5097 lines
132 KiB
C
5097 lines
132 KiB
C
/* Linker command language support.
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Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
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2001
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Free Software Foundation, Inc.
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This file is part of GLD, the Gnu Linker.
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GLD is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GLD is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GLD; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libiberty.h"
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#include "obstack.h"
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#include "bfdlink.h"
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#include "ld.h"
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#include "ldmain.h"
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#include "ldgram.h"
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#include "ldexp.h"
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#include "ldlang.h"
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#include "ldlex.h"
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#include "ldmisc.h"
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#include "ldctor.h"
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#include "ldfile.h"
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#include "ldemul.h"
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#include "fnmatch.h"
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#include "demangle.h"
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#include <ctype.h>
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/* FORWARDS */
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static lang_statement_union_type *new_statement
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PARAMS ((enum statement_enum, size_t, lang_statement_list_type *));
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/* LOCALS */
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static struct obstack stat_obstack;
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#define obstack_chunk_alloc xmalloc
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#define obstack_chunk_free free
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static const char *startup_file;
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static lang_statement_list_type input_file_chain;
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static boolean placed_commons = false;
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static lang_output_section_statement_type *default_common_section;
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static boolean map_option_f;
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static bfd_vma print_dot;
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static lang_input_statement_type *first_file;
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static const char *current_target;
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static const char *output_target;
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static lang_statement_list_type statement_list;
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static struct lang_phdr *lang_phdr_list;
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static void lang_for_each_statement_worker
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PARAMS ((void (*) (lang_statement_union_type *),
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lang_statement_union_type *));
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static lang_input_statement_type *new_afile
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PARAMS ((const char *, lang_input_file_enum_type, const char *, boolean));
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static lang_memory_region_type *lang_memory_default PARAMS ((asection *));
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static void lang_map_flags PARAMS ((flagword));
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static void init_os PARAMS ((lang_output_section_statement_type *));
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static void exp_init_os PARAMS ((etree_type *));
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static void section_already_linked PARAMS ((bfd *, asection *, PTR));
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static struct bfd_hash_entry *already_linked_newfunc
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PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
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static void already_linked_table_init PARAMS ((void));
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static void already_linked_table_free PARAMS ((void));
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static boolean wildcardp PARAMS ((const char *));
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static lang_statement_union_type *wild_sort
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PARAMS ((lang_wild_statement_type *, lang_input_statement_type *,
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asection *));
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static void output_section_callback
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PARAMS ((lang_wild_statement_type *, asection *,
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lang_input_statement_type *, PTR));
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static lang_input_statement_type *lookup_name PARAMS ((const char *));
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static void load_symbols
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PARAMS ((lang_input_statement_type *, lang_statement_list_type *));
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static void wild
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PARAMS ((lang_wild_statement_type *, const char *, const char *,
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const char *, lang_output_section_statement_type *));
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static bfd *open_output PARAMS ((const char *));
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static void ldlang_open_output PARAMS ((lang_statement_union_type *));
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static void open_input_bfds PARAMS ((lang_statement_union_type *, boolean));
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static void lang_reasonable_defaults PARAMS ((void));
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static void lang_place_undefineds PARAMS ((void));
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static void map_input_to_output_sections
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PARAMS ((lang_statement_union_type *, const char *,
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lang_output_section_statement_type *));
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static void print_output_section_statement
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PARAMS ((lang_output_section_statement_type *));
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static void print_assignment
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PARAMS ((lang_assignment_statement_type *,
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lang_output_section_statement_type *));
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static void print_input_statement PARAMS ((lang_input_statement_type *));
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static boolean print_one_symbol PARAMS ((struct bfd_link_hash_entry *, PTR));
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static void print_input_section PARAMS ((lang_input_section_type *));
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static void print_fill_statement PARAMS ((lang_fill_statement_type *));
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static void print_data_statement PARAMS ((lang_data_statement_type *));
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static void print_address_statement PARAMS ((lang_address_statement_type *));
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static void print_reloc_statement PARAMS ((lang_reloc_statement_type *));
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static void print_padding_statement PARAMS ((lang_padding_statement_type *));
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static void print_wild_statement
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PARAMS ((lang_wild_statement_type *, lang_output_section_statement_type *));
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static void print_group
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PARAMS ((lang_group_statement_type *, lang_output_section_statement_type *));
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static void print_statement
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PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *));
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static void print_statement_list
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PARAMS ((lang_statement_union_type *, lang_output_section_statement_type *));
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static void print_statements PARAMS ((void));
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static bfd_vma insert_pad
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PARAMS ((lang_statement_union_type **, fill_type,
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unsigned int, asection *, bfd_vma));
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static bfd_vma size_input_section
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PARAMS ((lang_statement_union_type **, lang_output_section_statement_type *,
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fill_type, bfd_vma, boolean));
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static void lang_finish PARAMS ((void));
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static void ignore_bfd_errors PARAMS ((const char *, ...));
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static void lang_check PARAMS ((void));
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static void lang_common PARAMS ((void));
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static boolean lang_one_common PARAMS ((struct bfd_link_hash_entry *, PTR));
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static void lang_place_orphans PARAMS ((void));
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static int topower PARAMS ((int));
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static void lang_set_startof PARAMS ((void));
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static void reset_memory_regions PARAMS ((void));
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static void gc_section_callback
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PARAMS ((lang_wild_statement_type *, asection *,
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lang_input_statement_type *, PTR));
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static void lang_record_phdrs PARAMS ((void));
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static void lang_gc_wild
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PARAMS ((lang_wild_statement_type *, const char *, const char *));
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static void lang_gc_sections_1 PARAMS ((lang_statement_union_type *));
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static void lang_gc_sections PARAMS ((void));
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static int lang_vers_match_lang_c
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PARAMS ((struct bfd_elf_version_expr *, const char *));
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static int lang_vers_match_lang_cplusplus
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PARAMS ((struct bfd_elf_version_expr *, const char *));
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static int lang_vers_match_lang_java
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PARAMS ((struct bfd_elf_version_expr *, const char *));
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static void lang_do_version_exports_section PARAMS ((void));
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static void lang_check_section_addresses PARAMS ((void));
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static void os_region_check
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PARAMS ((lang_output_section_statement_type *,
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struct memory_region_struct *, etree_type *, bfd_vma));
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typedef void (*callback_t) PARAMS ((lang_wild_statement_type *,
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asection *, lang_input_statement_type *,
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PTR));
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static void walk_wild
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PARAMS ((lang_wild_statement_type *, const char *, const char *,
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callback_t, PTR));
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static void walk_wild_section
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PARAMS ((lang_wild_statement_type *, const char *,
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lang_input_statement_type *, callback_t, PTR));
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static void walk_wild_file
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PARAMS ((lang_wild_statement_type *, const char *,
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lang_input_statement_type *, callback_t, PTR));
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static int get_target PARAMS ((const bfd_target *, PTR));
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static void stricpy PARAMS ((char *, char *));
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static void strcut PARAMS ((char *, char *));
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static int name_compare PARAMS ((char *, char *));
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static int closest_target_match PARAMS ((const bfd_target *, PTR));
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static char * get_first_input_target PARAMS ((void));
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/* EXPORTS */
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lang_output_section_statement_type *abs_output_section;
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lang_statement_list_type lang_output_section_statement;
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lang_statement_list_type *stat_ptr = &statement_list;
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lang_statement_list_type file_chain = { NULL, NULL };
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const char *entry_symbol = NULL;
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boolean entry_from_cmdline;
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boolean lang_has_input_file = false;
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boolean had_output_filename = false;
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boolean lang_float_flag = false;
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boolean delete_output_file_on_failure = false;
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struct lang_nocrossrefs *nocrossref_list;
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struct unique_sections *unique_section_list;
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etree_type *base; /* Relocation base - or null */
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#if defined (__STDC__) || defined (ALMOST_STDC)
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#define cat(a,b) a##b
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#else
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#define cat(a,b) a/**/b
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#endif
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/* Don't beautify the line below with "innocent" whitespace, it breaks
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the K&R C preprocessor! */
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#define new_stat(x, y) \
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(cat (x,_type)*) new_statement (cat (x,_enum), sizeof (cat (x,_type)), y)
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#define outside_section_address(q) \
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((q)->output_offset + (q)->output_section->vma)
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#define outside_symbol_address(q) \
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((q)->value + outside_section_address (q->section))
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#define SECTION_NAME_MAP_LENGTH (16)
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PTR
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stat_alloc (size)
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size_t size;
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{
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return obstack_alloc (&stat_obstack, size);
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}
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boolean
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unique_section_p (secnam)
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const char *secnam;
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{
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struct unique_sections *unam;
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for (unam = unique_section_list; unam; unam = unam->next)
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if (wildcardp (unam->name)
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? fnmatch (unam->name, secnam, 0) == 0
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: strcmp (unam->name, secnam) == 0)
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{
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return true;
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}
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return false;
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}
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/* Generic traversal routines for finding matching sections. */
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static void
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walk_wild_section (ptr, section, file, callback, data)
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lang_wild_statement_type *ptr;
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const char *section;
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lang_input_statement_type *file;
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callback_t callback;
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PTR data;
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{
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/* Don't process sections from files which were excluded. */
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if (ptr->exclude_filename_list != NULL)
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{
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struct name_list *list_tmp;
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for (list_tmp = ptr->exclude_filename_list;
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list_tmp;
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list_tmp = list_tmp->next)
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{
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boolean match;
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if (wildcardp (list_tmp->name))
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match = fnmatch (list_tmp->name, file->filename, 0) == 0;
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else
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match = strcmp (list_tmp->name, file->filename) == 0;
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if (match)
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return;
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}
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}
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if (file->just_syms_flag == false)
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{
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register asection *s;
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boolean wildcard = false;
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if (section != NULL)
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wildcard = wildcardp (section);
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for (s = file->the_bfd->sections; s != NULL; s = s->next)
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{
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boolean match;
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const char *sname = bfd_get_section_name (file->the_bfd, s);
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if (section == NULL)
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match = true;
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else if (wildcard)
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match = fnmatch (section, sname, 0) == 0;
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else
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match = strcmp (section, sname) == 0;
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/* If this is a wild-card output section statement, exclude
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sections that match UNIQUE_SECTION_LIST. */
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if (match && (data == NULL || !unique_section_p (sname)))
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(*callback) (ptr, s, file, data);
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}
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}
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}
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/* Handle a wild statement for a single file F. */
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static void
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walk_wild_file (s, section, f, callback, data)
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lang_wild_statement_type *s;
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const char *section;
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lang_input_statement_type *f;
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callback_t callback;
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PTR data;
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{
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if (f->the_bfd == NULL
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|| ! bfd_check_format (f->the_bfd, bfd_archive))
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walk_wild_section (s, section, f, callback, data);
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else
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{
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bfd *member;
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/* This is an archive file. We must map each member of the
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archive separately. */
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member = bfd_openr_next_archived_file (f->the_bfd, (bfd *) NULL);
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while (member != NULL)
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{
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/* When lookup_name is called, it will call the add_symbols
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entry point for the archive. For each element of the
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archive which is included, BFD will call ldlang_add_file,
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which will set the usrdata field of the member to the
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lang_input_statement. */
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if (member->usrdata != NULL)
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{
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walk_wild_section (s, section,
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(lang_input_statement_type *) member->usrdata,
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callback, data);
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}
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member = bfd_openr_next_archived_file (f->the_bfd, member);
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}
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}
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}
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static void
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walk_wild (s, section, file, callback, data)
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lang_wild_statement_type *s;
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const char *section;
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const char *file;
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callback_t callback;
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PTR data;
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{
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||
if (file == (char *) NULL)
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||
{
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/* Perform the iteration over all files in the list. */
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LANG_FOR_EACH_INPUT_STATEMENT (f)
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{
|
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walk_wild_file (s, section, f, callback, data);
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}
|
||
}
|
||
else if (wildcardp (file))
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{
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LANG_FOR_EACH_INPUT_STATEMENT (f)
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{
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if (fnmatch (file, f->filename, FNM_FILE_NAME) == 0)
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walk_wild_file (s, section, f, callback, data);
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}
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||
}
|
||
else
|
||
{
|
||
lang_input_statement_type *f;
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||
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||
/* Perform the iteration over a single file. */
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f = lookup_name (file);
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walk_wild_file (s, section, f, callback, data);
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}
|
||
}
|
||
|
||
/* lang_for_each_statement walks the parse tree and calls the provided
|
||
function for each node. */
|
||
|
||
static void
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lang_for_each_statement_worker (func, s)
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void (*func) PARAMS ((lang_statement_union_type *));
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lang_statement_union_type *s;
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{
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||
for (; s != (lang_statement_union_type *) NULL; s = s->next)
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||
{
|
||
func (s);
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||
|
||
switch (s->header.type)
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||
{
|
||
case lang_constructors_statement_enum:
|
||
lang_for_each_statement_worker (func, constructor_list.head);
|
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break;
|
||
case lang_output_section_statement_enum:
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||
lang_for_each_statement_worker
|
||
(func,
|
||
s->output_section_statement.children.head);
|
||
break;
|
||
case lang_wild_statement_enum:
|
||
lang_for_each_statement_worker
|
||
(func,
|
||
s->wild_statement.children.head);
|
||
break;
|
||
case lang_group_statement_enum:
|
||
lang_for_each_statement_worker (func,
|
||
s->group_statement.children.head);
|
||
break;
|
||
case lang_data_statement_enum:
|
||
case lang_reloc_statement_enum:
|
||
case lang_object_symbols_statement_enum:
|
||
case lang_output_statement_enum:
|
||
case lang_target_statement_enum:
|
||
case lang_input_section_enum:
|
||
case lang_input_statement_enum:
|
||
case lang_assignment_statement_enum:
|
||
case lang_padding_statement_enum:
|
||
case lang_address_statement_enum:
|
||
case lang_fill_statement_enum:
|
||
break;
|
||
default:
|
||
FAIL ();
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
lang_for_each_statement (func)
|
||
void (*func) PARAMS ((lang_statement_union_type *));
|
||
{
|
||
lang_for_each_statement_worker (func, statement_list.head);
|
||
}
|
||
|
||
/*----------------------------------------------------------------------*/
|
||
|
||
void
|
||
lang_list_init (list)
|
||
lang_statement_list_type *list;
|
||
{
|
||
list->head = (lang_statement_union_type *) NULL;
|
||
list->tail = &list->head;
|
||
}
|
||
|
||
/* Build a new statement node for the parse tree. */
|
||
|
||
static lang_statement_union_type *
|
||
new_statement (type, size, list)
|
||
enum statement_enum type;
|
||
size_t size;
|
||
lang_statement_list_type *list;
|
||
{
|
||
lang_statement_union_type *new = (lang_statement_union_type *)
|
||
stat_alloc (size);
|
||
|
||
new->header.type = type;
|
||
new->header.next = (lang_statement_union_type *) NULL;
|
||
lang_statement_append (list, new, &new->header.next);
|
||
return new;
|
||
}
|
||
|
||
/* Build a new input file node for the language. There are several
|
||
ways in which we treat an input file, eg, we only look at symbols,
|
||
or prefix it with a -l etc.
|
||
|
||
We can be supplied with requests for input files more than once;
|
||
they may, for example be split over serveral lines like foo.o(.text)
|
||
foo.o(.data) etc, so when asked for a file we check that we haven't
|
||
got it already so we don't duplicate the bfd. */
|
||
|
||
static lang_input_statement_type *
|
||
new_afile (name, file_type, target, add_to_list)
|
||
const char *name;
|
||
lang_input_file_enum_type file_type;
|
||
const char *target;
|
||
boolean add_to_list;
|
||
{
|
||
lang_input_statement_type *p;
|
||
|
||
if (add_to_list)
|
||
p = new_stat (lang_input_statement, stat_ptr);
|
||
else
|
||
{
|
||
p = ((lang_input_statement_type *)
|
||
stat_alloc (sizeof (lang_input_statement_type)));
|
||
p->header.next = NULL;
|
||
}
|
||
|
||
lang_has_input_file = true;
|
||
p->target = target;
|
||
switch (file_type)
|
||
{
|
||
case lang_input_file_is_symbols_only_enum:
|
||
p->filename = name;
|
||
p->is_archive = false;
|
||
p->real = true;
|
||
p->local_sym_name = name;
|
||
p->just_syms_flag = true;
|
||
p->search_dirs_flag = false;
|
||
break;
|
||
case lang_input_file_is_fake_enum:
|
||
p->filename = name;
|
||
p->is_archive = false;
|
||
p->real = false;
|
||
p->local_sym_name = name;
|
||
p->just_syms_flag = false;
|
||
p->search_dirs_flag = false;
|
||
break;
|
||
case lang_input_file_is_l_enum:
|
||
p->is_archive = true;
|
||
p->filename = name;
|
||
p->real = true;
|
||
p->local_sym_name = concat ("-l", name, (const char *) NULL);
|
||
p->just_syms_flag = false;
|
||
p->search_dirs_flag = true;
|
||
break;
|
||
case lang_input_file_is_marker_enum:
|
||
p->filename = name;
|
||
p->is_archive = false;
|
||
p->real = false;
|
||
p->local_sym_name = name;
|
||
p->just_syms_flag = false;
|
||
p->search_dirs_flag = true;
|
||
break;
|
||
case lang_input_file_is_search_file_enum:
|
||
p->filename = name;
|
||
p->is_archive = false;
|
||
p->real = true;
|
||
p->local_sym_name = name;
|
||
p->just_syms_flag = false;
|
||
p->search_dirs_flag = true;
|
||
break;
|
||
case lang_input_file_is_file_enum:
|
||
p->filename = name;
|
||
p->is_archive = false;
|
||
p->real = true;
|
||
p->local_sym_name = name;
|
||
p->just_syms_flag = false;
|
||
p->search_dirs_flag = false;
|
||
break;
|
||
default:
|
||
FAIL ();
|
||
}
|
||
p->the_bfd = (bfd *) NULL;
|
||
p->asymbols = (asymbol **) NULL;
|
||
p->next_real_file = (lang_statement_union_type *) NULL;
|
||
p->next = (lang_statement_union_type *) NULL;
|
||
p->symbol_count = 0;
|
||
p->dynamic = config.dynamic_link;
|
||
p->whole_archive = whole_archive;
|
||
p->loaded = false;
|
||
lang_statement_append (&input_file_chain,
|
||
(lang_statement_union_type *) p,
|
||
&p->next_real_file);
|
||
return p;
|
||
}
|
||
|
||
lang_input_statement_type *
|
||
lang_add_input_file (name, file_type, target)
|
||
const char *name;
|
||
lang_input_file_enum_type file_type;
|
||
const char *target;
|
||
{
|
||
lang_has_input_file = true;
|
||
return new_afile (name, file_type, target, true);
|
||
}
|
||
|
||
/* Build enough state so that the parser can build its tree. */
|
||
|
||
void
|
||
lang_init ()
|
||
{
|
||
obstack_begin (&stat_obstack, 1000);
|
||
|
||
stat_ptr = &statement_list;
|
||
|
||
lang_list_init (stat_ptr);
|
||
|
||
lang_list_init (&input_file_chain);
|
||
lang_list_init (&lang_output_section_statement);
|
||
lang_list_init (&file_chain);
|
||
first_file = lang_add_input_file ((char *) NULL,
|
||
lang_input_file_is_marker_enum,
|
||
(char *) NULL);
|
||
abs_output_section =
|
||
lang_output_section_statement_lookup (BFD_ABS_SECTION_NAME);
|
||
|
||
abs_output_section->bfd_section = bfd_abs_section_ptr;
|
||
|
||
}
|
||
|
||
/*----------------------------------------------------------------------
|
||
A region is an area of memory declared with the
|
||
MEMORY { name:org=exp, len=exp ... }
|
||
syntax.
|
||
|
||
We maintain a list of all the regions here.
|
||
|
||
If no regions are specified in the script, then the default is used
|
||
which is created when looked up to be the entire data space. */
|
||
|
||
static lang_memory_region_type *lang_memory_region_list;
|
||
static lang_memory_region_type **lang_memory_region_list_tail = &lang_memory_region_list;
|
||
|
||
lang_memory_region_type *
|
||
lang_memory_region_lookup (name)
|
||
const char *const name;
|
||
{
|
||
lang_memory_region_type *p;
|
||
|
||
for (p = lang_memory_region_list;
|
||
p != (lang_memory_region_type *) NULL;
|
||
p = p->next)
|
||
{
|
||
if (strcmp (p->name, name) == 0)
|
||
{
|
||
return p;
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
/* This code used to always use the first region in the list as the
|
||
default region. I changed it to instead use a region
|
||
encompassing all of memory as the default region. This permits
|
||
NOLOAD sections to work reasonably without requiring a region.
