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eea6121ac0
* section.c (struct sec): Rename "_cooked_size" to "size". Rename "_raw_size" to "rawsize". (STD_SECTION): Adjust comments. (bfd_set_section_size, bfd_get_section_contents): Use size. (bfd_malloc_and_get_section): New function. * bfd-in.h (bfd_section_size, bfd_get_section_size): Use size. * coff-sh.c (sh_relax_section): Alloc coff_section_data struct early. Correctly free reloc and contents memory. * elf-eh-frame.c (_bfd_elf_discard_section_eh_frame): Delete FIXME and fake CIE now that we can shink section size to zero. (_bfd_elf_write_section_eh_frame): Likewise.. * elf32-ppc.c (ppc_elf_relax_section): Delay reading section contents. * elf-m10300.c (mn10300_elf_final_link_relocate): Don't use _bfd_stab_section_offset. Use _bfd_elf_section_offset. * stabs.c (_bfd_stab_section_offset_): Remove unused args and unneeded indirection. * elf.c (_bfd_elf_section_offset): .. and update call. * libbfd-in.h (_bfd_stab_section_offset): Update prototype. * libbfd.h: Regenerate. * bfd-in2.h: Regenerate. Replace occurrences of "_raw_size" and "_cooked_size" in most places with "size". Set new "rawsize" for stabs, eh_frame, and SEC_MERGE sections. Use "rawsize", if non-zero, for bfd_get_section_contents calls if the section might be a stabs, eh_frame, or SEC_MERGE section. Similarly use "rawsize", if non-zero, in reloc functions to validate reloc addresses. Use new bfd_malloc_and_get_section in most places where bfd_get_section_contents was called. Expand all occurrences of bfd_section_size and bfd_get_section_size. Rename "raw_size" var in grok_prstatus and similar functions to "size". * aix386-core.c (aix386_core_file_p): .. * aix5ppc-core.c (xcoff64_core_p): .. * aout-adobe.c (aout_adobe_callback, aout_adobe_write_object_contents, aout_adobe_set_section_contents): .. * aout-target.h (callback): .. * aout-tic30.c (tic30_aout_callback, tic30_aout_final_link_relocate, MY_bfd_final_link): .. * aoutf1.h (sunos4_core_file_p): .. * aoutx.h (some_aout_object_p, adjust_o_magic, adjust_z_magic, adjust_n_magic, adjust_sizes_and_vmas, translate_from_native_sym_flags, final_link, aout_link_input_section): .. * binary.c (binary_object_p, binary_canonicalize_symtab, binary_set_section_contents): .. * bout.c (b_out_callback, b_out_write_object_contents, b_out_set_section_contents, b_out_bfd_relax_section, b_out_bfd_get_relocated_section_contents): .. * cisco-core.c (cisco_core_file_validate): .. * coff-alpha.c (alpha_ecoff_object_p, alpha_ecoff_get_relocated_section_conten, alpha_relocate_section): .. * coff-arm.c (coff_arm_relocate_section, bfd_arm_allocate_interworking_sections): .. * coff-h8300.c (h8300_reloc16_extra_cases, h8300_bfd_link_add_symbols): .. * coff-mips.c (mips_refhi_reloc, mips_gprel_reloc): .. * coff-ppc.c (coff_ppc_relocate_section, ppc_allocate_toc_section, ppc_bfd_coff_final_link): .. * coff-rs6000.c (xcoff_reloc_type_br, xcoff_ppc_relocate_section): .. * coff-sh.c (sh_relax_section, sh_relax_delete_bytes, sh_align_loads, sh_coff_get_relocated_section_contents): .. * coff64-rs6000.c (xcoff64_write_object_contents, xcoff64_reloc_type_br, xcoff64_ppc_relocate_section): .. * coffcode.h (coff_compute_section_file_positions, coff_write_object_contents): .. * coffgen.c (make_a_section_from_file, coff_write_symbols, coff_section_symbol, build_debug_section): .. * cofflink.c (coff_link_add_symbols, _bfd_coff_final_link, process_embedded_commands, _bfd_coff_link_input_bfd, _bfd_coff_write_global_sym): .. * cpu-arm.c (bfd_arm_update_notes, bfd_arm_get_mach_from_notes): .. * cpu-ns32k.c (do_ns32k_reloc, _bfd_ns32k_final_link_relocate): .. * dwarf1.c (parse_line_table, _bfd_dwarf1_find_nearest_line): .. * dwarf2.c (read_indirect_string, read_abbrevs, decode_line_info, _bfd_dwarf2_find_nearest_line): .. * ecoff.c (bfd_debug_section, ecoff_set_symbol_info, ecoff_compute_section_file_positions, _bfd_ecoff_write_object_contents, ecoff_indirect_link_order): .. * elf-eh-frame.c (_bfd_elf_discard_section_eh_frame, _bfd_elf_discard_section_eh_frame_hdr, _bfd_elf_maybe_strip_eh_frame_hdr, _bfd_elf_eh_frame_section_offset, _bfd_elf_write_section_eh_frame, _bfd_elf_write_section_eh_frame_hdr): .. * elf-hppa.h (elf_hppa_sort_unwind): .. * elf-m10200.c (mn10200_elf_relax_section, mn10200_elf_relax_delete_bytes, mn10200_elf_get_relocated_section_contents): .. * elf-m10300.c (_bfd_mn10300_elf_create_got_section, mn10300_elf_check_relocs, mn10300_elf_relax_section, mn10300_elf_relax_delete_bytes, mn10300_elf_get_relocated_section_contents, _bfd_mn10300_elf_adjust_dynamic_symbol, _bfd_mn10300_elf_discard_copies, _bfd_mn10300_elf_size_dynamic_sections, _bfd_mn10300_elf_finish_dynamic_sections): .. * elf.c (_bfd_elf_print_private_bfd_data, bfd_elf_get_bfd_needed_list, _bfd_elf_make_section_from_phdr, elf_fake_sections, bfd_elf_set_group_contents, map_sections_to_segments, elf_sort_sections, assign_file_positions_for_segments, SECTION_SIZE, copy_private_bfd_data, _bfd_elf_get_dynamic_reloc_upper_bound, _bfd_elf_canonicalize_dynamic_reloc, elfcore_maybe_make_sect, _bfd_elfcore_make_pseudosection, elfcore_grok_prstatus, elfcore_grok_lwpstatus, elfcore_grok_win32pstatus, elfcore_grok_note, elfcore_grok_nto_status, elfcore_grok_nto_gregs, _bfd_elf_rel_local_sym, _bfd_elf_get_synthetic_symtab): .. * elf32-arm.h (bfd_elf32_arm_allocate_interworking_sect, bfd_elf32_arm_process_before_allocation, elf32_arm_adjust_dynamic_symbol, allocate_dynrelocs, elf32_arm_size_dynamic_sections, elf32_arm_finish_dynamic_sections, elf32_arm_write_section): .. * elf32-cris.c (cris_elf_grok_prstatus, elf_cris_finish_dynamic_sections, cris_elf_gc_sweep_hook, elf_cris_adjust_gotplt_to_got, elf_cris_adjust_dynamic_symbol, cris_elf_check_relocs, elf_cris_size_dynamic_sections, elf_cris_discard_excess_dso_dynamics, elf_cris_discard_excess_program_dynamics): .. * elf32-d30v.c (bfd_elf_d30v_reloc, bfd_elf_d30v_reloc_21): .. * elf32-dlx.c (_bfd_dlx_elf_hi16_reloc): .. * elf32-frv.c (_frvfdpic_add_dyn_reloc, _frvfdpic_add_rofixup, _frv_create_got_section, _frvfdpic_assign_plt_entries, elf32_frvfdpic_size_dynamic_sections, elf32_frvfdpic_modify_segment_map, elf32_frvfdpic_finish_dynamic_sections): .. * elf32-h8300.c (elf32_h8_relax_section, elf32_h8_relax_delete_bytes, elf32_h8_get_relocated_section_contents): .. * elf32-hppa.c (hppa_build_one_stub, hppa_size_one_stub, elf32_hppa_adjust_dynamic_symbol, allocate_plt_static, allocate_dynrelocs, elf32_hppa_size_dynamic_sections, group_sections, elf32_hppa_size_stubs, elf32_hppa_set_gp, elf32_hppa_build_stubs, elf32_hppa_finish_dynamic_sections): .. * elf32-i370.c (i370_elf_adjust_dynamic_symbol, i370_elf_size_dynamic_sections, i370_elf_check_relocs, i370_elf_finish_dynamic_sections): .. * elf32-i386.c (elf_i386_grok_prstatus, elf_i386_adjust_dynamic_symbol, allocate_dynrelocs, elf_i386_size_dynamic_sections, elf_i386_relocate_section, elf_i386_finish_dynamic_sections): .. * elf32-i860.c (i860_howto_pc26_reloc, i860_howto_pc16_reloc, i860_howto_highadj_reloc, i860_howto_splitn_reloc): .. * elf32-ip2k.c (ip2k_is_switch_table_128, ip2k_relax_switch_table_128, ip2k_is_switch_table_256, ip2k_relax_switch_table_256, ip2k_elf_relax_section, adjust_all_relocations, ip2k_elf_relax_delete_bytes): .. * elf32-m32r.c (m32r_elf_do_10_pcrel_reloc, m32r_elf_hi16_reloc, m32r_elf_generic_reloc, m32r_elf_adjust_dynamic_symbol, allocate_dynrelocs, m32r_elf_size_dynamic_sections, m32r_elf_relocate_section, m32r_elf_finish_dynamic_sections, m32r_elf_relax_section, m32r_elf_relax_delete_bytes, m32r_elf_get_relocated_section_contents): .. * elf32-m68hc11.c (m68hc11_elf_build_one_stub, m68hc11_elf_size_one_stub, m68hc11_elf_relax_section, m68hc11_elf_relax_delete_bytes): .. * elf32-m68hc12.c (m68hc12_elf_build_one_stub, m68hc12_elf_size_one_stub): .. * elf32-m68hc1x.c (elf32_m68hc11_size_stubs, elf32_m68hc11_build_stubs, m68hc11_elf_special_reloc): .. * elf32-m68k.c (elf_m68k_check_relocs, elf_m68k_gc_sweep_hook, elf_m68k_adjust_dynamic_symbol, elf_m68k_size_dynamic_sections, elf_m68k_discard_copies, elf_m68k_finish_dynamic_sections): .. * elf32-mips.c (gprel32_with_gp, mips16_gprel_reloc, elf32_mips_grok_prstatus): .. * elf32-or32.c (or32_elf_consth_reloc): .. * elf32-ppc.c (ppc_elf_relax_section, ppc_elf_addr16_ha_reloc, elf_create_pointer_linker_section, ppc_elf_create_linker_section, ppc_elf_additional_program_headers, ppc_elf_adjust_dynamic_symbol, allocate_dynrelocs, ppc_elf_size_dynamic_sections, ppc_elf_finish_dynamic_sections, ppc_elf_grok_prstatus, ppc_elf_final_write_processing): .. * elf32-s390.c (s390_elf_ldisp_reloc, elf_s390_adjust_dynamic_symbol, allocate_dynrelocs, elf_s390_size_dynamic_sections, elf_s390_finish_dynamic_sections, elf_s390_grok_prstatus): .. * elf32-sh.c (sh_elf_reloc_loop, sh_elf_relax_section, sh_elf_relax_delete_bytes, sh_elf_align_loads, sh_elf_adjust_dynamic_symbol, allocate_dynrelocs, sh_elf_size_dynamic_sections, sh_elf_get_relocated_section_contents, sh_elf_finish_dynamic_sections, elf32_shlin_grok_prstatus): .. * elf32-sh64-com.c (sh64_address_in_cranges, sh64_get_contents_type): .. * elf32-sh64.c (sh64_find_section_for_address, sh64_elf_final_write_processing): .. * elf32-sparc.c (sparc_elf_wdisp16_reloc, sparc_elf_hix22_reloc, sparc_elf_lox10_reloc, elf32_sparc_adjust_dynamic_symbol, allocate_dynrelocs, elf32_sparc_size_dynamic_sections, elf32_sparc_relocate_section, elf32_sparc_finish_dynamic_sections): .. * elf32-v850.c (v850_elf_reloc, v850_elf_relax_section): .. * elf32-vax.c (elf_vax_check_relocs, elf_vax_adjust_dynamic_symbol, elf_vax_size_dynamic_sections, elf_vax_discard_copies, elf_vax_instantiate_got_entries, elf_vax_relocate_section, elf_vax_finish_dynamic_sections): .. * elf32-xstormy16.c (xstormy16_elf_24_reloc, xstormy16_elf_check_relocs, xstormy16_relax_plt_check, xstormy16_elf_relax_section, xstormy16_elf_always_size_sections, xstormy16_elf_finish_dynamic_sections): .. * elf32-xtensa.c (xtensa_read_table_entries, elf_xtensa_allocate_got_size, elf_xtensa_allocate_local_got_size, elf_xtensa_size_dynamic_sections, elf_xtensa_do_reloc, bfd_elf_xtensa_reloc, elf_xtensa_relocate_section, elf_xtensa_combine_prop_entries, elf_xtensa_finish_dynamic_sections, elf_xtensa_discard_info_for_section, elf_xtensa_grok_prstatus, get_relocation_opcode, retrieve_contents, find_relaxable_sections, collect_source_relocs, is_resolvable_asm_expansion, remove_literals, relax_section, shrink_dynamic_reloc_sections, relax_property_section, xtensa_callback_required_dependence): .. * elf64-alpha.c (elf64_alpha_reloc_gpdisp, elf64_alpha_relax_section, elf64_alpha_check_relocs, elf64_alpha_adjust_dynamic_symbol, elf64_alpha_calc_got_offsets_for_symbol, elf64_alpha_calc_got_offsets, elf64_alpha_size_plt_section, elf64_alpha_size_plt_section_1, elf64_alpha_always_size_sections, elf64_alpha_calc_dynrel_sizes, elf64_alpha_size_rela_got_section, elf64_alpha_size_rela_got_1, elf64_alpha_size_dynamic_sections, elf64_alpha_emit_dynrel, elf64_alpha_finish_dynamic_sections, elf64_alpha_final_link): .. * elf64-hppa.c (allocate_dynrel_entries, elf64_hppa_size_dynamic_sections, elf64_hppa_finish_dynamic_sections): .. * elf64-mips.c (mips_elf64_gprel32_reloc, mips16_gprel_reloc, mips_elf64_canonicalize_dynamic_reloc, mips_elf64_slurp_reloc_table, elf64_mips_grok_prstatus): .. * elf64-mmix.c (mmix_elf_perform_relocation, mmix_elf_reloc, mmix_elf_relocate_section, mmix_elf_final_link, mmix_set_relaxable_size, _bfd_mmix_after_linker_allocation, mmix_elf_relax_section, mmix_elf_get_section_contents): .. * elf64-ppc.c (ppc64_elf_object_p, ppc64_elf_grok_prstatus, ppc64_elf_check_relocs, ppc64_elf_func_desc_adjust, ppc64_elf_adjust_dynamic_symbol, ppc64_elf_edit_opd, allocate_dynrelocs, ppc64_elf_size_dynamic_sections, ppc_build_one_stub, ppc_size_one_stub, ppc64_elf_next_toc_section, toc_adjusting_stub_needed, group_sections, ppc64_elf_size_stubs, ppc64_elf_build_stubs, ppc64_elf_relocate_section, ppc64_elf_finish_dynamic_sections): .. * elf64-s390.c (s390_elf_ldisp_reloc, elf_s390_adjust_dynamic_symbol, allocate_dynrelocs, elf_s390_size_dynamic_sections, elf_s390_finish_dynamic_sections): .. * elf64-sh64.c (sh_elf64_get_relocated_section_contents, sh_elf64_check_relocs, sh64_elf64_adjust_dynamic_symbol, sh64_elf64_discard_copies, sh64_elf64_size_dynamic_sections, sh64_elf64_finish_dynamic_sections): .. * elf64-sparc.c (sparc64_elf_slurp_reloc_table, init_insn_reloc, sparc64_elf_check_relocs, sparc64_elf_adjust_dynamic_symbol, sparc64_elf_size_dynamic_sections, sparc64_elf_relocate_section, sparc64_elf_finish_dynamic_symbol, sparc64_elf_finish_dynamic_sections): .. * elf64-x86-64.c (elf64_x86_64_grok_prstatus, elf64_x86_64_adjust_dynamic_symbol, allocate_dynrelocs, elf64_x86_64_size_dynamic_sections, elf64_x86_64_relocate_section, elf64_x86_64_finish_dynamic_sections): .. * elfarm-nabi.c (elf32_arm_nabi_grok_prstatus): .. * elfcode.h (elf_slurp_reloc_table): .. * elflink.c (_bfd_elf_create_got_section, elf_add_dt_needed_tag, elf_finalize_dynstr, elf_link_add_object_symbols, bfd_elf_size_dynamic_sections, elf_link_sort_relocs, elf_link_input_bfd, bfd_elf_final_link, bfd_elf_discard_info): .. * elfn32-mips.c (gprel32_with_gp, mips16_gprel_reloc, elf32_mips_grok_prstatus): .. * elfxx-ia64.c (elfNN_ia64_relax_section, allocate_dynrel_entries, elfNN_ia64_size_dynamic_sections, elfNN_ia64_install_dyn_reloc, elfNN_ia64_choose_gp, elfNN_ia64_final_link, elfNN_ia64_finish_dynamic_sections): .. * elfxx-mips.c (mips_elf_create_procedure_table, mips_elf_check_mips16_stubs, _bfd_mips_elf_gprel16_with_gp, _bfd_mips_elf_hi16_reloc, _bfd_mips_elf_generic_reloc, mips_elf_global_got_index, mips_elf_multi_got, mips_elf_create_compact_rel_section, mips_elf_calculate_relocation, mips_elf_allocate_dynamic_relocations, mips_elf_create_dynamic_relocation, _bfd_mips_elf_fake_sections, _bfd_mips_relax_section, _bfd_mips_elf_adjust_dynamic_symbol, _bfd_mips_elf_always_size_sections, _bfd_mips_elf_size_dynamic_sections, _bfd_mips_elf_finish_dynamic_symbol, _bfd_mips_elf_finish_dynamic_sections, _bfd_mips_elf_modify_segment_map, _bfd_mips_elf_discard_info, _bfd_mips_elf_write_section, _bfd_mips_elf_set_section_contents, _bfd_elf_mips_get_relocated_section_contents, _bfd_mips_elf_final_link, _bfd_mips_elf_merge_private_bfd_data): .. * hp300hpux.c (callback): .. * hppabsd-core.c (make_bfd_asection): .. * hpux-core.c (make_bfd_asection): .. * i386linux.c (linux_link_create_dynamic_sections, bfd_i386linux_size_dynamic_sections, linux_finish_dynamic_link): .. * i386msdos.c (msdos_write_object_contents): .. * i386os9k.c (os9k_callback, os9k_write_object_contents, os9k_set_section_contents): .. * ieee.c (parse_expression, ieee_slurp_external_symbols, ieee_slurp_sections, ieee_slurp_debug, ieee_slurp_section_data, ieee_write_section_part, do_with_relocs, do_as_repeat, do_without_relocs, ieee_write_debug_part, init_for_output, ieee_set_section_contents): .. * ihex.c (ihex_scan, ihex_read_section, ihex_get_section_contents): .. * irix-core.c (do_sections, make_bfd_asection): .. * libaout.h (aout_section_merge_with_text_p): .. * libbfd.c (_bfd_generic_get_section_contents, _bfd_generic_get_section_contents_in_window): .. * linker.c (default_indirect_link_order): .. * lynx-core.c (make_bfd_asection): .. * m68klinux.c (linux_link_create_dynamic_sections, bfd_m68klinux_size_dynamic_sections, linux_finish_dynamic_link): .. * mach-o.c (bfd_mach_o_make_bfd_section, bfd_mach_o_scan_read_dylinker, bfd_mach_o_scan_read_dylib, bfd_mach_o_scan_read_thread, bfd_mach_o_scan_read_symtab, bfd_mach_o_scan_read_segment): .. * merge.c (_bfd_add_merge_section, record_section, merge_strings, _bfd_merge_sections): .. * mmo.c (mmo_find_sec_w_addr, mmo_get_spec_section, mmo_get_loc, mmo_map_set_sizes, mmo_canonicalize_symtab, mmo_internal_write_section, mmo_write_object_contents): .. * netbsd-core.c (netbsd_core_file_p): .. * nlm32-alpha.c (nlm_alpha_read_reloc, nlm_alpha_write_import, nlm_alpha_set_public_section): .. * nlm32-ppc.c (nlm_powerpc_read_reloc, nlm_powerpc_write_reloc): .. * nlm32-sparc.c (nlm_sparc_write_import): .. * nlmcode.h (add_bfd_section, nlm_swap_auxiliary_headers_in, nlm_compute_section_file_positions): .. * oasys.c (oasys_object_p, oasys_slurp_section_data, oasys_write_sections, oasys_write_data, oasys_set_section_contents): .. * opncls.c (get_debug_link_info): .. * osf-core.c (make_bfd_asection): .. * pdp11.c (some_aout_object_p, adjust_o_magic, adjust_z_magic, adjust_n_magic, adjust_sizes_and_vmas, squirt_out_relocs, final_link, aout_link_input_section): .. * peXXigen.c (_bfd_XXi_swap_sym_in, _bfd_XXi_swap_aouthdr_out, pe_print_idata, pe_print_edata, pe_print_pdata, pe_print_reloc): .. * pef.c (bfd_pef_make_bfd_section, bfd_pef_print_loader_section, bfd_pef_scan_start_address, bfd_pef_parse_symbols): .. * ppcboot.c (ppcboot_object_p, ppcboot_canonicalize_symtab): .. * ptrace-core.c (ptrace_unix_core_file_p): .. * reloc.c (bfd_perform_relocation, bfd_install_relocation, _bfd_final_link_relocate, bfd_generic_relax_section, bfd_generic_get_relocated_section_contents): .. * reloc16.c (bfd_coff_reloc16_relax_section, bfd_coff_reloc16_get_relocated_section_c): .. * riscix.c (riscix_some_aout_object_p): .. * rs6000-core.c (read_hdr, make_bfd_asection): .. * sco5-core.c (make_bfd_asection): .. * simple.c (bfd_simple_get_relocated_section_contents): .. * som.c (som_object_setup, setup_sections, som_prep_headers, som_write_fixups, som_begin_writing, bfd_section_from_som_symbol, som_set_reloc_info, som_get_section_contents, som_bfd_link_split_section): .. * sparclinux.c (linux_link_create_dynamic_sections, bfd_sparclinux_size_dynamic_sections, linux_finish_dynamic_link): .. * srec.c (srec_scan, srec_read_section, srec_get_section_contents): .. * stabs.c (_bfd_link_section_stabs, _bfd_discard_section_stabs, _bfd_write_stab_strings, _bfd_stab_section_offset): .. * sunos.c (sunos_read_dynamic_info, sunos_create_dynamic_sections, bfd_sunos_size_dynamic_sections, sunos_scan_std_relocs, sunos_scan_ext_relocs, sunos_scan_dynamic_symbol, sunos_write_dynamic_symbol, sunos_check_dynamic_reloc, sunos_finish_dynamic_link): .. * syms.c (_bfd_stab_section_find_nearest_line): .. * tekhex.c (first_phase, tekhex_set_section_contents, tekhex_write_object_contents): .. * trad-core.c (trad_unix_core_file_p): .. * versados.c (process_esd, process_otr, process_otr): .. * vms-gsd.c (_bfd_vms_slurp_gsd, _bfd_vms_write_gsd): .. * vms-misc.c (add_new_contents): .. * vms-tir.c (check_section, new_section, _bfd_vms_write_tir): .. * vms.c (vms_set_section_contents): .. * xcofflink.c (xcoff_get_section_contents, xcoff_link_add_symbols, xcoff_sweep, bfd_xcoff_size_dynamic_sections, xcoff_build_ldsyms, _bfd_xcoff_bfd_final_link, xcoff_link_input_bfd): .. * xsym.c (bfd_sym_scan): .. See above. binutils/ * objcopy.c (copy_section): Don't set _cooked_size. include/ * bfdlink.h (struct bfd_link_order): Update comment. ld/ * ldlang.c (print_output_section_statement): Don't print size before relaxation. (IGNORE_SECTION): Remove bfd arg. Update all callers. * ldexp.c (fold_name): .. See below. * ldlang.c (section_already_linked, print_output_section_statement, print_input_section, insert_pad, size_input_section, lang_check_section_addresses, lang_size_sections_1, lang_size_sections, lang_do_assignments_1, lang_set_startof, lang_one_common, lang_reset_memory_regions, lang_process, lang_abs_symbol_at_end_of, lang_do_version_exports_section): .. * ldwrite.c (build_link_order, clone_section, ds, split_sections): .. * pe-dll.c (process_def_file, generate_reloc): .. * emultempl/elf32.em (gld${EMULATION_NAME}_find_statement_assignment, gld${EMULATION_NAME}_before_allocation): .. * emultempl/mmix-elfnmmo.em (mmix_after_allocation): .. * emultempl/sh64elf.em (sh64_elf_${EMULATION_NAME}_before_allocation, sh64_elf_${EMULATION_NAME}_after_allocation): .. * emultempl/sunos.em (gld${EMULATION_NAME}_before_allocation): .. * emultempl/xtensaelf.em (ld_assign_relative_paged_dot, ld_local_file_relocations_fit, ld_xtensa_insert_page_offsets): Use "size" instead of "_raw_size" and "_cooked_size". Expand bfd_section_size macro invocations.
1199 lines
33 KiB
C
1199 lines
33 KiB
C
/* .eh_frame section optimization.
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Copyright 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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Written by Jakub Jelinek <jakub@redhat.com>.
