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d003868ea7
* bfd.c (_bfd_default_error_handler): Handle %A and %B. (bfd_archive_filename, bfd_get_section_ident): Delete. * ecofflink.c (bfd_ecoff_debug_accumulate_other): Don't call bfd_archive_filename. * elflink.c (elf_link_input_bfd): Don't use callbacks->error_handler to warn about symbols in discarded sections. Use _bfd_error_handler. * aout-adobe.c (aout_adobe_callback): See below. * aout-cris.c (swap_ext_reloc_in): .. * coff-arm.c (find_thumb_glue, find_arm_glue, coff_arm_relocate_section, bfd_arm_process_before_allocation, coff_arm_merge_private_bfd_data, _bfd_coff_arm_set_private_flags, coff_arm_copy_private_bfd_data): .. * coff-i860.c (i860_reloc_processing): .. * coff-mcore.c (mcore_coff_unsupported_reloc, coff_mcore_relocate_section): .. * coff-ppc.c (coff_ppc_relocate_section): .. * coff-rs6000.c (xcoff_create_csect_from_smclas * coff-sh.c (sh_relax_section, sh_relax_delete_bytes, sh_swap_insns, sh_relocate_section): .. * coff-tic54x.c (tic54x_reloc_processing): .. * coff-tic80.c (coff_tic80_relocate_section): .. * coff64-rs6000.c (xcoff64_create_csect_from_smclas): .. * coffcode.h (styp_to_sec_flags, coff_slurp_line_table, coff_slurp_symbol_table, coff_classify_symbol, coff_slurp_reloc_table): .. * coffgen.c (_bfd_coff_read_string_table): .. * cofflink.c (coff_link_add_symbols, _bfd_coff_link_input_bfd, _bfd_coff_generic_relocate_section): .. * cpu-arm.c (bfd_arm_merge_machines): .. * cpu-sh.c (sh_merge_bfd_arch): .. * elf-hppa.h (elf_hppa_relocate_section): .. * elf.c (bfd_elf_string_from_elf_section, setup_group, _bfd_elf_setup_group_pointers, bfd_section_from_shdr, assign_section_numbers, _bfd_elf_symbol_from_bfd_symbol, copy_private_bfd_data, _bfd_elf_validate_reloc): .. * elf32-arm.h (find_thumb_glue, find_arm_glue, bfd_elf32_arm_process_before_allocation, elf32_thumb_to_arm_stub, elf32_arm_to_thumb_stub, elf32_arm_final_link_relocate, elf32_arm_relocate_section, elf32_arm_set_private_flags, elf32_arm_copy_private_bfd_data, elf32_arm_merge_private_bfd_data): .. * elf32-cris.c (cris_elf_relocate_section, cris_elf_check_relocs, cris_elf_merge_private_bfd_data * elf32-frv.c (elf32_frv_relocate_section, elf32_frv_check_relocs): .. * elf32-gen.c (elf32_generic_link_add_symbols): .. * elf32-hppa.c (hppa_add_stub, hppa_build_one_stub, elf32_hppa_check_relocs, get_local_syms, final_link_relocate, elf32_hppa_relocate_section): .. * elf32-i370.c (i370_elf_merge_private_bfd_data, i370_elf_check_relocs, i370_elf_relocate_section): .. * elf32-i386.c (elf_i386_info_to_howto_rel, elf_i386_check_relocs, elf_i386_relocate_section): .. * elf32-m32r.c (m32r_elf_relocate_section, m32r_elf_merge_private_bfd_data): .. * elf32-m68hc1x.c (m68hc12_add_stub, _bfd_m68hc11_elf_merge_private_bfd_data): .. * elf32-m68k.c (elf_m68k_relocate_section): .. * elf32-mcore.c (mcore_elf_unsupported_reloc, mcore_elf_relocate_section): .. * elf32-ppc.c (ppc_elf_merge_private_bfd_data, bad_shared_reloc, ppc_elf_check_relocs, ppc_elf_relocate_section, ppc_elf_begin_write_processing): .. * elf32-s390.c (elf_s390_check_relocs, invalid_tls_insn, elf_s390_relocate_section): .. * elf32-sh-symbian.c (sh_symbian_import_as, sh_symbian_process_embedded_commands, sh_symbian_relocate_section): .. * elf32-sh.c (sh_elf_relax_section, sh_elf_relax_delete_bytes, sh_elf_swap_insns, sh_elf_relocate_section, sh_elf_check_relocs, sh_elf_merge_private_data): .. * elf32-sparc.c (elf32_sparc_check_relocs, elf32_sparc_relocate_section, elf32_sparc_merge_private_bfd_data): .. * elf32-v850.c (v850_elf_check_relocs, v850_elf_merge_private_bfd_data): .. * elf32-xtensa.c (elf_xtensa_check_relocs, elf_xtensa_relocate_section, elf_xtensa_merge_private_bfd_data): .. * elf64-alpha.c (elf64_alpha_relax_with_lituse, elf64_alpha_relax_got_load, elf64_alpha_size_got_sections, elf64_alpha_relocate_section_r, elf64_alpha_relocate_section): .. * elf64-gen.c (elf64_generic_link_add_symbols): .. * elf64-ppc.c (ppc64_elf_merge_private_bfd_data, ppc_add_stub, ppc64_elf_check_relocs, ppc64_elf_edit_opd, ppc64_elf_relocate_section): .. * elf64-s390.c (elf_s390_check_relocs, invalid_tls_insn, elf_s390_relocate_section): .. * elf64-sh64.c (sh_elf64_relocate_section): .. * elf64-sparc.c (sparc64_elf_check_relocs, sparc64_elf_add_symbol_hook, sparc64_elf_relocate_section, sparc64_elf_merge_private_bfd_data): .. * elf64-x86-64.c (elf64_x86_64_check_relocs, elf64_x86_64_relocate_section): .. * elflink.c (_bfd_elf_add_default_symbol, _bfd_elf_link_assign_sym_version, elf_link_read_relocs_from_section, _bfd_elf_link_output_relocs, elf_link_add_object_symbols, bfd_elf_size_dynamic_sections, elf_link_output_extsym, elf_get_linked_section_vma, elf_fixup_link_order, bfd_elf_final_link, bfd_elf_gc_record_vtinherit, bfd_elf_gc_record_vtinherit, _bfd_elf_section_already_linked): .. * elfxx-ia64.c (elfNN_ia64_relax_section, elfNN_ia64_relocate_section, elfNN_ia64_merge_private_bfd_data): .. * elfxx-mips.c (mips_elf_perform_relocation, _bfd_mips_elf_check_relocs, _bfd_mips_elf_merge_private_bfd_data): .. * ieee.c (ieee_slurp_external_symbols): .. * ihex.c (ihex_bad_byte, ihex_scan, ihex_read_section): .. * libbfd.c (_bfd_generic_verify_endian_match): .. * linker.c (_bfd_generic_link_add_one_symbol, _bfd_generic_section_already_linked): .. * pdp11.c (translate_to_native_sym_flags): .. * pe-mips.c (coff_pe_mips_relocate_section): .. * peicode.h (pe_ILF_build_a_bfd): .. * srec.c (srec_bad_byte): .. * stabs.c (_bfd_link_section_stabs): .. * xcofflink.c (xcoff_link_add_symbols, xcoff_link_input_bfd): .. Replace all uses of bfd_archive_filename and bfd_get_section_ident with corresponding %B and %A in _bfd_error_handler format string. Replace occurrences of "fprintf (stderr," with _bfd_error_handler calls to use %A and %B. Fix "against symbol .. from section" and similar error messages. Combine multiple _bfd_error_handler calls where they were separated due to bfd_archive_filename deficiencies. * bfd-in2.h: Regenerate. include/ * bfdlink.h (struct bfd_link_callbacks): Remove "error_handler". (LD_DEFINITION_IN_DISCARDED_SECTION): Delete. ld/ * ldmain.c (link_callbacks): Remove "error_handler". * ldmisc.c: Include elf-bfd.h. (vfinfo): Sort comment. Handle %A. Use %A instead of bfd_get_section_indent. (error_handler): Delete. * ldmisc.h (error_handler): Delete declaration.
