1 /* Linker command language support.
2 Copyright (C) 1991, 92, 93, 94 Free Software Foundation, Inc.
4 This file is part of GLD, the Gnu Linker.
6 GLD is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
11 GLD is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GLD; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
36 static void print_statements PARAMS ((void));
37 static void print_statement PARAMS ((lang_statement_union_type *,
38 lang_output_section_statement_type *));
39 static lang_statement_union_type *new_statement PARAMS ((enum statement_enum,
41 lang_statement_list_type*));
45 static struct obstack stat_obstack;
47 #define obstack_chunk_alloc xmalloc
48 #define obstack_chunk_free free
49 static CONST char *startup_file;
50 static lang_statement_list_type input_file_chain;
52 /* Points to the last statement in the .data section, so we can add
53 stuff to the data section without pain */
54 static lang_statement_list_type end_of_data_section_statement_list;
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 int longest_section_name = 8;
65 static lang_statement_list_type statement_list;
67 static void print_size PARAMS ((size_t value));
68 static void print_alignment PARAMS ((unsigned int value));
69 static void print_fill PARAMS ((fill_type value));
70 static void print_section PARAMS ((const char *name));
71 static void lang_for_each_statement_worker
72 PARAMS ((void (*func) (lang_statement_union_type *),
73 lang_statement_union_type *s));
74 static lang_input_statement_type *new_afile
75 PARAMS ((const char *name, lang_input_file_enum_type file_type,
77 static void print_flags PARAMS ((int *ignore_flags));
78 static void init_os PARAMS ((lang_output_section_statement_type *s));
79 static void wild_doit PARAMS ((lang_statement_list_type *ptr,
81 lang_output_section_statement_type *output,
82 lang_input_statement_type *file));
83 static asection *our_bfd_get_section_by_name PARAMS ((bfd *abfd,
84 const char *section));
85 static void wild_section PARAMS ((lang_wild_statement_type *ptr,
87 lang_input_statement_type *file,
88 lang_output_section_statement_type *output));
89 static lang_input_statement_type *lookup_name PARAMS ((const char *name));
90 static void wild PARAMS ((lang_wild_statement_type *s,
91 const char *section, const char *file,
93 lang_output_section_statement_type *output));
94 static bfd *open_output PARAMS ((const char *name));
95 static void ldlang_open_output PARAMS ((lang_statement_union_type *statement));
96 static void open_input_bfds PARAMS ((lang_statement_union_type *statement));
97 static void lang_reasonable_defaults PARAMS ((void));
98 static void lang_place_undefineds PARAMS ((void));
99 static void lang_create_output_section_statements PARAMS ((void));
100 static void map_input_to_output_sections
101 PARAMS ((lang_statement_union_type *s,
103 lang_output_section_statement_type *output_section_statement));
104 static void print_output_section_statement
105 PARAMS ((lang_output_section_statement_type *output_section_statement));
106 static void print_assignment
107 PARAMS ((lang_assignment_statement_type *assignment,
108 lang_output_section_statement_type *output_section));
109 static void print_input_statement PARAMS ((lang_input_statement_type *statm));
110 static void print_symbol PARAMS ((asymbol *q));
111 static void print_input_section PARAMS ((lang_input_section_type *in));
112 static void print_fill_statement PARAMS ((lang_fill_statement_type *fill));
113 static void print_data_statement PARAMS ((lang_data_statement_type *data));
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_statement PARAMS ((lang_statement_union_type *s,
119 lang_output_section_statement_type *os));
120 static void print_statements PARAMS ((void));
121 static bfd_vma insert_pad PARAMS ((lang_statement_union_type **this_ptr,
122 fill_type fill, unsigned int power,
123 asection *output_section_statement,
125 static bfd_vma size_input_section
126 PARAMS ((lang_statement_union_type **this_ptr,
127 lang_output_section_statement_type *output_section_statement,
128 fill_type fill, bfd_vma dot, boolean relax));
129 static bfd_vma lang_size_sections
130 PARAMS ((lang_statement_union_type *s,
131 lang_output_section_statement_type *output_section_statement,
132 lang_statement_union_type **prev, fill_type fill,
133 bfd_vma dot, boolean relax));
134 static bfd_vma lang_do_assignments
135 PARAMS ((lang_statement_union_type * s,
136 lang_output_section_statement_type *output_section_statement,
139 static void lang_finish PARAMS ((void));
140 static void lang_check PARAMS ((void));
141 static void lang_common PARAMS ((void));
142 static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
143 static void lang_place_orphans PARAMS ((void));
144 static int topower PARAMS ((int));
145 static void reset_memory_regions PARAMS ((void));
148 lang_output_section_statement_type *abs_output_section;
149 lang_statement_list_type *stat_ptr = &statement_list;
150 lang_statement_list_type file_chain =
152 CONST char *entry_symbol = 0;
153 bfd_size_type largest_section = 0;
154 boolean lang_has_input_file = false;
155 boolean had_output_filename = false;
156 boolean lang_float_flag = false;
157 boolean delete_output_file_on_failure = false;
159 etree_type *base; /* Relocation base - or null */
163 #define cat(a,b) a##b
165 #define cat(a,b) a/**/b
168 #define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y)
170 #define outside_section_address(q) ( (q)->output_offset + (q)->output_section->vma)
172 #define outside_symbol_address(q) ((q)->value + outside_section_address(q->section))
178 return obstack_alloc (&stat_obstack, size);
185 fprintf (config.map_file, "%5x", (unsigned) value);
189 print_alignment (value)
192 fprintf (config.map_file, "2**%1u", value);
199 fprintf (config.map_file, "%04x", (unsigned) value);
206 fprintf (config.map_file, "%*s", -longest_section_name, name);
209 /*----------------------------------------------------------------------
210 lang_for_each_statement walks the parse tree and calls the provided
211 function for each node
215 lang_for_each_statement_worker (func, s)
216 void (*func) PARAMS ((lang_statement_union_type *));
217 lang_statement_union_type *s;
219 for (; s != (lang_statement_union_type *) NULL; s = s->next)
223 switch (s->header.type)
225 case lang_constructors_statement_enum:
226 lang_for_each_statement_worker (func, constructor_list.head);
228 case lang_output_section_statement_enum:
229 lang_for_each_statement_worker
231 s->output_section_statement.children.head);
233 case lang_wild_statement_enum:
234 lang_for_each_statement_worker
236 s->wild_statement.children.head);
238 case lang_data_statement_enum:
239 case lang_object_symbols_statement_enum:
240 case lang_output_statement_enum:
241 case lang_target_statement_enum:
242 case lang_input_section_enum:
243 case lang_input_statement_enum:
244 case lang_assignment_statement_enum:
245 case lang_padding_statement_enum:
246 case lang_address_statement_enum:
256 lang_for_each_statement (func)
257 void (*func) PARAMS ((lang_statement_union_type *));
259 lang_for_each_statement_worker (func,
260 statement_list.head);
263 /*----------------------------------------------------------------------*/
265 lang_list_init (list)
266 lang_statement_list_type *list;
268 list->head = (lang_statement_union_type *) NULL;
269 list->tail = &list->head;
272 /*----------------------------------------------------------------------
274 build a new statement node for the parse tree
279 lang_statement_union_type *
280 new_statement (type, size, list)
281 enum statement_enum type;
283 lang_statement_list_type * list;
285 lang_statement_union_type *new = (lang_statement_union_type *)
288 new->header.type = type;
289 new->header.next = (lang_statement_union_type *) NULL;
290 lang_statement_append (list, new, &new->header.next);
295 Build a new input file node for the language. There are several ways
296 in which we treat an input file, eg, we only look at symbols, or
297 prefix it with a -l etc.
299 We can be supplied with requests for input files more than once;
300 they may, for example be split over serveral lines like foo.o(.text)
301 foo.o(.data) etc, so when asked for a file we check that we havn't
302 got it already so we don't duplicate the bfd.