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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 "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/dwarf2.h"
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#define EH_FRAME_HDR_SIZE 8
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|
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/* Helper function for reading uleb128 encoded data. */
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|
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static bfd_vma
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read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
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|
char *buf,
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|
unsigned int *bytes_read_ptr)
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|
{
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|
bfd_vma result;
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unsigned int num_read;
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|
int shift;
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|
unsigned char byte;
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|
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result = 0;
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shift = 0;
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num_read = 0;
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|
do
|
|
{
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|
byte = bfd_get_8 (abfd, (bfd_byte *) buf);
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|
buf++;
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num_read++;
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result |= (((bfd_vma) byte & 0x7f) << shift);
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shift += 7;
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|
}
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|
while (byte & 0x80);
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*bytes_read_ptr = num_read;
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return result;
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|
}
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|
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/* Helper function for reading sleb128 encoded data. */
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|
|
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static bfd_signed_vma
|
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read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
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|
char *buf,
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|
unsigned int * bytes_read_ptr)
|
|
{
|
|
bfd_vma result;
|
|
int shift;
|
|
int num_read;
|
|
unsigned char byte;
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|
|
|
result = 0;
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|
shift = 0;
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|
num_read = 0;
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|
do
|
|
{
|
|
byte = bfd_get_8 (abfd, (bfd_byte *) buf);
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|
buf ++;
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|
num_read ++;
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result |= (((bfd_vma) byte & 0x7f) << shift);
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|
shift += 7;
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|
}
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|
while (byte & 0x80);
|
|
if (byte & 0x40)
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result |= (((bfd_vma) -1) << (shift - 7)) << 7;
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|
*bytes_read_ptr = num_read;
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|
return result;
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|
}
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|
|
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#define read_uleb128(VAR, BUF) \
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do \
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|
{ \
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(VAR) = read_unsigned_leb128 (abfd, buf, &leb128_tmp); \
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(BUF) += leb128_tmp; \
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|
} \
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while (0)
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#define read_sleb128(VAR, BUF) \
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|
do \
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|
{ \
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(VAR) = read_signed_leb128 (abfd, buf, &leb128_tmp); \
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(BUF) += leb128_tmp; \
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} \
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while (0)
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/* Return 0 if either encoding is variable width, or not yet known to bfd. */
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|
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static
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int get_DW_EH_PE_width (int encoding, int ptr_size)
|
|
{
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|
/* DW_EH_PE_ values of 0x60 and 0x70 weren't defined at the time .eh_frame
|
|
was added to bfd. */
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|
if ((encoding & 0x60) == 0x60)
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return 0;
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|
|
|
switch (encoding & 7)
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{
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|
case DW_EH_PE_udata2: return 2;
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case DW_EH_PE_udata4: return 4;
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|
case DW_EH_PE_udata8: return 8;
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case DW_EH_PE_absptr: return ptr_size;
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|
default:
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|
break;
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|
}
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|
|
return 0;
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}
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|
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#define get_DW_EH_PE_signed(encoding) (((encoding) & DW_EH_PE_signed) != 0)
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|
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/* Read a width sized value from memory. */
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static bfd_vma
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read_value (bfd *abfd, bfd_byte *buf, int width, int is_signed)
|
|
{
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|
bfd_vma value;
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|
|
|
switch (width)
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|
{
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|
case 2:
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|
if (is_signed)
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|
value = bfd_get_signed_16 (abfd, buf);
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|
else
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|
value = bfd_get_16 (abfd, buf);
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|
break;
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|
case 4:
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|
if (is_signed)
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|
value = bfd_get_signed_32 (abfd, buf);
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|
else
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|
value = bfd_get_32 (abfd, buf);
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|
break;
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|
case 8:
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|
if (is_signed)
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|
value = bfd_get_signed_64 (abfd, buf);
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|
else
|
|
value = bfd_get_64 (abfd, buf);
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|
break;
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|
default:
|
|
BFD_FAIL ();
|
|
return 0;
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|
}
|
|
|
|
return value;
|
|
}
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|
|
|
/* Store a width sized value to memory. */
|
|
|
|
static void
|
|
write_value (bfd *abfd, bfd_byte *buf, bfd_vma value, int width)
|
|
{
|
|
switch (width)
|
|
{
|
|
case 2: bfd_put_16 (abfd, value, buf); break;
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|
case 4: bfd_put_32 (abfd, value, buf); break;
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|
case 8: bfd_put_64 (abfd, value, buf); break;
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|
default: BFD_FAIL ();
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|
}
|
|
}
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|
