input_statement.whole_archive
1965 && s->input_statement.loaded
1966 && bfd_check_format (s->input_statement.the_bfd,
1968 s->input_statement.loaded = false;
1970 lang_list_init (&add);
1972 if (! load_symbols (&s->input_statement, &add))
1973 config.make_executable = false;
1975 if (add.head != NULL)
1977 *add.tail = s->header.next;
1978 s->header.next = add.head;
1988 /* If there are [COMMONS] statements, put a wild one into the bss
1992 lang_reasonable_defaults ()
1995 lang_output_section_statement_lookup (".text");
1996 lang_output_section_statement_lookup (".data");
1998 default_common_section = lang_output_section_statement_lookup (".bss");
2000 if (placed_commons == false)
2002 lang_wild_statement_type *new =
2003 new_stat (lang_wild_statement,
2004 &default_common_section->children);
2006 new->section_name = "COMMON";
2007 new->filename = (char *) NULL;
2008 lang_list_init (&new->children);
2013 /* Add the supplied name to the symbol table as an undefined reference.
2014 This is a two step process as the symbol table doesn't even exist at
2015 the time the ld command line is processed. First we put the name
2016 on a list, then, once the output file has been opened, transfer the
2017 name to the symbol table. */
2019 typedef struct ldlang_undef_chain_list
2021 struct ldlang_undef_chain_list *next;
2023 } ldlang_undef_chain_list_type;
2025 static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head;
2028 ldlang_add_undef (name)
2029 const char *const name;
2031 ldlang_undef_chain_list_type *new =
2032 ((ldlang_undef_chain_list_type *)
2033 stat_alloc (sizeof (ldlang_undef_chain_list_type)));
2035 new->next = ldlang_undef_chain_list_head;
2036 ldlang_undef_chain_list_head = new;
2038 new->name = xstrdup (name);
2040 if (output_bfd != NULL)
2041 insert_undefined (new->name);
2044 /* Insert NAME as undefined in the symbol table. */
2047 insert_undefined (name)
2050 struct bfd_link_hash_entry *h;
2052 h = bfd_link_hash_lookup (link_info.hash, name, true, false, true);
2053 if (h == (struct bfd_link_hash_entry *) NULL)
2054 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
2055 if (h->type == bfd_link_hash_new)
2057 h->type = bfd_link_hash_undefined;
2058 h->u.undef.abfd = NULL;
2059 bfd_link_add_undef (link_info.hash, h);
2063 /* Run through the list of undefineds created above and place them
2064 into the linker hash table as undefined symbols belonging to the
2068 lang_place_undefineds ()
2070 ldlang_undef_chain_list_type *ptr;
2072 for (ptr = ldlang_undef_chain_list_head;
2073 ptr != (ldlang_undef_chain_list_type *) NULL;
2076 insert_undefined (ptr->name);
2080 /* Open input files and attatch to output sections. */
2083 map_input_to_output_sections (s, target, output_section_statement)
2084 lang_statement_union_type *s;
2086 lang_output_section_statement_type *output_section_statement;
2088 for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
2090 switch (s->header.type)
2092 case lang_wild_statement_enum:
2093 wild (&s->wild_statement, target, output_section_statement);
2095 case lang_constructors_statement_enum:
2096 map_input_to_output_sections (constructor_list.head,
2098 output_section_statement);
2100 case lang_output_section_statement_enum:
2101 map_input_to_output_sections (s->output_section_statement.children.head,
2103 &s->output_section_statement);
2105 case lang_output_statement_enum:
2107 case lang_target_statement_enum:
2108 target = s->target_statement.target;
2110 case lang_group_statement_enum:
2111 map_input_to_output_sections (s->group_statement.children.head,
2113 output_section_statement);
2115 case lang_fill_statement_enum:
2116 case lang_input_section_enum:
2117 case lang_object_symbols_statement_enum:
2118 case lang_data_statement_enum:
2119 case lang_reloc_statement_enum:
2120 case lang_padding_statement_enum:
2121 case lang_input_statement_enum:
2122 if (output_section_statement != NULL
2123 && output_section_statement->bfd_section == NULL)
2124 init_os (output_section_statement);
2126 case lang_assignment_statement_enum:
2127 if (output_section_statement != NULL
2128 && output_section_statement->bfd_section == NULL)
2129 init_os (output_section_statement);
2131 /* Make sure that any sections mentioned in the assignment
2133 exp_init_os (s->assignment_statement.exp);
2135 case lang_afile_asection_pair_statement_enum:
2138 case lang_address_statement_enum:
2139 /* Mark the specified section with the supplied address. */
2141 lang_output_section_statement_type *os =
2142 lang_output_section_statement_lookup
2143 (s->address_statement.section_name);
2145 if (os->bfd_section == NULL)
2147 os->addr_tree = s->address_statement.address;
2155 print_output_section_statement (output_section_statement)
2156 lang_output_section_statement_type *output_section_statement;
2158 asection *section = output_section_statement->bfd_section;
2161 if (output_section_statement != abs_output_section)
2163 minfo ("\n%s", output_section_statement->name);
2165 if (section != NULL)
2167 print_dot = section->vma;
2169 len = strlen (output_section_statement->name);
2170 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2175 while (len < SECTION_NAME_MAP_LENGTH)
2181 minfo ("0x%V %W", section->vma, section->_raw_size);
2183 if (output_section_statement->load_base != NULL)
2187 addr = exp_get_abs_int (output_section_statement->load_base, 0,
2188 "load base", lang_final_phase_enum);
2189 minfo (_(" load address 0x%V"), addr);
2196 print_statement_list (output_section_statement->children.head,
2197 output_section_statement);
2201 print_assignment (assignment, output_section)
2202 lang_assignment_statement_type *assignment;
2203 lang_output_section_statement_type *output_section;
2206 etree_value_type result;
2208 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2211 result = exp_fold_tree (assignment->exp->assign.src, output_section,
2212 lang_final_phase_enum, print_dot, &print_dot);
2214 minfo ("0x%V", result.value + result.section->bfd_section->vma);
2225 exp_print_tree (assignment->exp);
2231 print_input_statement (statm)
2232 lang_input_statement_type *statm;
2234 if (statm->filename != (char *) NULL)
2236 fprintf (config.map_file, "LOAD %s\n", statm->filename);
2240 /* Print all symbols defined in a particular section. This is called
2241 via bfd_link_hash_traverse. */
2244 print_one_symbol (hash_entry, ptr)
2245 struct bfd_link_hash_entry *hash_entry;
2248 asection *sec = (asection *) ptr;
2250 if ((hash_entry->type == bfd_link_hash_defined
2251 || hash_entry->type == bfd_link_hash_defweak)
2252 && sec == hash_entry->u.def.section)
2256 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2259 (hash_entry->u.def.value
2260 + hash_entry->u.def.section->output_offset
2261 + hash_entry->u.def.section->output_section->vma));
2263 minfo (" %T\n", hash_entry->root.string);
2269 /* Print information about an input section to the map file. */
2272 print_input_section (in)
2273 lang_input_section_type *in;
2275 asection *i = in->section;
2276 bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size;
2277 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2278 ldfile_output_machine);
2283 minfo ("%s", i->name);
2285 if (i->output_section != NULL)
2289 len = 1 + strlen (i->name);
2290 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2295 while (len < SECTION_NAME_MAP_LENGTH)
2301 minfo ("0x%V %W %B\n",
2302 i->output_section->vma + i->output_offset, size / opb,
2305 if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size)
2307 len = SECTION_NAME_MAP_LENGTH + 3;
2319 minfo (_("%W (size before relaxing)\n"), i->_raw_size);
2322 bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i);
2324 print_dot = i->output_section->vma + i->output_offset + size / opb;
2330 print_fill_statement (fill)
2331 lang_fill_statement_type *fill;
2335 fputs (" FILL mask 0x", config.map_file);
2336 for (p = fill->fill->data, size = fill->fill->size; size != 0; p++, size--)
2337 fprintf (config.map_file, "%02x", *p);
2338 fputs ("\n", config.map_file);
2342 print_data_statement (data)
2343 lang_data_statement_type *data;
2349 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2350 ldfile_output_machine);
2352 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2355 addr = data->output_vma;
2356 if (data->output_section != NULL)
2357 addr += data->output_section->vma;
2385 minfo ("0x%V %W %s 0x%v", addr, size, name, data->value);
2387 if (data->exp->type.node_class != etree_value)
2390 exp_print_tree (data->exp);
2395 print_dot = addr + size / opb;
2399 /* Print an address statement. These are generated by options like
2403 print_address_statement (address)
2404 lang_address_statement_type *address;
2406 minfo (_("Address of section %s set to "), address->section_name);
2407 exp_print_tree (address->address);
2411 /* Print a reloc statement. */
2414 print_reloc_statement (reloc)
2415 lang_reloc_statement_type *reloc;
2420 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2421 ldfile_output_machine);
2423 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2426 addr = reloc->output_vma;
2427 if (reloc->output_section != NULL)
2428 addr += reloc->output_section->vma;
2430 size = bfd_get_reloc_size (reloc->howto);
2432 minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name);
2434 if (reloc->name != NULL)
2435 minfo ("%s+", reloc->name);
2437 minfo ("%s+", reloc->section->name);
2439 exp_print_tree (reloc->addend_exp);
2443 print_dot = addr + size / opb;
2447 print_padding_statement (s)
2448 lang_padding_statement_type *s;
2452 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2453 ldfile_output_machine);
2457 len = sizeof " *fill*" - 1;
2458 while (len < SECTION_NAME_MAP_LENGTH)
2464 addr = s->output_offset;
2465 if (s->output_section != NULL)
2466 addr += s->output_section->vma;
2467 minfo ("0x%V %W ", addr, s->size);
2469 if (s->fill->size != 0)
2473 for (p = s->fill->data, size = s->fill->size; size != 0; p++, size--)
2474 fprintf (config.map_file, "%02x", *p);
2479 print_dot = addr + s->size / opb;
2483 print_wild_statement (w, os)
2484 lang_wild_statement_type *w;
2485 lang_output_section_statement_type *os;
2487 struct wildcard_list *sec;
2491 if (w->filenames_sorted)
2493 if (w->filename != NULL)
2494 minfo ("%s", w->filename);
2497 if (w->filenames_sorted)
2501 for (sec = w->section_list; sec; sec = sec->next)
2503 if (sec->spec.sorted)
2505 if (sec->spec.exclude_name_list != NULL)
2508 minfo ("EXCLUDE_FILE ( %s", sec->spec.exclude_name_list->name);
2509 for (tmp = sec->spec.exclude_name_list->next; tmp; tmp = tmp->next)
2510 minfo (", %s", tmp->name);
2513 if (sec->spec.name != NULL)
2514 minfo ("%s", sec->spec.name);
2517 if (sec->spec.sorted)
2524 print_statement_list (w->children.head, os);
2527 /* Print a group statement. */
2531 lang_group_statement_type *s;
2532 lang_output_section_statement_type *os;
2534 fprintf (config.map_file, "START GROUP\n");
2535 print_statement_list (s->children.head, os);
2536 fprintf (config.map_file, "END GROUP\n");
2539 /* Print the list of statements in S.
