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1181 |
sfurman |
/* ELF linking support for BFD.
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Copyright 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
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Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program 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 of the License, or
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(at your option) any later version.
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This program 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 this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "libbfd.h"
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#define ARCH_SIZE 0
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#include "elf-bfd.h"
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boolean
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_bfd_elf_create_got_section (abfd, info)
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bfd *abfd;
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struct bfd_link_info *info;
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{
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flagword flags;
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register asection *s;
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struct elf_link_hash_entry *h;
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struct elf_backend_data *bed = get_elf_backend_data (abfd);
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int ptralign;
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/* This function may be called more than once. */
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if (bfd_get_section_by_name (abfd, ".got") != NULL)
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return true;
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switch (bed->s->arch_size)
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{
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case 32:
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ptralign = 2;
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break;
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case 64:
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ptralign = 3;
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break;
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default:
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bfd_set_error (bfd_error_bad_value);
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return false;
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}
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flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
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| SEC_LINKER_CREATED);
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s = bfd_make_section (abfd, ".got");
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if (s == NULL
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|| !bfd_set_section_flags (abfd, s, flags)
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|| !bfd_set_section_alignment (abfd, s, ptralign))
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return false;
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if (bed->want_got_plt)
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{
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s = bfd_make_section (abfd, ".got.plt");
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if (s == NULL
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|| !bfd_set_section_flags (abfd, s, flags)
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|| !bfd_set_section_alignment (abfd, s, ptralign))
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return false;
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}
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if (bed->want_got_sym)
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{
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/* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
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(or .got.plt) section. We don't do this in the linker script
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because we don't want to define the symbol if we are not creating
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a global offset table. */
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h = NULL;
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if (!(_bfd_generic_link_add_one_symbol
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(info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s,
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bed->got_symbol_offset, (const char *) NULL, false,
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bed->collect, (struct bfd_link_hash_entry **) &h)))
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return false;
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h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
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h->type = STT_OBJECT;
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if (info->shared
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&& ! _bfd_elf_link_record_dynamic_symbol (info, h))
