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5c3261b0e8
For all ELF targers, call check_relocs after opening all inputs and garbage collection. Since the symbol resolution is known, check_relocs can be simplified. Also garbage collection doesn't need to undo what check_relocs has done for symbols which have been garbage collected. Since ELF targets never see the removed sections, gc_sweep_hook can be removed from elf_backend_data and we can avoid GOT/PLT with garbage collection now. Set link_info.check_relocs_after_open_input to TRUE for all linker targets which use ELF linker and update garbage collection tests to remove unused GOT section. ldemul_after_check_relocs is added for powerpc to support --secure-plt, --bss-plt and --sdata-got. Tested natively without regressions on i686, x86-64 and x32. Tested cross binutils on x86-64 without regressions for aarch64-linux, alpha-linux, arm-linux, bfin-elf, cr16-elf, cris-elf, crx-elf, frv-linux, hppa64-linux, hppa-linux, ia64-linux, lm32-elf, m32r-elf, m68k-linux, mcore-elf, metag-elf, microblaze-linux, mips-linux, mmix, mn10300-elf, nds32le-linux, nios2-linux, or1k-elf, powerpc64-linux, powerpc-linux, riscv32-linux, riscv64-linux, s390-linux, s390x-linux, score-elf, sh3-linux, sparc64-linux, sparc-linux, tic6x-elf, tilegx-linux, tilepro-linux, vax-linux, x86_64-mingw32 and xtensa-linux. bfd/ * elf-bfd.h (elf_backend_data): Remove gc_sweep_hook. * elf32-arm.c (elf32_arm_gc_sweep_hook): Removed. (elf_backend_gc_sweep_hook): Likewise. * elf32-bfin.c (bfin_gc_sweep_hook): Likewise. (bfinfdpic_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-cr16.c (elf32_cr16_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-cris.c (cris_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-hppa.c (elf32_hppa_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-lm32.c (lm32_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-m32r.c (m32r_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-m68k.c (elf_m68k_got_entry): Remove elf_m68k_gc_sweep_hook from comments. (elf_m68k_remove_got_entry_type): Removed. (elf_m68k_find_got_entry_ptr): Likewise. (elf_m68k_remove_got_entry): Likewise. (elf_m68k_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-mcore.c (mcore_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-metag.c (elf_metag_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-microblaze.c (elf_backend_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-mips.c (elf_backend_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-nds32.c (nds32_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-nios2.c (nios2_elf32_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-or1k.c (or1k_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-ppc.c (ppc_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-s390.c (elf_s390_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-sparc.c (elf_backend_gc_sweep_hook): Likewise. * elf32-tic6x.c (elf32_tic6x_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-tilegx.c (elf_backend_gc_sweep_hook): Likewise. * elf32-tilepro.c (tilepro_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-vax.c (elf_vax_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf32-xtensa.c (elf_xtensa_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf64-alpha.c (elf64_alpha_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf64-mips.c (elf_backend_gc_sweep_hook): Likewise. * elf64-mmix.c (mmix_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf64-ppc.c (elf_backend_gc_sweep_hook): Likewise. (ppc64_elf_gc_sweep_hook): Likewise. * elf64-s390.c (elf_s390_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elf64-sparc.c (elf_backend_gc_sweep_hook): Likewise. * elf64-tilegx.c (elf_backend_gc_sweep_hook): Likewise. * elflink.c (elf_link_add_object_symbols): Don't call _bfd_elf_link_check_relocs here. (gc_sweep_hook_fn): Removed. (elf_gc_sweep): Remove gc_sweep_hook. * elfnn-aarch64.c (elfNN_aarch64_gc_sweep_hook): Removed. (elf_backend_gc_sweep_hook): Likewise. * elfnn-riscv.c (riscv_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elfxx-mips.c (_bfd_mips_elf_gc_sweep_hook): Likewise. * elfxx-mips.h (_bfd_mips_elf_gc_sweep_hook): Likewise. (elf_backend_gc_sweep_hook): Likewise. * elfxx-sparc.c (_bfd_sparc_elf_gc_sweep_hook): Likewise. * elfxx-sparc.h (_bfd_sparc_elf_gc_sweep_hook): Likewise. * elfxx-target.h (elf_backend_gc_sweep_hook): Likewise. (elfNN_bed): Remove elf_backend_gc_sweep_hook. * elfxx-tilegx.c (tilegx_elf_gc_sweep_hook): Removed. * elfxx-tilegx.h (tilegx_elf_gc_sweep_hook): Likewise. ld/ * emulparams/elf32_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Removed. * emulparams/elf_i386_be.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_i386_chaos.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_i386_ldso.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_i386_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_iamcu.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_k1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_l1om.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/i386lynx.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/i386moss.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/i386nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/i386nw.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/shelf.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/shelf32.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/shelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/shelf_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/shlelf32_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/shlelf_linux.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/shlelf_nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emultempl/aarch64elf.em (gld${EMULATION_NAME}_before_parse): Set link_info.check_relocs_after_open_input to TRUE. * emultempl/armelf.em (gld${EMULATION_NAME}_before_parse): Likewise. * emultempl/scoreelf.em (gld${EMULATION_NAME}_before_parse): Likewise. * emultempl/aix.em (ld_${EMULATION_NAME}_emulation): Add after_parse_default. * emultempl/armcoff.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/beos.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/generic.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/gld960.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/gld960c.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/lnk960.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/m68kcoff.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/msp430.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/pe.