696 lines
22 KiB
C
696 lines
22 KiB
C
/* Motorola MCore specific support for 32-bit ELF
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Copyright 1994, 1995, 1999, 2000, 2001, 2002, 2003, 2004
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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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/* This file is based on a preliminary RCE ELF ABI. The
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information may not match the final RCE ELF ABI. */
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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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#include "elf-bfd.h"
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#include "elf/mcore.h"
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#include <assert.h>
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/* RELA relocs are used here... */
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static void mcore_elf_howto_init
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PARAMS ((void));
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static reloc_howto_type * mcore_elf_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void mcore_elf_info_to_howto
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PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
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static bfd_boolean mcore_elf_set_private_flags
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PARAMS ((bfd *, flagword));
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static bfd_boolean mcore_elf_merge_private_bfd_data
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PARAMS ((bfd *, bfd *));
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static bfd_reloc_status_type mcore_elf_unsupported_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_boolean mcore_elf_relocate_section
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PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
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Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
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static asection * mcore_elf_gc_mark_hook
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PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
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struct elf_link_hash_entry *, Elf_Internal_Sym *));
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static bfd_boolean mcore_elf_gc_sweep_hook
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static bfd_boolean mcore_elf_check_relocs
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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static reloc_howto_type * mcore_elf_howto_table [(int) R_MCORE_max];
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static reloc_howto_type mcore_elf_howto_raw[] =
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{
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/* This reloc does nothing. */
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HOWTO (R_MCORE_NONE, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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NULL, /* special_function */
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"R_MCORE_NONE", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* A standard 32 bit relocation. */
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HOWTO (R_MCORE_ADDR32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"ADDR32", /* name *//* For compatibility with coff/pe port. */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* 8 bits + 2 zero bits; jmpi/jsri/lrw instructions.
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Should not appear in object files. */
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HOWTO (R_MCORE_PCRELIMM8BY4, /* type */
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2, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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mcore_elf_unsupported_reloc, /* special_function */
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"R_MCORE_PCRELIMM8BY4",/* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* bsr/bt/bf/br instructions; 11 bits + 1 zero bit
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Span 2k instructions == 4k bytes.
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Only useful pieces at the relocated address are the opcode (5 bits) */
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HOWTO (R_MCORE_PCRELIMM11BY2,/* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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11, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_MCORE_PCRELIMM11BY2",/* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0x7ff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* 4 bits + 1 zero bit; 'loopt' instruction only; unsupported. */
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HOWTO (R_MCORE_PCRELIMM4BY2, /* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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4, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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mcore_elf_unsupported_reloc,/* special_function */
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"R_MCORE_PCRELIMM4BY2",/* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* 32-bit pc-relative. Eventually this will help support PIC code. */
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HOWTO (R_MCORE_PCREL32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_MCORE_PCREL32", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0xffffffff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* Like PCRELIMM11BY2, this relocation indicates that there is a
