summaryrefslogtreecommitdiffstats
path: root/binutils-2.24/bfd/elf-vxworks.c
diff options
context:
space:
mode:
Diffstat (limited to 'binutils-2.24/bfd/elf-vxworks.c')
-rw-r--r--binutils-2.24/bfd/elf-vxworks.c301
1 files changed, 0 insertions, 301 deletions
diff --git a/binutils-2.24/bfd/elf-vxworks.c b/binutils-2.24/bfd/elf-vxworks.c
deleted file mode 100644
index bb9dbbba..00000000
--- a/binutils-2.24/bfd/elf-vxworks.c
+++ /dev/null
@@ -1,301 +0,0 @@
-/* VxWorks support for ELF
- Copyright 2005, 2006, 2007, 2009, 2012 Free Software Foundation, Inc.
-
- This file is part of BFD, the Binary File Descriptor library.
-
- 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 3 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., 59 Temple Place - Suite 330, Boston,
- MA 02111-1307, USA. */
-
-/* This file provides routines used by all VxWorks targets. */
-
-#include "sysdep.h"
-#include "bfd.h"
-#include "libbfd.h"
-#include "elf-bfd.h"
-#include "elf-vxworks.h"
-#include "elf/vxworks.h"
-
-/* Return true if symbol NAME, as defined by ABFD, is one of the special
- __GOTT_BASE__ or __GOTT_INDEX__ symbols. */
-
-static bfd_boolean
-elf_vxworks_gott_symbol_p (bfd *abfd, const char *name)
-{
- char leading;
-
- leading = bfd_get_symbol_leading_char (abfd);
- if (leading)
- {
- if (*name != leading)
- return FALSE;
- name++;
- }
- return (strcmp (name, "__GOTT_BASE__") == 0
- || strcmp (name, "__GOTT_INDEX__") == 0);
-}
-
-/* Tweak magic VxWorks symbols as they are loaded. */
-bfd_boolean
-elf_vxworks_add_symbol_hook (bfd *abfd,
- struct bfd_link_info *info,
- Elf_Internal_Sym *sym,
- const char **namep,
- flagword *flagsp,
- asection **secp ATTRIBUTE_UNUSED,
- bfd_vma *valp ATTRIBUTE_UNUSED)
-{
- /* Ideally these "magic" symbols would be exported by libc.so.1
- which would be found via a DT_NEEDED tag, and then handled
- specially by the linker at runtime. Except shared libraries
- don't even link to libc.so.1 by default...
- If the symbol is imported from, or will be put in a shared library,
- give the symbol weak binding to get the desired samantics.
- This transformation will be undone in
- elf_i386_vxworks_link_output_symbol_hook. */
- if ((info->shared || abfd->flags & DYNAMIC)
- && elf_vxworks_gott_symbol_p (abfd, *namep))
- {
- sym->st_info = ELF_ST_INFO (STB_WEAK, ELF_ST_TYPE (sym->st_info));
- *flagsp |= BSF_WEAK;
- }
-
- return TRUE;
-}
-
-/* Perform VxWorks-specific handling of the create_dynamic_sections hook.