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return false;
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elf_hash_table (info)->hgot = h;
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}
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/* The first bit of the global offset table is the header. */
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s->_raw_size += bed->got_header_size + bed->got_symbol_offset;
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return true;
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}
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/* Create dynamic sections when linking against a dynamic object. */
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boolean
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_bfd_elf_create_dynamic_sections (abfd, info)
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bfd *abfd;
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struct bfd_link_info *info;
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{
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flagword flags, pltflags;
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register asection *s;
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struct elf_backend_data *bed = get_elf_backend_data (abfd);
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int ptralign;
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switch (bed->s->arch_size)
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{
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case 32:
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ptralign = 2;
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break;
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case 64:
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ptralign = 3;
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break;
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default:
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bfd_set_error (bfd_error_bad_value);
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return false;
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}
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/* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and
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.rel[a].bss sections. */
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flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY
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| SEC_LINKER_CREATED);
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pltflags = flags;
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pltflags |= SEC_CODE;
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if (bed->plt_not_loaded)
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pltflags &= ~ (SEC_CODE | SEC_LOAD | SEC_HAS_CONTENTS);
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if (bed->plt_readonly)
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pltflags |= SEC_READONLY;
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s = bfd_make_section (abfd, ".plt");
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if (s == NULL
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|| ! bfd_set_section_flags (abfd, s, pltflags)
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|| ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
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return false;
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if (bed->want_plt_sym)
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{
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/* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the
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.plt section. */
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struct elf_link_hash_entry *h = NULL;
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if (! (_bfd_generic_link_add_one_symbol
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(info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s,
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(bfd_vma) 0, (const char *) NULL, false,
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get_elf_backend_data (abfd)->collect,
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(struct bfd_link_hash_entry **) &h)))
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return false;
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h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR;
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h->type = STT_OBJECT;
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if (info->shared
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&& ! _bfd_elf_link_record_dynamic_symbol (info, h))
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return false;
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}
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s = bfd_make_section (abfd,
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bed->default_use_rela_p ? ".rela.plt" : ".rel.plt");
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if (s == NULL
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|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