305 static lang_input_statement_type *
306 new_afile (name, file_type, target)
308 lang_input_file_enum_type file_type;
312 lang_input_statement_type *p = new_stat (lang_input_statement,
315 lang_has_input_file = true;
317 p->complained = false;
320 case lang_input_file_is_symbols_only_enum:
322 p->is_archive = false;
324 p->local_sym_name = name;
325 p->just_syms_flag = true;
326 p->search_dirs_flag = false;
328 case lang_input_file_is_fake_enum:
330 p->is_archive = false;
332 p->local_sym_name = name;
333 p->just_syms_flag = false;
334 p->search_dirs_flag = false;
336 case lang_input_file_is_l_enum:
337 p->is_archive = true;
340 p->local_sym_name = concat ("-l", name, "");
341 p->just_syms_flag = false;
342 p->search_dirs_flag = true;
344 case lang_input_file_is_search_file_enum:
345 case lang_input_file_is_marker_enum:
347 p->is_archive = false;
349 p->local_sym_name = name;
350 p->just_syms_flag = false;
351 p->search_dirs_flag = true;
353 case lang_input_file_is_file_enum:
355 p->is_archive = false;
357 p->local_sym_name = name;
358 p->just_syms_flag = false;
359 p->search_dirs_flag = false;
364 p->asymbols = (asymbol **) NULL;
365 p->superfile = (lang_input_statement_type *) NULL;
366 p->next_real_file = (lang_statement_union_type *) NULL;
367 p->next = (lang_statement_union_type *) NULL;
369 p->common_output_section = (asection *) NULL;
371 lang_statement_append (&input_file_chain,
372 (lang_statement_union_type *) p,
377 lang_input_statement_type *
378 lang_add_input_file (name, file_type, target)
380 lang_input_file_enum_type file_type;
383 /* Look it up or build a new one */
384 lang_has_input_file = true;
387 lang_input_statement_type *p;
389 for (p = (lang_input_statement_type *) input_file_chain.head;
390 p != (lang_input_statement_type *) NULL;
391 p = (lang_input_statement_type *) (p->next_real_file))
393 /* Sometimes we have incomplete entries in here */
394 if (p->filename != (char *) NULL)
396 if (strcmp (name, p->filename) == 0)
402 return new_afile (name, file_type, target);
405 /* Build enough state so that the parser can build its tree */
409 obstack_begin (&stat_obstack, 1000);
411 stat_ptr = &statement_list;
413 lang_list_init (stat_ptr);
415 lang_list_init (&input_file_chain);
416 lang_list_init (&lang_output_section_statement);
417 lang_list_init (&file_chain);
418 first_file = lang_add_input_file ((char *) NULL,
419 lang_input_file_is_marker_enum,
421 abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
423 abs_output_section->bfd_section = &bfd_abs_section;
427 /*----------------------------------------------------------------------
428 A region is an area of memory declared with the
429 MEMORY { name:org=exp, len=exp ... }
432 We maintain a list of all the regions here
434 If no regions are specified in the script, then the default is used
435 which is created when looked up to be the entire data space
438 static lang_memory_region_type *lang_memory_region_list;
439 static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list;
441 lang_memory_region_type *
442 lang_memory_region_lookup (name)
443 CONST char *CONST name;
446 lang_memory_region_type *p = lang_memory_region_list;
448 for (p = lang_memory_region_list;
449 p != (lang_memory_region_type *) NULL;
452 if (strcmp (p->name, name) == 0)
457 if (strcmp (name, "*default*") == 0)
459 /* This is the default region, dig out first one on the list */
460 if (lang_memory_region_list != (lang_memory_region_type *) NULL)
462 return lang_memory_region_list;
466 lang_memory_region_type *new =
467 (lang_memory_region_type *) stat_alloc ((bfd_size_type) (sizeof (lang_memory_region_type)));
469 new->name = buystring (name);
470 new->next = (lang_memory_region_type *) NULL;
472 *lang_memory_region_list_tail = new;
473 lang_memory_region_list_tail = &new->next;
475 new->length = ~(bfd_size_type)0;
477 new->had_full_message = false;
484 lang_output_section_statement_type *
485 lang_output_section_find (name)
486 CONST char *CONST name;
488 lang_statement_union_type *u;
489 lang_output_section_statement_type *lookup;
491 for (u = lang_output_section_statement.head;
492 u != (lang_statement_union_type *) NULL;
495 lookup = &u->output_section_statement;
496 if (strcmp (name, lookup->name) == 0)
501 return (lang_output_section_statement_type *) NULL;
504 lang_output_section_statement_type *
505 lang_output_section_statement_lookup (name)
506 CONST char *CONST name;
508 lang_output_section_statement_type *lookup;
510 lookup = lang_output_section_find (name);
511 if (lookup == (lang_output_section_statement_type *) NULL)
514 lookup = (lang_output_section_statement_type *)
515 new_stat (lang_output_section_statement, stat_ptr);
516 lookup->region = (lang_memory_region_type *) NULL;
518 lookup->block_value = 1;
521 lookup->next = (lang_statement_union_type *) NULL;
522 lookup->bfd_section = (asection *) NULL;
523 lookup->processed = false;
524 lookup->loadable = 1;
525 lookup->addr_tree = (etree_type *) NULL;
526 lang_list_init (&lookup->children);
528 lookup->memspec = (CONST char *) NULL;
530 lookup->subsection_alignment = -1;
531 lookup->section_alignment = -1;
532 lookup->load_base = (union etree_union *) NULL;
534 lang_statement_append (&lang_output_section_statement,
535 (lang_statement_union_type *) lookup,
543 print_flags (ignore_flags)
546 fprintf (config.map_file, "(");
548 if (flags->flag_read)
549 fprintf (outfile, "R");
550 if (flags->flag_write)
551 fprintf (outfile, "W");
552 if (flags->flag_executable)
553 fprintf (outfile, "X");
554 if (flags->flag_loadable)
555 fprintf (outfile, "L");
557 fprintf (config.map_file, ")");
563 lang_memory_region_type *m;
565 fprintf (config.map_file, "**MEMORY CONFIGURATION**\n\n");
567 fprintf (config.map_file, "name\t\torigin\t\tlength\t\tattributes\n");
569 fprintf (config.map_file,
570 "name\t\torigin length r_size c_size is attributes\n");
573 for (m = lang_memory_region_list;
574 m != (lang_memory_region_type *) NULL;
577 fprintf (config.map_file, "%-16s", m->name);
578 print_address (m->origin);
580 print_address ((bfd_vma)m->length);
582 print_address ((bfd_vma)m->old_length);
584 print_address (m->current - m->origin);
587 fprintf (config.map_file, " %2d%% ",
588 (int) ((m->current - m->origin) * 100 / m->old_length));
589 print_flags (&m->flags);
590 fprintf (config.map_file, "\n");
592 fprintf (config.map_file, "\n\n**LINK EDITOR MEMORY MAP**\n\n");
593 fprintf (config.map_file, "output input virtual\n");
594 fprintf (config.map_file, "section section address tsize\n\n");
605 lang_output_section_statement_type * s;
607 /* asection *section = bfd_get_section_by_name(output_bfd, s->name);*/
608 section_userdata_type *new =
609 (section_userdata_type *)
610 stat_alloc ((bfd_size_type) (sizeof (section_userdata_type)));
612 s->bfd_section = bfd_get_section_by_name (output_bfd, s->name);
613 if (s->bfd_section == (asection *) NULL)
614 s->bfd_section = bfd_make_section (output_bfd, s->name);
615 if (s->bfd_section == (asection *) NULL)
617 einfo ("%P%F: output format %s cannot represent section called %s\n",
618 output_bfd->xvec->name, s->name);
620 s->bfd_section->output_section = s->bfd_section;
621 /* s->bfd_section->flags = s->flags;*/
623 /* We initialize an output sections output offset to minus its own */
624 /* vma to allow us to output a section through itself */
625 s->bfd_section->output_offset = 0;
626 get_userdata (s->bfd_section) = (PTR) new;
630 /***********************************************************************
633 These expand statements like *(.text) and foo.o to a list of
634 explicit actions, like foo.o(.text), bar.o(.text) and
637 The toplevel routine, wild, takes a statement, section, file and
638 target. If either the section or file is null it is taken to be the
639 wildcard. Seperate lang_input_section statements are created for
640 each part of the expanstion, and placed after the statement provided.
