1 /* Linker command language support.
2 Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
3 2001, 2002, 2003, 2004, 2005
4 Free Software Foundation, Inc.
6 This file is part of GLD, the Gnu Linker.
8 GLD is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GLD is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GLD; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
25 #include "libiberty.h"
26 #include "safe-ctype.h"
45 #define offsetof(TYPE, MEMBER) ((size_t) & (((TYPE*) 0)->MEMBER))
48 /* Locals variables. */
49 static struct obstack stat_obstack;
50 static struct obstack map_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 bfd_boolean placed_commons = FALSE;
57 static lang_output_section_statement_type *default_common_section;
58 static bfd_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;
65 static struct bfd_hash_table lang_definedness_table;
67 /* Forward declarations. */
68 static void exp_init_os (etree_type *);
69 static void init_map_userdata (bfd *, asection *, void *);
70 static lang_input_statement_type *lookup_name (const char *);
71 static bfd_boolean load_symbols (lang_input_statement_type *,
72 lang_statement_list_type *);
73 static struct bfd_hash_entry *lang_definedness_newfunc
74 (struct bfd_hash_entry *, struct bfd_hash_table *, const char *);
75 static void insert_undefined (const char *);
76 static void print_all_symbols (asection *);
77 static bfd_boolean sort_def_symbol (struct bfd_link_hash_entry *, void *);
78 static void print_statement (lang_statement_union_type *,
79 lang_output_section_statement_type *);
80 static void print_statement_list (lang_statement_union_type *,
81 lang_output_section_statement_type *);
82 static void print_statements (void);
83 static bfd_boolean lang_one_common (struct bfd_link_hash_entry *, void *);
84 static void lang_record_phdrs (void);
85 static void lang_do_version_exports_section (void);
87 typedef void (*callback_t) (lang_wild_statement_type *, struct wildcard_list *,
88 asection *, lang_input_statement_type *, void *);
90 /* Exported variables. */
91 lang_output_section_statement_type *abs_output_section;
92 lang_statement_list_type lang_output_section_statement;
93 lang_statement_list_type *stat_ptr = &statement_list;
94 lang_statement_list_type file_chain = { NULL, NULL };
95 struct bfd_sym_chain entry_symbol = { NULL, NULL };
96 const char *entry_section = ".text";
97 bfd_boolean entry_from_cmdline;
98 bfd_boolean lang_has_input_file = FALSE;
99 bfd_boolean had_output_filename = FALSE;
100 bfd_boolean lang_float_flag = FALSE;
101 bfd_boolean delete_output_file_on_failure = FALSE;
102 struct lang_nocrossrefs *nocrossref_list;
103 struct unique_sections *unique_section_list;
104 static bfd_boolean ldlang_sysrooted_script = FALSE;
105 int lang_statement_iteration = 0;
107 etree_type *base; /* Relocation base - or null */
109 /* Return TRUE if the PATTERN argument is a wildcard pattern.
110 Although backslashes are treated specially if a pattern contains
111 wildcards, we do not consider the mere presence of a backslash to
112 be enough to cause the pattern to be treated as a wildcard.
113 That lets us handle DOS filenames more naturally. */
114 #define wildcardp(pattern) (strpbrk ((pattern), "?*[") != NULL)
116 #define new_stat(x, y) \
117 (x##_type *) new_statement (x##_enum, sizeof (x##_type), y)
119 #define outside_section_address(q) \
120 ((q)->output_offset + (q)->output_section->vma)
122 #define outside_symbol_address(q) \
123 ((q)->value + outside_section_address (q->section))
125 #define SECTION_NAME_MAP_LENGTH (16)
128 stat_alloc (size_t size)
130 return obstack_alloc (&stat_obstack, size);
134 unique_section_p (const asection *sec)
136 struct unique_sections *unam;
139 if (link_info.relocatable
140 && sec->owner != NULL
141 && bfd_is_group_section (sec->owner, sec))
145 for (unam = unique_section_list; unam; unam = unam->next)
146 if (wildcardp (unam->name)
147 ? fnmatch (unam->name, secnam, 0) == 0
148 : strcmp (unam->name, secnam) == 0)
156 /* Generic traversal routines for finding matching sections. */
159 walk_wild_section (lang_wild_statement_type *ptr,
160 lang_input_statement_type *file,
166 if (file->just_syms_flag)
169 for (s = file->the_bfd->sections; s != NULL; s = s->next)
171 struct wildcard_list *sec;
173 sec = ptr->section_list;
175 (*callback) (ptr, sec, s, file, data);
179 bfd_boolean skip = FALSE;
180 struct name_list *list_tmp;
182 /* Don't process sections from files which were
184 for (list_tmp = sec->spec.exclude_name_list;
186 list_tmp = list_tmp->next)
188 if (wildcardp (list_tmp->name))
189 skip = fnmatch (list_tmp->name, file->filename, 0) == 0;
191 skip = strcmp (list_tmp->name, file->filename) == 0;
193 /* If this file is part of an archive, and the archive is
194 excluded, exclude this file. */
195 if (! skip && file->the_bfd != NULL
196 && file->the_bfd->my_archive != NULL
197 && file->the_bfd->my_archive->filename != NULL)
199 if (wildcardp (list_tmp->name))
200 skip = fnmatch (list_tmp->name,
201 file->the_bfd->my_archive->filename,
204 skip = strcmp (list_tmp->name,
205 file->the_bfd->my_archive->filename) == 0;
212 if (!skip && sec->spec.name != NULL)
214 const char *sname = bfd_get_section_name (file->the_bfd, s);
216 if (wildcardp (sec->spec.name))
217 skip = fnmatch (sec->spec.name, sname, 0) != 0;
219 skip = strcmp (sec->spec.name, sname) != 0;
223 (*callback) (ptr, sec, s, file, data);
230 /* Handle a wild statement for a single file F. */
233 walk_wild_file (lang_wild_statement_type *s,
234 lang_input_statement_type *f,
238 if (f->the_bfd == NULL
239 || ! bfd_check_format (f->the_bfd, bfd_archive))
240 walk_wild_section (s, f, callback, data);
245 /* This is an archive file. We must map each member of the
246 archive separately. */
247 member = bfd_openr_next_archived_file (f->the_bfd, NULL);
248 while (member != NULL)
250 /* When lookup_name is called, it will call the add_symbols
251 entry point for the archive. For each element of the
252 archive which is included, BFD will call ldlang_add_file,
253 which will set the usrdata field of the member to the
254 lang_input_statement. */
255 if (member->usrdata != NULL)
257 walk_wild_section (s, member->usrdata, callback, data);
260 member = bfd_openr_next_archived_file (f->the_bfd, member);
266 walk_wild (lang_wild_statement_type *s, callback_t callback, void *data)
268 const char *file_spec = s->filename;
270 if (file_spec == NULL)
272 /* Perform the iteration over all files in the list. */
273 LANG_FOR_EACH_INPUT_STATEMENT (f)
275 walk_wild_file (s, f, callback, data);
278 else if (wildcardp (file_spec))
280 LANG_FOR_EACH_INPUT_STATEMENT (f)
282 if (fnmatch (file_spec, f->filename, FNM_FILE_NAME) == 0)
283 walk_wild_file (s, f, callback, data);
288 lang_input_statement_type *f;
290 /* Perform the iteration over a single file. */
291 f = lookup_name (file_spec);
293 walk_wild_file (s, f, callback, data);
297 /* lang_for_each_statement walks the parse tree and calls the provided
298 function for each node. */
301 lang_for_each_statement_worker (void (*func) (lang_statement_union_type *),
302 lang_statement_union_type *s)
304 for (; s != NULL; s = s->header.next)
308 switch (s->header.type)
310 case lang_constructors_statement_enum:
311 lang_for_each_statement_worker (func, constructor_list.head);
313 case lang_output_section_statement_enum:
314 lang_for_each_statement_worker
315 (func, s->output_section_statement.children.head);
317 case lang_wild_statement_enum:
318 lang_for_each_statement_worker (func,
319 s->wild_statement.children.head);
321 case lang_group_statement_enum:
322 lang_for_each_statement_worker (func,
323 s->group_statement.children.head);
325 case lang_data_statement_enum:
326 case lang_reloc_statement_enum:
327 case lang_object_symbols_statement_enum:
328 case lang_output_statement_enum:
329 case lang_target_statement_enum:
330 case lang_input_section_enum:
331 case lang_input_statement_enum:
332 case lang_assignment_statement_enum:
333 case lang_padding_statement_enum:
334 case lang_address_statement_enum:
335 case lang_fill_statement_enum:
345 lang_for_each_statement (void (*func) (lang_statement_union_type *))
347 lang_for_each_statement_worker (func, statement_list.head);
350 /*----------------------------------------------------------------------*/
353 lang_list_init (lang_statement_list_type *list)
356 list->tail = &list->head;
359 /* Build a new statement node for the parse tree. */
361 static lang_statement_union_type *
362 new_statement (enum statement_enum type,
364 lang_statement_list_type *list)
366 lang_statement_union_type *new;
368 new = stat_alloc (size);
369 new->header.type = type;
370 new->header.next = NULL;
371 lang_statement_append (list, new, &new->header.next);
375 /* Build a new input file node for the language. There are several
376 ways in which we treat an input file, eg, we only look at symbols,
377 or prefix it with a -l etc.
379 We can be supplied with requests for input files more than once;
380 they may, for example be split over several lines like foo.o(.text)
381 foo.o(.data) etc, so when asked for a file we check that we haven't
382 got it already so we don't duplicate the bfd. */
384 static lang_input_statement_type *
385 new_afile (const char *name,
386 lang_input_file_enum_type file_type,
388 bfd_boolean add_to_list)
390 lang_input_statement_type *p;
393 p = new_stat (lang_input_statement, stat_ptr);
396 p = stat_alloc (sizeof (lang_input_statement_type));
397 p->header.next = NULL;
400 lang_has_input_file = TRUE;
402 p->sysrooted = FALSE;
405 case lang_input_file_is_symbols_only_enum:
407 p->is_archive = FALSE;
409 p->local_sym_name = name;
410 p->just_syms_flag = TRUE;
411 p->search_dirs_flag = FALSE;
413 case lang_input_file_is_fake_enum:
415 p->is_archive = FALSE;
417 p->local_sym_name = name;
418 p->just_syms_flag = FALSE;
419 p->search_dirs_flag = FALSE;
421 case lang_input_file_is_l_enum:
422 p->is_archive = TRUE;
425 p->local_sym_name = concat ("-l", name, NULL);
426 p->just_syms_flag = FALSE;
427 p->search_dirs_flag = TRUE;
429 case lang_input_file_is_marker_enum:
431 p->is_archive = FALSE;
433 p->local_sym_name = name;
434 p->just_syms_flag = FALSE;
435 p->search_dirs_flag = TRUE;
437 case lang_input_file_is_search_file_enum:
438 p->sysrooted = ldlang_sysrooted_script;
440 p->is_archive = FALSE;
442 p->local_sym_name = name;
443 p->just_syms_flag = FALSE;
444 p->search_dirs_flag = TRUE;
446 case lang_input_file_is_file_enum:
448 p->is_archive = FALSE;
450 p->local_sym_name = name;
451 p->just_syms_flag = FALSE;
452 p->search_dirs_flag = FALSE;
459 p->next_real_file = NULL;
462 p->dynamic = config.dynamic_link;
463 p->add_needed = add_needed;
464 p->as_needed = as_needed;
465 p->whole_archive = whole_archive;
467 lang_statement_append (&input_file_chain,
468 (lang_statement_union_type *) p,
473 lang_input_statement_type *
474 lang_add_input_file (const char *name,
475 lang_input_file_enum_type file_type,
478 lang_has_input_file = TRUE;
479 return new_afile (name, file_type, target, TRUE);
482 /* Build enough state so that the parser can build its tree. */
487 obstack_begin (&stat_obstack, 1000);
489 stat_ptr = &statement_list;
491 lang_list_init (stat_ptr);
493 lang_list_init (&input_file_chain);
494 lang_list_init (&lang_output_section_statement);
495 lang_list_init (&file_chain);
496 first_file = lang_add_input_file (NULL, lang_input_file_is_marker_enum,
499 lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
501 abs_output_section->bfd_section = bfd_abs_section_ptr;
503 /* The value "3" is ad-hoc, somewhat related to the expected number of
504 DEFINED expressions in a linker script. For most default linker
505 scripts, there are none. Why a hash table then? Well, it's somewhat
506 simpler to re-use working machinery than using a linked list in terms
507 of code-complexity here in ld, besides the initialization which just
508 looks like other code here. */
509 if (!bfd_hash_table_init_n (&lang_definedness_table,
510 lang_definedness_newfunc, 3))
511 einfo (_("%P%F: out of memory during initialization"));
513 /* Callers of exp_fold_tree need to increment this. */
514 lang_statement_iteration = 0;
517 /*----------------------------------------------------------------------
518 A region is an area of memory declared with the
519 MEMORY { name:org=exp, len=exp ... }
522 We maintain a list of all the regions here.
524 If no regions are specified in the script, then the default is used
525 which is created when looked up to be the entire data space.
527 If create is true we are creating a region inside a MEMORY block.
528 In this case it is probably an error to create a region that has
529 already been created. If we are not inside a MEMORY block it is
530 dubious to use an undeclared region name (except DEFAULT_MEMORY_REGION)
531 and so we issue a warning. */
533 static lang_memory_region_type *lang_memory_region_list;
534 static lang_memory_region_type **lang_memory_region_list_tail
535 = &lang_memory_region_list;
537 lang_memory_region_type *
538 lang_memory_region_lookup (const char *const name, bfd_boolean create)
540 lang_memory_region_type *p;
541 lang_memory_region_type *new;
543 /* NAME is NULL for LMA memspecs if no region was specified. */
547 for (p = lang_memory_region_list; p != NULL; p = p->next)
548 if (strcmp (p->name, name) == 0)
551 einfo (_("%P:%S: warning: redeclaration of memory region '%s'\n"),
556 if (!create && strcmp (name, DEFAULT_MEMORY_REGION))
557 einfo (_("%P:%S: warning: memory region %s not declared\n"), name);
559 new = stat_alloc (sizeof (lang_memory_region_type));
561 new->name = xstrdup (name);
564 *lang_memory_region_list_tail = new;
565 lang_memory_region_list_tail = &new->next;
569 new->length = ~(bfd_size_type) 0;
571 new->had_full_message = FALSE;
576 static lang_memory_region_type *
577 lang_memory_default (asection *section)
579 lang_memory_region_type *p;
581 flagword sec_flags = section->flags;
583 /* Override SEC_DATA to mean a writable section. */
584 if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC)
585 sec_flags |= SEC_DATA;
587 for (p = lang_memory_region_list; p != NULL; p = p->next)
589 if ((p->flags & sec_flags) != 0
590 && (p->not_flags & sec_flags) == 0)
595 return lang_memory_region_lookup (DEFAULT_MEMORY_REGION, FALSE);
598 static lang_output_section_statement_type *
599 lang_output_section_find_1 (const char *const name, int constraint)
601 lang_output_section_statement_type *lookup;
603 for (lookup = &lang_output_section_statement.head->output_section_statement;
605 lookup = lookup->next)
607 if (strcmp (name, lookup->name) == 0
608 && lookup->constraint != -1
609 && (constraint == 0 || constraint == lookup->constraint))
615 lang_output_section_statement_type *
616 lang_output_section_find (const char *const name)
618 return lang_output_section_find_1 (name, 0);
621 static lang_output_section_statement_type *
622 lang_output_section_statement_lookup_1 (const char *const name, int constraint)
624 lang_output_section_statement_type *lookup;
626 lookup = lang_output_section_find_1 (name, constraint);
629 lookup = new_stat (lang_output_section_statement, stat_ptr);
630 lookup->region = NULL;
631 lookup->lma_region = NULL;
633 lookup->block_value = 1;
637 lookup->bfd_section = NULL;
638 lookup->processed = 0;
639 lookup->constraint = constraint;
640 lookup->sectype = normal_section;
641 lookup->addr_tree = NULL;
642 lang_list_init (&lookup->children);
644 lookup->memspec = NULL;
646 lookup->subsection_alignment = -1;
647 lookup->section_alignment = -1;
648 lookup->load_base = NULL;
649 lookup->update_dot_tree = NULL;
650 lookup->phdrs = NULL;
652 lang_statement_append (&lang_output_section_statement,
653 (lang_statement_union_type *) lookup,
654 (lang_statement_union_type **) &lookup->next);
659 lang_output_section_statement_type *
660 lang_output_section_statement_lookup (const char *const name)
662 return lang_output_section_statement_lookup_1 (name, 0);
665 /* A variant of lang_output_section_find used by place_orphan.
666 Returns the output statement that should precede a new output
667 statement for SEC. If an exact match is found on certain flags,
670 lang_output_section_statement_type *
671 lang_output_section_find_by_flags (const asection *sec,
672 lang_output_section_statement_type **exact)
674 lang_output_section_statement_type *first, *look, *found;
677 /* We know the first statement on this list is *ABS*. May as well
679 first = &lang_output_section_statement.head->output_section_statement;
682 /* First try for an exact match. */
684 for (look = first; look; look = look->next)
687 if (look->bfd_section != NULL)
688 flags = look->bfd_section->flags;
690 if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_READONLY
691 | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
700 if (sec->flags & SEC_CODE)
702 /* Try for a rw code section. */
703 for (look = first; look; look = look->next)
706 if (look->bfd_section != NULL)
707 flags = look->bfd_section->flags;
709 if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
710 | SEC_CODE | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
716 if (sec->flags & (SEC_READONLY | SEC_THREAD_LOCAL))
718 /* .rodata can go after .text, .sdata2 after .rodata. */
719 for (look = first; look; look = look->next)
722 if (look->bfd_section != NULL)
723 flags = look->bfd_section->flags;
725 if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
727 && !(look->flags & (SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
733 if (sec->flags & SEC_SMALL_DATA)
735 /* .sdata goes after .data, .sbss after .sdata. */
736 for (look = first; look; look = look->next)
739 if (look->bfd_section != NULL)
740 flags = look->bfd_section->flags;
742 if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
744 || ((look->flags & SEC_SMALL_DATA)
745 && !(sec->flags & SEC_HAS_CONTENTS)))
751 if (sec->flags & SEC_HAS_CONTENTS)
753 /* .data goes after .rodata. */
754 for (look = first; look; look = look->next)
757 if (look->bfd_section != NULL)
758 flags = look->bfd_section->flags;
760 if (!(flags & (SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
761 | SEC_SMALL_DATA | SEC_THREAD_LOCAL)))
767 /* .bss goes last. */
768 for (look = first; look; look = look->next)
771 if (look->bfd_section != NULL)
772 flags = look->bfd_section->flags;
774 if (!(flags & SEC_ALLOC))
781 /* Find the last output section before given output statement.
