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"
45 static lang_statement_union_type *new_statement PARAMS ((enum statement_enum,
47 lang_statement_list_type *));
50 static struct obstack stat_obstack;
52 #define obstack_chunk_alloc xmalloc
53 #define obstack_chunk_free free
54 static const char *startup_file;
55 static lang_statement_list_type input_file_chain;
56 static boolean placed_commons = false;
57 static lang_output_section_statement_type *default_common_section;
58 static boolean map_option_f;
59 static bfd_vma print_dot;
60 static lang_input_statement_type *first_file;
61 static const char *current_target;
62 static const char *output_target;
63 static lang_statement_list_type statement_list;
64 static struct lang_phdr *lang_phdr_list;
66 static void lang_for_each_statement_worker
67 PARAMS ((void (*) (lang_statement_union_type *),
68 lang_statement_union_type *));
69 static lang_input_statement_type *new_afile
70 PARAMS ((const char *, lang_input_file_enum_type, const char *, boolean));
71 static lang_memory_region_type *lang_memory_default PARAMS ((asection *));
72 static void lang_map_flags PARAMS ((flagword));
73 static void init_os PARAMS ((lang_output_section_statement_type *));
74 static void exp_init_os PARAMS ((etree_type *));
75 static void section_already_linked PARAMS ((bfd *, asection *, PTR));
76 static struct bfd_hash_entry *already_linked_newfunc
77 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
78 static void already_linked_table_init PARAMS ((void));
79 static void already_linked_table_free PARAMS ((void));
80 static boolean wildcardp PARAMS ((const char *));
81 static lang_statement_union_type *wild_sort
82 PARAMS ((lang_wild_statement_type *, lang_input_statement_type *,
84 static void output_section_callback
85 PARAMS ((lang_wild_statement_type *, asection *,
86 lang_input_statement_type *, PTR));
87 static lang_input_statement_type *lookup_name PARAMS ((const char *));
88 static void load_symbols
89 PARAMS ((lang_input_statement_type *, lang_statement_list_type *));
91 PARAMS ((lang_wild_statement_type *, const char *, const char *,
92 const char *, lang_output_section_statement_type *));
93 static bfd *open_output PARAMS ((const char *));
94 static void ldlang_open_output PARAMS ((lang_statement_union_type *));
95 static void open_input_bfds PARAMS ((lang_statement_union_type *, boolean));
96 static void lang_reasonable_defaults PARAMS ((void));
97 static void lang_place_undefineds PARAMS ((void));
98 static void map_input_to_output_sections
99 PARAMS ((lang_statement_union_type *, const char *,
100 lang_output_section_statement_type *));
101 static void print_output_section_statement
102 PARAMS ((lang_output_section_statement_type *));
103 static void print_assignment
104 PARAMS ((lang_assignment_statement_type *,
105 lang_output_section_statement_type *));
106 static void print_input_statement PARAMS ((lang_input_statement_type *));
107 static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR));
108 static void print_input_section PARAMS ((lang_input_section_type *));
109 static void print_fill_statement PARAMS ((lang_fill_statement_type *));
110 static void print_data_statement PARAMS ((lang_data_statement_type *));
111 static void print_address_statement PARAMS ((lang_address_statement_type *));
112 static void print_reloc_statement PARAMS ((lang_reloc_statement_type *));
113 static void print_padding_statement PARAMS ((lang_padding_statement_type *));
114 static void print_wild_statement
115 PARAMS ((lang_wild_statement_type *, lang_output_section_statement_type *));
116 static void print_group
117 PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *));
118 static void print_statement
119 PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *));
120 static void print_statement_list
121 PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *));
122 static void print_statements PARAMS ((void));
123 static bfd_vma insert_pad
124 PARAMS ((lang_statement_union_type **, fill_type,
125 unsigned int, asection *, bfd_vma));
126 static bfd_vma size_input_section
127 PARAMS ((lang_statement_union_type **, lang_output_section_statement_type *,
128 fill_type, bfd_vma, boolean));
129 static void lang_finish PARAMS ((void));
130 static void ignore_bfd_errors PARAMS ((const char *, ...));
131 static void record_bfd_errors PARAMS ((const char *, ...));
132 static void lang_check PARAMS ((void));
133 static void lang_common PARAMS ((void));
134 static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
135 static void lang_place_orphans PARAMS ((void));
136 static int topower PARAMS ((int));
137 static void lang_set_startof PARAMS ((void));
138 static void reset_memory_regions PARAMS ((void));
139 static void gc_section_callback
140 PARAMS ((lang_wild_statement_type *, asection *,
141 lang_input_statement_type *, PTR));
142 static void lang_record_phdrs PARAMS ((void));
143 static void lang_gc_wild
144 PARAMS ((lang_wild_statement_type *, const char *, const char *));
145 static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *));
146 static void lang_gc_sections PARAMS ((void));
147 static int lang_vers_match_lang_c
148 PARAMS ((struct bfd_elf_version_expr *, const char *));
149 static int lang_vers_match_lang_cplusplus
150 PARAMS ((struct bfd_elf_version_expr *, const char *));
151 static int lang_vers_match_lang_java
152 PARAMS ((struct bfd_elf_version_expr *, const char *));
153 static void lang_do_version_exports_section PARAMS ((void));
154 static void lang_check_section_addresses PARAMS ((void));
155 static void os_region_check
156 PARAMS ((lang_output_section_statement_type *,
157 struct memory_region_struct *, etree_type *, bfd_vma));
159 typedef void (*callback_t) PARAMS ((lang_wild_statement_type *,
160 asection *, lang_input_statement_type *,
162 static void walk_wild
163 PARAMS ((lang_wild_statement_type *, const char *, const char *,
165 static void walk_wild_section
166 PARAMS ((lang_wild_statement_type *, const char *,
167 lang_input_statement_type *, callback_t, PTR));
168 static void walk_wild_file
169 PARAMS ((lang_wild_statement_type *, const char *,
170 lang_input_statement_type *, callback_t, PTR));
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 boolean entry_from_cmdline;
186 boolean lang_has_input_file = false;
187 boolean had_output_filename = false;
188 boolean lang_float_flag = false;
189 boolean delete_output_file_on_failure = false;
190 struct lang_nocrossrefs *nocrossref_list;
191 struct unique_sections *unique_section_list;
193 etree_type *base; /* Relocation base - or null */
195 #if defined(__STDC__) || defined(ALMOST_STDC)
196 #define cat(a,b) a##b
198 #define cat(a,b) a/**/b
201 /* Don't beautify the line below with "innocent" whitespace, it breaks the K&R C preprocessor! */
202 #define new_stat(x, y) (cat (x,_type)*) new_statement (cat (x,_enum), sizeof (cat (x,_type)), y)
204 #define outside_section_address(q) ((q)->output_offset + (q)->output_section->vma)
206 #define outside_symbol_address(q) ((q)->value + outside_section_address (q->section))
208 #define SECTION_NAME_MAP_LENGTH (16)
214 return obstack_alloc (&stat_obstack, size);
218 unique_section_p (secnam)
221 struct unique_sections *unam;
223 for (unam = unique_section_list; unam; unam = unam->next)
224 if (wildcardp (unam->name)
225 ? fnmatch (unam->name, secnam, 0) == 0
226 : strcmp (unam->name, secnam) == 0)
234 /* Generic traversal routines for finding matching sections. */
237 walk_wild_section (ptr, section, file, callback, data)
238 lang_wild_statement_type *ptr;
240 lang_input_statement_type *file;
244 /* Don't process sections from files which were excluded. */
245 if (ptr->exclude_filename_list != NULL)
247 struct name_list *list_tmp;
248 for (list_tmp = ptr->exclude_filename_list; list_tmp; list_tmp = list_tmp->next)
252 if (wildcardp (list_tmp->name))
253 match = fnmatch (list_tmp->name, file->filename, 0) == 0 ? true : false;
255 match = strcmp (list_tmp->name, file->filename) == 0 ? true : false;
262 if (file->just_syms_flag == false)
264 register asection *s;
265 boolean wildcard = false;
268 wildcard = wildcardp (section);
270 for (s = file->the_bfd->sections; s != NULL; s = s->next)
273 const char *sname = bfd_get_section_name (file->the_bfd, s);
278 match = fnmatch (section, sname, 0) == 0 ? true : false;
280 match = strcmp (section, sname) == 0 ? true : false;
282 /* If this is a wild-card output section statement, exclude
283 sections that match UNIQUE_SECTION_LIST. */
284 if (match && (data == NULL || !unique_section_p (sname)))
285 (*callback) (ptr, s, file, data);
290 /* Handle a wild statement for a single file F. */
293 walk_wild_file (s, section, f, callback, data)
294 lang_wild_statement_type *s;
296 lang_input_statement_type *f;
300 if (f->the_bfd == NULL
301 || ! bfd_check_format (f->the_bfd, bfd_archive))
302 walk_wild_section (s, section, f, callback, data);
307 /* This is an archive file. We must map each member of the
308 archive separately. */
309 member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
310 while (member != NULL)
312 /* When lookup_name is called, it will call the add_symbols
313 entry point for the archive. For each element of the
314 archive which is included, BFD will call ldlang_add_file,
315 which will set the usrdata field of the member to the
316 lang_input_statement. */
317 if (member->usrdata != NULL)
319 walk_wild_section (s, section,
320 (lang_input_statement_type *) member->usrdata,
324 member = bfd_openr_next_archived_file (f->the_bfd, member);
330 walk_wild (s, section, file, callback, data)
331 lang_wild_statement_type *s;
337 if (file == (char *) NULL)
339 /* Perform the iteration over all files in the list. */
340 LANG_FOR_EACH_INPUT_STATEMENT (f)
342 walk_wild_file (s, section, f, callback, data);
345 else if (wildcardp (file))
347 LANG_FOR_EACH_INPUT_STATEMENT (f)
349 if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
350 walk_wild_file (s, section, f, callback, data);
355 lang_input_statement_type *f;
357 /* Perform the iteration over a single file. */
358 f = lookup_name (file);
359 walk_wild_file (s, section, f, callback, data);
363 /* lang_for_each_statement walks the parse tree and calls the provided
364 function for each node. */
367 lang_for_each_statement_worker (func, s)
368 void (*func) PARAMS ((lang_statement_union_type *));
369 lang_statement_union_type *s;
371 for (; s != (lang_statement_union_type *) NULL; s = s->next)
375 switch (s->header.type)
377 case lang_constructors_statement_enum:
378 lang_for_each_statement_worker (func, constructor_list.head);
380 case lang_output_section_statement_enum:
381 lang_for_each_statement_worker
383 s->output_section_statement.children.head);
385 case lang_wild_statement_enum:
386 lang_for_each_statement_worker
388 s->wild_statement.children.head);
390 case lang_group_statement_enum:
391 lang_for_each_statement_worker (func,
392 s->group_statement.children.head);
394 case lang_data_statement_enum:
395 case lang_reloc_statement_enum:
396 case lang_object_symbols_statement_enum:
397 case lang_output_statement_enum:
398 case lang_target_statement_enum:
399 case lang_input_section_enum:
400 case lang_input_statement_enum:
401 case lang_assignment_statement_enum:
402 case lang_padding_statement_enum:
403 case lang_address_statement_enum:
404 case lang_fill_statement_enum:
414 lang_for_each_statement (func)
415 void (*func) PARAMS ((lang_statement_union_type *));
417 lang_for_each_statement_worker (func, statement_list.head);
420 /*----------------------------------------------------------------------*/
423 lang_list_init (list)
424 lang_statement_list_type *list;
426 list->head = (lang_statement_union_type *) NULL;
427 list->tail = &list->head;
430 /* Build a new statement node for the parse tree. */
432 static lang_statement_union_type *
433 new_statement (type, size, list)
434 enum statement_enum type;
436 lang_statement_list_type *list;
438 lang_statement_union_type *new = (lang_statement_union_type *)
441 new->header.type = type;
442 new->header.next = (lang_statement_union_type *) NULL;
443 lang_statement_append (list, new, &new->header.next);
447 /* Build a new input file node for the language. There are several
448 ways in which we treat an input file, eg, we only look at symbols,
449 or prefix it with a -l etc.
451 We can be supplied with requests for input files more than once;
452 they may, for example be split over serveral lines like foo.o(.text)
453 foo.o(.data) etc, so when asked for a file we check that we havn't
454 got it already so we don't duplicate the bfd. */
456 static lang_input_statement_type *
457 new_afile (name, file_type, target, add_to_list)
459 lang_input_file_enum_type file_type;
463 lang_input_statement_type *p;
466 p = new_stat (lang_input_statement, stat_ptr);
469 p = ((lang_input_statement_type *)
470 stat_alloc (sizeof (lang_input_statement_type)));
471 p->header.next = NULL;
474 lang_has_input_file = true;
478 case lang_input_file_is_symbols_only_enum:
480 p->is_archive = false;
482 p->local_sym_name = name;
483 p->just_syms_flag = true;
484 p->search_dirs_flag = false;
486 case lang_input_file_is_fake_enum:
488 p->is_archive = false;
490 p->local_sym_name = name;
491 p->just_syms_flag = false;
492 p->search_dirs_flag = false;
494 case lang_input_file_is_l_enum:
495 p->is_archive = true;
498 p->local_sym_name = concat ("-l", name, (const char *) NULL);
499 p->just_syms_flag = false;
500 p->search_dirs_flag = true;
502 case lang_input_file_is_marker_enum:
504 p->is_archive = false;
506 p->local_sym_name = name;
507 p->just_syms_flag = false;
508 p->search_dirs_flag = true;
510 case lang_input_file_is_search_file_enum:
512 p->is_archive = false;
514 p->local_sym_name = name;
515 p->just_syms_flag = false;
516 p->search_dirs_flag = true;
518 case lang_input_file_is_file_enum:
520 p->is_archive = false;
522 p->local_sym_name = name;
523 p->just_syms_flag = false;
524 p->search_dirs_flag = false;
529 p->the_bfd = (bfd *) NULL;
530 p->asymbols = (asymbol **) NULL;
531 p->next_real_file = (lang_statement_union_type *) NULL;
532 p->next = (lang_statement_union_type *) NULL;
534 p->dynamic = config.dynamic_link;
535 p->whole_archive = whole_archive;
537 lang_statement_append (&input_file_chain,
538 (lang_statement_union_type *) p,
543 lang_input_statement_type *
544 lang_add_input_file (name, file_type, target)
546 lang_input_file_enum_type file_type;
549 lang_has_input_file = true;
550 return new_afile (name, file_type, target, true);
553 /* Build enough state so that the parser can build its tree. */
558 obstack_begin (&stat_obstack, 1000);
560 stat_ptr = &statement_list;
562 lang_list_init (stat_ptr);
564 lang_list_init (&input_file_chain);
565 lang_list_init (&lang_output_section_statement);
566 lang_list_init (&file_chain);
567 first_file = lang_add_input_file ((char *) NULL,
568 lang_input_file_is_marker_enum,
571 lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
573 abs_output_section->bfd_section = bfd_abs_section_ptr;
