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. */
22 #include "libiberty.h"
37 static void print_statements PARAMS ((void));
38 static void print_statement PARAMS ((lang_statement_union_type *,
39 lang_output_section_statement_type *));
40 static lang_statement_union_type *new_statement PARAMS ((enum statement_enum,
42 lang_statement_list_type*));
46 static struct obstack stat_obstack;
48 #define obstack_chunk_alloc xmalloc
49 #define obstack_chunk_free free
50 static CONST char *startup_file;
51 static lang_statement_list_type input_file_chain;
53 /* Points to the last statement in the .data section, so we can add
54 stuff to the data section without pain */
55 static lang_statement_list_type end_of_data_section_statement_list;
57 static boolean placed_commons = false;
58 static lang_output_section_statement_type *default_common_section;
59 static boolean map_option_f;
60 static bfd_vma print_dot;
61 static lang_input_statement_type *first_file;
62 static lang_statement_list_type lang_output_section_statement;
63 static CONST char *current_target;
64 static CONST char *output_target;
65 static int longest_section_name = 8;
66 static lang_statement_list_type statement_list;
68 static void print_size PARAMS ((size_t value));
69 static void print_alignment PARAMS ((unsigned int value));
70 static void print_fill PARAMS ((fill_type value));
71 static void print_section PARAMS ((const char *name));
72 static void lang_for_each_statement_worker
73 PARAMS ((void (*func) (lang_statement_union_type *),
74 lang_statement_union_type *s));
75 static lang_input_statement_type *new_afile
76 PARAMS ((const char *name, lang_input_file_enum_type file_type,
77 const char *target, boolean add_to_list));
78 static void print_flags PARAMS ((int *ignore_flags));
79 static void init_os PARAMS ((lang_output_section_statement_type *s));
80 static void wild_doit PARAMS ((lang_statement_list_type *ptr,
82 lang_output_section_statement_type *output,
83 lang_input_statement_type *file));
84 static asection *our_bfd_get_section_by_name PARAMS ((bfd *abfd,
85 const char *section));
86 static void wild_section PARAMS ((lang_wild_statement_type *ptr,
88 lang_input_statement_type *file,
89 lang_output_section_statement_type *output));
90 static lang_input_statement_type *lookup_name PARAMS ((const char *name));
91 static void load_symbols PARAMS ((lang_input_statement_type *entry));
92 static void wild PARAMS ((lang_wild_statement_type *s,
93 const char *section, const char *file,
95 lang_output_section_statement_type *output));
96 static bfd *open_output PARAMS ((const char *name));
97 static void ldlang_open_output PARAMS ((lang_statement_union_type *statement));
98 static void open_input_bfds PARAMS ((lang_statement_union_type *statement));
99 static void lang_reasonable_defaults PARAMS ((void));
100 static void lang_place_undefineds PARAMS ((void));
101 static void lang_create_output_section_statements PARAMS ((void));
102 static void map_input_to_output_sections
103 PARAMS ((lang_statement_union_type *s,
105 lang_output_section_statement_type *output_section_statement));
106 static void print_output_section_statement
107 PARAMS ((lang_output_section_statement_type *output_section_statement));
108 static void print_assignment
109 PARAMS ((lang_assignment_statement_type *assignment,
110 lang_output_section_statement_type *output_section));
111 static void print_input_statement PARAMS ((lang_input_statement_type *statm));
112 static void print_input_section PARAMS ((lang_input_section_type *in));
113 static void print_fill_statement PARAMS ((lang_fill_statement_type *fill));
114 static void print_data_statement PARAMS ((lang_data_statement_type *data));
115 static void print_reloc_statement PARAMS ((lang_reloc_statement_type *reloc));
116 static void print_padding_statement PARAMS ((lang_padding_statement_type *s));
117 static void print_wild_statement
118 PARAMS ((lang_wild_statement_type *w,
119 lang_output_section_statement_type *os));
120 static void print_statement PARAMS ((lang_statement_union_type *s,
121 lang_output_section_statement_type *os));
122 static void print_statements PARAMS ((void));
123 static bfd_vma insert_pad PARAMS ((lang_statement_union_type **this_ptr,
124 fill_type fill, unsigned int power,
125 asection *output_section_statement,
127 static bfd_vma size_input_section
128 PARAMS ((lang_statement_union_type **this_ptr,
129 lang_output_section_statement_type *output_section_statement,
130 fill_type fill, bfd_vma dot, boolean relax));
131 static bfd_vma lang_do_assignments
132 PARAMS ((lang_statement_union_type * s,
133 lang_output_section_statement_type *output_section_statement,
136 static void lang_finish PARAMS ((void));
137 static void lang_check PARAMS ((void));
138 static void lang_common PARAMS ((void));
139 static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
140 static void lang_place_orphans PARAMS ((void));
141 static int topower PARAMS ((int));
142 static void reset_memory_regions PARAMS ((void));
145 lang_output_section_statement_type *abs_output_section;
146 lang_statement_list_type *stat_ptr = &statement_list;
147 lang_statement_list_type file_chain =
149 CONST char *entry_symbol = 0;
150 boolean lang_has_input_file = false;
151 boolean had_output_filename = false;
152 boolean lang_float_flag = false;
153 boolean delete_output_file_on_failure = false;
155 etree_type *base; /* Relocation base - or null */
158 #if defined(__STDC__) || defined(ALMOST_STDC)
159 #define cat(a,b) a##b
161 #define cat(a,b) a/**/b
164 #define new_stat(x,y) (cat(x,_type)*) new_statement(cat(x,_enum), sizeof(cat(x,_type)),y)
166 #define outside_section_address(q) ( (q)->output_offset + (q)->output_section->vma)
168 #define outside_symbol_address(q) ((q)->value + outside_section_address(q->section))
174 return obstack_alloc (&stat_obstack, size);
181 fprintf (config.map_file, "%5x", (unsigned) value);
185 print_alignment (value)
188 fprintf (config.map_file, "2**%1u", value);
195 fprintf (config.map_file, "%04x", (unsigned) value);
202 fprintf (config.map_file, "%*s", -longest_section_name, name);
205 /*----------------------------------------------------------------------
206 lang_for_each_statement walks the parse tree and calls the provided
207 function for each node
211 lang_for_each_statement_worker (func, s)
212 void (*func) PARAMS ((lang_statement_union_type *));
213 lang_statement_union_type *s;
215 for (; s != (lang_statement_union_type *) NULL; s = s->next)
219 switch (s->header.type)
221 case lang_constructors_statement_enum:
222 lang_for_each_statement_worker (func, constructor_list.head);
224 case lang_output_section_statement_enum:
225 lang_for_each_statement_worker
227 s->output_section_statement.children.head);
229 case lang_wild_statement_enum:
230 lang_for_each_statement_worker
232 s->wild_statement.children.head);
234 case lang_data_statement_enum:
235 case lang_reloc_statement_enum:
236 case lang_object_symbols_statement_enum:
237 case lang_output_statement_enum:
238 case lang_target_statement_enum:
239 case lang_input_section_enum:
240 case lang_input_statement_enum:
241 case lang_assignment_statement_enum:
242 case lang_padding_statement_enum:
243 case lang_address_statement_enum:
253 lang_for_each_statement (func)
254 void (*func) PARAMS ((lang_statement_union_type *));
256 lang_for_each_statement_worker (func,
257 statement_list.head);
260 /*----------------------------------------------------------------------*/
262 lang_list_init (list)
263 lang_statement_list_type *list;
265 list->head = (lang_statement_union_type *) NULL;
266 list->tail = &list->head;
269 /*----------------------------------------------------------------------
271 build a new statement node for the parse tree
276 lang_statement_union_type *
277 new_statement (type, size, list)
278 enum statement_enum type;
280 lang_statement_list_type * list;
282 lang_statement_union_type *new = (lang_statement_union_type *)
285 new->header.type = type;
286 new->header.next = (lang_statement_union_type *) NULL;
287 lang_statement_append (list, new, &new->header.next);
292 Build a new input file node for the language. There are several ways
293 in which we treat an input file, eg, we only look at symbols, or
294 prefix it with a -l etc.