782 Used by place_orphan. */
785 output_prev_sec_find (lang_output_section_statement_type *os)
787 asection *s = (asection *) NULL;
788 lang_output_section_statement_type *lookup;
790 for (lookup = &lang_output_section_statement.head->output_section_statement;
792 lookup = lookup->next)
794 if (lookup->constraint == -1)
799 if (lookup->bfd_section != NULL && lookup->bfd_section->owner != NULL)
800 s = lookup->bfd_section;
806 lang_output_section_statement_type *
807 lang_insert_orphan (lang_input_statement_type *file,
810 lang_output_section_statement_type *after,
811 struct orphan_save *place,
813 lang_statement_list_type *add_child)
815 lang_statement_list_type *old;
816 lang_statement_list_type add;
818 etree_type *load_base;
819 lang_output_section_statement_type *os;
820 lang_output_section_statement_type **os_tail;
822 /* Start building a list of statements for this section.
823 First save the current statement pointer. */
826 /* If we have found an appropriate place for the output section
827 statements for this orphan, add them to our own private list,
828 inserting them later into the global statement list. */
832 lang_list_init (stat_ptr);
836 if (config.build_constructors)
838 /* If the name of the section is representable in C, then create
839 symbols to mark the start and the end of the section. */
840 for (ps = secname; *ps != '\0'; ps++)
841 if (! ISALNUM ((unsigned char) *ps) && *ps != '_')
848 symname = (char *) xmalloc (ps - secname + sizeof "__start_" + 1);
849 symname[0] = bfd_get_symbol_leading_char (output_bfd);
850 sprintf (symname + (symname[0] != 0), "__start_%s", secname);
851 e_align = exp_unop (ALIGN_K,
852 exp_intop ((bfd_vma) 1 << s->alignment_power));
853 lang_add_assignment (exp_assop ('=', ".", e_align));
854 lang_add_assignment (exp_assop ('=', symname,
855 exp_nameop (NAME, ".")));
859 if (link_info.relocatable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0)
860 address = exp_intop (0);
863 if (after != NULL && after->load_base != NULL)
865 etree_type *lma_from_vma;
866 lma_from_vma = exp_binop ('-', after->load_base,
867 exp_nameop (ADDR, after->name));
868 load_base = exp_binop ('+', lma_from_vma,
869 exp_nameop (ADDR, secname));
872 os_tail = ((lang_output_section_statement_type **)
873 lang_output_section_statement.tail);
874 os = lang_enter_output_section_statement (secname, address, 0, NULL, NULL,
877 if (add_child == NULL)
878 add_child = &os->children;
879 lang_add_section (add_child, s, os, file);
881 lang_leave_output_section_statement (0, "*default*", NULL, NULL);
883 if (config.build_constructors && *ps == '\0')
887 /* lang_leave_ouput_section_statement resets stat_ptr.
888 Put stat_ptr back where we want it. */
892 symname = (char *) xmalloc (ps - secname + sizeof "__stop_" + 1);
893 symname[0] = bfd_get_symbol_leading_char (output_bfd);
894 sprintf (symname + (symname[0] != 0), "__stop_%s", secname);
895 lang_add_assignment (exp_assop ('=', symname,
896 exp_nameop (NAME, ".")));
899 /* Restore the global list pointer. */
903 if (after != NULL && os->bfd_section != NULL)
905 asection *snew, **pps;
907 snew = os->bfd_section;
909 /* Shuffle the bfd section list to make the output file look
910 neater. This is really only cosmetic. */
911 if (place->section == NULL
912 && after != (&lang_output_section_statement.head
913 ->output_section_statement))
915 asection *bfd_section = after->bfd_section;
917 /* If the output statement hasn't been used to place any input
918 sections (and thus doesn't have an output bfd_section),
919 look for the closest prior output statement having an
921 if (bfd_section == NULL)
922 bfd_section = output_prev_sec_find (after);
924 if (bfd_section != NULL && bfd_section != snew)
925 place->section = &bfd_section->next;
928 if (place->section == NULL)
929 place->section = &output_bfd->sections;
931 /* Unlink the section. */
932 for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next)
934 bfd_section_list_remove (output_bfd, pps);
936 /* Now tack it back on in the right place. */
937 bfd_section_list_insert (output_bfd, place->section, snew);
939 /* Save the end of this list. Further ophans of this type will
940 follow the one we've just added. */
941 place->section = &snew->next;
943 /* The following is non-cosmetic. We try to put the output
944 statements in some sort of reasonable order here, because they
945 determine the final load addresses of the orphan sections.
946 In addition, placing output statements in the wrong order may
947 require extra segments. For instance, given a typical
948 situation of all read-only sections placed in one segment and
949 following that a segment containing all the read-write
950 sections, we wouldn't want to place an orphan read/write
951 section before or amongst the read-only ones. */
952 if (add.head != NULL)
954 lang_output_section_statement_type *newly_added_os;
956 if (place->stmt == NULL)
958 lang_statement_union_type **where;
959 lang_statement_union_type **assign = NULL;
961 /* Look for a suitable place for the new statement list.
962 The idea is to skip over anything that might be inside
963 a SECTIONS {} statement in a script, before we find
964 another output_section_statement. Assignments to "dot"
965 before an output section statement are assumed to
967 for (where = &after->header.next;
969 where = &(*where)->header.next)
971 switch ((*where)->header.type)
973 case lang_assignment_statement_enum:
976 lang_assignment_statement_type *ass;
977 ass = &(*where)->assignment_statement;
978 if (ass->exp->type.node_class != etree_assert
979 && ass->exp->assign.dst[0] == '.'
980 && ass->exp->assign.dst[1] == 0)
984 case lang_wild_statement_enum:
985 case lang_input_section_enum:
986 case lang_object_symbols_statement_enum:
987 case lang_fill_statement_enum:
988 case lang_data_statement_enum:
989 case lang_reloc_statement_enum:
990 case lang_padding_statement_enum:
991 case lang_constructors_statement_enum:
994 case lang_output_section_statement_enum:
997 case lang_input_statement_enum:
998 case lang_address_statement_enum:
999 case lang_target_statement_enum:
1000 case lang_output_statement_enum:
1001 case lang_group_statement_enum:
1002 case lang_afile_asection_pair_statement_enum:
1011 place->os_tail = &after->next;
1015 /* Put it after the last orphan statement we added. */
1016 *add.tail = *place->stmt;
1017 *place->stmt = add.head;
1020 /* Fix the global list pointer if we happened to tack our
1021 new list at the tail. */
1022 if (*old->tail == add.head)
1023 old->tail = add.tail;
1025 /* Save the end of this list. */
1026 place->stmt = add.tail;
1028 /* Do the same for the list of output section statements. */
1029 newly_added_os = *os_tail;
1031 newly_added_os->next = *place->os_tail;
1032 *place->os_tail = newly_added_os;
1033 place->os_tail = &newly_added_os->next;
1035 /* Fixing the global list pointer here is a little different.
1036 We added to the list in lang_enter_output_section_statement,
1037 trimmed off the new output_section_statment above when
1038 assigning *os_tail = NULL, but possibly added it back in
1039 the same place when assigning *place->os_tail. */
1040 if (*os_tail == NULL)
1041 lang_output_section_statement.tail
1042 = (lang_statement_union_type **) os_tail;
1049 lang_map_flags (flagword flag)
1051 if (flag & SEC_ALLOC)
1054 if (flag & SEC_CODE)
1057 if (flag & SEC_READONLY)
1060 if (flag & SEC_DATA)
1063 if (flag & SEC_LOAD)
1070 lang_memory_region_type *m;
1073 minfo (_("\nMemory Configuration\n\n"));
1074 fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
1075 _("Name"), _("Origin"), _("Length"), _("Attributes"));
1077 for (m = lang_memory_region_list; m != NULL; m = m->next)
1082 fprintf (config.map_file, "%-16s ", m->name);
1084 sprintf_vma (buf, m->origin);
1085 minfo ("0x%s ", buf);
1093 minfo ("0x%V", m->length);
1094 if (m->flags || m->not_flags)
1102 lang_map_flags (m->flags);
1108 lang_map_flags (m->not_flags);
1115 fprintf (config.map_file, _("\nLinker script and memory map\n\n"));
1117 if (! command_line.reduce_memory_overheads)
1119 obstack_begin (&map_obstack, 1000);
1120 for (p = link_info.input_bfds; p != (bfd *) NULL; p = p->link_next)
1121 bfd_map_over_sections (p, init_map_userdata, 0);
1122 bfd_link_hash_traverse (link_info.hash, sort_def_symbol, 0);
1124 print_statements ();
1128 init_map_userdata (abfd, sec, data)
1129 bfd *abfd ATTRIBUTE_UNUSED;
1131 void *data ATTRIBUTE_UNUSED;
1133 fat_section_userdata_type *new_data
1134 = ((fat_section_userdata_type *) (stat_alloc
1135 (sizeof (fat_section_userdata_type))));
1137 ASSERT (get_userdata (sec) == NULL);
1138 get_userdata (sec) = new_data;
1139 new_data->map_symbol_def_tail = &new_data->map_symbol_def_head;
1143 sort_def_symbol (hash_entry, info)
1144 struct bfd_link_hash_entry *hash_entry;
1145 void *info ATTRIBUTE_UNUSED;
1147 if (hash_entry->type == bfd_link_hash_defined
1148 || hash_entry->type == bfd_link_hash_defweak)
1150 struct fat_user_section_struct *ud;
1151 struct map_symbol_def *def;
1153 ud = get_userdata (hash_entry->u.def.section);
1156 /* ??? What do we have to do to initialize this beforehand? */
1157 /* The first time we get here is bfd_abs_section... */
1158 init_map_userdata (0, hash_entry->u.def.section, 0);
1159 ud = get_userdata (hash_entry->u.def.section);
1161 else if (!ud->map_symbol_def_tail)
1162 ud->map_symbol_def_tail = &ud->map_symbol_def_head;
1164 def = obstack_alloc (&map_obstack, sizeof *def);
1165 def->entry = hash_entry;
1166 *(ud->map_symbol_def_tail) = def;
1167 ud->map_symbol_def_tail = &def->next;
1172 /* Initialize an output section. */
1175 init_os (lang_output_section_statement_type *s)
1177 lean_section_userdata_type *new;
1179 if (s->bfd_section != NULL)
1182 if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
1183 einfo (_("%P%F: Illegal use of `%s' section\n"), DISCARD_SECTION_NAME);
1185 new = stat_alloc (SECTION_USERDATA_SIZE);
1186 memset (new, 0, SECTION_USERDATA_SIZE);
1188 s->bfd_section = bfd_get_section_by_name (output_bfd, s->name);
1189 if (s->bfd_section == NULL)
1190 s->bfd_section = bfd_make_section (output_bfd, s->name);
1191 if (s->bfd_section == NULL)
1193 einfo (_("%P%F: output format %s cannot represent section called %s\n"),
1194 output_bfd->xvec->name, s->name);
1196 s->bfd_section->output_section = s->bfd_section;
1198 /* We initialize an output sections output offset to minus its own
1199 vma to allow us to output a section through itself. */
1200 s->bfd_section->output_offset = 0;
1201 get_userdata (s->bfd_section) = new;
1203 /* If there is a base address, make sure that any sections it might
1204 mention are initialized. */
1205 if (s->addr_tree != NULL)
1206 exp_init_os (s->addr_tree);
1208 if (s->load_base != NULL)
1209 exp_init_os (s->load_base);
1212 /* Make sure that all output sections mentioned in an expression are
1216 exp_init_os (etree_type *exp)
1218 switch (exp->type.node_class)
1221 exp_init_os (exp->assign.src);
1225 exp_init_os (exp->binary.lhs);
1226 exp_init_os (exp->binary.rhs);
1230 exp_init_os (exp->trinary.cond);
1231 exp_init_os (exp->trinary.lhs);
1232 exp_init_os (exp->trinary.rhs);
1236 exp_init_os (exp->assert_s.child);
1240 exp_init_os (exp->unary.child);
1244 switch (exp->type.node_code)
1250 lang_output_section_statement_type *os;
1252 os = lang_output_section_find (exp->name.name);
1253 if (os != NULL && os->bfd_section == NULL)
1265 section_already_linked (bfd *abfd, asection *sec, void *data)
1267 lang_input_statement_type *entry = data;
1269 /* If we are only reading symbols from this object, then we want to
1270 discard all sections. */
1271 if (entry->just_syms_flag)
1273 bfd_link_just_syms (abfd, sec, &link_info);
1277 bfd_section_already_linked (abfd, sec);
1280 /* The wild routines.
1282 These expand statements like *(.text) and foo.o to a list of
1283 explicit actions, like foo.o(.text), bar.o(.text) and
1284 foo.o(.text, .data). */
1286 /* Add SECTION to the output section OUTPUT. Do this by creating a
1287 lang_input_section statement which is placed at PTR. FILE is the
1288 input file which holds SECTION. */
1291 lang_add_section (lang_statement_list_type *ptr,
1293 lang_output_section_statement_type *output,
1294 lang_input_statement_type *file)
1296 flagword flags = section->flags;
1297 bfd_boolean discard;
1299 /* Discard sections marked with SEC_EXCLUDE. */
1300 discard = (flags & SEC_EXCLUDE) != 0;
1302 /* Discard input sections which are assigned to a section named
1303 DISCARD_SECTION_NAME. */
1304 if (strcmp (output->name, DISCARD_SECTION_NAME) == 0)
1307 /* Discard debugging sections if we are stripping debugging
1309 if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
1310 && (flags & SEC_DEBUGGING) != 0)
1315 if (section->output_section == NULL)
1317 /* This prevents future calls from assigning this section. */
1318 section->output_section = bfd_abs_section_ptr;
1323 if (section->output_section == NULL)
1326 lang_input_section_type *new;
1329 if (output->bfd_section == NULL)
1332 first = ! output->bfd_section->linker_has_input;
1333 output->bfd_section->linker_has_input = 1;
1335 /* Add a section reference to the list. */
1336 new = new_stat (lang_input_section, ptr);
1338 new->section = section;
1340 section->output_section = output->bfd_section;
1342 flags = section->flags;
1344 /* We don't copy the SEC_NEVER_LOAD flag from an input section
1345 to an output section, because we want to be able to include a
1346 SEC_NEVER_LOAD section in the middle of an otherwise loaded
1347 section (I don't know why we want to do this, but we do).