577 /*----------------------------------------------------------------------
578 A region is an area of memory declared with the
579 MEMORY { name:org=exp, len=exp ... }
582 We maintain a list of all the regions here.
584 If no regions are specified in the script, then the default is used
585 which is created when looked up to be the entire data space. */
587 static lang_memory_region_type *lang_memory_region_list;
588 static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list;
590 lang_memory_region_type *
591 lang_memory_region_lookup (name)
592 const char *const name;
594 lang_memory_region_type *p;
596 for (p = lang_memory_region_list;
597 p != (lang_memory_region_type *) NULL;
600 if (strcmp (p->name, name) == 0)
607 /* This code used to always use the first region in the list as the
608 default region. I changed it to instead use a region
609 encompassing all of memory as the default region. This permits
610 NOLOAD sections to work reasonably without requiring a region.
611 People should specify what region they mean, if they really want
613 if (strcmp (name, "*default*") == 0)
615 if (lang_memory_region_list != (lang_memory_region_type *) NULL)
617 return lang_memory_region_list;
623 lang_memory_region_type *new =
624 (lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type));
626 new->name = buystring (name);
627 new->next = (lang_memory_region_type *) NULL;
629 *lang_memory_region_list_tail = new;
630 lang_memory_region_list_tail = &new->next;
634 new->length = ~(bfd_size_type) 0;
636 new->had_full_message = false;
642 static lang_memory_region_type *
643 lang_memory_default (section)
646 lang_memory_region_type *p;
648 flagword sec_flags = section->flags;
650 /* Override SEC_DATA to mean a writable section. */
651 if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC)
652 sec_flags |= SEC_DATA;
654 for (p = lang_memory_region_list;
655 p != (lang_memory_region_type *) NULL;
658 if ((p->flags & sec_flags) != 0
659 && (p->not_flags & sec_flags) == 0)
664 return lang_memory_region_lookup ("*default*");
667 lang_output_section_statement_type *
668 lang_output_section_find (name)
669 const char *const name;
671 lang_statement_union_type *u;
672 lang_output_section_statement_type *lookup;
674 for (u = lang_output_section_statement.head;
675 u != (lang_statement_union_type *) NULL;
678 lookup = &u->output_section_statement;
679 if (strcmp (name, lookup->name) == 0)
684 return (lang_output_section_statement_type *) NULL;
687 lang_output_section_statement_type *
688 lang_output_section_statement_lookup (name)
689 const char *const name;
691 lang_output_section_statement_type *lookup;
693 lookup = lang_output_section_find (name);
694 if (lookup == (lang_output_section_statement_type *) NULL)
697 lookup = (lang_output_section_statement_type *)
698 new_stat (lang_output_section_statement, stat_ptr);
699 lookup->region = (lang_memory_region_type *) NULL;
700 lookup->lma_region = (lang_memory_region_type *) NULL;
702 lookup->block_value = 1;
705 lookup->next = (lang_statement_union_type *) NULL;
706 lookup->bfd_section = (asection *) NULL;
707 lookup->processed = false;
708 lookup->sectype = normal_section;
709 lookup->addr_tree = (etree_type *) NULL;
710 lang_list_init (&lookup->children);
712 lookup->memspec = (const char *) NULL;
714 lookup->subsection_alignment = -1;
715 lookup->section_alignment = -1;
716 lookup->load_base = (union etree_union *) NULL;
717 lookup->phdrs = NULL;
719 lang_statement_append (&lang_output_section_statement,
720 (lang_statement_union_type *) lookup,
727 lang_map_flags (flag)
730 if (flag & SEC_ALLOC)
736 if (flag & SEC_READONLY)
749 lang_memory_region_type *m;
751 minfo (_("\nMemory Configuration\n\n"));
752 fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
753 _("Name"), _("Origin"), _("Length"), _("Attributes"));
755 for (m = lang_memory_region_list;
756 m != (lang_memory_region_type *) NULL;
762 fprintf (config.map_file, "%-16s ", m->name);
764 sprintf_vma (buf, m->origin);
765 minfo ("0x%s ", buf);
773 minfo ("0x%V", m->length);
774 if (m->flags || m->not_flags)
782 lang_map_flags (m->flags);
788 lang_map_flags (m->not_flags);
795 fprintf (config.map_file, _("\nLinker script and memory map\n\n"));
800 /* Initialize an output section. */
804 lang_output_section_statement_type *s;
806 section_userdata_type *new;
808 if (s->bfd_section != NULL)
811 if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
812 einfo (_("%P%F: Illegal use of `%s' section"), DISCARD_SECTION_NAME);
814 new = ((section_userdata_type *)
815 stat_alloc (sizeof (section_userdata_type)));
817 s->bfd_section = bfd_get_section_by_name (output_bfd, s->name);
818 if (s->bfd_section == (asection *) NULL)
819 s->bfd_section = bfd_make_section (output_bfd, s->name);
820 if (s->bfd_section == (asection *) NULL)
822 einfo (_("%P%F: output format %s cannot represent section called %s\n"),
823 output_bfd->xvec->name, s->name);
825 s->bfd_section->output_section = s->bfd_section;
827 /* We initialize an output sections output offset to minus its own
828 vma to allow us to output a section through itself. */
829 s->bfd_section->output_offset = 0;
830 get_userdata (s->bfd_section) = (PTR) new;
832 /* If there is a base address, make sure that any sections it might
833 mention are initialized. */
834 if (s->addr_tree != NULL)
835 exp_init_os (s->addr_tree);
838 /* Make sure that all output sections mentioned in an expression are
845 switch (exp->type.node_class)
848 exp_init_os (exp->assign.src);
852 exp_init_os (exp->binary.lhs);
853 exp_init_os (exp->binary.rhs);
857 exp_init_os (exp->trinary.cond);
858 exp_init_os (exp->trinary.lhs);
859 exp_init_os (exp->trinary.rhs);
863 exp_init_os (exp->unary.child);
867 switch (exp->type.node_code)
873 lang_output_section_statement_type *os;
875 os = lang_output_section_find (exp->name.name);
876 if (os != NULL && os->bfd_section == NULL)
887 /* Sections marked with the SEC_LINK_ONCE flag should only be linked
888 once into the output. This routine checks each section, and
889 arrange to discard it if a section of the same name has already
890 been linked. If the section has COMDAT information, then it uses
891 that to decide whether the section should be included. This code
892 assumes that all relevant sections have the SEC_LINK_ONCE flag set;
893 that is, it does not depend solely upon the section name.
894 section_already_linked is called via bfd_map_over_sections. */
896 /* This is the shape of the elements inside the already_linked hash
897 table. It maps a name onto a list of already_linked elements with
898 the same name. It's possible to get more than one element in a
899 list if the COMDAT sections have different names. */
901 struct already_linked_hash_entry
903 struct bfd_hash_entry root;
904 struct already_linked *entry;
907 struct already_linked
909 struct already_linked *next;
913 /* The hash table. */
915 static struct bfd_hash_table already_linked_table;
918 section_already_linked (abfd, sec, data)
923 lang_input_statement_type *entry = (lang_input_statement_type *) data;
926 struct already_linked *l;
927 struct already_linked_hash_entry *already_linked_list;
929 /* If we are only reading symbols from this object, then we want to
930 discard all sections. */
931 if (entry->just_syms_flag)
933 sec->output_section = bfd_abs_section_ptr;
934 sec->output_offset = sec->vma;
938 flags = bfd_get_section_flags (abfd, sec);
940 if ((flags & SEC_LINK_ONCE) == 0)
943 /* FIXME: When doing a relocatable link, we may have trouble
944 copying relocations in other sections that refer to local symbols
945 in the section being discarded. Those relocations will have to
946 be converted somehow; as of this writing I'm not sure that any of
947 the backends handle that correctly.
949 It is tempting to instead not discard link once sections when
950 doing a relocatable link (technically, they should be discarded
951 whenever we are building constructors). However, that fails,
952 because the linker winds up combining all the link once sections
953 into a single large link once section, which defeats the purpose
954 of having link once sections in the first place.
956 Also, not merging link once sections in a relocatable link
957 causes trouble for MIPS ELF, which relies in link once semantics
958 to handle the .reginfo section correctly. */
960 name = bfd_get_section_name (abfd, sec);
962 already_linked_list =
963 ((struct already_linked_hash_entry *)
964 bfd_hash_lookup (&already_linked_table, name, true, false));
966 for (l = already_linked_list->entry; l != NULL; l = l->next)
968 if (sec->comdat == NULL
969 || l->sec->comdat == NULL
970 || strcmp (sec->comdat->name, l->sec->comdat->name) == 0)
972 /* The section has already been linked. See if we should
974 switch (flags & SEC_LINK_DUPLICATES)
979 case SEC_LINK_DUPLICATES_DISCARD:
982 case SEC_LINK_DUPLICATES_ONE_ONLY:
983 if (sec->comdat == NULL)
984 einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"),
987 einfo (_("%P: %B: warning: ignoring duplicate `%s' section symbol `%s'\n"),
988 abfd, name, sec->comdat->name);
991 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
992 /* FIXME: We should really dig out the contents of both
993 sections and memcmp them. The COFF/PE spec says that
994 the Microsoft linker does not implement this
995 correctly, so I'm not going to bother doing it
998 case SEC_LINK_DUPLICATES_SAME_SIZE:
999 if (bfd_section_size (abfd, sec)
1000 != bfd_section_size (l->sec->owner, l->sec))
1001 einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"),
1006 /* Set the output_section field so that wild_doit does not
1007 create a lang_input_section structure for this section.
1008 Since there might be a symbol in the section being
1009 discarded, we must retain a pointer to the section which
1010 we are really going to use. */
1011 sec->output_section = bfd_abs_section_ptr;
1012 sec->kept_section = l->sec;
1018 /* This is the first section with this name. Record it. Allocate
1019 the memory from the same obstack as the hash table is kept in. */
1021 l = ((struct already_linked *)
1022 bfd_hash_allocate (&already_linked_table, sizeof *l));
1025 l->next = already_linked_list->entry;
1026 already_linked_list->entry = l;
1029 /* Support routines for the hash table used by section_already_linked,
1030 initialize the table, fill in an entry and remove the table. */
1032 static struct bfd_hash_entry *
1033 already_linked_newfunc (entry, table, string)
1034 struct bfd_hash_entry *entry ATTRIBUTE_UNUSED;
1035 struct bfd_hash_table *table;
1036 const char *string ATTRIBUTE_UNUSED;
1038 struct already_linked_hash_entry *ret =
1039 bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry));
1043 return (struct bfd_hash_entry *) ret;
1047 already_linked_table_init ()
1049 if (! bfd_hash_table_init_n (&already_linked_table,
1050 already_linked_newfunc,
1052 einfo (_("%P%F: Failed to create hash table\n"));
1056 already_linked_table_free ()
1058 bfd_hash_table_free (&already_linked_table);
1061 /* The wild routines.
1063 These expand statements like *(.text) and foo.o to a list of
1064 explicit actions, like foo.o(.text), bar.o(.text) and
1065 foo.o(.text, .data). */
1067 /* Return true if the PATTERN argument is a wildcard pattern.
1068 Although backslashes are treated specially if a pattern contains
1069 wildcards, we do not consider the mere presence of a backslash to
1070 be enough to cause the the pattern to be treated as a wildcard.
1071 That lets us handle DOS filenames more naturally. */
1075 const char *pattern;
1079 for (s = pattern; *s != '\0'; ++s)
1087 /* Add SECTION to the output section OUTPUT. Do this by creating a
1088 lang_input_section statement which is placed at PTR. FILE is the
1089 input file which holds SECTION. */
1092 wild_doit (ptr, section, output, file)
1093 lang_statement_list_type *ptr;
1095 lang_output_section_statement_type *output;
1096 lang_input_statement_type *file;
1101 flags = bfd_get_section_flags (section->owner, section);
1105 /* If we are doing a final link, discard sections marked with
1107 if (! link_info.relocateable
1108 && (flags & SEC_EXCLUDE) != 0)
1111 /* Discard input sections which are assigned to a section named
1112 DISCARD_SECTION_NAME. */
1113 if (strcmp (output->name, DISCARD_SECTION_NAME) == 0)
1116 /* Discard debugging sections if we are stripping debugging
1118 if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
1119 && (flags & SEC_DEBUGGING) != 0)
1124 if (section->output_section == NULL)
1126 /* This prevents future calls from assigning this section. */
1127 section->output_section = bfd_abs_section_ptr;
1132 if (section->output_section == NULL)
1135 lang_input_section_type *new;
1138 if (output->bfd_section == NULL)
1146 /* Add a section reference to the list. */
1147 new = new_stat (lang_input_section, ptr);
1149 new->section = section;
1151 section->output_section = output->bfd_section;
1153 flags = section->flags;
1155 /* We don't copy the SEC_NEVER_LOAD flag from an input section
1156 to an output section, because we want to be able to include a
1157 SEC_NEVER_LOAD section in the middle of an otherwise loaded
1158 section (I don't know why we want to do this, but we do).