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|| ! bfd_set_section_alignment (abfd, s, ptralign))
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return false;
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if (! _bfd_elf_create_got_section (abfd, info))
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return false;
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179 |
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if (bed->want_dynbss)
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{
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/* The .dynbss section is a place to put symbols which are defined
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by dynamic objects, are referenced by regular objects, and are
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not functions. We must allocate space for them in the process
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image and use a R_*_COPY reloc to tell the dynamic linker to
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initialize them at run time. The linker script puts the .dynbss
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section into the .bss section of the final image. */
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s = bfd_make_section (abfd, ".dynbss");
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if (s == NULL
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|| ! bfd_set_section_flags (abfd, s, SEC_ALLOC))
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return false;
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/* The .rel[a].bss section holds copy relocs. This section is not
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normally needed. We need to create it here, though, so that the
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linker will map it to an output section. We can't just create it
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only if we need it, because we will not know whether we need it
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until we have seen all the input files, and the first time the
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main linker code calls BFD after examining all the input files
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(size_dynamic_sections) the input sections have already been
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mapped to the output sections. If the section turns out not to
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be needed, we can discard it later. We will never need this
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section when generating a shared object, since they do not use
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copy relocs. */
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if (! info->shared)
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{
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s = bfd_make_section (abfd,
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(bed->default_use_rela_p
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? ".rela.bss" : ".rel.bss"));
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208 |
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if (s == NULL
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209 |
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|| ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY)
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210 |
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|| ! bfd_set_section_alignment (abfd, s, ptralign))
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return false;
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}
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213 |
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}
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214 |
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215 |
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return true;
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}
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217 |
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218 |
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/* Record a new dynamic symbol. We record the dynamic symbols as we
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read the input files, since we need to have a list of all of them
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220 |
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before we can determine the final sizes of the output sections.
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221 |
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Note that we may actually call this function even though we are not
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222 |
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going to output any dynamic symbols; in some cases we know that a
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223 |
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symbol should be in the dynamic symbol table, but only if there is
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224 |
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one. */