1348 build_link_order in ldwrite.c handles this case by turning
1349 the embedded SEC_NEVER_LOAD section into a fill. */
1351 flags &= ~ SEC_NEVER_LOAD;
1353 /* If final link, don't copy the SEC_LINK_ONCE flags, they've
1354 already been processed. One reason to do this is that on pe
1355 format targets, .text$foo sections go into .text and it's odd
1356 to see .text with SEC_LINK_ONCE set. */
1358 if (! link_info.relocatable)
1359 flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
1361 /* If this is not the first input section, and the SEC_READONLY
1362 flag is not currently set, then don't set it just because the
1363 input section has it set. */
1365 if (! first && (output->bfd_section->flags & SEC_READONLY) == 0)
1366 flags &= ~ SEC_READONLY;
1368 /* Keep SEC_MERGE and SEC_STRINGS only if they are the same. */
1370 && ((output->bfd_section->flags & (SEC_MERGE | SEC_STRINGS))
1371 != (flags & (SEC_MERGE | SEC_STRINGS))
1372 || ((flags & SEC_MERGE)
1373 && output->bfd_section->entsize != section->entsize)))
1375 output->bfd_section->flags &= ~ (SEC_MERGE | SEC_STRINGS);
1376 flags &= ~ (SEC_MERGE | SEC_STRINGS);
1379 output->bfd_section->flags |= flags;
1381 if (flags & SEC_MERGE)
1382 output->bfd_section->entsize = section->entsize;
1384 /* If SEC_READONLY is not set in the input section, then clear
1385 it from the output section. */
1386 if ((section->flags & SEC_READONLY) == 0)
1387 output->bfd_section->flags &= ~SEC_READONLY;
1389 switch (output->sectype)
1391 case normal_section:
1396 case overlay_section:
1397 output->bfd_section->flags &= ~SEC_ALLOC;
1399 case noload_section:
1400 output->bfd_section->flags &= ~SEC_LOAD;
1401 output->bfd_section->flags |= SEC_NEVER_LOAD;
1405 /* Copy over SEC_SMALL_DATA. */
1406 if (section->flags & SEC_SMALL_DATA)
1407 output->bfd_section->flags |= SEC_SMALL_DATA;
1409 if (section->alignment_power > output->bfd_section->alignment_power)
1410 output->bfd_section->alignment_power = section->alignment_power;
1412 /* If supplied an alignment, then force it. */
1413 if (output->section_alignment != -1)
1414 output->bfd_section->alignment_power = output->section_alignment;
1416 if (bfd_get_arch (section->owner) == bfd_arch_tic54x
1417 && (section->flags & SEC_TIC54X_BLOCK) != 0)
1419 output->bfd_section->flags |= SEC_TIC54X_BLOCK;
1420 /* FIXME: This value should really be obtained from the bfd... */
1421 output->block_value = 128;
1426 /* Compare sections ASEC and BSEC according to SORT. */
1429 compare_section (sort_type sort, asection *asec, asection *bsec)
1438 case by_alignment_name:
1439 ret = (bfd_section_alignment (bsec->owner, bsec)
1440 - bfd_section_alignment (asec->owner, asec));
1446 ret = strcmp (bfd_get_section_name (asec->owner, asec),
1447 bfd_get_section_name (bsec->owner, bsec));
1450 case by_name_alignment:
1451 ret = strcmp (bfd_get_section_name (asec->owner, asec),
1452 bfd_get_section_name (bsec->owner, bsec));
1458 ret = (bfd_section_alignment (bsec->owner, bsec)
1459 - bfd_section_alignment (asec->owner, asec));
1466 /* Handle wildcard sorting. This returns the lang_input_section which
1467 should follow the one we are going to create for SECTION and FILE,
1468 based on the sorting requirements of WILD. It returns NULL if the
1469 new section should just go at the end of the current list. */
1471 static lang_statement_union_type *
1472 wild_sort (lang_wild_statement_type *wild,
1473 struct wildcard_list *sec,
1474 lang_input_statement_type *file,
1477 const char *section_name;
1478 lang_statement_union_type *l;
1480 if (!wild->filenames_sorted
1481 && (sec == NULL || sec->spec.sorted == none))
1484 section_name = bfd_get_section_name (file->the_bfd, section);
1485 for (l = wild->children.head; l != NULL; l = l->header.next)
1487 lang_input_section_type *ls;
1489 if (l->header.type != lang_input_section_enum)
1491 ls = &l->input_section;
1493 /* Sorting by filename takes precedence over sorting by section
1496 if (wild->filenames_sorted)
1498 const char *fn, *ln;
1502 /* The PE support for the .idata section as generated by
1503 dlltool assumes that files will be sorted by the name of
1504 the archive and then the name of the file within the
1507 if (file->the_bfd != NULL
1508 && bfd_my_archive (file->the_bfd) != NULL)
1510 fn = bfd_get_filename (bfd_my_archive (file->the_bfd));
1515 fn = file->filename;
1519 if (ls->ifile->the_bfd != NULL
1520 && bfd_my_archive (ls->ifile->the_bfd) != NULL)
1522 ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd));
1527 ln = ls->ifile->filename;
1531 i = strcmp (fn, ln);
1540 fn = file->filename;
1542 ln = ls->ifile->filename;
1544 i = strcmp (fn, ln);
1552 /* Here either the files are not sorted by name, or we are
1553 looking at the sections for this file. */
1555 if (sec != NULL && sec->spec.sorted != none)
1557 if (compare_section (sec->spec.sorted, section,
1566 /* Expand a wild statement for a particular FILE. SECTION may be
1567 NULL, in which case it is a wild card. */
1570 output_section_callback (lang_wild_statement_type *ptr,
1571 struct wildcard_list *sec,
1573 lang_input_statement_type *file,
1576 lang_statement_union_type *before;
1578 /* Exclude sections that match UNIQUE_SECTION_LIST. */
1579 if (unique_section_p (section))
1582 before = wild_sort (ptr, sec, file, section);
1584 /* Here BEFORE points to the lang_input_section which
1585 should follow the one we are about to add. If BEFORE
1586 is NULL, then the section should just go at the end
1587 of the current list. */
1590 lang_add_section (&ptr->children, section,
1591 (lang_output_section_statement_type *) output,
1595 lang_statement_list_type list;
1596 lang_statement_union_type **pp;
1598 lang_list_init (&list);
1599 lang_add_section (&list, section,
1600 (lang_output_section_statement_type *) output,
1603 /* If we are discarding the section, LIST.HEAD will
1605 if (list.head != NULL)
1607 ASSERT (list.head->header.next == NULL);
1609 for (pp = &ptr->children.head;
1611 pp = &(*pp)->header.next)
1612 ASSERT (*pp != NULL);
1614 list.head->header.next = *pp;
1620 /* Check if all sections in a wild statement for a particular FILE
1624 check_section_callback (lang_wild_statement_type *ptr ATTRIBUTE_UNUSED,
1625 struct wildcard_list *sec ATTRIBUTE_UNUSED,
1627 lang_input_statement_type *file ATTRIBUTE_UNUSED,
1630 /* Exclude sections that match UNIQUE_SECTION_LIST. */
1631 if (unique_section_p (section))
1634 if (section->output_section == NULL && (section->flags & SEC_READONLY) == 0)
1635 ((lang_output_section_statement_type *) data)->all_input_readonly = FALSE;
1638 /* This is passed a file name which must have been seen already and
1639 added to the statement tree. We will see if it has been opened
1640 already and had its symbols read. If not then we'll read it. */
1642 static lang_input_statement_type *
1643 lookup_name (const char *name)
1645 lang_input_statement_type *search;
1647 for (search = (lang_input_statement_type *) input_file_chain.head;
1649 search = (lang_input_statement_type *) search->next_real_file)
1651 /* Use the local_sym_name as the name of the file that has
1652 already been loaded as filename might have been transformed
1653 via the search directory lookup mechanism. */
1654 const char * filename = search->local_sym_name;
1656 if (filename == NULL && name == NULL)
1658 if (filename != NULL
1660 && strcmp (filename, name) == 0)
1665 search = new_afile (name, lang_input_file_is_search_file_enum,
1666 default_target, FALSE);
1668 /* If we have already added this file, or this file is not real
1669 (FIXME: can that ever actually happen?) or the name is NULL
1670 (FIXME: can that ever actually happen?) don't add this file. */
1673 || search->filename == NULL)
1676 if (! load_symbols (search, NULL))
1682 /* Save LIST as a list of libraries whose symbols should not be exported. */
1687 struct excluded_lib *next;
1689 static struct excluded_lib *excluded_libs;
1692 add_excluded_libs (const char *list)
1694 const char *p = list, *end;
1698 struct excluded_lib *entry;
1699 end = strpbrk (p, ",:");
1701 end = p + strlen (p);
1702 entry = xmalloc (sizeof (*entry));
1703 entry->next = excluded_libs;
1704 entry->name = xmalloc (end - p + 1);
1705 memcpy (entry->name, p, end - p);
1706 entry->name[end - p] = '\0';
1707 excluded_libs = entry;
1715 check_excluded_libs (bfd *abfd)
1717 struct excluded_lib *lib = excluded_libs;
1721 int len = strlen (lib->name);
1722 const char *filename = lbasename (abfd->filename);
1724 if (strcmp (lib->name, "ALL") == 0)
1726 abfd->no_export = TRUE;
1730 if (strncmp (lib->name, filename, len) == 0
1731 && (filename[len] == '\0'
1732 || (filename[len] == '.' && filename[len + 1] == 'a'
1733 && filename[len + 2] == '\0')))
1735 abfd->no_export = TRUE;
1743 /* Get the symbols for an input file. */
1746 load_symbols (lang_input_statement_type *entry,
1747 lang_statement_list_type *place)
1754 ldfile_open_file (entry);
1756 if (! bfd_check_format (entry->the_bfd, bfd_archive)
1757 && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching))
1760 lang_statement_list_type *hold;
1761 bfd_boolean bad_load = TRUE;
1762 bfd_boolean save_ldlang_sysrooted_script;
1764 err = bfd_get_error ();
1766 /* See if the emulation has some special knowledge. */
1767 if (ldemul_unrecognized_file (entry))
1770 if (err == bfd_error_file_ambiguously_recognized)
1774 einfo (_("%B: file not recognized: %E\n"), entry->the_bfd);
1775 einfo (_("%B: matching formats:"), entry->the_bfd);
1776 for (p = matching; *p != NULL; p++)
1780 else if (err != bfd_error_file_not_recognized
1782 einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd);
1786 bfd_close (entry->the_bfd);
1787 entry->the_bfd = NULL;
1789 /* Try to interpret the file as a linker script. */
1790 ldfile_open_command_file (entry->filename);
1794 save_ldlang_sysrooted_script = ldlang_sysrooted_script;
1795 ldlang_sysrooted_script = entry->sysrooted;
1797 ldfile_assumed_script = TRUE;
1798 parser_input = input_script;
1799 /* We want to use the same -Bdynamic/-Bstatic as the one for
1801 config.dynamic_link = entry->dynamic;
1803 ldfile_assumed_script = FALSE;
1805 ldlang_sysrooted_script = save_ldlang_sysrooted_script;
1811 if (ldemul_recognized_file (entry))
1814 /* We don't call ldlang_add_file for an archive. Instead, the
1815 add_symbols entry point will call ldlang_add_file, via the
1816 add_archive_element callback, for each element of the archive
1818 switch (bfd_get_format (entry->the_bfd))
1824 ldlang_add_file (entry);
1825 if (trace_files || trace_file_tries)
1826 info_msg ("%I\n", entry);
1830 check_excluded_libs (entry->the_bfd);
1832 if (entry->whole_archive)
1835 bfd_boolean loaded = TRUE;
1839 member = bfd_openr_next_archived_file (entry->the_bfd, member);
1844 if (! bfd_check_format (member, bfd_object))
1846 einfo (_("%F%B: member %B in archive is not an object\n"),
1847 entry->the_bfd, member);
1851 if (! ((*link_info.callbacks->add_archive_element)
1852 (&link_info, member, "--whole-archive")))
1855 if (! bfd_link_add_symbols (member, &link_info))
1857 einfo (_("%F%B: could not read symbols: %E\n"), member);
1862 entry->loaded = loaded;
1868 if (bfd_link_add_symbols (entry->the_bfd, &link_info))
1869 entry->loaded = TRUE;
1871 einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd);
1873 return entry->loaded;
1876 /* Handle a wild statement. S->FILENAME or S->SECTION_LIST or both
1877 may be NULL, indicating that it is a wildcard. Separate
1878 lang_input_section statements are created for each part of the
1879 expansion; they are added after the wild statement S. OUTPUT is
1880 the output section. */
1883 wild (lang_wild_statement_type *s,
1884 const char *target ATTRIBUTE_UNUSED,
1885 lang_output_section_statement_type *output)
1887 struct wildcard_list *sec;
1889 walk_wild (s, output_section_callback, output);
1891 for (sec = s->section_list; sec != NULL; sec = sec->next)
1893 if (default_common_section != NULL)
1895 if (sec->spec.name != NULL && strcmp (sec->spec.name, "COMMON") == 0)
1897 /* Remember the section that common is going to in case we
1898 later get something which doesn't know where to put it. */
1899 default_common_section = output;
1904 /* Return TRUE iff target is the sought target. */
1907 get_target (const bfd_target *target, void *data)
1909 const char *sought = data;
1911 return strcmp (target->name, sought) == 0;
1914 /* Like strcpy() but convert to lower case as well. */
1917 stricpy (char *dest, char *src)
1921 while ((c = *src++) != 0)
1922 *dest++ = TOLOWER (c);
1927 /* Remove the first occurrence of needle (if any) in haystack
1931 strcut (char *haystack, char *needle)
1933 haystack = strstr (haystack, needle);
1939 for (src = haystack + strlen (needle); *src;)
1940 *haystack++ = *src++;
1946 /* Compare two target format name strings.
1947 Return a value indicating how "similar" they are. */
1950 name_compare (char *first, char *second)
1956 copy1 = xmalloc (strlen (first) + 1);
1957 copy2 = xmalloc (strlen (second) + 1);
1959 /* Convert the names to lower case. */
1960 stricpy (copy1, first);
1961 stricpy (copy2, second);
1963 /* Remove size and endian strings from the name. */
1964 strcut (copy1, "big");
1965 strcut (copy1, "little");
1966 strcut (copy2, "big");
1967 strcut (copy2, "little");
1969 /* Return a value based on how many characters match,
1970 starting from the beginning. If both strings are
1971 the same then return 10 * their length. */
1972 for (result = 0; copy1[result] == copy2[result]; result++)
1973 if (copy1[result] == 0)
1985 /* Set by closest_target_match() below. */
1986 static const bfd_target *winner;
1988 /* Scan all the valid bfd targets looking for one that has the endianness
1989 requirement that was specified on the command line, and is the nearest
1990 match to the original output target. */
1993 closest_target_match (const bfd_target *target, void *data)
1995 const bfd_target *original = data;
1997 if (command_line.endian == ENDIAN_BIG
1998 && target->byteorder != BFD_ENDIAN_BIG)
2001 if (command_line.endian == ENDIAN_LITTLE
2002 && target->byteorder != BFD_ENDIAN_LITTLE)
2005 /* Must be the same flavour. */
2006 if (target->flavour != original->flavour)
2009 /* If we have not found a potential winner yet, then record this one. */
2016 /* Oh dear, we now have two potential candidates for a successful match.
2017 Compare their names and choose the better one. */
2018 if (name_compare (target->name, original->name)
2019 > name_compare (winner->name, original->name))
2022 /* Keep on searching until wqe have checked them all. */
2026 /* Return the BFD target format of the first input file. */
2029 get_first_input_target (void)
2031 char *target = NULL;
2033 LANG_FOR_EACH_INPUT_STATEMENT (s)
2035 if (s->header.type == lang_input_statement_enum
2038 ldfile_open_file (s);
2040 if (s->the_bfd != NULL
2041 && bfd_check_format (s->the_bfd, bfd_object))
2043 target = bfd_get_target (s->the_bfd);
2055 lang_get_output_target (void)
2059 /* Has the user told us which output format to use? */
2060 if (output_target != NULL)
2061 return output_target;
2063 /* No - has the current target been set to something other than
2065 if (current_target != default_target)
2066 return current_target;
2068 /* No - can we determine the format of the first input file? */
2069 target = get_first_input_target ();
2073 /* Failed - use the default output target. */
2074 return default_target;
2077 /* Open the output file. */
2080 open_output (const char *name)
2084 output_target = lang_get_output_target ();
2086 /* Has the user requested a particular endianness on the command
2088 if (command_line.endian != ENDIAN_UNSET)
2090 const bfd_target *target;
2091 enum bfd_endian desired_endian;
2093 /* Get the chosen target. */
2094 target = bfd_search_for_target (get_target, (void *) output_target);
2096 /* If the target is not supported, we cannot do anything. */
2099 if (command_line.endian == ENDIAN_BIG)
2100 desired_endian = BFD_ENDIAN_BIG;
2102 desired_endian = BFD_ENDIAN_LITTLE;
2104 /* See if the target has the wrong endianness. This should
2105 not happen if the linker script has provided big and
2106 little endian alternatives, but some scrips don't do
2108 if (target->byteorder != desired_endian)
2110 /* If it does, then see if the target provides
2111 an alternative with the correct endianness. */
2112 if (target->alternative_target != NULL
2113 && (target->alternative_target->byteorder == desired_endian))
2114 output_target = target->alternative_target->name;
2117 /* Try to find a target as similar as possible to
2118 the default target, but which has the desired
2119 endian characteristic. */
2120 bfd_search_for_target (closest_target_match,
2123 /* Oh dear - we could not find any targets that
2124 satisfy our requirements. */
2126 einfo (_("%P: warning: could not find any targets"
2127 " that match endianness requirement\n"));
2129 output_target = winner->name;
2135 output = bfd_openw (name, output_target);
2139 if (bfd_get_error () == bfd_error_invalid_target)
2140 einfo (_("%P%F: target %s not found\n"), output_target);
2142 einfo (_("%P%F: cannot open output file %s: %E\n"), name);
2145 delete_output_file_on_failure = TRUE;
2147 if (! bfd_set_format (output, bfd_object))
2148 einfo (_("%P%F:%s: can not make object file: %E\n"), name);
2149 if (! bfd_set_arch_mach (output,
2150 ldfile_output_architecture,
2151 ldfile_output_machine))
2152 einfo (_("%P%F:%s: can not set architecture: %E\n"), name);
2154 link_info.hash = bfd_link_hash_table_create (output);
2155 if (link_info.hash == NULL)
2156 einfo (_("%P%F: can not create link hash table: %E\n"));
2158 bfd_set_gp_size (output, g_switch_value);
2163 ldlang_open_output (lang_statement_union_type *statement)
2165 switch (statement->header.type)
2167 case lang_output_statement_enum:
2168 ASSERT (output_bfd == NULL);
2169 output_bfd = open_output (statement->output_statement.name);
2170 ldemul_set_output_arch ();
2171 if (config.magic_demand_paged && !link_info.relocatable)
2172 output_bfd->flags |= D_PAGED;
2174 output_bfd->flags &= ~D_PAGED;
2175 if (config.text_read_only)
2176 output_bfd->flags |= WP_TEXT;
2178 output_bfd->flags &= ~WP_TEXT;
2179 if (link_info.traditional_format)
2180 output_bfd->flags |= BFD_TRADITIONAL_FORMAT;
2182 output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT;
2185 case lang_target_statement_enum:
2186 current_target = statement->target_statement.target;
2193 /* Convert between addresses in bytes and sizes in octets.