|
||
People should specify what region they mean, if they really want
|
||
a region. */
|
||
if (strcmp (name, "*default*") == 0)
|
||
{
|
||
if (lang_memory_region_list != (lang_memory_region_type *) NULL)
|
||
{
|
||
return lang_memory_region_list;
|
||
}
|
||
}
|
||
#endif
|
||
|
||
{
|
||
lang_memory_region_type *new =
|
||
(lang_memory_region_type *) stat_alloc (sizeof (lang_memory_region_type));
|
||
|
||
new->name = xstrdup (name);
|
||
new->next = (lang_memory_region_type *) NULL;
|
||
|
||
*lang_memory_region_list_tail = new;
|
||
lang_memory_region_list_tail = &new->next;
|
||
new->origin = 0;
|
||
new->flags = 0;
|
||
new->not_flags = 0;
|
||
new->length = ~(bfd_size_type) 0;
|
||
new->current = 0;
|
||
new->had_full_message = false;
|
||
|
||
return new;
|
||
}
|
||
}
|
||
|
||
static lang_memory_region_type *
|
||
lang_memory_default (section)
|
||
asection *section;
|
||
{
|
||
lang_memory_region_type *p;
|
||
|
||
flagword sec_flags = section->flags;
|
||
|
||
/* Override SEC_DATA to mean a writable section. */
|
||
if ((sec_flags & (SEC_ALLOC | SEC_READONLY | SEC_CODE)) == SEC_ALLOC)
|
||
sec_flags |= SEC_DATA;
|
||
|
||
for (p = lang_memory_region_list;
|
||
p != (lang_memory_region_type *) NULL;
|
||
p = p->next)
|
||
{
|
||
if ((p->flags & sec_flags) != 0
|
||
&& (p->not_flags & sec_flags) == 0)
|
||
{
|
||
return p;
|
||
}
|
||
}
|
||
return lang_memory_region_lookup ("*default*");
|
||
}
|
||
|
||
lang_output_section_statement_type *
|
||
lang_output_section_find (name)
|
||
const char *const name;
|
||
{
|
||
lang_statement_union_type *u;
|
||
lang_output_section_statement_type *lookup;
|
||
|
||
for (u = lang_output_section_statement.head;
|
||
u != (lang_statement_union_type *) NULL;
|
||
u = lookup->next)
|
||
{
|
||
lookup = &u->output_section_statement;
|
||
if (strcmp (name, lookup->name) == 0)
|
||
{
|
||
return lookup;
|
||
}
|
||
}
|
||
return (lang_output_section_statement_type *) NULL;
|
||
}
|
||
|
||
lang_output_section_statement_type *
|
||
lang_output_section_statement_lookup (name)
|
||
const char *const name;
|
||
{
|
||
lang_output_section_statement_type *lookup;
|
||
|
||
lookup = lang_output_section_find (name);
|
||
if (lookup == (lang_output_section_statement_type *) NULL)
|
||
{
|
||
|
||
lookup = (lang_output_section_statement_type *)
|
||
new_stat (lang_output_section_statement, stat_ptr);
|
||
lookup->region = (lang_memory_region_type *) NULL;
|
||
lookup->lma_region = (lang_memory_region_type *) NULL;
|
||
lookup->fill = 0;
|
||
lookup->block_value = 1;
|
||
lookup->name = name;
|
||
|
||
lookup->next = (lang_statement_union_type *) NULL;
|
||
lookup->bfd_section = (asection *) NULL;
|
||
lookup->processed = false;
|
||
lookup->sectype = normal_section;
|
||
lookup->addr_tree = (etree_type *) NULL;
|
||
lang_list_init (&lookup->children);
|
||
|
||
lookup->memspec = (const char *) NULL;
|
||
lookup->flags = 0;
|
||
lookup->subsection_alignment = -1;
|
||
lookup->section_alignment = -1;
|
||
lookup->load_base = (union etree_union *) NULL;
|
||
lookup->phdrs = NULL;
|
||
|
||
lang_statement_append (&lang_output_section_statement,
|
||
(lang_statement_union_type *) lookup,
|
||
&lookup->next);
|
||
}
|
||
return lookup;
|
||
}
|
||
|
||
static void
|
||
lang_map_flags (flag)
|
||
flagword flag;
|
||
{
|
||
if (flag & SEC_ALLOC)
|
||
minfo ("a");
|
||
|
||
if (flag & SEC_CODE)
|
||
minfo ("x");
|
||
|
||
if (flag & SEC_READONLY)
|
||
minfo ("r");
|
||
|
||
if (flag & SEC_DATA)
|
||
minfo ("w");
|
||
|
||
if (flag & SEC_LOAD)
|
||
minfo ("l");
|
||
}
|
||
|
||
void
|
||
lang_map ()
|
||
{
|
||
lang_memory_region_type *m;
|
||
|
||
minfo (_("\nMemory Configuration\n\n"));
|
||
fprintf (config.map_file, "%-16s %-18s %-18s %s\n",
|
||
_("Name"), _("Origin"), _("Length"), _("Attributes"));
|
||
|
||
for (m = lang_memory_region_list;
|
||
m != (lang_memory_region_type *) NULL;
|
||
m = m->next)
|
||
{
|
||
char buf[100];
|
||
int len;
|
||
|
||
fprintf (config.map_file, "%-16s ", m->name);
|
||
|
||
sprintf_vma (buf, m->origin);
|
||
minfo ("0x%s ", buf);
|
||
len = strlen (buf);
|
||
while (len < 16)
|
||
{
|
||
print_space ();
|
||
++len;
|
||
}
|
||
|
||
minfo ("0x%V", m->length);
|
||
if (m->flags || m->not_flags)
|
||
{
|
||
#ifndef BFD64
|
||
minfo (" ");
|
||
#endif
|
||
if (m->flags)
|
||
{
|
||
print_space ();
|
||
lang_map_flags (m->flags);
|
||
}
|
||
|
||
if (m->not_flags)
|
||
{
|
||
minfo (" !");
|
||
lang_map_flags (m->not_flags);
|
||
}
|
||
}
|
||
|
||
print_nl ();
|
||
}
|
||
|
||
fprintf (config.map_file, _("\nLinker script and memory map\n\n"));
|
||
|
||
print_statements ();
|
||
}
|
||
|
||
/* Initialize an output section. */
|
||
|
||
static void
|
||
init_os (s)
|
||
lang_output_section_statement_type *s;
|
||
{
|
||
section_userdata_type *new;
|
||
|
||
if (s->bfd_section != NULL)
|
||
return;
|
||
|
||
if (strcmp (s->name, DISCARD_SECTION_NAME) == 0)
|
||
einfo (_("%P%F: Illegal use of `%s' section"), DISCARD_SECTION_NAME);
|
||
|
||
new = ((section_userdata_type *)
|
||
stat_alloc (sizeof (section_userdata_type)));
|
||
|
||
s->bfd_section = bfd_get_section_by_name (output_bfd, s->name);
|
||
if (s->bfd_section == (asection *) NULL)
|
||
s->bfd_section = bfd_make_section (output_bfd, s->name);
|
||
if (s->bfd_section == (asection *) NULL)
|
||
{
|
||
einfo (_("%P%F: output format %s cannot represent section called %s\n"),
|
||
output_bfd->xvec->name, s->name);
|
||
}
|
||
s->bfd_section->output_section = s->bfd_section;
|
||
|
||
/* We initialize an output sections output offset to minus its own
|
||
vma to allow us to output a section through itself. */
|
||
s->bfd_section->output_offset = 0;
|
||
get_userdata (s->bfd_section) = (PTR) new;
|
||
|
||
/* If there is a base address, make sure that any sections it might
|
||
mention are initialized. */
|
||
if (s->addr_tree != NULL)
|
||
exp_init_os (s->addr_tree);
|
||
}
|
||
|
||
/* Make sure that all output sections mentioned in an expression are
|
||
initialized. */
|
||
|
||
static void
|
||
exp_init_os (exp)
|
||
etree_type *exp;
|
||
{
|
||
switch (exp->type.node_class)
|
||
{
|
||
case etree_assign:
|
||
exp_init_os (exp->assign.src);
|
||
break;
|
||
|
||
case etree_binary:
|
||
exp_init_os (exp->binary.lhs);
|
||
exp_init_os (exp->binary.rhs);
|
||
break;
|
||
|
||
case etree_trinary:
|
||
exp_init_os (exp->trinary.cond);
|
||
exp_init_os (exp->trinary.lhs);
|
||
exp_init_os (exp->trinary.rhs);
|
||
break;
|
||
|
||
case etree_unary:
|
||
exp_init_os (exp->unary.child);
|
||
break;
|
||
|
||
case etree_name:
|
||
switch (exp->type.node_code)
|
||
{
|
||
case ADDR:
|
||
case LOADADDR:
|
||
case SIZEOF:
|
||
{
|
||
lang_output_section_statement_type *os;
|
||
|
||
os = lang_output_section_find (exp->name.name);
|
||
if (os != NULL && os->bfd_section == NULL)
|
||
init_os (os);
|
||
}
|
||
}
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Sections marked with the SEC_LINK_ONCE flag should only be linked
|
||
once into the output. This routine checks each section, and
|
||
arrange to discard it if a section of the same name has already
|
||
been linked. If the section has COMDAT information, then it uses
|
||
that to decide whether the section should be included. This code
|
||
assumes that all relevant sections have the SEC_LINK_ONCE flag set;
|
||
that is, it does not depend solely upon the section name.
|
||
section_already_linked is called via bfd_map_over_sections. */
|
||
|
||
/* This is the shape of the elements inside the already_linked hash
|
||
table. It maps a name onto a list of already_linked elements with
|
||
the same name. It's possible to get more than one element in a
|
||
list if the COMDAT sections have different names. */
|
||
|
||
struct already_linked_hash_entry
|
||
{
|
||
struct bfd_hash_entry root;
|
||
struct already_linked *entry;
|
||
};
|
||
|
||
struct already_linked
|
||
{
|
||
struct already_linked *next;
|
||
asection *sec;
|
||
};
|
||
|
||
/* The hash table. */
|
||
|
||
static struct bfd_hash_table already_linked_table;
|
||
|
||
static void
|
||
section_already_linked (abfd, sec, data)
|
||
bfd *abfd;
|
||
asection *sec;
|
||
PTR data;
|
||
{
|
||
lang_input_statement_type *entry = (lang_input_statement_type *) data;
|
||
flagword flags;
|
||
const char *name;
|
||
struct already_linked *l;
|
||
struct already_linked_hash_entry *already_linked_list;
|
||
|
||
/* If we are only reading symbols from this object, then we want to
|
||
discard all sections. */
|
||
if (entry->just_syms_flag)
|
||
{
|
||
sec->output_section = bfd_abs_section_ptr;
|
||
sec->output_offset = sec->vma;
|
||
return;
|
||
}
|
||
|
||
flags = bfd_get_section_flags (abfd, sec);
|
||
|
||
if ((flags & SEC_LINK_ONCE) == 0)
|
||
return;
|
||
|
||
/* FIXME: When doing a relocatable link, we may have trouble
|
||
copying relocations in other sections that refer to local symbols
|
||
in the section being discarded. Those relocations will have to
|
||
be converted somehow; as of this writing I'm not sure that any of
|
||
the backends handle that correctly.
|
||
|
||
It is tempting to instead not discard link once sections when
|
||
doing a relocatable link (technically, they should be discarded
|
||
whenever we are building constructors). However, that fails,
|
||
because the linker winds up combining all the link once sections
|
||
into a single large link once section, which defeats the purpose
|
||
of having link once sections in the first place.
|
||
|
||
Also, not merging link once sections in a relocatable link
|
||
causes trouble for MIPS ELF, which relies in link once semantics
|
||
to handle the .reginfo section correctly. */
|
||
|
||
name = bfd_get_section_name (abfd, sec);
|
||
|
||
already_linked_list =
|
||
((struct already_linked_hash_entry *)
|
||
bfd_hash_lookup (&already_linked_table, name, true, false));
|
||
|
||
for (l = already_linked_list->entry; l != NULL; l = l->next)
|
||
{
|
||
if (sec->comdat == NULL
|
||
|| l->sec->comdat == NULL
|
||
|| strcmp (sec->comdat->name, l->sec->comdat->name) == 0)
|
||
{
|
||
/* The section has already been linked. See if we should
|
||
issue a warning. */
|
||
switch (flags & SEC_LINK_DUPLICATES)
|
||
{
|
||
default:
|
||
abort ();
|
||
|
||
case SEC_LINK_DUPLICATES_DISCARD:
|
||
break;
|
||
|
||
case SEC_LINK_DUPLICATES_ONE_ONLY:
|
||
if (sec->comdat == NULL)
|
||
einfo (_("%P: %B: warning: ignoring duplicate section `%s'\n"),
|
||
abfd, name);
|
||
else
|
||
einfo (_("%P: %B: warning: ignoring duplicate `%s' section symbol `%s'\n"),
|
||
abfd, name, sec->comdat->name);
|
||
break;
|
||
|
||
case SEC_LINK_DUPLICATES_SAME_CONTENTS:
|
||
/* FIXME: We should really dig out the contents of both
|
||
sections and memcmp them. The COFF/PE spec says that
|
||
the Microsoft linker does not implement this
|
||
correctly, so I'm not going to bother doing it
|
||
either. */
|
||
/* Fall through. */
|
||
case SEC_LINK_DUPLICATES_SAME_SIZE:
|
||
if (bfd_section_size (abfd, sec)
|
||
!= bfd_section_size (l->sec->owner, l->sec))
|
||
einfo (_("%P: %B: warning: duplicate section `%s' has different size\n"),
|
||
abfd, name);
|
||
break;
|
||
}
|
||
|
||
/* Set the output_section field so that wild_doit does not
|
||
create a lang_input_section structure for this section.
|
||
Since there might be a symbol in the section being
|
||
discarded, we must retain a pointer to the section which
|
||
we are really going to use. */
|
||
sec->output_section = bfd_abs_section_ptr;
|
||
sec->kept_section = l->sec;
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
/* This is the first section with this name. Record it. Allocate
|
||
the memory from the same obstack as the hash table is kept in. */
|
||
|
||
l = ((struct already_linked *)
|
||
bfd_hash_allocate (&already_linked_table, sizeof *l));
|
||
|
||
l->sec = sec;
|
||
l->next = already_linked_list->entry;
|
||
already_linked_list->entry = l;
|
||
}
|
||
|
||
/* Support routines for the hash table used by section_already_linked,
|
||
initialize the table, fill in an entry and remove the table. */
|
||
|
||
static struct bfd_hash_entry *
|
||
already_linked_newfunc (entry, table, string)
|
||
struct bfd_hash_entry *entry ATTRIBUTE_UNUSED;
|
||
struct bfd_hash_table *table;
|
||
const char *string ATTRIBUTE_UNUSED;
|
||
{
|
||
struct already_linked_hash_entry *ret =
|
||
bfd_hash_allocate (table, sizeof (struct already_linked_hash_entry));
|
||
|
||
ret->entry = NULL;
|
||
|
||
return (struct bfd_hash_entry *) ret;
|
||
}
|
||
|
||
static void
|
||
already_linked_table_init ()
|
||
{
|
||
if (! bfd_hash_table_init_n (&already_linked_table,
|
||
already_linked_newfunc,
|
||
42))
|
||
einfo (_("%P%F: Failed to create hash table\n"));
|
||
}
|
||
|
||
static void
|
||
already_linked_table_free ()
|
||
{
|
||
bfd_hash_table_free (&already_linked_table);
|
||
}
|
||
|
||
/* The wild routines.
|
||
|
||
These expand statements like *(.text) and foo.o to a list of
|
||
explicit actions, like foo.o(.text), bar.o(.text) and
|
||
foo.o(.text, .data). */
|
||
|
||
/* Return true if the PATTERN argument is a wildcard pattern.
|
||
Although backslashes are treated specially if a pattern contains
|
||
wildcards, we do not consider the mere presence of a backslash to
|
||
be enough to cause the the pattern to be treated as a wildcard.
|
||
That lets us handle DOS filenames more naturally. */
|
||
|
||
static boolean
|
||
wildcardp (pattern)
|
||
const char *pattern;
|
||
{
|
||
const char *s;
|
||
|
||
for (s = pattern; *s != '\0'; ++s)
|
||
if (*s == '?'
|
||
|| *s == '*'
|
||
|| *s == '[')
|
||
return true;
|
||
return false;
|
||
}
|
||
|
||
/* Add SECTION to the output section OUTPUT. Do this by creating a
|
||
lang_input_section statement which is placed at PTR. FILE is the
|
||
input file which holds SECTION. */
|
||
|
||
void
|
||
wild_doit (ptr, section, output, file)
|
||
lang_statement_list_type *ptr;
|
||
asection *section;
|
||
lang_output_section_statement_type *output;
|
||
lang_input_statement_type *file;
|
||
{
|
||
flagword flags;
|
||
boolean discard;
|
||
|
||
flags = bfd_get_section_flags (section->owner, section);
|
||
|
||
discard = false;
|
||
|
||
/* If we are doing a final link, discard sections marked with
|
||
SEC_EXCLUDE. */
|
||
if (! link_info.relocateable
|
||
&& (flags & SEC_EXCLUDE) != 0)
|
||
discard = true;
|
||
|
||
/* Discard input sections which are assigned to a section named
|
||
DISCARD_SECTION_NAME. */
|
||
if (strcmp (output->name, DISCARD_SECTION_NAME) == 0)
|
||
discard = true;
|
||
|
||
/* Discard debugging sections if we are stripping debugging
|
||
information. */
|
||
if ((link_info.strip == strip_debugger || link_info.strip == strip_all)
|
||
&& (flags & SEC_DEBUGGING) != 0)
|
||
discard = true;
|
||
|
||
if (discard)
|
||
{
|
||
if (section->output_section == NULL)
|
||
{
|
||
/* This prevents future calls from assigning this section. */
|
||
section->output_section = bfd_abs_section_ptr;
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (section->output_section == NULL)
|
||
{
|
||
boolean first;
|
||
lang_input_section_type *new;
|
||
flagword flags;
|
||
|
||
if (output->bfd_section == NULL)
|
||
init_os (output);
|
||
|
||
first = ! output->bfd_section->linker_has_input;
|
||
output->bfd_section->linker_has_input = 1;
|
||
|
||
/* Add a section reference to the list. */
|
||
new = new_stat (lang_input_section, ptr);
|
||
|
||
new->section = section;
|
||
new->ifile = file;
|
||
section->output_section = output->bfd_section;
|
||
|
||
flags = section->flags;
|
||
|
||
/* We don't copy the SEC_NEVER_LOAD flag from an input section
|
||
to an output section, because we want to be able to include a
|
||
SEC_NEVER_LOAD section in the middle of an otherwise loaded
|
||
section (I don't know why we want to do this, but we do).