296 We can be supplied with requests for input files more than once;
297 they may, for example be split over serveral lines like foo.o(.text)
298 foo.o(.data) etc, so when asked for a file we check that we havn't
299 got it already so we don't duplicate the bfd.
302 static lang_input_statement_type *
303 new_afile (name, file_type, target, add_to_list)
305 lang_input_file_enum_type file_type;
309 lang_input_statement_type *p;
312 p = new_stat (lang_input_statement, stat_ptr);
315 p = ((lang_input_statement_type *)
316 stat_alloc (sizeof (lang_input_statement_type)));
317 p->header.next = NULL;
320 lang_has_input_file = true;
322 p->complained = false;
325 case lang_input_file_is_symbols_only_enum:
327 p->is_archive = false;
329 p->local_sym_name = name;
330 p->just_syms_flag = true;
331 p->search_dirs_flag = false;
333 case lang_input_file_is_fake_enum:
335 p->is_archive = false;
337 p->local_sym_name = name;
338 p->just_syms_flag = false;
339 p->search_dirs_flag = false;
341 case lang_input_file_is_l_enum:
342 p->is_archive = true;
345 p->local_sym_name = concat ("-l", name, (const char *) NULL);
346 p->just_syms_flag = false;
347 p->search_dirs_flag = true;
349 case lang_input_file_is_marker_enum:
351 p->is_archive = false;
353 p->local_sym_name = name;
354 p->just_syms_flag = false;
355 p->search_dirs_flag = true;
357 case lang_input_file_is_search_file_enum:
359 p->is_archive = false;
361 p->local_sym_name = name;
362 p->just_syms_flag = false;
363 p->search_dirs_flag = true;
365 case lang_input_file_is_file_enum:
367 p->is_archive = false;
369 p->local_sym_name = name;
370 p->just_syms_flag = false;
371 p->search_dirs_flag = false;
376 p->the_bfd = (bfd *) NULL;
377 p->asymbols = (asymbol **) NULL;
378 p->superfile = (lang_input_statement_type *) NULL;
379 p->next_real_file = (lang_statement_union_type *) NULL;
380 p->next = (lang_statement_union_type *) NULL;
382 p->common_output_section = (asection *) NULL;
384 lang_statement_append (&input_file_chain,
385 (lang_statement_union_type *) p,
390 lang_input_statement_type *
391 lang_add_input_file (name, file_type, target)
393 lang_input_file_enum_type file_type;
396 /* Look it up or build a new one */
397 lang_has_input_file = true;
400 lang_input_statement_type *p;
402 for (p = (lang_input_statement_type *) input_file_chain.head;
403 p != (lang_input_statement_type *) NULL;
404 p = (lang_input_statement_type *) (p->next_real_file))
406 /* Sometimes we have incomplete entries in here */
407 if (p->filename != (char *) NULL)
409 if (strcmp (name, p->filename) == 0)
415 return new_afile (name, file_type, target, true);
418 /* Build enough state so that the parser can build its tree */
422 obstack_begin (&stat_obstack, 1000);
424 stat_ptr = &statement_list;
426 lang_list_init (stat_ptr);
428 lang_list_init (&input_file_chain);
429 lang_list_init (&lang_output_section_statement);
430 lang_list_init (&file_chain);
431 first_file = lang_add_input_file ((char *) NULL,
432 lang_input_file_is_marker_enum,
434 abs_output_section = lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
436 abs_output_section->bfd_section = &bfd_abs_section;
440 /*----------------------------------------------------------------------
441 A region is an area of memory declared with the
442 MEMORY { name:org=exp, len=exp ... }
445 We maintain a list of all the regions here
447 If no regions are specified in the script, then the default is used
448 which is created when looked up to be the entire data space
451 static lang_memory_region_type *lang_memory_region_list;
452 static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list;
454 lang_memory_region_type *
455 lang_memory_region_lookup (name)
456 CONST char *CONST name;
459 lang_memory_region_type *p = lang_memory_region_list;
461 for (p = lang_memory_region_list;
462 p != (lang_memory_region_type *) NULL;
465 if (strcmp (p->name, name) == 0)
470 if (strcmp (name, "*default*") == 0)
472 /* This is the default region, dig out first one on the list */
473 if (lang_memory_region_list != (lang_memory_region_type *) NULL)
475 return lang_memory_region_list;
479 lang_memory_region_type *new =
480 (lang_memory_region_type *) stat_alloc ((bfd_size_type) (sizeof (lang_memory_region_type)));
482 new->name = buystring (name);
483 new->next = (lang_memory_region_type *) NULL;
485 *lang_memory_region_list_tail = new;
486 lang_memory_region_list_tail = &new->next;
488 new->length = ~(bfd_size_type)0;
490 new->had_full_message = false;
497 lang_output_section_statement_type *
498 lang_output_section_find (name)
499 CONST char *CONST name;
501 lang_statement_union_type *u;
502 lang_output_section_statement_type *lookup;
504 for (u = lang_output_section_statement.head;
505 u != (lang_statement_union_type *) NULL;
508 lookup = &u->output_section_statement;
509 if (strcmp (name, lookup->name) == 0)
514 return (lang_output_section_statement_type *) NULL;
517 lang_output_section_statement_type *
518 lang_output_section_statement_lookup (name)
519 CONST char *CONST name;
521 lang_output_section_statement_type *lookup;
523 lookup = lang_output_section_find (name);
524 if (lookup == (lang_output_section_statement_type *) NULL)
527 lookup = (lang_output_section_statement_type *)
528 new_stat (lang_output_section_statement, stat_ptr);
529 lookup->region = (lang_memory_region_type *) NULL;
531 lookup->block_value = 1;
534 lookup->next = (lang_statement_union_type *) NULL;
535 lookup->bfd_section = (asection *) NULL;
536 lookup->processed = false;
537 lookup->loadable = 1;
538 lookup->addr_tree = (etree_type *) NULL;
539 lang_list_init (&lookup->children);
541 lookup->memspec = (CONST char *) NULL;
543 lookup->subsection_alignment = -1;
544 lookup->section_alignment = -1;
545 lookup->load_base = (union etree_union *) NULL;
547 lang_statement_append (&lang_output_section_statement,
548 (lang_statement_union_type *) lookup,
556 print_flags (ignore_flags)
559 fprintf (config.map_file, "(");
561 if (flags->flag_read)
562 fprintf (outfile, "R");
563 if (flags->flag_write)
564 fprintf (outfile, "W");
565 if (flags->flag_executable)
566 fprintf (outfile, "X");
567 if (flags->flag_loadable)
568 fprintf (outfile, "L");
570 fprintf (config.map_file, ")");
576 lang_memory_region_type *m;
578 fprintf (config.map_file, "**MEMORY CONFIGURATION**\n\n");
580 fprintf (config.map_file, "name\t\torigin\t\tlength\t\tattributes\n");
582 fprintf (config.map_file,
583 "name\t\torigin length r_size c_size is attributes\n");
586 for (m = lang_memory_region_list;
587 m != (lang_memory_region_type *) NULL;
590 fprintf (config.map_file, "%-16s", m->name);
591 print_address (m->origin);
593 print_address ((bfd_vma)m->length);
595 print_address ((bfd_vma)m->old_length);
597 print_address (m->current - m->origin);
600 fprintf (config.map_file, " %2d%% ",
601 (int) ((m->current - m->origin) * 100 / m->old_length));
602 print_flags (&m->flags);
603 fprintf (config.map_file, "\n");
605 fprintf (config.map_file, "\n\n**LINK EDITOR MEMORY MAP**\n\n");
606 fprintf (config.map_file, "output input virtual\n");
607 fprintf (config.map_file, "section section address tsize\n\n");
618 lang_output_section_statement_type * s;
620 /* asection *section = bfd_get_section_by_name(output_bfd, s->name);*/
621 section_userdata_type *new =
622 (section_userdata_type *)
623 stat_alloc ((bfd_size_type) (sizeof (section_userdata_type)));
625 s->bfd_section = bfd_get_section_by_name (output_bfd, s->name);
626 if (s->bfd_section == (asection *) NULL)
627 s->bfd_section = bfd_make_section (output_bfd, s->name);
628 if (s->bfd_section == (asection *) NULL)
630 einfo ("%P%F: output format %s cannot represent section called %s\n",
631 output_bfd->xvec->name, s->name);
633 s->bfd_section->output_section = s->bfd_section;
634 /* s->bfd_section->flags = s->flags;*/
636 /* We initialize an output sections output offset to minus its own */
637 /* vma to allow us to output a section through itself */
638 s->bfd_section->output_offset = 0;
639 get_userdata (s->bfd_section) = (PTR) new;
643 /***********************************************************************
646 These expand statements like *(.text) and foo.o to a list of
647 explicit actions, like foo.o(.text), bar.o(.text) and
650 The toplevel routine, wild, takes a statement, section, file and
651 target. If either the section or file is null it is taken to be the
652 wildcard. Seperate lang_input_section statements are created for
653 each part of the expanstion, and placed after the statement provided.