|
|
/* Return zero if C1 and C2 CIEs can be merged. */
|
|
|
|
static
|
|
int cie_compare (struct cie *c1, struct cie *c2)
|
|
{
|
|
if (c1->hdr.length == c2->hdr.length
|
|
&& c1->version == c2->version
|
|
&& strcmp (c1->augmentation, c2->augmentation) == 0
|
|
&& strcmp (c1->augmentation, "eh") != 0
|
|
&& c1->code_align == c2->code_align
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|
&& c1->data_align == c2->data_align
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|
&& c1->ra_column == c2->ra_column
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&& c1->augmentation_size == c2->augmentation_size
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&& c1->personality == c2->personality
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&& c1->per_encoding == c2->per_encoding
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|
&& c1->lsda_encoding == c2->lsda_encoding
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&& c1->fde_encoding == c2->fde_encoding
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&& c1->initial_insn_length == c2->initial_insn_length
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|
&& memcmp (c1->initial_instructions,
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|
c2->initial_instructions,
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|
c1->initial_insn_length) == 0)
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return 0;
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return 1;
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|
}
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|
/* This function is called for each input file before the .eh_frame
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|
section is relocated. It discards duplicate CIEs and FDEs for discarded
|
|
functions. The function returns TRUE iff any entries have been
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|
deleted. */
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bfd_boolean
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_bfd_elf_discard_section_eh_frame
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(bfd *abfd, struct bfd_link_info *info, asection *sec,
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|
bfd_boolean (*reloc_symbol_deleted_p) (bfd_vma, void *),
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|
struct elf_reloc_cookie *cookie)
|
|
{
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|
bfd_byte *ehbuf = NULL, *buf;
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|
bfd_byte *last_cie, *last_fde;
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struct cie_header hdr;
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struct cie cie;
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struct elf_link_hash_table *htab;
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|
struct eh_frame_hdr_info *hdr_info;
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|
struct eh_frame_sec_info *sec_info = NULL;
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|
unsigned int leb128_tmp;
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|
unsigned int cie_usage_count, last_cie_ndx, i, offset;
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|
unsigned int make_relative, make_lsda_relative;
|
|
bfd_size_type new_size;
|
|
unsigned int ptr_size;
|
|
|
|
if (sec->size == 0)
|
|
{
|
|
/* This file does not contain .eh_frame information. */
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|
return FALSE;
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|
}
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|
if ((sec->output_section != NULL
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|
&& bfd_is_abs_section (sec->output_section)))
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|
{
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|
/* At least one of the sections is being discarded from the
|
|
link, so we should just ignore them. */
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|
return FALSE;
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}
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htab = elf_hash_table (info);
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|
hdr_info = &htab->eh_info;
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/* Read the frame unwind information from abfd. */
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|
if (!bfd_malloc_and_get_section (abfd, sec, &ehbuf))
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goto free_no_table;
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|
if (sec->size >= 4
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|
&& bfd_get_32 (abfd, ehbuf) == 0
|
|
&& cookie->rel == cookie->relend)
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|
{
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|
/* Empty .eh_frame section. */
|
|
free (ehbuf);
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|
return FALSE;
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|
}
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|
|
|
/* If .eh_frame section size doesn't fit into int, we cannot handle
|
|
it (it would need to use 64-bit .eh_frame format anyway). */
|
|
if (sec->size != (unsigned int) sec->size)
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|
goto free_no_table;
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|
|
|
ptr_size = (elf_elfheader (abfd)->e_ident[EI_CLASS]
|
|
== ELFCLASS64) ? 8 : 4;
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|
buf = ehbuf;
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|
last_cie = NULL;
|
|
last_cie_ndx = 0;
|
|
memset (&cie, 0, sizeof (cie));
|
|
cie_usage_count = 0;
|
|
new_size = sec->size;
|
|
make_relative = hdr_info->last_cie.make_relative;
|
|
make_lsda_relative = hdr_info->last_cie.make_lsda_relative;
|
|
sec_info = bfd_zmalloc (sizeof (struct eh_frame_sec_info)
|
|
+ 99 * sizeof (struct eh_cie_fde));
|
|
if (sec_info == NULL)
|
|
goto free_no_table;
|
|
|
|
sec_info->alloced = 100;
|
|
|
|
#define ENSURE_NO_RELOCS(buf) \
|
|
if (cookie->rel < cookie->relend \
|
|
&& (cookie->rel->r_offset \
|
|
< (bfd_size_type) ((buf) - ehbuf)) \
|
|
&& cookie->rel->r_info != 0) \
|
|
goto free_no_table
|
|
|
|
#define SKIP_RELOCS(buf) \
|
|
while (cookie->rel < cookie->relend \
|
|
&& (cookie->rel->r_offset \
|
|
< (bfd_size_type) ((buf) - ehbuf))) \
|
|
cookie->rel++
|
|
|
|
#define GET_RELOC(buf) \
|
|
((cookie->rel < cookie->relend \
|
|
&& (cookie->rel->r_offset \
|
|
== (bfd_size_type) ((buf) - ehbuf))) \
|
|
? cookie->rel : NULL)
|
|
|
|
for (;;)
|
|
{
|
|
unsigned char *aug;
|
|
|
|
if (sec_info->count == sec_info->alloced)
|
|
{
|
|
sec_info = bfd_realloc (sec_info,
|
|
sizeof (struct eh_frame_sec_info)
|
|
+ (sec_info->alloced + 99)
|
|
* sizeof (struct eh_cie_fde));
|
|
if (sec_info == NULL)
|
|
goto free_no_table;
|
|
|
|
memset (&sec_info->entry[sec_info->alloced], 0,
|
|
100 * sizeof (struct eh_cie_fde));
|
|
sec_info->alloced += 100;
|
|
}
|
|
|
|
last_fde = buf;
|
|
/* If we are at the end of the section, we still need to decide
|
|
on whether to output or discard last encountered CIE (if any). */
|
|
if ((bfd_size_type) (buf - ehbuf) == sec->size)
|
|
hdr.id = (unsigned int) -1;
|
|
else
|
|
{
|
|
if ((bfd_size_type) (buf + 4 - ehbuf) > sec->size)
|
|
/* No space for CIE/FDE header length. */
|
|
goto free_no_table;
|
|
|
|
hdr.length = bfd_get_32 (abfd, buf);
|
|
if (hdr.length == 0xffffffff)
|
|
/* 64-bit .eh_frame is not supported. */
|
|
goto free_no_table;
|
|
buf += 4;
|
|
if ((bfd_size_type) (buf - ehbuf) + hdr.length > sec->size)
|
|
/* CIE/FDE not contained fully in this .eh_frame input section. */
|
|
goto free_no_table;
|
|
|
|
sec_info->entry[sec_info->count].offset = last_fde - ehbuf;
|
|
sec_info->entry[sec_info->count].size = 4 + hdr.length;
|
|
|
|
if (hdr.length == 0)
|
|
{
|
|
/* CIE with length 0 must be only the last in the section. */
|
|
if ((bfd_size_type) (buf - ehbuf) < sec->size)
|
|
goto free_no_table;
|
|
ENSURE_NO_RELOCS (buf);
|
|
sec_info->count++;
|
|
/* Now just finish last encountered CIE processing and break
|
|
the loop. */
|
|
hdr.id = (unsigned int) -1;
|
|
}
|
|
else
|
|
{
|
|
hdr.id = bfd_get_32 (abfd, buf);
|
|
buf += 4;
|
|
if (hdr.id == (unsigned int) -1)
|
|
goto free_no_table;
|
|
}
|
|
}
|
|
|
|
if (hdr.id == 0 || hdr.id == (unsigned int) -1)
|
|
{
|
|
unsigned int initial_insn_length;
|
|
|
|
/* CIE */
|
|
if (last_cie != NULL)
|
|
{
|
|
/* Now check if this CIE is identical to the last CIE,
|
|
in which case we can remove it provided we adjust
|
|
all FDEs. Also, it can be removed if we have removed
|
|
all FDEs using it. */
|
|
if ((!info->relocatable
|
|
&& hdr_info->last_cie_sec
|
|
&& (sec->output_section
|
|
== hdr_info->last_cie_sec->output_section)
|
|
&& cie_compare (&cie, &hdr_info->last_cie) == 0)
|
|
|| cie_usage_count == 0)
|
|
{
|
|
new_size -= cie.hdr.length + 4;
|
|
sec_info->entry[last_cie_ndx].removed = 1;
|
|
sec_info->entry[last_cie_ndx].sec = hdr_info->last_cie_sec;
|
|
sec_info->entry[last_cie_ndx].new_offset
|
|
= hdr_info->last_cie_offset;
|
|
}
|
|
else
|
|
{
|
|
hdr_info->last_cie = cie;
|
|
hdr_info->last_cie_sec = sec;
|
|
hdr_info->last_cie_offset = last_cie - ehbuf;