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225 |
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boolean
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227 |
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_bfd_elf_link_record_dynamic_symbol (info, h)
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228 |
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struct bfd_link_info *info;
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struct elf_link_hash_entry *h;
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230 |
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{
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231 |
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if (h->dynindx == -1)
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232 |
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{
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233 |
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struct elf_strtab_hash *dynstr;
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char *p, *alc;
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235 |
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const char *name;
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236 |
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boolean copy;
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237 |
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bfd_size_type indx;
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238 |
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|
239 |
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/* XXX: The ABI draft says the linker must turn hidden and
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240 |
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internal symbols into STB_LOCAL symbols when producing the
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241 |
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DSO. However, if ld.so honors st_other in the dynamic table,
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242 |
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this would not be necessary. */
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243 |
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switch (ELF_ST_VISIBILITY (h->other))
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244 |
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{
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245 |
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case STV_INTERNAL:
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246 |
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case STV_HIDDEN:
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247 |
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if (h->root.type != bfd_link_hash_undefined
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248 |
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&& h->root.type != bfd_link_hash_undefweak)
|
249 |
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{
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250 |
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h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
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251 |
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return true;
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252 |
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}
|
253 |
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254 |
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default:
|
255 |
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break;
|
256 |
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}
|
257 |
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|
258 |
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h->dynindx = elf_hash_table (info)->dynsymcount;
|
259 |
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++elf_hash_table (info)->dynsymcount;
|
260 |
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|
261 |
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dynstr = elf_hash_table (info)->dynstr;
|
262 |
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if (dynstr == NULL)
|
263 |
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{
|
264 |
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/* Create a strtab to hold the dynamic symbol names. */
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265 |
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elf_hash_table (info)->dynstr = dynstr = _bfd_elf_strtab_init ();
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266 |
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if (dynstr == NULL)
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267 |
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return false;
|
268 |
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}
|
269 |
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|
270 |
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/* We don't put any version information in the dynamic string
|
271 |
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table. */
|
272 |
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name = h->root.root.string;