658 wild_doit (ptr, section, output, file)
659 lang_statement_list_type * ptr;
661 lang_output_section_statement_type * output;
662 lang_input_statement_type * file;
664 if (output->bfd_section == (asection *) NULL)
667 /* Initialize the vma and size to the existing section. This will
668 be overriden in lang_size_sections unless SEC_NEVER_LOAD gets
670 if (section != (asection *) NULL)
672 bfd_set_section_vma (0, output->bfd_section,
673 bfd_section_vma (0, section));
674 output->bfd_section->_raw_size = section->_raw_size;
678 if (section != (asection *) NULL
679 && section->output_section == (asection *) NULL)
681 /* Add a section reference to the list */
682 lang_input_section_type *new = new_stat (lang_input_section, ptr);
684 new->section = section;
686 section->output_section = output->bfd_section;
688 /* Be selective about what the output section inherits from the
691 if ((section->flags & SEC_SHARED_LIBRARY) != 0)
692 section->output_section->flags |= section->flags;
694 section->output_section->flags |=
695 section->flags & (flagword) (~ SEC_NEVER_LOAD);
697 if (!output->loadable)
699 /* Turn off load flag */
700 output->bfd_section->flags &= ~SEC_LOAD;
701 output->bfd_section->flags |= SEC_NEVER_LOAD;
703 if (section->alignment_power > output->bfd_section->alignment_power)
705 output->bfd_section->alignment_power = section->alignment_power;
707 /* If supplied an aligmnet, then force it */
708 if (output->section_alignment != -1)
710 output->bfd_section->alignment_power = output->section_alignment;
716 our_bfd_get_section_by_name (abfd, section)
720 return bfd_get_section_by_name (abfd, section);
724 wild_section (ptr, section, file, output)
725 lang_wild_statement_type * ptr;
727 lang_input_statement_type * file;
728 lang_output_section_statement_type * output;
732 if (file->just_syms_flag == false)
734 if (section == (char *) NULL)
736 /* Do the creation to all sections in the file */
737 for (s = file->the_bfd->sections; s != (asection *) NULL; s = s->next)
740 if ((s->flags & SEC_IS_COMMON) == 0)
742 wild_doit (&ptr->children, s, output, file);
748 /* Do the creation to the named section only */
749 wild_doit (&ptr->children,
750 our_bfd_get_section_by_name (file->the_bfd, section),
756 /* passed a file name (which must have been seen already and added to
757 the statement tree. We will see if it has been opened already and
758 had its symbols read. If not then we'll read it.
760 Archives are pecuilar here. We may open them once, but if they do
761 not define anything we need at the time, they won't have all their
762 symbols read. If we need them later, we'll have to redo it.
764 static lang_input_statement_type *
768 lang_input_statement_type *search;
770 for (search = (lang_input_statement_type *) input_file_chain.head;
771 search != (lang_input_statement_type *) NULL;
772 search = (lang_input_statement_type *) search->next_real_file)
774 if (search->filename == (char *) NULL && name == (char *) NULL)
776 if (search->filename != (char *) NULL
777 && name != (char *) NULL
778 && strcmp (search->filename, name) == 0)
782 if (search == (lang_input_statement_type *) NULL)
783 search = new_afile (name, lang_input_file_is_file_enum, default_target,
786 /* If we have already added this file, or this file is not real
787 (FIXME: can that ever actually happen?) or the name is NULL
788 (FIXME: can that ever actually happen?) don't add this file. */
791 || search->filename == (const char *) NULL)
794 load_symbols (search);
799 /* Get the symbols for an input file. */
803 lang_input_statement_type *entry;
808 ldfile_open_file (entry);
810 if (bfd_check_format (entry->the_bfd, bfd_object))
812 ldlang_add_file (entry);
813 if (trace_files || trace_file_tries)
814 info_msg ("%I\n", entry);
816 else if (bfd_check_format (entry->the_bfd, bfd_archive))
818 /* There is nothing to do here; the add_symbols routine will
819 call ldlang_add_file (via the add_archive_element callback)
820 for each element of the archive which is used. */
823 einfo ("%F%B: file not recognized: %E\n", entry->the_bfd);
825 if (bfd_link_add_symbols (entry->the_bfd, &link_info) == false)
826 einfo ("%F%B: could not read symbols: %E\n", entry->the_bfd);
828 entry->loaded = true;
832 wild (s, section, file, target, output)
833 lang_wild_statement_type * s;
837 lang_output_section_statement_type * output;
839 lang_input_statement_type *f;
841 if (file == (char *) NULL)
843 /* Perform the iteration over all files in the list */
844 for (f = (lang_input_statement_type *) file_chain.head;
845 f != (lang_input_statement_type *) NULL;
846 f = (lang_input_statement_type *) f->next)
848 wild_section (s, section, f, output);
853 /* Perform the iteration over a single file */
854 wild_section (s, section, lookup_name (file), output);
856 if (section != (char *) NULL
857 && strcmp (section, "COMMON") == 0
858 && default_common_section == (lang_output_section_statement_type *) NULL)
860 /* Remember the section that common is going to incase we later
861 get something which doesn't know where to put it */
862 default_common_section = output;
867 read in all the files
876 if (output_target == (char *) NULL)
878 if (current_target != (char *) NULL)
879 output_target = current_target;
881 output_target = default_target;
883 output = bfd_openw (name, output_target);
885 if (output == (bfd *) NULL)
887 if (bfd_get_error () == bfd_error_invalid_target)
889 einfo ("%P%F: target %s not found\n", output_target);
891 einfo ("%P%F: cannot open output file %s: %E\n", name);
894 delete_output_file_on_failure = 1;
896 /* output->flags |= D_PAGED;*/
898 if (! bfd_set_format (output, bfd_object))
899 einfo ("%P%F:%s: can not make object file: %E\n", name);
900 if (! bfd_set_arch_mach (output,
901 ldfile_output_architecture,
902 ldfile_output_machine))
903 einfo ("%P%F:%s: can not set architecture: %E\n", name);
905 link_info.hash = bfd_link_hash_table_create (output);
906 if (link_info.hash == (struct bfd_link_hash_table *) NULL)
907 einfo ("%P%F: can not create link hash table: %E\n");
909 bfd_set_gp_size (output, g_switch_value);
917 ldlang_open_output (statement)
918 lang_statement_union_type * statement;
920 switch (statement->header.type)
922 case lang_output_statement_enum:
923 ASSERT (output_bfd == (bfd *) NULL);
924 output_bfd = open_output (statement->output_statement.name);
925 ldemul_set_output_arch ();
926 if (config.magic_demand_paged && !link_info.relocateable)
927 output_bfd->flags |= D_PAGED;
929 output_bfd->flags &= ~D_PAGED;
930 if (config.text_read_only)
931 output_bfd->flags |= WP_TEXT;
933 output_bfd->flags &= ~WP_TEXT;
936 case lang_target_statement_enum:
937 current_target = statement->target_statement.target;
945 open_input_bfds (statement)
946 lang_statement_union_type * statement;
948 switch (statement->header.type)
950 case lang_target_statement_enum:
951 current_target = statement->target_statement.target;
953 case lang_wild_statement_enum:
954 /* Maybe we should load the file's symbols */
955 if (statement->wild_statement.filename)
957 (void) lookup_name (statement->wild_statement.filename);
960 case lang_input_statement_enum:
961 if (statement->input_statement.real == true)
963 statement->input_statement.target = current_target;
964 load_symbols (&statement->input_statement);
972 /* If there are [COMMONS] statements, put a wild one into the bss section */
975 lang_reasonable_defaults ()
978 lang_output_section_statement_lookup (".text");
979 lang_output_section_statement_lookup (".data");
981 default_common_section =
982 lang_output_section_statement_lookup (".bss");
985 if (placed_commons == false)
987 lang_wild_statement_type *new =
988 new_stat (lang_wild_statement,
989 &default_common_section->children);
991 new->section_name = "COMMON";
992 new->filename = (char *) NULL;
993 lang_list_init (&new->children);