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'jsri' at the specified address. There is a separate relocation
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entry for the literal pool entry that it references, but we
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might be able to change the jsri to a bsr if the target turns out
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to be close enough [even though we won't reclaim the literal pool
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entry, we'll get some runtime efficiency back]. Note that this
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is a relocation that we are allowed to safely ignore. */
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HOWTO (R_MCORE_PCRELJSR_IMM11BY2,/* type */
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1, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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11, /* bitsize */
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TRUE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_MCORE_PCRELJSR_IMM11BY2", /* name */
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FALSE, /* partial_inplace */
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0x0, /* src_mask */
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0x7ff, /* dst_mask */
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TRUE), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy */
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HOWTO (R_MCORE_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"R_MCORE_GNU_VTINHERIT", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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/* GNU extension to record C++ vtable member usage */
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HOWTO (R_MCORE_GNU_VTENTRY, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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_bfd_elf_rel_vtable_reloc_fn, /* special_function */
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"R_MCORE_GNU_VTENTRY", /* name */
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FALSE, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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FALSE), /* pcrel_offset */
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HOWTO (R_MCORE_RELATIVE, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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FALSE, /* pc_relative */
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0, /* bitpos */
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complain_overflow_signed, /* complain_on_overflow */
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NULL, /* special_function */
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"R_MCORE_RELATIVE", /* name */
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TRUE, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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FALSE) /* pcrel_offset */
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};
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#ifndef NUM_ELEM
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#define NUM_ELEM(a) (sizeof (a) / sizeof (a)[0])
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#endif
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/* Initialize the mcore_elf_howto_table, so that linear accesses can be done. */
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static void
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mcore_elf_howto_init ()
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{
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unsigned int i;
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for (i = NUM_ELEM (mcore_elf_howto_raw); i--;)
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{
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unsigned int type;
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type = mcore_elf_howto_raw[i].type;
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BFD_ASSERT (type < NUM_ELEM (mcore_elf_howto_table));
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mcore_elf_howto_table [type] = & mcore_elf_howto_raw [i];
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}
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}
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static reloc_howto_type *
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mcore_elf_reloc_type_lookup (abfd, code)
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bfd * abfd ATTRIBUTE_UNUSED;
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bfd_reloc_code_real_type code;
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{
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enum elf_mcore_reloc_type mcore_reloc = R_MCORE_NONE;
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switch (code)
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{
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case BFD_RELOC_NONE: mcore_reloc = R_MCORE_NONE; break;
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case BFD_RELOC_32: mcore_reloc = R_MCORE_ADDR32; break;
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case BFD_RELOC_MCORE_PCREL_IMM8BY4: mcore_reloc = R_MCORE_PCRELIMM8BY4; break;
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case BFD_RELOC_MCORE_PCREL_IMM11BY2: mcore_reloc = R_MCORE_PCRELIMM11BY2; break;
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case BFD_RELOC_MCORE_PCREL_IMM4BY2: mcore_reloc = R_MCORE_PCRELIMM4BY2; break;