|
||
build_link_order in ldwrite.c handles this case by turning
|
||
the embedded SEC_NEVER_LOAD section into a fill. */
|
||
|
||
flags &= ~ SEC_NEVER_LOAD;
|
||
|
||
/* If final link, don't copy the SEC_LINK_ONCE flags, they've
|
||
already been processed. One reason to do this is that on pe
|
||
format targets, .text$foo sections go into .text and it's odd
|
||
to see .text with SEC_LINK_ONCE set. */
|
||
|
||
if (! link_info.relocateable)
|
||
flags &= ~ (SEC_LINK_ONCE | SEC_LINK_DUPLICATES);
|
||
|
||
/* If this is not the first input section, and the SEC_READONLY
|
||
flag is not currently set, then don't set it just because the
|
||
input section has it set. */
|
||
|
||
if (! first && (section->output_section->flags & SEC_READONLY) == 0)
|
||
flags &= ~ SEC_READONLY;
|
||
|
||
section->output_section->flags |= flags;
|
||
|
||
/* If SEC_READONLY is not set in the input section, then clear
|
||
it from the output section. */
|
||
if ((section->flags & SEC_READONLY) == 0)
|
||
section->output_section->flags &= ~SEC_READONLY;
|
||
|
||
switch (output->sectype)
|
||
{
|
||
case normal_section:
|
||
break;
|
||
case dsect_section:
|
||
case copy_section:
|
||
case info_section:
|
||
case overlay_section:
|
||
output->bfd_section->flags &= ~SEC_ALLOC;
|
||
break;
|
||
case noload_section:
|
||
output->bfd_section->flags &= ~SEC_LOAD;
|
||
output->bfd_section->flags |= SEC_NEVER_LOAD;
|
||
break;
|
||
}
|
||
|
||
/* Copy over SEC_SMALL_DATA. */
|
||
if (section->flags & SEC_SMALL_DATA)
|
||
section->output_section->flags |= SEC_SMALL_DATA;
|
||
|
||
if (section->alignment_power > output->bfd_section->alignment_power)
|
||
output->bfd_section->alignment_power = section->alignment_power;
|
||
|
||
/* If supplied an aligment, then force it. */
|
||
if (output->section_alignment != -1)
|
||
output->bfd_section->alignment_power = output->section_alignment;
|
||
|
||
if (section->flags & SEC_BLOCK)
|
||
{
|
||
section->output_section->flags |= SEC_BLOCK;
|
||
/* FIXME: This value should really be obtained from the bfd... */
|
||
output->block_value = 128;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Handle wildcard sorting. This returns the lang_input_section which
|
||
should follow the one we are going to create for SECTION and FILE,
|
||
based on the sorting requirements of WILD. It returns NULL if the
|
||
new section should just go at the end of the current list. */
|
||
|
||
static lang_statement_union_type *
|
||
wild_sort (wild, file, section)
|
||
lang_wild_statement_type *wild;
|
||
lang_input_statement_type *file;
|
||
asection *section;
|
||
{
|
||
const char *section_name;
|
||
lang_statement_union_type *l;
|
||
|
||
if (! wild->filenames_sorted && ! wild->sections_sorted)
|
||
return NULL;
|
||
|
||
section_name = bfd_get_section_name (file->the_bfd, section);
|
||
for (l = wild->children.head; l != NULL; l = l->next)
|
||
{
|
||
lang_input_section_type *ls;
|
||
|
||
if (l->header.type != lang_input_section_enum)
|
||
continue;
|
||
ls = &l->input_section;
|
||
|
||
/* Sorting by filename takes precedence over sorting by section
|
||
name. */
|
||
|
||
if (wild->filenames_sorted)
|
||
{
|
||
const char *fn, *ln;
|
||
boolean fa, la;
|
||
int i;
|
||
|
||
/* The PE support for the .idata section as generated by
|
||
dlltool assumes that files will be sorted by the name of
|
||
the archive and then the name of the file within the
|
||
archive. */
|
||
|
||
if (file->the_bfd != NULL
|
||
&& bfd_my_archive (file->the_bfd) != NULL)
|
||
{
|
||
fn = bfd_get_filename (bfd_my_archive (file->the_bfd));
|
||
fa = true;
|
||
}
|
||
else
|
||
{
|
||
fn = file->filename;
|
||
fa = false;
|
||
}
|
||
|
||
if (ls->ifile->the_bfd != NULL
|
||
&& bfd_my_archive (ls->ifile->the_bfd) != NULL)
|
||
{
|
||
ln = bfd_get_filename (bfd_my_archive (ls->ifile->the_bfd));
|
||
la = true;
|
||
}
|
||
else
|
||
{
|
||
ln = ls->ifile->filename;
|
||
la = false;
|
||
}
|
||
|
||
i = strcmp (fn, ln);
|
||
if (i > 0)
|
||
continue;
|
||
else if (i < 0)
|
||
break;
|
||
|
||
if (fa || la)
|
||
{
|
||
if (fa)
|
||
fn = file->filename;
|
||
if (la)
|
||
ln = ls->ifile->filename;
|
||
|
||
i = strcmp (fn, ln);
|
||
if (i > 0)
|
||
continue;
|
||
else if (i < 0)
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Here either the files are not sorted by name, or we are
|
||
looking at the sections for this file. */
|
||
|
||
if (wild->sections_sorted)
|
||
{
|
||
if (strcmp (section_name,
|
||
bfd_get_section_name (ls->ifile->the_bfd,
|
||
ls->section))
|
||
< 0)
|
||
break;
|
||
}
|
||
}
|
||
|
||
return l;
|
||
}
|
||
|
||
/* Expand a wild statement for a particular FILE. SECTION may be
|
||
NULL, in which case it is a wild card. */
|
||
|
||
static void
|
||
output_section_callback (ptr, section, file, output)
|
||
lang_wild_statement_type *ptr;
|
||
asection *section;
|
||
lang_input_statement_type *file;
|
||
PTR output;
|
||
{
|
||
lang_statement_union_type *before;
|
||
|
||
/* If the wild pattern was marked KEEP, the member sections
|
||
should be as well. */
|
||
if (ptr->keep_sections)
|
||
section->flags |= SEC_KEEP;
|
||
|
||
before = wild_sort (ptr, file, section);
|
||
|
||
/* Here BEFORE points to the lang_input_section which
|
||
should follow the one we are about to add. If BEFORE
|
||
is NULL, then the section should just go at the end
|
||
of the current list. */
|
||
|
||
if (before == NULL)
|
||
wild_doit (&ptr->children, section,
|
||
(lang_output_section_statement_type *) output,
|
||
file);
|
||
else
|
||
{
|
||
lang_statement_list_type list;
|
||
lang_statement_union_type **pp;
|
||
|
||
lang_list_init (&list);
|
||
wild_doit (&list, section,
|
||
(lang_output_section_statement_type *) output,
|
||
file);
|
||
|
||
/* If we are discarding the section, LIST.HEAD will
|
||
be NULL. */
|
||
if (list.head != NULL)
|
||
{
|
||
ASSERT (list.head->next == NULL);
|
||
|
||
for (pp = &ptr->children.head;
|
||
*pp != before;
|
||
pp = &(*pp)->next)
|
||
ASSERT (*pp != NULL);
|
||
|
||
list.head->next = *pp;
|
||
*pp = list.head;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This is passed a file name which must have been seen already and
|
||
added to the statement tree. We will see if it has been opened
|
||
already and had its symbols read. If not then we'll read it. */
|
||
|
||
static lang_input_statement_type *
|
||
lookup_name (name)
|
||
const char *name;
|
||
{
|
||
lang_input_statement_type *search;
|
||
|
||
for (search = (lang_input_statement_type *) input_file_chain.head;
|
||
search != (lang_input_statement_type *) NULL;
|
||
search = (lang_input_statement_type *) search->next_real_file)
|
||
{
|
||
if (search->filename == (char *) NULL && name == (char *) NULL)
|
||
return search;
|
||
if (search->filename != (char *) NULL
|
||
&& name != (char *) NULL
|
||
&& strcmp (search->filename, name) == 0)
|
||
break;
|
||
}
|
||
|
||
if (search == (lang_input_statement_type *) NULL)
|
||
search = new_afile (name, lang_input_file_is_file_enum, default_target,
|
||
false);
|
||
|
||
/* If we have already added this file, or this file is not real
|
||
(FIXME: can that ever actually happen?) or the name is NULL
|
||
(FIXME: can that ever actually happen?) don't add this file. */
|
||
if (search->loaded
|
||
|| ! search->real
|
||
|| search->filename == (const char *) NULL)
|
||
return search;
|
||
|
||
load_symbols (search, (lang_statement_list_type *) NULL);
|
||
|
||
return search;
|
||
}
|
||
|
||
/* Get the symbols for an input file. */
|
||
|
||
static void
|
||
load_symbols (entry, place)
|
||
lang_input_statement_type *entry;
|
||
lang_statement_list_type *place;
|
||
{
|
||
char **matching;
|
||
|
||
if (entry->loaded)
|
||
return;
|
||
|
||
ldfile_open_file (entry);
|
||
|
||
if (! bfd_check_format (entry->the_bfd, bfd_archive)
|
||
&& ! bfd_check_format_matches (entry->the_bfd, bfd_object, &matching))
|
||
{
|
||
bfd_error_type err;
|
||
lang_statement_list_type *hold;
|
||
|
||
err = bfd_get_error ();
|
||
|
||
/* See if the emulation has some special knowledge. */
|
||
if (ldemul_unrecognized_file (entry))
|
||
return;
|
||
|
||
if (err == bfd_error_file_ambiguously_recognized)
|
||
{
|
||
char **p;
|
||
|
||
einfo (_("%B: file not recognized: %E\n"), entry->the_bfd);
|
||
einfo (_("%B: matching formats:"), entry->the_bfd);
|
||
for (p = matching; *p != NULL; p++)
|
||
einfo (" %s", *p);
|
||
einfo ("%F\n");
|
||
}
|
||
else if (err != bfd_error_file_not_recognized
|
||
|| place == NULL)
|
||
einfo (_("%F%B: file not recognized: %E\n"), entry->the_bfd);
|
||
|
||
bfd_close (entry->the_bfd);
|
||
entry->the_bfd = NULL;
|
||
|
||
/* Try to interpret the file as a linker script. */
|
||
ldfile_open_command_file (entry->filename);
|
||
|
||
hold = stat_ptr;
|
||
stat_ptr = place;
|
||
|
||
ldfile_assumed_script = true;
|
||
parser_input = input_script;
|
||
yyparse ();
|
||
ldfile_assumed_script = false;
|
||
|
||
stat_ptr = hold;
|
||
|
||
return;
|
||
}
|
||
|
||
if (ldemul_recognized_file (entry))
|
||
return;
|
||
|
||
/* We don't call ldlang_add_file for an archive. Instead, the
|
||
add_symbols entry point will call ldlang_add_file, via the
|
||
add_archive_element callback, for each element of the archive
|
||
which is used. */
|
||
switch (bfd_get_format (entry->the_bfd))
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case bfd_object:
|
||
ldlang_add_file (entry);
|
||
if (trace_files || trace_file_tries)
|
||
info_msg ("%I\n", entry);
|
||
break;
|
||
|
||
case bfd_archive:
|
||
if (entry->whole_archive)
|
||
{
|
||
bfd *member = bfd_openr_next_archived_file (entry->the_bfd,
|
||
(bfd *) NULL);
|
||
while (member != NULL)
|
||
{
|
||
if (! bfd_check_format (member, bfd_object))
|
||
einfo (_("%F%B: object %B in archive is not object\n"),
|
||
entry->the_bfd, member);
|
||
if (! ((*link_info.callbacks->add_archive_element)
|
||
(&link_info, member, "--whole-archive")))
|
||
abort ();
|
||
if (! bfd_link_add_symbols (member, &link_info))
|
||
einfo (_("%F%B: could not read symbols: %E\n"), member);
|
||
member = bfd_openr_next_archived_file (entry->the_bfd,
|
||
member);
|
||
}
|
||
|
||
entry->loaded = true;
|
||
|
||
return;
|
||
}
|
||
}
|
||
|
||
if (! bfd_link_add_symbols (entry->the_bfd, &link_info))
|
||
einfo (_("%F%B: could not read symbols: %E\n"), entry->the_bfd);
|
||
|
||
entry->loaded = true;
|
||
}
|
||
|
||
/* Handle a wild statement. SECTION or FILE or both may be NULL,
|
||
indicating that it is a wildcard. Separate lang_input_section
|
||
statements are created for each part of the expansion; they are
|
||
added after the wild statement S. OUTPUT is the output section. */
|
||
|
||
static void
|
||
wild (s, section, file, target, output)
|
||
lang_wild_statement_type *s;
|
||
const char *section;
|
||
const char *file;
|
||
const char *target ATTRIBUTE_UNUSED;
|
||
lang_output_section_statement_type *output;
|
||
{
|
||
walk_wild (s, section, file, output_section_callback, (PTR) output);
|
||
|
||
if (section != (char *) NULL
|
||
&& strcmp (section, "COMMON") == 0
|
||
&& default_common_section == NULL)
|
||
{
|
||
/* Remember the section that common is going to in case we later
|
||
get something which doesn't know where to put it. */
|
||
default_common_section = output;
|
||
}
|
||
}
|
||
|
||
/* Return true iff target is the sought target. */
|
||
|
||
static int
|
||
get_target (target, data)
|
||
const bfd_target *target;
|
||
PTR data;
|
||
{
|
||
const char *sought = (const char *) data;
|
||
|
||
return strcmp (target->name, sought) == 0;
|
||
}
|
||
|
||
/* Like strcpy() but convert to lower case as well. */
|
||
|
||
static void
|
||
stricpy (dest, src)
|
||
char *dest;
|
||
char *src;
|
||
{
|
||
char c;
|
||
|
||
while ((c = *src++) != 0)
|
||
{
|
||
if (isupper ((unsigned char) c))
|
||
c = tolower (c);
|
||
|
||
*dest++ = c;
|
||
}
|
||
|
||
*dest = 0;
|
||
}
|
||
|
||
/* Remove the first occurance of needle (if any) in haystack
|
||
from haystack. */
|
||
|
||
static void
|
||
strcut (haystack, needle)
|
||
char *haystack;
|
||
char *needle;
|
||
{
|
||
haystack = strstr (haystack, needle);
|
||
|
||
if (haystack)
|
||
{
|
||
char *src;
|
||
|
||
for (src = haystack + strlen (needle); *src;)
|
||
*haystack++ = *src++;
|
||
|
||
*haystack = 0;
|
||
}
|
||
}
|
||
|
||
/* Compare two target format name strings.
|
||
Return a value indicating how "similar" they are. */
|
||
|
||
static int
|
||
name_compare (first, second)
|
||
char *first;
|
||
char *second;
|
||
{
|
||
char *copy1;
|
||
char *copy2;
|
||
int result;
|
||
|
||
copy1 = xmalloc (strlen (first) + 1);
|
||
copy2 = xmalloc (strlen (second) + 1);
|
||
|
||
/* Convert the names to lower case. */
|
||
stricpy (copy1, first);
|
||
stricpy (copy2, second);
|
||
|
||
/* Remove and endian strings from the name. */
|
||
strcut (copy1, "big");
|
||
strcut (copy1, "little");
|
||
strcut (copy2, "big");
|
||
strcut (copy2, "little");
|
||
|
||
/* Return a value based on how many characters match,
|
||
starting from the beginning. If both strings are
|
||
the same then return 10 * their length. */
|
||
for (result = 0; copy1[result] == copy2[result]; result++)
|
||
if (copy1[result] == 0)
|
||
{
|
||
result *= 10;
|
||
break;
|
||
}
|
||
|
||
free (copy1);
|
||
free (copy2);
|
||
|
||
return result;
|
||
}
|
||
|
||
/* Set by closest_target_match() below. */
|
||
static const bfd_target *winner;
|
||
|
||
/* Scan all the valid bfd targets looking for one that has the endianness
|
||
requirement that was specified on the command line, and is the nearest
|
||
match to the original output target. */
|
||
|
||
static int
|
||
closest_target_match (target, data)
|
||
const bfd_target *target;
|
||
PTR data;
|
||
{
|
||
const bfd_target *original = (const bfd_target *) data;
|
||
|
||
if (command_line.endian == ENDIAN_BIG
|
||
&& target->byteorder != BFD_ENDIAN_BIG)
|
||
return 0;
|
||
|
||
if (command_line.endian == ENDIAN_LITTLE
|
||
&& target->byteorder != BFD_ENDIAN_LITTLE)
|
||
return 0;
|
||
|
||
/* Must be the same flavour. */
|
||
if (target->flavour != original->flavour)
|
||
return 0;
|
||
|
||
/* If we have not found a potential winner yet, then record this one. */
|
||
if (winner == NULL)
|
||
{
|
||
winner = target;
|
||
return 0;
|
||
}
|
||
|
||
/* Oh dear, we now have two potential candidates for a successful match.
|
||
Compare their names and choose the better one. */
|
||
if (name_compare (target->name, original->name)
|
||
> name_compare (winner->name, original->name))
|
||
winner = target;
|
||
|
||
/* Keep on searching until wqe have checked them all. */
|
||
return 0;
|
||
}
|
||
|
||
/* Return the BFD target format of the first input file. */
|
||
|
||
static char *
|
||
get_first_input_target ()
|
||
{
|
||
char *target = NULL;
|
||
|
||
LANG_FOR_EACH_INPUT_STATEMENT (s)
|
||
{
|
||
if (s->header.type == lang_input_statement_enum
|
||
&& s->real)
|
||
{
|
||
ldfile_open_file (s);
|
||
|
||
if (s->the_bfd != NULL
|
||
&& bfd_check_format (s->the_bfd, bfd_object))
|
||
{
|
||
target = bfd_get_target (s->the_bfd);
|
||
|
||
if (target != NULL)
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
return target;
|
||
}
|
||
|
||
/* Open the output file. */
|
||
|
||
static bfd *
|
||
open_output (name)
|
||
const char *name;
|
||
{
|
||
bfd *output;
|
||
|
||
/* Has the user told us which output format to use? */
|
||
if (output_target == (char *) NULL)
|
||
{
|
||
/* No - has the current target been set to something other than
|
||
the default? */
|
||
if (current_target != default_target)
|
||
output_target = current_target;
|
||
|
||
/* No - can we determine the format of the first input file? */
|
||
else
|
||
{
|
||
output_target = get_first_input_target ();
|
||
|
||
/* Failed - use the default output target. */
|
||
if (output_target == NULL)
|
||
output_target = default_target;
|
||
}
|
||
}
|
||
|
||
/* Has the user requested a particular endianness on the command
|
||
line? */
|
||
if (command_line.endian != ENDIAN_UNSET)
|
||
{
|
||
const bfd_target *target;
|
||
enum bfd_endian desired_endian;
|
||
|
||
/* Get the chosen target. */
|
||
target = bfd_search_for_target (get_target, (PTR) output_target);
|
||
|
||
/* If the target is not supported, we cannot do anything. */
|
||
if (target != NULL)
|
||
{
|
||
if (command_line.endian == ENDIAN_BIG)
|
||
desired_endian = BFD_ENDIAN_BIG;
|
||
else
|
||
desired_endian = BFD_ENDIAN_LITTLE;
|
||
|
||
/* See if the target has the wrong endianness. This should
|
||
not happen if the linker script has provided big and
|
||
little endian alternatives, but some scrips don't do
|
||
this. */
|
||
if (target->byteorder != desired_endian)
|
||
{
|
||
/* If it does, then see if the target provides
|
||
an alternative with the correct endianness. */
|
||
if (target->alternative_target != NULL
|
||
&& (target->alternative_target->byteorder == desired_endian))
|
||
output_target = target->alternative_target->name;
|
||
else
|
||
{
|
||
/* Try to find a target as similar as possible to
|
||
the default target, but which has the desired
|
||
endian characteristic. */
|
||
(void) bfd_search_for_target (closest_target_match,
|
||
(PTR) target);
|
||
|
||
/* Oh dear - we could not find any targets that
|
||
satisfy our requirements. */
|
||
if (winner == NULL)
|
||
einfo (_("%P: warning: could not find any targets that match endianness requirement\n"));
|
||
else
|
||
output_target = winner->name;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
output = bfd_openw (name, output_target);
|
||
|
||
if (output == (bfd *) NULL)
|
||
{
|
||
if (bfd_get_error () == bfd_error_invalid_target)
|
||
einfo (_("%P%F: target %s not found\n"), output_target);
|
||
|
||
einfo (_("%P%F: cannot open output file %s: %E\n"), name);
|
||
}
|
||
|
||
delete_output_file_on_failure = true;
|
||
|
||
#if 0
|
||
output->flags |= D_PAGED;
|
||
#endif
|
||
|
||
if (! bfd_set_format (output, bfd_object))
|
||
einfo (_("%P%F:%s: can not make object file: %E\n"), name);
|
||
if (! bfd_set_arch_mach (output,
|
||
ldfile_output_architecture,
|
||
ldfile_output_machine))
|
||
einfo (_("%P%F:%s: can not set architecture: %E\n"), name);
|
||
|
||
link_info.hash = bfd_link_hash_table_create (output);
|
||
if (link_info.hash == (struct bfd_link_hash_table *) NULL)
|
||
einfo (_("%P%F: can not create link hash table: %E\n"));
|
||
|
||
bfd_set_gp_size (output, g_switch_value);
|
||
return output;
|
||
}
|
||
|
||
static void
|
||
ldlang_open_output (statement)
|
||
lang_statement_union_type *statement;
|
||
{
|
||
switch (statement->header.type)
|
||
{
|
||
case lang_output_statement_enum:
|
||
ASSERT (output_bfd == (bfd *) NULL);
|
||
output_bfd = open_output (statement->output_statement.name);
|
||
ldemul_set_output_arch ();
|
||
if (config.magic_demand_paged && !link_info.relocateable)
|
||
output_bfd->flags |= D_PAGED;
|
||
else
|
||
output_bfd->flags &= ~D_PAGED;
|
||
if (config.text_read_only)
|
||
output_bfd->flags |= WP_TEXT;
|
||
else
|
||
output_bfd->flags &= ~WP_TEXT;
|
||
if (link_info.traditional_format)
|
||
output_bfd->flags |= BFD_TRADITIONAL_FORMAT;
|
||
else
|
||
output_bfd->flags &= ~BFD_TRADITIONAL_FORMAT;
|
||
break;
|
||
|
||
case lang_target_statement_enum:
|
||
current_target = statement->target_statement.target;
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
|
||
/* Open all the input files. */
|
||
|
||
static void
|
||
open_input_bfds (s, force)
|
||
lang_statement_union_type *s;
|
||
boolean force;
|
||
{
|
||
for (; s != (lang_statement_union_type *) NULL; s = s->next)
|
||
{
|
||
switch (s->header.type)
|
||
{
|
||
case lang_constructors_statement_enum:
|
||
open_input_bfds (constructor_list.head, force);
|
||
break;
|
||
case lang_output_section_statement_enum:
|
||
open_input_bfds (s->output_section_statement.children.head, force);
|
||
break;
|
||
case lang_wild_statement_enum:
|
||
/* Maybe we should load the file's symbols. */
|
||
if (s->wild_statement.filename
|
||
&& ! wildcardp (s->wild_statement.filename))
|
||
(void) lookup_name (s->wild_statement.filename);
|
||
open_input_bfds (s->wild_statement.children.head, force);
|
||
break;
|
||
case lang_group_statement_enum:
|
||
{
|
||
struct bfd_link_hash_entry *undefs;
|
||
|
||
/* We must continually search the entries in the group
|
||
until no new symbols are added to the list of undefined
|
||
symbols. */
|
||
|
||
do
|
||
{
|
||
undefs = link_info.hash->undefs_tail;
|
||
open_input_bfds (s->group_statement.children.head, true);
|
||
}
|
||
while (undefs != link_info.hash->undefs_tail);
|
||
}
|
||
break;
|
||
case lang_target_statement_enum:
|
||
current_target = s->target_statement.target;
|
||
break;
|
||
case lang_input_statement_enum:
|
||
if (s->input_statement.real)
|
||
{
|
||
lang_statement_list_type add;
|
||
|
||
s->input_statement.target = current_target;
|
||
|
||
/* If we are being called from within a group, and this
|
||
is an archive which has already been searched, then
|
||
force it to be researched unless the whole archive
|
||
has been loaded already. */
|
||
if (force
|
||
&& !s->input_statement.whole_archive
|
||
&& s->input_statement.loaded
|
||
&& bfd_check_format (s->input_statement.the_bfd,
|
||
bfd_archive))
|
||
s->input_statement.loaded = false;
|
||
|
||
lang_list_init (&add);
|
||
|
||
load_symbols (&s->input_statement, &add);
|
||
|
||
if (add.head != NULL)
|
||
{
|
||
*add.tail = s->next;
|
||
s->next = add.head;
|
||
}
|
||
}
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* If there are [COMMONS] statements, put a wild one into the bss
|
||
section. */
|
||
|
||
static void
|
||
lang_reasonable_defaults ()
|
||
{
|
||
#if 0
|
||
lang_output_section_statement_lookup (".text");
|
||
lang_output_section_statement_lookup (".data");
|
||
|
||
default_common_section = lang_output_section_statement_lookup (".bss");
|
||
|
||
if (placed_commons == false)
|
||
{
|
||
lang_wild_statement_type *new =
|
||
new_stat (lang_wild_statement,
|
||
&default_common_section->children);
|
||
|
||
new->section_name = "COMMON";
|
||
new->filename = (char *) NULL;
|
||
lang_list_init (&new->children);
|
||
}
|
||
#endif
|
||
}
|
||
|
||
/* Add the supplied name to the symbol table as an undefined reference.