1000 Add the supplied name to the symbol table as an undefined reference.
1001 Remove items from the chain as we open input bfds
1003 typedef struct ldlang_undef_chain_list
1005 struct ldlang_undef_chain_list *next;
1007 } ldlang_undef_chain_list_type;
1009 static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head;
1012 ldlang_add_undef (name)
1013 CONST char *CONST name;
1015 ldlang_undef_chain_list_type *new =
1016 (ldlang_undef_chain_list_type
1017 *) stat_alloc ((bfd_size_type) (sizeof (ldlang_undef_chain_list_type)));
1019 new->next = ldlang_undef_chain_list_head;
1020 ldlang_undef_chain_list_head = new;
1022 new->name = buystring (name);
1025 /* Run through the list of undefineds created above and place them
1026 into the linker hash table as undefined symbols belonging to the
1030 lang_place_undefineds ()
1032 ldlang_undef_chain_list_type *ptr;
1034 for (ptr = ldlang_undef_chain_list_head;
1035 ptr != (ldlang_undef_chain_list_type *) NULL;
1038 struct bfd_link_hash_entry *h;
1040 h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true);
1041 if (h == (struct bfd_link_hash_entry *) NULL)
1042 einfo ("%P%F: bfd_link_hash_lookup failed: %E");
1043 if (h->type == bfd_link_hash_new)
1045 h->type = bfd_link_hash_undefined;
1046 h->u.undef.abfd = NULL;
1047 bfd_link_add_undef (link_info.hash, h);
1052 /* Copy important data from out internal form to the bfd way. Also
1053 create a section for the dummy file
1057 lang_create_output_section_statements ()
1059 lang_statement_union_type *os;
1061 for (os = lang_output_section_statement.head;
1062 os != (lang_statement_union_type *) NULL;
1063 os = os->output_section_statement.next)
1065 lang_output_section_statement_type *s =
1066 &os->output_section_statement;
1073 /* Open input files and attatch to output sections */
1075 map_input_to_output_sections (s, target, output_section_statement)
1076 lang_statement_union_type * s;
1078 lang_output_section_statement_type * output_section_statement;
1080 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1082 switch (s->header.type)
1086 case lang_wild_statement_enum:
1087 wild (&s->wild_statement, s->wild_statement.section_name,
1088 s->wild_statement.filename, target,
1089 output_section_statement);
1092 case lang_constructors_statement_enum:
1093 map_input_to_output_sections (constructor_list.head,
1095 output_section_statement);
1097 case lang_output_section_statement_enum:
1098 map_input_to_output_sections (s->output_section_statement.children.head,
1100 &s->output_section_statement);
1102 case lang_output_statement_enum:
1104 case lang_target_statement_enum:
1105 target = s->target_statement.target;
1107 case lang_fill_statement_enum:
1108 case lang_input_section_enum:
1109 case lang_object_symbols_statement_enum:
1110 case lang_data_statement_enum:
1111 case lang_reloc_statement_enum:
1112 case lang_assignment_statement_enum:
1113 case lang_padding_statement_enum:
1115 case lang_afile_asection_pair_statement_enum:
1118 case lang_address_statement_enum:
1119 /* Mark the specified section with the supplied address */
1121 lang_output_section_statement_type *os =
1122 lang_output_section_statement_lookup
1123 (s->address_statement.section_name);
1125 os->addr_tree = s->address_statement.address;
1126 if (os->bfd_section == (asection *) NULL)
1128 einfo ("%P%F: cannot set the address of undefined section %s\n",
1129 s->address_statement.section_name);
1133 case lang_input_statement_enum:
1134 /* A standard input statement, has no wildcards */
1141 print_output_section_statement (output_section_statement)
1142 lang_output_section_statement_type * output_section_statement;
1144 asection *section = output_section_statement->bfd_section;
1147 print_section (output_section_statement->name);
1152 print_dot = section->vma;
1156 print_address (section->vma);
1158 print_size (section->_raw_size);
1160 print_size(section->_cooked_size);
1162 print_alignment (section->alignment_power);
1165 fprintf (config.map_file, "%s flags", output_section_statement->region->name);
1166 print_flags (stdout, &output_section_statement->flags);
1168 if (section->flags & SEC_LOAD)
1169 fprintf (config.map_file, "load ");
1170 if (section->flags & SEC_ALLOC)
1171 fprintf (config.map_file, "alloc ");
1172 if (section->flags & SEC_RELOC)
1173 fprintf (config.map_file, "reloc ");
1174 if (section->flags & SEC_HAS_CONTENTS)
1175 fprintf (config.map_file, "contents ");
1180 fprintf (config.map_file, "No attached output section");
1183 if (output_section_statement->load_base)
1185 int b = exp_get_value_int(output_section_statement->load_base,
1186 0, "output base", lang_final_phase_enum);
1187 printf("Output address %08x\n", b);
1189 if (output_section_statement->section_alignment >= 0
1190 || output_section_statement->section_alignment >= 0)
1192 printf("\t\t\t\t\tforced alignment ");
1193 if ( output_section_statement->section_alignment >= 0)
1195 printf("section 2**%d ",output_section_statement->section_alignment );
1197 if ( output_section_statement->subsection_alignment >= 0)
1199 printf("subsection 2**%d ",output_section_statement->subsection_alignment );
1204 print_statement (output_section_statement->children.head,
1205 output_section_statement);
1210 print_assignment (assignment, output_section)
1211 lang_assignment_statement_type * assignment;
1212 lang_output_section_statement_type * output_section;
1214 etree_value_type result;
1220 print_address (print_dot);
1222 result = exp_fold_tree (assignment->exp->assign.src,
1224 lang_final_phase_enum,
1230 print_address (result.value);
1234 fprintf (config.map_file, "*undefined*");
1237 exp_print_tree (assignment->exp);
1239 fprintf (config.map_file, "\n");
1243 print_input_statement (statm)
1244 lang_input_statement_type * statm;
1246 if (statm->filename != (char *) NULL)
1248 fprintf (config.map_file, "LOAD %s\n", statm->filename);
1252 /* Print all the defined symbols for the abfd provided by in the supplied
1257 print_one_symbol (hash_entry, ptr)
1258 struct bfd_link_hash_entry *hash_entry;
1261 asection * sec = (asection *)ptr;
1263 if (hash_entry->type == bfd_link_hash_defined)
1265 if (sec == hash_entry->u.def.section) {
1267 fprintf (config.map_file, " ");
1269 fprintf (config.map_file, " ");
1270 print_address (hash_entry->u.def.value + outside_section_address (sec));
1271 fprintf (config.map_file, " %s", hash_entry->root.string);
1280 print_input_section (in)
1281 lang_input_section_type * in;
1283 asection *i = in->section;
1284 int size = i->reloc_done ?