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case BFD_RELOC_32_PCREL: mcore_reloc = R_MCORE_PCREL32; break;
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case BFD_RELOC_MCORE_PCREL_JSR_IMM11BY2: mcore_reloc = R_MCORE_PCRELJSR_IMM11BY2; break;
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case BFD_RELOC_VTABLE_INHERIT: mcore_reloc = R_MCORE_GNU_VTINHERIT; break;
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case BFD_RELOC_VTABLE_ENTRY: mcore_reloc = R_MCORE_GNU_VTENTRY; break;
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case BFD_RELOC_RVA: mcore_reloc = R_MCORE_RELATIVE; break;
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default:
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return (reloc_howto_type *)NULL;
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}
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if (! mcore_elf_howto_table [R_MCORE_PCRELIMM8BY4]) /* Initialize howto table if needed */
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mcore_elf_howto_init ();
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return mcore_elf_howto_table [(int) mcore_reloc];
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};
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/* Set the howto pointer for a RCE ELF reloc. */
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static void
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mcore_elf_info_to_howto (abfd, cache_ptr, dst)
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bfd * abfd ATTRIBUTE_UNUSED;
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arelent * cache_ptr;
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Elf_Internal_Rela * dst;
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{
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if (! mcore_elf_howto_table [R_MCORE_PCRELIMM8BY4]) /* Initialize howto table if needed */
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mcore_elf_howto_init ();
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BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_MCORE_max);
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cache_ptr->howto = mcore_elf_howto_table [ELF32_R_TYPE (dst->r_info)];
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}
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/* Function to set whether a module needs the -mrelocatable bit set. */
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static bfd_boolean
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mcore_elf_set_private_flags (abfd, flags)
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bfd * abfd;
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flagword flags;
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{
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BFD_ASSERT (! elf_flags_init (abfd)
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|| elf_elfheader (abfd)->e_flags == flags);
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elf_elfheader (abfd)->e_flags = flags;
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elf_flags_init (abfd) = TRUE;
|
||
return TRUE;
|
||
}
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
static bfd_boolean
|
||
mcore_elf_merge_private_bfd_data (ibfd, obfd)
|
||
bfd * ibfd;
|
||
bfd * obfd;
|
||
{
|
||
flagword old_flags;
|
||
flagword new_flags;
|
||
|
||
/* Check if we have the same endianess */
|
||
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
|
||
return FALSE;
|
||
|
||
if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|
||
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
|
||
return TRUE;
|
||
|
||
new_flags = elf_elfheader (ibfd)->e_flags;
|
||
old_flags = elf_elfheader (obfd)->e_flags;
|
||
|
||
if (! elf_flags_init (obfd)) /* First call, no flags set */
|
||
{
|
||
elf_flags_init (obfd) = TRUE;
|
||
elf_elfheader (obfd)->e_flags = new_flags;
|
||
}
|
||
else if (new_flags == old_flags) /* Compatible flags are ok */
|
||
;
|
||
else
|
||
{
|
||
/* FIXME */
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
/* Don't pretend we can deal with unsupported relocs. */
|
||
|
||
static bfd_reloc_status_type
|
||
mcore_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
|
||
output_bfd, error_message)
|
||
bfd * abfd;
|
||
arelent * reloc_entry;
|
||
asymbol * symbol ATTRIBUTE_UNUSED;
|
||
PTR data ATTRIBUTE_UNUSED;
|
||
asection * input_section ATTRIBUTE_UNUSED;
|
||
bfd * output_bfd ATTRIBUTE_UNUSED;
|
||
char ** error_message ATTRIBUTE_UNUSED;
|
||
{
|
||
BFD_ASSERT (reloc_entry->howto != (reloc_howto_type *)0);
|
||
|
||
_bfd_error_handler (_("%B: Relocation %s (%d) is not currently supported.\n"),
|
||
abfd,
|
||
reloc_entry->howto->name,
|
||
reloc_entry->howto->type);
|
||
|
||
return bfd_reloc_notsupported;
|
||
}
|
||
|
||
/* The RELOCATE_SECTION function is called by the ELF backend linker
|
||
to handle the relocations for a section.
|
||
|
||
The relocs are always passed as Rela structures; if the section
|
||
actually uses Rel structures, the r_addend field will always be
|
||
zero.
|
||
|
||
This function is responsible for adjust the section contents as
|
||
necessary, and (if using Rela relocs and generating a
|
||
relocatable output file) adjusting the reloc addend as
|
||
necessary.
|
||
|
||
This function does not have to worry about setting the reloc
|
||
address or the reloc symbol index.
|
||
|
||
LOCAL_SYMS is a pointer to the swapped in local symbols.
|
||
|
||
LOCAL_SECTIONS is an array giving the section in the input file
|
||
corresponding to the st_shndx field of each local symbol.
|
||
|
||
The global hash table entry for the global symbols can be found
|
||
via elf_sym_hashes (input_bfd).