645 wild_doit (ptr, section, output, file)
646 lang_statement_list_type * ptr;
648 lang_output_section_statement_type * output;
649 lang_input_statement_type * file;
651 if (output->bfd_section == (asection *) NULL)
654 /* Initialize the vma and size to the existing section. This will
655 be overriden in lang_size_sections unless SEC_NEVER_LOAD gets
657 if (section != (asection *) NULL)
659 bfd_set_section_vma (0, output->bfd_section,
660 bfd_section_vma (0, section));
661 output->bfd_section->_raw_size = section->_raw_size;
665 if (section != (asection *) NULL
666 && section->output_section == (asection *) NULL)
668 /* Add a section reference to the list */
669 lang_input_section_type *new = new_stat (lang_input_section, ptr);
671 new->section = section;
673 section->output_section = output->bfd_section;
675 /* Be selective about what the output section inherits from the
678 if ((section->flags & SEC_SHARED_LIBRARY) != 0)
679 section->output_section->flags |= section->flags;
681 section->output_section->flags |=
682 section->flags & (flagword) (~ SEC_NEVER_LOAD);
684 if (!output->loadable)
686 /* Turn off load flag */
687 output->bfd_section->flags &= ~SEC_LOAD;
688 output->bfd_section->flags |= SEC_NEVER_LOAD;
690 if (section->alignment_power > output->bfd_section->alignment_power)
692 output->bfd_section->alignment_power = section->alignment_power;
694 /* If supplied an aligmnet, then force it */
695 if (output->section_alignment != -1)
697 output->bfd_section->alignment_power = output->section_alignment;
703 our_bfd_get_section_by_name (abfd, section)
707 return bfd_get_section_by_name (abfd, section);
711 wild_section (ptr, section, file, output)
712 lang_wild_statement_type * ptr;
714 lang_input_statement_type * file;
715 lang_output_section_statement_type * output;
719 if (file->just_syms_flag == false)
721 if (section == (char *) NULL)
723 /* Do the creation to all sections in the file */
724 for (s = file->the_bfd->sections; s != (asection *) NULL; s = s->next)
727 if ((s->flags & SEC_IS_COMMON) == 0)
729 wild_doit (&ptr->children, s, output, file);
735 /* Do the creation to the named section only */
736 wild_doit (&ptr->children,
737 our_bfd_get_section_by_name (file->the_bfd, section),
743 /* passed a file name (which must have been seen already and added to
744 the statement tree. We will see if it has been opened already and
745 had its symbols read. If not then we'll read it.
747 Archives are pecuilar here. We may open them once, but if they do
748 not define anything we need at the time, they won't have all their
749 symbols read. If we need them later, we'll have to redo it.
752 lang_input_statement_type *
756 lang_input_statement_type *search;
758 for (search = (lang_input_statement_type *) input_file_chain.head;
759 search != (lang_input_statement_type *) NULL;
760 search = (lang_input_statement_type *) search->next_real_file)
762 if (search->filename == (char *) NULL && name == (char *) NULL)
764 if (search->filename != (char *) NULL
765 && name != (char *) NULL
766 && strcmp (search->filename, name) == 0)
770 if (search == (lang_input_statement_type *) NULL)
772 /* There isn't an afile entry for this file yet, this must be
773 because the name has only appeared inside a load script and
774 not on the command line */
775 search = new_afile (name, lang_input_file_is_file_enum, default_target);
778 /* If we have already added this file, or this file is not real
779 (FIXME: can that ever actually happen?) or the name is NULL
780 (FIXME: can that ever actually happen?) don't add this file. */
783 || search->filename == (const char *) NULL)
786 ldfile_open_file (search);
788 if (bfd_check_format (search->the_bfd, bfd_object))
790 ldlang_add_file (search);
791 if (trace_files || trace_file_tries)
792 info_msg ("%I\n", search);
794 else if (bfd_check_format (search->the_bfd, bfd_archive))
796 /* There is nothing to do here; the add_symbols routine will
797 call ldlang_add_file (via the add_archive_element callback)
798 for each element of the archive which is used. */
801 einfo ("%F%B: file not recognized: %E\n", search->the_bfd);
803 bfd_set_gp_size (search->the_bfd, g_switch_value);
805 if (bfd_link_add_symbols (search->the_bfd, &link_info) == false)
806 einfo ("%F%B: could not read symbols: %E\n", search->the_bfd);
808 search->loaded = true;
814 wild (s, section, file, target, output)
815 lang_wild_statement_type * s;
819 lang_output_section_statement_type * output;
821 lang_input_statement_type *f;
823 if (file == (char *) NULL)
825 /* Perform the iteration over all files in the list */
826 for (f = (lang_input_statement_type *) file_chain.head;
827 f != (lang_input_statement_type *) NULL;
828 f = (lang_input_statement_type *) f->next)
830 wild_section (s, section, f, output);
835 /* Perform the iteration over a single file */
836 wild_section (s, section, lookup_name (file), output);
838 if (section != (char *) NULL
839 && strcmp (section, "COMMON") == 0
840 && default_common_section == (lang_output_section_statement_type *) NULL)
842 /* Remember the section that common is going to incase we later
843 get something which doesn't know where to put it */
844 default_common_section = output;
849 read in all the files
858 if (output_target == (char *) NULL)
860 if (current_target != (char *) NULL)
861 output_target = current_target;
863 output_target = default_target;
865 output = bfd_openw (name, output_target);
867 if (output == (bfd *) NULL)
869 if (bfd_error == invalid_target)
871 einfo ("%P%F: target %s not found\n", output_target);
873 einfo ("%P%F: cannot open output file %s: %E\n", name);
876 delete_output_file_on_failure = 1;
878 /* output->flags |= D_PAGED;*/
880 if (! bfd_set_format (output, bfd_object))
881 einfo ("%P%F:%s: can not make object file: %E\n", name);
882 if (! bfd_set_arch_mach (output,
883 ldfile_output_architecture,
884 ldfile_output_machine))
885 einfo ("%P%F:%s: can not set architecture: %E\n", name);
887 link_info.hash = bfd_link_hash_table_create (output);
888 if (link_info.hash == (struct bfd_link_hash_table *) NULL)
889 einfo ("%P%F: can not create link hash table: %E\n");
891 bfd_set_gp_size (output, g_switch_value);
899 ldlang_open_output (statement)
900 lang_statement_union_type * statement;
902 switch (statement->header.type)
904 case lang_output_statement_enum:
905 ASSERT (output_bfd == (bfd *) NULL);
906 output_bfd = open_output (statement->output_statement.name);
907 ldemul_set_output_arch ();
908 if (config.magic_demand_paged && !link_info.relocateable)
909 output_bfd->flags |= D_PAGED;
911 output_bfd->flags &= ~D_PAGED;
912 if (config.text_read_only)
913 output_bfd->flags |= WP_TEXT;
915 output_bfd->flags &= ~WP_TEXT;
918 case lang_target_statement_enum:
919 current_target = statement->target_statement.target;
927 open_input_bfds (statement)
928 lang_statement_union_type * statement;
930 switch (statement->header.type)
932 case lang_target_statement_enum:
933 current_target = statement->target_statement.target;
935 case lang_wild_statement_enum:
936 /* Maybe we should load the file's symbols */
937 if (statement->wild_statement.filename)
939 (void) lookup_name (statement->wild_statement.filename);
942 case lang_input_statement_enum:
943 if (statement->input_statement.real == true)
945 statement->input_statement.target = current_target;
946 lookup_name (statement->input_statement.filename);
954 /* If there are [COMMONS] statements, put a wild one into the bss section */
957 lang_reasonable_defaults ()
960 lang_output_section_statement_lookup (".text");
961 lang_output_section_statement_lookup (".data");
963 default_common_section =
964 lang_output_section_statement_lookup (".bss");
967 if (placed_commons == false)
969 lang_wild_statement_type *new =
970 new_stat (lang_wild_statement,
971 &default_common_section->children);
973 new->section_name = "COMMON";
974 new->filename = (char *) NULL;
975 lang_list_init (&new->children);