1285 bfd_get_section_size_after_reloc (i) :
1286 bfd_get_section_size_before_reloc (i);
1291 fprintf (config.map_file, " ");
1292 print_section (i->name);
1293 fprintf (config.map_file, " ");
1294 if (i->output_section)
1296 print_address (i->output_section->vma + i->output_offset);
1297 fprintf (config.map_file, " ");
1298 print_size (i->_raw_size);
1299 fprintf (config.map_file, " ");
1300 print_size(i->_cooked_size);
1301 fprintf (config.map_file, " ");
1302 print_alignment (i->alignment_power);
1303 fprintf (config.map_file, " ");
1307 bfd *abfd = in->ifile->the_bfd;
1309 if (in->ifile->just_syms_flag == true)
1311 fprintf (config.map_file, "symbols only ");
1314 fprintf (config.map_file, " %s ", abfd->xvec->name);
1315 if (abfd->my_archive != (bfd *) NULL)
1317 fprintf (config.map_file, "[%s]%s", abfd->my_archive->filename,
1322 fprintf (config.map_file, "%s", abfd->filename);
1324 fprintf (config.map_file, "(overhead %d bytes)", (int) bfd_alloc_size (abfd));
1327 /* Print all the symbols */
1328 bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i);
1336 print_dot = outside_section_address (i) + size;
1340 fprintf (config.map_file, "No output section allocated\n");
1346 print_fill_statement (fill)
1347 lang_fill_statement_type * fill;
1349 fprintf (config.map_file, "FILL mask ");
1350 print_fill (fill->fill);
1354 print_data_statement (data)
1355 lang_data_statement_type * data;
1357 /* bfd_vma value; */
1362 /* ASSERT(print_dot == data->output_vma);*/
1364 print_address (data->output_vma + data->output_section->vma);
1366 print_address (data->value);
1371 fprintf (config.map_file, "BYTE ");
1372 print_dot += BYTE_SIZE;
1375 fprintf (config.map_file, "SHORT ");
1376 print_dot += SHORT_SIZE;
1379 fprintf (config.map_file, "LONG ");
1380 print_dot += LONG_SIZE;
1383 fprintf (config.map_file, "QUAD ");
1384 print_dot += QUAD_SIZE;
1388 exp_print_tree (data->exp);
1390 fprintf (config.map_file, "\n");
1393 /* Print a reloc statement. */
1396 print_reloc_statement (reloc)
1397 lang_reloc_statement_type *reloc;
1404 /* ASSERT(print_dot == data->output_vma);*/
1406 print_address (reloc->output_vma + reloc->output_section->vma);
1408 print_address (reloc->addend_value);
1411 fprintf (config.map_file, "RELOC %s ", reloc->howto->name);
1413 print_dot += bfd_get_reloc_size (reloc->howto);
1415 exp_print_tree (reloc->addend_exp);
1417 fprintf (config.map_file, "\n");
1421 print_padding_statement (s)
1422 lang_padding_statement_type * s;
1426 print_section ("*fill*");
1428 print_address (s->output_offset + s->output_section->vma);
1430 print_size (s->size);
1432 print_fill (s->fill);
1435 print_dot = s->output_offset + s->output_section->vma + s->size;
1440 print_wild_statement (w, os)
1441 lang_wild_statement_type * w;
1442 lang_output_section_statement_type * os;
1444 fprintf (config.map_file, " from ");
1445 if (w->filename != (char *) NULL)
1447 fprintf (config.map_file, "%s", w->filename);
1451 fprintf (config.map_file, "*");
1453 if (w->section_name != (char *) NULL)
1455 fprintf (config.map_file, "(%s)", w->section_name);
1459 fprintf (config.map_file, "(*)");
1462 print_statement (w->children.head, os);
1466 print_statement (s, os)
1467 lang_statement_union_type * s;
1468 lang_output_section_statement_type * os;
1472 switch (s->header.type)
1474 case lang_constructors_statement_enum:
1475 fprintf (config.map_file, "constructors:\n");
1476 print_statement (constructor_list.head, os);
1478 case lang_wild_statement_enum:
1479 print_wild_statement (&s->wild_statement, os);
1482 fprintf (config.map_file, "Fail with %d\n", s->header.type);
1485 case lang_address_statement_enum:
1486 fprintf (config.map_file, "address\n");
1488 case lang_object_symbols_statement_enum:
1489 fprintf (config.map_file, "object symbols\n");
1491 case lang_fill_statement_enum:
1492 print_fill_statement (&s->fill_statement);
1494 case lang_data_statement_enum:
1495 print_data_statement (&s->data_statement);
1497 case lang_reloc_statement_enum:
1498 print_reloc_statement (&s->reloc_statement);
1500 case lang_input_section_enum:
1501 print_input_section (&s->input_section);
1503 case lang_padding_statement_enum:
1504 print_padding_statement (&s->padding_statement);
1506 case lang_output_section_statement_enum:
1507 print_output_section_statement (&s->output_section_statement);
1509 case lang_assignment_statement_enum:
1510 print_assignment (&s->assignment_statement,
1513 case lang_target_statement_enum:
1514 fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
1516 case lang_output_statement_enum:
1517 fprintf (config.map_file, "OUTPUT(%s %s)\n",
1518 s->output_statement.name,
1519 output_target ? output_target : "");
1521 case lang_input_statement_enum:
1522 print_input_statement (&s->input_statement);
1524 case lang_afile_asection_pair_statement_enum:
1536 print_statement (statement_list.head,
1537 abs_output_section);
1542 insert_pad (this_ptr, fill, power, output_section_statement, dot)
1543 lang_statement_union_type ** this_ptr;
1546 asection * output_section_statement;
1549 /* Align this section first to the
1550 input sections requirement, then
1551 to the output section's requirement.
1552 If this alignment is > than any seen before,
1553 then record it too. Perform the alignment by
1554 inserting a magic 'padding' statement.