- When creating an executable, set *SRELPLT2_OUT to the .rel(a).plt.unloaded
- section. */
-
-bfd_boolean
-elf_vxworks_create_dynamic_sections (bfd *dynobj, struct bfd_link_info *info,
- asection **srelplt2_out)
-{
- struct elf_link_hash_table *htab;
- const struct elf_backend_data *bed;
- asection *s;
-
- htab = elf_hash_table (info);
- bed = get_elf_backend_data (dynobj);
-
- if (!info->shared)
- {
- s = bfd_make_section_anyway_with_flags (dynobj,
- bed->default_use_rela_p
- ? ".rela.plt.unloaded"
- : ".rel.plt.unloaded",
- SEC_HAS_CONTENTS | SEC_IN_MEMORY
- | SEC_READONLY
- | SEC_LINKER_CREATED);
- if (s == NULL
- || !bfd_set_section_alignment (dynobj, s, bed->s->log_file_align))
- return FALSE;
-
- *srelplt2_out = s;
- }
-
- /* Mark the GOT and PLT symbols as having relocations; they might
- not, but we won't know for sure until we build the GOT in
- finish_dynamic_symbol. Also make sure that the GOT symbol
- is entered into the dynamic symbol table; the loader uses it
- to initialize __GOTT_BASE__[__GOTT_INDEX__]. */
- if (htab->hgot)
- {
- htab->hgot->indx = -2;
- htab->hgot->other &= ~ELF_ST_VISIBILITY (-1);
- htab->hgot->forced_local = 0;
- if (!bfd_elf_link_record_dynamic_symbol (info, htab->hgot))
- return FALSE;
- }
- if (htab->hplt)
- {
- htab->hplt->indx = -2;
- htab->hplt->type = STT_FUNC;
- }
-
- return TRUE;
-}
-
-/* Tweak magic VxWorks symbols as they are written to the output file. */
-int
-elf_vxworks_link_output_symbol_hook (struct bfd_link_info *info
- ATTRIBUTE_UNUSED,
- const char *name,
- Elf_Internal_Sym *sym,
- asection *input_sec ATTRIBUTE_UNUSED,
- struct elf_link_hash_entry *h)
-{
- /* Reverse the effects of the hack in elf_vxworks_add_symbol_hook. */
- if (h
- && h->root.type == bfd_link_hash_undefweak
- && elf_vxworks_gott_symbol_p (h->root.u.undef.abfd, name))
- sym->st_info = ELF_ST_INFO (STB_GLOBAL, ELF_ST_TYPE (sym->st_info));
-
- return 1;
-}
-
-/* Copy relocations into the output file. Fixes up relocations against PLT
- entries, then calls the generic routine. */
-
-bfd_boolean
-elf_vxworks_emit_relocs (bfd *output_bfd,
- asection *input_section,
- Elf_Internal_Shdr *input_rel_hdr,
- Elf_Internal_Rela *internal_relocs,
- struct elf_link_hash_entry **rel_hash)
-{
- const struct elf_backend_data *bed;
- int j;
-
- bed = get_elf_backend_data (output_bfd);
-
- if (output_bfd->flags & (DYNAMIC|EXEC_P))
- {
- Elf_Internal_Rela *irela;
- Elf_Internal_Rela *irelaend;
- struct elf_link_hash_entry **hash_ptr;
-
- for (irela = internal_relocs,
- irelaend = irela + (NUM_SHDR_ENTRIES (input_rel_hdr)
- * bed->s->int_rels_per_ext_rel),
- hash_ptr = rel_hash;
- irela < irelaend;
- irela += bed->s->int_rels_per_ext_rel,
- hash_ptr++)
- {
- if (*hash_ptr
- && (*hash_ptr)->def_dynamic
- && !(*hash_ptr)->def_regular
- && ((*hash_ptr)->root.type == bfd_link_hash_defined
- || (*hash_ptr)->root.type == bfd_link_hash_defweak)
- && (*hash_ptr)->root.u.def.section->output_section != NULL)
- {
- /* This is a relocation from an executable or shared
- library against a symbol in a different shared
- library. We are creating a definition in the output
- file but it does not come from any of our normal (.o)
- files. ie. a PLT stub. Normally this would be a
- relocation against against SHN_UNDEF with the VMA of
- the PLT stub. This upsets the VxWorks loader.
