1 /* Linker command language support.
2 Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000
3 Free Software Foundation, Inc.
5 This file is part of GLD, the Gnu Linker.
7 GLD is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GLD is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GLD; see the file COPYING. If not, write to the Free
19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 #include "libiberty.h"
44 static lang_statement_union_type *new_statement PARAMS ((enum statement_enum,
46 lang_statement_list_type*));
50 static struct obstack stat_obstack;
52 #define obstack_chunk_alloc xmalloc
53 #define obstack_chunk_free free
54 static CONST char *startup_file;
55 static lang_statement_list_type input_file_chain;
56 static boolean placed_commons = false;
57 static lang_output_section_statement_type *default_common_section;
58 static boolean map_option_f;
59 static bfd_vma print_dot;
60 static lang_input_statement_type *first_file;
61 static lang_statement_list_type lang_output_section_statement;
62 static CONST char *current_target;
63 static CONST char *output_target;
64 static lang_statement_list_type statement_list;
65 static struct lang_phdr *lang_phdr_list;
67 static void lang_for_each_statement_worker
68 PARAMS ((void (*func) (lang_statement_union_type *),
69 lang_statement_union_type *s));
70 static lang_input_statement_type *new_afile
71 PARAMS ((const char *name, lang_input_file_enum_type file_type,
72 const char *target, boolean add_to_list));
73 static void init_os PARAMS ((lang_output_section_statement_type *s));
74 static void exp_init_os PARAMS ((etree_type *));
75 static void section_already_linked PARAMS ((bfd *, asection *, PTR));
76 static struct bfd_hash_entry *already_linked_newfunc
77 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
79 static void already_linked_table_init PARAMS ((void));
80 static void already_linked_table_free PARAMS ((void));
81 static boolean wildcardp PARAMS ((const char *));
82 static lang_statement_union_type *wild_sort
83 PARAMS ((lang_wild_statement_type *, lang_input_statement_type *,
85 static lang_input_statement_type *lookup_name PARAMS ((const char *name));
86 static void load_symbols PARAMS ((lang_input_statement_type *entry,
87 lang_statement_list_type *));
88 static void wild PARAMS ((lang_wild_statement_type *s,
89 const char *section, const char *file,
91 lang_output_section_statement_type *output));
92 static bfd *open_output PARAMS ((const char *name));
93 static void ldlang_open_output PARAMS ((lang_statement_union_type *statement));
94 static void open_input_bfds
95 PARAMS ((lang_statement_union_type *statement, boolean));
96 static void lang_reasonable_defaults PARAMS ((void));
97 static void lang_place_undefineds PARAMS ((void));
98 static void map_input_to_output_sections
99 PARAMS ((lang_statement_union_type *s,
101 lang_output_section_statement_type *output_section_statement));
102 static void print_output_section_statement
103 PARAMS ((lang_output_section_statement_type *output_section_statement));
104 static void print_assignment
105 PARAMS ((lang_assignment_statement_type *assignment,
106 lang_output_section_statement_type *output_section));
107 static void print_input_statement PARAMS ((lang_input_statement_type *statm));
108 static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR));
109 static void print_input_section PARAMS ((lang_input_section_type *in));
110 static void print_fill_statement PARAMS ((lang_fill_statement_type *fill));
111 static void print_data_statement PARAMS ((lang_data_statement_type *data));
112 static void print_address_statement PARAMS ((lang_address_statement_type *));
113 static void print_reloc_statement PARAMS ((lang_reloc_statement_type *reloc));
114 static void print_padding_statement PARAMS ((lang_padding_statement_type *s));
115 static void print_wild_statement
116 PARAMS ((lang_wild_statement_type *w,
117 lang_output_section_statement_type *os));
118 static void print_group
119 PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *));
120 static void print_statement PARAMS ((lang_statement_union_type *s,
121 lang_output_section_statement_type *os));
122 static void print_statement_list PARAMS ((lang_statement_union_type *s,
123 lang_output_section_statement_type *os));
124 static void print_statements PARAMS ((void));
125 static bfd_vma insert_pad PARAMS ((lang_statement_union_type **this_ptr,
126 fill_type fill, unsigned int power,
127 asection *output_section_statement,
129 static bfd_vma size_input_section
130 PARAMS ((lang_statement_union_type **this_ptr,
131 lang_output_section_statement_type *output_section_statement,
132 fill_type fill, bfd_vma dot, boolean relax));
133 static void lang_finish PARAMS ((void));
134 static void ignore_bfd_errors PARAMS ((const char *, ...));
135 static void lang_check PARAMS ((void));
136 static void lang_common PARAMS ((void));
137 static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
138 static void lang_place_orphans PARAMS ((void));
139 static int topower PARAMS ((int));
140 static void lang_set_startof PARAMS ((void));
141 static void reset_memory_regions PARAMS ((void));
142 static void lang_record_phdrs PARAMS ((void));
143 static void lang_gc_wild
144 PARAMS ((lang_wild_statement_type *, const char *, const char *));
145 static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *));
146 static void lang_gc_sections PARAMS ((void));
147 static void lang_do_version_exports_section PARAMS ((void));
148 static void lang_check_section_addresses PARAMS ((void));
150 typedef void (*callback_t) PARAMS ((lang_wild_statement_type *,
151 asection *, lang_input_statement_type *,
153 static void walk_wild_section
154 PARAMS ((lang_wild_statement_type *, const char *,
155 lang_input_statement_type *, callback_t, void *));
156 static void walk_wild_file
157 PARAMS ((lang_wild_statement_type *, const char *,
158 lang_input_statement_type *, callback_t, void *));
160 static int get_target PARAMS ((const bfd_target *, void *));
161 static void stricpy PARAMS ((char *, char *));
162 static void strcut PARAMS ((char *, char *));
163 static int name_compare PARAMS ((char *, char *));
164 static int closest_target_match PARAMS ((const bfd_target *, void *));
165 static char * get_first_input_target PARAMS ((void));
168 lang_output_section_statement_type *abs_output_section;
169 lang_statement_list_type *stat_ptr = &statement_list;
170 lang_statement_list_type file_chain = { NULL, NULL };
171 const char *entry_symbol = NULL;
172 boolean entry_from_cmdline;
173 boolean lang_has_input_file = false;
174 boolean had_output_filename = false;
175 boolean lang_float_flag = false;
176 boolean delete_output_file_on_failure = false;
177 struct lang_nocrossrefs *nocrossref_list;
179 etree_type *base; /* Relocation base - or null */
182 #if defined(__STDC__) || defined(ALMOST_STDC)
183 #define cat(a,b) a##b
185 #define cat(a,b) a/**/b
188 #define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y)
190 #define outside_section_address(q) ( (q)->output_offset + (q)->output_section->vma)
192 #define outside_symbol_address(q) ((q)->value + outside_section_address(q->section))
194 #define SECTION_NAME_MAP_LENGTH (16)
200 return obstack_alloc (&stat_obstack, size);
203 /*----------------------------------------------------------------------
204 Generic traversal routines for finding matching sections.
208 walk_wild_section (ptr, section, file, callback, data)
209 lang_wild_statement_type *ptr;
211 lang_input_statement_type *file;
215 /* Don't process sections from files which were excluded. */
216 if (ptr->exclude_filename_list != NULL)
218 struct name_list *list_tmp;
219 for (list_tmp = ptr->exclude_filename_list; list_tmp; list_tmp = list_tmp->next)
223 if (wildcardp (list_tmp->name))
224 match = fnmatch (list_tmp->name, file->filename, 0) == 0 ? true : false;
226 match = strcmp (list_tmp->name, file->filename) == 0 ? true : false;
233 if (file->just_syms_flag == false)
235 register asection *s;
241 wildcard = wildcardp (section);
243 for (s = file->the_bfd->sections; s != NULL; s = s->next)
253 name = bfd_get_section_name (file->the_bfd, s);
255 match = fnmatch (section, name, 0) == 0 ? true : false;
257 match = strcmp (section, name) == 0 ? true : false;
261 (*callback) (ptr, s, file, data);
266 /* Handle a wild statement for a single file F. */
269 walk_wild_file (s, section, f, callback, data)
270 lang_wild_statement_type *s;
272 lang_input_statement_type *f;
276 if (f->the_bfd == NULL
277 || ! bfd_check_format (f->the_bfd, bfd_archive))
278 walk_wild_section (s, section, f, callback, data);
283 /* This is an archive file. We must map each member of the
284 archive separately. */
285 member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
286 while (member != NULL)
288 /* When lookup_name is called, it will call the add_symbols
289 entry point for the archive. For each element of the
290 archive which is included, BFD will call ldlang_add_file,
291 which will set the usrdata field of the member to the
292 lang_input_statement. */
293 if (member->usrdata != NULL)
295 walk_wild_section (s, section,
296 (lang_input_statement_type *) member->usrdata,
300 member = bfd_openr_next_archived_file (f->the_bfd, member);
306 walk_wild (s, section, file, callback, data)
307 lang_wild_statement_type *s;
313 if (file == (char *) NULL)
315 /* Perform the iteration over all files in the list. */
316 LANG_FOR_EACH_INPUT_STATEMENT (f)
318 walk_wild_file (s, section, f, callback, data);
321 else if (wildcardp (file))
323 LANG_FOR_EACH_INPUT_STATEMENT (f)
325 if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
326 walk_wild_file (s, section, f, callback, data);
331 lang_input_statement_type *f;
333 /* Perform the iteration over a single file. */
334 f = lookup_name (file);
335 walk_wild_file (s, section, f, callback, data);
339 /*----------------------------------------------------------------------
340 lang_for_each_statement walks the parse tree and calls the provided
341 function for each node
345 lang_for_each_statement_worker (func, s)
346 void (*func) PARAMS ((lang_statement_union_type *));
347 lang_statement_union_type *s;
349 for (; s != (lang_statement_union_type *) NULL; s = s->next)
353 switch (s->header.type)
355 case lang_constructors_statement_enum:
356 lang_for_each_statement_worker (func, constructor_list.head);
358 case lang_output_section_statement_enum:
359 lang_for_each_statement_worker
361 s->output_section_statement.children.head);
363 case lang_wild_statement_enum:
364 lang_for_each_statement_worker
366 s->wild_statement.children.head);
368 case lang_group_statement_enum:
369 lang_for_each_statement_worker (func,
370 s->group_statement.children.head);
372 case lang_data_statement_enum:
373 case lang_reloc_statement_enum:
374 case lang_object_symbols_statement_enum:
375 case lang_output_statement_enum:
376 case lang_target_statement_enum:
377 case lang_input_section_enum:
378 case lang_input_statement_enum:
379 case lang_assignment_statement_enum:
380 case lang_padding_statement_enum:
381 case lang_address_statement_enum:
382 case lang_fill_statement_enum:
392 lang_for_each_statement (func)
393 void (*func) PARAMS ((lang_statement_union_type *));
395 lang_for_each_statement_worker (func,
396 statement_list.head);
399 /*----------------------------------------------------------------------*/
401 lang_list_init (list)
402 lang_statement_list_type *list;
404 list->head = (lang_statement_union_type *) NULL;
405 list->tail = &list->head;
408 /*----------------------------------------------------------------------
410 build a new statement node for the parse tree
415 lang_statement_union_type *
416 new_statement (type, size, list)
417 enum statement_enum type;
419 lang_statement_list_type * list;
421 lang_statement_union_type *new = (lang_statement_union_type *)
424 new->header.type = type;
425 new->header.next = (lang_statement_union_type *) NULL;
426 lang_statement_append (list, new, &new->header.next);
431 Build a new input file node for the language. There are several ways
432 in which we treat an input file, eg, we only look at symbols, or
433 prefix it with a -l etc.
435 We can be supplied with requests for input files more than once;
436 they may, for example be split over serveral lines like foo.o(.text)
437 foo.o(.data) etc, so when asked for a file we check that we havn't
438 got it already so we don't duplicate the bfd.
441 static lang_input_statement_type *
442 new_afile (name, file_type, target, add_to_list)
444 lang_input_file_enum_type file_type;
448 lang_input_statement_type *p;
451 p = new_stat (lang_input_statement, stat_ptr);
454 p = ((lang_input_statement_type *)
455 stat_alloc (sizeof (lang_input_statement_type)));
456 p->header.next = NULL;
459 lang_has_input_file = true;
463 case lang_input_file_is_symbols_only_enum:
465 p->is_archive = false;
467 p->local_sym_name = name;
468 p->just_syms_flag = true;
469 p->search_dirs_flag = false;
471 case lang_input_file_is_fake_enum:
473 p->is_archive = false;
475 p->local_sym_name = name;
476 p->just_syms_flag = false;
477 p->search_dirs_flag = false;
479 case lang_input_file_is_l_enum:
480 p->is_archive = true;
483 p->local_sym_name = concat ("-l", name, (const char *) NULL);
484 p->just_syms_flag = false;
485 p->search_dirs_flag = true;
487 case lang_input_file_is_marker_enum:
489 p->is_archive = false;
491 p->local_sym_name = name;
492 p->just_syms_flag = false;
493 p->search_dirs_flag = true;
495 case lang_input_file_is_search_file_enum:
497 p->is_archive = false;
499 p->local_sym_name = name;
500 p->just_syms_flag = false;
501 p->search_dirs_flag = true;
503 case lang_input_file_is_file_enum:
505 p->is_archive = false;
507 p->local_sym_name = name;
508 p->just_syms_flag = false;
509 p->search_dirs_flag = false;
514 p->the_bfd = (bfd *) NULL;
515 p->asymbols = (asymbol **) NULL;
516 p->next_real_file = (lang_statement_union_type *) NULL;
517 p->next = (lang_statement_union_type *) NULL;
519 p->dynamic = config.dynamic_link;
520 p->whole_archive = whole_archive;
522 lang_statement_append (&input_file_chain,
523 (lang_statement_union_type *) p,
528 lang_input_statement_type *
529 lang_add_input_file (name, file_type, target)
531 lang_input_file_enum_type file_type;
534 lang_has_input_file = true;
535 return new_afile (name, file_type, target, true);
538 /* Build enough state so that the parser can build its tree */
542 obstack_begin (&stat_obstack, 1000);
544 stat_ptr = &statement_list;
546 lang_list_init (stat_ptr);
548 lang_list_init (&input_file_chain);
549 lang_list_init (&lang_output_section_statement);
550 lang_list_init (&file_chain);
551 first_file = lang_add_input_file ((char *) NULL,
552 lang_input_file_is_marker_enum,
554 abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
556 abs_output_section->bfd_section = bfd_abs_section_ptr;
560 /*----------------------------------------------------------------------
561 A region is an area of memory declared with the
562 MEMORY { name:org=exp, len=exp ... }
565 We maintain a list of all the regions here
567 If no regions are specified in the script, then the default is used
568 which is created when looked up to be the entire data space
571 static lang_memory_region_type *lang_memory_region_list;
572 static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list;
574 lang_memory_region_type *
575 lang_memory_region_lookup (name)
576 CONST char *CONST name;
578 lang_memory_region_type *p;
580 for (p = lang_memory_region_list;
581 p != (lang_memory_region_type *) NULL;
584 if (strcmp (p->name, name) == 0)