2194 For currently supported targets, octets_per_byte is always a power
2195 of two, so we can use shifts. */
2196 #define TO_ADDR(X) ((X) >> opb_shift)
2197 #define TO_SIZE(X) ((X) << opb_shift)
2199 /* Support the above. */
2200 static unsigned int opb_shift = 0;
2205 unsigned x = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2206 ldfile_output_machine);
2209 while ((x & 1) == 0)
2217 /* Open all the input files. */
2220 open_input_bfds (lang_statement_union_type *s, bfd_boolean force)
2222 for (; s != NULL; s = s->header.next)
2224 switch (s->header.type)
2226 case lang_constructors_statement_enum:
2227 open_input_bfds (constructor_list.head, force);
2229 case lang_output_section_statement_enum:
2230 open_input_bfds (s->output_section_statement.children.head, force);
2232 case lang_wild_statement_enum:
2233 /* Maybe we should load the file's symbols. */
2234 if (s->wild_statement.filename
2235 && ! wildcardp (s->wild_statement.filename))
2236 lookup_name (s->wild_statement.filename);
2237 open_input_bfds (s->wild_statement.children.head, force);
2239 case lang_group_statement_enum:
2241 struct bfd_link_hash_entry *undefs;
2243 /* We must continually search the entries in the group
2244 until no new symbols are added to the list of undefined
2249 undefs = link_info.hash->undefs_tail;
2250 open_input_bfds (s->group_statement.children.head, TRUE);
2252 while (undefs != link_info.hash->undefs_tail);
2255 case lang_target_statement_enum:
2256 current_target = s->target_statement.target;
2258 case lang_input_statement_enum:
2259 if (s->input_statement.real)
2261 lang_statement_list_type add;
2263 s->input_statement.target = current_target;
2265 /* If we are being called from within a group, and this
2266 is an archive which has already been searched, then
2267 force it to be researched unless the whole archive
2268 has been loaded already. */
2270 && !s->input_statement.whole_archive
2271 && s->input_statement.loaded
2272 && bfd_check_format (s->input_statement.the_bfd,
2274 s->input_statement.loaded = FALSE;
2276 lang_list_init (&add);
2278 if (! load_symbols (&s->input_statement, &add))
2279 config.make_executable = FALSE;
2281 if (add.head != NULL)
2283 *add.tail = s->header.next;
2284 s->header.next = add.head;
2294 /* Add a symbol to a hash of symbols used in DEFINED (NAME) expressions. */
2297 lang_track_definedness (const char *name)
2299 if (bfd_hash_lookup (&lang_definedness_table, name, TRUE, FALSE) == NULL)
2300 einfo (_("%P%F: bfd_hash_lookup failed creating symbol %s\n"), name);
2303 /* New-function for the definedness hash table. */
2305 static struct bfd_hash_entry *
2306 lang_definedness_newfunc (struct bfd_hash_entry *entry,
2307 struct bfd_hash_table *table ATTRIBUTE_UNUSED,
2308 const char *name ATTRIBUTE_UNUSED)
2310 struct lang_definedness_hash_entry *ret
2311 = (struct lang_definedness_hash_entry *) entry;
2314 ret = (struct lang_definedness_hash_entry *)
2315 bfd_hash_allocate (table, sizeof (struct lang_definedness_hash_entry));
2318 einfo (_("%P%F: bfd_hash_allocate failed creating symbol %s\n"), name);
2320 ret->iteration = -1;
2324 /* Return the iteration when the definition of NAME was last updated. A
2325 value of -1 means that the symbol is not defined in the linker script
2326 or the command line, but may be defined in the linker symbol table. */
2329 lang_symbol_definition_iteration (const char *name)
2331 struct lang_definedness_hash_entry *defentry
2332 = (struct lang_definedness_hash_entry *)
2333 bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE);
2335 /* We've already created this one on the presence of DEFINED in the
2336 script, so it can't be NULL unless something is borked elsewhere in
2338 if (defentry == NULL)
2341 return defentry->iteration;
2344 /* Update the definedness state of NAME. */
2347 lang_update_definedness (const char *name, struct bfd_link_hash_entry *h)
2349 struct lang_definedness_hash_entry *defentry
2350 = (struct lang_definedness_hash_entry *)
2351 bfd_hash_lookup (&lang_definedness_table, name, FALSE, FALSE);
2353 /* We don't keep track of symbols not tested with DEFINED. */
2354 if (defentry == NULL)
2357 /* If the symbol was already defined, and not from an earlier statement
2358 iteration, don't update the definedness iteration, because that'd
2359 make the symbol seem defined in the linker script at this point, and
2360 it wasn't; it was defined in some object. If we do anyway, DEFINED
2361 would start to yield false before this point and the construct "sym =
2362 DEFINED (sym) ? sym : X;" would change sym to X despite being defined
2364 if (h->type != bfd_link_hash_undefined
2365 && h->type != bfd_link_hash_common
2366 && h->type != bfd_link_hash_new
2367 && defentry->iteration == -1)
2370 defentry->iteration = lang_statement_iteration;
2373 /* Add the supplied name to the symbol table as an undefined reference.
2374 This is a two step process as the symbol table doesn't even exist at
2375 the time the ld command line is processed. First we put the name
2376 on a list, then, once the output file has been opened, transfer the
2377 name to the symbol table. */
2379 typedef struct bfd_sym_chain ldlang_undef_chain_list_type;
2381 #define ldlang_undef_chain_list_head entry_symbol.next
2384 ldlang_add_undef (const char *const name)
2386 ldlang_undef_chain_list_type *new =
2387 stat_alloc (sizeof (ldlang_undef_chain_list_type));
2389 new->next = ldlang_undef_chain_list_head;
2390 ldlang_undef_chain_list_head = new;
2392 new->name = xstrdup (name);
2394 if (output_bfd != NULL)
2395 insert_undefined (new->name);
2398 /* Insert NAME as undefined in the symbol table. */
2401 insert_undefined (const char *name)
2403 struct bfd_link_hash_entry *h;
2405 h = bfd_link_hash_lookup (link_info.hash, name, TRUE, FALSE, TRUE);
2407 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
2408 if (h->type == bfd_link_hash_new)
2410 h->type = bfd_link_hash_undefined;
2411 h->u.undef.abfd = NULL;
2412 bfd_link_add_undef (link_info.hash, h);
2416 /* Run through the list of undefineds created above and place them
2417 into the linker hash table as undefined symbols belonging to the
2421 lang_place_undefineds (void)
2423 ldlang_undef_chain_list_type *ptr;
2425 for (ptr = ldlang_undef_chain_list_head; ptr != NULL; ptr = ptr->next)
2426 insert_undefined (ptr->name);
2429 /* Check for all readonly or some readwrite sections. */
2432 check_input_sections
2433 (lang_statement_union_type *s,
2434 lang_output_section_statement_type *output_section_statement)
2436 for (; s != (lang_statement_union_type *) NULL; s = s->header.next)
2438 switch (s->header.type)
2440 case lang_wild_statement_enum:
2441 walk_wild (&s->wild_statement, check_section_callback,
2442 output_section_statement);
2443 if (! output_section_statement->all_input_readonly)
2446 case lang_constructors_statement_enum:
2447 check_input_sections (constructor_list.head,
2448 output_section_statement);
2449 if (! output_section_statement->all_input_readonly)
2452 case lang_group_statement_enum:
2453 check_input_sections (s->group_statement.children.head,
2454 output_section_statement);
2455 if (! output_section_statement->all_input_readonly)
2464 /* Update wildcard statements if needed. */
2467 update_wild_statements (lang_statement_union_type *s)
2469 struct wildcard_list *sec;
2471 switch (sort_section)
2481 for (; s != NULL; s = s->header.next)
2483 switch (s->header.type)
2488 case lang_wild_statement_enum:
2489 sec = s->wild_statement.section_list;
2492 switch (sec->spec.sorted)
2495 sec->spec.sorted = sort_section;
2498 if (sort_section == by_alignment)
2499 sec->spec.sorted = by_name_alignment;
2502 if (sort_section == by_name)
2503 sec->spec.sorted = by_alignment_name;
2511 case lang_constructors_statement_enum:
2512 update_wild_statements (constructor_list.head);
2515 case lang_output_section_statement_enum:
2516 update_wild_statements
2517 (s->output_section_statement.children.head);
2520 case lang_group_statement_enum:
2521 update_wild_statements (s->group_statement.children.head);
2529 /* Open input files and attach to output sections. */
2532 map_input_to_output_sections
2533 (lang_statement_union_type *s, const char *target,
2534 lang_output_section_statement_type *os)
2536 for (; s != NULL; s = s->header.next)
2538 switch (s->header.type)
2540 case lang_wild_statement_enum:
2541 wild (&s->wild_statement, target, os);
2543 case lang_constructors_statement_enum:
2544 map_input_to_output_sections (constructor_list.head,
2548 case lang_output_section_statement_enum:
2549 if (s->output_section_statement.constraint)
2551 if (s->output_section_statement.constraint == -1)
2553 s->output_section_statement.all_input_readonly = TRUE;
2554 check_input_sections (s->output_section_statement.children.head,
2555 &s->output_section_statement);
2556 if ((s->output_section_statement.all_input_readonly
2557 && s->output_section_statement.constraint == ONLY_IF_RW)
2558 || (!s->output_section_statement.all_input_readonly
2559 && s->output_section_statement.constraint == ONLY_IF_RO))
2561 s->output_section_statement.constraint = -1;
2566 map_input_to_output_sections (s->output_section_statement.children.head,
2568 &s->output_section_statement);
2570 case lang_output_statement_enum:
2572 case lang_target_statement_enum:
2573 target = s->target_statement.target;
2575 case lang_group_statement_enum:
2576 map_input_to_output_sections (s->group_statement.children.head,
2580 case lang_data_statement_enum:
2581 /* Make sure that any sections mentioned in the expression
2583 exp_init_os (s->data_statement.exp);
2584 if (os != NULL && os->bfd_section == NULL)
2586 /* The output section gets contents, and then we inspect for
2587 any flags set in the input script which override any ALLOC. */
2588 os->bfd_section->flags |= SEC_HAS_CONTENTS;
2589 if (!(os->flags & SEC_NEVER_LOAD))
2590 os->bfd_section->flags |= SEC_ALLOC | SEC_LOAD;
2592 case lang_fill_statement_enum:
2593 case lang_input_section_enum:
2594 case lang_object_symbols_statement_enum:
2595 case lang_reloc_statement_enum:
2596 case lang_padding_statement_enum:
2597 case lang_input_statement_enum:
2598 if (os != NULL && os->bfd_section == NULL)
2601 case lang_assignment_statement_enum:
2602 if (os != NULL && os->bfd_section == NULL)
2605 /* Make sure that any sections mentioned in the assignment
2607 exp_init_os (s->assignment_statement.exp);
2609 case lang_afile_asection_pair_statement_enum:
2612 case lang_address_statement_enum:
2613 /* Mark the specified section with the supplied address.
2615 If this section was actually a segment marker, then the
2616 directive is ignored if the linker script explicitly
2617 processed the segment marker. Originally, the linker
2618 treated segment directives (like -Ttext on the
2619 command-line) as section directives. We honor the
2620 section directive semantics for backwards compatibilty;
2621 linker scripts that do not specifically check for
2622 SEGMENT_START automatically get the old semantics. */
2623 if (!s->address_statement.segment
2624 || !s->address_statement.segment->used)
2626 lang_output_section_statement_type *aos
2627 = (lang_output_section_statement_lookup
2628 (s->address_statement.section_name));
2630 if (aos->bfd_section == NULL)
2632 aos->addr_tree = s->address_statement.address;
2639 /* An output section might have been removed after its statement was
2640 added. For example, ldemul_before_allocation can remove dynamic
2641 sections if they turn out to be not needed. Clean them up here. */
2644 strip_excluded_output_sections (void)
2646 lang_output_section_statement_type *os;
2648 for (os = &lang_output_section_statement.head->output_section_statement;
2654 if (os->constraint == -1)
2656 s = os->bfd_section;
2657 if (s != NULL && (s->flags & SEC_EXCLUDE) != 0)
2661 os->bfd_section = NULL;
2663 for (p = &output_bfd->sections; *p; p = &(*p)->next)
2666 bfd_section_list_remove (output_bfd, p);
2667 output_bfd->section_count--;
2675 print_output_section_statement
2676 (lang_output_section_statement_type *output_section_statement)
2678 asection *section = output_section_statement->bfd_section;
2681 if (output_section_statement != abs_output_section)
2683 minfo ("\n%s", output_section_statement->name);
2685 if (section != NULL)
2687 print_dot = section->vma;
2689 len = strlen (output_section_statement->name);
2690 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2695 while (len < SECTION_NAME_MAP_LENGTH)
2701 minfo ("0x%V %W", section->vma, section->size);
2703 if (output_section_statement->load_base != NULL)
2707 addr = exp_get_abs_int (output_section_statement->load_base, 0,
2708 "load base", lang_final_phase_enum);
2709 minfo (_(" load address 0x%V"), addr);
2716 print_statement_list (output_section_statement->children.head,
2717 output_section_statement);
2721 print_assignment (lang_assignment_statement_type *assignment,
2722 lang_output_section_statement_type *output_section)
2727 etree_value_type result;
2729 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2732 if (assignment->exp->type.node_class == etree_assert)
2735 tree = assignment->exp->assert_s.child;
2739 const char *dst = assignment->exp->assign.dst;
2740 is_dot = dst[0] == '.' && dst[1] == 0;
2741 tree = assignment->exp->assign.src;
2744 result = exp_fold_tree (tree, output_section, lang_final_phase_enum,
2745 print_dot, &print_dot);
2750 value = result.value + result.section->bfd_section->vma;
2752 minfo ("0x%V", value);
2765 exp_print_tree (assignment->exp);
2770 print_input_statement (lang_input_statement_type *statm)
2772 if (statm->filename != NULL)
2774 fprintf (config.map_file, "LOAD %s\n", statm->filename);
2778 /* Print all symbols defined in a particular section. This is called
2779 via bfd_link_hash_traverse, or by print_all_symbols. */
2782 print_one_symbol (struct bfd_link_hash_entry *hash_entry, void *ptr)
2784 asection *sec = ptr;
2786 if ((hash_entry->type == bfd_link_hash_defined
2787 || hash_entry->type == bfd_link_hash_defweak)
2788 && sec == hash_entry->u.def.section)
2792 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2795 (hash_entry->u.def.value
2796 + hash_entry->u.def.section->output_offset
2797 + hash_entry->u.def.section->output_section->vma));
2799 minfo (" %T\n", hash_entry->root.string);
2806 print_all_symbols (sec)
2809 struct fat_user_section_struct *ud = get_userdata (sec);
2810 struct map_symbol_def *def;
2815 *ud->map_symbol_def_tail = 0;
2816 for (def = ud->map_symbol_def_head; def; def = def->next)
2817 print_one_symbol (def->entry, sec);
2820 /* Print information about an input section to the map file. */
2823 print_input_section (lang_input_section_type *in)
2825 asection *i = in->section;
2826 bfd_size_type size = i->size;
2835 minfo ("%s", i->name);
2837 len = 1 + strlen (i->name);
2838 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2843 while (len < SECTION_NAME_MAP_LENGTH)
2849 if (i->output_section != NULL && (i->flags & SEC_EXCLUDE) == 0)
2850 addr = i->output_section->vma + i->output_offset;
2857 minfo ("0x%V %W %B\n", addr, TO_ADDR (size), i->owner);
2859 if (size != i->rawsize && i->rawsize != 0)
2861 len = SECTION_NAME_MAP_LENGTH + 3;
2873 minfo (_("%W (size before relaxing)\n"), i->rawsize);
2876 if (i->output_section != NULL && (i->flags & SEC_EXCLUDE) == 0)
2878 if (command_line.reduce_memory_overheads)
2879 bfd_link_hash_traverse (link_info.hash, print_one_symbol, i);
2881 print_all_symbols (i);
2883 print_dot = addr + TO_ADDR (size);
2889 print_fill_statement (lang_fill_statement_type *fill)
2893 fputs (" FILL mask 0x", config.map_file);
2894 for (p = fill->fill->data, size = fill->fill->size; size != 0; p++, size--)
2895 fprintf (config.map_file, "%02x", *p);
2896 fputs ("\n", config.map_file);
2900 print_data_statement (lang_data_statement_type *data)
2908 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2911 addr = data->output_vma;
2912 if (data->output_section != NULL)
2913 addr += data->output_section->vma;
2941 minfo ("0x%V %W %s 0x%v", addr, size, name, data->value);
2943 if (data->exp->type.node_class != etree_value)
2946 exp_print_tree (data->exp);
2951 print_dot = addr + TO_ADDR (size);
2954 /* Print an address statement. These are generated by options like
2958 print_address_statement (lang_address_statement_type *address)
2960 minfo (_("Address of section %s set to "), address->section_name);
2961 exp_print_tree (address->address);
2965 /* Print a reloc statement. */
2968 print_reloc_statement (lang_reloc_statement_type *reloc)
2975 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2978 addr = reloc->output_vma;
2979 if (reloc->output_section != NULL)
2980 addr += reloc->output_section->vma;
2982 size = bfd_get_reloc_size (reloc->howto);
2984 minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name);
2986 if (reloc->name != NULL)
2987 minfo ("%s+", reloc->name);
2989 minfo ("%s+", reloc->section->name);
2991 exp_print_tree (reloc->addend_exp);
2995 print_dot = addr + TO_ADDR (size);
2999 print_padding_statement (lang_padding_statement_type *s)
3007 len = sizeof " *fill*" - 1;
3008 while (len < SECTION_NAME_MAP_LENGTH)
3014 addr = s->output_offset;
3015 if (s->output_section != NULL)
3016 addr += s->output_section->vma;
3017 minfo ("0x%V %W ", addr, (bfd_vma) s->size);
3019 if (s->fill->size != 0)
3023 for (p = s->fill->data, size = s->fill->size; size != 0; p++, size--)
3024 fprintf (config.map_file, "%02x", *p);
3029 print_dot = addr + TO_ADDR (s->size);
3033 print_wild_statement (lang_wild_statement_type *w,
3034 lang_output_section_statement_type *os)
3036 struct wildcard_list *sec;
3040 if (w->filenames_sorted)
3042 if (w->filename != NULL)
3043 minfo ("%s", w->filename);
3046 if (w->filenames_sorted)
3050 for (sec = w->section_list; sec; sec = sec->next)
3052 if (sec->spec.sorted)
3054 if (sec->spec.exclude_name_list != NULL)
3057 minfo ("EXCLUDE_FILE(%s", sec->spec.exclude_name_list->name);
3058 for (tmp = sec->spec.exclude_name_list->next; tmp; tmp = tmp->next)
3059 minfo (" %s", tmp->name);
3062 if (sec->spec.name != NULL)
3063 minfo ("%s", sec->spec.name);
3066 if (sec->spec.sorted)
3075 print_statement_list (w->children.head, os);
3078 /* Print a group statement. */
3081 print_group (lang_group_statement_type *s,
3082 lang_output_section_statement_type *os)
3084 fprintf (config.map_file, "START GROUP\n");
3085 print_statement_list (s->children.head, os);
3086 fprintf (config.map_file, "END GROUP\n");
3089 /* Print the list of statements in S.
3090 This can be called for any statement type. */
3093 print_statement_list (lang_statement_union_type *s,
3094 lang_output_section_statement_type *os)
3098 print_statement (s, os);
3103 /* Print the first statement in statement list S.