982 Add the supplied name to the symbol table as an undefined reference.
983 Remove items from the chain as we open input bfds
985 typedef struct ldlang_undef_chain_list
987 struct ldlang_undef_chain_list *next;
989 } ldlang_undef_chain_list_type;
991 static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head;
994 ldlang_add_undef (name)
995 CONST char *CONST name;
997 ldlang_undef_chain_list_type *new =
998 (ldlang_undef_chain_list_type
999 *) stat_alloc ((bfd_size_type) (sizeof (ldlang_undef_chain_list_type)));
1001 new->next = ldlang_undef_chain_list_head;
1002 ldlang_undef_chain_list_head = new;
1004 new->name = buystring (name);
1007 /* Run through the list of undefineds created above and place them
1008 into the linker hash table as undefined symbols belonging to the
1012 lang_place_undefineds ()
1014 ldlang_undef_chain_list_type *ptr;
1016 for (ptr = ldlang_undef_chain_list_head;
1017 ptr != (ldlang_undef_chain_list_type *) NULL;
1020 struct bfd_link_hash_entry *h;
1022 h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true);
1023 if (h == (struct bfd_link_hash_entry *) NULL)
1024 einfo ("%P%F: bfd_link_hash_lookup failed: %E");
1025 if (h->type == bfd_link_hash_new)
1027 h->type = bfd_link_hash_undefined;
1028 h->u.undef.abfd = NULL;
1029 bfd_link_add_undef (link_info.hash, h);
1034 /* Copy important data from out internal form to the bfd way. Also
1035 create a section for the dummy file
1039 lang_create_output_section_statements ()
1041 lang_statement_union_type *os;
1043 for (os = lang_output_section_statement.head;
1044 os != (lang_statement_union_type *) NULL;
1045 os = os->output_section_statement.next)
1047 lang_output_section_statement_type *s =
1048 &os->output_section_statement;
1055 /* Open input files and attatch to output sections */
1057 map_input_to_output_sections (s, target, output_section_statement)
1058 lang_statement_union_type * s;
1060 lang_output_section_statement_type * output_section_statement;
1062 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1064 switch (s->header.type)
1068 case lang_wild_statement_enum:
1069 wild (&s->wild_statement, s->wild_statement.section_name,
1070 s->wild_statement.filename, target,
1071 output_section_statement);
1074 case lang_constructors_statement_enum:
1075 map_input_to_output_sections (constructor_list.head,
1077 output_section_statement);
1079 case lang_output_section_statement_enum:
1080 map_input_to_output_sections (s->output_section_statement.children.head,
1082 &s->output_section_statement);
1084 case lang_output_statement_enum:
1086 case lang_target_statement_enum:
1087 target = s->target_statement.target;
1089 case lang_fill_statement_enum:
1090 case lang_input_section_enum:
1091 case lang_object_symbols_statement_enum:
1092 case lang_data_statement_enum:
1093 case lang_assignment_statement_enum:
1094 case lang_padding_statement_enum:
1096 case lang_afile_asection_pair_statement_enum:
1099 case lang_address_statement_enum:
1100 /* Mark the specified section with the supplied address */
1102 lang_output_section_statement_type *os =
1103 lang_output_section_statement_lookup
1104 (s->address_statement.section_name);
1106 os->addr_tree = s->address_statement.address;
1107 if (os->bfd_section == (asection *) NULL)
1109 einfo ("%P%F: cannot set the address of undefined section %s\n",
1110 s->address_statement.section_name);
1114 case lang_input_statement_enum:
1115 /* A standard input statement, has no wildcards */
1122 print_output_section_statement (output_section_statement)
1123 lang_output_section_statement_type * output_section_statement;
1125 asection *section = output_section_statement->bfd_section;
1128 print_section (output_section_statement->name);
1133 print_dot = section->vma;
1137 print_address (section->vma);
1139 print_size (section->_raw_size);
1141 print_size(section->_cooked_size);
1143 print_alignment (section->alignment_power);
1146 fprintf (config.map_file, "%s flags", output_section_statement->region->name);
1147 print_flags (stdout, &output_section_statement->flags);
1149 if (section->flags & SEC_LOAD)
1150 fprintf (config.map_file, "load ");
1151 if (section->flags & SEC_ALLOC)
1152 fprintf (config.map_file, "alloc ");
1153 if (section->flags & SEC_RELOC)
1154 fprintf (config.map_file, "reloc ");
1155 if (section->flags & SEC_HAS_CONTENTS)
1156 fprintf (config.map_file, "contents ");
1161 fprintf (config.map_file, "No attached output section");
1164 if (output_section_statement->load_base)
1166 int b = exp_get_value_int(output_section_statement->load_base,
1167 0, "output base", lang_final_phase_enum);
1168 printf("Output address %08x\n", b);
1170 if (output_section_statement->section_alignment >= 0
1171 || output_section_statement->section_alignment >= 0)
1173 printf("\t\t\t\t\tforced alignment ");
1174 if ( output_section_statement->section_alignment >= 0)
1176 printf("section 2**%d ",output_section_statement->section_alignment );
1178 if ( output_section_statement->subsection_alignment >= 0)
1180 printf("subsection 2**%d ",output_section_statement->subsection_alignment );
1185 print_statement (output_section_statement->children.head,
1186 output_section_statement);
1191 print_assignment (assignment, output_section)
1192 lang_assignment_statement_type * assignment;
1193 lang_output_section_statement_type * output_section;
1195 etree_value_type result;
1201 print_address (print_dot);
1203 result = exp_fold_tree (assignment->exp->assign.src,
1205 lang_final_phase_enum,
1211 print_address (result.value);
1215 fprintf (config.map_file, "*undefined*");
1218 exp_print_tree (assignment->exp);
1220 fprintf (config.map_file, "\n");
1224 print_input_statement (statm)
1225 lang_input_statement_type * statm;
1227 if (statm->filename != (char *) NULL)
1229 fprintf (config.map_file, "LOAD %s\n", statm->filename);
1233 /* Print all the defined symbols for the abfd provided by in the supplied
1238 print_one_symbol (hash_entry, ptr)
1239 struct bfd_link_hash_entry *hash_entry;
1242 asection * sec = (asection *)ptr;
1244 if (hash_entry->type == bfd_link_hash_defined)
1246 if (sec == hash_entry->u.def.section) {
1248 fprintf (config.map_file, " ");
1250 fprintf (config.map_file, " ");
1251 print_address (hash_entry->u.def.value + outside_section_address (sec));
1252 fprintf (config.map_file, " %s", hash_entry->root.string);
1259 print_input_section (in)
1260 lang_input_section_type * in;
1262 asection *i = in->section;
1263 int size = i->reloc_done ?