591 /* This code used to always use the first region in the list as the
592 default region. I changed it to instead use a region
593 encompassing all of memory as the default region. This permits
594 NOLOAD sections to work reasonably without requiring a region.
595 People should specify what region they mean, if they really want
597 if (strcmp (name, "*default*") == 0)
599 if (lang_memory_region_list != (lang_memory_region_type *) NULL)
601 return lang_memory_region_list;
607 lang_memory_region_type *new =
608 (lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type));
610 new->name = buystring (name);
611 new->next = (lang_memory_region_type *) NULL;
613 *lang_memory_region_list_tail = new;
614 lang_memory_region_list_tail = &new->next;
618 new->length = ~(bfd_size_type)0;
620 new->had_full_message = false;
627 lang_memory_region_type *
628 lang_memory_default (section)
631 lang_memory_region_type *p;
633 flagword sec_flags = section->flags;
635 /* Override SEC_DATA to mean a writable section. */
636 if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC)
637 sec_flags |= SEC_DATA;
639 for (p = lang_memory_region_list;
640 p != (lang_memory_region_type *) NULL;
643 if ((p->flags & sec_flags) != 0
644 && (p->not_flags & sec_flags) == 0)
649 return lang_memory_region_lookup ("*default*");
652 lang_output_section_statement_type *
653 lang_output_section_find (name)
654 CONST char *CONST name;
656 lang_statement_union_type *u;
657 lang_output_section_statement_type *lookup;
659 for (u = lang_output_section_statement.head;
660 u != (lang_statement_union_type *) NULL;
663 lookup = &u->output_section_statement;
664 if (strcmp (name, lookup->name) == 0)
669 return (lang_output_section_statement_type *) NULL;
672 lang_output_section_statement_type *
673 lang_output_section_statement_lookup (name)
674 CONST char *CONST name;
676 lang_output_section_statement_type *lookup;
678 lookup = lang_output_section_find (name);
679 if (lookup == (lang_output_section_statement_type *) NULL)
682 lookup = (lang_output_section_statement_type *)
683 new_stat (lang_output_section_statement, stat_ptr);
684 lookup->region = (lang_memory_region_type *) NULL;
686 lookup->block_value = 1;
689 lookup->next = (lang_statement_union_type *) NULL;
690 lookup->bfd_section = (asection *) NULL;
691 lookup->processed = false;
692 lookup->sectype = normal_section;
693 lookup->addr_tree = (etree_type *) NULL;
694 lang_list_init (&lookup->children);
696 lookup->memspec = (CONST char *) NULL;
698 lookup->subsection_alignment = -1;
699 lookup->section_alignment = -1;
700 lookup->load_base = (union etree_union *) NULL;
701 lookup->phdrs = NULL;
703 lang_statement_append (&lang_output_section_statement,
704 (lang_statement_union_type *) lookup,
711 lang_map_flags (flag)
714 if (flag & SEC_ALLOC)
720 if (flag & SEC_READONLY)
733 lang_memory_region_type *m;
735 minfo (_("\nMemory Configuration\n\n"));
736 fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
737 _("Name"), _("Origin"), _("Length"), _("Attributes"));
739 for (m = lang_memory_region_list;
740 m != (lang_memory_region_type *) NULL;
746 fprintf (config.map_file, "%-16s ", m->name);
748 sprintf_vma (buf, m->origin);
749 minfo ("0x%s ", buf);
757 minfo ("0x%V", m->length);
758 if (m->flags || m->not_flags)
766 lang_map_flags (m->flags);
772 lang_map_flags (m->not_flags);
779 fprintf (config.map_file, _("\nLinker script and memory map\n\n"));
784 /* Initialize an output section. */
788 lang_output_section_statement_type *s;
790 section_userdata_type *new;
792 if (s->bfd_section != NULL)
795 if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
796 einfo (_("%P%F: Illegal use of `%s' section"), DISCARD_SECTION_NAME);
798 new = ((section_userdata_type *)
799 stat_alloc (sizeof (section_userdata_type)));
801 s->bfd_section = bfd_get_section_by_name (output_bfd, s->name);
802 if (s->bfd_section == (asection *) NULL)
803 s->bfd_section = bfd_make_section (output_bfd, s->name);
804 if (s->bfd_section == (asection *) NULL)
806 einfo (_("%P%F: output format %s cannot represent section called %s\n"),
807 output_bfd->xvec->name, s->name);
809 s->bfd_section->output_section = s->bfd_section;
811 /* We initialize an output sections output offset to minus its own */
812 /* vma to allow us to output a section through itself */
813 s->bfd_section->output_offset = 0;
814 get_userdata (s->bfd_section) = (PTR) new;
816 /* If there is a base address, make sure that any sections it might
817 mention are initialized. */
818 if (s->addr_tree != NULL)
819 exp_init_os (s->addr_tree);
822 /* Make sure that all output sections mentioned in an expression are
829 switch (exp->type.node_class)
832 exp_init_os (exp->assign.src);
836 exp_init_os (exp->binary.lhs);
837 exp_init_os (exp->binary.rhs);
841 exp_init_os (exp->trinary.cond);
842 exp_init_os (exp->trinary.lhs);
843 exp_init_os (exp->trinary.rhs);
847 exp_init_os (exp->unary.child);
851 switch (exp->type.node_code)
857 lang_output_section_statement_type *os;
859 os = lang_output_section_find (exp->name.name);
860 if (os != NULL && os->bfd_section == NULL)
871 /* Sections marked with the SEC_LINK_ONCE flag should only be linked
872 once into the output. This routine checks each section, and
873 arrange to discard it if a section of the same name has already
874 been linked. If the section has COMDAT information, then it uses
875 that to decide whether the section should be included. This code
876 assumes that all relevant sections have the SEC_LINK_ONCE flag set;
877 that is, it does not depend solely upon the section name.
878 section_already_linked is called via bfd_map_over_sections. */
880 /* This is the shape of the elements inside the already_linked hash
881 table. It maps a name onto a list of already_linked elements with
882 the same name. It's possible to get more than one element in a
883 list if the COMDAT sections have different names. */
885 struct already_linked_hash_entry
887 struct bfd_hash_entry root;
888 struct already_linked *entry;
891 struct already_linked
893 struct already_linked *next;
897 /* The hash table. */
899 static struct bfd_hash_table already_linked_table;
903 section_already_linked (abfd, sec, data)
908 lang_input_statement_type *entry = (lang_input_statement_type *) data;
911 struct already_linked *l;
912 struct already_linked_hash_entry *already_linked_list;
914 /* If we are only reading symbols from this object, then we want to
915 discard all sections. */
916 if (entry->just_syms_flag)
918 sec->output_section = bfd_abs_section_ptr;
919 sec->output_offset = sec->vma;
923 flags = bfd_get_section_flags (abfd, sec);
925 if ((flags & SEC_LINK_ONCE) == 0)
928 /* FIXME: When doing a relocateable link, we may have trouble
929 copying relocations in other sections that refer to local symbols
930 in the section being discarded. Those relocations will have to
931 be converted somehow; as of this writing I'm not sure that any of
932 the backends handle that correctly.
934 It is tempting to instead not discard link once sections when
935 doing a relocateable link (technically, they should be discarded
936 whenever we are building constructors). However, that fails,
937 because the linker winds up combining all the link once sections
938 into a single large link once section, which defeats the purpose
939 of having link once sections in the first place.
941 Also, not merging link once sections in a relocateable link
942 causes trouble for MIPS ELF, which relies in link once semantics
943 to handle the .reginfo section correctly. */
945 name = bfd_get_section_name (abfd, sec);
947 already_linked_list =
948 ((struct already_linked_hash_entry *)
949 bfd_hash_lookup (&already_linked_table, name, true, false));
951 for (l = already_linked_list->entry; l != NULL; l = l->next)
953 if (sec->comdat == NULL
954 || l->sec->comdat == NULL
955 || strcmp (sec->comdat->name, l->sec->comdat->name) == 0)
957 /* The section has already been linked. See if we should
959 switch (flags & SEC_LINK_DUPLICATES)
964 case SEC_LINK_DUPLICATES_DISCARD:
967 case SEC_LINK_DUPLICATES_ONE_ONLY:
968 if (sec->comdat == NULL)
969 einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"),
972 einfo (_("%P: %B: warning: ignoring duplicate `%s' section symbol `%s'\n"),
973 abfd, name, sec->comdat->name);
976 case SEC_LINK_DUPLICATES_SAME_CONTENTS:
977 /* FIXME: We should really dig out the contents of both
978 sections and memcmp them. The COFF/PE spec says that
979 the Microsoft linker does not implement this
980 correctly, so I'm not going to bother doing it
983 case SEC_LINK_DUPLICATES_SAME_SIZE:
984 if (bfd_section_size (abfd, sec)
985 != bfd_section_size (l->sec->owner, l->sec))
986 einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"),
991 /* Set the output_section field so that wild_doit does not
992 create a lang_input_section structure for this section.
993 Since there might be a symbol in the section being
994 discarded, we must retain a pointer to the section which
995 we are really going to use. */
996 sec->output_section = bfd_abs_section_ptr;
997 if (sec->comdat != NULL)
998 sec->comdat->sec = l->sec;
1004 /* This is the first section with this name. Record it. Allocate
1005 the memory from the same obstack as the hash table is kept in. */
1007 l = ((struct already_linked *)
1008 bfd_hash_allocate (&already_linked_table, sizeof *l));
1011 l->next = already_linked_list->entry;
1012 already_linked_list->entry = l;
1015 /* Support routines for the hash table used by section_already_linked,
1016 initialize the table, fill in an entry and remove the table. */
1018 static struct bfd_hash_entry *
1019 already_linked_newfunc (entry, table, string)
1020 struct bfd_hash_entry *entry ATTRIBUTE_UNUSED;
1021 struct bfd_hash_table *table;
1022 const char *string ATTRIBUTE_UNUSED;
1024 struct already_linked_hash_entry *ret =
1025 bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry));
1029 return (struct bfd_hash_entry *) ret;
1033 already_linked_table_init ()
1035 if (! bfd_hash_table_init_n (&already_linked_table,
1036 already_linked_newfunc,
1038 einfo (_("%P%F: Failed to create hash table\n"));
1042 already_linked_table_free ()
1044 bfd_hash_table_free (&already_linked_table);
1047 /* The wild routines.
1049 These expand statements like *(.text) and foo.o to a list of
1050 explicit actions, like foo.o(.text), bar.o(.text) and
1051 foo.o(.text, .data). */
1053 /* Return true if the PATTERN argument is a wildcard pattern.
1054 Although backslashes are treated specially if a pattern contains
1055 wildcards, we do not consider the mere presence of a backslash to
1056 be enough to cause the the pattern to be treated as a wildcard.
1057 That lets us handle DOS filenames more naturally. */
1061 const char *pattern;
1065 for (s = pattern; *s != '\0'; ++s)
1073 /* Add SECTION to the output section OUTPUT. Do this by creating a
1074 lang_input_section statement which is placed at PTR. FILE is the
1075 input file which holds SECTION. */
1078 wild_doit (ptr, section, output, file)
1079 lang_statement_list_type *ptr;
1081 lang_output_section_statement_type *output;
1082 lang_input_statement_type *file;
1087 flags = bfd_get_section_flags (section->owner, section);
1091 /* If we are doing a final link, discard sections marked with
1093 if (! link_info.relocateable
1094 && (flags & SEC_EXCLUDE) != 0)
1097 /* Discard input sections which are assigned to a section named
1098 DISCARD_SECTION_NAME. */
1099 if (strcmp (output->name, DISCARD_SECTION_NAME) == 0)
1102 /* Discard debugging sections if we are stripping debugging
1104 if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
1105 && (flags & SEC_DEBUGGING) != 0)
1110 if (section->output_section == NULL)
1112 /* This prevents future calls from assigning this section. */
1113 section->output_section = bfd_abs_section_ptr;
1118 if (section->output_section == NULL)
1121 lang_input_section_type *new;
1124 if (output->bfd_section == NULL)
1132 /* Add a section reference to the list */
1133 new = new_stat (lang_input_section, ptr);
1135 new->section = section;
1137 section->output_section = output->bfd_section;
1139 flags = section->flags;
1141 /* We don't copy the SEC_NEVER_LOAD flag from an input section
1142 to an output section, because we want to be able to include a
1143 SEC_NEVER_LOAD section in the middle of an otherwise loaded
1144 section (I don't know why we want to do this, but we do).