2540 This can be called for any statement type. */
2543 print_statement_list (s, os)
2544 lang_statement_union_type *s;
2545 lang_output_section_statement_type *os;
2549 print_statement (s, os);
2554 /* Print the first statement in statement list S.
2555 This can be called for any statement type. */
2558 print_statement (s, os)
2559 lang_statement_union_type *s;
2560 lang_output_section_statement_type *os;
2562 switch (s->header.type)
2565 fprintf (config.map_file, _("Fail with %d\n"), s->header.type);
2568 case lang_constructors_statement_enum:
2569 if (constructor_list.head != NULL)
2571 if (constructors_sorted)
2572 minfo (" SORT (CONSTRUCTORS)\n");
2574 minfo (" CONSTRUCTORS\n");
2575 print_statement_list (constructor_list.head, os);
2578 case lang_wild_statement_enum:
2579 print_wild_statement (&s->wild_statement, os);
2581 case lang_address_statement_enum:
2582 print_address_statement (&s->address_statement);
2584 case lang_object_symbols_statement_enum:
2585 minfo (" CREATE_OBJECT_SYMBOLS\n");
2587 case lang_fill_statement_enum:
2588 print_fill_statement (&s->fill_statement);
2590 case lang_data_statement_enum:
2591 print_data_statement (&s->data_statement);
2593 case lang_reloc_statement_enum:
2594 print_reloc_statement (&s->reloc_statement);
2596 case lang_input_section_enum:
2597 print_input_section (&s->input_section);
2599 case lang_padding_statement_enum:
2600 print_padding_statement (&s->padding_statement);
2602 case lang_output_section_statement_enum:
2603 print_output_section_statement (&s->output_section_statement);
2605 case lang_assignment_statement_enum:
2606 print_assignment (&s->assignment_statement, os);
2608 case lang_target_statement_enum:
2609 fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
2611 case lang_output_statement_enum:
2612 minfo ("OUTPUT(%s", s->output_statement.name);
2613 if (output_target != NULL)
2614 minfo (" %s", output_target);
2617 case lang_input_statement_enum:
2618 print_input_statement (&s->input_statement);
2620 case lang_group_statement_enum:
2621 print_group (&s->group_statement, os);
2623 case lang_afile_asection_pair_statement_enum:
2632 print_statement_list (statement_list.head, abs_output_section);
2635 /* Print the first N statements in statement list S to STDERR.
2636 If N == 0, nothing is printed.
2637 If N < 0, the entire list is printed.
2638 Intended to be called from GDB. */
2641 dprint_statement (s, n)
2642 lang_statement_union_type *s;
2645 FILE *map_save = config.map_file;
2647 config.map_file = stderr;
2650 print_statement_list (s, abs_output_section);
2653 while (s && --n >= 0)
2655 print_statement (s, abs_output_section);
2660 config.map_file = map_save;
2664 insert_pad (ptr, fill, alignment_needed, output_section, dot)
2665 lang_statement_union_type **ptr;
2667 unsigned int alignment_needed;
2668 asection *output_section;
2671 static fill_type zero_fill = { 1, { 0 } };
2672 lang_statement_union_type *pad;
2674 pad = ((lang_statement_union_type *)
2675 ((char *) ptr - offsetof (lang_statement_union_type, header.next)));
2676 if (ptr != &statement_list.head
2677 && pad->header.type == lang_padding_statement_enum
2678 && pad->padding_statement.output_section == output_section)
2680 /* Use the existing pad statement. The above test on output
2681 section is probably redundant, but it doesn't hurt to check. */
2685 /* Make a new padding statement, linked into existing chain. */
2686 pad = ((lang_statement_union_type *)
2687 stat_alloc (sizeof (lang_padding_statement_type)));
2688 pad->header.next = *ptr;
2690 pad->header.type = lang_padding_statement_enum;
2691 pad->padding_statement.output_section = output_section;
2692 if (fill == (fill_type *) 0)
2694 pad->padding_statement.fill = fill;
2696 pad->padding_statement.output_offset = dot - output_section->vma;
2697 pad->padding_statement.size = alignment_needed;
2698 output_section->_raw_size += alignment_needed;
2701 /* Work out how much this section will move the dot point. */
2704 size_input_section (this_ptr, output_section_statement, fill, dot)
2705 lang_statement_union_type **this_ptr;
2706 lang_output_section_statement_type *output_section_statement;
2710 lang_input_section_type *is = &((*this_ptr)->input_section);
2711 asection *i = is->section;
2713 if (is->ifile->just_syms_flag == false)
2715 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2716 ldfile_output_machine);
2717 unsigned int alignment_needed;
2720 /* Align this section first to the input sections requirement,
2721 then to the output section's requirement. If this alignment
2722 is greater than any seen before, then record it too. Perform
2723 the alignment by inserting a magic 'padding' statement. */
2725 if (output_section_statement->subsection_alignment != -1)
2726 i->alignment_power = output_section_statement->subsection_alignment;
2728 o = output_section_statement->bfd_section;
2729 if (o->alignment_power < i->alignment_power)
2730 o->alignment_power = i->alignment_power;
2732 alignment_needed = align_power (dot, i->alignment_power) - dot;
2734 if (alignment_needed != 0)
2736 insert_pad (this_ptr, fill, alignment_needed * opb, o, dot);
2737 dot += alignment_needed;
2740 /* Remember where in the output section this input section goes. */
2742 i->output_offset = dot - o->vma;
2744 /* Mark how big the output section must be to contain this now. */
2745 if (i->_cooked_size != 0)
2746 dot += i->_cooked_size / opb;
2748 dot += i->_raw_size / opb;
2749 o->_raw_size = (dot - o->vma) * opb;
2753 i->output_offset = i->vma - output_section_statement->bfd_section->vma;
2759 #define IGNORE_SECTION(bfd, s) \
2760 (((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_LOAD)) \
2761 != (SEC_ALLOC | SEC_LOAD)) \
2762 || bfd_section_size (bfd, s) == 0)
2764 /* Check to see if any allocated sections overlap with other allocated
2765 sections. This can happen when the linker script specifically specifies
2766 the output section addresses of the two sections. */
2769 lang_check_section_addresses ()
2772 unsigned opb = bfd_octets_per_byte (output_bfd);
2774 /* Scan all sections in the output list. */
2775 for (s = output_bfd->sections; s != NULL; s = s->next)
2779 /* Ignore sections which are not loaded or which have no contents. */
2780 if (IGNORE_SECTION (output_bfd, s))
2783 /* Once we reach section 's' stop our seach. This prevents two
2784 warning messages from being produced, one for 'section A overlaps
2785 section B' and one for 'section B overlaps section A'. */
2786 for (os = output_bfd->sections; os != s; os = os->next)
2793 /* Only consider loadable sections with real contents. */
2794 if (IGNORE_SECTION (output_bfd, os))
2797 /* We must check the sections' LMA addresses not their
2798 VMA addresses because overlay sections can have
2799 overlapping VMAs but they must have distinct LMAs. */
2800 s_start = bfd_section_lma (output_bfd, s);
2801 os_start = bfd_section_lma (output_bfd, os);
2802 s_end = s_start + bfd_section_size (output_bfd, s) / opb - 1;
2803 os_end = os_start + bfd_section_size (output_bfd, os) / opb - 1;
2805 /* Look for an overlap. */
2806 if ((s_end < os_start) || (s_start > os_end))
2810 _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
2811 s->name, s_start, s_end, os->name, os_start, os_end);
2813 /* Once we have found one overlap for this section,
2814 stop looking for others. */
2820 /* Make sure the new address is within the region. We explicitly permit the
2821 current address to be at the exact end of the region when the address is
2822 non-zero, in case the region is at the end of addressable memory and the
2823 calculation wraps around. */
2826 os_region_check (os, region, tree, base)
2827 lang_output_section_statement_type *os;
2828 struct memory_region_struct *region;
2832 if ((region->current < region->origin
2833 || (region->current - region->origin > region->length))
2834 && ((region->current != region->origin + region->length)
2837 if (tree != (etree_type *) NULL)
2839 einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"),
2841 os->bfd_section->owner,
2842 os->bfd_section->name,
2847 einfo (_("%X%P: region %s is full (%B section %s)\n"),