1557 unsigned int alignment_needed = align_power (dot, power) - dot;
1559 if (alignment_needed != 0)
1561 lang_statement_union_type *new =
1562 (lang_statement_union_type *)
1563 stat_alloc ((bfd_size_type) (sizeof (lang_padding_statement_type)));
1565 /* Link into existing chain */
1566 new->header.next = *this_ptr;
1568 new->header.type = lang_padding_statement_enum;
1569 new->padding_statement.output_section = output_section_statement;
1570 new->padding_statement.output_offset =
1571 dot - output_section_statement->vma;
1572 new->padding_statement.fill = fill;
1573 new->padding_statement.size = alignment_needed;
1577 /* Remember the most restrictive alignment */
1578 if (power > output_section_statement->alignment_power)
1580 output_section_statement->alignment_power = power;
1582 output_section_statement->_raw_size += alignment_needed;
1583 return alignment_needed + dot;
1587 /* Work out how much this section will move the dot point */
1589 size_input_section (this_ptr, output_section_statement, fill, dot, relax)
1590 lang_statement_union_type ** this_ptr;
1591 lang_output_section_statement_type * output_section_statement;
1596 lang_input_section_type *is = &((*this_ptr)->input_section);
1597 asection *i = is->section;
1599 if (is->ifile->just_syms_flag == false)
1601 if (output_section_statement->subsection_alignment != -1)
1602 i->alignment_power =
1603 output_section_statement->subsection_alignment;
1605 dot = insert_pad (this_ptr, fill, i->alignment_power,
1606 output_section_statement->bfd_section, dot);
1608 /* Remember where in the output section this input section goes */
1610 i->output_offset = dot - output_section_statement->bfd_section->vma;
1612 /* Mark how big the output section must be to contain this now
1616 dot += i->_cooked_size;
1620 dot += i->_raw_size;
1622 output_section_statement->bfd_section->_raw_size = dot - output_section_statement->bfd_section->vma;
1626 i->output_offset = i->vma - output_section_statement->bfd_section->vma;
1632 /* This variable indicates whether bfd_relax_section should be called
1635 static boolean relax_again;
1637 /* Set the sizes for all the output sections. */
1640 lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
1641 lang_statement_union_type * s;
1642 lang_output_section_statement_type * output_section_statement;
1643 lang_statement_union_type ** prev;
1648 /* Size up the sections from their constituent parts */
1649 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1651 switch (s->header.type)
1654 case lang_output_section_statement_enum:
1657 lang_output_section_statement_type *os = &s->output_section_statement;
1659 /* If this is a shared library section, don't change the size
1661 if (os->bfd_section->flags & SEC_SHARED_LIBRARY)
1664 if (os->bfd_section == &bfd_abs_section)
1666 /* No matter what happens, an abs section starts at zero */
1667 bfd_set_section_vma (0, os->bfd_section, 0);
1671 if (os->addr_tree == (etree_type *) NULL)
1673 /* No address specified for this section, get one
1674 from the region specification
1676 if (os->region == (lang_memory_region_type *) NULL)
1678 os->region = lang_memory_region_lookup ("*default*");
1680 dot = os->region->current;
1686 r = exp_fold_tree (os->addr_tree,
1688 lang_allocating_phase_enum,
1690 if (r.valid == false)
1692 einfo ("%F%S: non constant address expression for section %s\n",
1697 /* The section starts here */
1698 /* First, align to what the section needs */
1700 if (os->section_alignment != -1)
1701 dot = align_power (dot, os->section_alignment);
1703 bfd_set_section_vma (0, os->bfd_section, dot);
1705 if (os->load_base) {
1706 os->bfd_section->lma
1707 = exp_get_value_int(os->load_base, 0,"load base", lang_final_phase_enum);
1712 os->bfd_section->output_offset = 0;
1714 (void) lang_size_sections (os->children.head, os, &os->children.head,
1715 os->fill, dot, relax);
1716 /* Ignore the size of the input sections, use the vma and size to */
1719 after = ALIGN_N (os->bfd_section->vma +
1720 os->bfd_section->_raw_size,
1721 /* The coercion here is important, see ld.h. */
1722 (bfd_vma) os->block_value);
1724 os->bfd_section->_raw_size = after - os->bfd_section->vma;
1725 dot = os->bfd_section->vma + os->bfd_section->_raw_size;
1726 os->processed = true;
1728 /* Replace into region ? */
1729 if (os->addr_tree == (etree_type *) NULL
1730 && os->region != (lang_memory_region_type *) NULL)
1732 os->region->current = dot;
1733 /* Make sure this isn't silly */
1734 if (( os->region->current
1735 > os->region->origin + os->region->length)
1736 || ( os->region->origin > os->region->current ))
1738 einfo ("%X%P: region %s is full (%B section %s)\n",
1740 os->bfd_section->owner,
1741 os->bfd_section->name);
1742 /* Reset the region pointer */
1743 os->region->current = 0;
1751 case lang_constructors_statement_enum:
1752 dot = lang_size_sections (constructor_list.head,
1753 output_section_statement,
1754 &s->wild_statement.children.head,
1759 case lang_data_statement_enum:
1761 unsigned int size = 0;
1763 s->data_statement.output_vma = dot - output_section_statement->bfd_section->vma;
1764 s->data_statement.output_section =
1765 output_section_statement->bfd_section;
1767 switch (s->data_statement.type)
1784 output_section_statement->bfd_section->_raw_size += size;
1788 case lang_reloc_statement_enum:
1792 s->reloc_statement.output_vma =
1793 dot - output_section_statement->bfd_section->vma;
1794 s->reloc_statement.output_section =
1795 output_section_statement->bfd_section;
1796 size = bfd_get_reloc_size (s->reloc_statement.howto);
1798 output_section_statement->bfd_section->_raw_size += size;
1802 case lang_wild_statement_enum:
1804 dot = lang_size_sections (s->wild_statement.children.head,
1805 output_section_statement,
1806 &s->wild_statement.children.head,
1812 case lang_object_symbols_statement_enum:
1813 link_info.create_object_symbols_section =
1814 output_section_statement->bfd_section;
1816 case lang_output_statement_enum:
1817 case lang_target_statement_enum:
1819 case lang_input_section_enum:
1823 i = (*prev)->input_section.section;
1825 i->_cooked_size = i->_raw_size;
1830 if (! bfd_relax_section (i->owner, i, &link_info, &again))
1831 einfo ("%P%F: can't relax section: %E\n");
1835 dot = size_input_section (prev,
1836 output_section_statement,
1837 output_section_statement->fill,
1841 case lang_input_statement_enum:
1843 case lang_fill_statement_enum:
1844 s->fill_statement.output_section = output_section_statement->bfd_section;
1846 fill = s->fill_statement.fill;
1848 case lang_assignment_statement_enum:
1850 bfd_vma newdot = dot;
1852 exp_fold_tree (s->assignment_statement.exp,
1853 output_section_statement,
1854 lang_allocating_phase_enum,
1858 if (newdot != dot && !relax)
1859 /* We've been moved ! so insert a pad */
1861 lang_statement_union_type *new =
1862 (lang_statement_union_type *)
1863 stat_alloc ((bfd_size_type) (sizeof (lang_padding_statement_type)));
1865 /* Link into existing chain */
1866 new->header.next = *prev;
1868 new->header.type = lang_padding_statement_enum;
1869 new->padding_statement.output_section =
1870 output_section_statement->bfd_section;
1871 new->padding_statement.output_offset =
1872 dot - output_section_statement->bfd_section->vma;
1873 new->padding_statement.fill = fill;
1874 new->padding_statement.size = newdot - dot;
1875 output_section_statement->bfd_section->_raw_size +=
1876 new->padding_statement.size;
1885 /* This can only get here when relaxing is turned on */
1886 case lang_padding_statement_enum:
1888 case lang_address_statement_enum:
1891 prev = &s->header.next;
1897 lang_do_assignments (s, output_section_statement, fill, dot)
1898 lang_statement_union_type * s;
1899 lang_output_section_statement_type * output_section_statement;
1903 for (; s != (lang_statement_union_type *) NULL; s = s->next)
1905 switch (s->header.type)
1907 case lang_constructors_statement_enum:
1908 dot = lang_do_assignments (constructor_list.head,
1909 output_section_statement,
1914 case lang_output_section_statement_enum:
1916 lang_output_section_statement_type *os =
1917 &(s->output_section_statement);
1919 dot = os->bfd_section->vma;
1920 (void) lang_do_assignments (os->children.head, os, os->fill, dot);
1921 dot = os->bfd_section->vma + os->bfd_section->_raw_size;
1924 case lang_wild_statement_enum:
1926 dot = lang_do_assignments (s->wild_statement.children.head,