1145 build_link_order in ldwrite.c handles this case by turning
1146 the embedded SEC_NEVER_LOAD section into a fill. */
1148 flags &= ~ SEC_NEVER_LOAD;
1150 /* If final link, don't copy the SEC_LINK_ONCE flags, they've
1151 already been processed. One reason to do this is that on pe
1152 format targets, .text$foo sections go into .text and it's odd
1153 to see .text with SEC_LINK_ONCE set. */
1155 if (! link_info.relocateable)
1156 flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
1158 /* If this is not the first input section, and the SEC_READONLY
1159 flag is not currently set, then don't set it just because the
1160 input section has it set. */
1162 if (! first && (section->output_section->flags & SEC_READONLY) == 0)
1163 flags &= ~ SEC_READONLY;
1165 section->output_section->flags |= flags;
1167 /* If SEC_READONLY is not set in the input section, then clear
1168 it from the output section. */
1169 if ((section->flags & SEC_READONLY) == 0)
1170 section->output_section->flags &= ~SEC_READONLY;
1172 switch (output->sectype)
1174 case normal_section:
1179 case overlay_section:
1180 output->bfd_section->flags &= ~SEC_ALLOC;
1182 case noload_section:
1183 output->bfd_section->flags &= ~SEC_LOAD;
1184 output->bfd_section->flags |= SEC_NEVER_LOAD;
1188 /* Copy over SEC_SMALL_DATA. */
1189 if (section->flags & SEC_SMALL_DATA)
1190 section->output_section->flags |= SEC_SMALL_DATA;
1192 if (section->alignment_power > output->bfd_section->alignment_power)
1193 output->bfd_section->alignment_power = section->alignment_power;
1195 /* If supplied an aligment, then force it. */
1196 if (output->section_alignment != -1)
1197 output->bfd_section->alignment_power = output->section_alignment;
1201 /* Handle wildcard sorting. This returns the lang_input_section which
1202 should follow the one we are going to create for SECTION and FILE,
1203 based on the sorting requirements of WILD. It returns NULL if the
1204 new section should just go at the end of the current list. */
1206 static lang_statement_union_type *
1207 wild_sort (wild, file, section)
1208 lang_wild_statement_type *wild;
1209 lang_input_statement_type *file;
1212 const char *section_name;
1213 lang_statement_union_type *l;
1215 if (! wild->filenames_sorted && ! wild->sections_sorted)
1218 section_name = bfd_get_section_name (file->the_bfd, section);
1219 for (l = wild->children.head; l != NULL; l = l->next)
1221 lang_input_section_type *ls;
1223 if (l->header.type != lang_input_section_enum)
1225 ls = &l->input_section;
1227 /* Sorting by filename takes precedence over sorting by section
1230 if (wild->filenames_sorted)
1232 const char *fn, *ln;
1236 /* The PE support for the .idata section as generated by
1237 dlltool assumes that files will be sorted by the name of
1238 the archive and then the name of the file within the
1241 if (file->the_bfd != NULL
1242 && bfd_my_archive (file->the_bfd) != NULL)
1244 fn = bfd_get_filename (bfd_my_archive (file->the_bfd));
1249 fn = file->filename;
1253 if (ls->ifile->the_bfd != NULL
1254 && bfd_my_archive (ls->ifile->the_bfd) != NULL)
1256 ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd));
1261 ln = ls->ifile->filename;
1265 i = strcmp (fn, ln);
1274 fn = file->filename;
1276 ln = ls->ifile->filename;
1278 i = strcmp (fn, ln);
1286 /* Here either the files are not sorted by name, or we are
1287 looking at the sections for this file. */
1289 if (wild->sections_sorted)
1291 if (strcmp (section_name,
1292 bfd_get_section_name (ls->ifile->the_bfd,
1302 /* Expand a wild statement for a particular FILE. SECTION may be
1303 NULL, in which case it is a wild card. */
1306 output_section_callback (ptr, section, file, output)
1307 lang_wild_statement_type *ptr;
1309 lang_input_statement_type *file;
1312 lang_statement_union_type *before;
1314 /* If the wild pattern was marked KEEP, the member sections
1315 should be as well. */
1316 if (ptr->keep_sections)
1317 section->flags |= SEC_KEEP;
1319 before = wild_sort (ptr, file, section);
1321 /* Here BEFORE points to the lang_input_section which
1322 should follow the one we are about to add. If BEFORE
1323 is NULL, then the section should just go at the end
1324 of the current list. */
1327 wild_doit (&ptr->children, section,
1328 (lang_output_section_statement_type *) output,
1332 lang_statement_list_type list;
1333 lang_statement_union_type **pp;
1335 lang_list_init (&list);
1336 wild_doit (&list, section,
1337 (lang_output_section_statement_type *) output,
1340 /* If we are discarding the section, LIST.HEAD will
1342 if (list.head != NULL)
1344 ASSERT (list.head->next == NULL);
1346 for (pp = &ptr->children.head;
1349 ASSERT (*pp != NULL);
1351 list.head->next = *pp;
1357 /* This is passed a file name which must have been seen already and
1358 added to the statement tree. We will see if it has been opened
1359 already and had its symbols read. If not then we'll read it. */
1361 static lang_input_statement_type *
1365 lang_input_statement_type *search;
1367 for (search = (lang_input_statement_type *) input_file_chain.head;
1368 search != (lang_input_statement_type *) NULL;
1369 search = (lang_input_statement_type *) search->next_real_file)
1371 if (search->filename == (char *) NULL && name == (char *) NULL)
1373 if (search->filename != (char *) NULL
1374 && name != (char *) NULL
1375 && strcmp (search->filename, name) == 0)
1379 if (search == (lang_input_statement_type *) NULL)
1380 search = new_afile (name, lang_input_file_is_file_enum, default_target,
1383 /* If we have already added this file, or this file is not real
1384 (FIXME: can that ever actually happen?) or the name is NULL
1385 (FIXME: can that ever actually happen?) don't add this file. */
1388 || search->filename == (const char *) NULL)
1391 load_symbols (search, (lang_statement_list_type *) NULL);
1396 /* Get the symbols for an input file. */
1399 load_symbols (entry, place)
1400 lang_input_statement_type *entry;
1401 lang_statement_list_type *place;
1408 ldfile_open_file (entry);
1410 if (! bfd_check_format (entry->the_bfd, bfd_archive)
1411 && ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching))
1414 lang_statement_list_type *hold;
1416 err = bfd_get_error ();
1417 if (err == bfd_error_file_ambiguously_recognized)
1421 einfo (_("%B: file not recognized: %E\n"), entry->the_bfd);
1422 einfo (_("%B: matching formats:"), entry->the_bfd);
1423 for (p = matching; *p != NULL; p++)
1427 else if (err != bfd_error_file_not_recognized
1429 einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd);
1431 bfd_close (entry->the_bfd);
1432 entry->the_bfd = NULL;
1434 /* See if the emulation has some special knowledge. */
1436 if (ldemul_unrecognized_file (entry))
1439 /* Try to interpret the file as a linker script. */
1441 ldfile_open_command_file (entry->filename);
1446 ldfile_assumed_script = true;
1447 parser_input = input_script;
1449 ldfile_assumed_script = false;
1456 if (ldemul_recognized_file (entry))
1459 /* We don't call ldlang_add_file for an archive. Instead, the
1460 add_symbols entry point will call ldlang_add_file, via the
1461 add_archive_element callback, for each element of the archive
1463 switch (bfd_get_format (entry->the_bfd))
1469 ldlang_add_file (entry);
1470 if (trace_files || trace_file_tries)
1471 info_msg ("%I\n", entry);
1475 if (entry->whole_archive)
1477 bfd *member = bfd_openr_next_archived_file (entry->the_bfd,
1479 while (member != NULL)
1481 if (! bfd_check_format (member, bfd_object))
1482 einfo (_("%F%B: object %B in archive is not object\n"),
1483 entry->the_bfd, member);
1484 if (! ((*link_info.callbacks->add_archive_element)
1485 (&link_info, member, "--whole-archive")))
1487 if (! bfd_link_add_symbols (member, &link_info))
1488 einfo (_("%F%B: could not read symbols: %E\n"), member);
1489 member = bfd_openr_next_archived_file (entry->the_bfd,
1493 entry->loaded = true;
1499 if (! bfd_link_add_symbols (entry->the_bfd, &link_info))
1500 einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd);
1502 entry->loaded = true;
1507 /* Handle a wild statement. SECTION or FILE or both may be NULL,
1508 indicating that it is a wildcard. Separate lang_input_section
1509 statements are created for each part of the expansion; they are
1510 added after the wild statement S. OUTPUT is the output section. */
1513 wild (s, section, file, target, output)
1514 lang_wild_statement_type *s;
1515 const char *section;
1517 const char *target ATTRIBUTE_UNUSED;
1518 lang_output_section_statement_type *output;
1520 walk_wild (s, section, file, output_section_callback, (void *) output);
1522 if (section != (char *) NULL
1523 && strcmp (section, "COMMON") == 0
1524 && default_common_section == NULL)
1526 /* Remember the section that common is going to in case we later
1527 get something which doesn't know where to put it. */
1528 default_common_section = output;
1532 /* Return true iff target is the sought target. */
1534 get_target (target, data)
1535 const bfd_target * target;
1538 const char * sought = (const char *) data;
1540 return strcmp (target->name, sought) == 0;
1543 /* Like strcpy() but convert to lower case as well. */
1551 while ((c = * src ++) != 0)
1553 if (isupper ((unsigned char) c))
1562 /* Remove the first occurance of needle (if any) in haystack
1565 strcut (haystack, needle)
1569 haystack = strstr (haystack, needle);
1575 for (src = haystack + strlen (needle); * src;)
1576 * haystack ++ = * src ++;
1582 /* Compare two target format name strings.
1583 Return a value indicating how "similar" they are. */
1585 name_compare (first, second)
1593 copy1 = xmalloc (strlen (first) + 1);
1594 copy2 = xmalloc (strlen (second) + 1);
1596 /* Convert the names to lower case. */
1597 stricpy (copy1, first);
1598 stricpy (copy2, second);
1600 /* Remove and endian strings from the name. */
1601 strcut (copy1, "big");
1602 strcut (copy1, "little");
1603 strcut (copy2, "big");
1604 strcut (copy2, "little");
1606 /* Return a value based on how many characters match,
1607 starting from the beginning. If both strings are
1608 the same then return 10 * their length. */
1609 for (result = 0; copy1 [result] == copy2 [result]; result ++)
1610 if (copy1 [result] == 0)
1622 /* Set by closest_target_match() below. */
1623 static const bfd_target * winner;
1625 /* Scan all the valid bfd targets looking for one that has the endianness
1626 requirement that was specified on the command line, and is the nearest
1627 match to the original output target. */
1629 closest_target_match (target, data)
1630 const bfd_target * target;
1633 const bfd_target * original = (const bfd_target *) data;
1635 if (command_line.endian == ENDIAN_BIG && target->byteorder != BFD_ENDIAN_BIG)
1638 if (command_line.endian == ENDIAN_LITTLE && target->byteorder != BFD_ENDIAN_LITTLE)
1641 /* Must be the same flavour. */
1642 if (target->flavour != original->flavour)
1645 /* If we have not found a potential winner yet, then record this one. */
1652 /* Oh dear, we now have two potential candidates for a successful match.
1653 Compare their names and choose the better one. */
1654 if (name_compare (target->name, original->name) > name_compare (winner->name, original->name))
1657 /* Keep on searching until wqe have checked them all. */
1661 /* Return the BFD target format of the first input file. */
1663 get_first_input_target ()
1665 char * target = NULL;
1667 LANG_FOR_EACH_INPUT_STATEMENT (s)
1669 if (s->header.type == lang_input_statement_enum
1672 ldfile_open_file (s);
1674 if (s->the_bfd != NULL
1675 && bfd_check_format (s->the_bfd, bfd_object))
1677 target = bfd_get_target (s->the_bfd);
1688 /* Open the output file. */
1696 /* Has the user told us which output format to use ? */
1697 if (output_target == (char *) NULL)
1699 /* No - has the current target been set to something other than the default ? */
1700 if (current_target != default_target)
1701 output_target = current_target;
1703 /* No - can we determine the format of the first input file ? */
1706 output_target = get_first_input_target ();
1708 /* Failed - use the default output target. */
1709 if (output_target == NULL)
1710 output_target = default_target;
1714 /* Has the user requested a particular endianness on the command line ? */
1715 if (command_line.endian != ENDIAN_UNSET)
1717 const bfd_target * target;
1718 enum bfd_endian desired_endian;
1720 /* Get the chosen target. */
1721 target = bfd_search_for_target (get_target, (void *) output_target);
1723 if (command_line.endian == ENDIAN_BIG)
1724 desired_endian = BFD_ENDIAN_BIG;
1726 desired_endian = BFD_ENDIAN_LITTLE;
1728 /* See if the target has the wrong endianness. This should not happen
1729 if the linker script has provided big and little endian alternatives,
1730 but some scrips don't do this. */
1731 if (target->byteorder != desired_endian)
1733 /* If it does, then see if the target provides
1734 an alternative with the correct endianness. */
1735 if (target->alternative_target != NULL
1736 && (target->alternative_target->byteorder == desired_endian))
1737 output_target = target->alternative_target->name;
1740 /* Try to find a target as similar as possible to the default
1741 target, but which has the desired endian characteristic. */
1742 (void) bfd_search_for_target (closest_target_match, (void *) target);
1744 /* Oh dear - we could not find any targets that satisfy our requirements. */
1746 einfo (_("%P: warning: could not find any targets that match endianness requirement\n"));
1748 output_target = winner->name;
1753 output = bfd_openw (name, output_target);
1755 if (output == (bfd *) NULL)
1757 if (bfd_get_error () == bfd_error_invalid_target)
1758 einfo (_("%P%F: target %s not found\n"), output_target);
1760 einfo (_("%P%F: cannot open output file %s: %E\n"), name);
1763 delete_output_file_on_failure = true;
1765 /* output->flags |= D_PAGED;*/
1767 if (! bfd_set_format (output, bfd_object))
1768 einfo (_("%P%F:%s: can not make object file: %E\n"), name);
1769 if (! bfd_set_arch_mach (output,
1770 ldfile_output_architecture,
1771 ldfile_output_machine))
1772 einfo (_("%P%F:%s: can not set architecture: %E\n"), name);
1774 link_info.hash = bfd_link_hash_table_create (output);
1775 if (link_info.hash == (struct bfd_link_hash_table *) NULL)
1776 einfo (_("%P%F: can not create link hash table: %E\n"));
1778 bfd_set_gp_size (output, g_switch_value);
1783 ldlang_open_output (statement)
1784 lang_statement_union_type * statement;
1786 switch (statement->header.type)
1788 case lang_output_statement_enum:
1789 ASSERT (output_bfd == (bfd *) NULL);
1790 output_bfd = open_output (statement->output_statement.name);
1791 ldemul_set_output_arch ();
1792 if (config.magic_demand_paged && !link_info.relocateable)
1793 output_bfd->flags |= D_PAGED;
1795 output_bfd->flags &= ~D_PAGED;
1796 if (config.text_read_only)
1797 output_bfd->flags |= WP_TEXT;
1799 output_bfd->flags &= ~WP_TEXT;
1800 if (link_info.traditional_format)
1801 output_bfd->flags |= BFD_TRADITIONAL_FORMAT;
1803 output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT;
1806 case lang_target_statement_enum:
1807 current_target = statement->target_statement.target;
1814 /* Open all the input files. */
1817 open_input_bfds (s, force)
1818 lang_statement_union_type *s;
1821 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1823 switch (s->header.type)
1825 case lang_constructors_statement_enum:
1826 open_input_bfds (constructor_list.head, force);
1828 case lang_output_section_statement_enum:
1829 open_input_bfds (s->output_section_statement.children.head, force);
1831 case lang_wild_statement_enum:
1832 /* Maybe we should load the file's symbols */
1833 if (s->wild_statement.filename
1834 && ! wildcardp (s->wild_statement.filename))
1835 (void) lookup_name (s->wild_statement.filename);
1836 open_input_bfds (s->wild_statement.children.head, force);
1838 case lang_group_statement_enum:
1840 struct bfd_link_hash_entry *undefs;
1842 /* We must continually search the entries in the group
1843 until no new symbols are added to the list of undefined
1848 undefs = link_info.hash->undefs_tail;
1849 open_input_bfds (s->group_statement.children.head, true);
1851 while (undefs != link_info.hash->undefs_tail);
1854 case lang_target_statement_enum:
1855 current_target = s->target_statement.target;
1857 case lang_input_statement_enum:
1858 if (s->input_statement.real)
1860 lang_statement_list_type add;
1862 s->input_statement.target = current_target;
1864 /* If we are being called from within a group, and this
1865 is an archive which has already been searched, then
1866 force it to be researched. */
1868 && s->input_statement.loaded
1869 && bfd_check_format (s->input_statement.the_bfd,
1871 s->input_statement.loaded = false;
1873 lang_list_init (&add);
1875 load_symbols (&s->input_statement, &add);
1877 if (add.head != NULL)
1879 *add.tail = s->next;
1890 /* If there are [COMMONS] statements, put a wild one into the bss section */
1893 lang_reasonable_defaults ()
1896 lang_output_section_statement_lookup (".text");
1897 lang_output_section_statement_lookup (".data");
1899 default_common_section =
1900 lang_output_section_statement_lookup (".bss");
1903 if (placed_commons == false)
1905 lang_wild_statement_type *new =
1906 new_stat (lang_wild_statement,
1907 &default_common_section->children);
1909 new->section_name = "COMMON";
1910 new->filename = (char *) NULL;
1911 lang_list_init (&new->children);