|
||
Remove items from the chain as we open input bfds. */
|
||
typedef struct ldlang_undef_chain_list
|
||
{
|
||
struct ldlang_undef_chain_list *next;
|
||
char *name;
|
||
} ldlang_undef_chain_list_type;
|
||
|
||
static ldlang_undef_chain_list_type *ldlang_undef_chain_list_head;
|
||
|
||
void
|
||
ldlang_add_undef (name)
|
||
const char *const name;
|
||
{
|
||
ldlang_undef_chain_list_type *new =
|
||
((ldlang_undef_chain_list_type *)
|
||
stat_alloc (sizeof (ldlang_undef_chain_list_type)));
|
||
|
||
new->next = ldlang_undef_chain_list_head;
|
||
ldlang_undef_chain_list_head = new;
|
||
|
||
new->name = xstrdup (name);
|
||
}
|
||
|
||
/* Run through the list of undefineds created above and place them
|
||
into the linker hash table as undefined symbols belonging to the
|
||
script file. */
|
||
|
||
static void
|
||
lang_place_undefineds ()
|
||
{
|
||
ldlang_undef_chain_list_type *ptr;
|
||
|
||
for (ptr = ldlang_undef_chain_list_head;
|
||
ptr != (ldlang_undef_chain_list_type *) NULL;
|
||
ptr = ptr->next)
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
h = bfd_link_hash_lookup (link_info.hash, ptr->name, true, false, true);
|
||
if (h == (struct bfd_link_hash_entry *) NULL)
|
||
einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
|
||
if (h->type == bfd_link_hash_new)
|
||
{
|
||
h->type = bfd_link_hash_undefined;
|
||
h->u.undef.abfd = NULL;
|
||
bfd_link_add_undef (link_info.hash, h);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Open input files and attatch to output sections. */
|
||
|
||
static void
|
||
map_input_to_output_sections (s, target, output_section_statement)
|
||
lang_statement_union_type *s;
|
||
const char *target;
|
||
lang_output_section_statement_type *output_section_statement;
|
||
{
|
||
for (; s != (lang_statement_union_type *) NULL; s = s->next)
|
||
{
|
||
switch (s->header.type)
|
||
{
|
||
|
||
case lang_wild_statement_enum:
|
||
wild (&s->wild_statement, s->wild_statement.section_name,
|
||
s->wild_statement.filename, target,
|
||
output_section_statement);
|
||
|
||
break;
|
||
case lang_constructors_statement_enum:
|
||
map_input_to_output_sections (constructor_list.head,
|
||
target,
|
||
output_section_statement);
|
||
break;
|
||
case lang_output_section_statement_enum:
|
||
map_input_to_output_sections (s->output_section_statement.children.head,
|
||
target,
|
||
&s->output_section_statement);
|
||
break;
|
||
case lang_output_statement_enum:
|
||
break;
|
||
case lang_target_statement_enum:
|
||
target = s->target_statement.target;
|
||
break;
|
||
case lang_group_statement_enum:
|
||
map_input_to_output_sections (s->group_statement.children.head,
|
||
target,
|
||
output_section_statement);
|
||
break;
|
||
case lang_fill_statement_enum:
|
||
case lang_input_section_enum:
|
||
case lang_object_symbols_statement_enum:
|
||
case lang_data_statement_enum:
|
||
case lang_reloc_statement_enum:
|
||
case lang_padding_statement_enum:
|
||
case lang_input_statement_enum:
|
||
if (output_section_statement != NULL
|
||
&& output_section_statement->bfd_section == NULL)
|
||
init_os (output_section_statement);
|
||
break;
|
||
case lang_assignment_statement_enum:
|
||
if (output_section_statement != NULL
|
||
&& output_section_statement->bfd_section == NULL)
|
||
init_os (output_section_statement);
|
||
|
||
/* Make sure that any sections mentioned in the assignment
|
||
are initialized. */
|
||
exp_init_os (s->assignment_statement.exp);
|
||
break;
|
||
case lang_afile_asection_pair_statement_enum:
|
||
FAIL ();
|
||
break;
|
||
case lang_address_statement_enum:
|
||
/* Mark the specified section with the supplied address. */
|
||
{
|
||
lang_output_section_statement_type *os =
|
||
lang_output_section_statement_lookup
|
||
(s->address_statement.section_name);
|
||
|
||
if (os->bfd_section == NULL)
|
||
init_os (os);
|
||
os->addr_tree = s->address_statement.address;
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_output_section_statement (output_section_statement)
|
||
lang_output_section_statement_type *output_section_statement;
|
||
{
|
||
asection *section = output_section_statement->bfd_section;
|
||
int len;
|
||
|
||
if (output_section_statement != abs_output_section)
|
||
{
|
||
minfo ("\n%s", output_section_statement->name);
|
||
|
||
if (section != NULL)
|
||
{
|
||
print_dot = section->vma;
|
||
|
||
len = strlen (output_section_statement->name);
|
||
if (len >= SECTION_NAME_MAP_LENGTH - 1)
|
||
{
|
||
print_nl ();
|
||
len = 0;
|
||
}
|
||
while (len < SECTION_NAME_MAP_LENGTH)
|
||
{
|
||
print_space ();
|
||
++len;
|
||
}
|
||
|
||
minfo ("0x%V %W", section->vma, section->_raw_size);
|
||
|
||
if (output_section_statement->load_base != NULL)
|
||
{
|
||
bfd_vma addr;
|
||
|
||
addr = exp_get_abs_int (output_section_statement->load_base, 0,
|
||
"load base", lang_final_phase_enum);
|
||
minfo (_(" load address 0x%V"), addr);
|
||
}
|
||
}
|
||
|
||
print_nl ();
|
||
}
|
||
|
||
print_statement_list (output_section_statement->children.head,
|
||
output_section_statement);
|
||
}
|
||
|
||
static void
|
||
print_assignment (assignment, output_section)
|
||
lang_assignment_statement_type *assignment;
|
||
lang_output_section_statement_type *output_section;
|
||
{
|
||
int i;
|
||
etree_value_type result;
|
||
|
||
for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
|
||
print_space ();
|
||
|
||
result = exp_fold_tree (assignment->exp->assign.src, output_section,
|
||
lang_final_phase_enum, print_dot, &print_dot);
|
||
if (result.valid_p)
|
||
minfo ("0x%V", result.value + result.section->bfd_section->vma);
|
||
else
|
||
{
|
||
minfo ("*undef* ");
|
||
#ifdef BFD64
|
||
minfo (" ");
|
||
#endif
|
||
}
|
||
|
||
minfo (" ");
|
||
|
||
exp_print_tree (assignment->exp);
|
||
|
||
print_nl ();
|
||
}
|
||
|
||
static void
|
||
print_input_statement (statm)
|
||
lang_input_statement_type *statm;
|
||
{
|
||
if (statm->filename != (char *) NULL)
|
||
{
|
||
fprintf (config.map_file, "LOAD %s\n", statm->filename);
|
||
}
|
||
}
|
||
|
||
/* Print all symbols defined in a particular section. This is called
|
||
via bfd_link_hash_traverse. */
|
||
|
||
static boolean
|
||
print_one_symbol (hash_entry, ptr)
|
||
struct bfd_link_hash_entry *hash_entry;
|
||
PTR ptr;
|
||
{
|
||
asection *sec = (asection *) ptr;
|
||
|
||
if ((hash_entry->type == bfd_link_hash_defined
|
||
|| hash_entry->type == bfd_link_hash_defweak)
|
||
&& sec == hash_entry->u.def.section)
|
||
{
|
||
int i;
|
||
|
||
for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
|
||
print_space ();
|
||
minfo ("0x%V ",
|
||
(hash_entry->u.def.value
|
||
+ hash_entry->u.def.section->output_offset
|
||
+ hash_entry->u.def.section->output_section->vma));
|
||
|
||
minfo (" %T\n", hash_entry->root.string);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Print information about an input section to the map file. */
|
||
|
||
static void
|
||
print_input_section (in)
|
||
lang_input_section_type *in;
|
||
{
|
||
asection *i = in->section;
|
||
bfd_size_type size = i->_cooked_size != 0 ? i->_cooked_size : i->_raw_size;
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
if (size != 0)
|
||
{
|
||
print_space ();
|
||
|
||
minfo ("%s", i->name);
|
||
|
||
if (i->output_section != NULL)
|
||
{
|
||
int len;
|
||
|
||
len = 1 + strlen (i->name);
|
||
if (len >= SECTION_NAME_MAP_LENGTH - 1)
|
||
{
|
||
print_nl ();
|
||
len = 0;
|
||
}
|
||
while (len < SECTION_NAME_MAP_LENGTH)
|
||
{
|
||
print_space ();
|
||
++len;
|
||
}
|
||
|
||
minfo ("0x%V %W %B\n",
|
||
i->output_section->vma + i->output_offset, size / opb,
|
||
i->owner);
|
||
|
||
if (i->_cooked_size != 0 && i->_cooked_size != i->_raw_size)
|
||
{
|
||
len = SECTION_NAME_MAP_LENGTH + 3;
|
||
#ifdef BFD64
|
||
len += 16;
|
||
#else
|
||
len += 8;
|
||
#endif
|
||
while (len > 0)
|
||
{
|
||
print_space ();
|
||
--len;
|
||
}
|
||
|
||
minfo (_("%W (size before relaxing)\n"), i->_raw_size);
|
||
}
|
||
|
||
bfd_link_hash_traverse (link_info.hash, print_one_symbol, (PTR) i);
|
||
|
||
print_dot = i->output_section->vma + i->output_offset + size / opb;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_fill_statement (fill)
|
||
lang_fill_statement_type *fill;
|
||
{
|
||
fprintf (config.map_file, " FILL mask 0x%x\n", fill->fill);
|
||
}
|
||
|
||
static void
|
||
print_data_statement (data)
|
||
lang_data_statement_type *data;
|
||
{
|
||
int i;
|
||
bfd_vma addr;
|
||
bfd_size_type size;
|
||
const char *name;
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
|
||
for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
|
||
print_space ();
|
||
|
||
addr = data->output_vma;
|
||
if (data->output_section != NULL)
|
||
addr += data->output_section->vma;
|
||
|
||
switch (data->type)
|
||
{
|
||
default:
|
||
abort ();
|
||
case BYTE:
|
||
size = BYTE_SIZE;
|
||
name = "BYTE";
|
||
break;
|
||
case SHORT:
|
||
size = SHORT_SIZE;
|
||
name = "SHORT";
|
||
break;
|
||
case LONG:
|
||
size = LONG_SIZE;
|
||
name = "LONG";
|
||
break;
|
||
case QUAD:
|
||
size = QUAD_SIZE;
|
||
name = "QUAD";
|
||
break;
|
||
case SQUAD:
|
||
size = QUAD_SIZE;
|
||
name = "SQUAD";
|
||
break;
|
||
}
|
||
|
||
minfo ("0x%V %W %s 0x%v", addr, size, name, data->value);
|
||
|
||
if (data->exp->type.node_class != etree_value)
|
||
{
|
||
print_space ();
|
||
exp_print_tree (data->exp);
|
||
}
|
||
|
||
print_nl ();
|
||
|
||
print_dot = addr + size / opb;
|
||
|
||
}
|
||
|
||
/* Print an address statement. These are generated by options like
|
||
-Ttext. */
|
||
|
||
static void
|
||
print_address_statement (address)
|
||
lang_address_statement_type *address;
|
||
{
|
||
minfo (_("Address of section %s set to "), address->section_name);
|
||
exp_print_tree (address->address);
|
||
print_nl ();
|
||
}
|
||
|
||
/* Print a reloc statement. */
|
||
|
||
static void
|
||
print_reloc_statement (reloc)
|
||
lang_reloc_statement_type *reloc;
|
||
{
|
||
int i;
|
||
bfd_vma addr;
|
||
bfd_size_type size;
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
|
||
for (i = 0; i < SECTION_NAME_MAP_LENGTH; i++)
|
||
print_space ();
|
||
|
||
addr = reloc->output_vma;
|
||
if (reloc->output_section != NULL)
|
||
addr += reloc->output_section->vma;
|
||
|
||
size = bfd_get_reloc_size (reloc->howto);
|
||
|
||
minfo ("0x%V %W RELOC %s ", addr, size, reloc->howto->name);
|
||
|
||
if (reloc->name != NULL)
|
||
minfo ("%s+", reloc->name);
|
||
else
|
||
minfo ("%s+", reloc->section->name);
|
||
|
||
exp_print_tree (reloc->addend_exp);
|
||
|
||
print_nl ();
|
||
|
||
print_dot = addr + size / opb;
|
||
}
|
||
|
||
static void
|
||
print_padding_statement (s)
|
||
lang_padding_statement_type *s;
|
||
{
|
||
int len;
|
||
bfd_vma addr;
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
|
||
minfo (" *fill*");
|
||
|
||
len = sizeof " *fill*" - 1;
|
||
while (len < SECTION_NAME_MAP_LENGTH)
|
||
{
|
||
print_space ();
|
||
++len;
|
||
}
|
||
|
||
addr = s->output_offset;
|
||
if (s->output_section != NULL)
|
||
addr += s->output_section->vma;
|
||
minfo ("0x%V %W", addr, s->size);
|
||
|
||
if (s->fill != 0)
|
||
minfo (" %u", s->fill);
|
||
|
||
print_nl ();
|
||
|
||
print_dot = addr + s->size / opb;
|
||
}
|
||
|
||
static void
|
||
print_wild_statement (w, os)
|
||
lang_wild_statement_type *w;
|
||
lang_output_section_statement_type *os;
|
||
{
|
||
print_space ();
|
||
|
||
if (w->filenames_sorted)
|
||
minfo ("SORT(");
|
||
if (w->exclude_filename_list != NULL)
|
||
{
|
||
name_list *tmp;
|
||
minfo ("EXCLUDE_FILE ( %s", w->exclude_filename_list->name);
|
||
for (tmp = w->exclude_filename_list->next; tmp; tmp = tmp->next)
|
||
minfo (", %s", tmp->name);
|
||
minfo (")");
|
||
}
|
||
if (w->filename != NULL)
|
||
minfo ("%s", w->filename);
|
||
else
|
||
minfo ("*");
|
||
if (w->filenames_sorted)
|
||
minfo (")");
|
||
|
||
minfo ("(");
|
||
if (w->sections_sorted)
|
||
minfo ("SORT(");
|
||
if (w->section_name != NULL)
|
||
minfo ("%s", w->section_name);
|
||
else
|
||
minfo ("*");
|
||
if (w->sections_sorted)
|
||
minfo (")");
|
||
minfo (")");
|
||
|
||
print_nl ();
|
||
|
||
print_statement_list (w->children.head, os);
|
||
}
|
||
|
||
/* Print a group statement. */
|
||
|
||
static void
|
||
print_group (s, os)
|
||
lang_group_statement_type *s;
|
||
lang_output_section_statement_type *os;
|
||
{
|
||
fprintf (config.map_file, "START GROUP\n");
|
||
print_statement_list (s->children.head, os);
|
||
fprintf (config.map_file, "END GROUP\n");
|
||
}
|
||
|
||
/* Print the list of statements in S.
|
||
This can be called for any statement type. */
|
||
|
||
static void
|
||
print_statement_list (s, os)
|
||
lang_statement_union_type *s;
|
||
lang_output_section_statement_type *os;
|
||
{
|
||
while (s != NULL)
|
||
{
|
||
print_statement (s, os);
|
||
s = s->next;
|
||
}
|
||
}
|
||
|
||
/* Print the first statement in statement list S.
|
||
This can be called for any statement type. */
|
||
|
||
static void
|
||
print_statement (s, os)
|
||
lang_statement_union_type *s;
|
||
lang_output_section_statement_type *os;
|
||
{
|
||
switch (s->header.type)
|
||
{
|
||
default:
|
||
fprintf (config.map_file, _("Fail with %d\n"), s->header.type);
|
||
FAIL ();
|
||
break;
|
||
case lang_constructors_statement_enum:
|
||
if (constructor_list.head != NULL)
|
||
{
|
||
if (constructors_sorted)
|
||
minfo (" SORT (CONSTRUCTORS)\n");
|
||
else
|
||
minfo (" CONSTRUCTORS\n");
|
||
print_statement_list (constructor_list.head, os);
|
||
}
|
||
break;
|
||
case lang_wild_statement_enum:
|
||
print_wild_statement (&s->wild_statement, os);
|
||
break;
|
||
case lang_address_statement_enum:
|
||
print_address_statement (&s->address_statement);
|
||
break;
|
||
case lang_object_symbols_statement_enum:
|
||
minfo (" CREATE_OBJECT_SYMBOLS\n");
|
||
break;
|
||
case lang_fill_statement_enum:
|
||
print_fill_statement (&s->fill_statement);
|
||
break;
|
||
case lang_data_statement_enum:
|
||
print_data_statement (&s->data_statement);
|
||
break;
|
||
case lang_reloc_statement_enum:
|
||
print_reloc_statement (&s->reloc_statement);
|
||
break;
|
||
case lang_input_section_enum:
|
||
print_input_section (&s->input_section);
|
||
break;
|
||
case lang_padding_statement_enum:
|
||
print_padding_statement (&s->padding_statement);
|
||
break;
|
||
case lang_output_section_statement_enum:
|
||
print_output_section_statement (&s->output_section_statement);
|
||
break;
|
||
case lang_assignment_statement_enum:
|
||
print_assignment (&s->assignment_statement, os);
|
||
break;
|
||
case lang_target_statement_enum:
|
||
fprintf (config.map_file, "TARGET(%s)\n", s->target_statement.target);
|
||
break;
|
||
case lang_output_statement_enum:
|
||
minfo ("OUTPUT(%s", s->output_statement.name);
|
||
if (output_target != NULL)
|
||
minfo (" %s", output_target);
|
||
minfo (")\n");
|
||
break;
|
||
case lang_input_statement_enum:
|
||
print_input_statement (&s->input_statement);
|
||
break;
|
||
case lang_group_statement_enum:
|
||
print_group (&s->group_statement, os);
|
||
break;
|
||
case lang_afile_asection_pair_statement_enum:
|
||
FAIL ();
|
||
break;
|
||
}
|
||
}
|
||
|
||
static void
|
||
print_statements ()
|
||
{
|
||
print_statement_list (statement_list.head, abs_output_section);
|
||
}
|
||
|
||
/* Print the first N statements in statement list S to STDERR.
|
||
If N == 0, nothing is printed.
|
||
If N < 0, the entire list is printed.
|
||
Intended to be called from GDB. */
|
||
|
||
void
|
||
dprint_statement (s, n)
|
||
lang_statement_union_type *s;
|
||
int n;
|
||
{
|
||
FILE *map_save = config.map_file;
|
||
|
||
config.map_file = stderr;
|
||
|
||
if (n < 0)
|
||
print_statement_list (s, abs_output_section);
|
||
else
|
||
{
|
||
while (s && --n >= 0)
|
||
{
|
||
print_statement (s, abs_output_section);
|
||
s = s->next;
|
||
}
|
||
}
|
||
|
||
config.map_file = map_save;
|
||
}
|
||
|
||
static bfd_vma
|
||
insert_pad (this_ptr, fill, power, output_section_statement, dot)
|
||
lang_statement_union_type **this_ptr;
|
||
fill_type fill;
|
||
unsigned int power;
|
||
asection *output_section_statement;
|
||
bfd_vma dot;
|
||
{
|
||
/* Align this section first to the
|
||
input sections requirement, then
|
||
to the output section's requirement.