2849 os->bfd_section->owner,
2850 os->bfd_section->name);
2852 /* Reset the region pointer. */
2853 region->current = region->origin;
2857 /* Set the sizes for all the output sections. */
2860 lang_size_sections_1 (s, output_section_statement, prev, fill, dot, relax)
2861 lang_statement_union_type *s;
2862 lang_output_section_statement_type *output_section_statement;
2863 lang_statement_union_type **prev;
2868 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2869 ldfile_output_machine);
2871 /* Size up the sections from their constituent parts. */
2872 for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
2874 switch (s->header.type)
2876 case lang_output_section_statement_enum:
2879 lang_output_section_statement_type *os;
2881 os = &s->output_section_statement;
2882 if (os->bfd_section == NULL)
2883 /* This section was never actually created. */
2886 /* If this is a COFF shared library section, use the size and
2887 address from the input section. FIXME: This is COFF
2888 specific; it would be cleaner if there were some other way
2889 to do this, but nothing simple comes to mind. */
2890 if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
2894 if (os->children.head == NULL
2895 || os->children.head->header.next != NULL
2896 || os->children.head->header.type != lang_input_section_enum)
2897 einfo (_("%P%X: Internal error on COFF shared library section %s\n"),
2900 input = os->children.head->input_section.section;
2901 bfd_set_section_vma (os->bfd_section->owner,
2903 bfd_section_vma (input->owner, input));
2904 os->bfd_section->_raw_size = input->_raw_size;
2908 if (bfd_is_abs_section (os->bfd_section))
2910 /* No matter what happens, an abs section starts at zero. */
2911 ASSERT (os->bfd_section->vma == 0);
2915 if (os->addr_tree == (etree_type *) NULL)
2917 /* No address specified for this section, get one
2918 from the region specification. */
2919 if (os->region == (lang_memory_region_type *) NULL
2920 || (((bfd_get_section_flags (output_bfd, os->bfd_section)
2921 & (SEC_ALLOC | SEC_LOAD)) != 0)
2922 && os->region->name[0] == '*'
2923 && strcmp (os->region->name, "*default*") == 0))
2925 os->region = lang_memory_default (os->bfd_section);
2928 /* If a loadable section is using the default memory
2929 region, and some non default memory regions were
2930 defined, issue a warning. */
2931 if ((bfd_get_section_flags (output_bfd, os->bfd_section)
2932 & (SEC_ALLOC | SEC_LOAD)) != 0
2933 && (bfd_get_section_flags (output_bfd, os->bfd_section)
2934 & SEC_NEVER_LOAD) == 0
2935 && ! link_info.relocateable
2936 && strcmp (os->region->name, "*default*") == 0
2937 && lang_memory_region_list != NULL
2938 && (strcmp (lang_memory_region_list->name,
2940 || lang_memory_region_list->next != NULL))
2941 einfo (_("%P: warning: no memory region specified for section `%s'\n"),
2942 bfd_get_section_name (output_bfd,
2945 dot = os->region->current;
2947 if (os->section_alignment == -1)
2952 dot = align_power (dot,
2953 os->bfd_section->alignment_power);
2955 if (dot != olddot && config.warn_section_align)
2956 einfo (_("%P: warning: changing start of section %s by %u bytes\n"),
2957 os->name, (unsigned int) (dot - olddot));
2964 r = exp_fold_tree (os->addr_tree,
2966 lang_allocating_phase_enum,
2968 if (r.valid_p == false)
2970 einfo (_("%F%S: non constant address expression for section %s\n"),
2973 dot = r.value + r.section->bfd_section->vma;
2976 /* The section starts here.
2977 First, align to what the section needs. */
2979 if (os->section_alignment != -1)
2980 dot = align_power (dot, os->section_alignment);
2982 bfd_set_section_vma (0, os->bfd_section, dot);
2984 os->bfd_section->output_offset = 0;
2987 lang_size_sections_1 (os->children.head, os, &os->children.head,
2988 os->fill, dot, relax);
2990 /* Put the section within the requested block size, or
2991 align at the block boundary. */
2992 after = ALIGN_N (os->bfd_section->vma
2993 + os->bfd_section->_raw_size / opb,
2994 /* The coercion here is important, see ld.h. */
2995 (bfd_vma) os->block_value);
2997 if (bfd_is_abs_section (os->bfd_section))
2998 ASSERT (after == os->bfd_section->vma);
3000 os->bfd_section->_raw_size =
3001 (after - os->bfd_section->vma) * opb;
3002 dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
3003 os->processed = true;
3005 /* Update dot in the region ?
3006 We only do this if the section is going to be allocated,
3007 since unallocated sections do not contribute to the region's
3008 overall size in memory.
3010 If the SEC_NEVER_LOAD bit is not set, it will affect the
3011 addresses of sections after it. We have to update
3013 if (os->region != (lang_memory_region_type *) NULL
3014 && ((bfd_get_section_flags (output_bfd, os->bfd_section)
3015 & SEC_NEVER_LOAD) == 0
3016 || (bfd_get_section_flags (output_bfd, os->bfd_section)
3017 & (SEC_ALLOC | SEC_LOAD))))
3019 os->region->current = dot;
3021 /* Make sure the new address is within the region. */
3022 os_region_check (os, os->region, os->addr_tree,
3023 os->bfd_section->vma);
3025 /* If there's no load address specified, use the run
3026 region as the load region. */
3027 if (os->lma_region == NULL && os->load_base == NULL)
3028 os->lma_region = os->region;
3030 if (os->lma_region != NULL)
3032 if (os->load_base != NULL)
3034 einfo (_("%X%P: use an absolute load address or a load memory region, not both\n"));
3038 /* Don't allocate twice. */
3039 if (os->lma_region != os->region)
3041 /* Set load_base, which will be handled later. */
3043 exp_intop (os->lma_region->current);
3044 os->lma_region->current +=
3045 os->bfd_section->_raw_size / opb;
3046 os_region_check (os, os->lma_region, NULL,
3047 os->bfd_section->lma);
3055 case lang_constructors_statement_enum:
3056 dot = lang_size_sections_1 (constructor_list.head,
3057 output_section_statement,
3058 &s->wild_statement.children.head,
3062 case lang_data_statement_enum:
3064 unsigned int size = 0;
3066 s->data_statement.output_vma =
3067 dot - output_section_statement->bfd_section->vma;
3068 s->data_statement.output_section =
3069 output_section_statement->bfd_section;
3071 switch (s->data_statement.type)
3092 output_section_statement->bfd_section->_raw_size += size;
3093 /* The output section gets contents, and then we inspect for
3094 any flags set in the input script which override any ALLOC. */
3095 output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS;
3096 if (!(output_section_statement->flags & SEC_NEVER_LOAD))
3098 output_section_statement->bfd_section->flags |=
3099 SEC_ALLOC | SEC_LOAD;
3104 case lang_reloc_statement_enum:
3108 s->reloc_statement.output_vma =
3109 dot - output_section_statement->bfd_section->vma;
3110 s->reloc_statement.output_section =
3111 output_section_statement->bfd_section;
3112 size = bfd_get_reloc_size (s->reloc_statement.howto);
3114 output_section_statement->bfd_section->_raw_size += size;
3118 case lang_wild_statement_enum:
3120 dot = lang_size_sections_1 (s->wild_statement.children.head,
3121 output_section_statement,
3122 &s->wild_statement.children.head,
3127 case lang_object_symbols_statement_enum:
3128 link_info.create_object_symbols_section =
3129 output_section_statement->bfd_section;
3131 case lang_output_statement_enum:
3132 case lang_target_statement_enum:
3134 case lang_input_section_enum:
3138 i = (*prev)->input_section.section;
3141 if (i->_cooked_size == 0)
3142 i->_cooked_size = i->_raw_size;
3148 if (! bfd_relax_section (i->owner, i, &link_info, &again))
3149 einfo (_("%P%F: can't relax section: %E\n"));
3153 dot = size_input_section (prev, output_section_statement,
3154 output_section_statement->fill, dot);
3157 case lang_input_statement_enum:
3159 case lang_fill_statement_enum:
3160 s->fill_statement.output_section =
3161 output_section_statement->bfd_section;
3163 fill = s->fill_statement.fill;
3165 case lang_assignment_statement_enum:
3167 bfd_vma newdot = dot;
3169 exp_fold_tree (s->assignment_statement.exp,
3170 output_section_statement,
3171 lang_allocating_phase_enum,
3177 if (output_section_statement == abs_output_section)
3179 /* If we don't have an output section, then just adjust
3180 the default memory address. */