1918 Add the supplied name to the symbol table as an undefined reference.
1919 Remove items from the chain as we open input bfds
1921 typedef struct ldlang_undef_chain_list
1923 struct ldlang_undef_chain_list *next;
1925 } ldlang_undef_chain_list_type;
1927 static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head;
1930 ldlang_add_undef (name)
1931 CONST char *CONST name;
1933 ldlang_undef_chain_list_type *new =
1934 ((ldlang_undef_chain_list_type *)
1935 stat_alloc (sizeof (ldlang_undef_chain_list_type)));
1937 new->next = ldlang_undef_chain_list_head;
1938 ldlang_undef_chain_list_head = new;
1940 new->name = buystring (name);
1943 /* Run through the list of undefineds created above and place them
1944 into the linker hash table as undefined symbols belonging to the
1948 lang_place_undefineds ()
1950 ldlang_undef_chain_list_type *ptr;
1952 for (ptr = ldlang_undef_chain_list_head;
1953 ptr != (ldlang_undef_chain_list_type *) NULL;
1956 struct bfd_link_hash_entry *h;
1958 h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true);
1959 if (h == (struct bfd_link_hash_entry *) NULL)
1960 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
1961 if (h->type == bfd_link_hash_new)
1963 h->type = bfd_link_hash_undefined;
1964 h->u.undef.abfd = NULL;
1965 bfd_link_add_undef (link_info.hash, h);
1970 /* Open input files and attatch to output sections */
1972 map_input_to_output_sections (s, target, output_section_statement)
1973 lang_statement_union_type * s;
1975 lang_output_section_statement_type * output_section_statement;
1977 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1979 switch (s->header.type)
1983 case lang_wild_statement_enum:
1984 wild (&s->wild_statement, s->wild_statement.section_name,
1985 s->wild_statement.filename, target,
1986 output_section_statement);
1989 case lang_constructors_statement_enum:
1990 map_input_to_output_sections (constructor_list.head,
1992 output_section_statement);
1994 case lang_output_section_statement_enum:
1995 map_input_to_output_sections (s->output_section_statement.children.head,
1997 &s->output_section_statement);
1999 case lang_output_statement_enum:
2001 case lang_target_statement_enum:
2002 target = s->target_statement.target;
2004 case lang_group_statement_enum:
2005 map_input_to_output_sections (s->group_statement.children.head,
2007 output_section_statement);
2009 case lang_fill_statement_enum:
2010 case lang_input_section_enum:
2011 case lang_object_symbols_statement_enum:
2012 case lang_data_statement_enum:
2013 case lang_reloc_statement_enum:
2014 case lang_padding_statement_enum:
2015 case lang_input_statement_enum:
2016 if (output_section_statement != NULL
2017 && output_section_statement->bfd_section == NULL)
2018 init_os (output_section_statement);
2020 case lang_assignment_statement_enum:
2021 if (output_section_statement != NULL
2022 && output_section_statement->bfd_section == NULL)
2023 init_os (output_section_statement);
2025 /* Make sure that any sections mentioned in the assignment
2027 exp_init_os (s->assignment_statement.exp);
2029 case lang_afile_asection_pair_statement_enum:
2032 case lang_address_statement_enum:
2033 /* Mark the specified section with the supplied address */
2035 lang_output_section_statement_type *os =
2036 lang_output_section_statement_lookup
2037 (s->address_statement.section_name);
2039 if (os->bfd_section == NULL)
2041 os->addr_tree = s->address_statement.address;
2049 print_output_section_statement (output_section_statement)
2050 lang_output_section_statement_type * output_section_statement;
2052 asection *section = output_section_statement->bfd_section;
2055 if (output_section_statement != abs_output_section)
2057 minfo ("\n%s", output_section_statement->name);
2059 if (section != NULL)
2061 print_dot = section->vma;
2063 len = strlen (output_section_statement->name);
2064 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2069 while (len < SECTION_NAME_MAP_LENGTH)
2075 minfo ("0x%V %W", section->vma, section->_raw_size);
2077 if (output_section_statement->load_base != NULL)
2081 addr = exp_get_abs_int (output_section_statement->load_base, 0,
2082 "load base", lang_final_phase_enum);
2083 minfo (_(" load address 0x%V"), addr);
2090 print_statement_list (output_section_statement->children.head,
2091 output_section_statement);
2095 print_assignment (assignment, output_section)
2096 lang_assignment_statement_type * assignment;
2097 lang_output_section_statement_type * output_section;
2100 etree_value_type result;
2102 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2105 result = exp_fold_tree (assignment->exp->assign.src, output_section,
2106 lang_final_phase_enum, print_dot, &print_dot);
2108 minfo ("0x%V", result.value + result.section->bfd_section->vma);
2119 exp_print_tree (assignment->exp);
2125 print_input_statement (statm)
2126 lang_input_statement_type * statm;
2128 if (statm->filename != (char *) NULL)
2130 fprintf (config.map_file, "LOAD %s\n", statm->filename);
2134 /* Print all symbols defined in a particular section. This is called
2135 via bfd_link_hash_traverse. */
2138 print_one_symbol (hash_entry, ptr)
2139 struct bfd_link_hash_entry *hash_entry;
2142 asection *sec = (asection *) ptr;
2144 if ((hash_entry->type == bfd_link_hash_defined
2145 || hash_entry->type == bfd_link_hash_defweak)
2146 && sec == hash_entry->u.def.section)
2150 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2153 (hash_entry->u.def.value
2154 + hash_entry->u.def.section->output_offset
2155 + hash_entry->u.def.section->output_section->vma));
2157 minfo (" %T\n", hash_entry->root.string);
2163 /* Print information about an input section to the map file. */
2166 print_input_section (in)
2167 lang_input_section_type * in;
2169 asection *i = in->section;
2170 bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size;
2171 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2172 ldfile_output_machine);
2177 minfo ("%s", i->name);
2179 if (i->output_section != NULL)
2183 len = 1 + strlen (i->name);
2184 if (len >= SECTION_NAME_MAP_LENGTH - 1)
2189 while (len < SECTION_NAME_MAP_LENGTH)
2195 minfo ("0x%V %W %B\n",
2196 i->output_section->vma + i->output_offset, size / opb,
2199 if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size)
2201 len = SECTION_NAME_MAP_LENGTH + 3;
2213 minfo (_("%W (size before relaxing)\n"), i->_raw_size);
2216 bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i);
2218 print_dot = i->output_section->vma + i->output_offset + size / opb;
2224 print_fill_statement (fill)
2225 lang_fill_statement_type * fill;
2227 fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill);
2231 print_data_statement (data)
2232 lang_data_statement_type * data;
2238 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2239 ldfile_output_machine);
2241 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2244 addr = data->output_vma;
2245 if (data->output_section != NULL)
2246 addr += data->output_section->vma;
2274 minfo ("0x%V %W %s 0x%v", addr, size, name, data->value);
2276 if (data->exp->type.node_class != etree_value)
2279 exp_print_tree (data->exp);
2284 print_dot = addr + size / opb;
2288 /* Print an address statement. These are generated by options like
2292 print_address_statement (address)
2293 lang_address_statement_type *address;
2295 minfo (_("Address of section %s set to "), address->section_name);
2296 exp_print_tree (address->address);
2300 /* Print a reloc statement. */
2303 print_reloc_statement (reloc)
2304 lang_reloc_statement_type *reloc;
2309 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2310 ldfile_output_machine);
2312 for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
2315 addr = reloc->output_vma;
2316 if (reloc->output_section != NULL)
2317 addr += reloc->output_section->vma;
2319 size = bfd_get_reloc_size (reloc->howto);
2321 minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name);
2323 if (reloc->name != NULL)
2324 minfo ("%s+", reloc->name);
2326 minfo ("%s+", reloc->section->name);
2328 exp_print_tree (reloc->addend_exp);
2332 print_dot = addr + size / opb;
2336 print_padding_statement (s)
2337 lang_padding_statement_type *s;
2341 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2342 ldfile_output_machine);
2346 len = sizeof " *fill*" - 1;
2347 while (len < SECTION_NAME_MAP_LENGTH)
2353 addr = s->output_offset;
2354 if (s->output_section != NULL)
2355 addr += s->output_section->vma;
2356 minfo ("0x%V %W", addr, s->size);
2359 minfo (" %u", s->fill);
2363 print_dot = addr + s->size / opb;
2367 print_wild_statement (w, os)
2368 lang_wild_statement_type * w;
2369 lang_output_section_statement_type * os;
2373 if (w->filenames_sorted)
2375 if (w->exclude_filename_list != NULL)
2378 minfo ("EXCLUDE_FILE ( %s", w->exclude_filename_list->name);
2379 for (tmp=w->exclude_filename_list->next; tmp; tmp = tmp->next)
2380 minfo (", %s", tmp->name);
2383 if (w->filename != NULL)
2384 minfo ("%s", w->filename);
2387 if (w->filenames_sorted)
2391 if (w->sections_sorted)
2393 if (w->section_name != NULL)
2394 minfo ("%s", w->section_name);
2397 if (w->sections_sorted)
2403 print_statement_list (w->children.head, os);
2406 /* Print a group statement. */
2410 lang_group_statement_type *s;
2411 lang_output_section_statement_type *os;
2413 fprintf (config.map_file, "START GROUP\n");
2414 print_statement_list (s->children.head, os);
2415 fprintf (config.map_file, "END GROUP\n");
2418 /* Print the list of statements in S.
2419 This can be called for any statement type. */
2422 print_statement_list (s, os)
2423 lang_statement_union_type *s;
2424 lang_output_section_statement_type *os;
2428 print_statement (s, os);
2433 /* Print the first statement in statement list S.
2434 This can be called for any statement type. */
2437 print_statement (s, os)
2438 lang_statement_union_type *s;
2439 lang_output_section_statement_type *os;
2441 switch (s->header.type)
2444 fprintf (config.map_file, _("Fail with %d\n"), s->header.type);
2447 case lang_constructors_statement_enum:
2448 if (constructor_list.head != NULL)
2450 if (constructors_sorted)
2451 minfo (" SORT (CONSTRUCTORS)\n");
2453 minfo (" CONSTRUCTORS\n");
2454 print_statement_list (constructor_list.head, os);
2457 case lang_wild_statement_enum:
2458 print_wild_statement (&s->wild_statement, os);
2460 case lang_address_statement_enum:
2461 print_address_statement (&s->address_statement);
2463 case lang_object_symbols_statement_enum:
2464 minfo (" CREATE_OBJECT_SYMBOLS\n");
2466 case lang_fill_statement_enum:
2467 print_fill_statement (&s->fill_statement);
2469 case lang_data_statement_enum:
2470 print_data_statement (&s->data_statement);
2472 case lang_reloc_statement_enum:
2473 print_reloc_statement (&s->reloc_statement);
2475 case lang_input_section_enum:
2476 print_input_section (&s->input_section);
2478 case lang_padding_statement_enum:
2479 print_padding_statement (&s->padding_statement);
2481 case lang_output_section_statement_enum:
2482 print_output_section_statement (&s->output_section_statement);
2484 case lang_assignment_statement_enum:
2485 print_assignment (&s->assignment_statement, os);
2487 case lang_target_statement_enum:
2488 fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
2490 case lang_output_statement_enum:
2491 minfo ("OUTPUT(%s", s->output_statement.name);
2492 if (output_target != NULL)
2493 minfo (" %s", output_target);
2496 case lang_input_statement_enum:
2497 print_input_statement (&s->input_statement);
2499 case lang_group_statement_enum:
2500 print_group (&s->group_statement, os);
2502 case lang_afile_asection_pair_statement_enum:
2511 print_statement_list (statement_list.head, abs_output_section);
2514 /* Print the first N statements in statement list S to STDERR.