|
||
If this alignment is > than any seen before,
|
||
then record it too. Perform the alignment by
|
||
inserting a magic 'padding' statement. */
|
||
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
unsigned int alignment_needed = align_power (dot, power) - dot;
|
||
|
||
if (alignment_needed != 0)
|
||
{
|
||
lang_statement_union_type *new =
|
||
((lang_statement_union_type *)
|
||
stat_alloc (sizeof (lang_padding_statement_type)));
|
||
|
||
/* Link into existing chain. */
|
||
new->header.next = *this_ptr;
|
||
*this_ptr = new;
|
||
new->header.type = lang_padding_statement_enum;
|
||
new->padding_statement.output_section = output_section_statement;
|
||
new->padding_statement.output_offset =
|
||
dot - output_section_statement->vma;
|
||
new->padding_statement.fill = fill;
|
||
new->padding_statement.size = alignment_needed * opb;
|
||
}
|
||
|
||
/* Remember the most restrictive alignment. */
|
||
if (power > output_section_statement->alignment_power)
|
||
{
|
||
output_section_statement->alignment_power = power;
|
||
}
|
||
output_section_statement->_raw_size += alignment_needed * opb;
|
||
|
||
return dot + alignment_needed;
|
||
}
|
||
|
||
/* Work out how much this section will move the dot point. */
|
||
|
||
static bfd_vma
|
||
size_input_section (this_ptr, output_section_statement, fill, dot, relax)
|
||
lang_statement_union_type **this_ptr;
|
||
lang_output_section_statement_type *output_section_statement;
|
||
fill_type fill;
|
||
bfd_vma dot;
|
||
boolean relax ATTRIBUTE_UNUSED;
|
||
{
|
||
lang_input_section_type *is = &((*this_ptr)->input_section);
|
||
asection *i = is->section;
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
|
||
if (is->ifile->just_syms_flag == false)
|
||
{
|
||
if (output_section_statement->subsection_alignment != -1)
|
||
i->alignment_power =
|
||
output_section_statement->subsection_alignment;
|
||
|
||
dot = insert_pad (this_ptr, fill, i->alignment_power,
|
||
output_section_statement->bfd_section, dot);
|
||
|
||
/* Remember where in the output section this input section goes. */
|
||
|
||
i->output_offset = dot - output_section_statement->bfd_section->vma;
|
||
|
||
/* Mark how big the output section must be to contain this now. */
|
||
if (i->_cooked_size != 0)
|
||
dot += i->_cooked_size / opb;
|
||
else
|
||
dot += i->_raw_size / opb;
|
||
output_section_statement->bfd_section->_raw_size =
|
||
(dot - output_section_statement->bfd_section->vma) * opb;
|
||
}
|
||
else
|
||
{
|
||
i->output_offset = i->vma - output_section_statement->bfd_section->vma;
|
||
}
|
||
|
||
return dot;
|
||
}
|
||
|
||
#define IGNORE_SECTION(bfd, s) \
|
||
(((bfd_get_section_flags (bfd, s) & (SEC_ALLOC | SEC_LOAD)) \
|
||
!= (SEC_ALLOC | SEC_LOAD)) \
|
||
|| bfd_section_size (bfd, s) == 0)
|
||
|
||
/* Check to see if any allocated sections overlap with other allocated
|
||
sections. This can happen when the linker script specifically specifies
|
||
the output section addresses of the two sections. */
|
||
|
||
static void
|
||
lang_check_section_addresses ()
|
||
{
|
||
asection *s;
|
||
unsigned opb = bfd_octets_per_byte (output_bfd);
|
||
|
||
/* Scan all sections in the output list. */
|
||
for (s = output_bfd->sections; s != NULL; s = s->next)
|
||
{
|
||
asection *os;
|
||
|
||
/* Ignore sections which are not loaded or which have no contents. */
|
||
if (IGNORE_SECTION (output_bfd, s))
|
||
continue;
|
||
|
||
/* Once we reach section 's' stop our seach. This prevents two
|
||
warning messages from being produced, one for 'section A overlaps
|
||
section B' and one for 'section B overlaps section A'. */
|
||
for (os = output_bfd->sections; os != s; os = os->next)
|
||
{
|
||
bfd_vma s_start;
|
||
bfd_vma s_end;
|
||
bfd_vma os_start;
|
||
bfd_vma os_end;
|
||
|
||
/* Only consider loadable sections with real contents. */
|
||
if (IGNORE_SECTION (output_bfd, os))
|
||
continue;
|
||
|
||
/* We must check the sections' LMA addresses not their
|
||
VMA addresses because overlay sections can have
|
||
overlapping VMAs but they must have distinct LMAs. */
|
||
s_start = bfd_section_lma (output_bfd, s);
|
||
os_start = bfd_section_lma (output_bfd, os);
|
||
s_end = s_start + bfd_section_size (output_bfd, s) / opb - 1;
|
||
os_end = os_start + bfd_section_size (output_bfd, os) / opb - 1;
|
||
|
||
/* Look for an overlap. */
|
||
if ((s_end < os_start) || (s_start > os_end))
|
||
continue;
|
||
|
||
einfo (
|
||
_("%X%P: section %s [%V -> %V] overlaps section %s [%V -> %V]\n"),
|
||
s->name, s_start, s_end, os->name, os_start, os_end);
|
||
|
||
/* Once we have found one overlap for this section,
|
||
stop looking for others. */
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This variable indicates whether bfd_relax_section should be called
|
||
again. */
|
||
|
||
static boolean relax_again;
|
||
|
||
/* Make sure the new address is within the region. We explicitly permit the
|
||
current address to be at the exact end of the region when the address is
|
||
non-zero, in case the region is at the end of addressable memory and the
|
||
calculation wraps around. */
|
||
|
||
static void
|
||
os_region_check (os, region, tree, base)
|
||
lang_output_section_statement_type *os;
|
||
struct memory_region_struct *region;
|
||
etree_type *tree;
|
||
bfd_vma base;
|
||
{
|
||
if ((region->current < region->origin
|
||
|| (region->current - region->origin > region->length))
|
||
&& ((region->current != region->origin + region->length)
|
||
|| base == 0))
|
||
{
|
||
if (tree != (etree_type *) NULL)
|
||
{
|
||
einfo (_("%X%P: address 0x%v of %B section %s is not within region %s\n"),
|
||
region->current,
|
||
os->bfd_section->owner,
|
||
os->bfd_section->name,
|
||
region->name);
|
||
}
|
||
else
|
||
{
|
||
einfo (_("%X%P: region %s is full (%B section %s)\n"),
|
||
region->name,
|
||
os->bfd_section->owner,
|
||
os->bfd_section->name);
|
||
}
|
||
/* Reset the region pointer. */
|
||
region->current = region->origin;
|
||
}
|
||
}
|
||
|
||
/* Set the sizes for all the output sections. */
|
||
|
||
bfd_vma
|
||
lang_size_sections (s, output_section_statement, prev, fill, dot, relax)
|
||
lang_statement_union_type *s;
|
||
lang_output_section_statement_type *output_section_statement;
|
||
lang_statement_union_type **prev;
|
||
fill_type fill;
|
||
bfd_vma dot;
|
||
boolean relax;
|
||
{
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
|
||
/* Size up the sections from their constituent parts. */
|
||
for (; s != (lang_statement_union_type *) NULL; s = s->next)
|
||
{
|
||
switch (s->header.type)
|
||
{
|
||
case lang_output_section_statement_enum:
|
||
{
|
||
bfd_vma after;
|
||
lang_output_section_statement_type *os;
|
||
|
||
os = &s->output_section_statement;
|
||
if (os->bfd_section == NULL)
|
||
/* This section was never actually created. */
|
||
break;
|
||
|
||
/* If this is a COFF shared library section, use the size and
|
||
address from the input section. FIXME: This is COFF
|
||
specific; it would be cleaner if there were some other way
|
||
to do this, but nothing simple comes to mind. */
|
||
if ((os->bfd_section->flags & SEC_COFF_SHARED_LIBRARY) != 0)
|
||
{
|
||
asection *input;
|
||
|
||
if (os->children.head == NULL
|
||
|| os->children.head->next != NULL
|
||
|| os->children.head->header.type != lang_input_section_enum)
|
||
einfo (_("%P%X: Internal error on COFF shared library section %s\n"),
|
||
os->name);
|
||
|
||
input = os->children.head->input_section.section;
|
||
bfd_set_section_vma (os->bfd_section->owner,
|
||
os->bfd_section,
|
||
bfd_section_vma (input->owner, input));
|
||
os->bfd_section->_raw_size = input->_raw_size;
|
||
break;
|
||
}
|
||
|
||
if (bfd_is_abs_section (os->bfd_section))
|
||
{
|
||
/* No matter what happens, an abs section starts at zero. */
|
||
ASSERT (os->bfd_section->vma == 0);
|
||
}
|
||
else
|
||
{
|
||
if (os->addr_tree == (etree_type *) NULL)
|
||
{
|
||
/* No address specified for this section, get one
|
||
from the region specification. */
|
||
if (os->region == (lang_memory_region_type *) NULL
|
||
|| (((bfd_get_section_flags (output_bfd, os->bfd_section)
|
||
& (SEC_ALLOC | SEC_LOAD)) != 0)
|
||
&& os->region->name[0] == '*'
|
||
&& strcmp (os->region->name, "*default*") == 0))
|
||
{
|
||
os->region = lang_memory_default (os->bfd_section);
|
||
}
|
||
|
||
/* If a loadable section is using the default memory
|
||
region, and some non default memory regions were
|
||
defined, issue a warning. */
|
||
if ((bfd_get_section_flags (output_bfd, os->bfd_section)
|
||
& (SEC_ALLOC | SEC_LOAD)) != 0
|
||
&& ! link_info.relocateable
|
||
&& strcmp (os->region->name, "*default*") == 0
|
||
&& lang_memory_region_list != NULL
|
||
&& (strcmp (lang_memory_region_list->name,
|
||
"*default*") != 0
|
||
|| lang_memory_region_list->next != NULL))
|
||
einfo (_("%P: warning: no memory region specified for section `%s'\n"),
|
||
bfd_get_section_name (output_bfd,
|
||
os->bfd_section));
|
||
|
||
dot = os->region->current;
|
||
|
||
if (os->section_alignment == -1)
|
||
{
|
||
bfd_vma olddot;
|
||
|
||
olddot = dot;
|
||
dot = align_power (dot,
|
||
os->bfd_section->alignment_power);
|
||
|
||
if (dot != olddot && config.warn_section_align)
|
||
einfo (_("%P: warning: changing start of section %s by %u bytes\n"),
|
||
os->name, (unsigned int) (dot - olddot));
|
||
}
|
||
}
|
||
else
|
||
{
|
||
etree_value_type r;
|
||
|
||
r = exp_fold_tree (os->addr_tree,
|
||
abs_output_section,
|
||
lang_allocating_phase_enum,
|
||
dot, &dot);
|
||
if (r.valid_p == false)
|
||
{
|
||
einfo (_("%F%S: non constant address expression for section %s\n"),
|
||
os->name);
|
||
}
|
||
dot = r.value + r.section->bfd_section->vma;
|
||
}
|
||
|
||
/* The section starts here.
|
||
First, align to what the section needs. */
|
||
|
||
if (os->section_alignment != -1)
|
||
dot = align_power (dot, os->section_alignment);
|
||
|
||
bfd_set_section_vma (0, os->bfd_section, dot);
|
||
|
||
os->bfd_section->output_offset = 0;
|
||
}
|
||
|
||
(void) lang_size_sections (os->children.head, os,
|
||
&os->children.head,
|
||
os->fill, dot, relax);
|
||
|
||
/* Put the section within the requested block size, or
|
||
align at the block boundary. */
|
||
after = ALIGN_N (os->bfd_section->vma
|
||
+ os->bfd_section->_raw_size / opb,
|
||
/* The coercion here is important, see ld.h. */
|
||
(bfd_vma) os->block_value);
|
||
|
||
if (bfd_is_abs_section (os->bfd_section))
|
||
ASSERT (after == os->bfd_section->vma);
|
||
else
|
||
os->bfd_section->_raw_size =
|
||
(after - os->bfd_section->vma) * opb;
|
||
dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
|
||
os->processed = true;
|
||
|
||
/* Update dot in the region ?
|
||
We only do this if the section is going to be allocated,
|
||
since unallocated sections do not contribute to the region's
|
||
overall size in memory.
|
||
|
||
If the SEC_NEVER_LOAD bit is not set, it will affect the
|
||
addresses of sections after it. We have to update
|
||
dot. */
|
||
if (os->region != (lang_memory_region_type *) NULL
|
||
&& ((bfd_get_section_flags (output_bfd, os->bfd_section)
|
||
& SEC_NEVER_LOAD) == 0
|
||
|| (bfd_get_section_flags (output_bfd, os->bfd_section)
|
||
& (SEC_ALLOC | SEC_LOAD))))
|
||
{
|
||
os->region->current = dot;
|
||
|
||
/* Make sure the new address is within the region. */
|
||
os_region_check (os, os->region, os->addr_tree,
|
||
os->bfd_section->vma);
|
||
|
||
/* If there's no load address specified, use the run
|
||
region as the load region. */
|
||
if (os->lma_region == NULL && os->load_base == NULL)
|
||
os->lma_region = os->region;
|
||
|
||
if (os->lma_region != NULL)
|
||
{
|
||
if (os->load_base != NULL)
|
||
{
|
||
einfo (_("%X%P: use an absolute load address or a load memory region, not both\n"));
|
||
}
|
||
else
|
||
{
|
||
/* Don't allocate twice. */
|
||
if (os->lma_region != os->region)
|
||
{
|
||
/* Set load_base, which will be handled later. */
|
||
os->load_base =
|
||
exp_intop (os->lma_region->current);
|
||
os->lma_region->current +=
|
||
os->bfd_section->_raw_size / opb;
|
||
os_region_check (os, os->lma_region, NULL,
|
||
os->bfd_section->lma);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
|
||
case lang_constructors_statement_enum:
|
||
dot = lang_size_sections (constructor_list.head,
|
||
output_section_statement,
|
||
&s->wild_statement.children.head,
|
||
fill,
|
||
dot, relax);
|
||
break;
|
||
|
||
case lang_data_statement_enum:
|
||
{
|
||
unsigned int size = 0;
|
||
|
||
s->data_statement.output_vma =
|
||
dot - output_section_statement->bfd_section->vma;
|
||
s->data_statement.output_section =
|
||
output_section_statement->bfd_section;
|
||
|
||
switch (s->data_statement.type)
|
||
{
|
||
default:
|
||
abort ();
|
||
case QUAD:
|
||
case SQUAD:
|
||
size = QUAD_SIZE;
|
||
break;
|
||
case LONG:
|
||
size = LONG_SIZE;
|
||
break;
|
||
case SHORT:
|
||
size = SHORT_SIZE;
|
||
break;
|
||
case BYTE:
|
||
size = BYTE_SIZE;
|
||
break;
|
||
}
|
||
if (size < opb)
|
||
size = opb;
|
||
dot += size / opb;
|
||
output_section_statement->bfd_section->_raw_size += size;
|
||
/* The output section gets contents, and then we inspect for
|
||
any flags set in the input script which override any ALLOC. */
|
||
output_section_statement->bfd_section->flags |= SEC_HAS_CONTENTS;
|
||
if (!(output_section_statement->flags & SEC_NEVER_LOAD))
|
||
{
|
||
output_section_statement->bfd_section->flags |=
|
||
SEC_ALLOC | SEC_LOAD;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case lang_reloc_statement_enum:
|
||
{
|
||
int size;
|
||
|
||
s->reloc_statement.output_vma =
|
||
dot - output_section_statement->bfd_section->vma;
|
||
s->reloc_statement.output_section =
|
||
output_section_statement->bfd_section;
|
||
size = bfd_get_reloc_size (s->reloc_statement.howto);
|
||
dot += size / opb;
|
||
output_section_statement->bfd_section->_raw_size += size;
|
||
}
|
||
break;
|
||
|
||
case lang_wild_statement_enum:
|
||
|
||
dot = lang_size_sections (s->wild_statement.children.head,
|
||
output_section_statement,
|
||
&s->wild_statement.children.head,
|
||
fill, dot, relax);
|
||
|
||
break;
|
||
|
||
case lang_object_symbols_statement_enum:
|
||
link_info.create_object_symbols_section =
|
||
output_section_statement->bfd_section;
|
||
break;
|
||
case lang_output_statement_enum:
|
||
case lang_target_statement_enum:
|
||
break;
|
||
case lang_input_section_enum:
|
||
{
|
||
asection *i;
|
||
|
||
i = (*prev)->input_section.section;
|
||
if (! relax)
|
||
{
|
||
if (i->_cooked_size == 0)
|
||
i->_cooked_size = i->_raw_size;
|
||
}
|
||
else
|
||
{
|
||
boolean again;
|
||
|
||
if (! bfd_relax_section (i->owner, i, &link_info, &again))
|
||
einfo (_("%P%F: can't relax section: %E\n"));
|
||
if (again)
|
||
relax_again = true;
|
||
}
|
||
dot = size_input_section (prev,
|
||
output_section_statement,
|
||
output_section_statement->fill,
|
||
dot, relax);
|
||
}
|
||
break;
|
||
case lang_input_statement_enum:
|
||
break;
|
||
case lang_fill_statement_enum:
|
||
s->fill_statement.output_section =
|
||
output_section_statement->bfd_section;
|
||
|
||
fill = s->fill_statement.fill;
|
||
break;
|
||
case lang_assignment_statement_enum:
|
||
{
|
||
bfd_vma newdot = dot;
|
||
|
||
exp_fold_tree (s->assignment_statement.exp,
|
||
output_section_statement,
|
||
lang_allocating_phase_enum,
|
||
dot,
|
||
&newdot);
|
||
|
||
if (newdot != dot)
|
||
{
|
||
/* The assignment changed dot. Insert a pad. */
|
||
if (output_section_statement == abs_output_section)
|
||
{
|
||
/* If we don't have an output section, then just adjust
|
||
the default memory address. */
|
||
lang_memory_region_lookup ("*default*")->current = newdot;
|
||
}
|
||
else if (!relax)
|
||
{
|
||
lang_statement_union_type *new =
|
||
((lang_statement_union_type *)
|
||
stat_alloc (sizeof (lang_padding_statement_type)));
|
||
|
||
/* Link into existing chain. */
|
||
new->header.next = *prev;
|
||
*prev = new;
|
||
new->header.type = lang_padding_statement_enum;
|
||
new->padding_statement.output_section =
|
||
output_section_statement->bfd_section;
|
||
new->padding_statement.output_offset =
|
||
dot - output_section_statement->bfd_section->vma;
|
||
new->padding_statement.fill = fill;
|
||
new->padding_statement.size = (newdot - dot) * opb;
|
||
output_section_statement->bfd_section->_raw_size +=
|
||
new->padding_statement.size;
|
||
}
|
||
|
||
dot = newdot;
|
||
}
|
||
}
|
||
break;
|
||
|
||
case lang_padding_statement_enum:
|
||
/* If we are relaxing, and this is not the first pass, some
|
||
padding statements may have been inserted during previous
|
||
passes. We may have to move the padding statement to a new
|
||
location if dot has a different value at this point in this
|
||
pass than it did at this point in the previous pass. */
|
||
s->padding_statement.output_offset =
|
||
dot - output_section_statement->bfd_section->vma;
|
||
dot += s->padding_statement.size / opb;
|
||
output_section_statement->bfd_section->_raw_size +=
|
||
s->padding_statement.size;
|
||
break;
|
||
|
||
case lang_group_statement_enum:
|
||
dot = lang_size_sections (s->group_statement.children.head,
|
||
output_section_statement,
|
||
&s->group_statement.children.head,
|
||
fill, dot, relax);
|
||
break;
|
||
|
||
default:
|
||
FAIL ();
|
||
break;
|
||
|
||
/* This can only get here when relaxing is turned on. */
|
||
|
||
case lang_address_statement_enum:
|
||
break;
|
||
}
|
||
prev = &s->header.next;
|
||
}
|
||
return dot;
|
||
}
|
||
|
||
bfd_vma
|
||
lang_do_assignments (s, output_section_statement, fill, dot)
|
||
lang_statement_union_type *s;
|
||
lang_output_section_statement_type *output_section_statement;
|
||
fill_type fill;
|
||
bfd_vma dot;
|
||
{
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
|
||
for (; s != (lang_statement_union_type *) NULL; s = s->next)
|
||
{
|
||
switch (s->header.type)
|
||
{
|
||
case lang_constructors_statement_enum:
|
||
dot = lang_do_assignments (constructor_list.head,
|
||
output_section_statement,
|
||
fill,
|
||
dot);
|
||
break;
|
||
|
||
case lang_output_section_statement_enum:
|
||
{
|
||
lang_output_section_statement_type *os;
|
||
|
||
os = &(s->output_section_statement);
|
||
if (os->bfd_section != NULL)
|
||
{
|
||
dot = os->bfd_section->vma;
|
||
(void) lang_do_assignments (os->children.head, os,
|
||
os->fill, dot);
|
||
dot = os->bfd_section->vma + os->bfd_section->_raw_size / opb;
|
||
|
||
}
|
||
if (os->load_base)
|
||
{
|
||
/* If nothing has been placed into the output section then
|
||
it won't have a bfd_section. */
|
||
if (os->bfd_section)
|
||
{
|
||
os->bfd_section->lma
|
||
= exp_get_abs_int (os->load_base, 0, "load base",
|
||
lang_final_phase_enum);
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
case lang_wild_statement_enum:
|
||
|
||
dot = lang_do_assignments (s->wild_statement.children.head,
|
||
output_section_statement,
|
||
fill, dot);
|
||
|
||
break;
|
||
|
||
case lang_object_symbols_statement_enum:
|
||
case lang_output_statement_enum:
|
||
case lang_target_statement_enum:
|
||
#if 0
|
||
case lang_common_statement_enum:
|
||
#endif
|
||
break;
|
||
case lang_data_statement_enum:
|
||
{
|
||
etree_value_type value;
|
||
|
||
value = exp_fold_tree (s->data_statement.exp,
|
||
abs_output_section,
|
||
lang_final_phase_enum, dot, &dot);
|
||
s->data_statement.value = value.value;
|
||
if (value.valid_p == false)
|
||
einfo (_("%F%P: invalid data statement\n"));
|
||
}
|
||
{
|
||
unsigned int size;
|
||
switch (s->data_statement.type)
|
||
{
|
||
default:
|
||
abort ();
|
||
case QUAD:
|
||
case SQUAD:
|
||
size = QUAD_SIZE;
|
||
break;
|
||
case LONG:
|
||
size = LONG_SIZE;
|
||
break;
|
||
case SHORT:
|
||
size = SHORT_SIZE;
|
||
break;
|
||
case BYTE:
|
||
size = BYTE_SIZE;
|
||
break;
|
||
}
|
||
if (size < opb)
|
||
size = opb;
|
||
dot += size / opb;
|
||
}
|
||
break;
|
||
|
||
case lang_reloc_statement_enum:
|
||
{
|
||