|
273 |
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p = strchr (name, ELF_VER_CHR);
|
274 |
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if (p == NULL)
|
275 |
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{
|
276 |
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alc = NULL;
|
277 |
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copy = false;
|
278 |
|
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}
|
279 |
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else
|
280 |
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{
|
281 |
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size_t len = p - name + 1;
|
282 |
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|
283 |
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alc = bfd_malloc ((bfd_size_type) len);
|
284 |
|
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if (alc == NULL)
|
285 |
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return false;
|
286 |
|
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memcpy (alc, name, len - 1);
|
287 |
|
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alc[len - 1] = '\0';
|
288 |
|
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name = alc;
|
289 |
|
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copy = true;
|
290 |
|
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}
|
291 |
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|
292 |
|
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indx = _bfd_elf_strtab_add (dynstr, name, copy);
|
293 |
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|
294 |
|
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if (alc != NULL)
|
295 |
|
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free (alc);
|
296 |
|
|
|
297 |
|
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if (indx == (bfd_size_type) -1)
|
298 |
|
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return false;
|
299 |
|
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h->dynstr_index = indx;
|
300 |
|
|
}
|
301 |
|
|
|
302 |
|
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return true;
|
303 |
|
|
}
|
304 |
|
|
|
305 |
|
|
/* Record a new local dynamic symbol. Returns 0 on failure, 1 on
|
306 |
|
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success, and 2 on a failure caused by attempting to record a symbol
|
307 |
|
|
in a discarded section, eg. a discarded link-once section symbol. */
|
308 |
|
|
|
309 |
|
|
int
|
310 |
|
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elf_link_record_local_dynamic_symbol (info, input_bfd, input_indx)
|
311 |
|
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struct bfd_link_info *info;
|
312 |
|
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bfd *input_bfd;
|
313 |
|
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long input_indx;
|
314 |
|
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{
|
315 |
|
|
bfd_size_type amt;
|
316 |
|
|
struct elf_link_local_dynamic_entry *entry;
|
317 |
|
|
struct elf_link_hash_table *eht;
|
318 |
|
|
struct elf_strtab_hash *dynstr;
|
319 |
|
|
unsigned long dynstr_index;
|
320 |
|
|
char *name;
|
321 |
|
|
Elf_External_Sym_Shndx eshndx;
|
322 |
|
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char esym[sizeof (Elf64_External_Sym)];
|
323 |
|
|
|
324 |
|
|
if (! is_elf_hash_table (info))
|
325 |
|
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return 0;
|
326 |
|
|
|
327 |
|
|
/* See if the entry exists already. */
|
328 |
|
|
for (entry = elf_hash_table (info)->dynlocal; entry ; entry = entry->next)
|
329 |
|
|
if (entry->input_bfd == input_bfd && entry->input_indx == input_indx)
|
330 |
|
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return 1;
|
331 |
|
|
|
332 |
|
|
amt = sizeof (*entry);
|
333 |
|
|
entry = (struct elf_link_local_dynamic_entry *) bfd_alloc (input_bfd, amt);
|
334 |
|
|
if (entry == NULL)
|
335 |
|
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return 0;
|
336 |
|
|
|
337 |
|
|
/* Go find the symbol, so that we can find it's name. */
|
338 |
|
|
if (!bfd_elf_get_elf_syms (input_bfd, &elf_tdata (input_bfd)->symtab_hdr,
|
339 |
|
|
(size_t) 1, (size_t) input_indx,
|
340 |
|
|
&entry->isym, esym, &eshndx))
|
341 |
|
|
{
|
342 |
|
|
bfd_release (input_bfd, entry);
|
343 |
|
|
return 0;
|
344 |
|
|
}
|
345 |
|
|
|
346 |
|
|
if (entry->isym.st_shndx != SHN_UNDEF
|
347 |
|
|
&& (entry->isym.st_shndx < SHN_LORESERVE
|
348 |
|
|
|| entry->isym.st_shndx > SHN_HIRESERVE))
|
349 |
|
|
{
|
350 |
|
|
asection *s;
|
351 |
|
|
|
352 |
|
|
s = bfd_section_from_elf_index (input_bfd, entry->isym.st_shndx);
|
353 |
|
|
if (s == NULL || bfd_is_abs_section (s->output_section))
|
354 |
|
|
{
|
355 |
|
|
/* We can still bfd_release here as nothing has done another
|
356 |
|
|
bfd_alloc. We can't do this later in this function. */
|
357 |
|
|
bfd_release (input_bfd, entry);
|
358 |
|
|
return 2;
|
359 |
|
|
}
|
360 |
|
|
}
|
361 |
|
|
|
362 |
|
|
name = (bfd_elf_string_from_elf_section
|
363 |
|
|
(input_bfd, elf_tdata (input_bfd)->symtab_hdr.sh_link,
|
364 |
|
|
entry->isym.st_name));
|
365 |
|
|
|
366 |
|
|
dynstr = elf_hash_table (info)->dynstr;
|
367 |
|
|
if (dynstr == NULL)
|
368 |
|
|
{
|
369 |
|
|
/* Create a strtab to hold the dynamic symbol names. */