1927 output_section_statement,
1932 case lang_object_symbols_statement_enum:
1933 case lang_output_statement_enum:
1934 case lang_target_statement_enum:
1936 case lang_common_statement_enum:
1939 case lang_data_statement_enum:
1941 etree_value_type value;
1943 value = exp_fold_tree (s->data_statement.exp,
1945 lang_final_phase_enum, dot, &dot);
1946 s->data_statement.value = value.value;
1947 if (value.valid == false)
1948 einfo ("%F%P: invalid data statement\n");
1950 switch (s->data_statement.type)
1967 case lang_reloc_statement_enum:
1969 etree_value_type value;
1971 value = exp_fold_tree (s->reloc_statement.addend_exp,
1973 lang_final_phase_enum, dot, &dot);
1974 s->reloc_statement.addend_value = value.value;
1975 if (value.valid == false)
1976 einfo ("%F%P: invalid reloc statement\n");
1978 dot += bfd_get_reloc_size (s->reloc_statement.howto);
1981 case lang_input_section_enum:
1983 asection *in = s->input_section.section;
1985 dot += bfd_get_section_size_before_reloc (in);
1989 case lang_input_statement_enum:
1991 case lang_fill_statement_enum:
1992 fill = s->fill_statement.fill;
1994 case lang_assignment_statement_enum:
1996 exp_fold_tree (s->assignment_statement.exp,
1997 output_section_statement,
1998 lang_final_phase_enum,
2004 case lang_padding_statement_enum:
2005 dot += s->padding_statement.size;
2010 case lang_address_statement_enum:
2021 struct bfd_link_hash_entry *h;
2022 boolean warn = link_info.relocateable ? false : true;
2024 if (entry_symbol == (char *) NULL)
2026 /* No entry has been specified. Look for start, but don't warn
2027 if we don't find it. */
2028 entry_symbol = "start";
2032 h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
2033 if (h != (struct bfd_link_hash_entry *) NULL
2034 && h->type == bfd_link_hash_defined)
2038 val = (h->u.def.value
2039 + bfd_get_section_vma (output_bfd,
2040 h->u.def.section->output_section)
2041 + h->u.def.section->output_offset);
2042 if (! bfd_set_start_address (output_bfd, val))
2043 einfo ("%P%F:%s: can't set start address\n", entry_symbol);
2049 /* Can't find the entry symbol. Use the first address in the
2051 ts = bfd_get_section_by_name (output_bfd, ".text");
2052 if (ts != (asection *) NULL)
2055 einfo ("%P: warning: cannot find entry symbol %s; defaulting to %V\n",
2056 entry_symbol, bfd_get_section_vma (output_bfd, ts));
2057 if (! bfd_set_start_address (output_bfd,
2058 bfd_get_section_vma (output_bfd, ts)))
2059 einfo ("%P%F: can't set start address\n");
2064 einfo ("%P: warning: cannot find entry symbol %s; not setting start address\n",
2070 /* By now we know the target architecture, and we may have an */
2071 /* ldfile_output_machine_name */
2075 lang_statement_union_type *file;
2077 unsigned long input_machine;
2078 enum bfd_architecture input_architecture;
2079 CONST bfd_arch_info_type *compatible;
2081 for (file = file_chain.head;
2082 file != (lang_statement_union_type *) NULL;
2083 file = file->input_statement.next)
2085 input_bfd = file->input_statement.the_bfd;
2087 input_machine = bfd_get_mach (input_bfd);
2088 input_architecture = bfd_get_arch (input_bfd);
2091 /* Inspect the architecture and ensure we're linking like with
2094 compatible = bfd_arch_get_compatible (input_bfd,
2099 ldfile_output_machine = compatible->mach;
2100 ldfile_output_architecture = compatible->arch;
2105 einfo ("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n",
2106 bfd_printable_name (input_bfd), input_bfd,
2107 bfd_printable_name (output_bfd));
2109 if (! bfd_set_arch_mach (output_bfd,
2112 einfo ("%P%F:%s: can't set architecture: %E\n",
2113 bfd_get_filename (output_bfd));
2119 /* Look through all the global common symbols and attach them to the
2120 correct section. The -sort-common command line switch may be used
2121 to roughly sort the entries by size. */
2126 if (link_info.relocateable
2127 && ! command_line.force_common_definition)
2130 if (! config.sort_common)
2131 bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL);
2136 for (power = 1; power <= 16; power <<= 1)
2137 bfd_link_hash_traverse (link_info.hash, lang_one_common,
2142 /* Place one common symbol in the correct section. */
2145 lang_one_common (h, info)
2146 struct bfd_link_hash_entry *h;
2149 unsigned int power_of_two;
2154 if (h->type != bfd_link_hash_common)
2187 if (config.sort_common && align != *(unsigned int *) info)
2190 section = h->u.c.section;
2192 /* Increase the size of the section. */
2193 section->_raw_size = ALIGN_N (section->_raw_size, align);
2195 /* Adjust the alignment if necessary. */
2196 if (power_of_two > section->alignment_power)
2197 section->alignment_power = power_of_two;
2199 /* Change the symbol from common to defined. */
2200 h->type = bfd_link_hash_defined;
2201 h->u.def.section = section;
2202 h->u.def.value = section->_raw_size;
2204 /* Increase the size of the section. */
2205 section->_raw_size += size;
2207 if (config.map_file != NULL)
2208 fprintf (config.map_file, "Allocating common %s: %lx at %lx %s\n",
2209 h->root.string, (unsigned long) size,
2210 (unsigned long) h->u.def.value, section->owner->filename);
2216 run through the input files and ensure that every input
2217 section has somewhere to go. If one is found without
2218 a destination then create an input request and place it
2219 into the statement tree.
2223 lang_place_orphans ()
2225 lang_input_statement_type *file;
2227 for (file = (lang_input_statement_type *) file_chain.head;
2228 file != (lang_input_statement_type *) NULL;
2229 file = (lang_input_statement_type *) file->next)
2233 for (s = file->the_bfd->sections;
2234 s != (asection *) NULL;
2237 if (s->output_section == (asection *) NULL)
2239 /* This section of the file is not attatched, root
2240 around for a sensible place for it to go */
2242 if (file->common_section == s)
2244 /* This is a lonely common section which must
2245 have come from an archive. We attatch to the
2246 section with the wildcard */
2247 if (! link_info.relocateable
2248 && ! command_line.force_common_definition)
2250 if (default_common_section ==
2251 (lang_output_section_statement_type *) NULL)
2253 info_msg ("%P: no [COMMON] command, defaulting to .bss\n");
2255 default_common_section =
2256 lang_output_section_statement_lookup (".bss");
2259 wild_doit (&default_common_section->children, s,
2260 default_common_section, file);
2265 lang_output_section_statement_type *os =
2266 lang_output_section_statement_lookup (s->name);
2268 wild_doit (&os->children, s, os, file);
2277 lang_set_flags (ptr, flags)
2281 boolean state = false;
2296 /* ptr->flag_read = state; */
2299 /* ptr->flag_write = state; */
2302 /* ptr->flag_executable= state;*/
2306 /* ptr->flag_loadable= state;*/
2309 einfo ("%P%F: invalid syntax in flags\n");
2319 lang_for_each_file (func)
2320 void (*func) PARAMS ((lang_input_statement_type *));
2322 lang_input_statement_type *f;
2324 for (f = (lang_input_statement_type *) file_chain.head;
2325 f != (lang_input_statement_type *) NULL;
2326 f = (lang_input_statement_type *) f->next)
2337 lang_for_each_input_section (func)
2338 void (*func) PARAMS ((bfd * ab, asection * as));
2340 lang_input_statement_type *f;
2342 for (f = (lang_input_statement_type *) file_chain.head;
2343 f != (lang_input_statement_type *) NULL;
2344 f = (lang_input_statement_type *) f->next)
2348 for (s = f->the_bfd->sections;
2349 s != (asection *) NULL;
2352 func (f->the_bfd, s);
2360 ldlang_add_file (entry)
2361 lang_input_statement_type * entry;
2365 lang_statement_append (&file_chain,
2366 (lang_statement_union_type *) entry,
2369 /* The BFD linker needs to have a list of all input BFDs involved in
2371 ASSERT (entry->the_bfd->link_next == (bfd *) NULL);
2372 ASSERT (entry->the_bfd != output_bfd);
2373 for (pp = &link_info.input_bfds;
2374 *pp != (bfd *) NULL;
2375 pp = &(*pp)->link_next)
2377 *pp = entry->the_bfd;
2378 entry->the_bfd->usrdata = (PTR) entry;
2379 bfd_set_gp_size (entry->the_bfd, g_switch_value);
2383 lang_add_output (name, from_script)
2387 /* Make -o on command line override OUTPUT in script. */
2388 if (had_output_filename == false || !from_script)
2390 output_filename = name;
2391 had_output_filename = true;
2396 static lang_output_section_statement_type *current_section;
2398 static int topower(x)
2403 if (x < 0) return -1;
2404 for (l = 0; l < 32; l++)
2406 if (i >= x) return l;
2412 lang_enter_output_section_statement (output_section_statement_name,