etree_value_type value;
|
||
|
||
value = exp_fold_tree (s->reloc_statement.addend_exp,
|
||
abs_output_section,
|
||
lang_final_phase_enum, dot, &dot);
|
||
s->reloc_statement.addend_value = value.value;
|
||
if (value.valid_p == false)
|
||
einfo (_("%F%P: invalid reloc statement\n"));
|
||
}
|
||
dot += bfd_get_reloc_size (s->reloc_statement.howto) / opb;
|
||
break;
|
||
|
||
case lang_input_section_enum:
|
||
{
|
||
asection *in = s->input_section.section;
|
||
|
||
if (in->_cooked_size != 0)
|
||
dot += in->_cooked_size / opb;
|
||
else
|
||
dot += in->_raw_size / opb;
|
||
}
|
||
break;
|
||
|
||
case lang_input_statement_enum:
|
||
break;
|
||
case lang_fill_statement_enum:
|
||
fill = s->fill_statement.fill;
|
||
break;
|
||
case lang_assignment_statement_enum:
|
||
{
|
||
exp_fold_tree (s->assignment_statement.exp,
|
||
output_section_statement,
|
||
lang_final_phase_enum,
|
||
dot,
|
||
&dot);
|
||
}
|
||
|
||
break;
|
||
case lang_padding_statement_enum:
|
||
dot += s->padding_statement.size / opb;
|
||
break;
|
||
|
||
case lang_group_statement_enum:
|
||
dot = lang_do_assignments (s->group_statement.children.head,
|
||
output_section_statement,
|
||
fill, dot);
|
||
|
||
break;
|
||
|
||
default:
|
||
FAIL ();
|
||
break;
|
||
case lang_address_statement_enum:
|
||
break;
|
||
}
|
||
|
||
}
|
||
return dot;
|
||
}
|
||
|
||
/* Fix any .startof. or .sizeof. symbols. When the assemblers see the
|
||
operator .startof. (section_name), it produces an undefined symbol
|
||
.startof.section_name. Similarly, when it sees
|
||
.sizeof. (section_name), it produces an undefined symbol
|
||
.sizeof.section_name. For all the output sections, we look for
|
||
such symbols, and set them to the correct value. */
|
||
|
||
static void
|
||
lang_set_startof ()
|
||
{
|
||
asection *s;
|
||
|
||
if (link_info.relocateable)
|
||
return;
|
||
|
||
for (s = output_bfd->sections; s != NULL; s = s->next)
|
||
{
|
||
const char *secname;
|
||
char *buf;
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
secname = bfd_get_section_name (output_bfd, s);
|
||
buf = xmalloc (10 + strlen (secname));
|
||
|
||
sprintf (buf, ".startof.%s", secname);
|
||
h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
|
||
if (h != NULL && h->type == bfd_link_hash_undefined)
|
||
{
|
||
h->type = bfd_link_hash_defined;
|
||
h->u.def.value = bfd_get_section_vma (output_bfd, s);
|
||
h->u.def.section = bfd_abs_section_ptr;
|
||
}
|
||
|
||
sprintf (buf, ".sizeof.%s", secname);
|
||
h = bfd_link_hash_lookup (link_info.hash, buf, false, false, true);
|
||
if (h != NULL && h->type == bfd_link_hash_undefined)
|
||
{
|
||
unsigned opb;
|
||
|
||
opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
h->type = bfd_link_hash_defined;
|
||
if (s->_cooked_size != 0)
|
||
h->u.def.value = s->_cooked_size / opb;
|
||
else
|
||
h->u.def.value = s->_raw_size / opb;
|
||
h->u.def.section = bfd_abs_section_ptr;
|
||
}
|
||
|
||
free (buf);
|
||
}
|
||
}
|
||
|
||
static void
|
||
lang_finish ()
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
boolean warn;
|
||
|
||
if (link_info.relocateable || link_info.shared)
|
||
warn = false;
|
||
else
|
||
warn = true;
|
||
|
||
if (entry_symbol == (char *) NULL)
|
||
{
|
||
/* No entry has been specified. Look for start, but don't warn
|
||
if we don't find it. */
|
||
entry_symbol = "start";
|
||
warn = false;
|
||
}
|
||
|
||
h = bfd_link_hash_lookup (link_info.hash, entry_symbol, false, false, true);
|
||
if (h != (struct bfd_link_hash_entry *) NULL
|
||
&& (h->type == bfd_link_hash_defined
|
||
|| h->type == bfd_link_hash_defweak)
|
||
&& h->u.def.section->output_section != NULL)
|
||
{
|
||
bfd_vma val;
|
||
|
||
val = (h->u.def.value
|
||
+ bfd_get_section_vma (output_bfd,
|
||
h->u.def.section->output_section)
|
||
+ h->u.def.section->output_offset);
|
||
if (! bfd_set_start_address (output_bfd, val))
|
||
einfo (_("%P%F:%s: can't set start address\n"), entry_symbol);
|
||
}
|
||
else
|
||
{
|
||
bfd_vma val;
|
||
const char *send;
|
||
|
||
/* We couldn't find the entry symbol. Try parsing it as a
|
||
number. */
|
||
val = bfd_scan_vma (entry_symbol, &send, 0);
|
||
if (*send == '\0')
|
||
{
|
||
if (! bfd_set_start_address (output_bfd, val))
|
||
einfo (_("%P%F: can't set start address\n"));
|
||
}
|
||
else
|
||
{
|
||
asection *ts;
|
||
|
||
/* Can't find the entry symbol, and it's not a number. Use
|
||
the first address in the text section. */
|
||
ts = bfd_get_section_by_name (output_bfd, ".text");
|
||
if (ts != (asection *) NULL)
|
||
{
|
||
if (warn)
|
||
einfo (_("%P: warning: cannot find entry symbol %s; defaulting to %V\n"),
|
||
entry_symbol, bfd_get_section_vma (output_bfd, ts));
|
||
if (! bfd_set_start_address (output_bfd,
|
||
bfd_get_section_vma (output_bfd,
|
||
ts)))
|
||
einfo (_("%P%F: can't set start address\n"));
|
||
}
|
||
else
|
||
{
|
||
if (warn)
|
||
einfo (_("%P: warning: cannot find entry symbol %s; not setting start address\n"),
|
||
entry_symbol);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
/* This is a small function used when we want to ignore errors from
|
||
BFD. */
|
||
|
||
static void
|
||
#ifdef ANSI_PROTOTYPES
|
||
ignore_bfd_errors (const char *s ATTRIBUTE_UNUSED, ...)
|
||
#else
|
||
ignore_bfd_errors (s)
|
||
const char *s ATTRIBUTE_UNUSED;
|
||
#endif
|
||
{
|
||
/* Don't do anything. */
|
||
}
|
||
|
||
/* Check that the architecture of all the input files is compatible
|
||
with the output file. Also call the backend to let it do any
|
||
other checking that is needed. */
|
||
|
||
static void
|
||
lang_check ()
|
||
{
|
||
lang_statement_union_type *file;
|
||
bfd *input_bfd;
|
||
const bfd_arch_info_type *compatible;
|
||
|
||
for (file = file_chain.head;
|
||
file != (lang_statement_union_type *) NULL;
|
||
file = file->input_statement.next)
|
||
{
|
||
input_bfd = file->input_statement.the_bfd;
|
||
compatible = bfd_arch_get_compatible (input_bfd,
|
||
output_bfd);
|
||
if (compatible == NULL)
|
||
{
|
||
if (command_line.warn_mismatch)
|
||
einfo (_("%P: warning: %s architecture of input file `%B' is incompatible with %s output\n"),
|
||
bfd_printable_name (input_bfd), input_bfd,
|
||
bfd_printable_name (output_bfd));
|
||
}
|
||
else if (bfd_count_sections (input_bfd))
|
||
{
|
||
/* If the input bfd has no contents, it shouldn't set the
|
||
private data of the output bfd. */
|
||
|
||
bfd_error_handler_type pfn = NULL;
|
||
|
||
/* If we aren't supposed to warn about mismatched input
|
||
files, temporarily set the BFD error handler to a
|
||
function which will do nothing. We still want to call
|
||
bfd_merge_private_bfd_data, since it may set up
|
||
information which is needed in the output file. */
|
||
if (! command_line.warn_mismatch)
|
||
pfn = bfd_set_error_handler (ignore_bfd_errors);
|
||
if (! bfd_merge_private_bfd_data (input_bfd, output_bfd))
|
||
{
|
||
if (command_line.warn_mismatch)
|
||
einfo (_("%E%X: failed to merge target specific data of file %B\n"),
|
||
input_bfd);
|
||
}
|
||
if (! command_line.warn_mismatch)
|
||
bfd_set_error_handler (pfn);
|
||
}
|
||
}
|
||
}
|
||
|
||
/* Look through all the global common symbols and attach them to the
|
||
correct section. The -sort-common command line switch may be used
|
||
to roughly sort the entries by size. */
|
||
|
||
static void
|
||
lang_common ()
|
||
{
|
||
if (link_info.relocateable
|
||
&& ! command_line.force_common_definition)
|
||
return;
|
||
|
||
if (! config.sort_common)
|
||
bfd_link_hash_traverse (link_info.hash, lang_one_common, (PTR) NULL);
|
||
else
|
||
{
|
||
int power;
|
||
|
||
for (power = 4; power >= 0; power--)
|
||
bfd_link_hash_traverse (link_info.hash, lang_one_common,
|
||
(PTR) &power);
|
||
}
|
||
}
|
||
|
||
/* Place one common symbol in the correct section. */
|
||
|
||
static boolean
|
||
lang_one_common (h, info)
|
||
struct bfd_link_hash_entry *h;
|
||
PTR info;
|
||
{
|
||
unsigned int power_of_two;
|
||
bfd_vma size;
|
||
asection *section;
|
||
unsigned opb = bfd_arch_mach_octets_per_byte (ldfile_output_architecture,
|
||
ldfile_output_machine);
|
||
|
||
if (h->type != bfd_link_hash_common)
|
||
return true;
|
||
|
||
size = h->u.c.size;
|
||
power_of_two = h->u.c.p->alignment_power;
|
||
|
||
if (config.sort_common
|
||
&& power_of_two < (unsigned int) *(int *) info)
|
||
return true;
|
||
|
||
section = h->u.c.p->section;
|
||
|
||
/* Increase the size of the section. */
|
||
section->_cooked_size = ALIGN_N ((section->_cooked_size + opb - 1) / opb,
|
||
(bfd_size_type) (1 << power_of_two)) * opb;
|
||
|
||
/* Adjust the alignment if necessary. */
|
||
if (power_of_two > section->alignment_power)
|
||
section->alignment_power = power_of_two;
|
||
|
||
/* Change the symbol from common to defined. */
|
||
h->type = bfd_link_hash_defined;
|
||
h->u.def.section = section;
|
||
h->u.def.value = section->_cooked_size;
|
||
|
||
/* Increase the size of the section. */
|
||
section->_cooked_size += size;
|
||
|
||
/* Make sure the section is allocated in memory, and make sure that
|
||
it is no longer a common section. */
|
||
section->flags |= SEC_ALLOC;
|
||
section->flags &= ~SEC_IS_COMMON;
|
||
|
||
if (config.map_file != NULL)
|
||
{
|
||
static boolean header_printed;
|
||
int len;
|
||
char *name;
|
||
char buf[50];
|
||
|
||
if (! header_printed)
|
||
{
|
||
minfo (_("\nAllocating common symbols\n"));
|
||
minfo (_("Common symbol size file\n\n"));
|
||
header_printed = true;
|
||
}
|
||
|
||
name = demangle (h->root.string);
|
||
minfo ("%s", name);
|
||
len = strlen (name);
|
||
free (name);
|
||
|
||
if (len >= 19)
|
||
{
|
||
print_nl ();
|
||
len = 0;
|
||
}
|
||
while (len < 20)
|
||
{
|
||
print_space ();
|
||
++len;
|
||
}
|
||
|
||
minfo ("0x");
|
||
if (size <= 0xffffffff)
|
||
sprintf (buf, "%lx", (unsigned long) size);
|
||
else
|
||
sprintf_vma (buf, size);
|
||
minfo ("%s", buf);
|
||
len = strlen (buf);
|
||
|
||
while (len < 16)
|
||
{
|
||
print_space ();
|
||
++len;
|
||
}
|
||
|
||
minfo ("%B\n", section->owner);
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Run through the input files and ensure that every input section has
|
||
somewhere to go. If one is found without a destination then create
|
||
an input request and place it into the statement tree. */
|
||
|
||
static void
|
||
lang_place_orphans ()
|
||
{
|
||
LANG_FOR_EACH_INPUT_STATEMENT (file)
|
||
{
|
||
asection *s;
|
||
|
||
for (s = file->the_bfd->sections;
|
||
s != (asection *) NULL;
|
||
s = s->next)
|
||
{
|
||
if (s->output_section == (asection *) NULL)
|
||
{
|
||
/* This section of the file is not attatched, root
|
||
around for a sensible place for it to go. */
|
||
|
||
if (file->just_syms_flag)
|
||
{
|
||
/* We are only retrieving symbol values from this
|
||
file. We want the symbols to act as though the
|
||
values in the file are absolute. */
|
||
s->output_section = bfd_abs_section_ptr;
|
||
s->output_offset = s->vma;
|
||
}
|
||
else if (strcmp (s->name, "COMMON") == 0)
|
||
{
|
||
/* This is a lonely common section which must have
|
||
come from an archive. We attach to the section
|
||
with the wildcard. */
|
||
if (! link_info.relocateable
|
||
|| command_line.force_common_definition)
|
||
{
|
||
if (default_common_section == NULL)
|
||
{
|
||
#if 0
|
||
/* This message happens when using the
|
||
svr3.ifile linker script, so I have
|
||
disabled it. */
|
||
info_msg (_("%P: no [COMMON] command, defaulting to .bss\n"));
|
||
#endif
|
||
default_common_section =
|
||
lang_output_section_statement_lookup (".bss");
|
||
|
||
}
|
||
wild_doit (&default_common_section->children, s,
|
||
default_common_section, file);
|
||
}
|
||
}
|
||
else if (ldemul_place_orphan (file, s))
|
||
;
|
||
else
|
||
{
|
||
lang_output_section_statement_type *os =
|
||
lang_output_section_statement_lookup (s->name);
|
||
|
||
wild_doit (&os->children, s, os, file);
|
||
}
|
||
}
|
||
}
|
||
}
|
||
}
|
||
|
||
void
|
||
lang_set_flags (ptr, flags, invert)
|
||
lang_memory_region_type *ptr;
|
||
const char *flags;
|
||
int invert;
|
||
{
|
||
flagword *ptr_flags;
|
||
|
||
ptr_flags = invert ? &ptr->not_flags : &ptr->flags;
|
||
while (*flags)
|
||
{
|
||
switch (*flags)
|
||
{
|
||
case 'A': case 'a':
|
||
*ptr_flags |= SEC_ALLOC;
|
||
break;
|
||
|
||
case 'R': case 'r':
|
||
*ptr_flags |= SEC_READONLY;
|
||
break;
|
||
|
||
case 'W': case 'w':
|
||
*ptr_flags |= SEC_DATA;
|
||
break;
|
||
|
||
case 'X': case 'x':
|
||
*ptr_flags |= SEC_CODE;
|
||
break;
|
||
|
||
case 'L': case 'l':
|
||
case 'I': case 'i':
|
||
*ptr_flags |= SEC_LOAD;
|
||
break;
|
||
|
||
default:
|
||
einfo (_("%P%F: invalid syntax in flags\n"));
|
||
break;
|
||
}
|
||
flags++;
|
||
}
|
||
}
|
||
|
||
/* Call a function on each input file. This function will be called
|
||
on an archive, but not on the elements. */
|
||
|
||
void
|
||
lang_for_each_input_file (func)
|
||
void (*func) PARAMS ((lang_input_statement_type *));
|
||
{
|
||
lang_input_statement_type *f;
|
||
|
||
for (f = (lang_input_statement_type *) input_file_chain.head;
|
||
f != NULL;
|
||
f = (lang_input_statement_type *) f->next_real_file)
|
||
func (f);
|
||
}
|
||
|
||
/* Call a function on each file. The function will be called on all
|
||
the elements of an archive which are included in the link, but will
|
||
not be called on the archive file itself. */
|
||
|
||
void
|
||
lang_for_each_file (func)
|
||
void (*func) PARAMS ((lang_input_statement_type *));
|
||
{
|
||
LANG_FOR_EACH_INPUT_STATEMENT (f)
|
||
{
|
||
func (f);
|
||
}
|
||
}
|
||
|
||
#if 0
|
||
|
||
/* Not used. */
|
||
|
||
void
|
||
lang_for_each_input_section (func)
|
||
void (*func) PARAMS ((bfd *ab, asection *as));
|
||
{
|
||
LANG_FOR_EACH_INPUT_STATEMENT (f)
|
||
{
|
||
asection *s;
|
||
|
||
for (s = f->the_bfd->sections;
|
||
s != (asection *) NULL;
|
||
s = s->next)
|
||
{
|
||
func (f->the_bfd, s);
|
||
}
|
||
}
|
||
}
|
||
|
||
#endif
|
||
|
||
void
|
||
ldlang_add_file (entry)
|
||
lang_input_statement_type *entry;
|
||
{
|
||
bfd **pp;
|
||
|
||
lang_statement_append (&file_chain,
|
||
(lang_statement_union_type *) entry,
|
||
&entry->next);
|
||
|
||
/* The BFD linker needs to have a list of all input BFDs involved in
|
||
a link. */
|
||
ASSERT (entry->the_bfd->link_next == (bfd *) NULL);
|
||
ASSERT (entry->the_bfd != output_bfd);
|
||
for (pp = &link_info.input_bfds;
|
||
*pp != (bfd *) NULL;
|
||
pp = &(*pp)->link_next)
|
||
;
|
||
*pp = entry->the_bfd;
|
||
entry->the_bfd->usrdata = (PTR) entry;
|
||
bfd_set_gp_size (entry->the_bfd, g_switch_value);
|
||
|
||
/* Look through the sections and check for any which should not be
|
||
included in the link. We need to do this now, so that we can
|
||
notice when the backend linker tries to report multiple
|
||
definition errors for symbols which are in sections we aren't
|
||
going to link. FIXME: It might be better to entirely ignore
|
||
symbols which are defined in sections which are going to be
|
||
discarded. This would require modifying the backend linker for
|
||
each backend which might set the SEC_LINK_ONCE flag. If we do
|
||
this, we should probably handle SEC_EXCLUDE in the same way. */
|
||
|
||
bfd_map_over_sections (entry->the_bfd, section_already_linked, (PTR) entry);
|
||
}
|
||
|
||
void
|
||
lang_add_output (name, from_script)
|
||
const char *name;
|
||
int from_script;
|
||
{
|
||
/* Make -o on command line override OUTPUT in script. */
|
||
if (had_output_filename == false || !from_script)
|
||
{
|
||
output_filename = name;
|
||
had_output_filename = true;
|
||
}
|
||
}
|
||
|
||
static lang_output_section_statement_type *current_section;
|
||
|
||
static int
|
||
topower (x)
|
||
int x;
|
||
{
|
||
unsigned int i = 1;
|
||
int l;
|
||
|
||
if (x < 0)
|
||
return -1;
|
||
|
||
for (l = 0; l < 32; l++)
|
||
{
|
||
if (i >= (unsigned int) x)
|
||
return l;
|
||
i <<= 1;
|
||
}
|
||
|
||
return 0;
|
||
}
|
||
|
||
lang_output_section_statement_type *
|
||
lang_enter_output_section_statement (output_section_statement_name,
|
||
address_exp, sectype, block_value,
|
||
align, subalign, ebase)
|
||
const char *output_section_statement_name;
|
||
etree_type *address_exp;
|
||
enum section_type sectype;
|
||
bfd_vma block_value;
|
||
etree_type *align;
|
||
etree_type *subalign;
|
||
etree_type *ebase;
|
||
{
|
||
lang_output_section_statement_type *os;
|
||
|
||
current_section =
|
||
os =
|
||
lang_output_section_statement_lookup (output_section_statement_name);
|
||
|
||
/* Add this statement to tree. */
|
||
#if 0
|
||
add_statement (lang_output_section_statement_enum,
|
||
output_section_statement);
|
||
#endif
|
||
/* Make next things chain into subchain of this. */
|
||
|
||
if (os->addr_tree == (etree_type *) NULL)
|
||
{
|
||
os->addr_tree = address_exp;
|
||
}
|
||
os->sectype = sectype;
|
||
if (sectype != noload_section)
|
||
os->flags = SEC_NO_FLAGS;
|
||
else
|
||
os->flags = SEC_NEVER_LOAD;
|
||
os->block_value = block_value ? block_value : 1;
|
||
stat_ptr = &os->children;
|
||
|
||
os->subsection_alignment =
|
||
topower (exp_get_value_int (subalign, -1, "subsection alignment", 0));
|
||
os->section_alignment =
|
||
topower (exp_get_value_int (align, -1, "section alignment", 0));
|
||
|
||
os->load_base = ebase;
|
||
return os;
|
||
}
|
||
|
||
void
|
||
lang_final ()
|
||
{
|
||
lang_output_statement_type *new =
|
||
new_stat (lang_output_statement, stat_ptr);
|
||
|
||
new->name = output_filename;
|
||
}
|
||
|
||
/* Reset the current counters in the regions. */
|
||
|
||
static void
|
||
reset_memory_regions ()
|
||
{
|
||
lang_memory_region_type *p = lang_memory_region_list;
|
||
|
||
for (p = lang_memory_region_list;
|
||
p != (lang_memory_region_type *) NULL;
|
||
p = p->next)
|
||
{
|
||
p->old_length = (bfd_size_type) (p->current - p->origin);
|
||
p->current = p->origin;
|
||
}
|
||
}
|
||
|
||
/* Expand a wild statement for a particular FILE, marking its sections KEEP
|
||
as needed. SECTION may be NULL, in which case it is a wild card. */
|
||
|
||
static void
|
||
gc_section_callback (ptr, section, file, data)
|
||
lang_wild_statement_type *ptr;
|
||
asection *section;
|
||
lang_input_statement_type *file ATTRIBUTE_UNUSED;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
{
|
||
/* If the wild pattern was marked KEEP, the member sections
|
||
should be as well. */
|
||
if (ptr->keep_sections)
|
||
section->flags |= SEC_KEEP;
|
||
}
|
||
|
||
/* Handle a wild statement, marking it against GC. SECTION or FILE or both
|
||
may be NULL, indicating that it is a wildcard. */
|
||
|
||
static void
|
||
lang_gc_wild (s, section, file)
|
||
lang_wild_statement_type *s;
|
||
const char *section;
|
||
const char *file;
|
||
{
|
||
walk_wild (s, section, file, gc_section_callback, NULL);
|
||
}
|
||
|
||
/* Iterate over sections marking them against GC. */
|
||
|
||
static void
|
||
lang_gc_sections_1 (s)
|
||
lang_statement_union_type *s;
|
||
{
|
||
for (; s != (lang_statement_union_type *) NULL; s = s->next)
|
||
{
|
||
switch (s->header.type)
|
||
{
|
||
case lang_wild_statement_enum:
|
||
lang_gc_wild (&s->wild_statement,
|
||
s->wild_statement.section_name,
|
||
s->wild_statement.filename);
|
||
break;
|
||
case lang_constructors_statement_enum:
|
||
lang_gc_sections_1 (constructor_list.head);
|
||
break;
|
||
case lang_output_section_statement_enum:
|
||
lang_gc_sections_1 (s->output_section_statement.children.head);
|
||
break;
|
||
case lang_group_statement_enum:
|
||
lang_gc_sections_1 (s->group_statement.children.head);
|
||
break;
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
static void
|
||
lang_gc_sections ()
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
ldlang_undef_chain_list_type *ulist, fake_list_start;
|
||
|
||
/* Keep all sections so marked in the link script. */
|
||
|
||
lang_gc_sections_1 (statement_list.head);
|
||
|
||
/* Keep all sections containing symbols undefined on the command-line.