|
|
sec_info->entry[last_cie_ndx].make_relative
|
|
= cie.make_relative;
|
|
sec_info->entry[last_cie_ndx].make_lsda_relative
|
|
= cie.make_lsda_relative;
|
|
sec_info->entry[last_cie_ndx].per_encoding_relative
|
|
= (cie.per_encoding & 0x70) == DW_EH_PE_pcrel;
|
|
}
|
|
}
|
|
|
|
if (hdr.id == (unsigned int) -1)
|
|
break;
|
|
|
|
last_cie_ndx = sec_info->count;
|
|
sec_info->entry[sec_info->count].cie = 1;
|
|
|
|
cie_usage_count = 0;
|
|
memset (&cie, 0, sizeof (cie));
|
|
cie.hdr = hdr;
|
|
cie.version = *buf++;
|
|
|
|
/* Cannot handle unknown versions. */
|
|
if (cie.version != 1 && cie.version != 3)
|
|
goto free_no_table;
|
|
if (strlen (buf) > sizeof (cie.augmentation) - 1)
|
|
goto free_no_table;
|
|
|
|
strcpy (cie.augmentation, buf);
|
|
buf = strchr (buf, '\0') + 1;
|
|
ENSURE_NO_RELOCS (buf);
|
|
if (buf[0] == 'e' && buf[1] == 'h')
|
|
{
|
|
/* GCC < 3.0 .eh_frame CIE */
|
|
/* We cannot merge "eh" CIEs because __EXCEPTION_TABLE__
|
|
is private to each CIE, so we don't need it for anything.
|
|
Just skip it. */
|
|
buf += ptr_size;
|
|
SKIP_RELOCS (buf);
|
|
}
|
|
read_uleb128 (cie.code_align, buf);
|
|
read_sleb128 (cie.data_align, buf);
|
|
if (cie.version == 1)
|
|
cie.ra_column = *buf++;
|
|
else
|
|
read_uleb128 (cie.ra_column, buf);
|
|
ENSURE_NO_RELOCS (buf);
|
|
cie.lsda_encoding = DW_EH_PE_omit;
|
|
cie.fde_encoding = DW_EH_PE_omit;
|
|
cie.per_encoding = DW_EH_PE_omit;
|
|
aug = cie.augmentation;
|
|
if (aug[0] != 'e' || aug[1] != 'h')
|
|
{
|
|
if (*aug == 'z')
|
|
{
|
|
aug++;
|
|
read_uleb128 (cie.augmentation_size, buf);
|
|
ENSURE_NO_RELOCS (buf);
|
|
}
|
|
|
|
while (*aug != '\0')
|
|
switch (*aug++)
|
|
{
|
|
case 'L':
|
|
cie.lsda_encoding = *buf++;
|
|
ENSURE_NO_RELOCS (buf);
|
|
if (get_DW_EH_PE_width (cie.lsda_encoding, ptr_size) == 0)
|
|
goto free_no_table;
|
|
break;
|
|
case 'R':
|
|
cie.fde_encoding = *buf++;
|
|
ENSURE_NO_RELOCS (buf);
|
|
if (get_DW_EH_PE_width (cie.fde_encoding, ptr_size) == 0)
|
|
goto free_no_table;
|
|
break;
|
|
case 'P':
|
|
{
|
|
int per_width;
|
|
|
|
cie.per_encoding = *buf++;
|
|
per_width = get_DW_EH_PE_width (cie.per_encoding,
|
|
ptr_size);
|
|
if (per_width == 0)
|
|
goto free_no_table;
|
|
if ((cie.per_encoding & 0xf0) == DW_EH_PE_aligned)
|
|
buf = (ehbuf
|
|
+ ((buf - ehbuf + per_width - 1)
|
|
& ~((bfd_size_type) per_width - 1)));
|
|
ENSURE_NO_RELOCS (buf);
|
|
/* Ensure we have a reloc here, against
|
|
a global symbol. */
|
|
if (GET_RELOC (buf) != NULL)
|
|
{
|
|
unsigned long r_symndx;
|
|
|
|
#ifdef BFD64
|
|
if (ptr_size == 8)
|
|
r_symndx = ELF64_R_SYM (cookie->rel->r_info);
|
|
else
|
|
#endif
|
|
r_symndx = ELF32_R_SYM (cookie->rel->r_info);
|
|
if (r_symndx >= cookie->locsymcount)
|
|
{
|
|
struct elf_link_hash_entry *h;
|
|
|
|
r_symndx -= cookie->extsymoff;
|
|
h = cookie->sym_hashes[r_symndx];
|
|
|
|
while (h->root.type == bfd_link_hash_indirect
|
|
|| h->root.type == bfd_link_hash_warning)
|
|
h = (struct elf_link_hash_entry *)
|
|
h->root.u.i.link;
|
|
|
|
cie.personality = h;
|
|
}
|
|
cookie->rel++;
|
|
}
|
|
buf += per_width;
|
|
}
|
|
break;
|
|
default:
|
|
/* Unrecognized augmentation. Better bail out. */
|
|
goto free_no_table;
|
|
}
|
|
}
|
|
|
|
/* For shared libraries, try to get rid of as many RELATIVE relocs
|
|
as possible. */
|
|
if (info->shared
|
|
&& (get_elf_backend_data (abfd)
|
|
->elf_backend_can_make_relative_eh_frame
|
|
(abfd, info, sec))
|
|
&& (cie.fde_encoding & 0xf0) == DW_EH_PE_absptr)
|
|
cie.make_relative = 1;
|
|
|
|
if (info->shared
|
|
&& (get_elf_backend_data (abfd)
|
|
->elf_backend_can_make_lsda_relative_eh_frame
|
|
(abfd, info, sec))
|
|
&& (cie.lsda_encoding & 0xf0) == DW_EH_PE_absptr)
|
|
cie.make_lsda_relative = 1;
|
|
|
|
/* If FDE encoding was not specified, it defaults to
|
|
DW_EH_absptr. */
|
|
if (cie.fde_encoding == DW_EH_PE_omit)
|
|
cie.fde_encoding = DW_EH_PE_absptr;
|
|
|
|
initial_insn_length = cie.hdr.length - (buf - last_fde - 4);
|
|
if (initial_insn_length <= 50)
|
|
{
|
|
cie.initial_insn_length = initial_insn_length;
|
|
memcpy (cie.initial_instructions, buf, initial_insn_length);
|
|
}
|
|
buf += initial_insn_length;
|
|
ENSURE_NO_RELOCS (buf);
|
|
last_cie = last_fde;
|
|
}
|
|
else
|
|
{
|
|
/* Ensure this FDE uses the last CIE encountered. */
|
|
if (last_cie == NULL
|
|
|| hdr.id != (unsigned int) (buf - 4 - last_cie))
|
|
goto free_no_table;
|
|
|
|
ENSURE_NO_RELOCS (buf);
|
|
if (GET_RELOC (buf) == NULL)
|
|
/* This should not happen. */
|
|
goto free_no_table;
|
|
if ((*reloc_symbol_deleted_p) (buf - ehbuf, cookie))
|
|
{
|
|
/* This is a FDE against a discarded section. It should
|
|
be deleted. */
|
|
new_size -= hdr.length + 4;
|
|
sec_info->entry[sec_info->count].removed = 1;
|
|
}
|
|
else
|
|
{
|
|
if (info->shared
|
|
&& (((cie.fde_encoding & 0xf0) == DW_EH_PE_absptr
|
|
&& cie.make_relative == 0)
|
|
|| (cie.fde_encoding & 0xf0) == DW_EH_PE_aligned))
|
|
{
|
|
/* If a shared library uses absolute pointers
|
|
which we cannot turn into PC relative,
|
|
don't create the binary search table,
|
|
since it is affected by runtime relocations. */
|
|
hdr_info->table = FALSE;
|
|
}
|
|
cie_usage_count++;
|
|
hdr_info->fde_count++;
|
|
}
|
|
if (cie.lsda_encoding != DW_EH_PE_omit)
|
|
{
|
|
unsigned int dummy;
|
|
|
|
aug = buf;
|
|
buf += 2 * get_DW_EH_PE_width (cie.fde_encoding, ptr_size);
|
|
if (cie.augmentation[0] == 'z')
|
|
read_uleb128 (dummy, buf);
|
|
/* If some new augmentation data is added before LSDA
|
|
in FDE augmentation area, this need to be adjusted. */
|
|
sec_info->entry[sec_info->count].lsda_offset = (buf - aug);
|
|
}
|
|
buf = last_fde + 4 + hdr.length;
|
|
SKIP_RELOCS (buf);
|
|
}
|
|
|
|
sec_info->entry[sec_info->count].fde_encoding = cie.fde_encoding;
|
|
sec_info->entry[sec_info->count].lsda_encoding = cie.lsda_encoding;
|
|
sec_info->count++;
|
|
}
|
|
|
|
elf_section_data (sec)->sec_info = sec_info;
|
|
sec->sec_info_type = ELF_INFO_TYPE_EH_FRAME;
|
|
|
|
/* Ok, now we can assign new offsets. */
|
|
offset = 0;
|
|
last_cie_ndx = 0;
|
|
for (i = 0; i < sec_info->count; i++)
|
|
{
|
|
if (! sec_info->entry[i].removed)
|
|
{
|
|
sec_info->entry[i].new_offset = offset;
|
|
offset += sec_info->entry[i].size;
|
|
if (sec_info->entry[i].cie)
|
|
{
|
|
last_cie_ndx = i;
|
|
make_relative = sec_info->entry[i].make_relative;
|
|
make_lsda_relative = sec_info->entry[i].make_lsda_relative;
|
|
}
|
|
else
|
|
{
|
|
sec_info->entry[i].make_relative = make_relative;
|
|
sec_info->entry[i].make_lsda_relative = make_lsda_relative;
|
|
sec_info->entry[i].per_encoding_relative = 0;
|
|
}
|
|
}
|
|
else if (sec_info->entry[i].cie && sec_info->entry[i].sec == sec)
|
|
{
|
|
/* Need to adjust new_offset too. */
|
|
BFD_ASSERT (sec_info->entry[last_cie_ndx].offset
|
|
== sec_info->entry[i].new_offset);
|
|
sec_info->entry[i].new_offset
|
|
= sec_info->entry[last_cie_ndx].new_offset;
|
|
}
|
|
}
|
|
if (hdr_info->last_cie_sec == sec)
|
|
{
|
|
BFD_ASSERT (sec_info->entry[last_cie_ndx].offset
|
|
== hdr_info->last_cie_offset);
|
|
hdr_info->last_cie_offset = sec_info->entry[last_cie_ndx].new_offset;
|
|
}
|
|
|
|
/* Shrink the sec as needed. */
|
|
sec->rawsize = sec->size;
|
|
sec->size = new_size;
|
|
if (sec->size == 0)
|
|
sec->flags |= SEC_EXCLUDE;
|
|
|
|
free (ehbuf);
|
|
return new_size != sec->rawsize;
|
|
|
|
free_no_table:
|
|
if (ehbuf)
|
|
free (ehbuf);
|
|
if (sec_info)
|
|
free (sec_info);
|
|
hdr_info->table = FALSE;
|
|
hdr_info->last_cie.hdr.length = 0;
|
|
return FALSE;
|
|
}
|
|
|
|
/* This function is called for .eh_frame_hdr section after
|
|
_bfd_elf_discard_section_eh_frame has been called on all .eh_frame
|
|
input sections. It finalizes the size of .eh_frame_hdr section. */
|
|
|
|
bfd_boolean
|
|
_bfd_elf_discard_section_eh_frame_hdr (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
struct elf_link_hash_table *htab;
|
|
struct eh_frame_hdr_info *hdr_info;
|
|
asection *sec;
|
|
|
|
htab = elf_hash_table (info);
|
|
hdr_info = &htab->eh_info;
|
|
sec = hdr_info->hdr_sec;
|
|
if (sec == NULL)
|
|
return FALSE;
|
|
|
|
sec->size = EH_FRAME_HDR_SIZE;
|
|
if (hdr_info->table)
|
|
sec->size += 4 + hdr_info->fde_count * 8;
|
|
|
|
/* Request program headers to be recalculated. */
|
|
elf_tdata (abfd)->program_header_size = 0;
|
|
elf_tdata (abfd)->eh_frame_hdr = sec;
|
|
return TRUE;
|
|
}
|
|
|
|
/* This function is called from size_dynamic_sections.
|
|
It needs to decide whether .eh_frame_hdr should be output or not,
|
|
because later on it is too late for calling _bfd_strip_section_from_output,
|
|
since dynamic symbol table has been sized. */
|
|
|
|
bfd_boolean
|
|
_bfd_elf_maybe_strip_eh_frame_hdr (struct bfd_link_info *info)
|
|
{
|
|
asection *o;
|
|
bfd *abfd;
|
|
struct elf_link_hash_table *htab;
|
|
struct eh_frame_hdr_info *hdr_info;
|
|
|
|
htab = elf_hash_table (info);
|
|
hdr_info = &htab->eh_info;
|
|
if (hdr_info->hdr_sec == NULL)
|
|
return TRUE;
|
|
|
|
if (bfd_is_abs_section (hdr_info->hdr_sec->output_section))
|
|
{
|
|
hdr_info->hdr_sec = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
abfd = NULL;
|
|
if (info->eh_frame_hdr)
|
|
for (abfd = info->input_bfds; abfd != NULL; abfd = abfd->link_next)
|
|
{
|
|
/* Count only sections which have at least a single CIE or FDE.