|
||
|
||
When generating relocatable output, this function must handle
|
||
STB_LOCAL/STT_SECTION symbols specially. The output symbol is
|
||
going to be the section symbol corresponding to the output
|
||
section, which means that the addend must be adjusted
|
||
accordingly. */
|
||
|
||
static bfd_boolean
|
||
mcore_elf_relocate_section (output_bfd, info, input_bfd, input_section,
|
||
contents, relocs, local_syms, local_sections)
|
||
bfd * output_bfd;
|
||
struct bfd_link_info * info;
|
||
bfd * input_bfd;
|
||
asection * input_section;
|
||
bfd_byte * contents;
|
||
Elf_Internal_Rela * relocs;
|
||
Elf_Internal_Sym * local_syms;
|
||
asection ** local_sections;
|
||
{
|
||
Elf_Internal_Shdr * symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
|
||
struct elf_link_hash_entry ** sym_hashes = elf_sym_hashes (input_bfd);
|
||
Elf_Internal_Rela * rel = relocs;
|
||
Elf_Internal_Rela * relend = relocs + input_section->reloc_count;
|
||
bfd_boolean ret = TRUE;
|
||
|
||
#ifdef DEBUG
|
||
_bfd_error_handler
|
||
("mcore_elf_relocate_section called for %B section %A, %ld relocations%s",
|
||
input_bfd,
|
||
input_section,
|
||
(long) input_section->reloc_count,
|
||
(info->relocatable) ? " (relocatable)" : "");
|
||
#endif
|
||
|
||
if (info->relocatable)
|
||
return TRUE;
|
||
|
||
if (! mcore_elf_howto_table [R_MCORE_PCRELIMM8BY4]) /* Initialize howto table if needed */
|
||
mcore_elf_howto_init ();
|
||
|
||
for (; rel < relend; rel++)
|
||
{
|
||
enum elf_mcore_reloc_type r_type = (enum elf_mcore_reloc_type) ELF32_R_TYPE (rel->r_info);
|
||
bfd_vma offset = rel->r_offset;
|
||
bfd_vma addend = rel->r_addend;
|
||
bfd_reloc_status_type r = bfd_reloc_other;
|
||
asection * sec = (asection *) 0;
|
||
reloc_howto_type * howto;
|
||
bfd_vma relocation;
|
||
Elf_Internal_Sym * sym = (Elf_Internal_Sym *) 0;
|
||
unsigned long r_symndx;
|
||
struct elf_link_hash_entry * h = (struct elf_link_hash_entry *) 0;
|
||
unsigned short oldinst = 0;
|
||
|
||
/* Unknown relocation handling */
|
||
if ((unsigned) r_type >= (unsigned) R_MCORE_max
|
||
|| ! mcore_elf_howto_table [(int)r_type])
|
||
{
|
||
_bfd_error_handler (_("%B: Unknown relocation type %d\n"),
|
||
input_bfd, (int) r_type);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret = FALSE;
|
||
continue;
|
||
}
|
||
|
||
howto = mcore_elf_howto_table [(int) r_type];
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
|
||
/* Complain about known relocation that are not yet supported. */
|
||
if (howto->special_function == mcore_elf_unsupported_reloc)
|
||
{
|
||
_bfd_error_handler (_("%B: Relocation %s (%d) is not currently supported.\n"),
|
||
input_bfd,
|
||
howto->name,
|
||
(int)r_type);
|
||
|
||
bfd_set_error (bfd_error_bad_value);
|
||
ret = FALSE;
|
||
continue;
|
||
}
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
{
|
||
sym = local_syms + r_symndx;
|
||
sec = local_sections [r_symndx];
|
||
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
|
||
addend = rel->r_addend;
|
||
}
|
||
else
|
||
{
|
||
bfd_boolean unresolved_reloc, warned;
|
||
|
||