|
370 |
|
|
elf_hash_table (info)->dynstr = dynstr = _bfd_elf_strtab_init ();
|
371 |
|
|
if (dynstr == NULL)
|
372 |
|
|
return 0;
|
373 |
|
|
}
|
374 |
|
|
|
375 |
|
|
dynstr_index = _bfd_elf_strtab_add (dynstr, name, false);
|
376 |
|
|
if (dynstr_index == (unsigned long) -1)
|
377 |
|
|
return 0;
|
378 |
|
|
entry->isym.st_name = dynstr_index;
|
379 |
|
|
|
380 |
|
|
eht = elf_hash_table (info);
|
381 |
|
|
|
382 |
|
|
entry->next = eht->dynlocal;
|
383 |
|
|
eht->dynlocal = entry;
|
384 |
|
|
entry->input_bfd = input_bfd;
|
385 |
|
|
entry->input_indx = input_indx;
|
386 |
|
|
eht->dynsymcount++;
|
387 |
|
|
|
388 |
|
|
/* Whatever binding the symbol had before, it's now local. */
|
389 |
|
|
entry->isym.st_info
|
390 |
|
|
= ELF_ST_INFO (STB_LOCAL, ELF_ST_TYPE (entry->isym.st_info));
|
391 |
|
|
|
392 |
|
|
/* The dynindx will be set at the end of size_dynamic_sections. */
|
393 |
|
|
|
394 |
|
|
return 1;
|
395 |
|
|
}
|
396 |
|
|
|
397 |
|
|
/* Return the dynindex of a local dynamic symbol. */
|
398 |
|
|
|
399 |
|
|
long
|
400 |
|
|
_bfd_elf_link_lookup_local_dynindx (info, input_bfd, input_indx)
|
401 |
|
|
struct bfd_link_info *info;
|
402 |
|
|
bfd *input_bfd;
|
403 |
|
|
long input_indx;
|
404 |
|
|
{
|
405 |
|
|
struct elf_link_local_dynamic_entry *e;
|
406 |
|
|
|
407 |
|
|
for (e = elf_hash_table (info)->dynlocal; e ; e = e->next)
|
408 |
|
|
if (e->input_bfd == input_bfd && e->input_indx == input_indx)
|
409 |
|
|
return e->dynindx;
|
410 |
|
|
return -1;
|
411 |
|
|
}
|
412 |
|
|
|
413 |
|
|
/* This function is used to renumber the dynamic symbols, if some of
|
414 |
|
|
them are removed because they are marked as local. This is called
|
415 |
|
|
via elf_link_hash_traverse. */
|
416 |
|
|
|
417 |
|
|
static boolean elf_link_renumber_hash_table_dynsyms
|
418 |
|
|
PARAMS ((struct elf_link_hash_entry *, PTR));
|
419 |
|
|
|
420 |
|
|
static boolean
|
421 |
|
|
elf_link_renumber_hash_table_dynsyms (h, data)
|
422 |
|
|
struct elf_link_hash_entry *h;
|
423 |
|
|
PTR data;
|
424 |
|
|
{
|
425 |
|
|
size_t *count = (size_t *) data;
|
426 |
|
|
|
427 |
|
|
if (h->root.type == bfd_link_hash_warning)
|
428 |
|
|
h = (struct elf_link_hash_entry *) h->root.u.i.link;
|
429 |
|
|
|
430 |
|
|
if (h->dynindx != -1)
|
431 |
|
|
h->dynindx = ++(*count);
|
432 |
|
|
|
433 |
|
|
return true;
|
434 |
|
|
}
|
435 |
|
|
|
436 |
|
|
/* Assign dynsym indices. In a shared library we generate a section
|
437 |
|
|
symbol for each output section, which come first. Next come all of
|
438 |
|
|
the back-end allocated local dynamic syms, followed by the rest of
|
439 |
|
|
the global symbols. */
|
440 |
|
|
|
441 |
|
|
unsigned long
|
442 |
|
|
_bfd_elf_link_renumber_dynsyms (output_bfd, info)
|
443 |
|
|
bfd *output_bfd;
|
444 |
|
|
struct bfd_link_info *info;
|
445 |
|
|
{
|
446 |
|
|
unsigned long dynsymcount = 0;
|
447 |
|
|
|
448 |
|
|
if (info->shared)
|
449 |
|
|
{
|
450 |
|
|
asection *p;
|
451 |
|
|
for (p = output_bfd->sections; p ; p = p->next)
|
452 |
|
|
if ((p->flags & SEC_EXCLUDE) == 0)
|
453 |
|
|
elf_section_data (p)->dynindx = ++dynsymcount;
|
454 |
|
|
}
|
455 |
|
|
|
456 |
|
|
if (elf_hash_table (info)->dynlocal)
|
457 |
|
|
{
|
458 |
|
|
struct elf_link_local_dynamic_entry *p;
|
459 |
|
|
for (p = elf_hash_table (info)->dynlocal; p ; p = p->next)
|
460 |
|
|
p->dynindx = ++dynsymcount;
|
461 |
|
|
}
|
462 |
|
|
|
463 |
|
|
elf_link_hash_traverse (elf_hash_table (info),
|
464 |
|
|
elf_link_renumber_hash_table_dynsyms,
|
465 |
|
|
&dynsymcount);
|
466 |
|
|
|
467 |
|
|
/* There is an unused NULL entry at the head of the table which
|
468 |
|
|
we must account for in our count. Unless there weren't any
|
469 |
|
|
symbols, which means we'll have no table at all. */
|
470 |
|
|
if (dynsymcount != 0)
|
471 |
|
|
++dynsymcount;
|
472 |
|
|
|
473 |
|
|
return elf_hash_table (info)->dynsymcount = dynsymcount;
|
474 |
|
|
}
|
475 |
|
|
|
476 |
|
|
/* Create a special linker section, or return a pointer to a linker
|
477 |
|
|
section already created */
|
478 |
|
|
|
479 |
|
|
elf_linker_section_t *
|
480 |
|
|
_bfd_elf_create_linker_section (abfd, info, which, defaults)
|
481 |
|
|
bfd *abfd;
|
482 |
|
|
struct bfd_link_info *info;
|
483 |
|
|
enum elf_linker_section_enum which;
|
484 |
|
|
elf_linker_section_t *defaults;
|
485 |
|
|
{
|
486 |
|
|
bfd *dynobj = elf_hash_table (info)->dynobj;
|
487 |
|
|
elf_linker_section_t *lsect;
|
488 |
|
|
|
489 |
|
|
/* Record the first bfd section that needs the special section */
|
490 |
|
|
if (!dynobj)
|
491 |
|
|
dynobj = elf_hash_table (info)->dynobj = abfd;
|
492 |
|
|
|
493 |
|
|
/* If this is the first time, create the section */
|
494 |
|
|
lsect = elf_linker_section (dynobj, which);
|
495 |
|
|
if (!lsect)
|
496 |
|
|
{
|
497 |
|
|
asection *s;
|
498 |
|
|
bfd_size_type amt = sizeof (elf_linker_section_t);
|
499 |
|
|
|
500 |
|
|
lsect = (elf_linker_section_t *) bfd_alloc (dynobj, amt);
|
501 |
|
|
|
502 |
|
|
*lsect = *defaults;
|
503 |
|
|
elf_linker_section (dynobj, which) = lsect;
|
504 |
|
|
lsect->which = which;
|
505 |
|
|
lsect->hole_written_p = false;
|
506 |
|
|
|
507 |
|
|
/* See if the sections already exist */
|
508 |
|
|
lsect->section = s = bfd_get_section_by_name (dynobj, lsect->name);
|
509 |
|
|