1159 build_link_order in ldwrite.c handles this case by turning
1160 the embedded SEC_NEVER_LOAD section into a fill. */
1162 flags &= ~ SEC_NEVER_LOAD;
1164 /* If final link, don't copy the SEC_LINK_ONCE flags, they've
1165 already been processed. One reason to do this is that on pe
1166 format targets, .text$foo sections go into .text and it's odd
1167 to see .text with SEC_LINK_ONCE set. */
1169 if (! link_info.relocateable)
1170 flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
1172 /* If this is not the first input section, and the SEC_READONLY
1173 flag is not currently set, then don't set it just because the
1174 input section has it set. */
1176 if (! first && (section->output_section->flags & SEC_READONLY) == 0)
1177 flags &= ~ SEC_READONLY;
1179 /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */
1181 && ((section->output_section->flags & (SEC_MERGE | SEC_STRINGS))
1182 != (flags & (SEC_MERGE | SEC_STRINGS))
1183 || ((flags & SEC_MERGE)
1184 && section->output_section->entsize != section->entsize)))
1186 section->output_section->flags &= ~ (SEC_MERGE | SEC_STRINGS);
1187 flags &= ~ (SEC_MERGE | SEC_STRINGS);
1190 section->output_section->flags |= flags;
1192 if (flags & SEC_MERGE)
1193 section->output_section->entsize = section->entsize;
1195 /* If SEC_READONLY is not set in the input section, then clear
1196 it from the output section. */
1197 if ((section->flags & SEC_READONLY) == 0)
1198 section->output_section->flags &= ~SEC_READONLY;
1200 switch (output->sectype)
1202 case normal_section:
1207 case overlay_section:
1208 output->bfd_section->flags &= ~SEC_ALLOC;
1210 case noload_section:
1211 output->bfd_section->flags &= ~SEC_LOAD;
1212 output->bfd_section->flags |= SEC_NEVER_LOAD;
1216 /* Copy over SEC_SMALL_DATA. */
1217 if (section->flags & SEC_SMALL_DATA)
1218 section->output_section->flags |= SEC_SMALL_DATA;
1220 if (section->alignment_power > output->bfd_section->alignment_power)
1221 output->bfd_section->alignment_power = section->alignment_power;
1223 /* If supplied an aligment, then force it. */
1224 if (output->section_alignment != -1)
1225 output->bfd_section->alignment_power = output->section_alignment;
1227 if (section->flags & SEC_BLOCK)
1229 section->output_section->flags |= SEC_BLOCK;
1230 /* FIXME: This value should really be obtained from the bfd... */
1231 output->block_value = 128;
1236 /* Handle wildcard sorting. This returns the lang_input_section which
1237 should follow the one we are going to create for SECTION and FILE,
1238 based on the sorting requirements of WILD. It returns NULL if the
1239 new section should just go at the end of the current list. */
1241 static lang_statement_union_type *
1242 wild_sort (wild, file, section)
1243 lang_wild_statement_type *wild;
1244 lang_input_statement_type *file;
1247 const char *section_name;
1248 lang_statement_union_type *l;
1250 if (! wild->filenames_sorted && ! wild->sections_sorted)
1253 section_name = bfd_get_section_name (file->the_bfd, section);
1254 for (l = wild->children.head; l != NULL; l = l->next)
1256 lang_input_section_type *ls;
1258 if (l->header.type != lang_input_section_enum)
1260 ls = &l->input_section;
1262 /* Sorting by filename takes precedence over sorting by section
1265 if (wild->filenames_sorted)
1267 const char *fn, *ln;
1271 /* The PE support for the .idata section as generated by
1272 dlltool assumes that files will be sorted by the name of
1273 the archive and then the name of the file within the
1276 if (file->the_bfd != NULL
1277 && bfd_my_archive (file->the_bfd) != NULL)
1279 fn = bfd_get_filename (bfd_my_archive (file->the_bfd));
1284 fn = file->filename;
1288 if (ls->ifile->the_bfd != NULL
1289 && bfd_my_archive (ls->ifile->the_bfd) != NULL)
1291 ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd));
1296 ln = ls->ifile->filename;
1300 i = strcmp (fn, ln);
1309 fn = file->filename;
1311 ln = ls->ifile->filename;
1313 i = strcmp (fn, ln);
1321 /* Here either the files are not sorted by name, or we are
1322 looking at the sections for this file. */
1324 if (wild->sections_sorted)
1326 if (strcmp (section_name,
1327 bfd_get_section_name (ls->ifile->the_bfd,
1337 /* Expand a wild statement for a particular FILE. SECTION may be
1338 NULL, in which case it is a wild card. */
1341 output_section_callback (ptr, section, file, output)
1342 lang_wild_statement_type *ptr;
1344 lang_input_statement_type *file;
1347 lang_statement_union_type *before;
1349 /* If the wild pattern was marked KEEP, the member sections
1350 should be as well. */
1351 if (ptr->keep_sections)
1352 section->flags |= SEC_KEEP;
1354 before = wild_sort (ptr, file, section);
1356 /* Here BEFORE points to the lang_input_section which
1357 should follow the one we are about to add. If BEFORE
1358 is NULL, then the section should just go at the end
1359 of the current list. */
1362 wild_doit (&ptr->children, section,
1363 (lang_output_section_statement_type *) output,
1367 lang_statement_list_type list;
1368 lang_statement_union_type **pp;
1370 lang_list_init (&list);
1371 wild_doit (&list, section,
1372 (lang_output_section_statement_type *) output,
1375 /* If we are discarding the section, LIST.HEAD will
1377 if (list.head != NULL)
1379 ASSERT (list.head->next == NULL);
1381 for (pp = &ptr->children.head;
1384 ASSERT (*pp != NULL);
1386 list.head->next = *pp;
1392 /* This is passed a file name which must have been seen already and
1393 added to the statement tree. We will see if it has been opened
1394 already and had its symbols read. If not then we'll read it. */
1396 static lang_input_statement_type *
1400 lang_input_statement_type *search;
1402 for (search = (lang_input_statement_type *) input_file_chain.head;
1403 search != (lang_input_statement_type *) NULL;
1404 search = (lang_input_statement_type *) search->next_real_file)
1406 if (search->filename == (char *) NULL && name == (char *) NULL)
1408 if (search->filename != (char *) NULL
1409 && name != (char *) NULL
1410 && strcmp (search->filename, name) == 0)
1414 if (search == (lang_input_statement_type *) NULL)
1415 search = new_afile (name, lang_input_file_is_file_enum, default_target,
1418 /* If we have already added this file, or this file is not real
1419 (FIXME: can that ever actually happen?) or the name is NULL
1420 (FIXME: can that ever actually happen?) don't add this file. */
1423 || search->filename == (const char *) NULL)
1426 load_symbols (search, (lang_statement_list_type *) NULL);
1431 /* Get the symbols for an input file. */
1434 load_symbols (entry, place)
1435 lang_input_statement_type *entry;
1436 lang_statement_list_type *place;
1443 ldfile_open_file (entry);
1445 if (! bfd_check_format (entry->the_bfd, bfd_archive)
1446 && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching))
1449 lang_statement_list_type *hold;
1451 err = bfd_get_error ();
1452 if (err == bfd_error_file_ambiguously_recognized)
1456 einfo (_("%B: file not recognized: %E\n"), entry->the_bfd);
1457 einfo (_("%B: matching formats:"), entry->the_bfd);
1458 for (p = matching; *p != NULL; p++)
1462 else if (err != bfd_error_file_not_recognized
1464 einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd);
1466 bfd_close (entry->the_bfd);
1467 entry->the_bfd = NULL;
1469 /* See if the emulation has some special knowledge. */
1471 if (ldemul_unrecognized_file (entry))
1474 /* Try to interpret the file as a linker script. */
1476 ldfile_open_command_file (entry->filename);
1481 ldfile_assumed_script = true;
1482 parser_input = input_script;
1484 ldfile_assumed_script = false;
1491 if (ldemul_recognized_file (entry))
1494 /* We don't call ldlang_add_file for an archive. Instead, the
1495 add_symbols entry point will call ldlang_add_file, via the
1496 add_archive_element callback, for each element of the archive
1498 switch (bfd_get_format (entry->the_bfd))
1504 ldlang_add_file (entry);
1505 if (trace_files || trace_file_tries)
1506 info_msg ("%I\n", entry);
1510 if (entry->whole_archive)
1512 bfd *member = bfd_openr_next_archived_file (entry->the_bfd,
1514 while (member != NULL)
1516 if (! bfd_check_format (member, bfd_object))
1517 einfo (_("%F%B: object %B in archive is not object\n"),
1518 entry->the_bfd, member);
1519 if (! ((*link_info.callbacks->add_archive_element)
1520 (&link_info, member, "--whole-archive")))
1522 if (! bfd_link_add_symbols (member, &link_info))
1523 einfo (_("%F%B: could not read symbols: %E\n"), member);
1524 member = bfd_openr_next_archived_file (entry->the_bfd,
1528 entry->loaded = true;
1534 if (! bfd_link_add_symbols (entry->the_bfd, &link_info))
1535 einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd);
1537 entry->loaded = true;
1540 /* Handle a wild statement. SECTION or FILE or both may be NULL,
1541 indicating that it is a wildcard. Separate lang_input_section
1542 statements are created for each part of the expansion; they are
1543 added after the wild statement S. OUTPUT is the output section. */
1546 wild (s, section, file, target, output)
1547 lang_wild_statement_type *s;
1548 const char *section;
1550 const char *target ATTRIBUTE_UNUSED;
1551 lang_output_section_statement_type *output;
1553 walk_wild (s, section, file, output_section_callback, (PTR) output);
1555 if (section != (char *) NULL
1556 && strcmp (section, "COMMON") == 0
1557 && default_common_section == NULL)
1559 /* Remember the section that common is going to in case we later
1560 get something which doesn't know where to put it. */
1561 default_common_section = output;
1565 /* Return true iff target is the sought target. */
1568 get_target (target, data)
1569 const bfd_target *target;
1572 const char *sought = (const char *) data;
1574 return strcmp (target->name, sought) == 0;
1577 /* Like strcpy() but convert to lower case as well. */
1586 while ((c = *src++) != 0)
1588 if (isupper ((unsigned char) c))
1597 /* Remove the first occurance of needle (if any) in haystack
1601 strcut (haystack, needle)
1605 haystack = strstr (haystack, needle);
1611 for (src = haystack + strlen (needle); *src;)
1612 *haystack++ = *src++;
1618 /* Compare two target format name strings.
1619 Return a value indicating how "similar" they are. */
1622 name_compare (first, second)
1630 copy1 = xmalloc (strlen (first) + 1);
1631 copy2 = xmalloc (strlen (second) + 1);
1633 /* Convert the names to lower case. */
1634 stricpy (copy1, first);
1635 stricpy (copy2, second);
1637 /* Remove and endian strings from the name. */
1638 strcut (copy1, "big");
1639 strcut (copy1, "little");
1640 strcut (copy2, "big");
1641 strcut (copy2, "little");
1643 /* Return a value based on how many characters match,
1644 starting from the beginning. If both strings are
1645 the same then return 10 * their length. */
1646 for (result = 0; copy1[result] == copy2[result]; result++)
1647 if (copy1[result] == 0)
1659 /* Set by closest_target_match() below. */
1660 static const bfd_target *winner;
1662 /* Scan all the valid bfd targets looking for one that has the endianness
1663 requirement that was specified on the command line, and is the nearest
1664 match to the original output target. */
1667 closest_target_match (target, data)
1668 const bfd_target *target;
1671 const bfd_target *original = (const bfd_target *) data;
1673 if (command_line.endian == ENDIAN_BIG
1674 && target->byteorder != BFD_ENDIAN_BIG)
1677 if (command_line.endian == ENDIAN_LITTLE
1678 && target->byteorder != BFD_ENDIAN_LITTLE)
1681 /* Must be the same flavour. */
1682 if (target->flavour != original->flavour)
1685 /* If we have not found a potential winner yet, then record this one. */
1692 /* Oh dear, we now have two potential candidates for a successful match.
1693 Compare their names and choose the better one. */
1694 if (name_compare (target->name, original->name) > name_compare (winner->name, original->name))
1697 /* Keep on searching until wqe have checked them all. */
1701 /* Return the BFD target format of the first input file. */
1704 get_first_input_target ()
1706 char *target = NULL;
1708 LANG_FOR_EACH_INPUT_STATEMENT (s)
1710 if (s->header.type == lang_input_statement_enum
1713 ldfile_open_file (s);
1715 if (s->the_bfd != NULL
1716 && bfd_check_format (s->the_bfd, bfd_object))
1718 target = bfd_get_target (s->the_bfd);
1729 /* Open the output file. */
1737 /* Has the user told us which output format to use? */
1738 if (output_target == (char *) NULL)
1740 /* No - has the current target been set to something other than
1742 if (current_target != default_target)
1743 output_target = current_target;
1745 /* No - can we determine the format of the first input file? */
1748 output_target = get_first_input_target ();
1750 /* Failed - use the default output target. */
1751 if (output_target == NULL)
1752 output_target = default_target;
1756 /* Has the user requested a particular endianness on the command
1758 if (command_line.endian != ENDIAN_UNSET)
1760 const bfd_target *target;
1761 enum bfd_endian desired_endian;
1763 /* Get the chosen target. */
1764 target = bfd_search_for_target (get_target, (PTR) output_target);
1766 /* If the target is not supported, we cannot do anything. */
1769 if (command_line.endian == ENDIAN_BIG)
1770 desired_endian = BFD_ENDIAN_BIG;
1772 desired_endian = BFD_ENDIAN_LITTLE;
1774 /* See if the target has the wrong endianness. This should
1775 not happen if the linker script has provided big and
1776 little endian alternatives, but some scrips don't do
1778 if (target->byteorder != desired_endian)
1780 /* If it does, then see if the target provides
1781 an alternative with the correct endianness. */
1782 if (target->alternative_target != NULL
1783 && (target->alternative_target->byteorder == desired_endian))
1784 output_target = target->alternative_target->name;
1787 /* Try to find a target as similar as possible to
1788 the default target, but which has the desired
1789 endian characteristic. */
1790 (void) bfd_search_for_target (closest_target_match, (PTR) target);
1792 /* Oh dear - we could not find any targets that
1793 satisfy our requirements. */
1795 einfo (_("%P: warning: could not find any targets that match endianness requirement\n"));
1797 output_target = winner->name;
1803 output = bfd_openw (name, output_target);
1805 if (output == (bfd *) NULL)
1807 if (bfd_get_error () == bfd_error_invalid_target)
1808 einfo (_("%P%F: target %s not found\n"), output_target);
1810 einfo (_("%P%F: cannot open output file %s: %E\n"), name);
1813 delete_output_file_on_failure = true;
1816 output->flags |= D_PAGED;
1819 if (! bfd_set_format (output, bfd_object))
1820 einfo (_("%P%F:%s: can not make object file: %E\n"), name);
1821 if (! bfd_set_arch_mach (output,
1822 ldfile_output_architecture,
1823 ldfile_output_machine))
1824 einfo (_("%P%F:%s: can not set architecture: %E\n"), name);
1826 link_info.hash = bfd_link_hash_table_create (output);
1827 if (link_info.hash == (struct bfd_link_hash_table *) NULL)
1828 einfo (_("%P%F: can not create link hash table: %E\n"));
1830 bfd_set_gp_size (output, g_switch_value);
1835 ldlang_open_output (statement)
1836 lang_statement_union_type *statement;
1838 switch (statement->header.type)
1840 case lang_output_statement_enum:
1841 ASSERT (output_bfd == (bfd *) NULL);
1842 output_bfd = open_output (statement->output_statement.name);
1843 ldemul_set_output_arch ();
1844 if (config.magic_demand_paged && !link_info.relocateable)
1845 output_bfd->flags |= D_PAGED;
1847 output_bfd->flags &= ~D_PAGED;
1848 if (config.text_read_only)
1849 output_bfd->flags |= WP_TEXT;
1851 output_bfd->flags &= ~WP_TEXT;
1852 if (link_info.traditional_format)
1853 output_bfd->flags |= BFD_TRADITIONAL_FORMAT;
1855 output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT;
1858 case lang_target_statement_enum:
1859 current_target = statement->target_statement.target;
1866 /* Open all the input files. */
1869 open_input_bfds (s, force)
1870 lang_statement_union_type *s;
1873 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1875 switch (s->header.type)
1877 case lang_constructors_statement_enum:
1878 open_input_bfds (constructor_list.head, force);
1880 case lang_output_section_statement_enum:
1881 open_input_bfds (s->output_section_statement.children.head, force);
1883 case lang_wild_statement_enum:
1884 /* Maybe we should load the file's symbols. */
1885 if (s->wild_statement.filename
1886 && ! wildcardp (s->wild_statement.filename))
1887 (void) lookup_name (s->wild_statement.filename);
1888 open_input_bfds (s->wild_statement.children.head, force);
1890 case lang_group_statement_enum:
1892 struct bfd_link_hash_entry *undefs;
1894 /* We must continually search the entries in the group
1895 until no new symbols are added to the list of undefined
1900 undefs = link_info.hash->undefs_tail;
1901 open_input_bfds (s->group_statement.children.head, true);
1903 while (undefs != link_info.hash->undefs_tail);
1906 case lang_target_statement_enum:
1907 current_target = s->target_statement.target;
1909 case lang_input_statement_enum:
1910 if (s->input_statement.real)
1912 lang_statement_list_type add;
1913 bfd_error_handler_type pfn;
1915 s->input_statement.target = current_target;
1917 /* If we are being called from within a group, and this
1918 is an archive which has already been searched, then
1919 force it to be researched unless the whole archive
1920 has been loaded already. */
1922 && !s->input_statement.whole_archive
1923 && s->input_statement.loaded
1924 && bfd_check_format (s->input_statement.the_bfd,
1926 s->input_statement.loaded = false;
1928 lang_list_init (& add);
1930 /* We need to know if an error occurs whilst loading the
1931 symbols, since this means that a valid executable can
1933 pfn = bfd_set_error_handler (record_bfd_errors);
1935 load_symbols (&s->input_statement, &add);
1937 bfd_set_error_handler (pfn);
1939 if (add.head != NULL)
1941 *add.tail = s->next;
1952 /* If there are [COMMONS] statements, put a wild one into the bss
1956 lang_reasonable_defaults ()
1959 lang_output_section_statement_lookup (".text");
1960 lang_output_section_statement_lookup (".data");
1962 default_common_section = lang_output_section_statement_lookup (".bss");
1964 if (placed_commons == false)
1966 lang_wild_statement_type *new =
1967 new_stat (lang_wild_statement,
1968 &default_common_section->children);
1970 new->section_name = "COMMON";
1971 new->filename = (char *) NULL;
1972 lang_list_init (&new->children);
1977 /* Add the supplied name to the symbol table as an undefined reference.