|
||
Handle the entry symbol at the same time. */
|
||
|
||
if (entry_symbol != NULL)
|
||
{
|
||
fake_list_start.next = ldlang_undef_chain_list_head;
|
||
fake_list_start.name = (char *) entry_symbol;
|
||
ulist = &fake_list_start;
|
||
}
|
||
else
|
||
ulist = ldlang_undef_chain_list_head;
|
||
|
||
for (; ulist; ulist = ulist->next)
|
||
{
|
||
h = bfd_link_hash_lookup (link_info.hash, ulist->name,
|
||
false, false, false);
|
||
|
||
if (h != (struct bfd_link_hash_entry *) NULL
|
||
&& (h->type == bfd_link_hash_defined
|
||
|| h->type == bfd_link_hash_defweak)
|
||
&& ! bfd_is_abs_section (h->u.def.section))
|
||
{
|
||
h->u.def.section->flags |= SEC_KEEP;
|
||
}
|
||
}
|
||
|
||
bfd_gc_sections (output_bfd, &link_info);
|
||
}
|
||
|
||
void
|
||
lang_process ()
|
||
{
|
||
lang_reasonable_defaults ();
|
||
current_target = default_target;
|
||
|
||
/* Open the output file. */
|
||
lang_for_each_statement (ldlang_open_output);
|
||
|
||
ldemul_create_output_section_statements ();
|
||
|
||
/* Add to the hash table all undefineds on the command line. */
|
||
lang_place_undefineds ();
|
||
|
||
already_linked_table_init ();
|
||
|
||
/* Create a bfd for each input file. */
|
||
current_target = default_target;
|
||
open_input_bfds (statement_list.head, false);
|
||
|
||
ldemul_after_open ();
|
||
|
||
already_linked_table_free ();
|
||
|
||
/* Make sure that we're not mixing architectures. We call this
|
||
after all the input files have been opened, but before we do any
|
||
other processing, so that any operations merge_private_bfd_data
|
||
does on the output file will be known during the rest of the
|
||
link. */
|
||
lang_check ();
|
||
|
||
/* Handle .exports instead of a version script if we're told to do so. */
|
||
if (command_line.version_exports_section)
|
||
lang_do_version_exports_section ();
|
||
|
||
/* Build all sets based on the information gathered from the input
|
||
files. */
|
||
ldctor_build_sets ();
|
||
|
||
/* Remove unreferenced sections if asked to. */
|
||
if (command_line.gc_sections)
|
||
lang_gc_sections ();
|
||
|
||
/* Size up the common data. */
|
||
lang_common ();
|
||
|
||
/* Run through the contours of the script and attach input sections
|
||
to the correct output sections. */
|
||
map_input_to_output_sections (statement_list.head, (char *) NULL,
|
||
(lang_output_section_statement_type *) NULL);
|
||
|
||
/* Find any sections not attached explicitly and handle them. */
|
||
lang_place_orphans ();
|
||
|
||
ldemul_before_allocation ();
|
||
|
||
/* We must record the program headers before we try to fix the
|
||
section positions, since they will affect SIZEOF_HEADERS. */
|
||
lang_record_phdrs ();
|
||
|
||
/* Now run around and relax if we can. */
|
||
if (command_line.relax)
|
||
{
|
||
/* First time round is a trial run to get the 'worst case'
|
||
addresses of the objects if there was no relaxing. */
|
||
lang_size_sections (statement_list.head,
|
||
abs_output_section,
|
||
&(statement_list.head), 0, (bfd_vma) 0, false);
|
||
|
||
/* Keep relaxing until bfd_relax_section gives up. */
|
||
do
|
||
{
|
||
reset_memory_regions ();
|
||
|
||
relax_again = false;
|
||
|
||
/* Note: pe-dll.c does something like this also. If you find
|
||
you need to change this code, you probably need to change
|
||
pe-dll.c also. DJ */
|
||
|
||
/* Do all the assignments with our current guesses as to
|
||
section sizes. */
|
||
lang_do_assignments (statement_list.head,
|
||
abs_output_section,
|
||
(fill_type) 0, (bfd_vma) 0);
|
||
|
||
/* Perform another relax pass - this time we know where the
|
||
globals are, so can make better guess. */
|
||
lang_size_sections (statement_list.head,
|
||
abs_output_section,
|
||
&(statement_list.head), 0, (bfd_vma) 0, true);
|
||
}
|
||
while (relax_again);
|
||
}
|
||
else
|
||
{
|
||
/* Size up the sections. */
|
||
lang_size_sections (statement_list.head,
|
||
abs_output_section,
|
||
&(statement_list.head), 0, (bfd_vma) 0, false);
|
||
}
|
||
|
||
/* See if anything special should be done now we know how big
|
||
everything is. */
|
||
ldemul_after_allocation ();
|
||
|
||
/* Fix any .startof. or .sizeof. symbols. */
|
||
lang_set_startof ();
|
||
|
||
/* Do all the assignments, now that we know the final resting places
|
||
of all the symbols. */
|
||
|
||
lang_do_assignments (statement_list.head,
|
||
abs_output_section,
|
||
(fill_type) 0, (bfd_vma) 0);
|
||
|
||
/* Make sure that the section addresses make sense. */
|
||
if (! link_info.relocateable
|
||
&& command_line.check_section_addresses)
|
||
lang_check_section_addresses ();
|
||
|
||
/* Final stuffs. */
|
||
|
||
ldemul_finish ();
|
||
lang_finish ();
|
||
}
|
||
|
||
/* EXPORTED TO YACC */
|
||
|
||
void
|
||
lang_add_wild (section_name, sections_sorted, filename, filenames_sorted,
|
||
keep_sections, exclude_filename_list)
|
||
const char *const section_name;
|
||
boolean sections_sorted;
|
||
const char *const filename;
|
||
boolean filenames_sorted;
|
||
boolean keep_sections;
|
||
struct name_list *exclude_filename_list;
|
||
{
|
||
lang_wild_statement_type *new = new_stat (lang_wild_statement,
|
||
stat_ptr);
|
||
|
||
if (section_name != (char *) NULL && strcmp (section_name, "COMMON") == 0)
|
||
{
|
||
placed_commons = true;
|
||
}
|
||
if (filename != NULL && ! wildcardp (filename))
|
||
{
|
||
lang_has_input_file = true;
|
||
}
|
||
new->section_name = section_name;
|
||
new->sections_sorted = sections_sorted;
|
||
new->filename = filename;
|
||
new->filenames_sorted = filenames_sorted;
|
||
new->keep_sections = keep_sections;
|
||
new->exclude_filename_list = exclude_filename_list;
|
||
lang_list_init (&new->children);
|
||
}
|
||
|
||
void
|
||
lang_section_start (name, address)
|
||
const char *name;
|
||
etree_type *address;
|
||
{
|
||
lang_address_statement_type *ad;
|
||
|
||
ad = new_stat (lang_address_statement, stat_ptr);
|
||
ad->section_name = name;
|
||
ad->address = address;
|
||
}
|
||
|
||
/* Set the start symbol to NAME. CMDLINE is nonzero if this is called
|
||
because of a -e argument on the command line, or zero if this is
|
||
called by ENTRY in a linker script. Command line arguments take
|
||
precedence. */
|
||
|
||
void
|
||
lang_add_entry (name, cmdline)
|
||
const char *name;
|
||
boolean cmdline;
|
||
{
|
||
if (entry_symbol == NULL
|
||
|| cmdline
|
||
|| ! entry_from_cmdline)
|
||
{
|
||
entry_symbol = name;
|
||
entry_from_cmdline = cmdline;
|
||
}
|
||
}
|
||
|
||
void
|
||
lang_add_target (name)
|
||
const char *name;
|
||
{
|
||
lang_target_statement_type *new = new_stat (lang_target_statement,
|
||
stat_ptr);
|
||
|
||
new->target = name;
|
||
|
||
}
|
||
|
||
void
|
||
lang_add_map (name)
|
||
const char *name;
|
||
{
|
||
while (*name)
|
||
{
|
||
switch (*name)
|
||
{
|
||
case 'F':
|
||
map_option_f = true;
|
||
break;
|
||
}
|
||
name++;
|
||
}
|
||
}
|
||
|
||
void
|
||
lang_add_fill (exp)
|
||
int exp;
|
||
{
|
||
lang_fill_statement_type *new = new_stat (lang_fill_statement,
|
||
stat_ptr);
|
||
|
||
new->fill = exp;
|
||
}
|
||
|
||
void
|
||
lang_add_data (type, exp)
|
||
int type;
|
||
union etree_union *exp;
|
||
{
|
||
|
||
lang_data_statement_type *new = new_stat (lang_data_statement,
|
||
stat_ptr);
|
||
|
||
new->exp = exp;
|
||
new->type = type;
|
||
|
||
}
|
||
|
||
/* Create a new reloc statement. RELOC is the BFD relocation type to
|
||
generate. HOWTO is the corresponding howto structure (we could
|
||
look this up, but the caller has already done so). SECTION is the
|
||
section to generate a reloc against, or NAME is the name of the
|
||
symbol to generate a reloc against. Exactly one of SECTION and
|
||
NAME must be NULL. ADDEND is an expression for the addend. */
|
||
|
||
void
|
||
lang_add_reloc (reloc, howto, section, name, addend)
|
||
bfd_reloc_code_real_type reloc;
|
||
reloc_howto_type *howto;
|
||
asection *section;
|
||
const char *name;
|
||
union etree_union *addend;
|
||
{
|
||
lang_reloc_statement_type *p = new_stat (lang_reloc_statement, stat_ptr);
|
||
|
||
p->reloc = reloc;
|
||
p->howto = howto;
|
||
p->section = section;
|
||
p->name = name;
|
||
p->addend_exp = addend;
|
||
|
||
p->addend_value = 0;
|
||
p->output_section = NULL;
|
||
p->output_vma = 0;
|
||
}
|
||
|
||
lang_assignment_statement_type *
|
||
lang_add_assignment (exp)
|
||
etree_type *exp;
|
||
{
|
||
lang_assignment_statement_type *new = new_stat (lang_assignment_statement,
|
||
stat_ptr);
|
||
|
||
new->exp = exp;
|
||
return new;
|
||
}
|
||
|
||
void
|
||
lang_add_attribute (attribute)
|
||
enum statement_enum attribute;
|
||
{
|
||
new_statement (attribute, sizeof (lang_statement_union_type), stat_ptr);
|
||
}
|
||
|
||
void
|
||
lang_startup (name)
|
||
const char *name;
|
||
{
|
||
if (startup_file != (char *) NULL)
|
||
{
|
||
einfo (_("%P%Fmultiple STARTUP files\n"));
|
||
}
|
||
first_file->filename = name;
|
||
first_file->local_sym_name = name;
|
||
first_file->real = true;
|
||
|
||
startup_file = name;
|
||
}
|
||
|
||
void
|
||
lang_float (maybe)
|
||
boolean maybe;
|
||
{
|
||
lang_float_flag = maybe;
|
||
}
|
||
|
||
void
|
||
lang_leave_output_section_statement (fill, memspec, phdrs, lma_memspec)
|
||
bfd_vma fill;
|
||
const char *memspec;
|
||
struct lang_output_section_phdr_list *phdrs;
|
||
const char *lma_memspec;
|
||
{
|
||
current_section->fill = fill;
|
||
current_section->region = lang_memory_region_lookup (memspec);
|
||
if (strcmp (lma_memspec, "*default*") != 0)
|
||
{
|
||
current_section->lma_region = lang_memory_region_lookup (lma_memspec);
|
||
/* If no runtime region has been given, but the load region has
|
||
been, use the load region. */
|
||
if (strcmp (memspec, "*default*") == 0)
|
||
current_section->region = lang_memory_region_lookup (lma_memspec);
|
||
}
|
||
current_section->phdrs = phdrs;
|
||
stat_ptr = &statement_list;
|
||
}
|
||
|
||
/* Create an absolute symbol with the given name with the value of the
|
||
address of first byte of the section named.
|
||
|
||
If the symbol already exists, then do nothing. */
|
||
|
||
void
|
||
lang_abs_symbol_at_beginning_of (secname, name)
|
||
const char *secname;
|
||
const char *name;
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
|
||
if (h == (struct bfd_link_hash_entry *) NULL)
|
||
einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
|
||
|
||
if (h->type == bfd_link_hash_new
|
||
|| h->type == bfd_link_hash_undefined)
|
||
{
|
||
asection *sec;
|
||
|
||
h->type = bfd_link_hash_defined;
|
||
|
||
sec = bfd_get_section_by_name (output_bfd, secname);
|
||
if (sec == (asection *) NULL)
|
||
h->u.def.value = 0;
|
||
else
|
||
h->u.def.value = bfd_get_section_vma (output_bfd, sec);
|
||
|
||
h->u.def.section = bfd_abs_section_ptr;
|
||
}
|
||
}
|
||
|
||
/* Create an absolute symbol with the given name with the value of the
|
||
address of the first byte after the end of the section named.