1264 bfd_get_section_size_after_reloc (i) :
1265 bfd_get_section_size_before_reloc (i);
1270 fprintf (config.map_file, " ");
1271 print_section (i->name);
1272 fprintf (config.map_file, " ");
1273 if (i->output_section)
1275 print_address (i->output_section->vma + i->output_offset);
1276 fprintf (config.map_file, " ");
1277 print_size (i->_raw_size);
1278 fprintf (config.map_file, " ");
1279 print_size(i->_cooked_size);
1280 fprintf (config.map_file, " ");
1281 print_alignment (i->alignment_power);
1282 fprintf (config.map_file, " ");
1286 bfd *abfd = in->ifile->the_bfd;
1288 if (in->ifile->just_syms_flag == true)
1290 fprintf (config.map_file, "symbols only ");
1293 fprintf (config.map_file, " %s ", abfd->xvec->name);
1294 if (abfd->my_archive != (bfd *) NULL)
1296 fprintf (config.map_file, "[%s]%s", abfd->my_archive->filename,
1301 fprintf (config.map_file, "%s", abfd->filename);
1303 fprintf (config.map_file, "(overhead %d bytes)", (int) bfd_alloc_size (abfd));
1306 /* Print all the symbols */
1307 bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i);
1315 print_dot = outside_section_address (i) + size;
1319 fprintf (config.map_file, "No output section allocated\n");
1325 print_fill_statement (fill)
1326 lang_fill_statement_type * fill;
1328 fprintf (config.map_file, "FILL mask ");
1329 print_fill (fill->fill);
1333 print_data_statement (data)
1334 lang_data_statement_type * data;
1336 /* bfd_vma value; */
1341 /* ASSERT(print_dot == data->output_vma);*/
1343 print_address (data->output_vma + data->output_section->vma);
1345 print_address (data->value);
1350 fprintf (config.map_file, "BYTE ");
1351 print_dot += BYTE_SIZE;
1354 fprintf (config.map_file, "SHORT ");
1355 print_dot += SHORT_SIZE;
1358 fprintf (config.map_file, "LONG ");
1359 print_dot += LONG_SIZE;
1362 fprintf (config.map_file, "QUAD ");
1363 print_dot += QUAD_SIZE;
1367 exp_print_tree (data->exp);
1369 fprintf (config.map_file, "\n");
1374 print_padding_statement (s)
1375 lang_padding_statement_type * s;
1379 print_section ("*fill*");
1381 print_address (s->output_offset + s->output_section->vma);
1383 print_size (s->size);
1385 print_fill (s->fill);
1388 print_dot = s->output_offset + s->output_section->vma + s->size;
1393 print_wild_statement (w, os)
1394 lang_wild_statement_type * w;
1395 lang_output_section_statement_type * os;
1397 fprintf (config.map_file, " from ");
1398 if (w->filename != (char *) NULL)
1400 fprintf (config.map_file, "%s", w->filename);
1404 fprintf (config.map_file, "*");
1406 if (w->section_name != (char *) NULL)
1408 fprintf (config.map_file, "(%s)", w->section_name);
1412 fprintf (config.map_file, "(*)");
1415 print_statement (w->children.head, os);
1419 print_statement (s, os)
1420 lang_statement_union_type * s;
1421 lang_output_section_statement_type * os;
1425 switch (s->header.type)
1427 case lang_constructors_statement_enum:
1428 fprintf (config.map_file, "constructors:\n");
1429 print_statement (constructor_list.head, os);
1431 case lang_wild_statement_enum:
1432 print_wild_statement (&s->wild_statement, os);
1435 fprintf (config.map_file, "Fail with %d\n", s->header.type);
1438 case lang_address_statement_enum:
1439 fprintf (config.map_file, "address\n");
1441 case lang_object_symbols_statement_enum:
1442 fprintf (config.map_file, "object symbols\n");
1444 case lang_fill_statement_enum:
1445 print_fill_statement (&s->fill_statement);
1447 case lang_data_statement_enum:
1448 print_data_statement (&s->data_statement);
1450 case lang_input_section_enum:
1451 print_input_section (&s->input_section);
1453 case lang_padding_statement_enum:
1454 print_padding_statement (&s->padding_statement);
1456 case lang_output_section_statement_enum:
1457 print_output_section_statement (&s->output_section_statement);
1459 case lang_assignment_statement_enum:
1460 print_assignment (&s->assignment_statement,
1463 case lang_target_statement_enum:
1464 fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
1466 case lang_output_statement_enum:
1467 fprintf (config.map_file, "OUTPUT(%s %s)\n",
1468 s->output_statement.name,
1469 output_target ? output_target : "");
1471 case lang_input_statement_enum:
1472 print_input_statement (&s->input_statement);
1474 case lang_afile_asection_pair_statement_enum:
1486 print_statement (statement_list.head,
1487 abs_output_section);
1492 insert_pad (this_ptr, fill, power, output_section_statement, dot)
1493 lang_statement_union_type ** this_ptr;
1496 asection * output_section_statement;
1499 /* Align this section first to the
1500 input sections requirement, then
1501 to the output section's requirement.
1502 If this alignment is > than any seen before,
1503 then record it too. Perform the alignment by
1504 inserting a magic 'padding' statement.
1507 unsigned int alignment_needed = align_power (dot, power) - dot;
1509 if (alignment_needed != 0)
1511 lang_statement_union_type *new =
1512 (lang_statement_union_type *)
1513 stat_alloc ((bfd_size_type) (sizeof (lang_padding_statement_type)));
1515 /* Link into existing chain */
1516 new->header.next = *this_ptr;
1518 new->header.type = lang_padding_statement_enum;
1519 new->padding_statement.output_section = output_section_statement;
1520 new->padding_statement.output_offset =
1521 dot - output_section_statement->vma;
1522 new->padding_statement.fill = fill;
1523 new->padding_statement.size = alignment_needed;
1527 /* Remember the most restrictive alignment */
1528 if (power > output_section_statement->alignment_power)
1530 output_section_statement->alignment_power = power;
1532 output_section_statement->_raw_size += alignment_needed;
1533 return alignment_needed + dot;
1537 /* Work out how much this section will move the dot point */
1539 size_input_section (this_ptr, output_section_statement, fill, dot, relax)
1540 lang_statement_union_type ** this_ptr;
1541 lang_output_section_statement_type * output_section_statement;
1546 lang_input_section_type *is = &((*this_ptr)->input_section);
1547 asection *i = is->section;
1549 if (is->ifile->just_syms_flag == false)
1551 if (output_section_statement->subsection_alignment != -1)
1552 i->alignment_power =
1553 output_section_statement->subsection_alignment;
1555 dot = insert_pad (this_ptr, fill, i->alignment_power,
1556 output_section_statement->bfd_section, dot);
1558 /* remember the largest size so we can malloc the largest area
1559 needed for the output stage. Only remember the size of sections
1560 which we will actually allocate */
1561 if ((i->flags & SEC_HAS_CONTENTS) != 0
1562 && (bfd_get_section_size_before_reloc (i) > largest_section))
1564 largest_section = bfd_get_section_size_before_reloc (i);
1567 /* Remember where in the output section this input section goes */
1569 i->output_offset = dot - output_section_statement->bfd_section->vma;
1571 /* Mark how big the output section must be to contain this now
1575 dot += i->_cooked_size;
1579 dot += i->_raw_size;
1581 output_section_statement->bfd_section->_raw_size = dot - output_section_statement->bfd_section->vma;
1585 i->output_offset = i->vma - output_section_statement->bfd_section->vma;
1591 /* Sizing happens in two passes, first pass we allocate worst case
1592 stuff. The second pass (if relaxing), we use what we learnt to
1593 change the size of some relocs from worst case to better
1595 static boolean had_relax;
1598 lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
1599 lang_statement_union_type * s;
1600 lang_output_section_statement_type * output_section_statement;
1601 lang_statement_union_type ** prev;
1606 /* Size up the sections from their constituent parts */