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
||
r_symndx, symtab_hdr, sym_hashes,
|
||
h, sec, relocation,
|
||
unresolved_reloc, warned);
|
||
}
|
||
|
||
switch (r_type)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case R_MCORE_PCRELJSR_IMM11BY2:
|
||
oldinst = bfd_get_16 (input_bfd, contents + offset);
|
||
#define MCORE_INST_BSR 0xF800
|
||
bfd_put_16 (input_bfd, (bfd_vma) MCORE_INST_BSR, contents + offset);
|
||
break;
|
||
}
|
||
|
||
#ifdef DEBUG
|
||
fprintf (stderr, "\ttype = %s (%d), symbol index = %ld, offset = %ld, addend = %ld\n",
|
||
howto->name, r_type, r_symndx, (long) offset, (long) addend);
|
||
#endif
|
||
|
||
r = _bfd_final_link_relocate
|
||
(howto, input_bfd, input_section, contents, offset, relocation, addend);
|
||
|
||
if (r != bfd_reloc_ok && r_type == R_MCORE_PCRELJSR_IMM11BY2)
|
||
{
|
||
/* Wasn't ok, back it out and give up. */
|
||
bfd_put_16 (input_bfd, (bfd_vma) oldinst, contents + offset);
|
||
r = bfd_reloc_ok;
|
||
}
|
||
|
||
if (r != bfd_reloc_ok)
|
||
{
|
||
ret = FALSE;
|
||
|
||
switch (r)
|
||
{
|
||
default:
|
||
break;
|
||
|
||
case bfd_reloc_overflow:
|
||
{
|
||
const char * name;
|
||
|
||
if (h != NULL)
|
||
name = h->root.root.string;
|
||
else
|
||
{
|
||
name = bfd_elf_string_from_elf_section
|
||
(input_bfd, symtab_hdr->sh_link, sym->st_name);
|
||
|
||
if (name == NULL)
|
||
break;
|
||
|
||
if (* name == '\0')
|
||
name = bfd_section_name (input_bfd, sec);
|
||
}
|
||
|
||
(*info->callbacks->reloc_overflow)
|
||
(info, name, howto->name, (bfd_vma) 0, input_bfd, input_section,
|
||
offset);
|
||
}
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
|
||
#ifdef DEBUG
|
||
fprintf (stderr, "\n");
|
||
#endif
|
||
|
||
return ret;
|
||
}
|
||
|
||
/* Return the section that should be marked against GC for a given
|
||
relocation. */
|
||
|
||
static asection *
|
||
mcore_elf_gc_mark_hook (sec, info, rel, h, sym)
|
||
asection * sec;
|
||
struct bfd_link_info * info ATTRIBUTE_UNUSED;
|
||
Elf_Internal_Rela * rel;
|
||
struct elf_link_hash_entry * h;
|
||
Elf_Internal_Sym * sym;
|
||
{
|
||
if (h != NULL)
|
||
{
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
case R_MCORE_GNU_VTINHERIT:
|
||
case R_MCORE_GNU_VTENTRY:
|
||
break;
|
||
|
||
default:
|
||
switch (h->root.type)
|
||
{
|
||
case bfd_link_hash_defined:
|
||
case bfd_link_hash_defweak:
|
||
return h->root.u.def.section;
|
||
|
||
case bfd_link_hash_common:
|
||
return h->root.u.c.p->section;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
else
|
||
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
|
||
|
||
return NULL;
|
||
}
|
||
|
||
/* Update the got entry reference counts for the section being removed. */
|
||
|
||
static bfd_boolean
|
||
mcore_elf_gc_sweep_hook (abfd, info, sec, relocs)
|
||
bfd * abfd ATTRIBUTE_UNUSED;
|
||
struct bfd_link_info * info ATTRIBUTE_UNUSED;
|
||
asection * sec ATTRIBUTE_UNUSED;
|
||
const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED;
|
||
{
|
||
return TRUE;
|
||
}
|
||
|
||
/* Look through the relocs for a section during the first phase.