3104 This can be called for any statement type. */
3107 print_statement (lang_statement_union_type *s,
3108 lang_output_section_statement_type *os)
3110 switch (s->header.type)
3113 fprintf (config.map_file, _("Fail with %d\n"), s->header.type);
3116 case lang_constructors_statement_enum:
3117 if (constructor_list.head != NULL)
3119 if (constructors_sorted)
3120 minfo (" SORT (CONSTRUCTORS)\n");
3122 minfo (" CONSTRUCTORS\n");
3123 print_statement_list (constructor_list.head, os);
3126 case lang_wild_statement_enum:
3127 print_wild_statement (&s->wild_statement, os);
3129 case lang_address_statement_enum:
3130 print_address_statement (&s->address_statement);
3132 case lang_object_symbols_statement_enum:
3133 minfo (" CREATE_OBJECT_SYMBOLS\n");
3135 case lang_fill_statement_enum:
3136 print_fill_statement (&s->fill_statement);
3138 case lang_data_statement_enum:
3139 print_data_statement (&s->data_statement);
3141 case lang_reloc_statement_enum:
3142 print_reloc_statement (&s->reloc_statement);
3144 case lang_input_section_enum:
3145 print_input_section (&s->input_section);
3147 case lang_padding_statement_enum:
3148 print_padding_statement (&s->padding_statement);
3150 case lang_output_section_statement_enum:
3151 print_output_section_statement (&s->output_section_statement);
3153 case lang_assignment_statement_enum:
3154 print_assignment (&s->assignment_statement, os);
3156 case lang_target_statement_enum:
3157 fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
3159 case lang_output_statement_enum:
3160 minfo ("OUTPUT(%s", s->output_statement.name);
3161 if (output_target != NULL)
3162 minfo (" %s", output_target);
3165 case lang_input_statement_enum:
3166 print_input_statement (&s->input_statement);
3168 case lang_group_statement_enum:
3169 print_group (&s->group_statement, os);
3171 case lang_afile_asection_pair_statement_enum:
3178 print_statements (void)
3180 print_statement_list (statement_list.head, abs_output_section);
3183 /* Print the first N statements in statement list S to STDERR.
3184 If N == 0, nothing is printed.
3185 If N < 0, the entire list is printed.
3186 Intended to be called from GDB. */
3189 dprint_statement (lang_statement_union_type *s, int n)
3191 FILE *map_save = config.map_file;
3193 config.map_file = stderr;
3196 print_statement_list (s, abs_output_section);
3199 while (s && --n >= 0)
3201 print_statement (s, abs_output_section);
3206 config.map_file = map_save;
3210 insert_pad (lang_statement_union_type **ptr,
3212 unsigned int alignment_needed,
3213 asection *output_section,
3216 static fill_type zero_fill = { 1, { 0 } };
3217 lang_statement_union_type *pad;
3219 pad = ((lang_statement_union_type *)
3220 ((char *) ptr - offsetof (lang_statement_union_type, header.next)));
3221 if (ptr != &statement_list.head
3222 && pad->header.type == lang_padding_statement_enum
3223 && pad->padding_statement.output_section == output_section)
3225 /* Use the existing pad statement. The above test on output
3226 section is probably redundant, but it doesn't hurt to check. */
3230 /* Make a new padding statement, linked into existing chain. */
3231 pad = stat_alloc (sizeof (lang_padding_statement_type));
3232 pad->header.next = *ptr;
3234 pad->header.type = lang_padding_statement_enum;
3235 pad->padding_statement.output_section = output_section;
3238 pad->padding_statement.fill = fill;
3240 pad->padding_statement.output_offset = dot - output_section->vma;
3241 pad->padding_statement.size = alignment_needed;
3242 output_section->size += alignment_needed;
3245 /* Work out how much this section will move the dot point. */
3249 (lang_statement_union_type **this_ptr,
3250 lang_output_section_statement_type *output_section_statement,
3254 lang_input_section_type *is = &((*this_ptr)->input_section);
3255 asection *i = is->section;
3257 if (!is->ifile->just_syms_flag && (i->flags & SEC_EXCLUDE) == 0)
3259 unsigned int alignment_needed;
3262 /* Align this section first to the input sections requirement,
3263 then to the output section's requirement. If this alignment
3264 is greater than any seen before, then record it too. Perform
3265 the alignment by inserting a magic 'padding' statement. */
3267 if (output_section_statement->subsection_alignment != -1)
3268 i->alignment_power = output_section_statement->subsection_alignment;
3270 o = output_section_statement->bfd_section;
3271 if (o->alignment_power < i->alignment_power)
3272 o->alignment_power = i->alignment_power;
3274 alignment_needed = align_power (dot, i->alignment_power) - dot;
3276 if (alignment_needed != 0)
3278 insert_pad (this_ptr, fill, TO_SIZE (alignment_needed), o, dot);
3279 dot += alignment_needed;
3282 /* Remember where in the output section this input section goes. */
3284 i->output_offset = dot - o->vma;
3286 /* Mark how big the output section must be to contain this now. */
3287 dot += TO_ADDR (i->size);
3288 o->size = TO_SIZE (dot - o->vma);
3292 i->output_offset = i->vma - output_section_statement->bfd_section->vma;
3298 #define IGNORE_SECTION(s) \
3299 ((s->flags & SEC_NEVER_LOAD) != 0 \
3300 || (s->flags & SEC_ALLOC) == 0 \
3301 || ((s->flags & SEC_THREAD_LOCAL) != 0 \
3302 && (s->flags & SEC_LOAD) == 0) \
3305 /* Check to see if any allocated sections overlap with other allocated
3306 sections. This can happen if a linker script specifies the output
3307 section addresses of the two sections. */
3310 lang_check_section_addresses (void)
3314 /* Scan all sections in the output list. */
3315 for (s = output_bfd->sections; s != NULL; s = s->next)
3319 /* Ignore sections which are not loaded or which have no contents. */
3320 if (IGNORE_SECTION (s))
3323 /* Once we reach section 's' stop our seach. This prevents two
3324 warning messages from being produced, one for 'section A overlaps
3325 section B' and one for 'section B overlaps section A'. */
3326 for (os = output_bfd->sections; os != s; os = os->next)
3333 /* Only consider loadable sections with real contents. */
3334 if (IGNORE_SECTION (os))
3337 /* We must check the sections' LMA addresses not their
3338 VMA addresses because overlay sections can have
3339 overlapping VMAs but they must have distinct LMAs. */
3340 s_start = bfd_section_lma (output_bfd, s);
3341 os_start = bfd_section_lma (output_bfd, os);
3342 s_end = s_start + TO_ADDR (s->size) - 1;
3343 os_end = os_start + TO_ADDR (os->size) - 1;
3345 /* Look for an overlap. */
3346 if ((s_end < os_start) || (s_start > os_end))
3350 _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
3351 s->name, s_start, s_end, os->name, os_start, os_end);
3353 /* Once we have found one overlap for this section,
3354 stop looking for others. */
3360 /* Make sure the new address is within the region. We explicitly permit the
3361 current address to be at the exact end of the region when the address is
3362 non-zero, in case the region is at the end of addressable memory and the
3363 calculation wraps around. */
3366 os_region_check (lang_output_section_statement_type *os,
3367 lang_memory_region_type *region,
3371 if ((region->current < region->origin
3372 || (region->current - region->origin > region->length))
3373 && ((region->current != region->origin + region->length)
3378 einfo (_("%X%P: address 0x%v of %B section %s"
3379 " is not within region %s\n"),
3381 os->bfd_section->owner,
3382 os->bfd_section->name,
3387 einfo (_("%X%P: region %s is full (%B section %s)\n"),
3389 os->bfd_section->owner,
3390 os->bfd_section->name);
3392 /* Reset the region pointer. */
3393 region->current = region->origin;
3397 /* Set the sizes for all the output sections. */
3400 lang_size_sections_1
3401 (lang_statement_union_type *s,
3402 lang_output_section_statement_type *output_section_statement,
3403 lang_statement_union_type **prev,
3407 bfd_boolean check_regions)
3409 /* Size up the sections from their constituent parts. */
3410 for (; s != NULL; s = s->header.next)
3412 switch (s->header.type)
3414 case lang_output_section_statement_enum:
3417 lang_output_section_statement_type *os;
3419 os = &s->output_section_statement;
3420 if (os->bfd_section == NULL)
3421 /* This section was never actually created. */
3424 /* If this is a COFF shared library section, use the size and
3425 address from the input section. FIXME: This is COFF
3426 specific; it would be cleaner if there were some other way
3427 to do this, but nothing simple comes to mind. */
3428 if ((bfd_get_flavour (output_bfd) == bfd_target_ecoff_flavour
3429 || bfd_get_flavour (output_bfd) == bfd_target_coff_flavour)
3430 && (os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
3434 if (os->children.head == NULL
3435 || os->children.head->header.next != NULL
3436 || (os->children.head->header.type
3437 != lang_input_section_enum))
3438 einfo (_("%P%X: Internal error on COFF shared library"
3439 " section %s\n"), os->name);
3441 input = os->children.head->input_section.section;
3442 bfd_set_section_vma (os->bfd_section->owner,
3444 bfd_section_vma (input->owner, input));
3445 os->bfd_section->size = input->size;
3449 if (bfd_is_abs_section (os->bfd_section))
3451 /* No matter what happens, an abs section starts at zero. */
3452 ASSERT (os->bfd_section->vma == 0);
3456 if (os->addr_tree == NULL)
3458 /* No address specified for this section, get one
3459 from the region specification. */
3460 if (os->region == NULL
3461 || ((os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD))
3462 && os->region->name[0] == '*'
3463 && strcmp (os->region->name,
3464 DEFAULT_MEMORY_REGION) == 0))
3466 os->region = lang_memory_default (os->bfd_section);
3469 /* If a loadable section is using the default memory
3470 region, and some non default memory regions were
3471 defined, issue an error message. */
3472 if (!IGNORE_SECTION (os->bfd_section)
3473 && ! link_info.relocatable
3475 && strcmp (os->region->name,
3476 DEFAULT_MEMORY_REGION) == 0
3477 && lang_memory_region_list != NULL
3478 && (strcmp (lang_memory_region_list->name,
3479 DEFAULT_MEMORY_REGION) != 0
3480 || lang_memory_region_list->next != NULL))
3482 /* By default this is an error rather than just a
3483 warning because if we allocate the section to the
3484 default memory region we can end up creating an
3485 excessively large binary, or even seg faulting when
3486 attempting to perform a negative seek. See
3487 sources.redhat.com/ml/binutils/2003-04/msg00423.html
3488 for an example of this. This behaviour can be
3489 overridden by the using the --no-check-sections
3491 if (command_line.check_section_addresses)
3492 einfo (_("%P%F: error: no memory region specified"
3493 " for loadable section `%s'\n"),
3494 bfd_get_section_name (output_bfd,
3497 einfo (_("%P: warning: no memory region specified"
3498 " for loadable section `%s'\n"),
3499 bfd_get_section_name (output_bfd,
3503 dot = os->region->current;
3505 if (os->section_alignment == -1)
3510 dot = align_power (dot,
3511 os->bfd_section->alignment_power);
3513 if (dot != olddot && config.warn_section_align)
3514 einfo (_("%P: warning: changing start of section"
3515 " %s by %u bytes\n"),
3516 os->name, (unsigned int) (dot - olddot));
3524 r = exp_fold_tree (os->addr_tree,
3526 lang_allocating_phase_enum,
3531 einfo (_("%F%S: non constant or forward reference"
3532 " address expression for section %s\n"),
3535 dot = r.value + r.section->bfd_section->vma;
3538 /* The section starts here.
3539 First, align to what the section needs. */
3541 if (os->section_alignment != -1)
3542 dot = align_power (dot, os->section_alignment);
3544 bfd_set_section_vma (0, os->bfd_section, dot);
3546 os->bfd_section->output_offset = 0;
3549 lang_size_sections_1 (os->children.head, os, &os->children.head,
3550 os->fill, dot, relax, check_regions);
3552 /* Put the section within the requested block size, or
3553 align at the block boundary. */
3554 after = ((os->bfd_section->vma
3555 + TO_ADDR (os->bfd_section->size)
3556 + os->block_value - 1)
3557 & - (bfd_vma) os->block_value);
3559 if (bfd_is_abs_section (os->bfd_section))
3560 ASSERT (after == os->bfd_section->vma);
3562 os->bfd_section->size
3563 = TO_SIZE (after - os->bfd_section->vma);
3565 dot = os->bfd_section->vma;
3566 /* .tbss sections effectively have zero size. */
3567 if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0
3568 || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0
3569 || link_info.relocatable)
3570 dot += TO_ADDR (os->bfd_section->size);
3574 if (os->update_dot_tree != 0)
3575 exp_fold_tree (os->update_dot_tree, abs_output_section,
3576 lang_allocating_phase_enum, dot, &dot);
3578 /* Update dot in the region ?
3579 We only do this if the section is going to be allocated,
3580 since unallocated sections do not contribute to the region's
3581 overall size in memory.
3583 If the SEC_NEVER_LOAD bit is not set, it will affect the
3584 addresses of sections after it. We have to update
3586 if (os->region != NULL
3587 && ((os->bfd_section->flags & SEC_NEVER_LOAD) == 0
3588 || (os->bfd_section->flags & (SEC_ALLOC | SEC_LOAD))))
3590 os->region->current = dot;
3593 /* Make sure the new address is within the region. */
3594 os_region_check (os, os->region, os->addr_tree,
3595 os->bfd_section->vma);
3597 /* If there's no load address specified, use the run
3598 region as the load region. */
3599 if (os->lma_region == NULL && os->load_base == NULL)
3600 os->lma_region = os->region;
3602 if (os->lma_region != NULL && os->lma_region != os->region)
3604 /* Set load_base, which will be handled later. */
3605 os->load_base = exp_intop (os->lma_region->current);
3606 os->lma_region->current +=
3607 TO_ADDR (os->bfd_section->size);
3609 os_region_check (os, os->lma_region, NULL,
3610 os->bfd_section->lma);
3616 case lang_constructors_statement_enum:
3617 dot = lang_size_sections_1 (constructor_list.head,
3618 output_section_statement,
3619 &s->wild_statement.children.head,
3620 fill, dot, relax, check_regions);
3623 case lang_data_statement_enum:
3625 unsigned int size = 0;
3627 s->data_statement.output_vma =
3628 dot - output_section_statement->bfd_section->vma;
3629 s->data_statement.output_section =
3630 output_section_statement->bfd_section;
3632 /* We might refer to provided symbols in the expression, and
3633 need to mark them as needed. */
3634 exp_fold_tree (s->data_statement.exp, abs_output_section,
3635 lang_allocating_phase_enum, dot, &dot);
3637 switch (s->data_statement.type)
3655 if (size < TO_SIZE ((unsigned) 1))
3656 size = TO_SIZE ((unsigned) 1);
3657 dot += TO_ADDR (size);
3658 output_section_statement->bfd_section->size += size;
3662 case lang_reloc_statement_enum:
3666 s->reloc_statement.output_vma =
3667 dot - output_section_statement->bfd_section->vma;
3668 s->reloc_statement.output_section =
3669 output_section_statement->bfd_section;
3670 size = bfd_get_reloc_size (s->reloc_statement.howto);
3671 dot += TO_ADDR (size);
3672 output_section_statement->bfd_section->size += size;
3676 case lang_wild_statement_enum:
3678 dot = lang_size_sections_1 (s->wild_statement.children.head,
3679 output_section_statement,
3680 &s->wild_statement.children.head,
3681 fill, dot, relax, check_regions);
3685 case lang_object_symbols_statement_enum:
3686 link_info.create_object_symbols_section =
3687 output_section_statement->bfd_section;
3689 case lang_output_statement_enum:
3690 case lang_target_statement_enum:
3692 case lang_input_section_enum:
3696 i = (*prev)->input_section.section;
3701 if (! bfd_relax_section (i->owner, i, &link_info, &again))
3702 einfo (_("%P%F: can't relax section: %E\n"));
3706 dot = size_input_section (prev, output_section_statement,
3707 output_section_statement->fill, dot);
3710 case lang_input_statement_enum:
3712 case lang_fill_statement_enum:
3713 s->fill_statement.output_section =
3714 output_section_statement->bfd_section;
3716 fill = s->fill_statement.fill;
3718 case lang_assignment_statement_enum:
3720 bfd_vma newdot = dot;
3722 exp_fold_tree (s->assignment_statement.exp,
3723 output_section_statement,
3724 lang_allocating_phase_enum,
3730 if (output_section_statement == abs_output_section)
3732 /* If we don't have an output section, then just adjust
3733 the default memory address. */
3734 lang_memory_region_lookup (DEFAULT_MEMORY_REGION,
3735 FALSE)->current = newdot;
3739 /* Insert a pad after this statement. We can't
3740 put the pad before when relaxing, in case the
3741 assignment references dot. */
3742 insert_pad (&s->header.next, fill, TO_SIZE (newdot - dot),
3743 output_section_statement->bfd_section, dot);
3745 /* Don't neuter the pad below when relaxing. */
3749 /* If dot is advanced, this implies that the section should
3750 have space allocated to it, unless the user has explicitly