1607 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1609 switch (s->header.type)
1612 case lang_output_section_statement_enum:
1615 lang_output_section_statement_type *os = &s->output_section_statement;
1617 /* If this is a shared library section, don't change the size
1619 if (os->bfd_section->flags & SEC_SHARED_LIBRARY)
1622 if (os->bfd_section == &bfd_abs_section)
1624 /* No matter what happens, an abs section starts at zero */
1625 bfd_set_section_vma (0, os->bfd_section, 0);
1629 if (os->addr_tree == (etree_type *) NULL)
1631 /* No address specified for this section, get one
1632 from the region specification
1634 if (os->region == (lang_memory_region_type *) NULL)
1636 os->region = lang_memory_region_lookup ("*default*");
1638 dot = os->region->current;
1644 r = exp_fold_tree (os->addr_tree,
1646 lang_allocating_phase_enum,
1648 if (r.valid == false)
1650 einfo ("%F%S: non constant address expression for section %s\n",
1655 /* The section starts here */
1656 /* First, align to what the section needs */
1659 dot = align_power (dot, os->bfd_section->alignment_power);
1660 bfd_set_section_vma (0, os->bfd_section, dot);
1662 if (os->load_base) {
1663 os->bfd_section->lma
1664 = exp_get_value_int(os->load_base, 0,"load base", lang_final_phase_enum);
1669 os->bfd_section->output_offset = 0;
1671 (void) lang_size_sections (os->children.head, os, &os->children.head,
1672 os->fill, dot, relax);
1673 /* Ignore the size of the input sections, use the vma and size to */
1676 after = ALIGN_N (os->bfd_section->vma +
1677 os->bfd_section->_raw_size,
1678 /* The coercion here is important, see ld.h. */
1679 (bfd_vma) os->block_value);
1681 os->bfd_section->_raw_size = after - os->bfd_section->vma;
1682 dot = os->bfd_section->vma + os->bfd_section->_raw_size;
1683 os->processed = true;
1685 /* Replace into region ? */
1686 if (os->addr_tree == (etree_type *) NULL
1687 && os->region != (lang_memory_region_type *) NULL)
1689 os->region->current = dot;
1690 /* Make sure this isn't silly */
1691 if (( os->region->current
1692 > os->region->origin + os->region->length)
1693 || ( os->region->origin > os->region->current ))
1695 einfo ("%X%P: region %s is full (%B section %s)\n",
1697 os->bfd_section->owner,
1698 os->bfd_section->name);
1699 /* Reset the region pointer */
1700 os->region->current = 0;
1708 case lang_constructors_statement_enum:
1709 dot = lang_size_sections (constructor_list.head,
1710 output_section_statement,
1711 &s->wild_statement.children.head,
1716 case lang_data_statement_enum:
1718 unsigned int size = 0;
1720 s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma;
1721 s->data_statement.output_section =
1722 output_section_statement->bfd_section;
1724 switch (s->data_statement.type)
1741 output_section_statement->bfd_section->_raw_size += size;
1745 case lang_wild_statement_enum:
1747 dot = lang_size_sections (s->wild_statement.children.head,
1748 output_section_statement,
1749 &s->wild_statement.children.head,
1755 case lang_object_symbols_statement_enum:
1756 link_info.create_object_symbols_section =
1757 output_section_statement->bfd_section;
1759 case lang_output_statement_enum:
1760 case lang_target_statement_enum:
1762 case lang_input_section_enum:
1765 lang_input_section_type *is;
1768 is = &(*prev)->input_section;
1771 /* FIXME: The interface to bfd_relax_section should be changed
1772 to not require the generic symbols to be read. Changing
1773 this would require changing both b_out_relax_section and
1774 bfd_coff_relax16_section. */
1775 if (is->ifile->asymbols == (asymbol **) NULL)
1777 unsigned int symsize;
1779 symsize = get_symtab_upper_bound (i->owner);
1780 is->ifile->asymbols = (asymbol **) xmalloc (symsize);
1781 is->ifile->symbol_count =
1782 bfd_canonicalize_symtab (i->owner, is->ifile->asymbols);
1784 /* The generic linker code in BFD requires that these
1785 symbols be stored in the outsymbols and symcount
1786 fields. When the bfd_relax_section is interface is
1787 fixed this should also be fixed. */
1788 i->owner->outsymbols = is->ifile->asymbols;
1789 i->owner->symcount = is->ifile->symbol_count;
1792 if (bfd_relax_section (i->owner, i, &link_info, is->ifile->asymbols))
1796 (*prev)->input_section.section->_cooked_size =
1797 (*prev)->input_section.section->_raw_size ;
1800 dot = size_input_section (prev,
1801 output_section_statement,
1802 output_section_statement->fill,
1805 case lang_input_statement_enum:
1807 case lang_fill_statement_enum:
1808 s->fill_statement.output_section = output_section_statement->bfd_section;
1810 fill = s->fill_statement.fill;
1812 case lang_assignment_statement_enum:
1814 bfd_vma newdot = dot;
1816 exp_fold_tree (s->assignment_statement.exp,
1817 output_section_statement,
1818 lang_allocating_phase_enum,
1822 if (newdot != dot && !relax)
1823 /* We've been moved ! so insert a pad */
1825 lang_statement_union_type *new =
1826 (lang_statement_union_type *)
1827 stat_alloc ((bfd_size_type) (sizeof (lang_padding_statement_type)));
1829 /* Link into existing chain */
1830 new->header.next = *prev;
1832 new->header.type = lang_padding_statement_enum;
1833 new->padding_statement.output_section =
1834 output_section_statement->bfd_section;
1835 new->padding_statement.output_offset =
1836 dot - output_section_statement->bfd_section->vma;
1837 new->padding_statement.fill = fill;
1838 new->padding_statement.size = newdot - dot;
1839 output_section_statement->bfd_section->_raw_size +=
1840 new->padding_statement.size;
1849 /* This can only get here when relaxing is turned on */
1850 case lang_padding_statement_enum:
1852 case lang_address_statement_enum:
1855 prev = &s->header.next;
1861 lang_do_assignments (s, output_section_statement, fill, dot)
1862 lang_statement_union_type * s;
1863 lang_output_section_statement_type * output_section_statement;
1867 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1869 switch (s->header.type)
1871 case lang_constructors_statement_enum:
1872 dot = lang_do_assignments (constructor_list.head,
1873 output_section_statement,
1878 case lang_output_section_statement_enum:
1880 lang_output_section_statement_type *os =
1881 &(s->output_section_statement);
1883 dot = os->bfd_section->vma;
1884 (void) lang_do_assignments (os->children.head, os, os->fill, dot);
1885 dot = os->bfd_section->vma + os->bfd_section->_raw_size;
1888 case lang_wild_statement_enum:
1890 dot = lang_do_assignments (s->wild_statement.children.head,
1891 output_section_statement,
1896 case lang_object_symbols_statement_enum:
1897 case lang_output_statement_enum:
1898 case lang_target_statement_enum:
1900 case lang_common_statement_enum:
1903 case lang_data_statement_enum:
1905 etree_value_type value;
1907 value = exp_fold_tree (s->data_statement.exp,
1909 lang_final_phase_enum, dot, &dot);
1910 s->data_statement.value = value.value;
1911 if (value.valid == false)
1912 einfo ("%F%P: invalid data statement\n");
1914 switch (s->data_statement.type)
1930 case lang_input_section_enum:
1932 asection *in = s->input_section.section;
1934 dot += bfd_get_section_size_before_reloc (in);
1938 case lang_input_statement_enum:
1940 case lang_fill_statement_enum:
1941 fill = s->fill_statement.fill;
1943 case lang_assignment_statement_enum:
1945 exp_fold_tree (s->assignment_statement.exp,
1946 output_section_statement,
1947 lang_final_phase_enum,
1953 case lang_padding_statement_enum:
1954 dot += s->padding_statement.size;
1959 case lang_address_statement_enum:
1970 struct bfd_link_hash_entry *h;
1971 boolean warn = link_info.relocateable ? false : true;