2515 If N == 0, nothing is printed.
2516 If N < 0, the entire list is printed.
2517 Intended to be called from GDB. */
2520 dprint_statement (s, n)
2521 lang_statement_union_type * s;
2524 FILE *map_save = config.map_file;
2526 config.map_file = stderr;
2529 print_statement_list (s, abs_output_section);
2532 while (s && --n >= 0)
2534 print_statement (s, abs_output_section);
2539 config.map_file = map_save;
2543 insert_pad (this_ptr, fill, power, output_section_statement, dot)
2544 lang_statement_union_type ** this_ptr;
2547 asection * output_section_statement;
2550 /* Align this section first to the
2551 input sections requirement, then
2552 to the output section's requirement.
2553 If this alignment is > than any seen before,
2554 then record it too. Perform the alignment by
2555 inserting a magic 'padding' statement.
2558 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2559 ldfile_output_machine);
2560 unsigned int alignment_needed = align_power (dot, power) - dot;
2562 if (alignment_needed != 0)
2564 lang_statement_union_type *new =
2565 ((lang_statement_union_type *)
2566 stat_alloc (sizeof (lang_padding_statement_type)));
2568 /* Link into existing chain */
2569 new->header.next = *this_ptr;
2571 new->header.type = lang_padding_statement_enum;
2572 new->padding_statement.output_section = output_section_statement;
2573 new->padding_statement.output_offset =
2574 dot - output_section_statement->vma;
2575 new->padding_statement.fill = fill;
2576 new->padding_statement.size = alignment_needed * opb;
2580 /* Remember the most restrictive alignment */
2581 if (power > output_section_statement->alignment_power)
2583 output_section_statement->alignment_power = power;
2585 output_section_statement->_raw_size += alignment_needed * opb;
2587 return dot + alignment_needed;
2590 /* Work out how much this section will move the dot point */
2592 size_input_section (this_ptr, output_section_statement, fill, dot, relax)
2593 lang_statement_union_type ** this_ptr;
2594 lang_output_section_statement_type * output_section_statement;
2597 boolean relax ATTRIBUTE_UNUSED;
2599 lang_input_section_type *is = &((*this_ptr)->input_section);
2600 asection *i = is->section;
2601 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2602 ldfile_output_machine);
2604 if (is->ifile->just_syms_flag == false)
2606 if (output_section_statement->subsection_alignment != -1)
2607 i->alignment_power =
2608 output_section_statement->subsection_alignment;
2610 dot = insert_pad (this_ptr, fill, i->alignment_power,
2611 output_section_statement->bfd_section, dot);
2613 /* Remember where in the output section this input section goes */
2615 i->output_offset = dot - output_section_statement->bfd_section->vma;
2617 /* Mark how big the output section must be to contain this now
2619 if (i->_cooked_size != 0)
2620 dot += i->_cooked_size / opb;
2622 dot += i->_raw_size / opb;
2623 output_section_statement->bfd_section->_raw_size =
2624 (dot - output_section_statement->bfd_section->vma) * opb;
2628 i->output_offset = i->vma - output_section_statement->bfd_section->vma;
2634 #define IGNORE_SECTION(bfd, s) \
2635 (((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_LOAD)) != (SEC_ALLOC | SEC_LOAD)) \
2636 || bfd_section_size (bfd, s) == 0)
2638 /* Check to see if any allocated sections overlap with other allocated
2639 sections. This can happen when the linker script specifically specifies
2640 the output section addresses of the two sections. */
2642 lang_check_section_addresses ()
2645 int opb = bfd_octets_per_byte (output_bfd);
2647 /* Scan all sections in the output list. */
2648 for (s = output_bfd->sections; s != NULL; s = s->next)
2652 /* Ignore sections which are not loaded or which have no contents. */
2653 if (IGNORE_SECTION (output_bfd, s))
2656 /* Once we reach section 's' stop our seach. This prevents two
2657 warning messages from being produced, one for 'section A overlaps
2658 section B' and one for 'section B overlaps section A'. */
2659 for (os = output_bfd->sections; os != s; os = os->next)
2666 /* Only consider loadable sections with real contents. */
2667 if (IGNORE_SECTION (output_bfd, os))
2670 /* We must check the sections' LMA addresses not their
2671 VMA addresses because overlay sections can have
2672 overlapping VMAs but they must have distinct LMAs. */
2673 s_start = bfd_section_lma (output_bfd, s);
2674 os_start = bfd_section_lma (output_bfd, os);
2675 s_end = s_start + bfd_section_size (output_bfd, s) - 1;
2676 os_end = os_start + bfd_section_size (output_bfd, os) - 1;
2678 /* Look for an overlap. */
2679 if ((s_end < os_start) || (s_start > os_end))
2683 _("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
2684 s->name, s_start, s_end, os->name, os_start, os_end);
2686 /* Once we have found one overlap for this section,
2687 stop looking for others. */
2693 /* This variable indicates whether bfd_relax_section should be called
2696 static boolean relax_again;
2698 /* Set the sizes for all the output sections. */
2701 lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
2702 lang_statement_union_type * s;
2703 lang_output_section_statement_type * output_section_statement;
2704 lang_statement_union_type ** prev;
2709 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
2710 ldfile_output_machine);
2712 /* Size up the sections from their constituent parts. */
2713 for (; s != (lang_statement_union_type *) NULL; s = s->next)
2715 switch (s->header.type)
2717 case lang_output_section_statement_enum:
2720 lang_output_section_statement_type *os = &s->output_section_statement;
2722 if (os->bfd_section == NULL)
2723 /* This section was never actually created. */
2726 /* If this is a COFF shared library section, use the size and
2727 address from the input section. FIXME: This is COFF
2728 specific; it would be cleaner if there were some other way
2729 to do this, but nothing simple comes to mind. */
2730 if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
2734 if (os->children.head == NULL
2735 || os->children.head->next != NULL
2736 || os->children.head->header.type != lang_input_section_enum)
2737 einfo (_("%P%X: Internal error on COFF shared library section %s\n"),
2740 input = os->children.head->input_section.section;
2741 bfd_set_section_vma (os->bfd_section->owner,
2743 bfd_section_vma (input->owner, input));
2744 os->bfd_section->_raw_size = input->_raw_size;
2748 if (bfd_is_abs_section (os->bfd_section))
2750 /* No matter what happens, an abs section starts at zero. */
2751 ASSERT (os->bfd_section->vma == 0);
2755 if (os->addr_tree == (etree_type *) NULL)
2757 /* No address specified for this section, get one
2758 from the region specification. */
2759 if (os->region == (lang_memory_region_type *) NULL
2760 || (((bfd_get_section_flags (output_bfd, os->bfd_section)
2761 & (SEC_ALLOC | SEC_LOAD)) != 0)
2762 && os->region->name[0] == '*'
2763 && strcmp (os->region->name, "*default*") == 0))
2765 os->region = lang_memory_default (os->bfd_section);
2768 /* If a loadable section is using the default memory
2769 region, and some non default memory regions were
2770 defined, issue a warning. */
2771 if ((bfd_get_section_flags (output_bfd, os->bfd_section)
2772 & (SEC_ALLOC | SEC_LOAD)) != 0
2773 && ! link_info.relocateable
2774 && strcmp (os->region->name, "*default*") == 0
2775 && lang_memory_region_list != NULL
2776 && (strcmp (lang_memory_region_list->name, "*default*") != 0
2777 || lang_memory_region_list->next != NULL))
2778 einfo (_("%P: warning: no memory region specified for section `%s'\n"),
2779 bfd_get_section_name (output_bfd, os->bfd_section));
2781 dot = os->region->current;
2783 if (os->section_alignment == -1)
2788 dot = align_power (dot, os->bfd_section->alignment_power);
2790 if (dot != olddot && config.warn_section_align)
2791 einfo (_("%P: warning: changing start of section %s by %u bytes\n"),
2792 os->name, (unsigned int) (dot - olddot));
2799 r = exp_fold_tree (os->addr_tree,
2801 lang_allocating_phase_enum,
2803 if (r.valid_p == false)
2805 einfo (_("%F%S: non constant address expression for section %s\n"),
2808 dot = r.value + r.section->bfd_section->vma;
2811 /* The section starts here.
2812 First, align to what the section needs. */
2814 if (os->section_alignment != -1)
2815 dot = align_power (dot, os->section_alignment);
2817 bfd_set_section_vma (0, os->bfd_section, dot);
2819 os->bfd_section->output_offset = 0;
2822 (void) lang_size_sections (os->children.head, os, &os->children.head,
2823 os->fill, dot, relax);
2825 /* put the section within the requested block size, or align at
2826 the block boundary */
2827 after = ALIGN_N (os->bfd_section->vma,
2828 os->bfd_section->_raw_size / opb,
2829 /* The coercion here is important, see ld.h. */
2830 (bfd_vma) os->block_value);
2832 if (bfd_is_abs_section (os->bfd_section))
2833 ASSERT (after == os->bfd_section->vma);
2835 os->bfd_section->_raw_size =
2836 (after - os->bfd_section->vma) * opb;
2837 dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
2838 os->processed = true;
2840 /* Update dot in the region ?
2841 We only do this if the section is going to be allocated,
2842 since unallocated sections do not contribute to the region's
2843 overall size in memory.
2845 If the SEC_NEVER_LOAD bit is not set, it will affect the
2846 addresses of sections after it. We have to update
2848 if (os->region != (lang_memory_region_type *) NULL
2849 && ((bfd_get_section_flags (output_bfd, os->bfd_section)
2850 & SEC_NEVER_LOAD) == 0
2851 || (bfd_get_section_flags (output_bfd, os->bfd_section)
2852 & (SEC_ALLOC | SEC_LOAD))))
2854 os->region->current = dot;
2856 /* Make sure the new address is within the region. We
2857 explicitly permit the current address to be at the
2858 exact end of the region when the VMA is non-zero,
2859 in case the region is at the end of addressable
2860 memory and the calculation wraps around. */
2861 if ((os->region->current < os->region->origin
2862 || (os->region->current - os->region->origin
2863 > os->region->length))
2864 && ((os->region->current
2865 != os->region->origin + os->region->length)
2866 || os->bfd_section->vma == 0))
2869 if (os->addr_tree != (etree_type *) NULL)
2871 einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"),
2872 os->region->current,
2873 os->bfd_section->owner,
2874 os->bfd_section->name,
2879 einfo (_("%X%P: region %s is full (%B section %s)\n"),
2881 os->bfd_section->owner,
2882 os->bfd_section->name);
2884 /* Reset the region pointer. */
2885 os->region->current = os->region->origin;
2891 case lang_constructors_statement_enum:
2892 dot = lang_size_sections (constructor_list.head,
2893 output_section_statement,
2894 &s->wild_statement.children.head,
2899 case lang_data_statement_enum:
2901 unsigned int size = 0;
2903 s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma;
2904 s->data_statement.output_section =
2905 output_section_statement->bfd_section;
2907 switch (s->data_statement.type)
2926 output_section_statement->bfd_section->_raw_size += size;
2927 /* The output section gets contents, and then we inspect for
2928 any flags set in the input script which override any ALLOC. */
2929 output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS;
2930 if (!(output_section_statement->flags & SEC_NEVER_LOAD)) {
2931 output_section_statement->bfd_section->flags |= SEC_ALLOC | SEC_LOAD;
2936 case lang_reloc_statement_enum:
2940 s->reloc_statement.output_vma =
2941 dot - output_section_statement->bfd_section->vma;
2942 s->reloc_statement.output_section =
2943 output_section_statement->bfd_section;
2944 size = bfd_get_reloc_size (s->reloc_statement.howto);
2946 output_section_statement->bfd_section->_raw_size += size;
2950 case lang_wild_statement_enum:
2952 dot = lang_size_sections (s->wild_statement.children.head,
2953 output_section_statement,
2954 &s->wild_statement.children.head,
2960 case lang_object_symbols_statement_enum:
2961 link_info.create_object_symbols_section =
2962 output_section_statement->bfd_section;
2964 case lang_output_statement_enum:
2965 case lang_target_statement_enum:
2967 case lang_input_section_enum:
2971 i = (*prev)->input_section.section;
2974 if (i->_cooked_size == 0)
2975 i->_cooked_size = i->_raw_size;
2981 if (! bfd_relax_section (i->owner, i, &link_info, &again))
2982 einfo (_("%P%F: can't relax section: %E\n"));
2986 dot = size_input_section (prev,
2987 output_section_statement,
2988 output_section_statement->fill,
2992 case lang_input_statement_enum:
2994 case lang_fill_statement_enum:
2995 s->fill_statement.output_section = output_section_statement->bfd_section;
2997 fill = s->fill_statement.fill;
2999 case lang_assignment_statement_enum:
3001 bfd_vma newdot = dot;
3003 exp_fold_tree (s->assignment_statement.exp,
3004 output_section_statement,
3005 lang_allocating_phase_enum,
3011 /* The assignment changed dot. Insert a pad. */
3012 if (output_section_statement == abs_output_section)
3014 /* If we don't have an output section, then just adjust
3015 the default memory address. */
3016 lang_memory_region_lookup ("*default*")->current = newdot;
3020 lang_statement_union_type *new =
3021 ((lang_statement_union_type *)
3022 stat_alloc (sizeof (lang_padding_statement_type)));
3024 /* Link into existing chain. */
3025 new->header.next = *prev;
3027 new->header.type = lang_padding_statement_enum;
3028 new->padding_statement.output_section =
3029 output_section_statement->bfd_section;
3030 new->padding_statement.output_offset =
3031 dot - output_section_statement->bfd_section->vma;
3032 new->padding_statement.fill = fill;
3033 new->padding_statement.size = (newdot - dot) * opb;
3034 output_section_statement->bfd_section->_raw_size +=
3035 new->padding_statement.size;
3043 case lang_padding_statement_enum:
3044 /* If we are relaxing, and this is not the first pass, some
3045 padding statements may have been inserted during previous
3046 passes. We may have to move the padding statement to a new
3047 location if dot has a different value at this point in this
3048 pass than it did at this point in the previous pass. */
3049 s->padding_statement.output_offset =
3050 dot - output_section_statement->bfd_section->vma;
3051 dot += s->padding_statement.size / opb;
3052 output_section_statement->bfd_section->_raw_size +=
3053 s->padding_statement.size;
3056 case lang_group_statement_enum:
3057 dot = lang_size_sections (s->group_statement.children.head,
3058 output_section_statement,
3059 &s->group_statement.children.head,
3067 /* This can only get here when relaxing is turned on. */
3069 case lang_address_statement_enum:
3072 prev = &s->header.next;
3078 lang_do_assignments (s, output_section_statement, fill, dot)
3079 lang_statement_union_type * s;
3080 lang_output_section_statement_type * output_section_statement;
3084 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3085 ldfile_output_machine);
3087 for (; s != (lang_statement_union_type *) NULL; s = s->next)
3089 switch (s->header.type)
3091 case lang_constructors_statement_enum:
3092 dot = lang_do_assignments (constructor_list.head,
3093 output_section_statement,
3098 case lang_output_section_statement_enum:
3100 lang_output_section_statement_type *os =
3101 &(s->output_section_statement);
3103 if (os->bfd_section != NULL)
3105 dot = os->bfd_section->vma;
3106 (void) lang_do_assignments (os->children.head, os,
3108 dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
3113 /* If nothing has been placed into the output section then
3114 it won't have a bfd_section. */
3115 if (os->bfd_section)
3117 os->bfd_section->lma
3118 = exp_get_abs_int(os->load_base, 0,"load base", lang_final_phase_enum);
3123 case lang_wild_statement_enum:
3125 dot = lang_do_assignments (s->wild_statement.children.head,
3126 output_section_statement,
3131 case lang_object_symbols_statement_enum:
3132 case lang_output_statement_enum:
3133 case lang_target_statement_enum:
3135 case lang_common_statement_enum:
3138 case lang_data_statement_enum:
3140 etree_value_type value;
3142 value = exp_fold_tree (s->data_statement.exp,
3144 lang_final_phase_enum, dot, &dot);
3145 s->data_statement.value = value.value;
3146 if (value.valid_p == false)
3147 einfo (_("%F%P: invalid data statement\n"));
3151 switch (s->data_statement.type)
3173 case lang_reloc_statement_enum:
3175 etree_value_type value;
3177 value = exp_fold_tree (s->reloc_statement.addend_exp,
3179 lang_final_phase_enum, dot, &dot);
3180 s->reloc_statement.addend_value = value.value;
3181 if (value.valid_p == false)
3182 einfo (_("%F%P: invalid reloc statement\n"));
3184 dot += bfd_get_reloc_size (s->reloc_statement.howto) / opb;
3187 case lang_input_section_enum:
3189 asection *in = s->input_section.section;
3191 if (in->_cooked_size != 0)
3192 dot += in->_cooked_size / opb;
3194 dot += in->_raw_size / opb;
3198 case lang_input_statement_enum:
3200 case lang_fill_statement_enum:
3201 fill = s->fill_statement.fill;
3203 case lang_assignment_statement_enum:
3205 exp_fold_tree (s->assignment_statement.exp,
3206 output_section_statement,
3207 lang_final_phase_enum,
3213 case lang_padding_statement_enum:
3214 dot += s->padding_statement.size / opb;
3217 case lang_group_statement_enum:
3218 dot = lang_do_assignments (s->group_statement.children.head,
3219 output_section_statement,
3227 case lang_address_statement_enum:
3235 /* Fix any .startof. or .sizeof. symbols. When the assemblers see the
3236 operator .startof. (section_name), it produces an undefined symbol
3237 .startof.section_name. Similarly, when it sees
3238 .sizeof. (section_name), it produces an undefined symbol
3239 .sizeof.section_name. For all the output sections, we look for
3240 such symbols, and set them to the correct value. */
3247 if (link_info.relocateable)
3250 for (s = output_bfd->sections; s != NULL; s = s->next)
3252 const char *secname;
3254 struct bfd_link_hash_entry *h;
3256 secname = bfd_get_section_name (output_bfd, s);
3257 buf = xmalloc (10 + strlen (secname));
3259 sprintf (buf, ".startof.%s", secname);
3260 h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
3261 if (h != NULL && h->type == bfd_link_hash_undefined)
3263 h->type = bfd_link_hash_defined;
3264 h->u.def.value = bfd_get_section_vma (output_bfd, s);
3265 h->u.def.section = bfd_abs_section_ptr;
3268 sprintf (buf, ".sizeof.%s", secname);
3269 h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
3270 if (h != NULL && h->type == bfd_link_hash_undefined)
3272 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3273 ldfile_output_machine);
3274 h->type = bfd_link_hash_defined;
3275 if (s->_cooked_size != 0)
3276 h->u.def.value = s->_cooked_size / opb;
3278 h->u.def.value = s->_raw_size / opb;
3279 h->u.def.section = bfd_abs_section_ptr;
3289 struct bfd_link_hash_entry *h;
3292 if (link_info.relocateable || link_info.shared)
3297 if (entry_symbol == (char *) NULL)
3299 /* No entry has been specified. Look for start, but don't warn
3300 if we don't find it. */
3301 entry_symbol = "start";
3305 h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
3306 if (h != (struct bfd_link_hash_entry *) NULL
3307 && (h->type == bfd_link_hash_defined
3308 || h->type == bfd_link_hash_defweak)
3309 && h->u.def.section->output_section != NULL)
3313 val = (h->u.def.value
3314 + bfd_get_section_vma (output_bfd,
3315 h->u.def.section->output_section)
3316 + h->u.def.section->output_offset);
3317 if (! bfd_set_start_address (output_bfd, val))
3318 einfo (_("%P%F:%s: can't set start address\n"), entry_symbol);
3325 /* We couldn't find the entry symbol. Try parsing it as a
3327 val = bfd_scan_vma (entry_symbol, &send, 0);
3330 if (! bfd_set_start_address (output_bfd, val))
3331 einfo (_("%P%F: can't set start address\n"));
3337 /* Can't find the entry symbol, and it's not a number. Use
3338 the first address in the text section. */
3339 ts = bfd_get_section_by_name (output_bfd, ".text");
3340 if (ts != (asection *) NULL)
3343 einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"),
3344 entry_symbol, bfd_get_section_vma (output_bfd, ts));
3345 if (! bfd_set_start_address (output_bfd,
3346 bfd_get_section_vma (output_bfd,
3348 einfo (_("%P%F: can't set start address\n"));
3353 einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"),
3360 /* This is a small function used when we want to ignore errors from
3364 #ifdef ANSI_PROTOTYPES
3365 ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...)
3367 ignore_bfd_errors (s)
3368 const char *s ATTRIBUTE_UNUSED;
3371 /* Don't do anything. */
3374 /* Check that the architecture of all the input files is compatible
3375 with the output file. Also call the backend to let it do any
3376 other checking that is needed. */
3381 lang_statement_union_type *file;
3383 CONST bfd_arch_info_type *compatible;
3385 for (file = file_chain.head;
3386 file != (lang_statement_union_type *) NULL;
3387 file = file->input_statement.next)
3389 input_bfd = file->input_statement.the_bfd;
3390 compatible = bfd_arch_get_compatible (input_bfd,
3392 if (compatible == NULL)
3394 if (command_line.warn_mismatch)
3395 einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"),
3396 bfd_printable_name (input_bfd), input_bfd,
3397 bfd_printable_name (output_bfd));
3401 bfd_error_handler_type pfn = NULL;
3403 /* If we aren't supposed to warn about mismatched input
3404 files, temporarily set the BFD error handler to a
3405 function which will do nothing. We still want to call
3406 bfd_merge_private_bfd_data, since it may set up
3407 information which is needed in the output file. */
3408 if (! command_line.warn_mismatch)
3409 pfn = bfd_set_error_handler (ignore_bfd_errors);
3410 if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
3412 if (command_line.warn_mismatch)
3413 einfo (_("%E%X: failed to merge target specific data of file %B\n"),
3416 if (! command_line.warn_mismatch)
3417 bfd_set_error_handler (pfn);
3422 /* Look through all the global common symbols and attach them to the
3423 correct section. The -sort-common command line switch may be used
3424 to roughly sort the entries by size. */
3429 if (link_info.relocateable
3430 && ! command_line.force_common_definition)
3433 if (! config.sort_common)
3434 bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL);
3439 for (power = 4; power >= 0; power--)
3440 bfd_link_hash_traverse (link_info.hash, lang_one_common,
3445 /* Place one common symbol in the correct section. */
3448 lang_one_common (h, info)
3449 struct bfd_link_hash_entry *h;
3452 unsigned int power_of_two;
3455 int opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
3456 ldfile_output_machine);
3458 if (h->type != bfd_link_hash_common)
3462 power_of_two = h->u.c.p->alignment_power;
3464 if (config.sort_common
3465 && power_of_two < (unsigned int) *(int *) info)
3468 section = h->u.c.p->section;
3470 /* Increase the size of the section. */
3471 section->_cooked_size = ALIGN_N ((section->_cooked_size + opb - 1) / opb,
3472 (bfd_size_type) (1 << power_of_two)) * opb;
3474 /* Adjust the alignment if necessary. */
3475 if (power_of_two > section->alignment_power)
3476 section->alignment_power = power_of_two;
3478 /* Change the symbol from common to defined. */
3479 h->type = bfd_link_hash_defined;
3480 h->u.def.section = section;
3481 h->u.def.value = section->_cooked_size;
3483 /* Increase the size of the section. */
3484 section->_cooked_size += size;
3486 /* Make sure the section is allocated in memory, and make sure that
3487 it is no longer a common section. */
3488 section->flags |= SEC_ALLOC;
3489 section->flags &= ~ SEC_IS_COMMON;
3491 if (config.map_file != NULL)
3493 static boolean header_printed;
3498 if (! header_printed)
3500 minfo (_("\nAllocating common symbols\n"));
3501 minfo (_("Common symbol size file\n\n"));
3502 header_printed = true;
3505 name = demangle (h->root.string);
3507 len = strlen (name);
3522 if (size <= 0xffffffff)
3523 sprintf (buf, "%lx", (unsigned long) size);
3525 sprintf_vma (buf, size);
3535 minfo ("%B\n", section->owner);
3542 run through the input files and ensure that every input
3543 section has somewhere to go. If one is found without
3544 a destination then create an input request and place it
3545 into the statement tree.
