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- /* ldwrite.c -- write out the linked file
- Copyright (C) 1993 Free Software Foundation, Inc.
- Written by Steve Chamberlain sac@cygnus.com
-
- This file is part of GLD, the Gnu Linker.
-
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- #include "bfd.h"
- #include "sysdep.h"
- #include "bfdlink.h"
-
- #include "ld.h"
- #include "ldexp.h"
- #include "ldlang.h"
- #include "ldwrite.h"
- #include "ldmisc.h"
- #include "ldgram.h"
- #include "ldmain.h"
-
- static void build_link_order PARAMS ((lang_statement_union_type *));
- static void print_symbol_table PARAMS ((void));
- static void print_file_stuff PARAMS ((lang_input_statement_type *));
- static boolean print_symbol PARAMS ((struct bfd_link_hash_entry *, PTR));
-
- /* Build link_order structures for the BFD linker. */
-
- static void
- build_link_order (statement)
- lang_statement_union_type *statement;
- {
- switch (statement->header.type)
- {
- case lang_data_statement_enum:
- {
- asection *output_section;
- struct bfd_link_order *link_order;
- bfd_vma value;
-
- output_section = statement->data_statement.output_section;
- ASSERT (output_section->owner == output_bfd);
-
- link_order = bfd_new_link_order (output_bfd, output_section);
- if (link_order == NULL)
- einfo ("%P%F: bfd_new_link_order failed");
-
- link_order->type = bfd_data_link_order;
- link_order->offset = statement->data_statement.output_vma;
- link_order->u.data.contents = (bfd_byte *) xmalloc (QUAD_SIZE);
-
- value = statement->data_statement.value;
-
- ASSERT (output_section->owner == output_bfd);
- switch (statement->data_statement.type)
- {
- case QUAD:
- bfd_put_64 (output_bfd, value, link_order->u.data.contents);
- link_order->size = QUAD_SIZE;
- break;
- case LONG:
- bfd_put_32 (output_bfd, value, link_order->u.data.contents);
- link_order->size = LONG_SIZE;
- break;
- case SHORT:
- bfd_put_16 (output_bfd, value, link_order->u.data.contents);
- link_order->size = SHORT_SIZE;
- break;
- case BYTE:
- bfd_put_8 (output_bfd, value, link_order->u.data.contents);
- link_order->size = BYTE_SIZE;
- break;
- default:
- abort ();
- }
- }
- break;
-
- case lang_reloc_statement_enum:
- {
- lang_reloc_statement_type *rs;
- asection *output_section;
- struct bfd_link_order *link_order;
-
- rs = &statement->reloc_statement;
-
- output_section = rs->output_section;
- ASSERT (output_section->owner == output_bfd);
-
- link_order = bfd_new_link_order (output_bfd, output_section);
- if (link_order == NULL)
- einfo ("%P%F: bfd_new_link_order failed");
-
- link_order->offset = rs->output_vma;
- link_order->size = bfd_get_reloc_size (rs->howto);
-
- link_order->u.reloc.p =
- ((struct bfd_link_order_reloc *)
- xmalloc (sizeof (struct bfd_link_order_reloc)));
-
- link_order->u.reloc.p->reloc = rs->reloc;
- link_order->u.reloc.p->addend = rs->addend_value;
-
- if (rs->section != (asection *) NULL)
- {
- ASSERT (rs->name == (const char *) NULL);
- link_order->type = bfd_section_reloc_link_order;
- if (rs->section->owner == output_bfd)
- link_order->u.reloc.p->u.section = rs->section;
- else
- {
- link_order->u.reloc.p->u.section = rs->section->output_section;
- link_order->u.reloc.p->addend += rs->section->output_offset;
- }
- }
- else
- {
- ASSERT (rs->name != (const char *) NULL);
- link_order->type = bfd_symbol_reloc_link_order;
- link_order->u.reloc.p->u.name = rs->name;
- }
- }
- break;
-
- case lang_input_section_enum:
- /* Create a new link_order in the output section with this
- attached */
- if (statement->input_section.ifile->just_syms_flag == false)
- {
- asection *i = statement->input_section.section;
- asection *output_section = i->output_section;
-
- ASSERT (output_section->owner == output_bfd);
-
- if ((output_section->flags & SEC_HAS_CONTENTS) != 0)
- {
- struct bfd_link_order *link_order;
-
- link_order = bfd_new_link_order (output_bfd, output_section);
-
- if (i->flags & SEC_NEVER_LOAD)
- {
- /* We've got a never load section inside one which
- is going to be output, we'll change it into a
- fill link_order */
- link_order->type = bfd_fill_link_order;