1973 if (entry_symbol == (char *) NULL)
1975 /* No entry has been specified. Look for start, but don't warn
1976 if we don't find it. */
1977 entry_symbol = "start";
1981 h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
1982 if (h != (struct bfd_link_hash_entry *) NULL
1983 && h->type == bfd_link_hash_defined)
1987 val = (h->u.def.value
1988 + bfd_get_section_vma (output_bfd,
1989 h->u.def.section->output_section)
1990 + h->u.def.section->output_offset);
1991 if (! bfd_set_start_address (output_bfd, val))
1992 einfo ("%P%F:%s: can't set start address\n", entry_symbol);
1998 /* Can't find the entry symbol. Use the first address in the
2000 ts = bfd_get_section_by_name (output_bfd, ".text");
2001 if (ts != (asection *) NULL)
2004 einfo ("%P: warning: cannot find entry symbol %s; defaulting to %V\n",
2005 entry_symbol, bfd_get_section_vma (output_bfd, ts));
2006 if (! bfd_set_start_address (output_bfd,
2007 bfd_get_section_vma (output_bfd, ts)))
2008 einfo ("%P%F: can't set start address\n");
2013 einfo ("%P: warning: cannot find entry symbol %s; not setting start address\n",
2019 /* By now we know the target architecture, and we may have an */
2020 /* ldfile_output_machine_name */
2024 lang_statement_union_type *file;
2026 unsigned long input_machine;
2027 enum bfd_architecture input_architecture;
2028 CONST bfd_arch_info_type *compatible;
2030 for (file = file_chain.head;
2031 file != (lang_statement_union_type *) NULL;
2032 file = file->input_statement.next)
2034 input_bfd = file->input_statement.the_bfd;
2036 input_machine = bfd_get_mach (input_bfd);
2037 input_architecture = bfd_get_arch (input_bfd);
2040 /* Inspect the architecture and ensure we're linking like with
2043 compatible = bfd_arch_get_compatible (input_bfd,
2048 ldfile_output_machine = compatible->mach;
2049 ldfile_output_architecture = compatible->arch;
2054 einfo ("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n",
2055 bfd_printable_name (input_bfd), input_bfd,
2056 bfd_printable_name (output_bfd));
2058 if (! bfd_set_arch_mach (output_bfd,
2061 einfo ("%P%F:%s: can't set architecture: %E\n",
2062 bfd_get_filename (output_bfd));
2068 /* Look through all the global common symbols and attach them to the
2069 correct section. The -sort-common command line switch may be used
2070 to roughly sort the entries by size. */
2075 if (link_info.relocateable
2076 && ! command_line.force_common_definition)
2079 if (! config.sort_common)
2080 bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL);
2085 for (power = 1; power <= 16; power <<= 1)
2086 bfd_link_hash_traverse (link_info.hash, lang_one_common,
2091 /* Place one common symbol in the correct section. */
2094 lang_one_common (h, info)
2095 struct bfd_link_hash_entry *h;
2098 unsigned int power_of_two;
2103 if (h->type != bfd_link_hash_common)
2136 if (config.sort_common && align != *(unsigned int *) info)
2139 section = h->u.c.section;
2141 /* Increase the size of the section. */
2142 section->_raw_size = ALIGN_N (section->_raw_size, align);
2144 /* Adjust the alignment if necessary. */
2145 if (power_of_two > section->alignment_power)
2146 section->alignment_power = power_of_two;
2148 /* Change the symbol from common to defined. */
2149 h->type = bfd_link_hash_defined;
2150 h->u.def.section = section;
2151 h->u.def.value = section->_raw_size;
2153 /* Increase the size of the section. */
2154 section->_raw_size += size;
2156 if (write_map && config.map_file != NULL)
2157 fprintf (config.map_file, "Allocating common %s: %lx at %lx %s\n",
2158 h->root.string, (unsigned long) size,
2159 (unsigned long) h->u.def.value, section->owner->filename);
2165 run through the input files and ensure that every input
2166 section has somewhere to go. If one is found without
2167 a destination then create an input request and place it
2168 into the statement tree.
2172 lang_place_orphans ()
2174 lang_input_statement_type *file;
2176 for (file = (lang_input_statement_type *) file_chain.head;
2177 file != (lang_input_statement_type *) NULL;
2178 file = (lang_input_statement_type *) file->next)
2182 for (s = file->the_bfd->sections;
2183 s != (asection *) NULL;
2186 if (s->output_section == (asection *) NULL)
2188 /* This section of the file is not attatched, root
2189 around for a sensible place for it to go */
2191 if (file->common_section == s)
2193 /* This is a lonely common section which must
2194 have come from an archive. We attatch to the
2195 section with the wildcard */
2196 if (! link_info.relocateable
2197 && ! command_line.force_common_definition)
2199 if (default_common_section ==
2200 (lang_output_section_statement_type *) NULL)
2202 info_msg ("%P: no [COMMON] command, defaulting to .bss\n");
2204 default_common_section =
2205 lang_output_section_statement_lookup (".bss");
2208 wild_doit (&default_common_section->children, s,
2209 default_common_section, file);
2214 lang_output_section_statement_type *os =
2215 lang_output_section_statement_lookup (s->name);
2217 wild_doit (&os->children, s, os, file);
2226 lang_set_flags (ptr, flags)
2230 boolean state = false;
2245 /* ptr->flag_read = state; */
2248 /* ptr->flag_write = state; */
2251 /* ptr->flag_executable= state;*/
2255 /* ptr->flag_loadable= state;*/
2258 einfo ("%P%F: invalid syntax in flags\n");
2268 lang_for_each_file (func)
2269 void (*func) PARAMS ((lang_input_statement_type *));
2271 lang_input_statement_type *f;
2273 for (f = (lang_input_statement_type *) file_chain.head;
2274 f != (lang_input_statement_type *) NULL;
2275 f = (lang_input_statement_type *) f->next)
2286 lang_for_each_input_section (func)
2287 void (*func) PARAMS ((bfd * ab, asection * as));
2289 lang_input_statement_type *f;
2291 for (f = (lang_input_statement_type *) file_chain.head;
2292 f != (lang_input_statement_type *) NULL;
2293 f = (lang_input_statement_type *) f->next)
2297 for (s = f->the_bfd->sections;
2298 s != (asection *) NULL;
2301 func (f->the_bfd, s);
2309 ldlang_add_file (entry)
2310 lang_input_statement_type * entry;
2314 lang_statement_append (&file_chain,
2315 (lang_statement_union_type *) entry,
2318 /* The BFD linker needs to have a list of all input BFDs involved in
2320 ASSERT (entry->the_bfd->link_next == (bfd *) NULL);
2321 ASSERT (entry->the_bfd != output_bfd);
2322 for (pp = &link_info.input_bfds;
2323 *pp != (bfd *) NULL;
2324 pp = &(*pp)->link_next)
2326 *pp = entry->the_bfd;
2327 entry->the_bfd->usrdata = (PTR) entry;
2331 lang_add_output (name, from_script)
2335 /* Make -o on command line override OUTPUT in script. */
2336 if (had_output_filename == false || !from_script)
2338 output_filename = name;
2339 had_output_filename = true;
2344 static lang_output_section_statement_type *current_section;
2346 static int topower(x)
2351 if (x < 0) return -1;
2352 for (l = 0; l < 32; l++)
2354 if (i >= x) return l;
2360 lang_enter_output_section_statement (output_section_statement_name,
2361 address_exp, flags, block_value,
2362 align, subalign, ebase)
2363 const char *output_section_statement_name;
2364 etree_type * address_exp;
2366 bfd_vma block_value;
2368 etree_type *subalign;
2371 lang_output_section_statement_type *os;
2375 lang_output_section_statement_lookup (output_section_statement_name);
2379 /* Add this statement to tree */
2380 /* add_statement(lang_output_section_statement_enum,
2381 output_section_statement);*/
2382 /* Make next things chain into subchain of this */
2384 if (os->addr_tree ==
2385 (etree_type *) NULL)
2391 if (flags & SEC_NEVER_LOAD)
2395 os->block_value = block_value ? block_value : 1;
2396 stat_ptr = &os->children;