1978 Remove items from the chain as we open input bfds. */
1979 typedef struct ldlang_undef_chain_list
1981 struct ldlang_undef_chain_list *next;
1983 } ldlang_undef_chain_list_type;
1985 static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head;
1988 ldlang_add_undef (name)
1989 const char *const name;
1991 ldlang_undef_chain_list_type *new =
1992 ((ldlang_undef_chain_list_type *)
1993 stat_alloc (sizeof (ldlang_undef_chain_list_type)));
1995 new->next = ldlang_undef_chain_list_head;
1996 ldlang_undef_chain_list_head = new;
1998 new->name = buystring (name);
2001 /* Run through the list of undefineds created above and place them
2002 into the linker hash table as undefined symbols belonging to the
2006 lang_place_undefineds ()
2008 ldlang_undef_chain_list_type *ptr;
2010 for (ptr = ldlang_undef_chain_list_head;
2011 ptr != (ldlang_undef_chain_list_type *) NULL;
2014 struct bfd_link_hash_entry *h;
2016 h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true);
2017 if (h == (struct bfd_link_hash_entry *) NULL)
2018 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
2019 if (h->type == bfd_link_hash_new)
2021 h->type = bfd_link_hash_undefined;
2022 h->u.undef.abfd = NULL;
2023 bfd_link_add_undef (link_info.hash, h);
2028 /* Open input files and attatch to output sections. */
2031 map_input_to_output_sections (s, target, output_section_statement)
2032 lang_statement_union_type *s;
2034 lang_output_section_statement_type *output_section_statement;
2036 for (; s != (lang_statement_union_type *) NULL; s = s->next)
2038 switch (s->header.type)
2041 case lang_wild_statement_enum:
2042 wild (&s->wild_statement, s->wild_statement.section_name,
2043 s->wild_statement.filename, target,
2044 output_section_statement);
2047 case lang_constructors_statement_enum:
2048 map_input_to_output_sections (constructor_list.head,
2050 output_section_statement);
2052 case lang_output_section_statement_enum:
2053 map_input_to_output_sections (s->output_section_statement.children.head,
2055 &s->output_section_statement);
2057 case lang_output_statement_enum:
2059 case lang_target_statement_enum:
2060 target = s->target_statement.target;
2062 case lang_group_statement_enum:
2063 map_input_to_output_sections (s->group_statement.children.head,
2065 output_section_statement);
2067 case lang_fill_statement_enum:
2068 case lang_input_section_enum:
2069 case lang_object_symbols_statement_enum:
2070 case lang_data_statement_enum:
2071 case lang_reloc_statement_enum:
2072 case lang_padding_statement_enum:
2073 case lang_input_statement_enum:
2074 if (output_section_statement != NULL
2075 && output_section_statement->bfd_section == NULL)
2076 init_os (output_section_statement);
2078 case lang_assignment_statement_enum:
2079 if (output_section_statement != NULL
2080 && output_section_statement->bfd_section == NULL)
2081 init_os (output_section_statement);
2083 /* Make sure that any sections mentioned in the assignment
2085 exp_init_os (s->assignment_statement.exp);
2087 case lang_afile_asection_pair_statement_enum:
2090 case lang_address_statement_enum:
2091 /* Mark the specified section with the supplied address. */
2093 lang_output_section_statement_type *os =
2094 lang_output_section_statement_lookup
2095 (s->address_statement.section_name);
2097 if (os->bfd_section == NULL)
2099 os->addr_tree = s->address_statement.address;
2107 print_output_section_statement (output_section_statement)
2108 lang_output_section_statement_type *output_section_statement;
2110 asection *section = output_section_statement->bfd_section;
2113 if (output_section_statement != abs_output_section)
2115 minfo ("\n%s", output_section_statement->name);
2117 if (section != NULL)
2119 print_dot = section->vma;
2121 len = strlen (output_section_statement->name);
2122 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2127 while (len < SECTION_NAME_MAP_LENGTH)
2133 minfo ("0x%V %W", section->vma, section->_raw_size);
2135 if (output_section_statement->load_base != NULL)
2139 addr = exp_get_abs_int (output_section_statement->load_base, 0,
2140 "load base", lang_final_phase_enum);
2141 minfo (_(" load address 0x%V"), addr);
2148 print_statement_list (output_section_statement->children.head,
2149 output_section_statement);
2153 print_assignment (assignment, output_section)
2154 lang_assignment_statement_type *assignment;
2155 lang_output_section_statement_type *output_section;
2158 etree_value_type result;
2160 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2163 result = exp_fold_tree (assignment->exp->assign.src, output_section,
2164 lang_final_phase_enum, print_dot, &print_dot);
2166 minfo ("0x%V", result.value + result.section->bfd_section->vma);
2177 exp_print_tree (assignment->exp);
2183 print_input_statement (statm)
2184 lang_input_statement_type *statm;
2186 if (statm->filename != (char *) NULL)
2188 fprintf (config.map_file, "LOAD %s\n", statm->filename);
2192 /* Print all symbols defined in a particular section. This is called
2193 via bfd_link_hash_traverse. */
2196 print_one_symbol (hash_entry, ptr)
2197 struct bfd_link_hash_entry *hash_entry;
2200 asection *sec = (asection *) ptr;
2202 if ((hash_entry->type == bfd_link_hash_defined
2203 || hash_entry->type == bfd_link_hash_defweak)
2204 && sec == hash_entry->u.def.section)
2208 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2211 (hash_entry->u.def.value
2212 + hash_entry->u.def.section->output_offset
2213 + hash_entry->u.def.section->output_section->vma));
2215 minfo (" %T\n", hash_entry->root.string);
2221 /* Print information about an input section to the map file. */
2224 print_input_section (in)
2225 lang_input_section_type *in;
2227 asection *i = in->section;
2228 bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size;
2229 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2230 ldfile_output_machine);
2235 minfo ("%s", i->name);
2237 if (i->output_section != NULL)
2241 len = 1 + strlen (i->name);
2242 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2247 while (len < SECTION_NAME_MAP_LENGTH)
2253 minfo ("0x%V %W %B\n",
2254 i->output_section->vma + i->output_offset, size / opb,
2257 if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size)
2259 len = SECTION_NAME_MAP_LENGTH + 3;
2271 minfo (_("%W (size before relaxing)\n"), i->_raw_size);
2274 bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i);
2276 print_dot = i->output_section->vma + i->output_offset + size / opb;
2282 print_fill_statement (fill)
2283 lang_fill_statement_type *fill;
2285 fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill);
2289 print_data_statement (data)
2290 lang_data_statement_type *data;
2296 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2297 ldfile_output_machine);
2299 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2302 addr = data->output_vma;
2303 if (data->output_section != NULL)
2304 addr += data->output_section->vma;
2332 minfo ("0x%V %W %s 0x%v", addr, size, name, data->value);
2334 if (data->exp->type.node_class != etree_value)
2337 exp_print_tree (data->exp);
2342 print_dot = addr + size / opb;
2346 /* Print an address statement. These are generated by options like
2350 print_address_statement (address)
2351 lang_address_statement_type *address;
2353 minfo (_("Address of section %s set to "), address->section_name);
2354 exp_print_tree (address->address);
2358 /* Print a reloc statement. */
2361 print_reloc_statement (reloc)
2362 lang_reloc_statement_type *reloc;
2367 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2368 ldfile_output_machine);
2370 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2373 addr = reloc->output_vma;
2374 if (reloc->output_section != NULL)
2375 addr += reloc->output_section->vma;
2377 size = bfd_get_reloc_size (reloc->howto);
2379 minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name);
2381 if (reloc->name != NULL)
2382 minfo ("%s+", reloc->name);
2384 minfo ("%s+", reloc->section->name);
2386 exp_print_tree (reloc->addend_exp);
2390 print_dot = addr + size / opb;
2394 print_padding_statement (s)
2395 lang_padding_statement_type *s;
2399 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2400 ldfile_output_machine);
2404 len = sizeof " *fill*" - 1;
2405 while (len < SECTION_NAME_MAP_LENGTH)
2411 addr = s->output_offset;
2412 if (s->output_section != NULL)
2413 addr += s->output_section->vma;
2414 minfo ("0x%V %W", addr, s->size);
2417 minfo (" %u", s->fill);
2421 print_dot = addr + s->size / opb;
2425 print_wild_statement (w, os)
2426 lang_wild_statement_type *w;
2427 lang_output_section_statement_type *os;
2431 if (w->filenames_sorted)
2433 if (w->exclude_filename_list != NULL)
2436 minfo ("EXCLUDE_FILE ( %s", w->exclude_filename_list->name);
2437 for (tmp = w->exclude_filename_list->next; tmp; tmp = tmp->next)
2438 minfo (", %s", tmp->name);
2441 if (w->filename != NULL)
2442 minfo ("%s", w->filename);
2445 if (w->filenames_sorted)
2449 if (w->sections_sorted)
2451 if (w->section_name != NULL)
2452 minfo ("%s", w->section_name);
2455 if (w->sections_sorted)
2461 print_statement_list (w->children.head, os);
2464 /* Print a group statement. */
2468 lang_group_statement_type *s;
2469 lang_output_section_statement_type *os;
2471 fprintf (config.map_file, "START GROUP\n");
2472 print_statement_list (s->children.head, os);
2473 fprintf (config.map_file, "END GROUP\n");
2476 /* Print the list of statements in S.
2477 This can be called for any statement type. */
2480 print_statement_list (s, os)
2481 lang_statement_union_type *s;
2482 lang_output_section_statement_type *os;
2486 print_statement (s, os);
2491 /* Print the first statement in statement list S.
2492 This can be called for any statement type. */
2495 print_statement (s, os)
2496 lang_statement_union_type *s;
2497 lang_output_section_statement_type *os;
2499 switch (s->header.type)
2502 fprintf (config.map_file, _("Fail with %d\n"), s->header.type);
2505 case lang_constructors_statement_enum:
2506 if (constructor_list.head != NULL)
2508 if (constructors_sorted)
2509 minfo (" SORT (CONSTRUCTORS)\n");
2511 minfo (" CONSTRUCTORS\n");
2512 print_statement_list (constructor_list.head, os);
2515 case lang_wild_statement_enum:
2516 print_wild_statement (&s->wild_statement, os);
2518 case lang_address_statement_enum:
2519 print_address_statement (&s->address_statement);
2521 case lang_object_symbols_statement_enum:
2522 minfo (" CREATE_OBJECT_SYMBOLS\n");
2524 case lang_fill_statement_enum:
2525 print_fill_statement (&s->fill_statement);
2527 case lang_data_statement_enum:
2528 print_data_statement (&s->data_statement);
2530 case lang_reloc_statement_enum:
2531 print_reloc_statement (&s->reloc_statement);
2533 case lang_input_section_enum:
2534 print_input_section (&s->input_section);
2536 case lang_padding_statement_enum:
2537 print_padding_statement (&s->padding_statement);
2539 case lang_output_section_statement_enum:
2540 print_output_section_statement (&s->output_section_statement);
2542 case lang_assignment_statement_enum:
2543 print_assignment (&s->assignment_statement, os);
2545 case lang_target_statement_enum:
2546 fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
2548 case lang_output_statement_enum:
2549 minfo ("OUTPUT(%s", s->output_statement.name);
2550 if (output_target != NULL)
2551 minfo (" %s", output_target);
2554 case lang_input_statement_enum:
2555 print_input_statement (&s->input_statement);
2557 case lang_group_statement_enum:
2558 print_group (&s->group_statement, os);
2560 case lang_afile_asection_pair_statement_enum:
2569 print_statement_list (statement_list.head, abs_output_section);
2572 /* Print the first N statements in statement list S to STDERR.
2573 If N == 0, nothing is printed.
2574 If N < 0, the entire list is printed.
2575 Intended to be called from GDB. */
2578 dprint_statement (s, n)
2579 lang_statement_union_type *s;
2582 FILE *map_save = config.map_file;
2584 config.map_file = stderr;
2587 print_statement_list (s, abs_output_section);
2590 while (s && --n >= 0)
2592 print_statement (s, abs_output_section);
2597 config.map_file = map_save;
2601 insert_pad (this_ptr, fill, power, output_section_statement, dot)
2602 lang_statement_union_type **this_ptr;
2605 asection *output_section_statement;
2608 /* Align this section first to the
2609 input sections requirement, then
2610 to the output section's requirement.