- Convert it to a section-relative relocation. This
- gets some other symbols (for instance .dynbss), but
- is conservatively correct. */
- for (j = 0; j < bed->s->int_rels_per_ext_rel; j++)
- {
- asection *sec = (*hash_ptr)->root.u.def.section;
- int this_idx = sec->output_section->target_index;
-
- irela[j].r_info
- = ELF32_R_INFO (this_idx, ELF32_R_TYPE (irela[j].r_info));
- irela[j].r_addend += (*hash_ptr)->root.u.def.value;
- irela[j].r_addend += sec->output_offset;
- }
- /* Stop the generic routine adjusting this entry. */
- *hash_ptr = NULL;
- }
- }
- }
- return _bfd_elf_link_output_relocs (output_bfd, input_section,
- input_rel_hdr, internal_relocs,
- rel_hash);
-}
-
-
-/* Set the sh_link and sh_info fields on the static plt relocation secton. */
-
-void
-elf_vxworks_final_write_processing (bfd *abfd,
- bfd_boolean linker ATTRIBUTE_UNUSED)
-{
- asection * sec;
- struct bfd_elf_section_data *d;
-
- sec = bfd_get_section_by_name (abfd, ".rel.plt.unloaded");
- if (!sec)
- sec = bfd_get_section_by_name (abfd, ".rela.plt.unloaded");
- if (!sec)
- return;
- d = elf_section_data (sec);
- d->this_hdr.sh_link = elf_onesymtab (abfd);
- sec = bfd_get_section_by_name (abfd, ".plt");
- if (sec)
- d->this_hdr.sh_info = elf_section_data (sec)->this_idx;
-}
-
-/* Add the dynamic entries required by VxWorks. These point to the
- tls sections. */
-
-bfd_boolean
-elf_vxworks_add_dynamic_entries (bfd *output_bfd, struct bfd_link_info *info)
-{
- if (bfd_get_section_by_name (output_bfd, ".tls_data"))
- {
- if (!_bfd_elf_add_dynamic_entry (info, DT_VX_WRS_TLS_DATA_START, 0)
- || !_bfd_elf_add_dynamic_entry (info, DT_VX_WRS_TLS_DATA_SIZE, 0)
- || !_bfd_elf_add_dynamic_entry (info, DT_VX_WRS_TLS_DATA_ALIGN, 0))
- return FALSE;
- }
- if (bfd_get_section_by_name (output_bfd, ".tls_vars"))
- {
- if (!_bfd_elf_add_dynamic_entry (info, DT_VX_WRS_TLS_VARS_START, 0)
- || !_bfd_elf_add_dynamic_entry (info, DT_VX_WRS_TLS_VARS_SIZE, 0))
- return FALSE;
- }
- return TRUE;
-}
-
-/* If *DYN is one of the VxWorks-specific dynamic entries, then fill
- in the value now and return TRUE. Otherwise return FALSE. */
-
-bfd_boolean
-elf_vxworks_finish_dynamic_entry (bfd *output_bfd, Elf_Internal_Dyn *dyn)
-{
- asection *sec;
-
- switch (dyn->d_tag)
- {
- default:
- return FALSE;
-
- case DT_VX_WRS_TLS_DATA_START:
- sec = bfd_get_section_by_name (output_bfd, ".tls_data");
- dyn->d_un.d_ptr = sec->vma;
- break;
-
- case DT_VX_WRS_TLS_DATA_SIZE:
- sec = bfd_get_section_by_name (output_bfd, ".tls_data");
- dyn->d_un.d_val = sec->size;
- break;
-
- case DT_VX_WRS_TLS_DATA_ALIGN:
- sec = bfd_get_section_by_name (output_bfd, ".tls_data");
- dyn->d_un.d_val
- = (bfd_size_type)1 << bfd_get_section_alignment (output_bfd,
- sec);
- break;
-
- case DT_VX_WRS_TLS_VARS_START:
- sec = bfd_get_section_by_name (output_bfd, ".tls_vars");
- dyn->d_un.d_ptr = sec->vma;
- break;
-
- case DT_VX_WRS_TLS_VARS_SIZE:
- sec = bfd_get_section_by_name (output_bfd, ".tls_vars");
- dyn->d_un.d_val = sec->size;
- break;
- }
- return TRUE;
-}
-
-