2398 os->subsection_alignment = topower(
2399 exp_get_value_int(subalign, -1,
2400 "subsection alignment",
2402 os->section_alignment = topower(
2403 exp_get_value_int(align, -1,
2404 "section alignment", 0));
2406 os->load_base = ebase;
2413 lang_output_statement_type *new =
2414 new_stat (lang_output_statement, stat_ptr);
2416 new->name = output_filename;
2419 /* Reset the current counters in the regions */
2421 reset_memory_regions ()
2423 lang_memory_region_type *p = lang_memory_region_list;
2425 for (p = lang_memory_region_list;
2426 p != (lang_memory_region_type *) NULL;
2429 p->old_length = (bfd_size_type) (p->current - p->origin);
2430 p->current = p->origin;
2437 lang_reasonable_defaults ();
2438 current_target = default_target;
2440 lang_for_each_statement (ldlang_open_output); /* Open the output file */
2441 /* For each output section statement, create a section in the output
2443 lang_create_output_section_statements ();
2445 ldemul_create_output_section_statements ();
2447 /* Add to the hash table all undefineds on the command line */
2448 lang_place_undefineds ();
2450 /* Create a bfd for each input file */
2451 current_target = default_target;
2452 lang_for_each_statement (open_input_bfds);
2454 /* Build all sets based on the information gathered from the input
2456 ldctor_build_sets ();
2458 /* Run through the contours of the script and attatch input sections
2459 to the correct output sections
2461 map_input_to_output_sections (statement_list.head, (char *) NULL,
2462 (lang_output_section_statement_type *) NULL);
2465 /* Find any sections not attatched explicitly and handle them */
2466 lang_place_orphans ();
2468 /* Size up the common data */
2471 ldemul_before_allocation ();
2481 lang_size_sections (statement_list.head,
2482 (lang_output_section_statement_type *) NULL,
2483 &(statement_list.head), 0, (bfd_vma) 0, true);
2484 /* FIXME. Until the code in relax is fixed so that it only reads in
2485 stuff once, we cant iterate since there is no way for the linker to
2486 know what has been patched and what hasn't */
2492 /* Now run around and relax if we can */
2493 if (command_line.relax)
2495 /* First time round is a trial run to get the 'worst case'
2496 addresses of the objects if there was no relaxing. */
2497 lang_size_sections (statement_list.head,
2498 (lang_output_section_statement_type *) NULL,
2499 &(statement_list.head), 0, (bfd_vma) 0, false);
2502 reset_memory_regions ();
2504 /* Do all the assignments, now that we know the final resting
2505 places of all the symbols. */
2507 lang_do_assignments (statement_list.head,
2509 (fill_type) 0, (bfd_vma) 0);
2511 /* Perform another relax pass - this time we know where the
2512 globals are, so can make better guess. */
2513 lang_size_sections (statement_list.head,
2514 (lang_output_section_statement_type *) NULL,
2515 &(statement_list.head), 0, (bfd_vma) 0, true);
2519 /* Size up the sections. */
2520 lang_size_sections (statement_list.head,
2522 &(statement_list.head), 0, (bfd_vma) 0, false);
2525 /* See if anything special should be done now we know how big
2527 ldemul_after_allocation ();
2529 /* Do all the assignments, now that we know the final restingplaces
2530 of all the symbols */
2532 lang_do_assignments (statement_list.head,
2534 (fill_type) 0, (bfd_vma) 0);
2536 /* Make sure that we're not mixing architectures */
2545 /* DO NOT REENABLE THIS CALL. IF THIS CALL IS MADE, THE SUN4 LINKER
2546 CAN NOT BOOTSTRAP!! No, I don't know why, but don't change it
2547 unless you fix it. */
2548 /* Size up the sections. */
2549 lang_size_sections (statement_list.head,
2551 &(statement_list.head), 0, (bfd_vma) 0, false);
2557 /* EXPORTED TO YACC */
2560 lang_add_wild (section_name, filename)
2561 CONST char *CONST section_name;
2562 CONST char *CONST filename;
2564 lang_wild_statement_type *new = new_stat (lang_wild_statement,
2567 if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0)
2569 placed_commons = true;
2571 if (filename != (char *) NULL)
2573 lang_has_input_file = true;
2575 new->section_name = section_name;
2576 new->filename = filename;
2577 lang_list_init (&new->children);
2581 lang_section_start (name, address)
2583 etree_type * address;
2585 lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr);
2587 ad->section_name = name;
2588 ad->address = address;
2592 lang_add_entry (name)
2595 entry_symbol = name;
2599 lang_add_target (name)
2602 lang_target_statement_type *new = new_stat (lang_target_statement,
2618 map_option_f = true;
2629 lang_fill_statement_type *new = new_stat (lang_fill_statement,
2636 lang_add_data (type, exp)
2638 union etree_union *exp;
2641 lang_data_statement_type *new = new_stat (lang_data_statement,
2650 lang_add_assignment (exp)
2653 lang_assignment_statement_type *new = new_stat (lang_assignment_statement,
2660 lang_add_attribute (attribute)
2661 enum statement_enum attribute;
2663 new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr);
2670 if (startup_file != (char *) NULL)
2672 einfo ("%P%Fmultiple STARTUP files\n");
2674 first_file->filename = name;
2675 first_file->local_sym_name = name;
2677 startup_file = name;
2684 lang_float_flag = maybe;
2688 lang_leave_output_section_statement (fill, memspec)
2690 CONST char *memspec;
2692 current_section->fill = fill;
2693 current_section->region = lang_memory_region_lookup (memspec);
2694 stat_ptr = &statement_list;
2696 /* We remember if we are closing a .data section, since we use it to
2697 store constructors in */
2698 if (strcmp (current_section->name, ".data") == 0)
2700 end_of_data_section_statement_list = statement_list;
2706 Create an absolute symbol with the given name with the value of the
2707 address of first byte of the section named.
2709 If the symbol already exists, then do nothing.
2712 lang_abs_symbol_at_beginning_of (secname, name)
2713 const char *secname;
2716 struct bfd_link_hash_entry *h;
2718 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
2719 if (h == (struct bfd_link_hash_entry *) NULL)
2720 einfo ("%P%F: bfd_link_hash_lookup failed: %E\n");
2722 if (h->type == bfd_link_hash_new
2723 || h->type == bfd_link_hash_undefined)
2727 h->type = bfd_link_hash_defined;
2729 sec = bfd_get_section_by_name (output_bfd, secname);
2730 if (sec == (asection *) NULL)
2733 h->u.def.value = bfd_get_section_vma (output_bfd, sec);
2735 h->u.def.section = &bfd_abs_section;
2740 Create an absolute symbol with the given name with the value of the
2741 address of the first byte after the end of the section named.
2743 If the symbol already exists, then do nothing.
2746 lang_abs_symbol_at_end_of (secname, name)
2747 const char *secname;
2750 struct bfd_link_hash_entry *h;
2752 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
2753 if (h == (struct bfd_link_hash_entry *) NULL)
2754 einfo ("%P%F: bfd_link_hash_lookup failed: %E\n");
2756 if (h->type == bfd_link_hash_new
2757 || h->type == bfd_link_hash_undefined)
2761 h->type = bfd_link_hash_defined;
2763 sec = bfd_get_section_by_name (output_bfd, secname);
2764 if (sec == (asection *) NULL)
2767 h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
2768 + bfd_section_size (output_bfd, sec));
2770 h->u.def.section = &bfd_abs_section;
2775 lang_statement_append (list, element, field)
2776 lang_statement_list_type * list;
2777 lang_statement_union_type * element;
2778 lang_statement_union_type ** field;
2780 *(list->tail) = element;
2784 /* Set the output format type. -oformat overrides scripts. */
2786 lang_add_output_format (format, from_script)
2790 if (output_target == NULL || !from_script)
2791 output_target = format;