2611 If this alignment is > than any seen before,
2612 then record it too. Perform the alignment by
2613 inserting a magic 'padding' statement. */
2615 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2616 ldfile_output_machine);
2617 unsigned int alignment_needed = align_power (dot, power) - dot;
2619 if (alignment_needed != 0)
2621 lang_statement_union_type *new =
2622 ((lang_statement_union_type *)
2623 stat_alloc (sizeof (lang_padding_statement_type)));
2625 /* Link into existing chain. */
2626 new->header.next = *this_ptr;
2628 new->header.type = lang_padding_statement_enum;
2629 new->padding_statement.output_section = output_section_statement;
2630 new->padding_statement.output_offset =
2631 dot - output_section_statement->vma;
2632 new->padding_statement.fill = fill;
2633 new->padding_statement.size = alignment_needed * opb;
2636 /* Remember the most restrictive alignment. */
2637 if (power > output_section_statement->alignment_power)
2639 output_section_statement->alignment_power = power;
2641 output_section_statement->_raw_size += alignment_needed * opb;
2643 return dot + alignment_needed;
2646 /* Work out how much this section will move the dot point. */
2649 size_input_section (this_ptr, output_section_statement, fill, dot, relax)
2650 lang_statement_union_type **this_ptr;
2651 lang_output_section_statement_type *output_section_statement;
2654 boolean relax ATTRIBUTE_UNUSED;
2656 lang_input_section_type *is = &((*this_ptr)->input_section);
2657 asection *i = is->section;
2658 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2659 ldfile_output_machine);
2661 if (is->ifile->just_syms_flag == false)
2663 if (output_section_statement->subsection_alignment != -1)
2664 i->alignment_power =
2665 output_section_statement->subsection_alignment;
2667 dot = insert_pad (this_ptr, fill, i->alignment_power,
2668 output_section_statement->bfd_section, dot);
2670 /* Remember where in the output section this input section goes. */
2672 i->output_offset = dot - output_section_statement->bfd_section->vma;
2674 /* Mark how big the output section must be to contain this now. */
2675 if (i->_cooked_size != 0)
2676 dot += i->_cooked_size / opb;
2678 dot += i->_raw_size / opb;
2679 output_section_statement->bfd_section->_raw_size =
2680 (dot - output_section_statement->bfd_section->vma) * opb;
2684 i->output_offset = i->vma - output_section_statement->bfd_section->vma;
2690 #define IGNORE_SECTION(bfd, s) \
2691 (((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_LOAD)) != (SEC_ALLOC | SEC_LOAD)) \
2692 || bfd_section_size (bfd, s) == 0)
2693 /* Check to see if any allocated sections overlap with other allocated
2694 sections. This can happen when the linker script specifically specifies
2695 the output section addresses of the two sections. */
2698 lang_check_section_addresses ()
2701 unsigned opb = bfd_octets_per_byte (output_bfd);
2704 /* Scan all sections in the output list. */
2705 for (s = output_bfd->sections; s != NULL; s = s->next)
2709 /* Ignore sections which are not loaded or which have no contents. */
2710 if (IGNORE_SECTION (output_bfd, s))
2713 /* Once we reach section 's' stop our seach. This prevents two
2714 warning messages from being produced, one for 'section A overlaps
2715 section B' and one for 'section B overlaps section A'. */
2716 for (os = output_bfd->sections; os != s; os = os->next)
2723 /* Only consider loadable sections with real contents. */
2724 if (IGNORE_SECTION (output_bfd, os))
2727 /* We must check the sections' LMA addresses not their
2728 VMA addresses because overlay sections can have
2729 overlapping VMAs but they must have distinct LMAs. */
2730 s_start = bfd_section_lma (output_bfd, s);
2731 os_start = bfd_section_lma (output_bfd, os);
2732 s_end = s_start + bfd_section_size (output_bfd, s) / opb - 1;
2733 os_end = os_start + bfd_section_size (output_bfd, os) / opb - 1;
2735 /* Look for an overlap. */
2736 if ((s_end < os_start) || (s_start > os_end))
2740 _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
2741 s->name, s_start, s_end, os->name, os_start, os_end);
2743 /* Once we have found one overlap for this section,
2744 stop looking for others. */
2750 /* This variable indicates whether bfd_relax_section should be called
2753 static boolean relax_again;
2755 /* Make sure the new address is within the region. We explicitly permit the
2756 current address to be at the exact end of the region when the address is
2757 non-zero, in case the region is at the end of addressable memory and the
2758 calculation wraps around. */
2761 os_region_check (os, region, tree, base)
2762 lang_output_section_statement_type *os;
2763 struct memory_region_struct *region;
2767 if ((region->current < region->origin
2768 || (region->current - region->origin > region->length))
2769 && ((region->current != region->origin + region->length)
2772 if (tree != (etree_type *) NULL)
2774 einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"),
2776 os->bfd_section->owner,
2777 os->bfd_section->name,
2782 einfo (_("%X%P: region %s is full (%B section %s)\n"),
2784 os->bfd_section->owner,
2785 os->bfd_section->name);
2787 /* Reset the region pointer. */
2788 region->current = region->origin;
2792 /* Set the sizes for all the output sections. */
2795 lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
2796 lang_statement_union_type *s;
2797 lang_output_section_statement_type *output_section_statement;
2798 lang_statement_union_type **prev;
2803 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2804 ldfile_output_machine);
2806 /* Size up the sections from their constituent parts. */
2807 for (; s != (lang_statement_union_type *) NULL; s = s->next)
2809 switch (s->header.type)
2811 case lang_output_section_statement_enum:
2814 lang_output_section_statement_type *os = &s->output_section_statement;
2816 if (os->bfd_section == NULL)
2817 /* This section was never actually created. */
2820 /* If this is a COFF shared library section, use the size and
2821 address from the input section. FIXME: This is COFF
2822 specific; it would be cleaner if there were some other way
2823 to do this, but nothing simple comes to mind. */
2824 if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
2828 if (os->children.head == NULL
2829 || os->children.head->next != NULL
2830 || os->children.head->header.type != lang_input_section_enum)
2831 einfo (_("%P%X: Internal error on COFF shared library section %s\n"),
2834 input = os->children.head->input_section.section;
2835 bfd_set_section_vma (os->bfd_section->owner,
2837 bfd_section_vma (input->owner, input));
2838 os->bfd_section->_raw_size = input->_raw_size;
2842 if (bfd_is_abs_section (os->bfd_section))
2844 /* No matter what happens, an abs section starts at zero. */
2845 ASSERT (os->bfd_section->vma == 0);
2849 if (os->addr_tree == (etree_type *) NULL)
2851 /* No address specified for this section, get one
2852 from the region specification. */
2853 if (os->region == (lang_memory_region_type *) NULL
2854 || (((bfd_get_section_flags (output_bfd, os->bfd_section)
2855 & (SEC_ALLOC | SEC_LOAD)) != 0)
2856 && os->region->name[0] == '*'
2857 && strcmp (os->region->name, "*default*") == 0))
2859 os->region = lang_memory_default (os->bfd_section);
2862 /* If a loadable section is using the default memory
2863 region, and some non default memory regions were
2864 defined, issue a warning. */
2865 if ((bfd_get_section_flags (output_bfd, os->bfd_section)
2866 & (SEC_ALLOC | SEC_LOAD)) != 0
2867 && ! link_info.relocateable
2868 && strcmp (os->region->name, "*default*") == 0
2869 && lang_memory_region_list != NULL
2870 && (strcmp (lang_memory_region_list->name, "*default*") != 0
2871 || lang_memory_region_list->next != NULL))
2872 einfo (_("%P: warning: no memory region specified for section `%s'\n"),
2873 bfd_get_section_name (output_bfd, os->bfd_section));
2875 dot = os->region->current;
2877 if (os->section_alignment == -1)
2882 dot = align_power (dot, os->bfd_section->alignment_power);
2884 if (dot != olddot && config.warn_section_align)
2885 einfo (_("%P: warning: changing start of section %s by %u bytes\n"),
2886 os->name, (unsigned int) (dot - olddot));
2893 r = exp_fold_tree (os->addr_tree,
2895 lang_allocating_phase_enum,
2897 if (r.valid_p == false)
2899 einfo (_("%F%S: non constant address expression for section %s\n"),
2902 dot = r.value + r.section->bfd_section->vma;
2905 /* The section starts here.
2906 First, align to what the section needs. */
2908 if (os->section_alignment != -1)
2909 dot = align_power (dot, os->section_alignment);
2911 bfd_set_section_vma (0, os->bfd_section, dot);
2913 os->bfd_section->output_offset = 0;
2916 (void) lang_size_sections (os->children.head, os,
2918 os->fill, dot, relax);
2920 /* Put the section within the requested block size, or
2921 align at the block boundary. */
2922 after = ALIGN_N (os->bfd_section->vma
2923 + os->bfd_section->_raw_size / opb,
2924 /* The coercion here is important, see ld.h. */
2925 (bfd_vma) os->block_value);
2927 if (bfd_is_abs_section (os->bfd_section))
2928 ASSERT (after == os->bfd_section->vma);
2930 os->bfd_section->_raw_size =
2931 (after - os->bfd_section->vma) * opb;
2932 dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
2933 os->processed = true;
2935 /* Update dot in the region ?
2936 We only do this if the section is going to be allocated,
2937 since unallocated sections do not contribute to the region's
2938 overall size in memory.
2940 If the SEC_NEVER_LOAD bit is not set, it will affect the
2941 addresses of sections after it. We have to update
2943 if (os->region != (lang_memory_region_type *) NULL
2944 && ((bfd_get_section_flags (output_bfd, os->bfd_section)
2945 & SEC_NEVER_LOAD) == 0
2946 || (bfd_get_section_flags (output_bfd, os->bfd_section)
2947 & (SEC_ALLOC | SEC_LOAD))))
2949 os->region->current = dot;
2951 /* Make sure the new address is within the region. */
2952 os_region_check (os, os->region, os->addr_tree,
2953 os->bfd_section->vma);
2955 /* If there's no load address specified, use the run
2956 region as the load region. */
2957 if (os->lma_region == NULL && os->load_base == NULL)
2958 os->lma_region = os->region;
2960 if (os->lma_region != NULL)
2962 if (os->load_base != NULL)
2964 einfo (_("%X%P: use an absolute load address or a load memory region, not both\n"));
2968 /* Don't allocate twice. */
2969 if (os->lma_region != os->region)
2971 /* Set load_base, which will be handled later. */
2973 exp_intop (os->lma_region->current);
2974 os->lma_region->current +=
2975 os->bfd_section->_raw_size / opb;
2976 os_region_check (os, os->lma_region, NULL,
2977 os->bfd_section->lma);
2985 case lang_constructors_statement_enum:
2986 dot = lang_size_sections (constructor_list.head,
2987 output_section_statement,
2988 &s->wild_statement.children.head,
2993 case lang_data_statement_enum:
2995 unsigned int size = 0;
2997 s->data_statement.output_vma =
2998 dot - output_section_statement->bfd_section->vma;
2999 s->data_statement.output_section =
3000 output_section_statement->bfd_section;
3002 switch (s->data_statement.type)
3023 output_section_statement->bfd_section->_raw_size += size;
3024 /* The output section gets contents, and then we inspect for
3025 any flags set in the input script which override any ALLOC. */
3026 output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS;
3027 if (!(output_section_statement->flags & SEC_NEVER_LOAD))
3029 output_section_statement->bfd_section->flags |=
3030 SEC_ALLOC | SEC_LOAD;
3035 case lang_reloc_statement_enum:
3039 s->reloc_statement.output_vma =
3040 dot - output_section_statement->bfd_section->vma;
3041 s->reloc_statement.output_section =
3042 output_section_statement->bfd_section;
3043 size = bfd_get_reloc_size (s->reloc_statement.howto);
3045 output_section_statement->bfd_section->_raw_size += size;
3049 case lang_wild_statement_enum:
3051 dot = lang_size_sections (s->wild_statement.children.head,
3052 output_section_statement,
3053 &s->wild_statement.children.head,
3058 case lang_object_symbols_statement_enum:
3059 link_info.create_object_symbols_section =
3060 output_section_statement->bfd_section;
3062 case lang_output_statement_enum:
3063 case lang_target_statement_enum:
3065 case lang_input_section_enum:
3069 i = (*prev)->input_section.section;
3072 if (i->_cooked_size == 0)
3073 i->_cooked_size = i->_raw_size;
3079 if (! bfd_relax_section (i->owner, i, &link_info, &again))
3080 einfo (_("%P%F: can't relax section: %E\n"));
3084 dot = size_input_section (prev,
3085 output_section_statement,
3086 output_section_statement->fill,
3090 case lang_input_statement_enum:
3092 case lang_fill_statement_enum:
3093 s->fill_statement.output_section =
3094 output_section_statement->bfd_section;
3096 fill = s->fill_statement.fill;
3098 case lang_assignment_statement_enum:
3100 bfd_vma newdot = dot;
3102 exp_fold_tree (s->assignment_statement.exp,
3103 output_section_statement,
3104 lang_allocating_phase_enum,
3110 /* The assignment changed dot. Insert a pad. */
3111 if (output_section_statement == abs_output_section)
3113 /* If we don't have an output section, then just adjust
3114 the default memory address. */
3115 lang_memory_region_lookup ("*default*")->current = newdot;
3119 lang_statement_union_type *new =
3120 ((lang_statement_union_type *)
3121 stat_alloc (sizeof (lang_padding_statement_type)));
3123 /* Link into existing chain. */
3124 new->header.next = *prev;
3126 new->header.type = lang_padding_statement_enum;
3127 new->padding_statement.output_section =
3128 output_section_statement->bfd_section;
3129 new->padding_statement.output_offset =
3130 dot - output_section_statement->bfd_section->vma;
3131 new->padding_statement.fill = fill;
3132 new->padding_statement.size = (newdot - dot) * opb;
3133 output_section_statement->bfd_section->_raw_size +=
3134 new->padding_statement.size;
3142 case lang_padding_statement_enum:
3143 /* If we are relaxing, and this is not the first pass, some
3144 padding statements may have been inserted during previous
3145 passes. We may have to move the padding statement to a new
3146 location if dot has a different value at this point in this
3147 pass than it did at this point in the previous pass. */
3148 s->padding_statement.output_offset =
3149 dot - output_section_statement->bfd_section->vma;
3150 dot += s->padding_statement.size / opb;
3151 output_section_statement->bfd_section->_raw_size +=
3152 s->padding_statement.size;
3155 case lang_group_statement_enum:
3156 dot = lang_size_sections (s->group_statement.children.head,
3157 output_section_statement,
3158 &s->group_statement.children.head,
3166 /* This can only get here when relaxing is turned on. */
3168 case lang_address_statement_enum:
3171 prev = &s->header.next;
3177 lang_do_assignments (s, output_section_statement, fill, dot)
3178 lang_statement_union_type *s;
3179 lang_output_section_statement_type *output_section_statement;
3183 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3184 ldfile_output_machine);
3186 for (; s != (lang_statement_union_type *) NULL; s = s->next)
3188 switch (s->header.type)
3190 case lang_constructors_statement_enum:
3191 dot = lang_do_assignments (constructor_list.head,
3192 output_section_statement,
3197 case lang_output_section_statement_enum:
3199 lang_output_section_statement_type *os =
3200 &(s->output_section_statement);
3202 if (os->bfd_section != NULL)
3204 dot = os->bfd_section->vma;
3205 (void) lang_do_assignments (os->children.head, os,
3207 dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
3212 /* If nothing has been placed into the output section then
3213 it won't have a bfd_section. */
3214 if (os->bfd_section)
3216 os->bfd_section->lma
3217 = exp_get_abs_int (os->load_base, 0, "load base",
3218 lang_final_phase_enum);
3223 case lang_wild_statement_enum:
3225 dot = lang_do_assignments (s->wild_statement.children.head,
3226 output_section_statement,
3231 case lang_object_symbols_statement_enum:
3232 case lang_output_statement_enum:
3233 case lang_target_statement_enum:
3235 case lang_common_statement_enum:
3238 case lang_data_statement_enum:
3240 etree_value_type value;
3242 value = exp_fold_tree (s->data_statement.exp,