|
||
Since we don't do .gots or .plts, we just need to consider the
|
||
virtual table relocs for gc. */
|
||
|
||
static bfd_boolean
|
||
mcore_elf_check_relocs (abfd, info, sec, relocs)
|
||
bfd * abfd;
|
||
struct bfd_link_info * info;
|
||
asection * sec;
|
||
const Elf_Internal_Rela * relocs;
|
||
{
|
||
Elf_Internal_Shdr * symtab_hdr;
|
||
struct elf_link_hash_entry ** sym_hashes;
|
||
struct elf_link_hash_entry ** sym_hashes_end;
|
||
const Elf_Internal_Rela * rel;
|
||
const Elf_Internal_Rela * rel_end;
|
||
|
||
if (info->relocatable)
|
||
return TRUE;
|
||
|
||
symtab_hdr = & elf_tdata (abfd)->symtab_hdr;
|
||
sym_hashes = elf_sym_hashes (abfd);
|
||
sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
|
||
if (!elf_bad_symtab (abfd))
|
||
sym_hashes_end -= symtab_hdr->sh_info;
|
||
|
||
rel_end = relocs + sec->reloc_count;
|
||
|
||
for (rel = relocs; rel < rel_end; rel++)
|
||
{
|
||
struct elf_link_hash_entry * h;
|
||
unsigned long r_symndx;
|
||
|
||
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
|
||
if (r_symndx < symtab_hdr->sh_info)
|
||
h = NULL;
|
||
else
|
||
h = sym_hashes [r_symndx - symtab_hdr->sh_info];
|
||
|
||
switch (ELF32_R_TYPE (rel->r_info))
|
||
{
|
||
/* This relocation describes the C++ object vtable hierarchy.
|
||
Reconstruct it for later use during GC. */
|
||
case R_MCORE_GNU_VTINHERIT:
|
||
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
|
||
return FALSE;
|
||
break;
|
||
|
||
/* This relocation describes which C++ vtable entries are actually
|
||
used. Record for later use during GC. */
|
||
case R_MCORE_GNU_VTENTRY:
|
||
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
|
||
return FALSE;
|
||
break;
|
||
}
|
||
}
|
||
|
||
return TRUE;
|
||
}
|
||
|
||
static struct bfd_elf_special_section const mcore_elf_special_sections[]=
|
||
{
|
||
{ ".ctors", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ ".dtors", 6, -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
|
||
{ NULL, 0, 0, 0, 0 }
|
||
};
|
||
|
||
#define TARGET_BIG_SYM bfd_elf32_mcore_big_vec
|
||
#define TARGET_BIG_NAME "elf32-mcore-big"
|
||
#define TARGET_LITTLE_SYM bfd_elf32_mcore_little_vec
|
||
#define TARGET_LITTLE_NAME "elf32-mcore-little"
|
||
|
||
#define ELF_ARCH bfd_arch_mcore
|
||
#define ELF_MACHINE_CODE EM_MCORE
|
||
#define ELF_MAXPAGESIZE 0x1000 /* 4k, if we ever have 'em */
|
||
#define elf_info_to_howto mcore_elf_info_to_howto
|
||
#define elf_info_to_howto_rel NULL
|
||
|
||
#define bfd_elf32_bfd_merge_private_bfd_data mcore_elf_merge_private_bfd_data
|
||
#define bfd_elf32_bfd_set_private_flags mcore_elf_set_private_flags
|
||
#define bfd_elf32_bfd_reloc_type_lookup mcore_elf_reloc_type_lookup
|
||
#define elf_backend_relocate_section mcore_elf_relocate_section
|
||
#define elf_backend_gc_mark_hook mcore_elf_gc_mark_hook
|
||
#define elf_backend_gc_sweep_hook mcore_elf_gc_sweep_hook
|
||
#define elf_backend_check_relocs mcore_elf_check_relocs
|
||
#define elf_backend_special_sections mcore_elf_special_sections
|
||
|
||
#define elf_backend_can_gc_sections 1
|
||
#define elf_backend_rela_normal 1
|
||
|
||
#include "elf32-target.h"
|