3181 lang_memory_region_lookup ("*default*")->current = newdot;
3185 /* Insert a pad after this statement. We can't
3186 put the pad before when relaxing, in case the
3187 assignment references dot. */
3188 insert_pad (&s->header.next, fill, (newdot - dot) * opb,
3189 output_section_statement->bfd_section, dot);
3191 /* Don't neuter the pad below when relaxing. */
3200 case lang_padding_statement_enum:
3201 /* If this is the first time lang_size_sections is called,
3202 we won't have any padding statements. If this is the
3203 second or later passes when relaxing, we should allow
3204 padding to shrink. If padding is needed on this pass, it
3205 will be added back in. */
3206 s->padding_statement.size = 0;
3208 /* Make sure output_offset is valid. If relaxation shrinks
3209 the section and this pad isn't needed, it's possible to
3210 have output_offset larger than the final size of the
3211 section. bfd_set_section_contents will complain even for
3212 a pad size of zero. */
3213 s->padding_statement.output_offset
3214 = dot - output_section_statement->bfd_section->vma;
3217 case lang_group_statement_enum:
3218 dot = lang_size_sections_1 (s->group_statement.children.head,
3219 output_section_statement,
3220 &s->group_statement.children.head,
3228 /* We can only get here when relaxing is turned on. */
3229 case lang_address_statement_enum:
3232 prev = &s->header.next;
3238 lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
3239 lang_statement_union_type *s;
3240 lang_output_section_statement_type *output_section_statement;
3241 lang_statement_union_type **prev;
3248 exp_data_seg.phase = exp_dataseg_none;
3249 result = lang_size_sections_1 (s, output_section_statement, prev, fill,
3251 if (exp_data_seg.phase == exp_dataseg_end_seen)
3253 /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_END pair was seen, check whether
3254 a page could be saved in the data segment. */
3255 bfd_vma first, last;
3257 first = -exp_data_seg.base & (exp_data_seg.pagesize - 1);
3258 last = exp_data_seg.end & (exp_data_seg.pagesize - 1);
3260 && ((exp_data_seg.base & ~(exp_data_seg.pagesize - 1))
3261 != (exp_data_seg.end & ~(exp_data_seg.pagesize - 1)))
3262 && first + last <= exp_data_seg.pagesize)
3264 exp_data_seg.phase = exp_dataseg_adjust;
3265 result = lang_size_sections_1 (s, output_section_statement, prev,
3274 lang_do_assignments (s, output_section_statement, fill, dot)
3275 lang_statement_union_type *s;
3276 lang_output_section_statement_type *output_section_statement;
3280 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3281 ldfile_output_machine);
3283 for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
3285 switch (s->header.type)
3287 case lang_constructors_statement_enum:
3288 dot = lang_do_assignments (constructor_list.head,
3289 output_section_statement,
3294 case lang_output_section_statement_enum:
3296 lang_output_section_statement_type *os;
3298 os = &(s->output_section_statement);
3299 if (os->bfd_section != NULL)
3301 dot = os->bfd_section->vma;
3302 (void) lang_do_assignments (os->children.head, os,
3304 dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
3309 /* If nothing has been placed into the output section then
3310 it won't have a bfd_section. */
3311 if (os->bfd_section)
3313 os->bfd_section->lma
3314 = exp_get_abs_int (os->load_base, 0, "load base",
3315 lang_final_phase_enum);
3320 case lang_wild_statement_enum:
3322 dot = lang_do_assignments (s->wild_statement.children.head,
3323 output_section_statement,
3328 case lang_object_symbols_statement_enum:
3329 case lang_output_statement_enum:
3330 case lang_target_statement_enum:
3332 case lang_common_statement_enum:
3335 case lang_data_statement_enum:
3337 etree_value_type value;
3339 value = exp_fold_tree (s->data_statement.exp,
3341 lang_final_phase_enum, dot, &dot);
3342 s->data_statement.value = value.value;
3343 if (value.valid_p == false)
3344 einfo (_("%F%P: invalid data statement\n"));
3348 switch (s->data_statement.type)
3372 case lang_reloc_statement_enum:
3374 etree_value_type value;
3376 value = exp_fold_tree (s->reloc_statement.addend_exp,
3378 lang_final_phase_enum, dot, &dot);
3379 s->reloc_statement.addend_value = value.value;
3380 if (value.valid_p == false)
3381 einfo (_("%F%P: invalid reloc statement\n"));
3383 dot += bfd_get_reloc_size (s->reloc_statement.howto) / opb;
3386 case lang_input_section_enum:
3388 asection *in = s->input_section.section;
3390 if (in->_cooked_size != 0)
3391 dot += in->_cooked_size / opb;
3393 dot += in->_raw_size / opb;
3397 case lang_input_statement_enum:
3399 case lang_fill_statement_enum:
3400 fill = s->fill_statement.fill;
3402 case lang_assignment_statement_enum:
3404 exp_fold_tree (s->assignment_statement.exp,
3405 output_section_statement,
3406 lang_final_phase_enum,
3412 case lang_padding_statement_enum:
3413 dot += s->padding_statement.size / opb;
3416 case lang_group_statement_enum:
3417 dot = lang_do_assignments (s->group_statement.children.head,
3418 output_section_statement,
3426 case lang_address_statement_enum:
3434 /* Fix any .startof. or .sizeof. symbols. When the assemblers see the
3435 operator .startof. (section_name), it produces an undefined symbol
3436 .startof.section_name. Similarly, when it sees
3437 .sizeof. (section_name), it produces an undefined symbol
3438 .sizeof.section_name. For all the output sections, we look for
3439 such symbols, and set them to the correct value. */
3446 if (link_info.relocateable)
3449 for (s = output_bfd->sections; s != NULL; s = s->next)
3451 const char *secname;
3453 struct bfd_link_hash_entry *h;
3455 secname = bfd_get_section_name (output_bfd, s);
3456 buf = xmalloc (10 + strlen (secname));
3458 sprintf (buf, ".startof.%s", secname);
3459 h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
3460 if (h != NULL && h->type == bfd_link_hash_undefined)
3462 h->type = bfd_link_hash_defined;
3463 h->u.def.value = bfd_get_section_vma (output_bfd, s);
3464 h->u.def.section = bfd_abs_section_ptr;
3467 sprintf (buf, ".sizeof.%s", secname);
3468 h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
3469 if (h != NULL && h->type == bfd_link_hash_undefined)
3473 opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3474 ldfile_output_machine);
3475 h->type = bfd_link_hash_defined;
3476 if (s->_cooked_size != 0)
3477 h->u.def.value = s->_cooked_size / opb;
3479 h->u.def.value = s->_raw_size / opb;
3480 h->u.def.section = bfd_abs_section_ptr;
3490 struct bfd_link_hash_entry *h;
3493 if (link_info.relocateable || link_info.shared)
3498 if (entry_symbol == (char *) NULL)
3500 /* No entry has been specified. Look for start, but don't warn
3501 if we don't find it. */
3502 entry_symbol = "start";
3506 h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
3507 if (h != (struct bfd_link_hash_entry *) NULL
3508 && (h->type == bfd_link_hash_defined
3509 || h->type == bfd_link_hash_defweak)
3510 && h->u.def.section->output_section != NULL)
3514 val = (h->u.def.value
3515 + bfd_get_section_vma (output_bfd,
3516 h->u.def.section->output_section)
3517 + h->u.def.section->output_offset);
3518 if (! bfd_set_start_address (output_bfd, val))
3519 einfo (_("%P%F:%s: can't set start address\n"), entry_symbol);
3526 /* We couldn't find the entry symbol. Try parsing it as a
3528 val = bfd_scan_vma (entry_symbol, &send, 0);
3531 if (! bfd_set_start_address (output_bfd, val))
3532 einfo (_("%P%F: can't set start address\n"));
3538 /* Can't find the entry symbol, and it's not a number. Use
3539 the first address in the text section. */
3540 ts = bfd_get_section_by_name (output_bfd, entry_section);
3541 if (ts != (asection *) NULL)
3544 einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"),
3545 entry_symbol, bfd_get_section_vma (output_bfd, ts));
3546 if (! bfd_set_start_address (output_bfd,
3547 bfd_get_section_vma (output_bfd,
3549 einfo (_("%P%F: can't set start address\n"));
3554 einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"),
3561 /* This is a small function used when we want to ignore errors from
3565 #ifdef ANSI_PROTOTYPES
3566 ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...)