3549 lang_place_orphans ()
3551 LANG_FOR_EACH_INPUT_STATEMENT (file)
3555 for (s = file->the_bfd->sections;
3556 s != (asection *) NULL;
3559 if (s->output_section == (asection *) NULL)
3561 /* This section of the file is not attatched, root
3562 around for a sensible place for it to go */
3564 if (file->just_syms_flag)
3566 /* We are only retrieving symbol values from this
3567 file. We want the symbols to act as though the
3568 values in the file are absolute. */
3569 s->output_section = bfd_abs_section_ptr;
3570 s->output_offset = s->vma;
3572 else if (strcmp (s->name, "COMMON") == 0)
3574 /* This is a lonely common section which must have
3575 come from an archive. We attach to the section
3576 with the wildcard. */
3577 if (! link_info.relocateable
3578 || command_line.force_common_definition)
3580 if (default_common_section == NULL)
3583 /* This message happens when using the
3584 svr3.ifile linker script, so I have
3586 info_msg (_("%P: no [COMMON] command, defaulting to .bss\n"));
3588 default_common_section =
3589 lang_output_section_statement_lookup (".bss");
3592 wild_doit (&default_common_section->children, s,
3593 default_common_section, file);
3596 else if (ldemul_place_orphan (file, s))
3600 lang_output_section_statement_type *os =
3601 lang_output_section_statement_lookup (s->name);
3603 wild_doit (&os->children, s, os, file);
3612 lang_set_flags (ptr, flags, invert)
3613 lang_memory_region_type *ptr;
3617 flagword *ptr_flags;
3619 ptr_flags = invert ? &ptr->not_flags : &ptr->flags;
3625 *ptr_flags |= SEC_ALLOC;
3629 *ptr_flags |= SEC_READONLY;
3633 *ptr_flags |= SEC_DATA;
3637 *ptr_flags |= SEC_CODE;
3642 *ptr_flags |= SEC_LOAD;
3646 einfo (_("%P%F: invalid syntax in flags\n"));
3653 /* Call a function on each input file. This function will be called
3654 on an archive, but not on the elements. */
3657 lang_for_each_input_file (func)
3658 void (*func) PARAMS ((lang_input_statement_type *));
3660 lang_input_statement_type *f;
3662 for (f = (lang_input_statement_type *) input_file_chain.head;
3664 f = (lang_input_statement_type *) f->next_real_file)
3668 /* Call a function on each file. The function will be called on all
3669 the elements of an archive which are included in the link, but will
3670 not be called on the archive file itself. */
3673 lang_for_each_file (func)
3674 void (*func) PARAMS ((lang_input_statement_type *));
3676 LANG_FOR_EACH_INPUT_STATEMENT (f)
3687 lang_for_each_input_section (func)
3688 void (*func) PARAMS ((bfd * ab, asection * as));
3690 LANG_FOR_EACH_INPUT_STATEMENT (f)
3694 for (s = f->the_bfd->sections;
3695 s != (asection *) NULL;
3698 func (f->the_bfd, s);
3706 ldlang_add_file (entry)
3707 lang_input_statement_type * entry;
3711 lang_statement_append (&file_chain,
3712 (lang_statement_union_type *) entry,
3715 /* The BFD linker needs to have a list of all input BFDs involved in
3717 ASSERT (entry->the_bfd->link_next == (bfd *) NULL);
3718 ASSERT (entry->the_bfd != output_bfd);
3719 for (pp = &link_info.input_bfds;
3720 *pp != (bfd *) NULL;
3721 pp = &(*pp)->link_next)
3723 *pp = entry->the_bfd;
3724 entry->the_bfd->usrdata = (PTR) entry;
3725 bfd_set_gp_size (entry->the_bfd, g_switch_value);
3727 /* Look through the sections and check for any which should not be
3728 included in the link. We need to do this now, so that we can
3729 notice when the backend linker tries to report multiple
3730 definition errors for symbols which are in sections we aren't
3731 going to link. FIXME: It might be better to entirely ignore
3732 symbols which are defined in sections which are going to be
3733 discarded. This would require modifying the backend linker for
3734 each backend which might set the SEC_LINK_ONCE flag. If we do
3735 this, we should probably handle SEC_EXCLUDE in the same way. */
3737 bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry);
3741 lang_add_output (name, from_script)
3745 /* Make -o on command line override OUTPUT in script. */
3746 if (had_output_filename == false || !from_script)
3748 output_filename = name;
3749 had_output_filename = true;
3754 static lang_output_section_statement_type *current_section;
3766 for (l = 0; l < 32; l++)
3768 if (i >= (unsigned int) x)
3777 lang_enter_output_section_statement (output_section_statement_name,
3778 address_exp, sectype, block_value,
3779 align, subalign, ebase)
3780 const char *output_section_statement_name;
3781 etree_type * address_exp;
3782 enum section_type sectype;
3783 bfd_vma block_value;
3785 etree_type *subalign;
3788 lang_output_section_statement_type *os;
3792 lang_output_section_statement_lookup (output_section_statement_name);
3796 /* Add this statement to tree */
3797 /* add_statement(lang_output_section_statement_enum,
3798 output_section_statement);*/
3799 /* Make next things chain into subchain of this */
3801 if (os->addr_tree ==
3802 (etree_type *) NULL)
3807 os->sectype = sectype;
3808 if (sectype != noload_section)
3809 os->flags = SEC_NO_FLAGS;
3811 os->flags = SEC_NEVER_LOAD;
3812 os->block_value = block_value ? block_value : 1;
3813 stat_ptr = &os->children;
3815 os->subsection_alignment = topower(
3816 exp_get_value_int(subalign, -1,
3817 "subsection alignment",
3819 os->section_alignment = topower(
3820 exp_get_value_int(align, -1,
3821 "section alignment", 0));
3823 os->load_base = ebase;
3830 lang_output_statement_type *new =
3831 new_stat (lang_output_statement, stat_ptr);
3833 new->name = output_filename;
3836 /* Reset the current counters in the regions */
3838 reset_memory_regions ()
3840 lang_memory_region_type *p = lang_memory_region_list;
3842 for (p = lang_memory_region_list;
3843 p != (lang_memory_region_type *) NULL;
3846 p->old_length = (bfd_size_type) (p->current - p->origin);
3847 p->current = p->origin;
3851 /* Expand a wild statement for a particular FILE, marking its sections KEEP
3852 as needed. SECTION may be NULL, in which case it is a wild card. */
3855 gc_section_callback (ptr, section, file, data)
3856 lang_wild_statement_type *ptr;
3858 lang_input_statement_type *file ATTRIBUTE_UNUSED;
3859 void *data ATTRIBUTE_UNUSED;
3861 /* If the wild pattern was marked KEEP, the member sections
3862 should be as well. */
3863 if (ptr->keep_sections)
3864 section->flags |= SEC_KEEP;
3867 /* Handle a wild statement, marking it against GC. SECTION or FILE or both
3868 may be NULL, indicating that it is a wildcard. */
3871 lang_gc_wild (s, section, file)
3872 lang_wild_statement_type *s;
3873 const char *section;
3876 walk_wild (s, section, file, gc_section_callback, NULL);
3879 /* Iterate over sections marking them against GC. */
3882 lang_gc_sections_1 (s)
3883 lang_statement_union_type * s;
3885 for (; s != (lang_statement_union_type *) NULL; s = s->next)
3887 switch (s->header.type)
3889 case lang_wild_statement_enum:
3890 lang_gc_wild (&s->wild_statement,
3891 s->wild_statement.section_name,
3892 s->wild_statement.filename);
3894 case lang_constructors_statement_enum:
3895 lang_gc_sections_1 (constructor_list.head);
3897 case lang_output_section_statement_enum:
3898 lang_gc_sections_1 (s->output_section_statement.children.head);
3900 case lang_group_statement_enum:
3901 lang_gc_sections_1 (s->group_statement.children.head);
3912 struct bfd_link_hash_entry *h;
3913 ldlang_undef_chain_list_type *ulist, fake_list_start;
3915 /* Keep all sections so marked in the link script. */
3917 lang_gc_sections_1 (statement_list.head);
3919 /* Keep all sections containing symbols undefined on the command-line.
3920 Handle the entry symbol at the same time. */
3922 if (entry_symbol != NULL)
3924 fake_list_start.next = ldlang_undef_chain_list_head;
3925 fake_list_start.name = (char *) entry_symbol;
3926 ulist = &fake_list_start;
3929 ulist = ldlang_undef_chain_list_head;
3931 for (; ulist; ulist = ulist->next)
3933 h = bfd_link_hash_lookup (link_info.hash, ulist->name,
3934 false, false, false);
3936 if (h != (struct bfd_link_hash_entry *) NULL
3937 && (h->type == bfd_link_hash_defined
3938 || h->type == bfd_link_hash_defweak)
3939 && ! bfd_is_abs_section (h->u.def.section))
3941 h->u.def.section->flags |= SEC_KEEP;
3945 bfd_gc_sections (output_bfd, &link_info);
3951 lang_reasonable_defaults ();
3952 current_target = default_target;
3954 lang_for_each_statement (ldlang_open_output); /* Open the output file */
3956 ldemul_create_output_section_statements ();
3958 /* Add to the hash table all undefineds on the command line */
3959 lang_place_undefineds ();
3961 already_linked_table_init ();
3963 /* Create a bfd for each input file */
3964 current_target = default_target;
3965 open_input_bfds (statement_list.head, false);
3967 ldemul_after_open ();
3969 already_linked_table_free ();
3971 /* Make sure that we're not mixing architectures. We call this
3972 after all the input files have been opened, but before we do any
3973 other processing, so that any operations merge_private_bfd_data
3974 does on the output file will be known during the rest of the
3978 /* Handle .exports instead of a version script if we're told to do so. */
3979 if (command_line.version_exports_section)
3980 lang_do_version_exports_section ();
3982 /* Build all sets based on the information gathered from the input
3984 ldctor_build_sets ();
3986 /* Remove unreferenced sections if asked to. */
3987 if (command_line.gc_sections)
3988 lang_gc_sections ();
3990 /* Size up the common data */
3993 /* Run through the contours of the script and attach input sections
3994 to the correct output sections
3996 map_input_to_output_sections (statement_list.head, (char *) NULL,
3997 (lang_output_section_statement_type *) NULL);
4000 /* Find any sections not attached explicitly and handle them */
4001 lang_place_orphans ();
4003 ldemul_before_allocation ();
4005 /* We must record the program headers before we try to fix the
4006 section positions, since they will affect SIZEOF_HEADERS. */
4007 lang_record_phdrs ();
4009 /* Now run around and relax if we can */
4010 if (command_line.relax)
4012 /* First time round is a trial run to get the 'worst case'
4013 addresses of the objects if there was no relaxing. */
4014 lang_size_sections (statement_list.head,
4016 &(statement_list.head), 0, (bfd_vma) 0, false);
4018 /* Keep relaxing until bfd_relax_section gives up. */
4021 reset_memory_regions ();
4023 relax_again = false;
4025 /* Note: pe-dll.c does something like this also. If you find
4026 you need to change this code, you probably need to change
4027 pe-dll.c also. DJ */
4029 /* Do all the assignments with our current guesses as to
4031 lang_do_assignments (statement_list.head,
4033 (fill_type) 0, (bfd_vma) 0);
4035 /* Perform another relax pass - this time we know where the
4036 globals are, so can make better guess. */
4037 lang_size_sections (statement_list.head,
4039 &(statement_list.head), 0, (bfd_vma) 0, true);
4041 while (relax_again);
4045 /* Size up the sections. */
4046 lang_size_sections (statement_list.head,
4048 &(statement_list.head), 0, (bfd_vma) 0, false);
4051 /* See if anything special should be done now we know how big
4053 ldemul_after_allocation ();
4055 /* Fix any .startof. or .sizeof. symbols. */
4056 lang_set_startof ();
4058 /* Do all the assignments, now that we know the final restingplaces
4059 of all the symbols */
4061 lang_do_assignments (statement_list.head,
4063 (fill_type) 0, (bfd_vma) 0);
4065 /* Make sure that the section addresses make sense. */
4066 if (! link_info.relocateable
4067 && command_line.check_section_addresses)
4068 lang_check_section_addresses ();
4076 /* EXPORTED TO YACC */
4079 lang_add_wild (section_name, sections_sorted, filename, filenames_sorted,
4080 keep_sections, exclude_filename_list)
4081 const char *const section_name;
4082 boolean sections_sorted;
4083 const char *const filename;
4084 boolean filenames_sorted;
4085 boolean keep_sections;
4086 struct name_list *exclude_filename_list;
4088 lang_wild_statement_type *new = new_stat (lang_wild_statement,
4091 if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0)
4093 placed_commons = true;
4095 if (filename != NULL && ! wildcardp (filename))
4097 lang_has_input_file = true;
4099 new->section_name = section_name;
4100 new->sections_sorted = sections_sorted;
4101 new->filename = filename;
4102 new->filenames_sorted = filenames_sorted;
4103 new->keep_sections = keep_sections;
4104 new->exclude_filename_list = exclude_filename_list;
4105 lang_list_init (&new->children);
4109 lang_section_start (name, address)
4111 etree_type * address;
4113 lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr);
4115 ad->section_name = name;
4116 ad->address = address;
4119 /* Set the start symbol to NAME. CMDLINE is nonzero if this is called
4120 because of a -e argument on the command line, or zero if this is
4121 called by ENTRY in a linker script. Command line arguments take
4125 lang_add_entry (name, cmdline)
4129 if (entry_symbol == NULL
4131 || ! entry_from_cmdline)
4133 entry_symbol = name;
4134 entry_from_cmdline = cmdline;
4139 lang_add_target (name)
4142 lang_target_statement_type *new = new_stat (lang_target_statement,
4158 map_option_f = true;
4169 lang_fill_statement_type *new = new_stat (lang_fill_statement,
4176 lang_add_data (type, exp)
4178 union etree_union *exp;
4181 lang_data_statement_type *new = new_stat (lang_data_statement,
4189 /* Create a new reloc statement. RELOC is the BFD relocation type to
4190 generate. HOWTO is the corresponding howto structure (we could
4191 look this up, but the caller has already done so). SECTION is the
4192 section to generate a reloc against, or NAME is the name of the
4193 symbol to generate a reloc against. Exactly one of SECTION and
4194 NAME must be NULL. ADDEND is an expression for the addend. */
4197 lang_add_reloc (reloc, howto, section, name, addend)
4198 bfd_reloc_code_real_type reloc;
4199 reloc_howto_type *howto;
4202 union etree_union *addend;
4204 lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
4208 p->section = section;
4210 p->addend_exp = addend;
4212 p->addend_value = 0;
4213 p->output_section = NULL;
4217 lang_assignment_statement_type *
4218 lang_add_assignment (exp)
4221 lang_assignment_statement_type *new = new_stat (lang_assignment_statement,
4229 lang_add_attribute (attribute)
4230 enum statement_enum attribute;
4232 new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr);
4239 if (startup_file != (char *) NULL)
4241 einfo (_("%P%Fmultiple STARTUP files\n"));
4243 first_file->filename = name;
4244 first_file->local_sym_name = name;
4245 first_file->real = true;
4247 startup_file = name;
4254 lang_float_flag = maybe;
4258 lang_leave_output_section_statement (fill, memspec, phdrs)
4260 const char *memspec;
4261 struct lang_output_section_phdr_list *phdrs;
4263 current_section->fill = fill;
4264 current_section->region = lang_memory_region_lookup (memspec);
4265 current_section->phdrs = phdrs;
4266 stat_ptr = &statement_list;
4270 Create an absolute symbol with the given name with the value of the
4271 address of first byte of the section named.
4273 If the symbol already exists, then do nothing.
4276 lang_abs_symbol_at_beginning_of (secname, name)
4277 const char *secname;
4280 struct bfd_link_hash_entry *h;
4282 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
4283 if (h == (struct bfd_link_hash_entry *) NULL)
4284 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
4286 if (h->type == bfd_link_hash_new
4287 || h->type == bfd_link_hash_undefined)
4291 h->type = bfd_link_hash_defined;
4293 sec = bfd_get_section_by_name (output_bfd, secname);
4294 if (sec == (asection *) NULL)
4297 h->u.def.value = bfd_get_section_vma (output_bfd, sec);
4299 h->u.def.section = bfd_abs_section_ptr;
4304 Create an absolute symbol with the given name with the value of the
4305 address of the first byte after the end of the section named.