- link_order->u.fill.value = 0;
- }
- else
- {
- link_order->type = bfd_indirect_link_order;
- link_order->u.indirect.section = i;
- ASSERT (i->output_section == output_section);
- }
- if (i->_cooked_size)
- link_order->size = i->_cooked_size;
- else
- link_order->size = bfd_get_section_size_before_reloc (i);
- link_order->offset = i->output_offset;
- }
- }
- break;
-
- case lang_padding_statement_enum:
- /* Make a new link_order with the right filler */
- {
- asection *output_section;
- struct bfd_link_order *link_order;
-
- output_section = statement->padding_statement.output_section;
- ASSERT (statement->padding_statement.output_section->owner
- == output_bfd);
- if ((output_section->flags & SEC_HAS_CONTENTS) != 0)
- {
- link_order = bfd_new_link_order (output_bfd, output_section);
- link_order->type = bfd_fill_link_order;
- link_order->size = statement->padding_statement.size;
- link_order->offset = statement->padding_statement.output_offset;
- link_order->u.fill.value = statement->padding_statement.fill;
- }
- }
- break;
-
- default:
- /* All the other ones fall through */
- break;
- }
- }
-
- /* Call BFD to write out the linked file. */
-
- void
- ldwrite ()
- {
- lang_for_each_statement (build_link_order);
-
- if (! bfd_final_link (output_bfd, &link_info))
- einfo ("%F%P: final link failed: %E\n", output_bfd);
-
- if (config.map_file)
- {
- print_symbol_table ();
- lang_map ();
- }
- }
-
- /* Print the symbol table. */
-
- static void
- print_symbol_table ()
- {
- fprintf (config.map_file, "**FILES**\n\n");
- lang_for_each_file (print_file_stuff);
-
- fprintf (config.map_file, "**GLOBAL SYMBOLS**\n\n");
- fprintf (config.map_file, "offset section offset symbol\n");
- bfd_link_hash_traverse (link_info.hash, print_symbol, (PTR) NULL);
- }
-
- /* Print information about a file. */
-
- static void
- print_file_stuff (f)
- lang_input_statement_type * f;
- {
- fprintf (config.map_file, " %s\n", f->filename);
- if (f->just_syms_flag)
- {
- fprintf (config.map_file, " symbols only\n");
- }
- else
- {
- asection *s;
- if (true)
- {
- for (s = f->the_bfd->sections;
- s != (asection *) NULL;
- s = s->next)
- {
- print_address (s->output_offset);
- if (s->reloc_done)
- {
- fprintf (config.map_file, " %08x 2**%2ud %s\n",
- (unsigned) bfd_get_section_size_after_reloc (s),
- s->alignment_power, s->name);
- }
-
- else
- {
- fprintf (config.map_file, " %08x 2**%2ud %s\n",
- (unsigned) bfd_get_section_size_before_reloc (s),
- s->alignment_power, s->name);
- }
- }
- }
- else
- {
- for (s = f->the_bfd->sections;
- s != (asection *) NULL;
- s = s->next)
- {
- fprintf (config.map_file, "%s ", s->name);
- print_address (s->output_offset);
- fprintf (config.map_file, "(%x)",
- (unsigned) bfd_get_section_size_after_reloc (s));
- }
- fprintf (config.map_file, "hex \n");
- }
- }
- print_nl ();
- }
-
- /* Print a symbol. */
-
- /*ARGSUSED*/
- static boolean
- print_symbol (p, ignore)
- struct bfd_link_hash_entry *p;
- PTR ignore;
- {
- while (p->type == bfd_link_hash_indirect
- || p->type == bfd_link_hash_warning)
- p = p->u.i.link;
-
- switch (p->type)
- {
- case bfd_link_hash_new:
- abort ();
-
- case bfd_link_hash_undefined:
- fprintf (config.map_file, "undefined ");
- fprintf (config.map_file, "%s ", p->root.string);
- print_nl ();
- break;
-
- case bfd_link_hash_weak:
- fprintf (config.map_file, "weak ");
- fprintf (config.map_file, "%s ", p->root.string);
- print_nl ();
- break;
-
- case bfd_link_hash_defined:
- {
- asection *defsec = p->u.def.section;
-
- print_address (p->u.def.value);
- if (defsec)
- {
- fprintf (config.map_file, " %-10s",
- bfd_section_name (output_bfd, defsec));
- print_space ();
- print_address (p->u.def.value + defsec->vma);
- }
- else
- {
- fprintf (config.map_file, " .......");
- }
- fprintf (config.map_file, " %s ", p->root.string);
- }
- print_nl ();
- break;
-
- case bfd_link_hash_common:
- fprintf (config.map_file, "common ");
- print_address (p->u.c.size);
- fprintf (config.map_file, " %s ", p->root.string);
- print_nl ();
- break;
-
- default:
- abort ();
- }
-
- return true;
- }
-