if (!s || (s->flags & defaults->flags) != defaults->flags)
|
510 |
|
|
{
|
511 |
|
|
lsect->section = s = bfd_make_section_anyway (dynobj, lsect->name);
|
512 |
|
|
|
513 |
|
|
if (s == NULL)
|
514 |
|
|
return (elf_linker_section_t *)0;
|
515 |
|
|
|
516 |
|
|
bfd_set_section_flags (dynobj, s, defaults->flags);
|
517 |
|
|
bfd_set_section_alignment (dynobj, s, lsect->alignment);
|
518 |
|
|
}
|
519 |
|
|
else if (bfd_get_section_alignment (dynobj, s) < lsect->alignment)
|
520 |
|
|
bfd_set_section_alignment (dynobj, s, lsect->alignment);
|
521 |
|
|
|
522 |
|
|
s->_raw_size = align_power (s->_raw_size, lsect->alignment);
|
523 |
|
|
|
524 |
|
|
/* Is there a hole we have to provide? If so check whether the segment is
|
525 |
|
|
too big already */
|
526 |
|
|
if (lsect->hole_size)
|
527 |
|
|
{
|
528 |
|
|
lsect->hole_offset = s->_raw_size;
|
529 |
|
|
s->_raw_size += lsect->hole_size;
|
530 |
|
|
if (lsect->hole_offset > lsect->max_hole_offset)
|
531 |
|
|
{
|
532 |
|
|
(*_bfd_error_handler) (_("%s: Section %s is too large to add hole of %ld bytes"),
|
533 |
|
|
bfd_get_filename (abfd),
|
534 |
|
|
lsect->name,
|
535 |
|
|
(long) lsect->hole_size);
|
536 |
|
|
|
537 |
|
|
bfd_set_error (bfd_error_bad_value);
|
538 |
|
|
return (elf_linker_section_t *)0;
|
539 |
|
|
}
|
540 |
|
|
}
|
541 |
|
|
|
542 |
|
|
#ifdef DEBUG
|
543 |
|
|
fprintf (stderr, "Creating section %s, current size = %ld\n",
|
544 |
|
|
lsect->name, (long)s->_raw_size);
|
545 |
|
|
#endif
|
546 |
|
|
|
547 |
|
|
if (lsect->sym_name)
|
548 |
|
|
{
|
549 |
|
|
struct elf_link_hash_entry *h = NULL;
|
550 |
|
|
#ifdef DEBUG
|
551 |
|
|
fprintf (stderr, "Adding %s to section %s\n",
|
552 |
|
|
lsect->sym_name,
|
553 |
|
|
lsect->name);
|
554 |
|
|
#endif
|
555 |
|
|
h = (struct elf_link_hash_entry *)
|
556 |
|
|
bfd_link_hash_lookup (info->hash, lsect->sym_name, false, false, false);
|
557 |
|
|
|
558 |
|
|
if ((h == NULL || h->root.type == bfd_link_hash_undefined)
|
559 |
|
|
&& !(_bfd_generic_link_add_one_symbol (info,
|
560 |
|
|
abfd,
|
561 |
|
|
lsect->sym_name,
|
562 |
|
|
BSF_GLOBAL,
|
563 |
|
|
s,
|
564 |
|
|
((lsect->hole_size)
|
565 |
|
|
? s->_raw_size - lsect->hole_size + lsect->sym_offset
|
566 |
|
|
: lsect->sym_offset),
|
567 |
|
|
(const char *) NULL,
|
568 |
|
|
false,
|
569 |
|
|
get_elf_backend_data (abfd)->collect,
|
570 |
|
|
(struct bfd_link_hash_entry **) &h)))
|
571 |
|
|
return (elf_linker_section_t *)0;
|
572 |
|
|
|
573 |
|
|
if ((defaults->which != LINKER_SECTION_SDATA)
|
574 |
|
|
&& (defaults->which != LINKER_SECTION_SDATA2))
|
575 |
|
|
h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_DYNAMIC;
|
576 |
|
|
|
577 |
|
|
h->type = STT_OBJECT;
|
578 |
|
|
lsect->sym_hash = h;
|
579 |
|
|
|
580 |
|
|
if (info->shared
|
581 |
|
|
&& ! _bfd_elf_link_record_dynamic_symbol (info, h))
|
582 |
|
|
return (elf_linker_section_t *)0;
|
583 |
|
|
}
|
584 |
|
|
}
|
585 |
|
|
|
586 |
|
|
#if 0
|
587 |
|
|
/* This does not make sense. The sections which may exist in the
|
588 |
|
|
object file have nothing to do with the sections we want to
|
589 |
|
|
create. */
|
590 |
|
|
|
591 |
|
|
/* Find the related sections if they have been created */
|
592 |
|
|
if (lsect->bss_name && !lsect->bss_section)
|
593 |
|
|
lsect->bss_section = bfd_get_section_by_name (dynobj, lsect->bss_name);
|
594 |
|
|
|
595 |
|
|
if (lsect->rel_name && !lsect->rel_section)
|
596 |
|
|
lsect->rel_section = bfd_get_section_by_name (dynobj, lsect->rel_name);
|
597 |
|
|
#endif
|
598 |
|
|
|
599 |
|
|
return lsect;
|
600 |
|
|
}
|
601 |
|
|
|
602 |
|
|
/* Find a linker generated pointer with a given addend and type. */
|
603 |
|
|
|
604 |
|
|
elf_linker_section_pointers_t *
|
605 |
|
|
_bfd_elf_find_pointer_linker_section (linker_pointers, addend, which)
|
606 |
|
|
elf_linker_section_pointers_t *linker_pointers;
|
607 |
|
|
bfd_vma addend;
|
608 |
|
|
elf_linker_section_enum_t which;
|
609 |
|
|
{
|
610 |
|
|
for ( ; linker_pointers != NULL; linker_pointers = linker_pointers->next)
|
611 |
|
|
{
|
612 |
|
|
if (which == linker_pointers->which && addend == linker_pointers->addend)
|
613 |
|
|
return linker_pointers;
|
614 |
|
|
}
|
615 |
|
|
|
616 |
|
|
return (elf_linker_section_pointers_t *)0;
|
617 |
|
|
}
|
618 |
|
|
|
619 |
|
|
/* Make the .rela section corresponding to the generated linker section. */
|
620 |
|
|
|
621 |
|
|
boolean
|
622 |
|
|
_bfd_elf_make_linker_section_rela (dynobj, lsect, alignment)
|
623 |
|
|
bfd *dynobj;
|
624 |
|
|
elf_linker_section_t *lsect;
|
625 |
|
|
int alignment;
|
626 |
|
|
{
|
627 |
|
|
if (lsect->rel_section)
|
628 |
|
|
return true;
|
629 |
|
|
|
630 |
|
|
lsect->rel_section = bfd_get_section_by_name (dynobj, lsect->rel_name);
|
631 |
|
|
if (lsect->rel_section == NULL)
|
632 |
|
|
{
|
633 |
|
|
lsect->rel_section = bfd_make_section (dynobj, lsect->rel_name);
|
634 |
|
|
if (lsect->rel_section == NULL
|
635 |
|
|
|| ! bfd_set_section_flags (dynobj,
|
636 |
|
|
lsect->rel_section,
|
637 |
|
|
(SEC_ALLOC
|
638 |
|
|
| SEC_LOAD
|
639 |
|
|
| SEC_HAS_CONTENTS
|
640 |
|
|
| SEC_IN_MEMORY
|
641 |
|
|
| SEC_LINKER_CREATED
|
642 |
|
|
| SEC_READONLY))
|
643 |
|
|
|| ! bfd_set_section_alignment (dynobj, lsect->rel_section, alignment))
|
644 |
|
|
return false;
|
645 |
|
|
}
|
646 |
|
|
|
647 |
|
|
return true;
|
648 |
|
|
}
|