3751 stated that the section should never be loaded. */
3752 if (!(output_section_statement->flags
3753 & (SEC_NEVER_LOAD | SEC_ALLOC)))
3754 output_section_statement->bfd_section->flags |= SEC_ALLOC;
3761 case lang_padding_statement_enum:
3762 /* If this is the first time lang_size_sections is called,
3763 we won't have any padding statements. If this is the
3764 second or later passes when relaxing, we should allow
3765 padding to shrink. If padding is needed on this pass, it
3766 will be added back in. */
3767 s->padding_statement.size = 0;
3769 /* Make sure output_offset is valid. If relaxation shrinks
3770 the section and this pad isn't needed, it's possible to
3771 have output_offset larger than the final size of the
3772 section. bfd_set_section_contents will complain even for
3773 a pad size of zero. */
3774 s->padding_statement.output_offset
3775 = dot - output_section_statement->bfd_section->vma;
3778 case lang_group_statement_enum:
3779 dot = lang_size_sections_1 (s->group_statement.children.head,
3780 output_section_statement,
3781 &s->group_statement.children.head,
3782 fill, dot, relax, check_regions);
3789 /* We can only get here when relaxing is turned on. */
3790 case lang_address_statement_enum:
3793 prev = &s->header.next;
3800 (lang_statement_union_type *s,
3801 lang_output_section_statement_type *output_section_statement,
3802 lang_statement_union_type **prev,
3806 bfd_boolean check_regions)
3810 /* Callers of exp_fold_tree need to increment this. */
3811 lang_statement_iteration++;
3813 exp_data_seg.phase = exp_dataseg_none;
3814 result = lang_size_sections_1 (s, output_section_statement, prev, fill,
3815 dot, relax, check_regions);
3816 if (exp_data_seg.phase == exp_dataseg_end_seen
3817 && link_info.relro && exp_data_seg.relro_end)
3819 /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_RELRO_END pair was seen, try
3820 to put exp_data_seg.relro on a (common) page boundary. */
3821 bfd_vma old_min_base, relro_end, maxpage;
3823 exp_data_seg.phase = exp_dataseg_relro_adjust;
3824 old_min_base = exp_data_seg.min_base;
3825 maxpage = exp_data_seg.maxpagesize;
3826 exp_data_seg.base += (-exp_data_seg.relro_end
3827 & (exp_data_seg.pagesize - 1));
3828 /* Compute the expected PT_GNU_RELRO segment end. */
3829 relro_end = (exp_data_seg.relro_end + exp_data_seg.pagesize - 1)
3830 & ~(exp_data_seg.pagesize - 1);
3831 if (old_min_base + maxpage < exp_data_seg.base)
3833 exp_data_seg.base -= maxpage;
3834 relro_end -= maxpage;
3836 result = lang_size_sections_1 (s, output_section_statement, prev, fill,
3837 dot, relax, check_regions);
3838 if (exp_data_seg.relro_end > relro_end)
3840 /* The alignment of sections between DATA_SEGMENT_ALIGN
3841 and DATA_SEGMENT_RELRO_END caused huge padding to be
3842 inserted at DATA_SEGMENT_RELRO_END. Try some other base. */
3844 unsigned int max_alignment_power = 0;
3846 /* Find maximum alignment power of sections between
3847 DATA_SEGMENT_ALIGN and DATA_SEGMENT_RELRO_END. */
3848 for (sec = output_bfd->sections; sec; sec = sec->next)
3849 if (sec->vma >= exp_data_seg.base
3850 && sec->vma < exp_data_seg.relro_end
3851 && sec->alignment_power > max_alignment_power)
3852 max_alignment_power = sec->alignment_power;
3854 if (((bfd_vma) 1 << max_alignment_power) < exp_data_seg.pagesize)
3856 if (exp_data_seg.base - (1 << max_alignment_power)
3858 exp_data_seg.base += exp_data_seg.pagesize;
3859 exp_data_seg.base -= (1 << max_alignment_power);
3860 result = lang_size_sections_1 (s, output_section_statement,
3861 prev, fill, dot, relax,
3865 link_info.relro_start = exp_data_seg.base;
3866 link_info.relro_end = exp_data_seg.relro_end;
3868 else if (exp_data_seg.phase == exp_dataseg_end_seen)
3870 /* If DATA_SEGMENT_ALIGN DATA_SEGMENT_END pair was seen, check whether
3871 a page could be saved in the data segment. */
3872 bfd_vma first, last;
3874 first = -exp_data_seg.base & (exp_data_seg.pagesize - 1);
3875 last = exp_data_seg.end & (exp_data_seg.pagesize - 1);
3877 && ((exp_data_seg.base & ~(exp_data_seg.pagesize - 1))
3878 != (exp_data_seg.end & ~(exp_data_seg.pagesize - 1)))
3879 && first + last <= exp_data_seg.pagesize)
3881 exp_data_seg.phase = exp_dataseg_adjust;
3882 lang_statement_iteration++;
3883 result = lang_size_sections_1 (s, output_section_statement, prev,
3884 fill, dot, relax, check_regions);
3891 /* Worker function for lang_do_assignments. Recursiveness goes here. */
3894 lang_do_assignments_1
3895 (lang_statement_union_type *s,
3896 lang_output_section_statement_type *output_section_statement,
3900 for (; s != NULL; s = s->header.next)
3902 switch (s->header.type)
3904 case lang_constructors_statement_enum:
3905 dot = lang_do_assignments_1 (constructor_list.head,
3906 output_section_statement,
3911 case lang_output_section_statement_enum:
3913 lang_output_section_statement_type *os;
3915 os = &(s->output_section_statement);
3916 if (os->bfd_section != NULL)
3918 dot = os->bfd_section->vma;
3919 lang_do_assignments_1 (os->children.head, os, os->fill, dot);
3920 /* .tbss sections effectively have zero size. */
3921 if ((os->bfd_section->flags & SEC_HAS_CONTENTS) != 0
3922 || (os->bfd_section->flags & SEC_THREAD_LOCAL) == 0
3923 || link_info.relocatable)
3924 dot += TO_ADDR (os->bfd_section->size);
3928 /* If nothing has been placed into the output section then
3929 it won't have a bfd_section. */
3930 if (os->bfd_section)
3932 os->bfd_section->lma
3933 = exp_get_abs_int (os->load_base, 0, "load base",
3934 lang_final_phase_enum);
3939 case lang_wild_statement_enum:
3941 dot = lang_do_assignments_1 (s->wild_statement.children.head,
3942 output_section_statement,
3947 case lang_object_symbols_statement_enum:
3948 case lang_output_statement_enum:
3949 case lang_target_statement_enum:
3951 case lang_data_statement_enum:
3953 etree_value_type value;
3955 value = exp_fold_tree (s->data_statement.exp,
3957 lang_final_phase_enum, dot, &dot);
3959 einfo (_("%F%P: invalid data statement\n"));
3960 s->data_statement.value
3961 = value.value + value.section->bfd_section->vma;
3965 switch (s->data_statement.type)
3983 if (size < TO_SIZE ((unsigned) 1))
3984 size = TO_SIZE ((unsigned) 1);
3985 dot += TO_ADDR (size);
3989 case lang_reloc_statement_enum:
3991 etree_value_type value;
3993 value = exp_fold_tree (s->reloc_statement.addend_exp,
3995 lang_final_phase_enum, dot, &dot);
3996 s->reloc_statement.addend_value = value.value;
3998 einfo (_("%F%P: invalid reloc statement\n"));
4000 dot += TO_ADDR (bfd_get_reloc_size (s->reloc_statement.howto));
4003 case lang_input_section_enum:
4005 asection *in = s->input_section.section;
4007 if ((in->flags & SEC_EXCLUDE) == 0)
4008 dot += TO_ADDR (in->size);
4012 case lang_input_statement_enum:
4014 case lang_fill_statement_enum:
4015 fill = s->fill_statement.fill;
4017 case lang_assignment_statement_enum:
4019 exp_fold_tree (s->assignment_statement.exp,
4020 output_section_statement,
4021 lang_final_phase_enum,
4027 case lang_padding_statement_enum:
4028 dot += TO_ADDR (s->padding_statement.size);
4031 case lang_group_statement_enum:
4032 dot = lang_do_assignments_1 (s->group_statement.children.head,
4033 output_section_statement,
4041 case lang_address_statement_enum:
4051 (lang_statement_union_type *s,
4052 lang_output_section_statement_type *output_section_statement,
4056 /* Callers of exp_fold_tree need to increment this. */
4057 lang_statement_iteration++;
4058 lang_do_assignments_1 (s, output_section_statement, fill, dot);
4061 /* Fix any .startof. or .sizeof. symbols. When the assemblers see the
4062 operator .startof. (section_name), it produces an undefined symbol
4063 .startof.section_name. Similarly, when it sees
4064 .sizeof. (section_name), it produces an undefined symbol
4065 .sizeof.section_name. For all the output sections, we look for
4066 such symbols, and set them to the correct value. */
4069 lang_set_startof (void)
4073 if (link_info.relocatable)
4076 for (s = output_bfd->sections; s != NULL; s = s->next)
4078 const char *secname;
4080 struct bfd_link_hash_entry *h;
4082 secname = bfd_get_section_name (output_bfd, s);
4083 buf = xmalloc (10 + strlen (secname));
4085 sprintf (buf, ".startof.%s", secname);
4086 h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE);
4087 if (h != NULL && h->type == bfd_link_hash_undefined)
4089 h->type = bfd_link_hash_defined;
4090 h->u.def.value = bfd_get_section_vma (output_bfd, s);
4091 h->u.def.section = bfd_abs_section_ptr;
4094 sprintf (buf, ".sizeof.%s", secname);
4095 h = bfd_link_hash_lookup (link_info.hash, buf, FALSE, FALSE, TRUE);
4096 if (h != NULL && h->type == bfd_link_hash_undefined)
4098 h->type = bfd_link_hash_defined;
4099 h->u.def.value = TO_ADDR (s->size);
4100 h->u.def.section = bfd_abs_section_ptr;
4110 struct bfd_link_hash_entry *h;
4113 if (link_info.relocatable || link_info.shared)
4118 if (entry_symbol.name == NULL)
4120 /* No entry has been specified. Look for start, but don't warn
4121 if we don't find it. */
4122 entry_symbol.name = "start";
4126 h = bfd_link_hash_lookup (link_info.hash, entry_symbol.name,
4127 FALSE, FALSE, TRUE);
4129 && (h->type == bfd_link_hash_defined
4130 || h->type == bfd_link_hash_defweak)
4131 && h->u.def.section->output_section != NULL)
4135 val = (h->u.def.value
4136 + bfd_get_section_vma (output_bfd,
4137 h->u.def.section->output_section)
4138 + h->u.def.section->output_offset);
4139 if (! bfd_set_start_address (output_bfd, val))
4140 einfo (_("%P%F:%s: can't set start address\n"), entry_symbol.name);
4147 /* We couldn't find the entry symbol. Try parsing it as a
4149 val = bfd_scan_vma (entry_symbol.name, &send, 0);
4152 if (! bfd_set_start_address (output_bfd, val))
4153 einfo (_("%P%F: can't set start address\n"));
4159 /* Can't find the entry symbol, and it's not a number. Use
4160 the first address in the text section. */
4161 ts = bfd_get_section_by_name (output_bfd, entry_section);
4165 einfo (_("%P: warning: cannot find entry symbol %s;"
4166 " defaulting to %V\n"),
4168 bfd_get_section_vma (output_bfd, ts));
4169 if (! bfd_set_start_address (output_bfd,
4170 bfd_get_section_vma (output_bfd,
4172 einfo (_("%P%F: can't set start address\n"));
4177 einfo (_("%P: warning: cannot find entry symbol %s;"
4178 " not setting start address\n"),
4184 /* Don't bfd_hash_table_free (&lang_definedness_table);
4185 map file output may result in a call of lang_track_definedness. */
4188 /* This is a small function used when we want to ignore errors from
4192 ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...)
4194 /* Don't do anything. */
4197 /* Check that the architecture of all the input files is compatible
4198 with the output file. Also call the backend to let it do any
4199 other checking that is needed. */
4204 lang_statement_union_type *file;
4206 const bfd_arch_info_type *compatible;
4208 for (file = file_chain.head; file != NULL; file = file->input_statement.next)
4210 input_bfd = file->input_statement.the_bfd;
4212 = bfd_arch_get_compatible (input_bfd, output_bfd,
4213 command_line.accept_unknown_input_arch);
4215 /* In general it is not possible to perform a relocatable
4216 link between differing object formats when the input
4217 file has relocations, because the relocations in the
4218 input format may not have equivalent representations in
4219 the output format (and besides BFD does not translate
4220 relocs for other link purposes than a final link). */
4221 if ((link_info.relocatable || link_info.emitrelocations)
4222 && (compatible == NULL
4223 || bfd_get_flavour (input_bfd) != bfd_get_flavour (output_bfd))
4224 && (bfd_get_file_flags (input_bfd) & HAS_RELOC) != 0)
4226 einfo (_("%P%F: Relocatable linking with relocations from"
4227 " format %s (%B) to format %s (%B) is not supported\n"),
4228 bfd_get_target (input_bfd), input_bfd,
4229 bfd_get_target (output_bfd), output_bfd);
4230 /* einfo with %F exits. */
4233 if (compatible == NULL)
4235 if (command_line.warn_mismatch)
4236 einfo (_("%P: warning: %s architecture of input file `%B'"
4237 " is incompatible with %s output\n"),
4238 bfd_printable_name (input_bfd), input_bfd,
4239 bfd_printable_name (output_bfd));
4241 else if (bfd_count_sections (input_bfd))
4243 /* If the input bfd has no contents, it shouldn't set the
4244 private data of the output bfd. */
4246 bfd_error_handler_type pfn = NULL;
4248 /* If we aren't supposed to warn about mismatched input
4249 files, temporarily set the BFD error handler to a
4250 function which will do nothing. We still want to call
4251 bfd_merge_private_bfd_data, since it may set up
4252 information which is needed in the output file. */
4253 if (! command_line.warn_mismatch)
4254 pfn = bfd_set_error_handler (ignore_bfd_errors);
4255 if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
4257 if (command_line.warn_mismatch)
4258 einfo (_("%P%X: failed to merge target specific data"
4259 " of file %B\n"), input_bfd);
4261 if (! command_line.warn_mismatch)
4262 bfd_set_error_handler (pfn);
4267 /* Look through all the global common symbols and attach them to the
4268 correct section. The -sort-common command line switch may be used
4269 to roughly sort the entries by size. */
4274 if (command_line.inhibit_common_definition)
4276 if (link_info.relocatable
4277 && ! command_line.force_common_definition)
4280 if (! config.sort_common)
4281 bfd_link_hash_traverse (link_info.hash, lang_one_common, NULL);
4286 for (power = 4; power >= 0; power--)
4287 bfd_link_hash_traverse (link_info.hash, lang_one_common, &power);
4291 /* Place one common symbol in the correct section. */
4294 lang_one_common (struct bfd_link_hash_entry *h, void *info)
4296 unsigned int power_of_two;
4300 if (h->type != bfd_link_hash_common)
4304 power_of_two = h->u.c.p->alignment_power;
4306 if (config.sort_common
4307 && power_of_two < (unsigned int) *(int *) info)
4310 section = h->u.c.p->section;
4312 /* Increase the size of the section to align the common sym. */
4313 section->size += ((bfd_vma) 1 << (power_of_two + opb_shift)) - 1;
4314 section->size &= (- (bfd_vma) 1 << (power_of_two + opb_shift));
4316 /* Adjust the alignment if necessary. */
4317 if (power_of_two > section->alignment_power)
4318 section->alignment_power = power_of_two;
4320 /* Change the symbol from common to defined. */
4321 h->type = bfd_link_hash_defined;
4322 h->u.def.section = section;
4323 h->u.def.value = section->size;
4325 /* Increase the size of the section. */
4326 section->size += size;
4328 /* Make sure the section is allocated in memory, and make sure that
4329 it is no longer a common section. */
4330 section->flags |= SEC_ALLOC;
4331 section->flags &= ~SEC_IS_COMMON;
4333 if (config.map_file != NULL)
4335 static bfd_boolean header_printed;
4340 if (! header_printed)
4342 minfo (_("\nAllocating common symbols\n"));
4343 minfo (_("Common symbol size file\n\n"));
4344 header_printed = TRUE;
4347 name = demangle (h->root.string);
4349 len = strlen (name);
4364 if (size <= 0xffffffff)
4365 sprintf (buf, "%lx", (unsigned long) size);
4367 sprintf_vma (buf, size);
4377 minfo ("%B\n", section->owner);
4383 /* Run through the input files and ensure that every input section has
4384 somewhere to go. If one is found without a destination then create
4385 an input request and place it into the statement tree. */
4388 lang_place_orphans (void)
4390 LANG_FOR_EACH_INPUT_STATEMENT (file)
4394 for (s = file->the_bfd->sections; s != NULL; s = s->next)
4396 if (s->output_section == NULL)
4398 /* This section of the file is not attached, root
4399 around for a sensible place for it to go. */
4401 if (file->just_syms_flag)
4402 bfd_link_just_syms (file->the_bfd, s, &link_info);
4403 else if ((s->flags & SEC_EXCLUDE) != 0)
4404 s->output_section = bfd_abs_section_ptr;
4405 else if (strcmp (s->name, "COMMON") == 0)
4407 /* This is a lonely common section which must have
4408 come from an archive. We attach to the section
4409 with the wildcard. */
4410 if (! link_info.relocatable
4411 || command_line.force_common_definition)
4413 if (default_common_section == NULL)
4415 default_common_section =
4416 lang_output_section_statement_lookup (".bss");
4419 lang_add_section (&default_common_section->children, s,
4420 default_common_section, file);
4423 else if (ldemul_place_orphan (file, s))
4427 lang_output_section_statement_type *os;
4429 os = lang_output_section_statement_lookup (s->name);
4430 lang_add_section (&os->children, s, os, file);
4438 lang_set_flags (lang_memory_region_type *ptr, const char *flags, int invert)
4440 flagword *ptr_flags;
4442 ptr_flags = invert ? &ptr->not_flags : &ptr->flags;
4448 *ptr_flags |= SEC_ALLOC;
4452 *ptr_flags |= SEC_READONLY;