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/pep.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/sunos.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/ticoff.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/vanilla.em (ld_${EMULATION_NAME}_emulation): Likewise. * emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Always set link_info.check_relocs_after_open_input to TRUE. (ld_${EMULATION_NAME}_emulation): Add $LDEMUL_AFTER_CHECK_RELOCS. * emultempl/linux.em (gld${EMULATION_NAME}_before_parse): Set link_info.check_relocs_after_open_input to TRUE. (ld_${EMULATION_NAME}_emulation): Add after_check_relocs_default. * emultempl/mmix-elfnmmo.em (mmix_before_parse): New function. (LDEMUL_BEFORE_PARSE): New. * emultempl/mmixelf.em (elfmmix_before_parse): Replace gld${EMULATION_NAME}_before_parse with mmix_before_parse. * emultempl/ppc32elf.em (ppc_after_open): Renamed to ... (ppc_after_check_relocs): This. Call after_check_relocs_default instead of gld${EMULATION_NAME}_after_open. (LDEMUL_AFTER_OPEN): Removed. (LDEMUL_AFTER_CHECK_RELOCS): New. * ldemul.c (ldemul_after_check_relocs): New. (after_check_relocs_default): Likewise. * ldemul.h (ldemul_after_check_relocs): Likewise. (after_check_relocs_default): Likewise. (ld_emulation_xfer_struct): Add after_check_relocs. * ldlang.c (lang_process): Call ldemul_after_check_relocs after lang_check_relocs. * testsuite/ld-aarch64/gc-got-relocs.d: Don't expect GOT section. * testsuite/ld-aarch64/gc-tls-relocs.d: Likewise. * testsuite/ld-cris/tls-gc-68.d: Likewise. * testsuite/ld-cris/tls-gc-69.d: Likewise. * testsuite/ld-cris/tls-gc-70.d: Likewise. * testsuite/ld-cris/tls-gc-75.d: Likewise. * testsuite/ld-cris/tls-gc-79.d: Likewise. * testsuite/ld-mmix/bpo-10.d: Don't expect .MMIX.reg_contents section.
96 lines
2.9 KiB
C
96 lines
2.9 KiB
C
/* TILE-Gx ELF specific backend routines.
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Copyright (C) 2011-2017 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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extern enum elf_reloc_type_class
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tilegx_reloc_type_class (const struct bfd_link_info *,
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const asection *,
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const Elf_Internal_Rela *);
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extern reloc_howto_type *
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tilegx_reloc_name_lookup (bfd *, const char *);
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extern struct bfd_link_hash_table *
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tilegx_elf_link_hash_table_create (bfd *);
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extern reloc_howto_type *
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tilegx_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
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extern void
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tilegx_elf_copy_indirect_symbol (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
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tilegx_elf_create_dynamic_sections (bfd *, struct bfd_link_info *);
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extern bfd_boolean
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tilegx_elf_check_relocs (bfd *, struct bfd_link_info *,
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asection *, const Elf_Internal_Rela *);
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extern bfd_boolean
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tilegx_elf_adjust_dynamic_symbol (struct bfd_link_info *,
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struct elf_link_hash_entry *);
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extern bfd_boolean
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tilegx_elf_omit_section_dynsym (bfd *,
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struct bfd_link_info *,
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asection *);
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extern bfd_boolean
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tilegx_elf_size_dynamic_sections (bfd *, struct bfd_link_info *);
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extern bfd_boolean
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tilegx_elf_relocate_section (bfd *, struct bfd_link_info *,
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bfd *, asection *,
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bfd_byte *, Elf_Internal_Rela *,
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Elf_Internal_Sym *,
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asection **);
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extern asection *
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tilegx_elf_gc_mark_hook (asection *,
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struct bfd_link_info *,
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Elf_Internal_Rela *,
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struct elf_link_hash_entry *,
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Elf_Internal_Sym *);
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extern bfd_vma
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tilegx_elf_plt_sym_val (bfd_vma, const asection *, const arelent *);
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extern void
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tilegx_info_to_howto_rela (bfd *, arelent *, Elf_Internal_Rela *);
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extern int
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tilegx_additional_program_headers (bfd *, struct bfd_link_info *);
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extern bfd_boolean
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tilegx_elf_finish_dynamic_symbol (bfd *,
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struct bfd_link_info *,
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struct elf_link_hash_entry *,
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Elf_Internal_Sym *);
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extern bfd_boolean
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tilegx_elf_finish_dynamic_sections (bfd *, struct bfd_link_info *);
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extern bfd_boolean
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_bfd_tilegx_elf_merge_private_bfd_data (bfd *, struct bfd_link_info *);
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