bb1dd176fb
* elf32-sparc.c (elf_backend_fixup_symbol): New.
* elf64-sparc.c (elf_backend_fixup_symbol): New.
* elfxx-sparc.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New.
(_bfd_sparc_elf_link_hash_entry): Add has_got_reloc and
has_non_got_reloc.
(link_hash_newfunc): Initialize has_got_reloc and
has_non_got_reloc.
(_bfd_sparc_elf_size_dynamic_sections): Set interp to .interp
section.
(_bfd_sparc_elf_copy_indirect_symbol): Copy has_got_reloc and
has_non_got_reloc.
(_bfd_sparc_elf_check_relocs): Set has_got_reloc and
has_non_got_reloc.
(_bfd_sparc_elf_fixup_symbol): New function.
(allocate_dynrelocs): Don't allocate space for dynamic
relocations and discard relocations against resolved undefined
weak symbols in executable. Don't make resolved undefined weak
symbols in executable dynamic. Keep dynamic non-GOT/non-PLT
relocation against undefined weak symbols in PIE.
(_bfd_sparc_elf_relocate_section): Don't generate dynamic
relocations against resolved undefined weak symbols in PIE
(_bfd_sparc_elf_finish_dynamic_symbol): Keep PLT/GOT entries
without ynamic PLT/GOT relocations for resolved undefined weak
symbols.
Don't generate dynamic relocation against resolved undefined
weak symbol in executable.
(pie_finish_undefweak_symbol): New function.
(_bfd_sparc_elf_finish_dynamic_sections): Call
pie_finish_undefweak_symbol on all symbols in PIE.
* elfxx-sparc.h (_bfd_sparc_elf_link_hash_table): Add interp.
(_bfd_sparc_elf_fixup_symbol): New function.
150 lines
5.1 KiB
C
150 lines
5.1 KiB
C
/* SPARC ELF specific backend routines.
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Copyright (C) 2005-2017 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 3 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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#include "elf/common.h"
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#include "elf/internal.h"
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struct _bfd_sparc_elf_section_data
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{
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struct bfd_elf_section_data elf;
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unsigned int do_relax, reloc_count;
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};
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#define sec_do_relax(sec) \
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((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->do_relax
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#define canon_reloc_count(sec) \
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((struct _bfd_sparc_elf_section_data *) elf_section_data (sec))->reloc_count
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struct _bfd_sparc_elf_app_reg
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{
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unsigned char bind;
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unsigned short shndx;
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bfd *abfd;
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char *name;
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};
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/* Sparc ELF linker hash table. */
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struct _bfd_sparc_elf_link_hash_table
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{
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struct elf_link_hash_table elf;
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/* Short-cut to get to dynamic linker sections. */
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asection *interp;
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union
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{
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bfd_signed_vma refcount;
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bfd_vma offset;
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} tls_ldm_got;
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/* Small local sym cache. */
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struct sym_cache sym_cache;
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/* Used by local STT_GNU_IFUNC symbols. */
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htab_t loc_hash_table;
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void *loc_hash_memory;
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/* True if the target system is VxWorks. */
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int is_vxworks;
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/* The (unloaded but important) .rela.plt.unloaded section, for VxWorks. */
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asection *srelplt2;
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void (*put_word) (bfd *, bfd_vma, void *);
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bfd_vma (*r_info) (Elf_Internal_Rela *, bfd_vma, bfd_vma);
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bfd_vma (*r_symndx) (bfd_vma);
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int (*build_plt_entry) (bfd *, asection *, bfd_vma, bfd_vma, bfd_vma *);
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const char *dynamic_interpreter;
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int dynamic_interpreter_size;
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unsigned int word_align_power;
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unsigned int align_power_max;
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unsigned int plt_header_size;
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unsigned int plt_entry_size;
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int bytes_per_word;
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int bytes_per_rela;
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int dtpoff_reloc;
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int dtpmod_reloc;
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int tpoff_reloc;
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struct _bfd_sparc_elf_app_reg app_regs [4];
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};
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/* Get the SPARC ELF linker hash table from a link_info structure. */
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#define _bfd_sparc_elf_hash_table(p) \
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(elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
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== SPARC_ELF_DATA ? ((struct _bfd_sparc_elf_link_hash_table *) ((p)->hash)) : NULL)
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extern reloc_howto_type *_bfd_sparc_elf_reloc_type_lookup
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(bfd *, bfd_reloc_code_real_type);
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extern reloc_howto_type *_bfd_sparc_elf_reloc_name_lookup
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(bfd *, const char *);
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extern void _bfd_sparc_elf_info_to_howto
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(bfd *, arelent *, Elf_Internal_Rela *);
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extern reloc_howto_type *_bfd_sparc_elf_info_to_howto_ptr
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(unsigned int);
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extern bfd_boolean _bfd_sparc_elf_mkobject
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(bfd *);
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extern struct bfd_link_hash_table *_bfd_sparc_elf_link_hash_table_create
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(bfd *);
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extern bfd_boolean _bfd_sparc_elf_create_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern void _bfd_sparc_elf_copy_indirect_symbol
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(struct bfd_link_info *,
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struct elf_link_hash_entry *,
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struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_sparc_elf_check_relocs
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(bfd *, struct bfd_link_info *,
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asection *, const Elf_Internal_Rela *);
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extern asection *_bfd_sparc_elf_gc_mark_hook
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(asection *, struct bfd_link_info *,
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Elf_Internal_Rela *, struct elf_link_hash_entry *,
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Elf_Internal_Sym *);
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extern bfd_boolean _bfd_sparc_elf_gc_sweep_hook
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(bfd *, struct bfd_link_info *,
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asection *, const Elf_Internal_Rela *);
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extern bfd_boolean _bfd_sparc_elf_adjust_dynamic_symbol
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(struct bfd_link_info *, struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_sparc_elf_omit_section_dynsym
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(bfd *, struct bfd_link_info *, asection *);
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extern bfd_boolean _bfd_sparc_elf_size_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_sparc_elf_new_section_hook
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(bfd *, asection *);
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extern bfd_boolean _bfd_sparc_elf_relax_section
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(bfd *, struct bfd_section *, struct bfd_link_info *, bfd_boolean *);
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extern bfd_boolean _bfd_sparc_elf_relocate_section
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(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
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extern bfd_boolean _bfd_sparc_elf_finish_dynamic_symbol
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(bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
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Elf_Internal_Sym *sym);
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extern bfd_boolean _bfd_sparc_elf_finish_dynamic_sections
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(bfd *, struct bfd_link_info *);
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extern bfd_boolean _bfd_sparc_elf_fixup_symbol
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(struct bfd_link_info *, struct elf_link_hash_entry *);
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extern bfd_boolean _bfd_sparc_elf_object_p
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(bfd *);
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extern bfd_vma _bfd_sparc_elf_plt_sym_val
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(bfd_vma, const asection *, const arelent *);
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extern bfd_boolean _bfd_sparc_elf_merge_private_bfd_data
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(bfd *, struct bfd_link_info *);
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