|
||
|
||
If the symbol already exists, then do nothing. */
|
||
|
||
void
|
||
lang_abs_symbol_at_end_of (secname, name)
|
||
const char *secname;
|
||
const char *name;
|
||
{
|
||
struct bfd_link_hash_entry *h;
|
||
|
||
h = bfd_link_hash_lookup (link_info.hash, name, true, true, true);
|
||
if (h == (struct bfd_link_hash_entry *) NULL)
|
||
einfo (_("%P%F: bfd_link_hash_lookup failed: %E\n"));
|
||
|
||
if (h->type == bfd_link_hash_new
|
||
|| h->type == bfd_link_hash_undefined)
|
||
{
|
||
asection *sec;
|
||
|
||
h->type = bfd_link_hash_defined;
|
||
|
||
sec = bfd_get_section_by_name (output_bfd, secname);
|
||
if (sec == (asection *) NULL)
|
||
h->u.def.value = 0;
|
||
else
|
||
h->u.def.value = (bfd_get_section_vma (output_bfd, sec)
|
||
+ bfd_section_size (output_bfd, sec) /
|
||
bfd_octets_per_byte (output_bfd));
|
||
|
||
h->u.def.section = bfd_abs_section_ptr;
|
||
}
|
||
}
|
||
|
||
void
|
||
lang_statement_append (list, element, field)
|
||
lang_statement_list_type *list;
|
||
lang_statement_union_type *element;
|
||
lang_statement_union_type **field;
|
||
{
|
||
*(list->tail) = element;
|
||
list->tail = field;
|
||
}
|
||
|
||
/* Set the output format type. -oformat overrides scripts. */
|
||
|
||
void
|
||
lang_add_output_format (format, big, little, from_script)
|
||
const char *format;
|
||
const char *big;
|
||
const char *little;
|
||
int from_script;
|
||
{
|
||
if (output_target == NULL || !from_script)
|
||
{
|
||
if (command_line.endian == ENDIAN_BIG
|
||
&& big != NULL)
|
||
format = big;
|
||
else if (command_line.endian == ENDIAN_LITTLE
|
||
&& little != NULL)
|
||
format = little;
|
||
|
||
output_target = format;
|
||
}
|
||
}
|
||
|
||
/* Enter a group. This creates a new lang_group_statement, and sets
|
||
stat_ptr to build new statements within the group. */
|
||
|
||
void
|
||
lang_enter_group ()
|
||
{
|
||
lang_group_statement_type *g;
|
||
|
||
g = new_stat (lang_group_statement, stat_ptr);
|
||
lang_list_init (&g->children);
|
||
stat_ptr = &g->children;
|
||
}
|
||
|
||
/* Leave a group. This just resets stat_ptr to start writing to the
|
||
regular list of statements again. Note that this will not work if
|
||
groups can occur inside anything else which can adjust stat_ptr,
|
||
but currently they can't. */
|
||
|
||
void
|
||
lang_leave_group ()
|
||
{
|
||
stat_ptr = &statement_list;
|
||
}
|
||
|
||
/* Add a new program header. This is called for each entry in a PHDRS
|
||
command in a linker script. */
|
||
|
||
void
|
||
lang_new_phdr (name, type, filehdr, phdrs, at, flags)
|
||
const char *name;
|
||
etree_type *type;
|
||
boolean filehdr;
|
||
boolean phdrs;
|
||
etree_type *at;
|
||
etree_type *flags;
|
||
{
|
||
struct lang_phdr *n, **pp;
|
||
|
||
n = (struct lang_phdr *) stat_alloc (sizeof (struct lang_phdr));
|
||
n->next = NULL;
|
||
n->name = name;
|
||
n->type = exp_get_value_int (type, 0, "program header type",
|
||
lang_final_phase_enum);
|
||
n->filehdr = filehdr;
|
||
n->phdrs = phdrs;
|
||
n->at = at;
|
||
n->flags = flags;
|
||
|
||
for (pp = &lang_phdr_list; *pp != NULL; pp = &(*pp)->next)
|
||
;
|
||
*pp = n;
|
||
}
|
||
|
||
/* Record the program header information in the output BFD. FIXME: We
|
||
should not be calling an ELF specific function here. */
|
||
|
||
static void
|
||
lang_record_phdrs ()
|
||
{
|
||
unsigned int alc;
|
||
asection **secs;
|
||
struct lang_output_section_phdr_list *last;
|
||
struct lang_phdr *l;
|
||
lang_statement_union_type *u;
|
||
|
||
alc = 10;
|
||
secs = (asection **) xmalloc (alc * sizeof (asection *));
|
||
last = NULL;
|
||
for (l = lang_phdr_list; l != NULL; l = l->next)
|
||
{
|
||
unsigned int c;
|
||
flagword flags;
|
||
bfd_vma at;
|
||
|
||
c = 0;
|
||
for (u = lang_output_section_statement.head;
|
||
u != NULL;
|
||
u = u->output_section_statement.next)
|
||
{
|
||
lang_output_section_statement_type *os;
|
||
struct lang_output_section_phdr_list *pl;
|
||
|
||
os = &u->output_section_statement;
|
||
|
||
pl = os->phdrs;
|
||
if (pl != NULL)
|
||
last = pl;
|
||
else
|
||
{
|
||
if (os->sectype == noload_section
|
||
|| os->bfd_section == NULL
|
||
|| (os->bfd_section->flags & SEC_ALLOC) == 0)
|
||
continue;
|
||
pl = last;
|
||
}
|
||
|
||
if (os->bfd_section == NULL)
|
||
continue;
|
||
|
||
for (; pl != NULL; pl = pl->next)
|
||
{
|
||
if (strcmp (pl->name, l->name) == 0)
|
||
{
|
||
if (c >= alc)
|
||
{
|
||
alc *= 2;
|
||
secs = ((asection **)
|
||
xrealloc (secs, alc * sizeof (asection *)));
|
||
}
|
||
secs[c] = os->bfd_section;
|
||
++c;
|
||
pl->used = true;
|
||
}
|
||
}
|
||
}
|
||
|
||
if (l->flags == NULL)
|
||
flags = 0;
|
||
else
|
||
flags = exp_get_vma (l->flags, 0, "phdr flags",
|
||
lang_final_phase_enum);
|
||
|
||
if (l->at == NULL)
|
||
at = 0;
|
||
else
|
||
at = exp_get_vma (l->at, 0, "phdr load address",
|
||
lang_final_phase_enum);
|
||
|
||
if (! bfd_record_phdr (output_bfd, l->type,
|
||
l->flags != NULL, flags, l->at != NULL,
|
||
at, l->filehdr, l->phdrs, c, secs))
|
||
einfo (_("%F%P: bfd_record_phdr failed: %E\n"));
|
||
}
|
||
|
||
free (secs);
|
||
|
||
/* Make sure all the phdr assignments succeeded. */
|
||
for (u = lang_output_section_statement.head;
|
||
u != NULL;
|
||
u = u->output_section_statement.next)
|
||
{
|
||
struct lang_output_section_phdr_list *pl;
|
||
|
||
if (u->output_section_statement.bfd_section == NULL)
|
||
continue;
|
||
|
||
for (pl = u->output_section_statement.phdrs;
|
||
pl != NULL;
|
||
pl = pl->next)
|
||
if (! pl->used && strcmp (pl->name, "NONE") != 0)
|
||
einfo (_("%X%P: section `%s' assigned to non-existent phdr `%s'\n"),
|
||
u->output_section_statement.name, pl->name);
|
||
}
|
||
}
|
||
|
||
/* Record a list of sections which may not be cross referenced. */
|
||
|
||
void
|
||
lang_add_nocrossref (l)
|
||
struct lang_nocrossref *l;
|
||
{
|
||
struct lang_nocrossrefs *n;
|
||
|
||
n = (struct lang_nocrossrefs *) xmalloc (sizeof *n);
|
||
n->next = nocrossref_list;
|
||
n->list = l;
|
||
nocrossref_list = n;
|
||
|
||
/* Set notice_all so that we get informed about all symbols. */
|
||
link_info.notice_all = true;
|
||
}
|
||
|
||
/* Overlay handling. We handle overlays with some static variables. */
|
||
|
||
/* The overlay virtual address. */
|
||
static etree_type *overlay_vma;
|
||
|
||
/* The overlay load address. */
|
||
static etree_type *overlay_lma;
|
||
|
||
/* Whether nocrossrefs is set for this overlay. */
|
||
static int overlay_nocrossrefs;
|
||
|
||
/* An expression for the maximum section size seen so far. */
|
||
static etree_type *overlay_max;
|
||
|
||
/* A list of all the sections in this overlay. */
|
||
|
||
struct overlay_list {
|
||
struct overlay_list *next;
|
||
lang_output_section_statement_type *os;
|
||
};
|
||
|
||
static struct overlay_list *overlay_list;
|
||
|
||
/* Start handling an overlay. */
|
||
|
||
void
|
||
lang_enter_overlay (vma_expr, lma_expr, nocrossrefs)
|
||
etree_type *vma_expr;
|
||
etree_type *lma_expr;
|
||
int nocrossrefs;
|
||
{
|
||
/* The grammar should prevent nested overlays from occurring. */
|
||
ASSERT (overlay_vma == NULL
|
||
&& overlay_lma == NULL
|
||
&& overlay_list == NULL
|
||
&& overlay_max == NULL);
|
||
|
||
overlay_vma = vma_expr;
|
||
overlay_lma = lma_expr;
|
||
overlay_nocrossrefs = nocrossrefs;
|
||
}
|
||
|
||
/* Start a section in an overlay. We handle this by calling
|
||
lang_enter_output_section_statement with the correct VMA and LMA. */
|
||
|
||
void
|
||
lang_enter_overlay_section (name)
|
||
const char *name;
|
||
{
|
||
struct overlay_list *n;
|
||
etree_type *size;
|
||
|
||
lang_enter_output_section_statement (name, overlay_vma, normal_section,
|
||
0, 0, 0, overlay_lma);
|
||
|
||
/* If this is the first section, then base the VMA and LMA of future
|
||
sections on this one. This will work correctly even if `.' is
|
||
used in the addresses. */
|
||
if (overlay_list == NULL)
|
||
{
|
||
overlay_vma = exp_nameop (ADDR, name);
|
||
overlay_lma = exp_nameop (LOADADDR, name);
|
||
}
|
||
|
||
/* Remember the section. */
|
||
n = (struct overlay_list *) xmalloc (sizeof *n);
|
||
n->os = current_section;
|
||
n->next = overlay_list;
|
||
overlay_list = n;
|
||
|
||
size = exp_nameop (SIZEOF, name);
|
||
|
||
/* Adjust the LMA for the next section. */
|
||
overlay_lma = exp_binop ('+', overlay_lma, size);
|
||
|
||
/* Arrange to work out the maximum section end address. */
|
||
if (overlay_max == NULL)
|
||
overlay_max = size;
|
||
else
|
||
overlay_max = exp_binop (MAX_K, overlay_max, size);
|
||
}
|
||
|
||
/* Finish a section in an overlay. There isn't any special to do
|
||
here. */
|
||
|
||
void
|
||
lang_leave_overlay_section (fill, phdrs)
|
||
bfd_vma fill;
|
||
struct lang_output_section_phdr_list *phdrs;
|
||
{
|
||
const char *name;
|
||
char *clean, *s2;
|
||
const char *s1;
|
||
char *buf;
|
||
|
||
name = current_section->name;
|
||
|
||
lang_leave_output_section_statement (fill, "*default*",
|
||
phdrs, "*default*");
|
||
|
||
/* Define the magic symbols. */
|
||
|
||
clean = xmalloc (strlen (name) + 1);
|
||
s2 = clean;
|
||
for (s1 = name; *s1 != '\0'; s1++)
|
||
if (isalnum ((unsigned char) *s1) || *s1 == '_')
|
||
*s2++ = *s1;
|
||
*s2 = '\0';
|
||
|
||
buf = xmalloc (strlen (clean) + sizeof "__load_start_");
|
||
sprintf (buf, "__load_start_%s", clean);
|
||
lang_add_assignment (exp_assop ('=', buf,
|
||
exp_nameop (LOADADDR, name)));
|
||
|
||
buf = xmalloc (strlen (clean) + sizeof "__load_stop_");
|
||
sprintf (buf, "__load_stop_%s", clean);
|
||
lang_add_assignment (exp_assop ('=', buf,
|
||
exp_binop ('+',
|
||
exp_nameop (LOADADDR, name),
|
||
exp_nameop (SIZEOF, name))));
|
||
|
||
free (clean);
|
||
}
|
||
|
||
/* Finish an overlay. If there are any overlay wide settings, this
|
||
looks through all the sections in the overlay and sets them. */
|
||
|
||
void
|
||
lang_leave_overlay (fill, memspec, phdrs, lma_memspec)
|
||
bfd_vma fill;
|
||
const char *memspec;
|
||
struct lang_output_section_phdr_list *phdrs;
|
||
const char *lma_memspec;
|
||
{
|
||
lang_memory_region_type *region;
|
||
lang_memory_region_type *lma_region;
|
||
struct overlay_list *l;
|
||
struct lang_nocrossref *nocrossref;
|
||
|
||
if (memspec == NULL)
|
||
region = NULL;
|
||
else
|
||
region = lang_memory_region_lookup (memspec);
|
||
|
||
if (lma_memspec == NULL)
|
||
lma_region = NULL;
|
||
else
|
||
lma_region = lang_memory_region_lookup (lma_memspec);
|
||
|
||
nocrossref = NULL;
|
||
|
||
l = overlay_list;
|
||
while (l != NULL)
|
||
{
|
||
struct overlay_list *next;
|
||
|
||
if (fill != 0 && l->os->fill == 0)
|
||
l->os->fill = fill;
|
||
if (region != NULL && l->os->region == NULL)
|
||
l->os->region = region;
|
||
/* We only set lma_region for the first overlay section, as
|
||
subsequent overlay sections will have load_base set relative
|
||
to the first section. Also, don't set lma_region if
|
||
load_base is specified. FIXME: There should really be a test
|
||
that `AT ( LDADDR )' doesn't conflict with `AT >LMA_REGION'
|
||
rather than letting LDADDR simply override LMA_REGION. */
|
||
if (lma_region != NULL && l->os->lma_region == NULL
|
||
&& l->next == NULL && l->os->load_base == NULL)
|
||
l->os->lma_region = lma_region;
|
||
if (phdrs != NULL && l->os->phdrs == NULL)
|
||
l->os->phdrs = phdrs;
|
||
|
||
if (overlay_nocrossrefs)
|
||
{
|
||
struct lang_nocrossref *nc;
|
||
|
||
nc = (struct lang_nocrossref *) xmalloc (sizeof *nc);
|
||
nc->name = l->os->name;
|
||
nc->next = nocrossref;
|
||
nocrossref = nc;
|
||
}
|
||
|
||
next = l->next;
|
||
free (l);
|
||
l = next;
|
||
}
|
||
|
||
if (nocrossref != NULL)
|
||
lang_add_nocrossref (nocrossref);
|
||
|
||
/* Update . for the end of the overlay. */
|
||
lang_add_assignment (exp_assop ('=', ".",
|
||
exp_binop ('+', overlay_vma, overlay_max)));
|
||
|
||
overlay_vma = NULL;
|
||
overlay_lma = NULL;
|
||
overlay_nocrossrefs = 0;
|
||
overlay_list = NULL;
|
||
overlay_max = NULL;
|
||
}
|
||
|
||
/* Version handling. This is only useful for ELF. */
|
||
|
||
/* This global variable holds the version tree that we build. */
|
||
|
||
struct bfd_elf_version_tree *lang_elf_version_info;
|
||
|
||
static int
|
||
lang_vers_match_lang_c (expr, sym)
|
||
struct bfd_elf_version_expr *expr;
|
||
const char *sym;
|
||
{
|
||
if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
|
||
return 1;
|
||
return fnmatch (expr->pattern, sym, 0) == 0;
|
||
}
|
||
|
||
static int
|
||
lang_vers_match_lang_cplusplus (expr, sym)
|
||
struct bfd_elf_version_expr *expr;
|
||
const char *sym;
|
||
{
|
||
char *alt_sym;
|
||
int result;
|
||
|
||
if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
|
||
return 1;
|
||
|
||
alt_sym = cplus_demangle (sym, /* DMGL_NO_TPARAMS */ 0);
|
||
if (!alt_sym)
|
||
{
|
||
/* cplus_demangle (also) returns NULL when it is not a C++ symbol.
|
||
Should we early out false in this case? */
|
||
result = fnmatch (expr->pattern, sym, 0) == 0;
|
||
}
|
||
else
|
||
{
|
||
result = fnmatch (expr->pattern, alt_sym, 0) == 0;
|
||
free (alt_sym);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
static int
|
||
lang_vers_match_lang_java (expr, sym)
|
||
struct bfd_elf_version_expr *expr;
|
||
const char *sym;
|
||
{
|
||
char *alt_sym;
|
||
int result;
|
||
|
||
if (expr->pattern[0] == '*' && expr->pattern[1] == '\0')
|
||
return 1;
|
||
|
||
alt_sym = cplus_demangle (sym, DMGL_JAVA);
|
||
if (!alt_sym)
|
||
{
|
||
/* cplus_demangle (also) returns NULL when it is not a Java symbol.
|
||
Should we early out false in this case? */
|
||
result = fnmatch (expr->pattern, sym, 0) == 0;
|
||
}
|
||
else
|
||
{
|
||
result = fnmatch (expr->pattern, alt_sym, 0) == 0;
|
||
free (alt_sym);
|
||
}
|
||
|
||
return result;
|
||
}
|
||
|
||
/* This is called for each variable name or match expression. */
|
||
|
||
struct bfd_elf_version_expr *
|
||
lang_new_vers_regex (orig, new, lang)
|
||
struct bfd_elf_version_expr *orig;
|
||
const char *new;
|
||
const char *lang;
|
||
{
|
||
struct bfd_elf_version_expr *ret;
|
||
|
||
ret = (struct bfd_elf_version_expr *) xmalloc (sizeof *ret);
|
||
ret->next = orig;
|
||
ret->pattern = new;
|
||
|
||
if (lang == NULL || strcasecmp (lang, "C") == 0)
|
||
ret->match = lang_vers_match_lang_c;
|
||
else if (strcasecmp (lang, "C++") == 0)
|
||
ret->match = lang_vers_match_lang_cplusplus;
|
||
else if (strcasecmp (lang, "Java") == 0)
|
||
ret->match = lang_vers_match_lang_java;
|
||
else
|
||
{
|
||
einfo (_("%X%P: unknown language `%s' in version information\n"),
|
||
lang);
|
||
ret->match = lang_vers_match_lang_c;
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* This is called for each set of variable names and match
|
||
expressions. */
|
||
|
||
struct bfd_elf_version_tree *
|
||
lang_new_vers_node (globals, locals)
|
||
struct bfd_elf_version_expr *globals;
|
||
struct bfd_elf_version_expr *locals;
|
||
{
|
||
struct bfd_elf_version_tree *ret;
|
||
|
||
ret = (struct bfd_elf_version_tree *) xmalloc (sizeof *ret);
|
||
ret->next = NULL;
|
||
ret->name = NULL;
|
||
ret->vernum = 0;
|
||
ret->globals = globals;
|
||
ret->locals = locals;
|
||
ret->deps = NULL;
|
||
ret->name_indx = (unsigned int) -1;
|
||
ret->used = 0;
|
||
return ret;
|
||
}
|
||
|
||
/* This static variable keeps track of version indices. */
|
||
|
||
static int version_index;
|
||
|
||
/* This is called when we know the name and dependencies of the
|
||
version. */
|
||
|
||
void
|
||
lang_register_vers_node (name, version, deps)
|
||
const char *name;
|
||
struct bfd_elf_version_tree *version;
|
||
struct bfd_elf_version_deps *deps;
|
||
{
|
||
struct bfd_elf_version_tree *t, **pp;
|
||
struct bfd_elf_version_expr *e1;
|
||
|
||
/* Make sure this node has a unique name. */
|
||
for (t = lang_elf_version_info; t != NULL; t = t->next)
|
||
if (strcmp (t->name, name) == 0)
|
||
einfo (_("%X%P: duplicate version tag `%s'\n"), name);
|
||
|
||
/* Check the global and local match names, and make sure there
|
||
aren't any duplicates. */
|
||
|
||
for (e1 = version->globals; e1 != NULL; e1 = e1->next)
|
||
{
|
||
for (t = lang_elf_version_info; t != NULL; t = t->next)
|
||
{
|
||
struct bfd_elf_version_expr *e2;
|
||
|
||
for (e2 = t->locals; e2 != NULL; e2 = e2->next)
|
||
if (strcmp (e1->pattern, e2->pattern) == 0)
|
||
einfo (_("%X%P: duplicate expression `%s' in version information\n"),
|
||
e1->pattern);
|
||
}
|
||
}
|
||
|
||
for (e1 = version->locals; e1 != NULL; e1 = e1->next)
|
||
{
|
||
for (t = lang_elf_version_info; t != NULL; t = t->next)
|
||
{
|
||
struct bfd_elf_version_expr *e2;
|
||
|
||
for (e2 = t->globals; e2 != NULL; e2 = e2->next)
|
||
if (strcmp (e1->pattern, e2->pattern) == 0)
|
||
einfo (_("%X%P: duplicate expression `%s' in version information\n"),
|
||
e1->pattern);
|
||
}
|
||
}
|
||
|
||
version->deps = deps;
|
||
version->name = name;
|
||
++version_index;
|
||
version->vernum = version_index;
|
||
|
||
for (pp = &lang_elf_version_info; *pp != NULL; pp = &(*pp)->next)
|
||
;
|
||
*pp = version;
|
||
}
|
||
|
||
/* This is called when we see a version dependency. */
|
||
|
||
struct bfd_elf_version_deps *
|
||
lang_add_vers_depend (list, name)
|
||
struct bfd_elf_version_deps *list;
|
||
const char *name;
|
||
{
|
||
struct bfd_elf_version_deps *ret;
|
||
struct bfd_elf_version_tree *t;
|
||
|
||
ret = (struct bfd_elf_version_deps *) xmalloc (sizeof *ret);
|
||
ret->next = list;
|
||
|
||
for (t = lang_elf_version_info; t != NULL; t = t->next)
|
||
{
|
||
if (strcmp (t->name, name) == 0)
|
||
{
|
||
ret->version_needed = t;
|
||
return ret;
|
||
}
|
||
}
|
||
|
||
einfo (_("%X%P: unable to find version dependency `%s'\n"), name);
|
||
|
||
return ret;
|
||
}
|
||
|
||
static void
|
||
lang_do_version_exports_section ()
|
||
{
|
||
struct bfd_elf_version_expr *greg = NULL, *lreg;
|
||
|
||
LANG_FOR_EACH_INPUT_STATEMENT (is)
|
||
{
|
||
asection *sec = bfd_get_section_by_name (is->the_bfd, ".exports");
|
||
char *contents, *p;
|
||
bfd_size_type len;
|
||
|
||
if (sec == NULL)
|
||
continue;
|
||
|
||
len = bfd_section_size (is->the_bfd, sec);
|
||
contents = xmalloc (len);
|
||
if (!bfd_get_section_contents (is->the_bfd, sec, contents, 0, len))
|
||
einfo (_("%X%P: unable to read .exports section contents"), sec);
|
||
|
||
p = contents;
|
||
while (p < contents + len)
|
||
{
|
||
greg = lang_new_vers_regex (greg, p, NULL);
|
||
p = strchr (p, '\0') + 1;
|
||
}
|
||
|
||
/* Do not free the contents, as we used them creating the regex. */
|
||
|
||
/* Do not include this section in the link. */
|
||
bfd_set_section_flags (is->the_bfd, sec,
|
||
bfd_get_section_flags (is->the_bfd, sec) | SEC_EXCLUDE);
|
||
}
|
||
|
||
lreg = lang_new_vers_regex (NULL, "*", NULL);
|
||
lang_register_vers_node (command_line.version_exports_section,
|
||
lang_new_vers_node (greg, lreg), NULL);
|
||
}
|
||
|
||
void
|
||
lang_add_unique (name)
|
||
const char *name;
|
||
{
|
||
struct unique_sections *ent;
|
||
|
||
for (ent = unique_section_list; ent; ent = ent->next)
|
||
if (strcmp (ent->name, name) == 0)
|
||
return;
|
||
|
||
ent = (struct unique_sections *) xmalloc (sizeof *ent);
|
||
ent->name = xstrdup (name);
|
||
ent->next = unique_section_list;
|
||
unique_section_list = ent;
|
||
}
|