4456 *ptr_flags |= SEC_DATA;
4460 *ptr_flags |= SEC_CODE;
4465 *ptr_flags |= SEC_LOAD;
4469 einfo (_("%P%F: invalid syntax in flags\n"));
4476 /* Call a function on each input file. This function will be called
4477 on an archive, but not on the elements. */
4480 lang_for_each_input_file (void (*func) (lang_input_statement_type *))
4482 lang_input_statement_type *f;
4484 for (f = (lang_input_statement_type *) input_file_chain.head;
4486 f = (lang_input_statement_type *) f->next_real_file)
4490 /* Call a function on each file. The function will be called on all
4491 the elements of an archive which are included in the link, but will
4492 not be called on the archive file itself. */
4495 lang_for_each_file (void (*func) (lang_input_statement_type *))
4497 LANG_FOR_EACH_INPUT_STATEMENT (f)
4504 ldlang_add_file (lang_input_statement_type *entry)
4508 lang_statement_append (&file_chain,
4509 (lang_statement_union_type *) entry,
4512 /* The BFD linker needs to have a list of all input BFDs involved in
4514 ASSERT (entry->the_bfd->link_next == NULL);
4515 ASSERT (entry->the_bfd != output_bfd);
4516 for (pp = &link_info.input_bfds; *pp != NULL; pp = &(*pp)->link_next)
4518 *pp = entry->the_bfd;
4519 entry->the_bfd->usrdata = entry;
4520 bfd_set_gp_size (entry->the_bfd, g_switch_value);
4522 /* Look through the sections and check for any which should not be
4523 included in the link. We need to do this now, so that we can
4524 notice when the backend linker tries to report multiple
4525 definition errors for symbols which are in sections we aren't
4526 going to link. FIXME: It might be better to entirely ignore
4527 symbols which are defined in sections which are going to be
4528 discarded. This would require modifying the backend linker for
4529 each backend which might set the SEC_LINK_ONCE flag. If we do
4530 this, we should probably handle SEC_EXCLUDE in the same way. */
4532 bfd_map_over_sections (entry->the_bfd, section_already_linked, entry);
4536 lang_add_output (const char *name, int from_script)
4538 /* Make -o on command line override OUTPUT in script. */
4539 if (!had_output_filename || !from_script)
4541 output_filename = name;
4542 had_output_filename = TRUE;
4546 static lang_output_section_statement_type *current_section;
4557 for (l = 0; l < 32; l++)
4559 if (i >= (unsigned int) x)
4567 lang_output_section_statement_type *
4568 lang_enter_output_section_statement (const char *output_section_statement_name,
4569 etree_type *address_exp,
4570 enum section_type sectype,
4572 etree_type *subalign,
4576 lang_output_section_statement_type *os;
4580 lang_output_section_statement_lookup_1 (output_section_statement_name,
4583 /* Make next things chain into subchain of this. */
4585 if (os->addr_tree == NULL)
4587 os->addr_tree = address_exp;
4589 os->sectype = sectype;
4590 if (sectype != noload_section)
4591 os->flags = SEC_NO_FLAGS;
4593 os->flags = SEC_NEVER_LOAD;
4594 os->block_value = 1;
4595 stat_ptr = &os->children;
4597 os->subsection_alignment =
4598 topower (exp_get_value_int (subalign, -1, "subsection alignment", 0));
4599 os->section_alignment =
4600 topower (exp_get_value_int (align, -1, "section alignment", 0));
4602 os->load_base = ebase;
4609 lang_output_statement_type *new =
4610 new_stat (lang_output_statement, stat_ptr);
4612 new->name = output_filename;
4615 /* Reset the current counters in the regions. */
4618 lang_reset_memory_regions (void)
4620 lang_memory_region_type *p = lang_memory_region_list;
4623 for (p = lang_memory_region_list; p != NULL; p = p->next)
4625 p->old_length = (bfd_size_type) (p->current - p->origin);
4626 p->current = p->origin;
4629 for (o = output_bfd->sections; o != NULL; o = o->next)
4631 /* Save the last size for possible use by bfd_relax_section. */
4632 o->rawsize = o->size;
4637 /* Worker for lang_gc_sections_1. */
4640 gc_section_callback (lang_wild_statement_type *ptr,
4641 struct wildcard_list *sec ATTRIBUTE_UNUSED,
4643 lang_input_statement_type *file ATTRIBUTE_UNUSED,
4644 void *data ATTRIBUTE_UNUSED)
4646 /* If the wild pattern was marked KEEP, the member sections
4647 should be as well. */
4648 if (ptr->keep_sections)
4649 section->flags |= SEC_KEEP;
4652 /* Iterate over sections marking them against GC. */
4655 lang_gc_sections_1 (lang_statement_union_type *s)
4657 for (; s != NULL; s = s->header.next)
4659 switch (s->header.type)
4661 case lang_wild_statement_enum:
4662 walk_wild (&s->wild_statement, gc_section_callback, NULL);
4664 case lang_constructors_statement_enum:
4665 lang_gc_sections_1 (constructor_list.head);
4667 case lang_output_section_statement_enum:
4668 lang_gc_sections_1 (s->output_section_statement.children.head);
4670 case lang_group_statement_enum:
4671 lang_gc_sections_1 (s->group_statement.children.head);
4680 lang_gc_sections (void)
4682 struct bfd_link_hash_entry *h;
4683 ldlang_undef_chain_list_type *ulist;
4685 /* Keep all sections so marked in the link script. */
4687 lang_gc_sections_1 (statement_list.head);
4689 /* Keep all sections containing symbols undefined on the command-line,
4690 and the section containing the entry symbol. */
4692 for (ulist = link_info.gc_sym_list; ulist; ulist = ulist->next)
4694 h = bfd_link_hash_lookup (link_info.hash, ulist->name,
4695 FALSE, FALSE, FALSE);
4698 && (h->type == bfd_link_hash_defined
4699 || h->type == bfd_link_hash_defweak)
4700 && ! bfd_is_abs_section (h->u.def.section))
4702 h->u.def.section->flags |= SEC_KEEP;
4706 /* SEC_EXCLUDE is ignored when doing a relocatable link, except in
4707 the special case of debug info. (See bfd/stabs.c)
4708 Twiddle the flag here, to simplify later linker code. */
4709 if (link_info.relocatable)
4711 LANG_FOR_EACH_INPUT_STATEMENT (f)
4714 for (sec = f->the_bfd->sections; sec != NULL; sec = sec->next)
4715 if ((sec->flags & SEC_DEBUGGING) == 0)
4716 sec->flags &= ~SEC_EXCLUDE;
4720 if (command_line.gc_sections)
4721 bfd_gc_sections (output_bfd, &link_info);
4727 current_target = default_target;
4729 /* Open the output file. */
4730 lang_for_each_statement (ldlang_open_output);
4733 ldemul_create_output_section_statements ();
4735 /* Add to the hash table all undefineds on the command line. */
4736 lang_place_undefineds ();
4738 if (!bfd_section_already_linked_table_init ())
4739 einfo (_("%P%F: Failed to create hash table\n"));
4741 /* Create a bfd for each input file. */
4742 current_target = default_target;
4743 open_input_bfds (statement_list.head, FALSE);
4745 link_info.gc_sym_list = &entry_symbol;
4746 if (entry_symbol.name == NULL)
4747 link_info.gc_sym_list = ldlang_undef_chain_list_head;
4749 ldemul_after_open ();
4751 bfd_section_already_linked_table_free ();
4753 /* Make sure that we're not mixing architectures. We call this
4754 after all the input files have been opened, but before we do any
4755 other processing, so that any operations merge_private_bfd_data
4756 does on the output file will be known during the rest of the
4760 /* Handle .exports instead of a version script if we're told to do so. */
4761 if (command_line.version_exports_section)
4762 lang_do_version_exports_section ();
4764 /* Build all sets based on the information gathered from the input
4766 ldctor_build_sets ();
4768 /* Remove unreferenced sections if asked to. */
4769 lang_gc_sections ();
4771 /* Size up the common data. */
4774 /* Update wild statements. */
4775 update_wild_statements (statement_list.head);
4777 /* Run through the contours of the script and attach input sections
4778 to the correct output sections. */
4779 map_input_to_output_sections (statement_list.head, NULL, NULL);
4781 /* Find any sections not attached explicitly and handle them. */
4782 lang_place_orphans ();
4784 if (! link_info.relocatable)
4788 /* Merge SEC_MERGE sections. This has to be done after GC of
4789 sections, so that GCed sections are not merged, but before
4790 assigning dynamic symbols, since removing whole input sections
4792 bfd_merge_sections (output_bfd, &link_info);
4794 /* Look for a text section and set the readonly attribute in it. */
4795 found = bfd_get_section_by_name (output_bfd, ".text");
4799 if (config.text_read_only)
4800 found->flags |= SEC_READONLY;
4802 found->flags &= ~SEC_READONLY;
4806 /* Do anything special before sizing sections. This is where ELF
4807 and other back-ends size dynamic sections. */
4808 ldemul_before_allocation ();
4810 if (!link_info.relocatable)
4811 strip_excluded_output_sections ();
4813 /* We must record the program headers before we try to fix the
4814 section positions, since they will affect SIZEOF_HEADERS. */
4815 lang_record_phdrs ();
4817 /* Size up the sections. */
4818 lang_size_sections (statement_list.head, abs_output_section,
4819 &statement_list.head, 0, 0, NULL,
4820 command_line.relax ? FALSE : TRUE);
4822 /* Now run around and relax if we can. */
4823 if (command_line.relax)
4825 /* Keep relaxing until bfd_relax_section gives up. */
4826 bfd_boolean relax_again;
4830 relax_again = FALSE;
4832 /* Note: pe-dll.c does something like this also. If you find
4833 you need to change this code, you probably need to change
4834 pe-dll.c also. DJ */
4836 /* Do all the assignments with our current guesses as to
4838 lang_do_assignments (statement_list.head, abs_output_section,
4841 /* We must do this after lang_do_assignments, because it uses
4843 lang_reset_memory_regions ();
4845 /* Perform another relax pass - this time we know where the
4846 globals are, so can make a better guess. */
4847 lang_size_sections (statement_list.head, abs_output_section,
4848 &statement_list.head, 0, 0, &relax_again, FALSE);
4850 /* If the normal relax is done and the relax finalize pass
4851 is not performed yet, we perform another relax pass. */
4852 if (!relax_again && link_info.need_relax_finalize)
4854 link_info.need_relax_finalize = FALSE;
4858 while (relax_again);
4860 /* Final extra sizing to report errors. */
4861 lang_do_assignments (statement_list.head, abs_output_section, NULL, 0);
4862 lang_reset_memory_regions ();
4863 lang_size_sections (statement_list.head, abs_output_section,
4864 &statement_list.head, 0, 0, NULL, TRUE);
4867 /* See if anything special should be done now we know how big
4869 ldemul_after_allocation ();
4871 /* Fix any .startof. or .sizeof. symbols. */
4872 lang_set_startof ();
4874 /* Do all the assignments, now that we know the final resting places
4875 of all the symbols. */
4877 lang_do_assignments (statement_list.head, abs_output_section, NULL, 0);
4879 /* Make sure that the section addresses make sense. */
4880 if (! link_info.relocatable
4881 && command_line.check_section_addresses)
4882 lang_check_section_addresses ();
4890 /* EXPORTED TO YACC */
4893 lang_add_wild (struct wildcard_spec *filespec,
4894 struct wildcard_list *section_list,
4895 bfd_boolean keep_sections)
4897 struct wildcard_list *curr, *next;
4898 lang_wild_statement_type *new;
4900 /* Reverse the list as the parser puts it back to front. */
4901 for (curr = section_list, section_list = NULL;
4903 section_list = curr, curr = next)
4905 if (curr->spec.name != NULL && strcmp (curr->spec.name, "COMMON") == 0)
4906 placed_commons = TRUE;
4909 curr->next = section_list;
4912 if (filespec != NULL && filespec->name != NULL)
4914 if (strcmp (filespec->name, "*") == 0)
4915 filespec->name = NULL;
4916 else if (! wildcardp (filespec->name))
4917 lang_has_input_file = TRUE;
4920 new = new_stat (lang_wild_statement, stat_ptr);
4921 new->filename = NULL;
4922 new->filenames_sorted = FALSE;
4923 if (filespec != NULL)
4925 new->filename = filespec->name;
4926 new->filenames_sorted = filespec->sorted == by_name;
4928 new->section_list = section_list;
4929 new->keep_sections = keep_sections;
4930 lang_list_init (&new->children);
4934 lang_section_start (const char *name, etree_type *address,
4935 const segment_type *segment)
4937 lang_address_statement_type *ad;
4939 ad = new_stat (lang_address_statement, stat_ptr);
4940 ad->section_name = name;
4941 ad->address = address;
4942 ad->segment = segment;
4945 /* Set the start symbol to NAME. CMDLINE is nonzero if this is called
4946 because of a -e argument on the command line, or zero if this is
4947 called by ENTRY in a linker script. Command line arguments take
4951 lang_add_entry (const char *name, bfd_boolean cmdline)
4953 if (entry_symbol.name == NULL
4955 || ! entry_from_cmdline)
4957 entry_symbol.name = name;
4958 entry_from_cmdline = cmdline;
4963 lang_add_target (const char *name)
4965 lang_target_statement_type *new = new_stat (lang_target_statement,
4973 lang_add_map (const char *name)
4980 map_option_f = TRUE;
4988 lang_add_fill (fill_type *fill)
4990 lang_fill_statement_type *new = new_stat (lang_fill_statement,
4997 lang_add_data (int type, union etree_union *exp)
5000 lang_data_statement_type *new = new_stat (lang_data_statement,
5008 /* Create a new reloc statement. RELOC is the BFD relocation type to
5009 generate. HOWTO is the corresponding howto structure (we could
5010 look this up, but the caller has already done so). SECTION is the
5011 section to generate a reloc against, or NAME is the name of the
5012 symbol to generate a reloc against. Exactly one of SECTION and
5013 NAME must be NULL. ADDEND is an expression for the addend. */
5016 lang_add_reloc (bfd_reloc_code_real_type reloc,
5017 reloc_howto_type *howto,
5020 union etree_union *addend)
5022 lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
5026 p->section = section;
5028 p->addend_exp = addend;
5030 p->addend_value = 0;
5031 p->output_section = NULL;
5035 lang_assignment_statement_type *
5036 lang_add_assignment (etree_type *exp)
5038 lang_assignment_statement_type *new = new_stat (lang_assignment_statement,
5046 lang_add_attribute (enum statement_enum attribute)
5048 new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr);
5052 lang_startup (const char *name)
5054 if (startup_file != NULL)
5056 einfo (_("%P%Fmultiple STARTUP files\n"));
5058 first_file->filename = name;
5059 first_file->local_sym_name = name;
5060 first_file->real = TRUE;
5062 startup_file = name;
5066 lang_float (bfd_boolean maybe)
5068 lang_float_flag = maybe;
5072 /* Work out the load- and run-time regions from a script statement, and
5073 store them in *LMA_REGION and *REGION respectively.
5075 MEMSPEC is the name of the run-time region, or the value of
5076 DEFAULT_MEMORY_REGION if the statement didn't specify one.
5077 LMA_MEMSPEC is the name of the load-time region, or null if the
5078 statement didn't specify one.HAVE_LMA_P is TRUE if the statement
5079 had an explicit load address.
5081 It is an error to specify both a load region and a load address. */
5084 lang_get_regions (lang_memory_region_type **region,
5085 lang_memory_region_type **lma_region,
5086 const char *memspec,
5087 const char *lma_memspec,
5088 bfd_boolean have_lma,
5089 bfd_boolean have_vma)
5091 *lma_region = lang_memory_region_lookup (lma_memspec, FALSE);
5093 /* If no runtime region or VMA has been specified, but the load region
5094 has been specified, then use the load region for the runtime region
5096 if (lma_memspec != NULL
5098 && strcmp (memspec, DEFAULT_MEMORY_REGION) == 0)
5099 *region = *lma_region;
5101 *region = lang_memory_region_lookup (memspec, FALSE);
5103 if (have_lma && lma_memspec != 0)
5104 einfo (_("%X%P:%S: section has both a load address and a load region\n"));
5108 lang_leave_output_section_statement (fill_type *fill, const char *memspec,
5109 lang_output_section_phdr_list *phdrs,
5110 const char *lma_memspec)
5112 lang_get_regions (¤t_section->region,
5113 ¤t_section->lma_region,
5114 memspec, lma_memspec,
5115 current_section->load_base != NULL,
5116 current_section->addr_tree != NULL);
5117 current_section->fill = fill;
5118 current_section->phdrs = phdrs;
5119 stat_ptr = &statement_list;
5122 /* Create an absolute symbol with the given name with the value of the
5123 address of first byte of the section named.
5125 If the symbol already exists, then do nothing. */
5128 lang_abs_symbol_at_beginning_of (const char *secname, const char *name)
5130 struct bfd_link_hash_entry *h;
5132 h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE);
5134 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
5136 if (h->type == bfd_link_hash_new
5137 || h->type == bfd_link_hash_undefined)
5141 h->type = bfd_link_hash_defined;
5143 sec = bfd_get_section_by_name (output_bfd, secname);
5147 h->u.def.value = bfd_get_section_vma (output_bfd, sec);
5149 h->u.def.section = bfd_abs_section_ptr;
5153 /* Create an absolute symbol with the given name with the value of the
5154 address of the first byte after the end of the section named.