3568 ignore_bfd_errors (s)
3569 const char *s ATTRIBUTE_UNUSED;
3572 /* Don't do anything. */
3575 /* Check that the architecture of all the input files is compatible
3576 with the output file. Also call the backend to let it do any
3577 other checking that is needed. */
3582 lang_statement_union_type *file;
3584 const bfd_arch_info_type *compatible;
3586 for (file = file_chain.head;
3587 file != (lang_statement_union_type *) NULL;
3588 file = file->input_statement.next)
3590 input_bfd = file->input_statement.the_bfd;
3591 compatible = bfd_arch_get_compatible (input_bfd, output_bfd);
3593 /* In general it is not possible to perform a relocatable
3594 link between differing object formats when the input
3595 file has relocations, because the relocations in the
3596 input format may not have equivalent representations in
3597 the output format (and besides BFD does not translate
3598 relocs for other link purposes than a final link). */
3599 if ((link_info.relocateable || link_info.emitrelocations)
3600 && (compatible == NULL
3601 || bfd_get_flavour (input_bfd) != bfd_get_flavour (output_bfd))
3602 && (bfd_get_file_flags (input_bfd) & HAS_RELOC) != 0)
3604 einfo (_("%P%F: Relocatable linking with relocations from format %s (%B) to format %s (%B) is not supported\n"),
3605 bfd_get_target (input_bfd), input_bfd,
3606 bfd_get_target (output_bfd), output_bfd);
3607 /* einfo with %F exits. */
3610 if (compatible == NULL)
3612 if (command_line.warn_mismatch)
3613 einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"),
3614 bfd_printable_name (input_bfd), input_bfd,
3615 bfd_printable_name (output_bfd));
3617 else if (bfd_count_sections (input_bfd))
3619 /* If the input bfd has no contents, it shouldn't set the
3620 private data of the output bfd. */
3622 bfd_error_handler_type pfn = NULL;
3624 /* If we aren't supposed to warn about mismatched input
3625 files, temporarily set the BFD error handler to a
3626 function which will do nothing. We still want to call
3627 bfd_merge_private_bfd_data, since it may set up
3628 information which is needed in the output file. */
3629 if (! command_line.warn_mismatch)
3630 pfn = bfd_set_error_handler (ignore_bfd_errors);
3631 if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
3633 if (command_line.warn_mismatch)
3634 einfo (_("%E%X: failed to merge target specific data of file %B\n"),
3637 if (! command_line.warn_mismatch)
3638 bfd_set_error_handler (pfn);
3643 /* Look through all the global common symbols and attach them to the
3644 correct section. The -sort-common command line switch may be used
3645 to roughly sort the entries by size. */
3650 if (command_line.inhibit_common_definition)
3652 if (link_info.relocateable
3653 && ! command_line.force_common_definition)
3656 if (! config.sort_common)
3657 bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL);
3662 for (power = 4; power >= 0; power--)
3663 bfd_link_hash_traverse (link_info.hash, lang_one_common,
3668 /* Place one common symbol in the correct section. */
3671 lang_one_common (h, info)
3672 struct bfd_link_hash_entry *h;
3675 unsigned int power_of_two;
3678 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3679 ldfile_output_machine);
3681 if (h->type != bfd_link_hash_common)
3685 power_of_two = h->u.c.p->alignment_power;
3687 if (config.sort_common
3688 && power_of_two < (unsigned int) *(int *) info)
3691 section = h->u.c.p->section;
3693 /* Increase the size of the section. */
3694 section->_cooked_size = ALIGN_N ((section->_cooked_size + opb - 1) / opb,
3695 (bfd_size_type) (1 << power_of_two)) * opb;
3697 /* Adjust the alignment if necessary. */
3698 if (power_of_two > section->alignment_power)
3699 section->alignment_power = power_of_two;
3701 /* Change the symbol from common to defined. */
3702 h->type = bfd_link_hash_defined;
3703 h->u.def.section = section;
3704 h->u.def.value = section->_cooked_size;
3706 /* Increase the size of the section. */
3707 section->_cooked_size += size;
3709 /* Make sure the section is allocated in memory, and make sure that
3710 it is no longer a common section. */
3711 section->flags |= SEC_ALLOC;
3712 section->flags &= ~SEC_IS_COMMON;
3714 if (config.map_file != NULL)
3716 static boolean header_printed;
3721 if (! header_printed)
3723 minfo (_("\nAllocating common symbols\n"));
3724 minfo (_("Common symbol size file\n\n"));
3725 header_printed = true;
3728 name = demangle (h->root.string);
3730 len = strlen (name);
3745 if (size <= 0xffffffff)
3746 sprintf (buf, "%lx", (unsigned long) size);
3748 sprintf_vma (buf, size);
3758 minfo ("%B\n", section->owner);
3764 /* Run through the input files and ensure that every input section has
3765 somewhere to go. If one is found without a destination then create
3766 an input request and place it into the statement tree. */
3769 lang_place_orphans ()
3771 LANG_FOR_EACH_INPUT_STATEMENT (file)
3775 for (s = file->the_bfd->sections;
3776 s != (asection *) NULL;
3779 if (s->output_section == (asection *) NULL)
3781 /* This section of the file is not attatched, root
3782 around for a sensible place for it to go. */
3784 if (file->just_syms_flag)
3786 /* We are only retrieving symbol values from this
3787 file. We want the symbols to act as though the
3788 values in the file are absolute. */
3789 s->output_section = bfd_abs_section_ptr;
3790 s->output_offset = s->vma;
3792 else if (strcmp (s->name, "COMMON") == 0)
3794 /* This is a lonely common section which must have
3795 come from an archive. We attach to the section
3796 with the wildcard. */
3797 if (! link_info.relocateable
3798 || command_line.force_common_definition)
3800 if (default_common_section == NULL)
3803 /* This message happens when using the
3804 svr3.ifile linker script, so I have
3806 info_msg (_("%P: no [COMMON] command, defaulting to .bss\n"));
3808 default_common_section =
3809 lang_output_section_statement_lookup (".bss");
3812 lang_add_section (&default_common_section->children, s,
3813 default_common_section, file);
3816 else if (ldemul_place_orphan (file, s))
3820 lang_output_section_statement_type *os;
3822 os = lang_output_section_statement_lookup (s->name);
3823 lang_add_section (&os->children, s, os, file);
3831 lang_set_flags (ptr, flags, invert)
3832 lang_memory_region_type *ptr;
3836 flagword *ptr_flags;
3838 ptr_flags = invert ? &ptr->not_flags : &ptr->flags;
3844 *ptr_flags |= SEC_ALLOC;
3848 *ptr_flags |= SEC_READONLY;
3852 *ptr_flags |= SEC_DATA;
3856 *ptr_flags |= SEC_CODE;
3861 *ptr_flags |= SEC_LOAD;
3865 einfo (_("%P%F: invalid syntax in flags\n"));
3872 /* Call a function on each input file. This function will be called
3873 on an archive, but not on the elements. */
3876 lang_for_each_input_file (func)
3877 void (*func) PARAMS ((lang_input_statement_type *));
3879 lang_input_statement_type *f;
3881 for (f = (lang_input_statement_type *) input_file_chain.head;
3883 f = (lang_input_statement_type *) f->next_real_file)
3887 /* Call a function on each file. The function will be called on all
3888 the elements of an archive which are included in the link, but will
3889 not be called on the archive file itself. */
3892 lang_for_each_file (func)
3893 void (*func) PARAMS ((lang_input_statement_type *));
3895 LANG_FOR_EACH_INPUT_STATEMENT (f)
3906 lang_for_each_input_section (func)
3907 void (*func) PARAMS ((bfd *ab, asection *as));
3909 LANG_FOR_EACH_INPUT_STATEMENT (f)
3913 for (s = f->the_bfd->sections;
3914 s != (asection *) NULL;
3917 func (f->the_bfd, s);
3925 ldlang_add_file (entry)
3926 lang_input_statement_type *entry;
3930 lang_statement_append (&file_chain,
3931 (lang_statement_union_type *) entry,
3934 /* The BFD linker needs to have a list of all input BFDs involved in
3936 ASSERT (entry->the_bfd->link_next == (bfd *) NULL);
3937 ASSERT (entry->the_bfd != output_bfd);
3938 for (pp = &link_info.input_bfds;
3939 *pp != (bfd *) NULL;
3940 pp = &(*pp)->link_next)
3942 *pp = entry->the_bfd;
3943 entry->the_bfd->usrdata = (PTR) entry;
3944 bfd_set_gp_size (entry->the_bfd, g_switch_value);
3946 /* Look through the sections and check for any which should not be
3947 included in the link. We need to do this now, so that we can
3948 notice when the backend linker tries to report multiple
3949 definition errors for symbols which are in sections we aren't
3950 going to link. FIXME: It might be better to entirely ignore
3951 symbols which are defined in sections which are going to be
3952 discarded. This would require modifying the backend linker for
3953 each backend which might set the SEC_LINK_ONCE flag. If we do
3954 this, we should probably handle SEC_EXCLUDE in the same way. */
3956 bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry);
3960 lang_add_output (name, from_script)
3964 /* Make -o on command line override OUTPUT in script. */
3965 if (had_output_filename == false || !from_script)
3967 output_filename = name;
3968 had_output_filename = true;
3972 static lang_output_section_statement_type *current_section;
3984 for (l = 0; l < 32; l++)
3986 if (i >= (unsigned int) x)
3994 lang_output_section_statement_type *
3995 lang_enter_output_section_statement (output_section_statement_name,
3996 address_exp, sectype, block_value,
3997 align, subalign, ebase)
3998 const char *output_section_statement_name;
3999 etree_type *address_exp;
4000 enum section_type sectype;
4001 bfd_vma block_value;
4003 etree_type *subalign;
4006 lang_output_section_statement_type *os;
4010 lang_output_section_statement_lookup (output_section_statement_name);
4012 /* Add this statement to tree. */
4014 add_statement (lang_output_section_statement_enum,
4015 output_section_statement);
4017 /* Make next things chain into subchain of this. */
4019 if (os->addr_tree == (etree_type *) NULL)
4021 os->addr_tree = address_exp;
4023 os->sectype = sectype;
4024 if (sectype != noload_section)
4025 os->flags = SEC_NO_FLAGS;
4027 os->flags = SEC_NEVER_LOAD;
4028 os->block_value = block_value ? block_value : 1;
4029 stat_ptr = &os->children;
4031 os->subsection_alignment =
4032 topower (exp_get_value_int (subalign, -1, "subsection alignment", 0));
4033 os->section_alignment =
4034 topower (exp_get_value_int (align, -1, "section alignment", 0));
4036 os->load_base = ebase;
4043 lang_output_statement_type *new =
4044 new_stat (lang_output_statement, stat_ptr);
4046 new->name = output_filename;
4049 /* Reset the current counters in the regions. */
4052 lang_reset_memory_regions ()
4054 lang_memory_region_type *p = lang_memory_region_list;
4057 for (p = lang_memory_region_list;
4058 p != (lang_memory_region_type *) NULL;
4061 p->old_length = (bfd_size_type) (p->current - p->origin);
4062 p->current = p->origin;
4065 for (o = output_bfd->sections; o != NULL; o = o->next)
4069 /* If the wild pattern was marked KEEP, the member sections
4070 should be as well. */
4073 gc_section_callback (ptr, sec, section, file, data)
4074 lang_wild_statement_type *ptr;
4075 struct wildcard_list *sec ATTRIBUTE_UNUSED;
4077 lang_input_statement_type *file ATTRIBUTE_UNUSED;
4078 PTR data ATTRIBUTE_UNUSED;
4080 if (ptr->keep_sections)
4081 section->flags |= SEC_KEEP;
4084 /* Handle a wild statement, marking it against GC. */
4088 lang_wild_statement_type *s;
4090 walk_wild (s, gc_section_callback, NULL);
4093 /* Iterate over sections marking them against GC. */
4096 lang_gc_sections_1 (s)
4097 lang_statement_union_type *s;
4099 for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
4101 switch (s->header.type)
4103 case lang_wild_statement_enum:
4104 lang_gc_wild (&s->wild_statement);
4106 case lang_constructors_statement_enum:
4107 lang_gc_sections_1 (constructor_list.head);
4109 case lang_output_section_statement_enum:
4110 lang_gc_sections_1 (s->output_section_statement.children.head);
4112 case lang_group_statement_enum:
4113 lang_gc_sections_1 (s->group_statement.children.head);
4124 struct bfd_link_hash_entry *h;
4125 ldlang_undef_chain_list_type *ulist, fake_list_start;
4127 /* Keep all sections so marked in the link script. */
4129 lang_gc_sections_1 (statement_list.head);
4131 /* Keep all sections containing symbols undefined on the command-line.