3244 lang_final_phase_enum, dot, &dot);
3245 s->data_statement.value = value.value;
3246 if (value.valid_p == false)
3247 einfo (_("%F%P: invalid data statement\n"));
3251 switch (s->data_statement.type)
3275 case lang_reloc_statement_enum:
3277 etree_value_type value;
3279 value = exp_fold_tree (s->reloc_statement.addend_exp,
3281 lang_final_phase_enum, dot, &dot);
3282 s->reloc_statement.addend_value = value.value;
3283 if (value.valid_p == false)
3284 einfo (_("%F%P: invalid reloc statement\n"));
3286 dot += bfd_get_reloc_size (s->reloc_statement.howto) / opb;
3289 case lang_input_section_enum:
3291 asection *in = s->input_section.section;
3293 if (in->_cooked_size != 0)
3294 dot += in->_cooked_size / opb;
3296 dot += in->_raw_size / opb;
3300 case lang_input_statement_enum:
3302 case lang_fill_statement_enum:
3303 fill = s->fill_statement.fill;
3305 case lang_assignment_statement_enum:
3307 exp_fold_tree (s->assignment_statement.exp,
3308 output_section_statement,
3309 lang_final_phase_enum,
3315 case lang_padding_statement_enum:
3316 dot += s->padding_statement.size / opb;
3319 case lang_group_statement_enum:
3320 dot = lang_do_assignments (s->group_statement.children.head,
3321 output_section_statement,
3329 case lang_address_statement_enum:
3337 /* Fix any .startof. or .sizeof. symbols. When the assemblers see the
3338 operator .startof. (section_name), it produces an undefined symbol
3339 .startof.section_name. Similarly, when it sees
3340 .sizeof. (section_name), it produces an undefined symbol
3341 .sizeof.section_name. For all the output sections, we look for
3342 such symbols, and set them to the correct value. */
3349 if (link_info.relocateable)
3352 for (s = output_bfd->sections; s != NULL; s = s->next)
3354 const char *secname;
3356 struct bfd_link_hash_entry *h;
3358 secname = bfd_get_section_name (output_bfd, s);
3359 buf = xmalloc (10 + strlen (secname));
3361 sprintf (buf, ".startof.%s", secname);
3362 h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
3363 if (h != NULL && h->type == bfd_link_hash_undefined)
3365 h->type = bfd_link_hash_defined;
3366 h->u.def.value = bfd_get_section_vma (output_bfd, s);
3367 h->u.def.section = bfd_abs_section_ptr;
3370 sprintf (buf, ".sizeof.%s", secname);
3371 h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
3372 if (h != NULL && h->type == bfd_link_hash_undefined)
3374 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3375 ldfile_output_machine);
3376 h->type = bfd_link_hash_defined;
3377 if (s->_cooked_size != 0)
3378 h->u.def.value = s->_cooked_size / opb;
3380 h->u.def.value = s->_raw_size / opb;
3381 h->u.def.section = bfd_abs_section_ptr;
3391 struct bfd_link_hash_entry *h;
3394 if (link_info.relocateable || link_info.shared)
3399 if (entry_symbol == (char *) NULL)
3401 /* No entry has been specified. Look for start, but don't warn
3402 if we don't find it. */
3403 entry_symbol = "start";
3407 h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
3408 if (h != (struct bfd_link_hash_entry *) NULL
3409 && (h->type == bfd_link_hash_defined
3410 || h->type == bfd_link_hash_defweak)
3411 && h->u.def.section->output_section != NULL)
3415 val = (h->u.def.value
3416 + bfd_get_section_vma (output_bfd,
3417 h->u.def.section->output_section)
3418 + h->u.def.section->output_offset);
3419 if (! bfd_set_start_address (output_bfd, val))
3420 einfo (_("%P%F:%s: can't set start address\n"), entry_symbol);
3427 /* We couldn't find the entry symbol. Try parsing it as a
3429 val = bfd_scan_vma (entry_symbol, &send, 0);
3432 if (! bfd_set_start_address (output_bfd, val))
3433 einfo (_("%P%F: can't set start address\n"));
3439 /* Can't find the entry symbol, and it's not a number. Use
3440 the first address in the text section. */
3441 ts = bfd_get_section_by_name (output_bfd, ".text");
3442 if (ts != (asection *) NULL)
3445 einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"),
3446 entry_symbol, bfd_get_section_vma (output_bfd, ts));
3447 if (! bfd_set_start_address (output_bfd,
3448 bfd_get_section_vma (output_bfd,
3450 einfo (_("%P%F: can't set start address\n"));
3455 einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"),
3463 /* This is the routine to handle BFD error messages. */
3465 #ifdef ANSI_PROTOTYPES
3468 record_bfd_errors (const char *s, ...)
3476 vfprintf (stderr, s, p);
3480 fprintf (stderr, "\n");
3485 #else /* ! defined (ANSI_PROTOTYPES) */
3488 record_bfd_errors (va_alist)
3498 s = va_arg (p, const char *);
3499 vfprintf (stderr, s, p);
3503 fprintf (stderr, "\n");
3508 #endif /* ! defined (ANSI_PROTOTYPES) */
3509 /* This is a small function used when we want to ignore errors from
3513 #ifdef ANSI_PROTOTYPES
3514 ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...)
3516 ignore_bfd_errors (s)
3517 const char *s ATTRIBUTE_UNUSED;
3520 /* Don't do anything. */
3523 /* Check that the architecture of all the input files is compatible
3524 with the output file. Also call the backend to let it do any
3525 other checking that is needed. */
3530 lang_statement_union_type *file;
3532 const bfd_arch_info_type *compatible;
3534 for (file = file_chain.head;
3535 file != (lang_statement_union_type *) NULL;
3536 file = file->input_statement.next)
3538 input_bfd = file->input_statement.the_bfd;
3539 compatible = bfd_arch_get_compatible (input_bfd,
3541 if (compatible == NULL)
3543 if (command_line.warn_mismatch)
3544 einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"),
3545 bfd_printable_name (input_bfd), input_bfd,
3546 bfd_printable_name (output_bfd));
3548 else if (bfd_count_sections (input_bfd))
3550 /* If the input bfd has no contents, it shouldn't set the
3551 private data of the output bfd. */
3553 bfd_error_handler_type pfn = NULL;
3555 /* If we aren't supposed to warn about mismatched input
3556 files, temporarily set the BFD error handler to a
3557 function which will do nothing. We still want to call
3558 bfd_merge_private_bfd_data, since it may set up
3559 information which is needed in the output file. */
3560 if (! command_line.warn_mismatch)
3561 pfn = bfd_set_error_handler (ignore_bfd_errors);
3562 if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
3564 if (command_line.warn_mismatch)
3565 einfo (_("%E%X: failed to merge target specific data of file %B\n"),
3568 if (! command_line.warn_mismatch)
3569 bfd_set_error_handler (pfn);
3574 /* Look through all the global common symbols and attach them to the
3575 correct section. The -sort-common command line switch may be used
3576 to roughly sort the entries by size. */
3581 if (link_info.relocateable
3582 && ! command_line.force_common_definition)
3585 if (! config.sort_common)
3586 bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL);
3591 for (power = 4; power >= 0; power--)
3592 bfd_link_hash_traverse (link_info.hash, lang_one_common,
3597 /* Place one common symbol in the correct section. */
3600 lang_one_common (h, info)
3601 struct bfd_link_hash_entry *h;
3604 unsigned int power_of_two;
3607 unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3608 ldfile_output_machine);
3610 if (h->type != bfd_link_hash_common)
3614 power_of_two = h->u.c.p->alignment_power;
3616 if (config.sort_common
3617 && power_of_two < (unsigned int) *(int *) info)
3620 section = h->u.c.p->section;
3622 /* Increase the size of the section. */
3623 section->_cooked_size = ALIGN_N ((section->_cooked_size + opb - 1) / opb,
3624 (bfd_size_type) (1 << power_of_two)) * opb;
3626 /* Adjust the alignment if necessary. */
3627 if (power_of_two > section->alignment_power)
3628 section->alignment_power = power_of_two;
3630 /* Change the symbol from common to defined. */
3631 h->type = bfd_link_hash_defined;
3632 h->u.def.section = section;
3633 h->u.def.value = section->_cooked_size;
3635 /* Increase the size of the section. */
3636 section->_cooked_size += size;
3638 /* Make sure the section is allocated in memory, and make sure that
3639 it is no longer a common section. */
3640 section->flags |= SEC_ALLOC;
3641 section->flags &= ~SEC_IS_COMMON;
3643 if (config.map_file != NULL)
3645 static boolean header_printed;
3650 if (! header_printed)
3652 minfo (_("\nAllocating common symbols\n"));
3653 minfo (_("Common symbol size file\n\n"));
3654 header_printed = true;
3657 name = demangle (h->root.string);
3659 len = strlen (name);
3674 if (size <= 0xffffffff)
3675 sprintf (buf, "%lx", (unsigned long) size);
3677 sprintf_vma (buf, size);
3687 minfo ("%B\n", section->owner);
3693 /* Run through the input files and ensure that every input section has
3694 somewhere to go. If one is found without a destination then create
3695 an input request and place it into the statement tree. */
3698 lang_place_orphans ()
3700 LANG_FOR_EACH_INPUT_STATEMENT (file)
3704 for (s = file->the_bfd->sections;
3705 s != (asection *) NULL;
3708 if (s->output_section == (asection *) NULL)
3710 /* This section of the file is not attatched, root
3711 around for a sensible place for it to go. */
3713 if (file->just_syms_flag)
3715 /* We are only retrieving symbol values from this
3716 file. We want the symbols to act as though the
3717 values in the file are absolute. */
3718 s->output_section = bfd_abs_section_ptr;
3719 s->output_offset = s->vma;
3721 else if (strcmp (s->name, "COMMON") == 0)
3723 /* This is a lonely common section which must have
3724 come from an archive. We attach to the section
3725 with the wildcard. */
3726 if (! link_info.relocateable
3727 || command_line.force_common_definition)
3729 if (default_common_section == NULL)
3732 /* This message happens when using the
3733 svr3.ifile linker script, so I have
3735 info_msg (_("%P: no [COMMON] command, defaulting to .bss\n"));
3737 default_common_section =
3738 lang_output_section_statement_lookup (".bss");
3741 wild_doit (&default_common_section->children, s,
3742 default_common_section, file);
3745 else if (ldemul_place_orphan (file, s))
3749 lang_output_section_statement_type *os =
3750 lang_output_section_statement_lookup (s->name);
3752 wild_doit (&os->children, s, os, file);
3760 lang_set_flags (ptr, flags, invert)
3761 lang_memory_region_type *ptr;
3765 flagword *ptr_flags;
3767 ptr_flags = invert ? &ptr->not_flags : &ptr->flags;
3773 *ptr_flags |= SEC_ALLOC;
3777 *ptr_flags |= SEC_READONLY;
3781 *ptr_flags |= SEC_DATA;
3785 *ptr_flags |= SEC_CODE;
3790 *ptr_flags |= SEC_LOAD;
3794 einfo (_("%P%F: invalid syntax in flags\n"));
3801 /* Call a function on each input file. This function will be called
3802 on an archive, but not on the elements. */
3805 lang_for_each_input_file (func)
3806 void (*func) PARAMS ((lang_input_statement_type *));
3808 lang_input_statement_type *f;
3810 for (f = (lang_input_statement_type *) input_file_chain.head;
3812 f = (lang_input_statement_type *) f->next_real_file)
3816 /* Call a function on each file. The function will be called on all
3817 the elements of an archive which are included in the link, but will
3818 not be called on the archive file itself. */
3821 lang_for_each_file (func)
3822 void (*func) PARAMS ((lang_input_statement_type *));
3824 LANG_FOR_EACH_INPUT_STATEMENT (f)
3835 lang_for_each_input_section (func)
3836 void (*func) PARAMS ((bfd *ab, asection *as));
3838 LANG_FOR_EACH_INPUT_STATEMENT (f)
3842 for (s = f->the_bfd->sections;
3843 s != (asection *) NULL;
3846 func (f->the_bfd, s);
3854 ldlang_add_file (entry)
3855 lang_input_statement_type *entry;
3859 lang_statement_append (&file_chain,
3860 (lang_statement_union_type *) entry,
3863 /* The BFD linker needs to have a list of all input BFDs involved in
3865 ASSERT (entry->the_bfd->link_next == (bfd *) NULL);
3866 ASSERT (entry->the_bfd != output_bfd);
3867 for (pp = &link_info.input_bfds;
3868 *pp != (bfd *) NULL;
3869 pp = &(*pp)->link_next)
3871 *pp = entry->the_bfd;
3872 entry->the_bfd->usrdata = (PTR) entry;
3873 bfd_set_gp_size (entry->the_bfd, g_switch_value);
3875 /* Look through the sections and check for any which should not be
3876 included in the link. We need to do this now, so that we can
3877 notice when the backend linker tries to report multiple
3878 definition errors for symbols which are in sections we aren't
3879 going to link. FIXME: It might be better to entirely ignore
3880 symbols which are defined in sections which are going to be
3881 discarded. This would require modifying the backend linker for
3882 each backend which might set the SEC_LINK_ONCE flag. If we do
3883 this, we should probably handle SEC_EXCLUDE in the same way. */
3885 bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry);
3889 lang_add_output (name, from_script)
3893 /* Make -o on command line override OUTPUT in script. */
3894 if (had_output_filename == false || !from_script)
3896 output_filename = name;
3897 had_output_filename = true;
3901 static lang_output_section_statement_type *current_section;
3913 for (l = 0; l < 32; l++)
3915 if (i >= (unsigned int) x)
3923 lang_output_section_statement_type *
3924 lang_enter_output_section_statement (output_section_statement_name,
3925 address_exp, sectype, block_value,
3926 align, subalign, ebase)
3927 const char *output_section_statement_name;
3928 etree_type *address_exp;
3929 enum section_type sectype;
3930 bfd_vma block_value;
3932 etree_type *subalign;
3935 lang_output_section_statement_type *os;
3939 lang_output_section_statement_lookup (output_section_statement_name);
3941 /* Add this statement to tree. */
3943 add_statement (lang_output_section_statement_enum,
3944 output_section_statement);
3946 /* Make next things chain into subchain of this. */
3948 if (os->addr_tree == (etree_type *) NULL)
3950 os->addr_tree = address_exp;
3952 os->sectype = sectype;
3953 if (sectype != noload_section)
3954 os->flags = SEC_NO_FLAGS;
3956 os->flags = SEC_NEVER_LOAD;
3957 os->block_value = block_value ? block_value : 1;
3958 stat_ptr = &os->children;
3960 os->subsection_alignment =
3961 topower (exp_get_value_int (subalign, -1, "subsection alignment", 0));
3962 os->section_alignment =
3963 topower (exp_get_value_int (align, -1, "section alignment", 0));
3965 os->load_base = ebase;
3972 lang_output_statement_type *new =
3973 new_stat (lang_output_statement, stat_ptr);
3975 new->name = output_filename;
3978 /* Reset the current counters in the regions. */
3981 reset_memory_regions ()
3983 lang_memory_region_type *p = lang_memory_region_list;
3985 for (p = lang_memory_region_list;
3986 p != (lang_memory_region_type *) NULL;
3989 p->old_length = (bfd_size_type) (p->current - p->origin);
3990 p->current = p->origin;
3994 /* Expand a wild statement for a particular FILE, marking its sections KEEP
3995 as needed. SECTION may be NULL, in which case it is a wild card. */
3998 gc_section_callback (ptr, section, file, data)
3999 lang_wild_statement_type *ptr;
4001 lang_input_statement_type *file ATTRIBUTE_UNUSED;
4002 PTR data ATTRIBUTE_UNUSED;
4004 /* If the wild pattern was marked KEEP, the member sections
4005 should be as well. */
4006 if (ptr->keep_sections)
4007 section->flags |= SEC_KEEP;
4010 /* Handle a wild statement, marking it against GC. SECTION or FILE or both
4011 may be NULL, indicating that it is a wildcard. */
4014 lang_gc_wild (s, section, file)
4015 lang_wild_statement_type *s;
4016 const char *section;
4019 walk_wild (s, section, file, gc_section_callback, NULL);
4022 /* Iterate over sections marking them against GC. */
4025 lang_gc_sections_1 (s)
4026 lang_statement_union_type *s;
4028 for (; s != (lang_statement_union_type *) NULL; s = s->next)
4030 switch (s->header.type)
4032 case lang_wild_statement_enum:
4033 lang_gc_wild (&s->wild_statement,
4034 s->wild_statement.section_name,
4035 s->wild_statement.filename);
4037 case lang_constructors_statement_enum:
4038 lang_gc_sections_1 (constructor_list.head);
4040 case lang_output_section_statement_enum:
4041 lang_gc_sections_1 (s->output_section_statement.children.head);
4043 case lang_group_statement_enum:
4044 lang_gc_sections_1 (s->group_statement.children.head);
4055 struct bfd_link_hash_entry *h;
4056 ldlang_undef_chain_list_type *ulist, fake_list_start;
4058 /* Keep all sections so marked in the link script. */
4060 lang_gc_sections_1 (statement_list.head);
4062 /* Keep all sections containing symbols undefined on the command-line.