|
|
There cannot be any CIE or FDE <= 8 bytes. */
|
|
o = bfd_get_section_by_name (abfd, ".eh_frame");
|
|
if (o && o->size > 8 && !bfd_is_abs_section (o->output_section))
|
|
break;
|
|
}
|
|
|
|
if (abfd == NULL)
|
|
{
|
|
_bfd_strip_section_from_output (info, hdr_info->hdr_sec);
|
|
hdr_info->hdr_sec = NULL;
|
|
return TRUE;
|
|
}
|
|
|
|
hdr_info->table = TRUE;
|
|
return TRUE;
|
|
}
|
|
|
|
/* Adjust an address in the .eh_frame section. Given OFFSET within
|
|
SEC, this returns the new offset in the adjusted .eh_frame section,
|
|
or -1 if the address refers to a CIE/FDE which has been removed
|
|
or to offset with dynamic relocation which is no longer needed. */
|
|
|
|
bfd_vma
|
|
_bfd_elf_eh_frame_section_offset (bfd *output_bfd ATTRIBUTE_UNUSED,
|
|
asection *sec,
|
|
bfd_vma offset)
|
|
{
|
|
struct eh_frame_sec_info *sec_info;
|
|
unsigned int lo, hi, mid;
|
|
|
|
if (sec->sec_info_type != ELF_INFO_TYPE_EH_FRAME)
|
|
return offset;
|
|
sec_info = elf_section_data (sec)->sec_info;
|
|
|
|
if (offset >= sec->rawsize)
|
|
return offset - sec->rawsize + sec->size;
|
|
|
|
lo = 0;
|
|
hi = sec_info->count;
|
|
mid = 0;
|
|
while (lo < hi)
|
|
{
|
|
mid = (lo + hi) / 2;
|
|
if (offset < sec_info->entry[mid].offset)
|
|
hi = mid;
|
|
else if (offset
|
|
>= sec_info->entry[mid].offset + sec_info->entry[mid].size)
|
|
lo = mid + 1;
|
|
else
|
|
break;
|
|
}
|
|
|
|
BFD_ASSERT (lo < hi);
|
|
|
|
/* FDE or CIE was removed. */
|
|
if (sec_info->entry[mid].removed)
|
|
return (bfd_vma) -1;
|
|
|
|
/* If converting to DW_EH_PE_pcrel, there will be no need for run-time
|
|
relocation against FDE's initial_location field. */
|
|
if (sec_info->entry[mid].make_relative
|
|
&& ! sec_info->entry[mid].cie
|
|
&& offset == sec_info->entry[mid].offset + 8)
|
|
return (bfd_vma) -2;
|
|
|
|
/* If converting LSDA pointers to DW_EH_PE_pcrel, there will be no need
|
|
for run-time relocation against LSDA field. */
|
|
if (sec_info->entry[mid].make_lsda_relative
|
|
&& ! sec_info->entry[mid].cie
|
|
&& (offset == (sec_info->entry[mid].offset + 8
|
|
+ sec_info->entry[mid].lsda_offset)))
|
|
return (bfd_vma) -2;
|
|
|
|
return (offset + sec_info->entry[mid].new_offset
|
|
- sec_info->entry[mid].offset);
|
|
}
|
|
|
|
/* Write out .eh_frame section. This is called with the relocated
|
|
contents. */
|
|
|
|
bfd_boolean
|
|
_bfd_elf_write_section_eh_frame (bfd *abfd,
|
|
struct bfd_link_info *info,
|
|
asection *sec,
|
|
bfd_byte *contents)
|
|
{
|
|
struct eh_frame_sec_info *sec_info;
|
|
struct elf_link_hash_table *htab;
|
|
struct eh_frame_hdr_info *hdr_info;
|
|
unsigned int i;
|
|
bfd_byte *p, *buf;
|
|
unsigned int leb128_tmp;
|
|
unsigned int cie_offset = 0;
|
|
unsigned int ptr_size;
|
|
|
|
ptr_size = (elf_elfheader (sec->owner)->e_ident[EI_CLASS]
|
|
== ELFCLASS64) ? 8 : 4;
|
|
|
|
if (sec->sec_info_type != ELF_INFO_TYPE_EH_FRAME)
|
|
return bfd_set_section_contents (abfd, sec->output_section, contents,
|
|
sec->output_offset, sec->size);
|
|
sec_info = elf_section_data (sec)->sec_info;
|
|
htab = elf_hash_table (info);
|
|
hdr_info = &htab->eh_info;
|
|
if (hdr_info->table && hdr_info->array == NULL)
|
|
hdr_info->array
|
|
= bfd_malloc (hdr_info->fde_count * sizeof(*hdr_info->array));
|
|
if (hdr_info->array == NULL)
|
|
hdr_info = NULL;
|
|
|
|
p = contents;
|
|
for (i = 0; i < sec_info->count; ++i)
|
|
{
|
|
if (sec_info->entry[i].removed)
|
|
{
|
|
if (sec_info->entry[i].cie)
|
|
{
|
|
/* If CIE is removed due to no remaining FDEs referencing it
|
|
and there were no CIEs kept before it, sec_info->entry[i].sec
|
|
will be zero. */
|
|
if (sec_info->entry[i].sec == NULL)
|
|
cie_offset = 0;
|
|
else
|
|
{
|
|
cie_offset = sec_info->entry[i].new_offset;
|
|
cie_offset += (sec_info->entry[i].sec->output_section->vma
|
|
+ sec_info->entry[i].sec->output_offset
|
|
- sec->output_section->vma
|
|
- sec->output_offset);
|
|
}
|
|
}
|
|
continue;
|
|
}
|
|
|
|
if (sec_info->entry[i].cie)
|
|
{
|
|
/* CIE */
|
|
cie_offset = sec_info->entry[i].new_offset;
|
|
if (sec_info->entry[i].make_relative
|
|
|| sec_info->entry[i].make_lsda_relative
|
|
|| sec_info->entry[i].per_encoding_relative)
|
|
{
|
|
unsigned char *aug;
|
|
unsigned int action;
|
|
unsigned int dummy, per_width, per_encoding;
|
|
|
|
/* Need to find 'R' or 'L' augmentation's argument and modify
|
|
DW_EH_PE_* value. */
|
|
action = (sec_info->entry[i].make_relative ? 1 : 0)
|
|
| (sec_info->entry[i].make_lsda_relative ? 2 : 0)
|
|
| (sec_info->entry[i].per_encoding_relative ? 4 : 0);
|
|
buf = contents + sec_info->entry[i].offset;
|
|
/* Skip length, id and version. */
|
|
buf += 9;
|
|
aug = buf;
|
|
buf = strchr (buf, '\0') + 1;
|
|
read_uleb128 (dummy, buf);
|
|
read_sleb128 (dummy, buf);
|
|
read_uleb128 (dummy, buf);
|
|
if (*aug == 'z')
|
|
{
|
|
read_uleb128 (dummy, buf);
|
|
aug++;
|
|
}
|
|
|
|
while (action)
|
|
switch (*aug++)
|
|
{
|
|
case 'L':
|
|
if (action & 2)
|
|
{
|
|
BFD_ASSERT (*buf == sec_info->entry[i].lsda_encoding);
|
|
*buf |= DW_EH_PE_pcrel;
|
|
action &= ~2;
|
|
}
|
|
buf++;
|
|
break;
|
|
case 'P':
|
|
per_encoding = *buf++;
|
|
per_width = get_DW_EH_PE_width (per_encoding,
|
|
ptr_size);
|
|
BFD_ASSERT (per_width != 0);
|
|
BFD_ASSERT (((per_encoding & 0x70) == DW_EH_PE_pcrel)
|
|
== sec_info->entry[i].per_encoding_relative);
|
|
if ((per_encoding & 0xf0) == DW_EH_PE_aligned)
|
|
buf = (contents
|
|
+ ((buf - contents + per_width - 1)
|
|
& ~((bfd_size_type) per_width - 1)));
|
|
if (action & 4)
|
|
{
|
|
bfd_vma value;
|
|
|
|
value = read_value (abfd, buf, per_width,
|
|
get_DW_EH_PE_signed
|
|
(per_encoding));
|
|
value += (sec_info->entry[i].offset
|
|
- sec_info->entry[i].new_offset);
|
|
write_value (abfd, buf, value, per_width);
|
|
action &= ~4;
|
|
}
|
|
buf += per_width;
|
|
break;
|
|
case 'R':
|
|
if (action & 1)
|
|
{
|
|
BFD_ASSERT (*buf == sec_info->entry[i].fde_encoding);
|
|
*buf |= DW_EH_PE_pcrel;
|
|
action &= ~1;
|
|
}
|
|
buf++;
|
|
break;
|
|
default:
|
|
BFD_FAIL ();
|
|
}
|
|
}
|
|
}
|
|
else if (sec_info->entry[i].size > 4)
|
|
{
|
|
/* FDE */
|
|
bfd_vma value = 0, address;
|
|
unsigned int width;
|
|
|
|
buf = contents + sec_info->entry[i].offset;
|
|
/* Skip length. */
|
|
buf += 4;
|
|
bfd_put_32 (abfd,
|
|
sec_info->entry[i].new_offset + 4 - cie_offset, buf);
|
|
buf += 4;
|
|
width = get_DW_EH_PE_width (sec_info->entry[i].fde_encoding,
|
|
ptr_size);
|
|
address = value = read_value (abfd, buf, width,
|
|
get_DW_EH_PE_signed
|
|
(sec_info->entry[i].fde_encoding));
|
|
if (value)
|
|
{
|
|
switch (sec_info->entry[i].fde_encoding & 0xf0)
|
|
{
|
|
case DW_EH_PE_indirect:
|
|
case DW_EH_PE_textrel:
|
|
BFD_ASSERT (hdr_info == NULL);
|
|
break;
|
|
case DW_EH_PE_datarel:
|
|
{
|
|
asection *got = bfd_get_section_by_name (abfd, ".got");
|
|
|
|
BFD_ASSERT (got != NULL);
|
|
address += got->vma;
|
|
}
|
|
break;
|
|
case DW_EH_PE_pcrel:
|
|
value += (sec_info->entry[i].offset
|
|
- sec_info->entry[i].new_offset);
|
|
address += (sec->output_section->vma + sec->output_offset
|
|
+ sec_info->entry[i].offset + 8);
|
|
break;
|
|
}
|
|
if (sec_info->entry[i].make_relative)