4132 Handle the entry symbol at the same time. */
4134 if (entry_symbol != NULL)
4136 fake_list_start.next = ldlang_undef_chain_list_head;
4137 fake_list_start.name = (char *) entry_symbol;
4138 ulist = &fake_list_start;
4141 ulist = ldlang_undef_chain_list_head;
4143 for (; ulist; ulist = ulist->next)
4145 h = bfd_link_hash_lookup (link_info.hash, ulist->name,
4146 false, false, false);
4148 if (h != (struct bfd_link_hash_entry *) NULL
4149 && (h->type == bfd_link_hash_defined
4150 || h->type == bfd_link_hash_defweak)
4151 && ! bfd_is_abs_section (h->u.def.section))
4153 h->u.def.section->flags |= SEC_KEEP;
4157 bfd_gc_sections (output_bfd, &link_info);
4163 lang_reasonable_defaults ();
4164 current_target = default_target;
4166 /* Open the output file. */
4167 lang_for_each_statement (ldlang_open_output);
4169 ldemul_create_output_section_statements ();
4171 /* Add to the hash table all undefineds on the command line. */
4172 lang_place_undefineds ();
4174 already_linked_table_init ();
4176 /* Create a bfd for each input file. */
4177 current_target = default_target;
4178 open_input_bfds (statement_list.head, false);
4180 ldemul_after_open ();
4182 already_linked_table_free ();
4184 /* Make sure that we're not mixing architectures. We call this
4185 after all the input files have been opened, but before we do any
4186 other processing, so that any operations merge_private_bfd_data
4187 does on the output file will be known during the rest of the
4191 /* Handle .exports instead of a version script if we're told to do so. */
4192 if (command_line.version_exports_section)
4193 lang_do_version_exports_section ();
4195 /* Build all sets based on the information gathered from the input
4197 ldctor_build_sets ();
4199 /* Remove unreferenced sections if asked to. */
4200 if (command_line.gc_sections)
4201 lang_gc_sections ();
4203 /* If there were any SEC_MERGE sections, finish their merging, so that
4204 section sizes can be computed. This has to be done after GC of sections,
4205 so that GCed sections are not merged, but before assigning output
4206 sections, since removing whole input sections is hard then. */
4207 bfd_merge_sections (output_bfd, &link_info);
4209 /* Size up the common data. */
4212 /* Run through the contours of the script and attach input sections
4213 to the correct output sections. */
4214 map_input_to_output_sections (statement_list.head, (char *) NULL,
4215 (lang_output_section_statement_type *) NULL);
4217 /* Find any sections not attached explicitly and handle them. */
4218 lang_place_orphans ();
4220 if (! link_info.relocateable)
4222 /* Look for a text section and set the readonly attribute in it. */
4223 asection *found = bfd_get_section_by_name (output_bfd, ".text");
4225 if (found != (asection *) NULL)
4227 if (config.text_read_only)
4228 found->flags |= SEC_READONLY;
4230 found->flags &= ~SEC_READONLY;
4234 /* Do anything special before sizing sections. This is where ELF
4235 and other back-ends size dynamic sections. */
4236 ldemul_before_allocation ();
4238 /* We must record the program headers before we try to fix the
4239 section positions, since they will affect SIZEOF_HEADERS. */
4240 lang_record_phdrs ();
4242 /* Size up the sections. */
4243 lang_size_sections (statement_list.head,
4245 &statement_list.head, 0, (bfd_vma) 0, NULL);
4247 /* Now run around and relax if we can. */
4248 if (command_line.relax)
4250 /* Keep relaxing until bfd_relax_section gives up. */
4251 boolean relax_again;
4255 lang_reset_memory_regions ();
4257 relax_again = false;
4259 /* Note: pe-dll.c does something like this also. If you find
4260 you need to change this code, you probably need to change
4261 pe-dll.c also. DJ */
4263 /* Do all the assignments with our current guesses as to
4265 lang_do_assignments (statement_list.head,
4267 (fill_type *) 0, (bfd_vma) 0);
4269 /* Perform another relax pass - this time we know where the
4270 globals are, so can make better guess. */
4271 lang_size_sections (statement_list.head,
4273 &(statement_list.head), 0, (bfd_vma) 0,
4276 while (relax_again);
4279 /* See if anything special should be done now we know how big
4281 ldemul_after_allocation ();
4283 /* Fix any .startof. or .sizeof. symbols. */
4284 lang_set_startof ();
4286 /* Do all the assignments, now that we know the final resting places
4287 of all the symbols. */
4289 lang_do_assignments (statement_list.head,
4291 (fill_type *) 0, (bfd_vma) 0);
4293 /* Make sure that the section addresses make sense. */
4294 if (! link_info.relocateable
4295 && command_line.check_section_addresses)
4296 lang_check_section_addresses ();
4304 /* EXPORTED TO YACC */
4307 lang_add_wild (filespec, section_list, keep_sections)
4308 struct wildcard_spec *filespec;
4309 struct wildcard_list *section_list;
4310 boolean keep_sections;
4312 struct wildcard_list *curr, *next;
4313 lang_wild_statement_type *new;
4315 /* Reverse the list as the parser puts it back to front. */
4316 for (curr = section_list, section_list = NULL;
4318 section_list = curr, curr = next)
4320 if (curr->spec.name != NULL && strcmp (curr->spec.name, "COMMON") == 0)
4321 placed_commons = true;
4324 curr->next = section_list;
4327 if (filespec != NULL && filespec->name != NULL)
4329 if (strcmp (filespec->name, "*") == 0)
4330 filespec->name = NULL;
4331 else if (! wildcardp (filespec->name))
4332 lang_has_input_file = true;
4335 new = new_stat (lang_wild_statement, stat_ptr);
4336 new->filename = NULL;
4337 new->filenames_sorted = false;
4338 if (filespec != NULL)
4340 new->filename = filespec->name;
4341 new->filenames_sorted = filespec->sorted;
4343 new->section_list = section_list;
4344 new->keep_sections = keep_sections;
4345 lang_list_init (&new->children);
4349 lang_section_start (name, address)
4351 etree_type *address;
4353 lang_address_statement_type *ad;
4355 ad = new_stat (lang_address_statement, stat_ptr);
4356 ad->section_name = name;
4357 ad->address = address;
4360 /* Set the start symbol to NAME. CMDLINE is nonzero if this is called
4361 because of a -e argument on the command line, or zero if this is
4362 called by ENTRY in a linker script. Command line arguments take
4366 lang_add_entry (name, cmdline)
4370 if (entry_symbol == NULL
4372 || ! entry_from_cmdline)
4374 entry_symbol = name;
4375 entry_from_cmdline = cmdline;
4380 lang_add_target (name)
4383 lang_target_statement_type *new = new_stat (lang_target_statement,
4399 map_option_f = true;
4407 lang_add_fill (fill)
4410 lang_fill_statement_type *new = new_stat (lang_fill_statement,
4417 lang_add_data (type, exp)
4419 union etree_union *exp;
4422 lang_data_statement_type *new = new_stat (lang_data_statement,
4430 /* Create a new reloc statement. RELOC is the BFD relocation type to
4431 generate. HOWTO is the corresponding howto structure (we could
4432 look this up, but the caller has already done so). SECTION is the
4433 section to generate a reloc against, or NAME is the name of the
4434 symbol to generate a reloc against. Exactly one of SECTION and
4435 NAME must be NULL. ADDEND is an expression for the addend. */
4438 lang_add_reloc (reloc, howto, section, name, addend)
4439 bfd_reloc_code_real_type reloc;
4440 reloc_howto_type *howto;
4443 union etree_union *addend;
4445 lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
4449 p->section = section;
4451 p->addend_exp = addend;
4453 p->addend_value = 0;
4454 p->output_section = NULL;
4458 lang_assignment_statement_type *
4459 lang_add_assignment (exp)
4462 lang_assignment_statement_type *new = new_stat (lang_assignment_statement,
4470 lang_add_attribute (attribute)
4471 enum statement_enum attribute;
4473 new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr);
4480 if (startup_file != (char *) NULL)
4482 einfo (_("%P%Fmultiple STARTUP files\n"));
4484 first_file->filename = name;
4485 first_file->local_sym_name = name;
4486 first_file->real = true;
4488 startup_file = name;
4495 lang_float_flag = maybe;
4499 lang_leave_output_section_statement (fill, memspec, phdrs, lma_memspec)
4501 const char *memspec;
4502 struct lang_output_section_phdr_list *phdrs;
4503 const char *lma_memspec;
4505 current_section->fill = fill;
4506 current_section->region = lang_memory_region_lookup (memspec);
4507 if (strcmp (lma_memspec, "*default*") != 0)
4509 current_section->lma_region = lang_memory_region_lookup (lma_memspec);
4510 /* If no runtime region has been given, but the load region has
4511 been, use the load region. */
4512 if (strcmp (memspec, "*default*") == 0)
4513 current_section->region = lang_memory_region_lookup (lma_memspec);
4515 current_section->phdrs = phdrs;
4516 stat_ptr = &statement_list;
4519 /* Create an absolute symbol with the given name with the value of the
4520 address of first byte of the section named.