2413 address_exp, flags, block_value,
2414 align, subalign, ebase)
2415 const char *output_section_statement_name;
2416 etree_type * address_exp;
2418 bfd_vma block_value;
2420 etree_type *subalign;
2423 lang_output_section_statement_type *os;
2427 lang_output_section_statement_lookup (output_section_statement_name);
2431 /* Add this statement to tree */
2432 /* add_statement(lang_output_section_statement_enum,
2433 output_section_statement);*/
2434 /* Make next things chain into subchain of this */
2436 if (os->addr_tree ==
2437 (etree_type *) NULL)
2443 if (flags & SEC_NEVER_LOAD)
2447 os->block_value = block_value ? block_value : 1;
2448 stat_ptr = &os->children;
2450 os->subsection_alignment = topower(
2451 exp_get_value_int(subalign, -1,
2452 "subsection alignment",
2454 os->section_alignment = topower(
2455 exp_get_value_int(align, -1,
2456 "section alignment", 0));
2458 os->load_base = ebase;
2465 lang_output_statement_type *new =
2466 new_stat (lang_output_statement, stat_ptr);
2468 new->name = output_filename;
2471 /* Reset the current counters in the regions */
2473 reset_memory_regions ()
2475 lang_memory_region_type *p = lang_memory_region_list;
2477 for (p = lang_memory_region_list;
2478 p != (lang_memory_region_type *) NULL;
2481 p->old_length = (bfd_size_type) (p->current - p->origin);
2482 p->current = p->origin;
2489 lang_reasonable_defaults ();
2490 current_target = default_target;
2492 lang_for_each_statement (ldlang_open_output); /* Open the output file */
2493 /* For each output section statement, create a section in the output
2495 lang_create_output_section_statements ();
2497 ldemul_create_output_section_statements ();
2499 /* Add to the hash table all undefineds on the command line */
2500 lang_place_undefineds ();
2502 /* Create a bfd for each input file */
2503 current_target = default_target;
2504 lang_for_each_statement (open_input_bfds);
2506 /* Build all sets based on the information gathered from the input
2508 ldctor_build_sets ();
2510 /* Size up the common data */
2513 /* Run through the contours of the script and attatch input sections
2514 to the correct output sections
2516 map_input_to_output_sections (statement_list.head, (char *) NULL,
2517 (lang_output_section_statement_type *) NULL);
2520 /* Find any sections not attatched explicitly and handle them */
2521 lang_place_orphans ();
2523 ldemul_before_allocation ();
2525 /* Now run around and relax if we can */
2526 if (command_line.relax)
2528 /* First time round is a trial run to get the 'worst case'
2529 addresses of the objects if there was no relaxing. */
2530 lang_size_sections (statement_list.head,
2532 &(statement_list.head), 0, (bfd_vma) 0, false);
2535 reset_memory_regions ();
2537 /* Keep relaxing until bfd_relax_section gives up. */
2540 relax_again = false;
2542 /* Do all the assignments with our current guesses as to
2544 lang_do_assignments (statement_list.head,
2546 (fill_type) 0, (bfd_vma) 0);
2548 /* Perform another relax pass - this time we know where the
2549 globals are, so can make better guess. */
2550 lang_size_sections (statement_list.head,
2552 &(statement_list.head), 0, (bfd_vma) 0, true);
2554 while (relax_again);
2558 /* Size up the sections. */
2559 lang_size_sections (statement_list.head,
2561 &(statement_list.head), 0, (bfd_vma) 0, false);
2564 /* See if anything special should be done now we know how big
2566 ldemul_after_allocation ();
2568 /* Do all the assignments, now that we know the final restingplaces
2569 of all the symbols */
2571 lang_do_assignments (statement_list.head,
2573 (fill_type) 0, (bfd_vma) 0);
2575 /* Make sure that we're not mixing architectures */
2585 /* EXPORTED TO YACC */
2588 lang_add_wild (section_name, filename)
2589 CONST char *CONST section_name;
2590 CONST char *CONST filename;
2592 lang_wild_statement_type *new = new_stat (lang_wild_statement,
2595 if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0)
2597 placed_commons = true;
2599 if (filename != (char *) NULL)
2601 lang_has_input_file = true;
2603 new->section_name = section_name;
2604 new->filename = filename;
2605 lang_list_init (&new->children);
2609 lang_section_start (name, address)
2611 etree_type * address;
2613 lang_address_statement_type *ad = new_stat (lang_address_statement, stat_ptr);
2615 ad->section_name = name;
2616 ad->address = address;
2620 lang_add_entry (name)
2623 entry_symbol = name;
2627 lang_add_target (name)
2630 lang_target_statement_type *new = new_stat (lang_target_statement,
2646 map_option_f = true;
2657 lang_fill_statement_type *new = new_stat (lang_fill_statement,
2664 lang_add_data (type, exp)
2666 union etree_union *exp;
2669 lang_data_statement_type *new = new_stat (lang_data_statement,
2677 /* Create a new reloc statement. RELOC is the BFD relocation type to
2678 generate. HOWTO is the corresponding howto structure (we could
2679 look this up, but the caller has already done so). SECTION is the
2680 section to generate a reloc against, or NAME is the name of the
2681 symbol to generate a reloc against. Exactly one of SECTION and
2682 NAME must be NULL. ADDEND is an expression for the addend. */
2685 lang_add_reloc (reloc, howto, section, name, addend)
2686 bfd_reloc_code_real_type reloc;
2687 const reloc_howto_type *howto;
2690 union etree_union *addend;
2692 lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
2696 p->section = section;
2698 p->addend_exp = addend;
2700 p->addend_value = 0;
2701 p->output_section = NULL;
2706 lang_add_assignment (exp)
2709 lang_assignment_statement_type *new = new_stat (lang_assignment_statement,
2716 lang_add_attribute (attribute)
2717 enum statement_enum attribute;
2719 new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr);
2726 if (startup_file != (char *) NULL)
2728 einfo ("%P%Fmultiple STARTUP files\n");
2730 first_file->filename = name;
2731 first_file->local_sym_name = name;
2732 first_file->real = true;
2734 startup_file = name;
2741 lang_float_flag = maybe;
2745 lang_leave_output_section_statement (fill, memspec)
2747 CONST char *memspec;
2749 current_section->fill = fill;
2750 current_section->region = lang_memory_region_lookup (memspec);
2751 stat_ptr = &statement_list;
2753 /* We remember if we are closing a .data section, since we use it to
2754 store constructors in */
2755 if (strcmp (current_section->name, ".data") == 0)
2757 end_of_data_section_statement_list = statement_list;
2763 Create an absolute symbol with the given name with the value of the
2764 address of first byte of the section named.
2766 If the symbol already exists, then do nothing.
2769 lang_abs_symbol_at_beginning_of (secname, name)
2770 const char *secname;
2773 struct bfd_link_hash_entry *h;
2775 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
2776 if (h == (struct bfd_link_hash_entry *) NULL)
2777 einfo ("%P%F: bfd_link_hash_lookup failed: %E\n");
2779 if (h->type == bfd_link_hash_new
2780 || h->type == bfd_link_hash_undefined)
2784 h->type = bfd_link_hash_defined;
2786 sec = bfd_get_section_by_name (output_bfd, secname);
2787 if (sec == (asection *) NULL)
2790 h->u.def.value = bfd_get_section_vma (output_bfd, sec);
2792 h->u.def.section = &bfd_abs_section;
2797 Create an absolute symbol with the given name with the value of the
2798 address of the first byte after the end of the section named.
2800 If the symbol already exists, then do nothing.
2803 lang_abs_symbol_at_end_of (secname, name)
2804 const char *secname;
2807 struct bfd_link_hash_entry *h;
2809 h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
2810 if (h == (struct bfd_link_hash_entry *) NULL)
2811 einfo ("%P%F: bfd_link_hash_lookup failed: %E\n");
2813 if (h->type == bfd_link_hash_new
2814 || h->type == bfd_link_hash_undefined)
2818 h->type = bfd_link_hash_defined;
2820 sec = bfd_get_section_by_name (output_bfd, secname);
2821 if (sec == (asection *) NULL)
2824 h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
2825 + bfd_section_size (output_bfd, sec));
2827 h->u.def.section = &bfd_abs_section;
2832 lang_statement_append (list, element, field)
2833 lang_statement_list_type * list;
2834 lang_statement_union_type * element;
2835 lang_statement_union_type ** field;
2837 *(list->tail) = element;
2841 /* Set the output format type. -oformat overrides scripts. */
2843 lang_add_output_format (format, from_script)
2847 if (output_target == NULL || !from_script)
2848 output_target = format;