4063 Handle the entry symbol at the same time. */
4065 if (entry_symbol != NULL)
4067 fake_list_start.next = ldlang_undef_chain_list_head;
4068 fake_list_start.name = (char *) entry_symbol;
4069 ulist = &fake_list_start;
4072 ulist = ldlang_undef_chain_list_head;
4074 for (; ulist; ulist = ulist->next)
4076 h = bfd_link_hash_lookup (link_info.hash, ulist->name,
4077 false, false, false);
4079 if (h != (struct bfd_link_hash_entry *) NULL
4080 && (h->type == bfd_link_hash_defined
4081 || h->type == bfd_link_hash_defweak)
4082 && ! bfd_is_abs_section (h->u.def.section))
4084 h->u.def.section->flags |= SEC_KEEP;
4088 bfd_gc_sections (output_bfd, &link_info);
4094 lang_reasonable_defaults ();
4095 current_target = default_target;
4097 /* Open the output file. */
4098 lang_for_each_statement (ldlang_open_output);
4100 ldemul_create_output_section_statements ();
4102 /* Add to the hash table all undefineds on the command line. */
4103 lang_place_undefineds ();
4105 already_linked_table_init ();
4107 /* Create a bfd for each input file. */
4108 current_target = default_target;
4109 open_input_bfds (statement_list.head, false);
4111 ldemul_after_open ();
4113 already_linked_table_free ();
4115 /* Make sure that we're not mixing architectures. We call this
4116 after all the input files have been opened, but before we do any
4117 other processing, so that any operations merge_private_bfd_data
4118 does on the output file will be known during the rest of the
4122 /* Handle .exports instead of a version script if we're told to do so. */
4123 if (command_line.version_exports_section)
4124 lang_do_version_exports_section ();
4126 /* Build all sets based on the information gathered from the input
4128 ldctor_build_sets ();
4130 /* Remove unreferenced sections if asked to. */
4131 if (command_line.gc_sections)
4132 lang_gc_sections ();
4134 /* Size up the common data. */
4137 /* Run through the contours of the script and attach input sections
4138 to the correct output sections. */
4139 map_input_to_output_sections (statement_list.head, (char *) NULL,
4140 (lang_output_section_statement_type *) NULL);
4142 /* Find any sections not attached explicitly and handle them. */
4143 lang_place_orphans ();
4145 ldemul_before_allocation ();
4147 /* We must record the program headers before we try to fix the
4148 section positions, since they will affect SIZEOF_HEADERS. */
4149 lang_record_phdrs ();
4151 /* Now run around and relax if we can. */
4152 if (command_line.relax)
4154 /* First time round is a trial run to get the 'worst case'
4155 addresses of the objects if there was no relaxing. */
4156 lang_size_sections (statement_list.head,
4158 &(statement_list.head), 0, (bfd_vma) 0, false);
4160 /* Keep relaxing until bfd_relax_section gives up. */
4163 reset_memory_regions ();
4165 relax_again = false;
4167 /* Note: pe-dll.c does something like this also. If you find
4168 you need to change this code, you probably need to change
4169 pe-dll.c also. DJ */
4171 /* Do all the assignments with our current guesses as to
4173 lang_do_assignments (statement_list.head,
4175 (fill_type) 0, (bfd_vma) 0);
4177 /* Perform another relax pass - this time we know where the
4178 globals are, so can make better guess. */
4179 lang_size_sections (statement_list.head,
4181 &(statement_list.head), 0, (bfd_vma) 0, true);
4183 while (relax_again);
4187 /* Size up the sections. */
4188 lang_size_sections (statement_list.head,
4190 &(statement_list.head), 0, (bfd_vma) 0, false);
4193 /* See if anything special should be done now we know how big
4195 ldemul_after_allocation ();
4197 /* Fix any .startof. or .sizeof. symbols. */
4198 lang_set_startof ();
4200 /* Do all the assignments, now that we know the final resting places
4201 of all the symbols. */
4203 lang_do_assignments (statement_list.head,
4205 (fill_type) 0, (bfd_vma) 0);
4207 /* Make sure that the section addresses make sense. */
4208 if (! link_info.relocateable
4209 && command_line.check_section_addresses)
4210 lang_check_section_addresses ();
4218 /* EXPORTED TO YACC */
4221 lang_add_wild (section_name, sections_sorted, filename, filenames_sorted,
4222 keep_sections, exclude_filename_list)
4223 const char *const section_name;
4224 boolean sections_sorted;
4225 const char *const filename;
4226 boolean filenames_sorted;
4227 boolean keep_sections;
4228 struct name_list *exclude_filename_list;
4230 lang_wild_statement_type *new = new_stat (lang_wild_statement,
4233 if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0)
4235 placed_commons = true;
4237 if (filename != NULL && ! wildcardp (filename))
4239 lang_has_input_file = true;
4241 new->section_name = section_name;
4242 new->sections_sorted = sections_sorted;
4243 new->filename = filename;
4244 new->filenames_sorted = filenames_sorted;
4245 new->keep_sections = keep_sections;
4246 new->exclude_filename_list = exclude_filename_list;
4247 lang_list_init (&new->children);
4251 lang_section_start (name, address)
4253 etree_type *address;
4255 lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr);
4257 ad->section_name = name;
4258 ad->address = address;
4261 /* Set the start symbol to NAME. CMDLINE is nonzero if this is called
4262 because of a -e argument on the command line, or zero if this is
4263 called by ENTRY in a linker script. Command line arguments take
4267 lang_add_entry (name, cmdline)
4271 if (entry_symbol == NULL
4273 || ! entry_from_cmdline)
4275 entry_symbol = name;
4276 entry_from_cmdline = cmdline;
4281 lang_add_target (name)
4284 lang_target_statement_type *new = new_stat (lang_target_statement,
4300 map_option_f = true;
4311 lang_fill_statement_type *new = new_stat (lang_fill_statement,
4318 lang_add_data (type, exp)
4320 union etree_union *exp;
4323 lang_data_statement_type *new = new_stat (lang_data_statement,
4331 /* Create a new reloc statement. RELOC is the BFD relocation type to
4332 generate. HOWTO is the corresponding howto structure (we could
4333 look this up, but the caller has already done so). SECTION is the
4334 section to generate a reloc against, or NAME is the name of the
4335 symbol to generate a reloc against. Exactly one of SECTION and
4336 NAME must be NULL. ADDEND is an expression for the addend. */
4339 lang_add_reloc (reloc, howto, section, name, addend)
4340 bfd_reloc_code_real_type reloc;
4341 reloc_howto_type *howto;
4344 union etree_union *addend;
4346 lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
4350 p->section = section;
4352 p->addend_exp = addend;
4354 p->addend_value = 0;
4355 p->output_section = NULL;
4359 lang_assignment_statement_type *
4360 lang_add_assignment (exp)
4363 lang_assignment_statement_type *new = new_stat (lang_assignment_statement,
4371 lang_add_attribute (attribute)
4372 enum statement_enum attribute;
4374 new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr);
4381 if (startup_file != (char *) NULL)
4383 einfo (_("%P%Fmultiple STARTUP files\n"));
4385 first_file->filename = name;
4386 first_file->local_sym_name = name;
4387 first_file->real = true;
4389 startup_file = name;
4396 lang_float_flag = maybe;
4400 lang_leave_output_section_statement (fill, memspec, phdrs, lma_memspec)
4402 const char *memspec;
4403 struct lang_output_section_phdr_list *phdrs;
4404 const char *lma_memspec;
4406 current_section->fill = fill;
4407 current_section->region = lang_memory_region_lookup (memspec);
4408 if (strcmp (lma_memspec, "*default*") != 0)
4410 current_section->lma_region = lang_memory_region_lookup (lma_memspec);
4411 /* If no runtime region has been given, but the load region has
4412 been, use the load region. */
4413 if (strcmp (memspec, "*default*") == 0)
4414 current_section->region = lang_memory_region_lookup (lma_memspec);
4416 current_section->phdrs = phdrs;
4417 stat_ptr = &statement_list;
4420 /* Create an absolute symbol with the given name with the value of the
4421 address of first byte of the section named.
4423 If the symbol already exists, then do nothing. */
4426 lang_abs_symbol_at_beginning_of (secname, name)
4427 const char *secname;
4430 struct bfd_link_hash_entry *h;
4432 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
4433 if (h == (struct bfd_link_hash_entry *) NULL)
4434 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
4436 if (h->type == bfd_link_hash_new
4437 || h->type == bfd_link_hash_undefined)
4441 h->type = bfd_link_hash_defined;
4443 sec = bfd_get_section_by_name (output_bfd, secname);
4444 if (sec == (asection *) NULL)
4447 h->u.def.value = bfd_get_section_vma (output_bfd, sec);
4449 h->u.def.section = bfd_abs_section_ptr;
4453 /* Create an absolute symbol with the given name with the value of the
4454 address of the first byte after the end of the section named.