4522 If the symbol already exists, then do nothing. */
4525 lang_abs_symbol_at_beginning_of (secname, name)
4526 const char *secname;
4529 struct bfd_link_hash_entry *h;
4531 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
4532 if (h == (struct bfd_link_hash_entry *) NULL)
4533 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
4535 if (h->type == bfd_link_hash_new
4536 || h->type == bfd_link_hash_undefined)
4540 h->type = bfd_link_hash_defined;
4542 sec = bfd_get_section_by_name (output_bfd, secname);
4543 if (sec == (asection *) NULL)
4546 h->u.def.value = bfd_get_section_vma (output_bfd, sec);
4548 h->u.def.section = bfd_abs_section_ptr;
4552 /* Create an absolute symbol with the given name with the value of the
4553 address of the first byte after the end of the section named.
4555 If the symbol already exists, then do nothing. */
4558 lang_abs_symbol_at_end_of (secname, name)
4559 const char *secname;
4562 struct bfd_link_hash_entry *h;
4564 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
4565 if (h == (struct bfd_link_hash_entry *) NULL)
4566 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
4568 if (h->type == bfd_link_hash_new
4569 || h->type == bfd_link_hash_undefined)
4573 h->type = bfd_link_hash_defined;
4575 sec = bfd_get_section_by_name (output_bfd, secname);
4576 if (sec == (asection *) NULL)
4579 h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
4580 + bfd_section_size (output_bfd, sec) /
4581 bfd_octets_per_byte (output_bfd));
4583 h->u.def.section = bfd_abs_section_ptr;
4588 lang_statement_append (list, element, field)
4589 lang_statement_list_type *list;
4590 lang_statement_union_type *element;
4591 lang_statement_union_type **field;
4593 *(list->tail) = element;
4597 /* Set the output format type. -oformat overrides scripts. */
4600 lang_add_output_format (format, big, little, from_script)
4606 if (output_target == NULL || !from_script)
4608 if (command_line.endian == ENDIAN_BIG
4611 else if (command_line.endian == ENDIAN_LITTLE
4615 output_target = format;
4619 /* Enter a group. This creates a new lang_group_statement, and sets
4620 stat_ptr to build new statements within the group. */
4625 lang_group_statement_type *g;
4627 g = new_stat (lang_group_statement, stat_ptr);
4628 lang_list_init (&g->children);
4629 stat_ptr = &g->children;
4632 /* Leave a group. This just resets stat_ptr to start writing to the
4633 regular list of statements again. Note that this will not work if
4634 groups can occur inside anything else which can adjust stat_ptr,
4635 but currently they can't. */
4640 stat_ptr = &statement_list;
4643 /* Add a new program header. This is called for each entry in a PHDRS
4644 command in a linker script. */
4647 lang_new_phdr (name, type, filehdr, phdrs, at, flags)
4655 struct lang_phdr *n, **pp;
4657 n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
4660 n->type = exp_get_value_int (type, 0, "program header type",
4661 lang_final_phase_enum);
4662 n->filehdr = filehdr;
4667 for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
4672 /* Record the program header information in the output BFD. FIXME: We
4673 should not be calling an ELF specific function here. */
4676 lang_record_phdrs ()
4680 struct lang_output_section_phdr_list *last;
4681 struct lang_phdr *l;
4682 lang_statement_union_type *u;
4685 secs = (asection **) xmalloc (alc * sizeof (asection *));
4687 for (l = lang_phdr_list; l != NULL; l = l->next)
4694 for (u = lang_output_section_statement.head;
4696 u = u->output_section_statement.next)
4698 lang_output_section_statement_type *os;
4699 struct lang_output_section_phdr_list *pl;
4701 os = &u->output_section_statement;
4708 if (os->sectype == noload_section
4709 || os->bfd_section == NULL
4710 || (os->bfd_section->flags & SEC_ALLOC) == 0)
4715 if (os->bfd_section == NULL)
4718 for (; pl != NULL; pl = pl->next)
4720 if (strcmp (pl->name, l->name) == 0)
4725 secs = ((asection **)
4726 xrealloc (secs, alc * sizeof (asection *)));
4728 secs[c] = os->bfd_section;
4735 if (l->flags == NULL)
4738 flags = exp_get_vma (l->flags, 0, "phdr flags",
4739 lang_final_phase_enum);
4744 at = exp_get_vma (l->at, 0, "phdr load address",
4745 lang_final_phase_enum);
4747 if (! bfd_record_phdr (output_bfd, l->type,
4748 l->flags != NULL, flags, l->at != NULL,
4749 at, l->filehdr, l->phdrs, c, secs))
4750 einfo (_("%F%P: bfd_record_phdr failed: %E\n"));
4755 /* Make sure all the phdr assignments succeeded. */
4756 for (u = lang_output_section_statement.head;
4758 u = u->output_section_statement.next)
4760 struct lang_output_section_phdr_list *pl;
4762 if (u->output_section_statement.bfd_section == NULL)
4765 for (pl = u->output_section_statement.phdrs;
4768 if (! pl->used && strcmp (pl->name, "NONE") != 0)
4769 einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"),
4770 u->output_section_statement.name, pl->name);
4774 /* Record a list of sections which may not be cross referenced. */
4777 lang_add_nocrossref (l)
4778 struct lang_nocrossref *l;
4780 struct lang_nocrossrefs *n;
4782 n = (struct lang_nocrossrefs *) xmalloc (sizeof *n);
4783 n->next = nocrossref_list;
4785 nocrossref_list = n;
4787 /* Set notice_all so that we get informed about all symbols. */
4788 link_info.notice_all = true;
4791 /* Overlay handling. We handle overlays with some static variables. */
4793 /* The overlay virtual address. */
4794 static etree_type *overlay_vma;
4796 /* The overlay load address. */
4797 static etree_type *overlay_lma;
4799 /* Whether nocrossrefs is set for this overlay. */
4800 static int overlay_nocrossrefs;
4802 /* An expression for the maximum section size seen so far. */
4803 static etree_type *overlay_max;
4805 /* A list of all the sections in this overlay. */
4807 struct overlay_list {
4808 struct overlay_list *next;
4809 lang_output_section_statement_type *os;
4812 static struct overlay_list *overlay_list;
4814 /* Start handling an overlay. */
4817 lang_enter_overlay (vma_expr, lma_expr, nocrossrefs)
4818 etree_type *vma_expr;
4819 etree_type *lma_expr;
4822 /* The grammar should prevent nested overlays from occurring. */
4823 ASSERT (overlay_vma == NULL
4824 && overlay_lma == NULL
4825 && overlay_list == NULL
4826 && overlay_max == NULL);
4828 overlay_vma = vma_expr;
4829 overlay_lma = lma_expr;
4830 overlay_nocrossrefs = nocrossrefs;
4833 /* Start a section in an overlay. We handle this by calling
4834 lang_enter_output_section_statement with the correct VMA and LMA. */
4837 lang_enter_overlay_section (name)
4840 struct overlay_list *n;
4843 lang_enter_output_section_statement (name, overlay_vma, normal_section,
4844 0, 0, 0, overlay_lma);
4846 /* If this is the first section, then base the VMA and LMA of future
4847 sections on this one. This will work correctly even if `.' is
4848 used in the addresses. */
4849 if (overlay_list == NULL)
4851 overlay_vma = exp_nameop (ADDR, name);
4852 overlay_lma = exp_nameop (LOADADDR, name);
4855 /* Remember the section. */
4856 n = (struct overlay_list *) xmalloc (sizeof *n);
4857 n->os = current_section;
4858 n->next = overlay_list;
4861 size = exp_nameop (SIZEOF, name);
4863 /* Adjust the LMA for the next section. */
4864 overlay_lma = exp_binop ('+', overlay_lma, size);
4866 /* Arrange to work out the maximum section end address. */
4867 if (overlay_max == NULL)
4870 overlay_max = exp_binop (MAX_K, overlay_max, size);
4873 /* Finish a section in an overlay. There isn't any special to do
4877 lang_leave_overlay_section (fill, phdrs)
4879 struct lang_output_section_phdr_list *phdrs;
4886 name = current_section->name;
4888 lang_leave_output_section_statement (fill, "*default*",
4889 phdrs, "*default*");
4891 /* Define the magic symbols. */
4893 clean = xmalloc (strlen (name) + 1);
4895 for (s1 = name; *s1 != '\0'; s1++)
4896 if (ISALNUM (*s1) || *s1 == '_')
4900 buf = xmalloc (strlen (clean) + sizeof "__load_start_");
4901 sprintf (buf, "__load_start_%s", clean);
4902 lang_add_assignment (exp_assop ('=', buf,
4903 exp_nameop (LOADADDR, name)));
4905 buf = xmalloc (strlen (clean) + sizeof "__load_stop_");
4906 sprintf (buf, "__load_stop_%s", clean);
4907 lang_add_assignment (exp_assop ('=', buf,
4909 exp_nameop (LOADADDR, name),
4910 exp_nameop (SIZEOF, name))));
4915 /* Finish an overlay. If there are any overlay wide settings, this
4916 looks through all the sections in the overlay and sets them. */
4919 lang_leave_overlay (fill, memspec, phdrs, lma_memspec)
4921 const char *memspec;
4922 struct lang_output_section_phdr_list *phdrs;
4923 const char *lma_memspec;
4925 lang_memory_region_type *region;
4926 lang_memory_region_type * default_region;
4927 lang_memory_region_type *lma_region;
4928 struct overlay_list *l;
4929 struct lang_nocrossref *nocrossref;
4931 default_region = lang_memory_region_lookup ("*default*");
4933 if (memspec == NULL)
4936 region = lang_memory_region_lookup (memspec);
4938 if (lma_memspec == NULL)
4941 lma_region = lang_memory_region_lookup (lma_memspec);
4948 struct overlay_list *next;
4950 if (fill != (fill_type *) 0 && l->os->fill == (fill_type *) 0)
4953 /* Assign a region to the sections, if one has been specified.