|
|
value -= (sec->output_section->vma + sec->output_offset
|
|
+ sec_info->entry[i].new_offset + 8);
|
|
write_value (abfd, buf, value, width);
|
|
}
|
|
|
|
if (hdr_info)
|
|
{
|
|
hdr_info->array[hdr_info->array_count].initial_loc = address;
|
|
hdr_info->array[hdr_info->array_count++].fde
|
|
= (sec->output_section->vma + sec->output_offset
|
|
+ sec_info->entry[i].new_offset);
|
|
}
|
|
|
|
if ((sec_info->entry[i].lsda_encoding & 0xf0) == DW_EH_PE_pcrel
|
|
|| sec_info->entry[i].make_lsda_relative)
|
|
{
|
|
buf += sec_info->entry[i].lsda_offset;
|
|
width = get_DW_EH_PE_width (sec_info->entry[i].lsda_encoding,
|
|
ptr_size);
|
|
value = read_value (abfd, buf, width,
|
|
get_DW_EH_PE_signed
|
|
(sec_info->entry[i].lsda_encoding));
|
|
if (value)
|
|
{
|
|
if ((sec_info->entry[i].lsda_encoding & 0xf0)
|
|
== DW_EH_PE_pcrel)
|
|
value += (sec_info->entry[i].offset
|
|
- sec_info->entry[i].new_offset);
|
|
else if (sec_info->entry[i].make_lsda_relative)
|
|
value -= (sec->output_section->vma + sec->output_offset
|
|
+ sec_info->entry[i].new_offset + 8
|
|
+ sec_info->entry[i].lsda_offset);
|
|
write_value (abfd, buf, value, width);
|
|
}
|
|
}
|
|
}
|
|
else
|
|
/* Terminating FDE must be at the end of .eh_frame section only. */
|
|
BFD_ASSERT (i == sec_info->count - 1);
|
|
|
|
BFD_ASSERT (p == contents + sec_info->entry[i].new_offset);
|
|
memmove (p, contents + sec_info->entry[i].offset,
|
|
sec_info->entry[i].size);
|
|
p += sec_info->entry[i].size;
|
|
}
|
|
|
|
{
|
|
unsigned int alignment = 1 << sec->alignment_power;
|
|
unsigned int pad = sec->size % alignment;
|
|
|
|
/* Don't pad beyond the raw size of the output section. It
|
|
can happen at the last input section. */
|
|
if (pad
|
|
&& ((sec->output_offset + sec->size + pad)
|
|
<= sec->output_section->size))
|
|
{
|
|
/* Find the last CIE/FDE. */
|
|
for (i = sec_info->count - 1; i > 0; i--)
|
|
if (! sec_info->entry[i].removed)
|
|
break;
|
|
|
|
/* The size of the last CIE/FDE must be at least 4. */
|
|
if (sec_info->entry[i].removed
|
|
|| sec_info->entry[i].size < 4)
|
|
abort ();
|
|
|
|
pad = alignment - pad;
|
|
|
|
buf = contents + sec_info->entry[i].new_offset;
|
|
|
|
/* Update length. */
|
|
sec_info->entry[i].size += pad;
|
|
bfd_put_32 (abfd, sec_info->entry[i].size - 4, buf);
|
|
|
|
/* Pad it with DW_CFA_nop */
|
|
memset (p, 0, pad);
|
|
p += pad;
|
|
|
|
sec->size += pad;
|
|
}
|
|
}
|
|
|
|
BFD_ASSERT ((bfd_size_type) (p - contents) == sec->size);
|
|
|
|
return bfd_set_section_contents (abfd, sec->output_section,
|
|
contents, (file_ptr) sec->output_offset,
|
|
sec->size);
|
|
}
|
|
|
|
/* Helper function used to sort .eh_frame_hdr search table by increasing
|
|
VMA of FDE initial location. */
|
|
|
|
static int
|
|
vma_compare (const void *a, const void *b)
|
|
{
|
|
const struct eh_frame_array_ent *p = a;
|
|
const struct eh_frame_array_ent *q = b;
|
|
if (p->initial_loc > q->initial_loc)
|
|
return 1;
|
|
if (p->initial_loc < q->initial_loc)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
/* Write out .eh_frame_hdr section. This must be called after
|
|
_bfd_elf_write_section_eh_frame has been called on all input
|
|
.eh_frame sections.
|
|
.eh_frame_hdr format:
|
|
ubyte version (currently 1)
|
|
ubyte eh_frame_ptr_enc (DW_EH_PE_* encoding of pointer to start of
|
|
.eh_frame section)
|
|
ubyte fde_count_enc (DW_EH_PE_* encoding of total FDE count
|
|
number (or DW_EH_PE_omit if there is no
|
|
binary search table computed))
|
|
ubyte table_enc (DW_EH_PE_* encoding of binary search table,
|
|
or DW_EH_PE_omit if not present.
|
|
DW_EH_PE_datarel is using address of
|
|
.eh_frame_hdr section start as base)
|
|
[encoded] eh_frame_ptr (pointer to start of .eh_frame section)
|
|
optionally followed by:
|
|
[encoded] fde_count (total number of FDEs in .eh_frame section)
|
|
fde_count x [encoded] initial_loc, fde
|
|
(array of encoded pairs containing
|
|
FDE initial_location field and FDE address,
|
|
sorted by increasing initial_loc). */
|
|
|
|
bfd_boolean
|
|
_bfd_elf_write_section_eh_frame_hdr (bfd *abfd, struct bfd_link_info *info)
|
|
{
|
|
struct elf_link_hash_table *htab;
|
|
struct eh_frame_hdr_info *hdr_info;
|
|
asection *sec;
|
|
bfd_byte *contents;
|
|
asection *eh_frame_sec;
|
|
bfd_size_type size;
|
|
bfd_boolean retval;
|
|
bfd_vma encoded_eh_frame;
|
|
|
|
htab = elf_hash_table (info);
|
|
hdr_info = &htab->eh_info;
|
|
sec = hdr_info->hdr_sec;
|
|
if (sec == NULL)
|
|
return TRUE;
|
|
|
|
size = EH_FRAME_HDR_SIZE;
|
|
if (hdr_info->array && hdr_info->array_count == hdr_info->fde_count)
|
|
size += 4 + hdr_info->fde_count * 8;
|
|
contents = bfd_malloc (size);
|
|
if (contents == NULL)
|
|
return FALSE;
|
|
|
|
eh_frame_sec = bfd_get_section_by_name (abfd, ".eh_frame");
|
|
if (eh_frame_sec == NULL)
|
|
{
|
|
free (contents);
|
|
return FALSE;
|
|
}
|
|
|
|
memset (contents, 0, EH_FRAME_HDR_SIZE);
|
|
contents[0] = 1; /* Version. */
|
|
contents[1] = get_elf_backend_data (abfd)->elf_backend_encode_eh_address
|
|
(abfd, info, eh_frame_sec, 0, sec, 4,
|
|
&encoded_eh_frame); /* .eh_frame offset. */
|
|
|
|
if (hdr_info->array && hdr_info->array_count == hdr_info->fde_count)
|
|
{
|
|
contents[2] = DW_EH_PE_udata4; /* FDE count encoding. */
|
|
contents[3] = DW_EH_PE_datarel | DW_EH_PE_sdata4; /* Search table enc. */
|
|
}
|
|
else
|
|
{
|
|
contents[2] = DW_EH_PE_omit;
|
|
contents[3] = DW_EH_PE_omit;
|
|
}
|
|
bfd_put_32 (abfd, encoded_eh_frame, contents + 4);
|
|
|
|
if (contents[2] != DW_EH_PE_omit)
|
|
{
|
|
unsigned int i;
|
|
|
|
bfd_put_32 (abfd, hdr_info->fde_count, contents + EH_FRAME_HDR_SIZE);
|
|
qsort (hdr_info->array, hdr_info->fde_count, sizeof (*hdr_info->array),
|
|
vma_compare);
|
|
for (i = 0; i < hdr_info->fde_count; i++)
|
|
{
|
|
bfd_put_32 (abfd,
|
|
hdr_info->array[i].initial_loc
|
|
- sec->output_section->vma,
|
|
contents + EH_FRAME_HDR_SIZE + i * 8 + 4);
|
|
bfd_put_32 (abfd,
|
|
hdr_info->array[i].fde - sec->output_section->vma,
|
|
contents + EH_FRAME_HDR_SIZE + i * 8 + 8);
|
|
}
|
|
}
|
|
|
|
retval = bfd_set_section_contents (abfd, sec->output_section,
|
|
contents, (file_ptr) sec->output_offset,
|
|
sec->size);
|
|
free (contents);
|
|
return retval;
|
|
}
|
|
|
|
/* Decide whether we can use a PC-relative encoding within the given
|
|
EH frame section. This is the default implementation. */
|
|
|
|
bfd_boolean
|
|
_bfd_elf_can_make_relative (bfd *input_bfd ATTRIBUTE_UNUSED,
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
|
asection *eh_frame_section ATTRIBUTE_UNUSED)
|
|
{
|
|
return TRUE;
|
|
}
|
|
|
|
/* Select an encoding for the given address. Preference is given to
|
|
PC-relative addressing modes. */
|
|
|
|
bfd_byte
|
|
_bfd_elf_encode_eh_address (bfd *abfd ATTRIBUTE_UNUSED,
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
|
asection *osec, bfd_vma offset,
|
|
asection *loc_sec, bfd_vma loc_offset,
|
|
bfd_vma *encoded)
|
|
{
|
|
*encoded = osec->vma + offset -
|
|
(loc_sec->output_section->vma + loc_sec->output_offset + loc_offset);
|
|
return DW_EH_PE_pcrel | DW_EH_PE_sdata4;
|
|
}
|