4456 If the symbol already exists, then do nothing. */
4459 lang_abs_symbol_at_end_of (secname, name)
4460 const char *secname;
4463 struct bfd_link_hash_entry *h;
4465 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
4466 if (h == (struct bfd_link_hash_entry *) NULL)
4467 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
4469 if (h->type == bfd_link_hash_new
4470 || h->type == bfd_link_hash_undefined)
4474 h->type = bfd_link_hash_defined;
4476 sec = bfd_get_section_by_name (output_bfd, secname);
4477 if (sec == (asection *) NULL)
4480 h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
4481 + bfd_section_size (output_bfd, sec) /
4482 bfd_octets_per_byte (output_bfd));
4484 h->u.def.section = bfd_abs_section_ptr;
4489 lang_statement_append (list, element, field)
4490 lang_statement_list_type *list;
4491 lang_statement_union_type *element;
4492 lang_statement_union_type **field;
4494 *(list->tail) = element;
4498 /* Set the output format type. -oformat overrides scripts. */
4501 lang_add_output_format (format, big, little, from_script)
4507 if (output_target == NULL || !from_script)
4509 if (command_line.endian == ENDIAN_BIG
4512 else if (command_line.endian == ENDIAN_LITTLE
4516 output_target = format;
4520 /* Enter a group. This creates a new lang_group_statement, and sets
4521 stat_ptr to build new statements within the group. */
4526 lang_group_statement_type *g;
4528 g = new_stat (lang_group_statement, stat_ptr);
4529 lang_list_init (&g->children);
4530 stat_ptr = &g->children;
4533 /* Leave a group. This just resets stat_ptr to start writing to the
4534 regular list of statements again. Note that this will not work if
4535 groups can occur inside anything else which can adjust stat_ptr,
4536 but currently they can't. */
4541 stat_ptr = &statement_list;
4544 /* Add a new program header. This is called for each entry in a PHDRS
4545 command in a linker script. */
4548 lang_new_phdr (name, type, filehdr, phdrs, at, flags)
4556 struct lang_phdr *n, **pp;
4558 n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
4561 n->type = exp_get_value_int (type, 0, "program header type",
4562 lang_final_phase_enum);
4563 n->filehdr = filehdr;
4568 for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
4573 /* Record the program header information in the output BFD. FIXME: We
4574 should not be calling an ELF specific function here. */
4577 lang_record_phdrs ()
4581 struct lang_output_section_phdr_list *last;
4582 struct lang_phdr *l;
4583 lang_statement_union_type *u;
4586 secs = (asection **) xmalloc (alc * sizeof (asection *));
4588 for (l = lang_phdr_list; l != NULL; l = l->next)
4595 for (u = lang_output_section_statement.head;
4597 u = u->output_section_statement.next)
4599 lang_output_section_statement_type *os;
4600 struct lang_output_section_phdr_list *pl;
4602 os = &u->output_section_statement;
4609 if (os->sectype == noload_section
4610 || os->bfd_section == NULL
4611 || (os->bfd_section->flags & SEC_ALLOC) == 0)
4616 if (os->bfd_section == NULL)
4619 for (; pl != NULL; pl = pl->next)
4621 if (strcmp (pl->name, l->name) == 0)
4626 secs = ((asection **)
4627 xrealloc (secs, alc * sizeof (asection *)));
4629 secs[c] = os->bfd_section;
4636 if (l->flags == NULL)
4639 flags = exp_get_vma (l->flags, 0, "phdr flags",
4640 lang_final_phase_enum);
4645 at = exp_get_vma (l->at, 0, "phdr load address",
4646 lang_final_phase_enum);
4648 if (! bfd_record_phdr (output_bfd, l->type,
4649 l->flags == NULL ? false : true,
4651 l->at == NULL ? false : true,
4652 at, l->filehdr, l->phdrs, c, secs))
4653 einfo (_("%F%P: bfd_record_phdr failed: %E\n"));
4658 /* Make sure all the phdr assignments succeeded. */
4659 for (u = lang_output_section_statement.head;
4661 u = u->output_section_statement.next)
4663 struct lang_output_section_phdr_list *pl;
4665 if (u->output_section_statement.bfd_section == NULL)
4668 for (pl = u->output_section_statement.phdrs;
4671 if (! pl->used && strcmp (pl->name, "NONE") != 0)
4672 einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"),
4673 u->output_section_statement.name, pl->name);
4677 /* Record a list of sections which may not be cross referenced. */
4680 lang_add_nocrossref (l)
4681 struct lang_nocrossref *l;
4683 struct lang_nocrossrefs *n;
4685 n = (struct lang_nocrossrefs *) xmalloc (sizeof *n);
4686 n->next = nocrossref_list;
4688 nocrossref_list = n;
4690 /* Set notice_all so that we get informed about all symbols. */
4691 link_info.notice_all = true;
4694 /* Overlay handling. We handle overlays with some static variables. */
4696 /* The overlay virtual address. */
4697 static etree_type *overlay_vma;
4699 /* The overlay load address. */
4700 static etree_type *overlay_lma;
4702 /* Whether nocrossrefs is set for this overlay. */
4703 static int overlay_nocrossrefs;
4705 /* An expression for the maximum section size seen so far. */
4706 static etree_type *overlay_max;
4708 /* A list of all the sections in this overlay. */
4710 struct overlay_list {
4711 struct overlay_list *next;
4712 lang_output_section_statement_type *os;
4715 static struct overlay_list *overlay_list;
4717 /* Start handling an overlay. */
4720 lang_enter_overlay (vma_expr, lma_expr, nocrossrefs)
4721 etree_type *vma_expr;
4722 etree_type *lma_expr;
4725 /* The grammar should prevent nested overlays from occurring. */
4726 ASSERT (overlay_vma == NULL
4727 && overlay_lma == NULL
4728 && overlay_list == NULL
4729 && overlay_max == NULL);
4731 overlay_vma = vma_expr;
4732 overlay_lma = lma_expr;
4733 overlay_nocrossrefs = nocrossrefs;
4736 /* Start a section in an overlay. We handle this by calling
4737 lang_enter_output_section_statement with the correct VMA and LMA. */
4740 lang_enter_overlay_section (name)
4743 struct overlay_list *n;
4746 lang_enter_output_section_statement (name, overlay_vma, normal_section,
4747 0, 0, 0, overlay_lma);
4749 /* If this is the first section, then base the VMA and LMA of future
4750 sections on this one. This will work correctly even if `.' is
4751 used in the addresses. */
4752 if (overlay_list == NULL)
4754 overlay_vma = exp_nameop (ADDR, name);
4755 overlay_lma = exp_nameop (LOADADDR, name);
4758 /* Remember the section. */
4759 n = (struct overlay_list *) xmalloc (sizeof *n);
4760 n->os = current_section;
4761 n->next = overlay_list;
4764 size = exp_nameop (SIZEOF, name);
4766 /* Adjust the LMA for the next section. */
4767 overlay_lma = exp_binop ('+', overlay_lma, size);
4769 /* Arrange to work out the maximum section end address. */
4770 if (overlay_max == NULL)
4773 overlay_max = exp_binop (MAX_K, overlay_max, size);
4776 /* Finish a section in an overlay. There isn't any special to do
4780 lang_leave_overlay_section (fill, phdrs)
4782 struct lang_output_section_phdr_list *phdrs;
4789 name = current_section->name;
4791 lang_leave_output_section_statement (fill, "*default*",
4792 phdrs, "*default*");
4794 /* Define the magic symbols. */
4796 clean = xmalloc (strlen (name) + 1);
4798 for (s1 = name; *s1 != '\0'; s1++)
4799 if (isalnum ((unsigned char) *s1) || *s1 == '_')
4803 buf = xmalloc (strlen (clean) + sizeof "__load_start_");
4804 sprintf (buf, "__load_start_%s", clean);
4805 lang_add_assignment (exp_assop ('=', buf,
4806 exp_nameop (LOADADDR, name)));
4808 buf = xmalloc (strlen (clean) + sizeof "__load_stop_");
4809 sprintf (buf, "__load_stop_%s", clean);
4810 lang_add_assignment (exp_assop ('=', buf,
4812 exp_nameop (LOADADDR, name),
4813 exp_nameop (SIZEOF, name))));
4818 /* Finish an overlay. If there are any overlay wide settings, this
4819 looks through all the sections in the overlay and sets them. */
4822 lang_leave_overlay (fill, memspec, phdrs, lma_memspec)
4824 const char *memspec;
4825 struct lang_output_section_phdr_list *phdrs;
4826 const char *lma_memspec;
4828 lang_memory_region_type *region;
4829 lang_memory_region_type *lma_region;
4830 struct overlay_list *l;
4831 struct lang_nocrossref *nocrossref;
4833 if (memspec == NULL)
4836 region = lang_memory_region_lookup (memspec);
4838 if (lma_memspec == NULL)
4841 lma_region = lang_memory_region_lookup (lma_memspec);
4848 struct overlay_list *next;
4850 if (fill != 0 && l->os->fill == 0)
4852 if (region != NULL && l->os->region == NULL)
4853 l->os->region = region;
4854 /* We only set lma_region for the first overlay section, as
4855 subsequent overlay sections will have load_base set relative
4856 to the first section. Also, don't set lma_region if
4857 load_base is specified. FIXME: There should really be a test
4858 that `AT ( LDADDR )' doesn't conflict with `AT >LMA_REGION'
4859 rather than letting LDADDR simply override LMA_REGION. */
4860 if (lma_region != NULL && l->os->lma_region == NULL
4861 && l->next == NULL && l->os->load_base == NULL)
4862 l->os->lma_region = lma_region;
4863 if (phdrs != NULL && l->os->phdrs == NULL)
4864 l->os->phdrs = phdrs;
4866 if (overlay_nocrossrefs)
4868 struct lang_nocrossref *nc;
4870 nc = (struct lang_nocrossref *) xmalloc (sizeof *nc);
4871 nc->name = l->os->name;
4872 nc->next = nocrossref;
4881 if (nocrossref != NULL)
4882 lang_add_nocrossref (nocrossref);
4884 /* Update . for the end of the overlay. */
4885 lang_add_assignment (exp_assop ('=', ".",
4886 exp_binop ('+', overlay_vma, overlay_max)));
4890 overlay_nocrossrefs = 0;
4891 overlay_list = NULL;
4895 /* Version handling. This is only useful for ELF. */
4897 /* This global variable holds the version tree that we build. */
4899 struct bfd_elf_version_tree *lang_elf_version_info;
4902 lang_vers_match_lang_c (expr, sym)
4903 struct bfd_elf_version_expr *expr;
4906 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
4908 return fnmatch (expr->pattern, sym, 0) == 0;
4912 lang_vers_match_lang_cplusplus (expr, sym)
4913 struct bfd_elf_version_expr *expr;
4919 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
4922 alt_sym = cplus_demangle (sym, /* DMGL_NO_TPARAMS */ 0);
4925 /* cplus_demangle (also) returns NULL when it is not a C++ symbol.
4926 Should we early out false in this case? */
4927 result = fnmatch (expr->pattern, sym, 0) == 0;
4931 result = fnmatch (expr->pattern, alt_sym, 0) == 0;
4939 lang_vers_match_lang_java (expr, sym)
4940 struct bfd_elf_version_expr *expr;
4946 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
4949 alt_sym = cplus_demangle (sym, DMGL_JAVA);
4952 /* cplus_demangle (also) returns NULL when it is not a Java symbol.
4953 Should we early out false in this case? */
4954 result = fnmatch (expr->pattern, sym, 0) == 0;
4958 result = fnmatch (expr->pattern, alt_sym, 0) == 0;
4965 /* This is called for each variable name or match expression. */
4967 struct bfd_elf_version_expr *
4968 lang_new_vers_regex (orig, new, lang)
4969 struct bfd_elf_version_expr *orig;
4973 struct bfd_elf_version_expr *ret;
4975 ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret);
4979 if (lang == NULL || strcasecmp (lang, "C") == 0)
4980 ret->match = lang_vers_match_lang_c;
4981 else if (strcasecmp (lang, "C++") == 0)
4982 ret->match = lang_vers_match_lang_cplusplus;
4983 else if (strcasecmp (lang, "Java") == 0)
4984 ret->match = lang_vers_match_lang_java;
4987 einfo (_("%X%P: unknown language `%s' in version information\n"),
4989 ret->match = lang_vers_match_lang_c;
4995 /* This is called for each set of variable names and match
4998 struct bfd_elf_version_tree *
4999 lang_new_vers_node (globals, locals)
5000 struct bfd_elf_version_expr *globals;
5001 struct bfd_elf_version_expr *locals;
5003 struct bfd_elf_version_tree *ret;
5005 ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret);
5009 ret->globals = globals;
5010 ret->locals = locals;
5012 ret->name_indx = (unsigned int) -1;
5017 /* This static variable keeps track of version indices. */
5019 static int version_index;
5021 /* This is called when we know the name and dependencies of the
5025 lang_register_vers_node (name, version, deps)
5027 struct bfd_elf_version_tree *version;
5028 struct bfd_elf_version_deps *deps;
5030 struct bfd_elf_version_tree *t, **pp;
5031 struct bfd_elf_version_expr *e1;
5033 /* Make sure this node has a unique name. */
5034 for (t = lang_elf_version_info; t != NULL; t = t->next)
5035 if (strcmp (t->name, name) == 0)
5036 einfo (_("%X%P: duplicate version tag `%s'\n"), name);
5038 /* Check the global and local match names, and make sure there
5039 aren't any duplicates. */
5041 for (e1 = version->globals; e1 != NULL; e1 = e1->next)
5043 for (t = lang_elf_version_info; t != NULL; t = t->next)
5045 struct bfd_elf_version_expr *e2;
5047 for (e2 = t->locals; e2 != NULL; e2 = e2->next)
5048 if (strcmp (e1->pattern, e2->pattern) == 0)
5049 einfo (_("%X%P: duplicate expression `%s' in version information\n"),
5054 for (e1 = version->locals; e1 != NULL; e1 = e1->next)
5056 for (t = lang_elf_version_info; t != NULL; t = t->next)
5058 struct bfd_elf_version_expr *e2;
5060 for (e2 = t->globals; e2 != NULL; e2 = e2->next)
5061 if (strcmp (e1->pattern, e2->pattern) == 0)
5062 einfo (_("%X%P: duplicate expression `%s' in version information\n"),
5067 version->deps = deps;
5068 version->name = name;
5070 version->vernum = version_index;
5072 for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next)
5077 /* This is called when we see a version dependency. */
5079 struct bfd_elf_version_deps *
5080 lang_add_vers_depend (list, name)
5081 struct bfd_elf_version_deps *list;
5084 struct bfd_elf_version_deps *ret;
5085 struct bfd_elf_version_tree *t;
5087 ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret);
5090 for (t = lang_elf_version_info; t != NULL; t = t->next)
5092 if (strcmp (t->name, name) == 0)
5094 ret->version_needed = t;
5099 einfo (_("%X%P: unable to find version dependency `%s'\n"), name);
5105 lang_do_version_exports_section ()
5107 struct bfd_elf_version_expr *greg = NULL, *lreg;
5109 LANG_FOR_EACH_INPUT_STATEMENT (is)
5111 asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports");
5118 len = bfd_section_size (is->the_bfd, sec);
5119 contents = xmalloc (len);
5120 if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len))
5121 einfo (_("%X%P: unable to read .exports section contents"), sec);
5124 while (p < contents + len)
5126 greg = lang_new_vers_regex (greg, p, NULL);
5127 p = strchr (p, '\0') + 1;
5130 /* Do not free the contents, as we used them creating the regex. */
5132 /* Do not include this section in the link. */
5133 bfd_set_section_flags (is->the_bfd, sec,
5134 bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE);
5137 lreg = lang_new_vers_regex (NULL, "*", NULL);
5138 lang_register_vers_node (command_line.version_exports_section,
5139 lang_new_vers_node (greg, lreg), NULL);
5143 lang_add_unique (name)
5146 struct unique_sections *ent;
5148 for (ent = unique_section_list; ent; ent = ent->next)
5149 if (strcmp (ent->name, name) == 0)
5152 ent = (struct unique_sections *) xmalloc (sizeof *ent);
5153 ent->name = xstrdup (name);
5154 ent->next = unique_section_list;
5155 unique_section_list = ent;