5156 If the symbol already exists, then do nothing. */
5159 lang_abs_symbol_at_end_of (const char *secname, const char *name)
5161 struct bfd_link_hash_entry *h;
5163 h = bfd_link_hash_lookup (link_info.hash, name, TRUE, TRUE, TRUE);
5165 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
5167 if (h->type == bfd_link_hash_new
5168 || h->type == bfd_link_hash_undefined)
5172 h->type = bfd_link_hash_defined;
5174 sec = bfd_get_section_by_name (output_bfd, secname);
5178 h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
5179 + TO_ADDR (sec->size));
5181 h->u.def.section = bfd_abs_section_ptr;
5186 lang_statement_append (lang_statement_list_type *list,
5187 lang_statement_union_type *element,
5188 lang_statement_union_type **field)
5190 *(list->tail) = element;
5194 /* Set the output format type. -oformat overrides scripts. */
5197 lang_add_output_format (const char *format,
5202 if (output_target == NULL || !from_script)
5204 if (command_line.endian == ENDIAN_BIG
5207 else if (command_line.endian == ENDIAN_LITTLE
5211 output_target = format;
5215 /* Enter a group. This creates a new lang_group_statement, and sets
5216 stat_ptr to build new statements within the group. */
5219 lang_enter_group (void)
5221 lang_group_statement_type *g;
5223 g = new_stat (lang_group_statement, stat_ptr);
5224 lang_list_init (&g->children);
5225 stat_ptr = &g->children;
5228 /* Leave a group. This just resets stat_ptr to start writing to the
5229 regular list of statements again. Note that this will not work if
5230 groups can occur inside anything else which can adjust stat_ptr,
5231 but currently they can't. */
5234 lang_leave_group (void)
5236 stat_ptr = &statement_list;
5239 /* Add a new program header. This is called for each entry in a PHDRS
5240 command in a linker script. */
5243 lang_new_phdr (const char *name,
5245 bfd_boolean filehdr,
5250 struct lang_phdr *n, **pp;
5252 n = stat_alloc (sizeof (struct lang_phdr));
5255 n->type = exp_get_value_int (type, 0, "program header type",
5256 lang_final_phase_enum);
5257 n->filehdr = filehdr;
5262 for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
5267 /* Record the program header information in the output BFD. FIXME: We
5268 should not be calling an ELF specific function here. */
5271 lang_record_phdrs (void)
5275 lang_output_section_phdr_list *last;
5276 struct lang_phdr *l;
5277 lang_output_section_statement_type *os;
5280 secs = xmalloc (alc * sizeof (asection *));
5282 for (l = lang_phdr_list; l != NULL; l = l->next)
5289 for (os = &lang_output_section_statement.head->output_section_statement;
5293 lang_output_section_phdr_list *pl;
5295 if (os->constraint == -1)
5303 if (os->sectype == noload_section
5304 || os->bfd_section == NULL
5305 || (os->bfd_section->flags & SEC_ALLOC) == 0)
5310 if (os->bfd_section == NULL)
5313 for (; pl != NULL; pl = pl->next)
5315 if (strcmp (pl->name, l->name) == 0)
5320 secs = xrealloc (secs, alc * sizeof (asection *));
5322 secs[c] = os->bfd_section;
5329 if (l->flags == NULL)
5332 flags = exp_get_vma (l->flags, 0, "phdr flags",
5333 lang_final_phase_enum);
5338 at = exp_get_vma (l->at, 0, "phdr load address",
5339 lang_final_phase_enum);
5341 if (! bfd_record_phdr (output_bfd, l->type,
5342 l->flags != NULL, flags, l->at != NULL,
5343 at, l->filehdr, l->phdrs, c, secs))
5344 einfo (_("%F%P: bfd_record_phdr failed: %E\n"));
5349 /* Make sure all the phdr assignments succeeded. */
5350 for (os = &lang_output_section_statement.head->output_section_statement;
5354 lang_output_section_phdr_list *pl;
5356 if (os->constraint == -1
5357 || os->bfd_section == NULL)
5360 for (pl = os->phdrs;
5363 if (! pl->used && strcmp (pl->name, "NONE") != 0)
5364 einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"),
5365 os->name, pl->name);
5369 /* Record a list of sections which may not be cross referenced. */
5372 lang_add_nocrossref (lang_nocrossref_type *l)
5374 struct lang_nocrossrefs *n;
5376 n = xmalloc (sizeof *n);
5377 n->next = nocrossref_list;
5379 nocrossref_list = n;
5381 /* Set notice_all so that we get informed about all symbols. */
5382 link_info.notice_all = TRUE;
5385 /* Overlay handling. We handle overlays with some static variables. */
5387 /* The overlay virtual address. */
5388 static etree_type *overlay_vma;
5389 /* And subsection alignment. */
5390 static etree_type *overlay_subalign;
5392 /* An expression for the maximum section size seen so far. */
5393 static etree_type *overlay_max;
5395 /* A list of all the sections in this overlay. */
5397 struct overlay_list {
5398 struct overlay_list *next;
5399 lang_output_section_statement_type *os;
5402 static struct overlay_list *overlay_list;
5404 /* Start handling an overlay. */
5407 lang_enter_overlay (etree_type *vma_expr, etree_type *subalign)
5409 /* The grammar should prevent nested overlays from occurring. */
5410 ASSERT (overlay_vma == NULL
5411 && overlay_subalign == NULL
5412 && overlay_max == NULL);
5414 overlay_vma = vma_expr;
5415 overlay_subalign = subalign;
5418 /* Start a section in an overlay. We handle this by calling
5419 lang_enter_output_section_statement with the correct VMA.
5420 lang_leave_overlay sets up the LMA and memory regions. */
5423 lang_enter_overlay_section (const char *name)
5425 struct overlay_list *n;
5428 lang_enter_output_section_statement (name, overlay_vma, normal_section,
5429 0, overlay_subalign, 0, 0);
5431 /* If this is the first section, then base the VMA of future
5432 sections on this one. This will work correctly even if `.' is
5433 used in the addresses. */
5434 if (overlay_list == NULL)
5435 overlay_vma = exp_nameop (ADDR, name);
5437 /* Remember the section. */
5438 n = xmalloc (sizeof *n);
5439 n->os = current_section;
5440 n->next = overlay_list;
5443 size = exp_nameop (SIZEOF, name);
5445 /* Arrange to work out the maximum section end address. */
5446 if (overlay_max == NULL)
5449 overlay_max = exp_binop (MAX_K, overlay_max, size);
5452 /* Finish a section in an overlay. There isn't any special to do
5456 lang_leave_overlay_section (fill_type *fill,
5457 lang_output_section_phdr_list *phdrs)
5464 name = current_section->name;
5466 /* For now, assume that DEFAULT_MEMORY_REGION is the run-time memory
5467 region and that no load-time region has been specified. It doesn't
5468 really matter what we say here, since lang_leave_overlay will
5470 lang_leave_output_section_statement (fill, DEFAULT_MEMORY_REGION, phdrs, 0);
5472 /* Define the magic symbols. */
5474 clean = xmalloc (strlen (name) + 1);
5476 for (s1 = name; *s1 != '\0'; s1++)
5477 if (ISALNUM (*s1) || *s1 == '_')
5481 buf = xmalloc (strlen (clean) + sizeof "__load_start_");
5482 sprintf (buf, "__load_start_%s", clean);
5483 lang_add_assignment (exp_assop ('=', buf,
5484 exp_nameop (LOADADDR, name)));
5486 buf = xmalloc (strlen (clean) + sizeof "__load_stop_");
5487 sprintf (buf, "__load_stop_%s", clean);
5488 lang_add_assignment (exp_assop ('=', buf,
5490 exp_nameop (LOADADDR, name),
5491 exp_nameop (SIZEOF, name))));
5496 /* Finish an overlay. If there are any overlay wide settings, this
5497 looks through all the sections in the overlay and sets them. */
5500 lang_leave_overlay (etree_type *lma_expr,
5503 const char *memspec,
5504 lang_output_section_phdr_list *phdrs,
5505 const char *lma_memspec)
5507 lang_memory_region_type *region;
5508 lang_memory_region_type *lma_region;
5509 struct overlay_list *l;
5510 lang_nocrossref_type *nocrossref;
5512 lang_get_regions (®ion, &lma_region,
5513 memspec, lma_memspec,
5514 lma_expr != NULL, FALSE);
5518 /* After setting the size of the last section, set '.' to end of the
5520 if (overlay_list != NULL)
5521 overlay_list->os->update_dot_tree
5522 = exp_assop ('=', ".", exp_binop ('+', overlay_vma, overlay_max));
5527 struct overlay_list *next;
5529 if (fill != NULL && l->os->fill == NULL)
5532 l->os->region = region;
5533 l->os->lma_region = lma_region;
5535 /* The first section has the load address specified in the
5536 OVERLAY statement. The rest are worked out from that.
5537 The base address is not needed (and should be null) if
5538 an LMA region was specified. */
5540 l->os->load_base = lma_expr;
5541 else if (lma_region == 0)
5542 l->os->load_base = exp_binop ('+',
5543 exp_nameop (LOADADDR, l->next->os->name),
5544 exp_nameop (SIZEOF, l->next->os->name));
5546 if (phdrs != NULL && l->os->phdrs == NULL)
5547 l->os->phdrs = phdrs;
5551 lang_nocrossref_type *nc;
5553 nc = xmalloc (sizeof *nc);
5554 nc->name = l->os->name;
5555 nc->next = nocrossref;
5564 if (nocrossref != NULL)
5565 lang_add_nocrossref (nocrossref);
5568 overlay_list = NULL;
5572 /* Version handling. This is only useful for ELF. */
5574 /* This global variable holds the version tree that we build. */
5576 struct bfd_elf_version_tree *lang_elf_version_info;
5578 /* If PREV is NULL, return first version pattern matching particular symbol.
5579 If PREV is non-NULL, return first version pattern matching particular
5580 symbol after PREV (previously returned by lang_vers_match). */
5582 static struct bfd_elf_version_expr *
5583 lang_vers_match (struct bfd_elf_version_expr_head *head,
5584 struct bfd_elf_version_expr *prev,
5587 const char *cxx_sym = sym;
5588 const char *java_sym = sym;
5589 struct bfd_elf_version_expr *expr = NULL;
5591 if (head->mask & BFD_ELF_VERSION_CXX_TYPE)
5593 cxx_sym = cplus_demangle (sym, DMGL_PARAMS | DMGL_ANSI);
5597 if (head->mask & BFD_ELF_VERSION_JAVA_TYPE)
5599 java_sym = cplus_demangle (sym, DMGL_JAVA);
5604 if (head->htab && (prev == NULL || prev->symbol))
5606 struct bfd_elf_version_expr e;
5608 switch (prev ? prev->mask : 0)
5611 if (head->mask & BFD_ELF_VERSION_C_TYPE)
5614 expr = htab_find (head->htab, &e);
5615 while (expr && strcmp (expr->symbol, sym) == 0)
5616 if (expr->mask == BFD_ELF_VERSION_C_TYPE)
5622 case BFD_ELF_VERSION_C_TYPE:
5623 if (head->mask & BFD_ELF_VERSION_CXX_TYPE)
5626 expr = htab_find (head->htab, &e);
5627 while (expr && strcmp (expr->symbol, cxx_sym) == 0)
5628 if (expr->mask == BFD_ELF_VERSION_CXX_TYPE)
5634 case BFD_ELF_VERSION_CXX_TYPE:
5635 if (head->mask & BFD_ELF_VERSION_JAVA_TYPE)
5637 e.symbol = java_sym;
5638 expr = htab_find (head->htab, &e);
5639 while (expr && strcmp (expr->symbol, java_sym) == 0)
5640 if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE)
5651 /* Finally, try the wildcards. */
5652 if (prev == NULL || prev->symbol)
5653 expr = head->remaining;
5660 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
5663 if (expr->mask == BFD_ELF_VERSION_JAVA_TYPE)
5665 else if (expr->mask == BFD_ELF_VERSION_CXX_TYPE)
5669 if (fnmatch (expr->pattern, s, 0) == 0)
5676 free ((char *) cxx_sym);
5677 if (java_sym != sym)
5678 free ((char *) java_sym);
5682 /* Return NULL if the PATTERN argument is a glob pattern, otherwise,
5683 return a string pointing to the symbol name. */
5686 realsymbol (const char *pattern)
5689 bfd_boolean changed = FALSE, backslash = FALSE;
5690 char *s, *symbol = xmalloc (strlen (pattern) + 1);
5692 for (p = pattern, s = symbol; *p != '\0'; ++p)
5694 /* It is a glob pattern only if there is no preceding
5696 if (! backslash && (*p == '?' || *p == '*' || *p == '['))
5704 /* Remove the preceding backslash. */
5711 backslash = *p == '\\';
5726 /* This is called for each variable name or match expression. */
5728 struct bfd_elf_version_expr *
5729 lang_new_vers_pattern (struct bfd_elf_version_expr *orig,
5733 struct bfd_elf_version_expr *ret;
5735 ret = xmalloc (sizeof *ret);
5740 ret->symbol = realsymbol (new);
5742 if (lang == NULL || strcasecmp (lang, "C") == 0)
5743 ret->mask = BFD_ELF_VERSION_C_TYPE;
5744 else if (strcasecmp (lang, "C++") == 0)
5745 ret->mask = BFD_ELF_VERSION_CXX_TYPE;
5746 else if (strcasecmp (lang, "Java") == 0)
5747 ret->mask = BFD_ELF_VERSION_JAVA_TYPE;
5750 einfo (_("%X%P: unknown language `%s' in version information\n"),
5752 ret->mask = BFD_ELF_VERSION_C_TYPE;
5755 return ldemul_new_vers_pattern (ret);
5758 /* This is called for each set of variable names and match
5761 struct bfd_elf_version_tree *
5762 lang_new_vers_node (struct bfd_elf_version_expr *globals,
5763 struct bfd_elf_version_expr *locals)
5765 struct bfd_elf_version_tree *ret;
5767 ret = xcalloc (1, sizeof *ret);
5768 ret->globals.list = globals;
5769 ret->locals.list = locals;
5770 ret->match = lang_vers_match;
5771 ret->name_indx = (unsigned int) -1;
5775 /* This static variable keeps track of version indices. */
5777 static int version_index;
5780 version_expr_head_hash (const void *p)
5782 const struct bfd_elf_version_expr *e = p;
5784 return htab_hash_string (e->symbol);
5788 version_expr_head_eq (const void *p1, const void *p2)
5790 const struct bfd_elf_version_expr *e1 = p1;
5791 const struct bfd_elf_version_expr *e2 = p2;
5793 return strcmp (e1->symbol, e2->symbol) == 0;
5797 lang_finalize_version_expr_head (struct bfd_elf_version_expr_head *head)
5800 struct bfd_elf_version_expr *e, *next;
5801 struct bfd_elf_version_expr **list_loc, **remaining_loc;
5803 for (e = head->list; e; e = e->next)
5807 head->mask |= e->mask;
5812 head->htab = htab_create (count * 2, version_expr_head_hash,
5813 version_expr_head_eq, NULL);
5814 list_loc = &head->list;
5815 remaining_loc = &head->remaining;
5816 for (e = head->list; e; e = next)
5822 remaining_loc = &e->next;
5826 void **loc = htab_find_slot (head->htab, e, INSERT);
5830 struct bfd_elf_version_expr *e1, *last;
5836 if (e1->mask == e->mask)
5844 while (e1 && strcmp (e1->symbol, e->symbol) == 0);
5848 /* This is a duplicate. */
5849 /* FIXME: Memory leak. Sometimes pattern is not
5850 xmalloced alone, but in larger chunk of memory. */
5851 /* free (e->symbol); */
5856 e->next = last->next;
5864 list_loc = &e->next;
5868 *remaining_loc = NULL;
5869 *list_loc = head->remaining;
5872 head->remaining = head->list;
5875 /* This is called when we know the name and dependencies of the
5879 lang_register_vers_node (const char *name,
5880 struct bfd_elf_version_tree *version,
5881 struct bfd_elf_version_deps *deps)
5883 struct bfd_elf_version_tree *t, **pp;
5884 struct bfd_elf_version_expr *e1;
5889 if ((name[0] == '\0' && lang_elf_version_info != NULL)
5890 || (lang_elf_version_info && lang_elf_version_info->name[0] == '\0'))
5892 einfo (_("%X%P: anonymous version tag cannot be combined"
5893 " with other version tags\n"));
5898 /* Make sure this node has a unique name. */
5899 for (t = lang_elf_version_info; t != NULL; t = t->next)
5900 if (strcmp (t->name, name) == 0)
5901 einfo (_("%X%P: duplicate version tag `%s'\n"), name);
5903 lang_finalize_version_expr_head (&version->globals);
5904 lang_finalize_version_expr_head (&version->locals);
5906 /* Check the global and local match names, and make sure there
5907 aren't any duplicates. */
5909 for (e1 = version->globals.list; e1 != NULL; e1 = e1->next)
5911 for (t = lang_elf_version_info; t != NULL; t = t->next)
5913 struct bfd_elf_version_expr *e2;
5915 if (t->locals.htab && e1->symbol)
5917 e2 = htab_find (t->locals.htab, e1);
5918 while (e2 && strcmp (e1->symbol, e2->symbol) == 0)
5920 if (e1->mask == e2->mask)
5921 einfo (_("%X%P: duplicate expression `%s'"
5922 " in version information\n"), e1->symbol);
5926 else if (!e1->symbol)
5927 for (e2 = t->locals.remaining; e2 != NULL; e2 = e2->next)
5928 if (strcmp (e1->pattern, e2->pattern) == 0
5929 && e1->mask == e2->mask)
5930 einfo (_("%X%P: duplicate expression `%s'"
5931 " in version information\n"), e1->pattern);
5935 for (e1 = version->locals.list; e1 != NULL; e1 = e1->next)
5937 for (t = lang_elf_version_info; t != NULL; t = t->next)
5939 struct bfd_elf_version_expr *e2;
5941 if (t->globals.htab && e1->symbol)
5943 e2 = htab_find (t->globals.htab, e1);
5944 while (e2 && strcmp (e1->symbol, e2->symbol) == 0)
5946 if (e1->mask == e2->mask)
5947 einfo (_("%X%P: duplicate expression `%s'"
5948 " in version information\n"),
5953 else if (!e1->symbol)
5954 for (e2 = t->globals.remaining; e2 != NULL; e2 = e2->next)
5955 if (strcmp (e1->pattern, e2->pattern) == 0
5956 && e1->mask == e2->mask)
5957 einfo (_("%X%P: duplicate expression `%s'"
5958 " in version information\n"), e1->pattern);
5962 version->deps = deps;
5963 version->name = name;
5964 if (name[0] != '\0')
5967 version->vernum = version_index;
5970 version->vernum = 0;
5972 for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next)
5977 /* This is called when we see a version dependency. */
5979 struct bfd_elf_version_deps *
5980 lang_add_vers_depend (struct bfd_elf_version_deps *list, const char *name)
5982 struct bfd_elf_version_deps *ret;
5983 struct bfd_elf_version_tree *t;
5985 ret = xmalloc (sizeof *ret);
5988 for (t = lang_elf_version_info; t != NULL; t = t->next)
5990 if (strcmp (t->name, name) == 0)
5992 ret->version_needed = t;
5997 einfo (_("%X%P: unable to find version dependency `%s'\n"), name);
6003 lang_do_version_exports_section (void)
6005 struct bfd_elf_version_expr *greg = NULL, *lreg;
6007 LANG_FOR_EACH_INPUT_STATEMENT (is)
6009 asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports");
6017 contents = xmalloc (len);
6018 if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len))
6019 einfo (_("%X%P: unable to read .exports section contents\n"), sec);
6022 while (p < contents + len)
6024 greg = lang_new_vers_pattern (greg, p, NULL);
6025 p = strchr (p, '\0') + 1;
6028 /* Do not free the contents, as we used them creating the regex. */
6030 /* Do not include this section in the link. */
6031 sec->flags |= SEC_EXCLUDE;
6034 lreg = lang_new_vers_pattern (NULL, "*", NULL);
6035 lang_register_vers_node (command_line.version_exports_section,
6036 lang_new_vers_node (greg, lreg), NULL);
6040 lang_add_unique (const char *name)
6042 struct unique_sections *ent;
6044 for (ent = unique_section_list; ent; ent = ent->next)
6045 if (strcmp (ent->name, name) == 0)
6048 ent = xmalloc (sizeof *ent);
6049 ent->name = xstrdup (name);
6050 ent->next = unique_section_list;
6051 unique_section_list = ent;