4954 Override the assignment of the default section, but not
4956 if (region != NULL &&
4957 (l->os->region == NULL ||
4958 l->os->region == default_region))
4959 l->os->region = region;
4961 /* We only set lma_region for the first overlay section, as
4962 subsequent overlay sections will have load_base set relative
4963 to the first section. Also, don't set lma_region if
4964 load_base is specified. FIXME: There should really be a test
4965 that `AT ( LDADDR )' doesn't conflict with `AT >LMA_REGION'
4966 rather than letting LDADDR simply override LMA_REGION. */
4967 if (lma_region != NULL && l->os->lma_region == NULL
4968 && l->next == NULL && l->os->load_base == NULL)
4969 l->os->lma_region = lma_region;
4971 if (phdrs != NULL && l->os->phdrs == NULL)
4972 l->os->phdrs = phdrs;
4974 if (overlay_nocrossrefs)
4976 struct lang_nocrossref *nc;
4978 nc = (struct lang_nocrossref *) xmalloc (sizeof *nc);
4979 nc->name = l->os->name;
4980 nc->next = nocrossref;
4989 if (nocrossref != NULL)
4990 lang_add_nocrossref (nocrossref);
4992 /* Update . for the end of the overlay. */
4993 lang_add_assignment (exp_assop ('=', ".",
4994 exp_binop ('+', overlay_vma, overlay_max)));
4998 overlay_nocrossrefs = 0;
4999 overlay_list = NULL;
5003 /* Version handling. This is only useful for ELF. */
5005 /* This global variable holds the version tree that we build. */
5007 struct bfd_elf_version_tree *lang_elf_version_info;
5010 lang_vers_match_lang_c (expr, sym)
5011 struct bfd_elf_version_expr *expr;
5014 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
5016 return fnmatch (expr->pattern, sym, 0) == 0;
5020 lang_vers_match_lang_cplusplus (expr, sym)
5021 struct bfd_elf_version_expr *expr;
5027 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
5030 alt_sym = cplus_demangle (sym, /* DMGL_NO_TPARAMS */ 0);
5033 /* cplus_demangle (also) returns NULL when it is not a C++ symbol.
5034 Should we early out false in this case? */
5035 result = fnmatch (expr->pattern, sym, 0) == 0;
5039 result = fnmatch (expr->pattern, alt_sym, 0) == 0;
5047 lang_vers_match_lang_java (expr, sym)
5048 struct bfd_elf_version_expr *expr;
5054 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
5057 alt_sym = cplus_demangle (sym, DMGL_JAVA);
5060 /* cplus_demangle (also) returns NULL when it is not a Java symbol.
5061 Should we early out false in this case? */
5062 result = fnmatch (expr->pattern, sym, 0) == 0;
5066 result = fnmatch (expr->pattern, alt_sym, 0) == 0;
5073 /* This is called for each variable name or match expression. */
5075 struct bfd_elf_version_expr *
5076 lang_new_vers_pattern (orig, new, lang)
5077 struct bfd_elf_version_expr *orig;
5081 struct bfd_elf_version_expr *ret;
5083 ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret);
5087 if (lang == NULL || strcasecmp (lang, "C") == 0)
5088 ret->match = lang_vers_match_lang_c;
5089 else if (strcasecmp (lang, "C++") == 0)
5090 ret->match = lang_vers_match_lang_cplusplus;
5091 else if (strcasecmp (lang, "Java") == 0)
5092 ret->match = lang_vers_match_lang_java;
5095 einfo (_("%X%P: unknown language `%s' in version information\n"),
5097 ret->match = lang_vers_match_lang_c;
5103 /* This is called for each set of variable names and match
5106 struct bfd_elf_version_tree *
5107 lang_new_vers_node (globals, locals)
5108 struct bfd_elf_version_expr *globals;
5109 struct bfd_elf_version_expr *locals;
5111 struct bfd_elf_version_tree *ret;
5113 ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret);
5117 ret->globals = globals;
5118 ret->locals = locals;
5120 ret->name_indx = (unsigned int) -1;
5125 /* This static variable keeps track of version indices. */
5127 static int version_index;
5129 /* This is called when we know the name and dependencies of the
5133 lang_register_vers_node (name, version, deps)
5135 struct bfd_elf_version_tree *version;
5136 struct bfd_elf_version_deps *deps;
5138 struct bfd_elf_version_tree *t, **pp;
5139 struct bfd_elf_version_expr *e1;
5144 if ((name[0] == '\0' && lang_elf_version_info != NULL)
5145 || (lang_elf_version_info && lang_elf_version_info->name[0] == '\0'))
5147 einfo (_("%X%P: anonymous version tag cannot be combined with other version tags\n"));
5151 /* Make sure this node has a unique name. */
5152 for (t = lang_elf_version_info; t != NULL; t = t->next)
5153 if (strcmp (t->name, name) == 0)
5154 einfo (_("%X%P: duplicate version tag `%s'\n"), name);
5156 /* Check the global and local match names, and make sure there
5157 aren't any duplicates. */
5159 for (e1 = version->globals; e1 != NULL; e1 = e1->next)
5161 for (t = lang_elf_version_info; t != NULL; t = t->next)
5163 struct bfd_elf_version_expr *e2;
5165 for (e2 = t->locals; e2 != NULL; e2 = e2->next)
5166 if (strcmp (e1->pattern, e2->pattern) == 0)
5167 einfo (_("%X%P: duplicate expression `%s' in version information\n"),
5172 for (e1 = version->locals; e1 != NULL; e1 = e1->next)
5174 for (t = lang_elf_version_info; t != NULL; t = t->next)
5176 struct bfd_elf_version_expr *e2;
5178 for (e2 = t->globals; e2 != NULL; e2 = e2->next)
5179 if (strcmp (e1->pattern, e2->pattern) == 0)
5180 einfo (_("%X%P: duplicate expression `%s' in version information\n"),
5185 version->deps = deps;
5186 version->name = name;
5187 if (name[0] != '\0')
5190 version->vernum = version_index;
5193 version->vernum = 0;
5195 for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next)
5200 /* This is called when we see a version dependency. */
5202 struct bfd_elf_version_deps *
5203 lang_add_vers_depend (list, name)
5204 struct bfd_elf_version_deps *list;
5207 struct bfd_elf_version_deps *ret;
5208 struct bfd_elf_version_tree *t;
5210 ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret);
5213 for (t = lang_elf_version_info; t != NULL; t = t->next)
5215 if (strcmp (t->name, name) == 0)
5217 ret->version_needed = t;
5222 einfo (_("%X%P: unable to find version dependency `%s'\n"), name);
5228 lang_do_version_exports_section ()
5230 struct bfd_elf_version_expr *greg = NULL, *lreg;
5232 LANG_FOR_EACH_INPUT_STATEMENT (is)
5234 asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports");
5241 len = bfd_section_size (is->the_bfd, sec);
5242 contents = xmalloc (len);
5243 if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len))
5244 einfo (_("%X%P: unable to read .exports section contents\n"), sec);
5247 while (p < contents + len)
5249 greg = lang_new_vers_pattern (greg, p, NULL);
5250 p = strchr (p, '\0') + 1;
5253 /* Do not free the contents, as we used them creating the regex. */
5255 /* Do not include this section in the link. */
5256 bfd_set_section_flags (is->the_bfd, sec,
5257 bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE);
5260 lreg = lang_new_vers_pattern (NULL, "*", NULL);
5261 lang_register_vers_node (command_line.version_exports_section,
5262 lang_new_vers_node (greg, lreg), NULL);
5266 lang_add_unique (name)
5269 struct unique_sections *ent;
5271 for (ent = unique_section_list; ent; ent = ent->next)
5272 if (strcmp (ent->name, name) == 0)
5275 ent = (struct unique_sections *) xmalloc (sizeof *ent);
5276 ent->name = xstrdup (name);
5277 ent->next = unique_section_list;
5278 unique_section_list = ent;