4307 If the symbol already exists, then do nothing.
4310 lang_abs_symbol_at_end_of (secname, name)
4311 const char *secname;
4314 struct bfd_link_hash_entry *h;
4316 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
4317 if (h == (struct bfd_link_hash_entry *) NULL)
4318 einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
4320 if (h->type == bfd_link_hash_new
4321 || h->type == bfd_link_hash_undefined)
4325 h->type = bfd_link_hash_defined;
4327 sec = bfd_get_section_by_name (output_bfd, secname);
4328 if (sec == (asection *) NULL)
4331 h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
4332 + bfd_section_size (output_bfd, sec) /
4333 bfd_octets_per_byte (output_bfd));
4335 h->u.def.section = bfd_abs_section_ptr;
4340 lang_statement_append (list, element, field)
4341 lang_statement_list_type * list;
4342 lang_statement_union_type * element;
4343 lang_statement_union_type ** field;
4345 *(list->tail) = element;
4349 /* Set the output format type. -oformat overrides scripts. */
4352 lang_add_output_format (format, big, little, from_script)
4358 if (output_target == NULL || !from_script)
4360 if (command_line.endian == ENDIAN_BIG
4363 else if (command_line.endian == ENDIAN_LITTLE
4367 output_target = format;
4371 /* Enter a group. This creates a new lang_group_statement, and sets
4372 stat_ptr to build new statements within the group. */
4377 lang_group_statement_type *g;
4379 g = new_stat (lang_group_statement, stat_ptr);
4380 lang_list_init (&g->children);
4381 stat_ptr = &g->children;
4384 /* Leave a group. This just resets stat_ptr to start writing to the
4385 regular list of statements again. Note that this will not work if
4386 groups can occur inside anything else which can adjust stat_ptr,
4387 but currently they can't. */
4392 stat_ptr = &statement_list;
4395 /* Add a new program header. This is called for each entry in a PHDRS
4396 command in a linker script. */
4399 lang_new_phdr (name, type, filehdr, phdrs, at, flags)
4407 struct lang_phdr *n, **pp;
4409 n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
4412 n->type = exp_get_value_int (type, 0, "program header type",
4413 lang_final_phase_enum);
4414 n->filehdr = filehdr;
4419 for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
4424 /* Record the program header information in the output BFD. FIXME: We
4425 should not be calling an ELF specific function here. */
4428 lang_record_phdrs ()
4432 struct lang_output_section_phdr_list *last;
4433 struct lang_phdr *l;
4434 lang_statement_union_type *u;
4437 secs = (asection **) xmalloc (alc * sizeof (asection *));
4439 for (l = lang_phdr_list; l != NULL; l = l->next)
4446 for (u = lang_output_section_statement.head;
4448 u = u->output_section_statement.next)
4450 lang_output_section_statement_type *os;
4451 struct lang_output_section_phdr_list *pl;
4453 os = &u->output_section_statement;
4460 if (os->sectype == noload_section
4461 || os->bfd_section == NULL
4462 || (os->bfd_section->flags & SEC_ALLOC) == 0)
4467 if (os->bfd_section == NULL)
4470 for (; pl != NULL; pl = pl->next)
4472 if (strcmp (pl->name, l->name) == 0)
4477 secs = ((asection **)
4478 xrealloc (secs, alc * sizeof (asection *)));
4480 secs[c] = os->bfd_section;
4487 if (l->flags == NULL)
4490 flags = exp_get_vma (l->flags, 0, "phdr flags",
4491 lang_final_phase_enum);
4496 at = exp_get_vma (l->at, 0, "phdr load address",
4497 lang_final_phase_enum);
4499 if (! bfd_record_phdr (output_bfd, l->type,
4500 l->flags == NULL ? false : true,
4502 l->at == NULL ? false : true,
4503 at, l->filehdr, l->phdrs, c, secs))
4504 einfo (_("%F%P: bfd_record_phdr failed: %E\n"));
4509 /* Make sure all the phdr assignments succeeded. */
4510 for (u = lang_output_section_statement.head;
4512 u = u->output_section_statement.next)
4514 struct lang_output_section_phdr_list *pl;
4516 if (u->output_section_statement.bfd_section == NULL)
4519 for (pl = u->output_section_statement.phdrs;
4522 if (! pl->used && strcmp (pl->name, "NONE") != 0)
4523 einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"),
4524 u->output_section_statement.name, pl->name);
4528 /* Record a list of sections which may not be cross referenced. */
4531 lang_add_nocrossref (l)
4532 struct lang_nocrossref *l;
4534 struct lang_nocrossrefs *n;
4536 n = (struct lang_nocrossrefs *) xmalloc (sizeof *n);
4537 n->next = nocrossref_list;
4539 nocrossref_list = n;
4541 /* Set notice_all so that we get informed about all symbols. */
4542 link_info.notice_all = true;
4545 /* Overlay handling. We handle overlays with some static variables. */
4547 /* The overlay virtual address. */
4548 static etree_type *overlay_vma;
4550 /* The overlay load address. */
4551 static etree_type *overlay_lma;
4553 /* Whether nocrossrefs is set for this overlay. */
4554 static int overlay_nocrossrefs;
4556 /* An expression for the maximum section size seen so far. */
4557 static etree_type *overlay_max;
4559 /* A list of all the sections in this overlay. */
4563 struct overlay_list *next;
4564 lang_output_section_statement_type *os;
4567 static struct overlay_list *overlay_list;
4569 /* Start handling an overlay. */
4572 lang_enter_overlay (vma_expr, lma_expr, nocrossrefs)
4573 etree_type *vma_expr;
4574 etree_type *lma_expr;
4577 /* The grammar should prevent nested overlays from occurring. */
4578 ASSERT (overlay_vma == NULL
4579 && overlay_lma == NULL
4580 && overlay_list == NULL
4581 && overlay_max == NULL);
4583 overlay_vma = vma_expr;
4584 overlay_lma = lma_expr;
4585 overlay_nocrossrefs = nocrossrefs;
4588 /* Start a section in an overlay. We handle this by calling
4589 lang_enter_output_section_statement with the correct VMA and LMA. */
4592 lang_enter_overlay_section (name)
4595 struct overlay_list *n;
4598 lang_enter_output_section_statement (name, overlay_vma, normal_section,
4599 0, 0, 0, overlay_lma);
4601 /* If this is the first section, then base the VMA and LMA of future
4602 sections on this one. This will work correctly even if `.' is
4603 used in the addresses. */
4604 if (overlay_list == NULL)
4606 overlay_vma = exp_nameop (ADDR, name);
4607 overlay_lma = exp_nameop (LOADADDR, name);
4610 /* Remember the section. */
4611 n = (struct overlay_list *) xmalloc (sizeof *n);
4612 n->os = current_section;
4613 n->next = overlay_list;
4616 size = exp_nameop (SIZEOF, name);
4618 /* Adjust the LMA for the next section. */
4619 overlay_lma = exp_binop ('+', overlay_lma, size);
4621 /* Arrange to work out the maximum section end address. */
4622 if (overlay_max == NULL)
4625 overlay_max = exp_binop (MAX_K, overlay_max, size);
4628 /* Finish a section in an overlay. There isn't any special to do
4632 lang_leave_overlay_section (fill, phdrs)
4634 struct lang_output_section_phdr_list *phdrs;
4641 name = current_section->name;
4643 lang_leave_output_section_statement (fill, "*default*", phdrs);
4645 /* Define the magic symbols. */
4647 clean = xmalloc (strlen (name) + 1);
4649 for (s1 = name; *s1 != '\0'; s1++)
4650 if (isalnum ((unsigned char) *s1) || *s1 == '_')
4654 buf = xmalloc (strlen (clean) + sizeof "__load_start_");
4655 sprintf (buf, "__load_start_%s", clean);
4656 lang_add_assignment (exp_assop ('=', buf,
4657 exp_nameop (LOADADDR, name)));
4659 buf = xmalloc (strlen (clean) + sizeof "__load_stop_");
4660 sprintf (buf, "__load_stop_%s", clean);
4661 lang_add_assignment (exp_assop ('=', buf,
4663 exp_nameop (LOADADDR, name),
4664 exp_nameop (SIZEOF, name))));
4669 /* Finish an overlay. If there are any overlay wide settings, this
4670 looks through all the sections in the overlay and sets them. */
4673 lang_leave_overlay (fill, memspec, phdrs)
4675 const char *memspec;
4676 struct lang_output_section_phdr_list *phdrs;
4678 lang_memory_region_type *region;
4679 struct overlay_list *l;
4680 struct lang_nocrossref *nocrossref;
4682 if (memspec == NULL)
4685 region = lang_memory_region_lookup (memspec);
4692 struct overlay_list *next;
4694 if (fill != 0 && l->os->fill == 0)
4696 if (region != NULL && l->os->region == NULL)
4697 l->os->region = region;
4698 if (phdrs != NULL && l->os->phdrs == NULL)
4699 l->os->phdrs = phdrs;
4701 if (overlay_nocrossrefs)
4703 struct lang_nocrossref *nc;
4705 nc = (struct lang_nocrossref *) xmalloc (sizeof *nc);
4706 nc->name = l->os->name;
4707 nc->next = nocrossref;
4716 if (nocrossref != NULL)
4717 lang_add_nocrossref (nocrossref);
4719 /* Update . for the end of the overlay. */
4720 lang_add_assignment (exp_assop ('=', ".",
4721 exp_binop ('+', overlay_vma, overlay_max)));
4725 overlay_nocrossrefs = 0;
4726 overlay_list = NULL;
4730 /* Version handling. This is only useful for ELF. */
4732 /* This global variable holds the version tree that we build. */
4734 struct bfd_elf_version_tree *lang_elf_version_info;
4737 lang_vers_match_lang_c (expr, sym)
4738 struct bfd_elf_version_expr *expr;
4741 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
4743 return fnmatch (expr->pattern, sym, 0) == 0;
4747 lang_vers_match_lang_cplusplus (expr, sym)
4748 struct bfd_elf_version_expr *expr;
4754 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
4757 alt_sym = cplus_demangle(sym, /* DMGL_NO_TPARAMS */ 0);
4760 /* cplus_demangle (also) returns NULL when it is not a C++ symbol.
4761 Should we early out false in this case? */
4762 result = fnmatch (expr->pattern, sym, 0) == 0;
4766 result = fnmatch (expr->pattern, alt_sym, 0) == 0;
4774 lang_vers_match_lang_java (expr, sym)
4775 struct bfd_elf_version_expr *expr;
4781 if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
4784 alt_sym = cplus_demangle(sym, DMGL_JAVA);
4787 /* cplus_demangle (also) returns NULL when it is not a Java symbol.
4788 Should we early out false in this case? */
4789 result = fnmatch (expr->pattern, sym, 0) == 0;
4793 result = fnmatch (expr->pattern, alt_sym, 0) == 0;
4800 /* This is called for each variable name or match expression. */
4802 struct bfd_elf_version_expr *
4803 lang_new_vers_regex (orig, new, lang)
4804 struct bfd_elf_version_expr *orig;
4808 struct bfd_elf_version_expr *ret;
4810 ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret);
4814 if (lang == NULL || strcasecmp (lang, "C") == 0)
4815 ret->match = lang_vers_match_lang_c;
4816 else if (strcasecmp (lang, "C++") == 0)
4817 ret->match = lang_vers_match_lang_cplusplus;
4818 else if (strcasecmp (lang, "Java") == 0)
4819 ret->match = lang_vers_match_lang_java;
4822 einfo (_("%X%P: unknown language `%s' in version information\n"),
4824 ret->match = lang_vers_match_lang_c;
4830 /* This is called for each set of variable names and match
4833 struct bfd_elf_version_tree *
4834 lang_new_vers_node (globals, locals)
4835 struct bfd_elf_version_expr *globals;
4836 struct bfd_elf_version_expr *locals;
4838 struct bfd_elf_version_tree *ret;
4840 ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret);
4844 ret->globals = globals;
4845 ret->locals = locals;
4847 ret->name_indx = (unsigned int) -1;
4852 /* This static variable keeps track of version indices. */
4854 static int version_index;
4856 /* This is called when we know the name and dependencies of the
4860 lang_register_vers_node (name, version, deps)
4862 struct bfd_elf_version_tree *version;
4863 struct bfd_elf_version_deps *deps;
4865 struct bfd_elf_version_tree *t, **pp;
4866 struct bfd_elf_version_expr *e1;
4868 /* Make sure this node has a unique name. */
4869 for (t = lang_elf_version_info; t != NULL; t = t->next)
4870 if (strcmp (t->name, name) == 0)
4871 einfo (_("%X%P: duplicate version tag `%s'\n"), name);
4873 /* Check the global and local match names, and make sure there
4874 aren't any duplicates. */
4876 for (e1 = version->globals; e1 != NULL; e1 = e1->next)
4878 for (t = lang_elf_version_info; t != NULL; t = t->next)
4880 struct bfd_elf_version_expr *e2;
4882 for (e2 = t->locals; e2 != NULL; e2 = e2->next)
4883 if (strcmp (e1->pattern, e2->pattern) == 0)
4884 einfo (_("%X%P: duplicate expression `%s' in version information\n"),
4889 for (e1 = version->locals; e1 != NULL; e1 = e1->next)
4891 for (t = lang_elf_version_info; t != NULL; t = t->next)
4893 struct bfd_elf_version_expr *e2;
4895 for (e2 = t->globals; e2 != NULL; e2 = e2->next)
4896 if (strcmp (e1->pattern, e2->pattern) == 0)
4897 einfo (_("%X%P: duplicate expression `%s' in version information\n"),
4902 version->deps = deps;
4903 version->name = name;
4905 version->vernum = version_index;
4907 for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next)
4912 /* This is called when we see a version dependency. */
4914 struct bfd_elf_version_deps *
4915 lang_add_vers_depend (list, name)
4916 struct bfd_elf_version_deps *list;
4919 struct bfd_elf_version_deps *ret;
4920 struct bfd_elf_version_tree *t;
4922 ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret);
4925 for (t = lang_elf_version_info; t != NULL; t = t->next)
4927 if (strcmp (t->name, name) == 0)
4929 ret->version_needed = t;
4934 einfo (_("%X%P: unable to find version dependency `%s'\n"), name);
4940 lang_do_version_exports_section ()
4942 struct bfd_elf_version_expr *greg = NULL, *lreg;
4944 LANG_FOR_EACH_INPUT_STATEMENT (is)
4946 asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports");
4953 len = bfd_section_size (is->the_bfd, sec);
4954 contents = xmalloc (len);
4955 if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len))
4956 einfo (_("%X%P: unable to read .exports section contents"), sec);
4959 while (p < contents+len)
4961 greg = lang_new_vers_regex (greg, p, NULL);
4962 p = strchr (p, '\0') + 1;
4965 /* Do not free the contents, as we used them creating the regex. */
4967 /* Do not include this section in the link. */
4968 bfd_set_section_flags (is->the_bfd, sec,
4969 bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE);
4972 lreg = lang_new_vers_regex (NULL, "*", NULL);
4973 lang_register_vers_node (command_line.version_exports_section,
4974 lang_new_vers_node (greg, lreg), NULL);