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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.
1879 lines
50 KiB
C
1879 lines
50 KiB
C
/* DWARF 2 support.
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Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
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2004 Free Software Foundation, Inc.
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Adapted from gdb/dwarf2read.c by Gavin Koch of Cygnus Solutions
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(gavin@cygnus.com).
|
|
|
|
From the dwarf2read.c header:
|
|
Adapted by Gary Funck (gary@intrepid.com), Intrepid Technology,
|
|
Inc. with support from Florida State University (under contract
|
|
with the Ada Joint Program Office), and Silicon Graphics, Inc.
|
|
Initial contribution by Brent Benson, Harris Computer Systems, Inc.,
|
|
based on Fred Fish's (Cygnus Support) implementation of DWARF 1
|
|
support in dwarfread.c
|
|
|
|
This file is part of BFD.
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or (at
|
|
your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful, but
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "libiberty.h"
|
|
#include "libbfd.h"
|
|
#include "elf-bfd.h"
|
|
#include "elf/dwarf2.h"
|
|
|
|
/* The data in the .debug_line statement prologue looks like this. */
|
|
|
|
struct line_head
|
|
{
|
|
bfd_vma total_length;
|
|
unsigned short version;
|
|
bfd_vma prologue_length;
|
|
unsigned char minimum_instruction_length;
|
|
unsigned char default_is_stmt;
|
|
int line_base;
|
|
unsigned char line_range;
|
|
unsigned char opcode_base;
|
|
unsigned char *standard_opcode_lengths;
|
|
};
|
|
|
|
/* Attributes have a name and a value. */
|
|
|
|
struct attribute
|
|
{
|
|
enum dwarf_attribute name;
|
|
enum dwarf_form form;
|
|
union
|
|
{
|
|
char *str;
|
|
struct dwarf_block *blk;
|
|
bfd_uint64_t val;
|
|
bfd_int64_t sval;
|
|
}
|
|
u;
|
|
};
|
|
|
|
/* Blocks are a bunch of untyped bytes. */
|
|
struct dwarf_block
|
|
{
|
|
unsigned int size;
|
|
char *data;
|
|
};
|
|
|
|
struct dwarf2_debug
|
|
{
|
|
/* A list of all previously read comp_units. */
|
|
struct comp_unit* all_comp_units;
|
|
|
|
/* The next unread compilation unit within the .debug_info section.
|
|
Zero indicates that the .debug_info section has not been loaded
|
|
into a buffer yet. */
|
|
char* info_ptr;
|
|
|
|
/* Pointer to the end of the .debug_info section memory buffer. */
|
|
char* info_ptr_end;
|
|
|
|
/* Pointer to the section and address of the beginning of the
|
|
section. */
|
|
asection* sec;
|
|
char* sec_info_ptr;
|
|
|
|
/* Pointer to the symbol table. */
|
|
asymbol** syms;
|
|
|
|
/* Pointer to the .debug_abbrev section loaded into memory. */
|
|
char* dwarf_abbrev_buffer;
|
|
|
|
/* Length of the loaded .debug_abbrev section. */
|
|
unsigned long dwarf_abbrev_size;
|
|
|
|
/* Buffer for decode_line_info. */
|
|
char *dwarf_line_buffer;
|
|
|
|
/* Length of the loaded .debug_line section. */
|
|
unsigned long dwarf_line_size;
|
|
|
|
/* Pointer to the .debug_str section loaded into memory. */
|
|
char* dwarf_str_buffer;
|
|
|
|
/* Length of the loaded .debug_str section. */
|
|
unsigned long dwarf_str_size;
|
|
};
|
|
|
|
struct arange
|
|
{
|
|
struct arange *next;
|
|
bfd_vma low;
|
|
bfd_vma high;
|
|
};
|
|
|
|
/* A minimal decoding of DWARF2 compilation units. We only decode
|
|
what's needed to get to the line number information. */
|
|
|
|
struct comp_unit
|
|
{
|
|
/* Chain the previously read compilation units. */
|
|
struct comp_unit* next_unit;
|
|
|
|
/* Keep the bdf convenient (for memory allocation). */
|
|
bfd* abfd;
|
|
|
|
/* The lowest and higest addresses contained in this compilation
|
|
unit as specified in the compilation unit header. */
|
|
struct arange arange;
|
|
|
|
/* The DW_AT_name attribute (for error messages). */
|
|
char* name;
|
|
|
|
/* The abbrev hash table. */
|
|
struct abbrev_info** abbrevs;
|
|
|
|
/* Note that an error was found by comp_unit_find_nearest_line. */
|
|
int error;
|
|
|
|
/* The DW_AT_comp_dir attribute. */
|
|
char* comp_dir;
|
|
|
|
/* TRUE if there is a line number table associated with this comp. unit. */
|
|
int stmtlist;
|
|
|
|
/* The offset into .debug_line of the line number table. */
|
|
unsigned long line_offset;
|
|
|
|
/* Pointer to the first child die for the comp unit. */
|
|
char *first_child_die_ptr;
|
|
|
|
/* The end of the comp unit. */
|
|
char *end_ptr;
|
|
|
|
/* The decoded line number, NULL if not yet decoded. */
|
|
struct line_info_table* line_table;
|
|
|
|
/* A list of the functions found in this comp. unit. */
|
|
struct funcinfo* function_table;
|
|
|
|
/* Pointer to dwarf2_debug structure. */
|
|
struct dwarf2_debug *stash;
|
|
|
|
/* Address size for this unit - from unit header. */
|
|
unsigned char addr_size;
|
|
|
|
/* Offset size for this unit - from unit header. */
|
|
unsigned char offset_size;
|
|
};
|
|
|
|
/* This data structure holds the information of an abbrev. */
|
|
struct abbrev_info
|
|
{
|
|
unsigned int number; /* Number identifying abbrev. */
|
|
enum dwarf_tag tag; /* DWARF tag. */
|
|
int has_children; /* Boolean. */
|
|
unsigned int num_attrs; /* Number of attributes. */
|
|
struct attr_abbrev *attrs; /* An array of attribute descriptions. */
|
|
struct abbrev_info *next; /* Next in chain. */
|
|
};
|
|
|
|
struct attr_abbrev
|
|
{
|
|
enum dwarf_attribute name;
|
|
enum dwarf_form form;
|
|
};
|
|
|
|
#ifndef ABBREV_HASH_SIZE
|
|
#define ABBREV_HASH_SIZE 121
|
|
#endif
|
|
#ifndef ATTR_ALLOC_CHUNK
|
|
#define ATTR_ALLOC_CHUNK 4
|
|
#endif
|
|
|
|
/* VERBATIM
|
|
The following function up to the END VERBATIM mark are
|
|
copied directly from dwarf2read.c. */
|
|
|
|
/* Read dwarf information from a buffer. */
|
|
|
|
static unsigned int
|
|
read_1_byte (bfd *abfd ATTRIBUTE_UNUSED, char *buf)
|
|
{
|
|
return bfd_get_8 (abfd, buf);
|
|
}
|
|
|
|
static int
|
|
read_1_signed_byte (bfd *abfd ATTRIBUTE_UNUSED, char *buf)
|
|
{
|
|
return bfd_get_signed_8 (abfd, buf);
|
|
}
|
|
|
|
static unsigned int
|
|
read_2_bytes (bfd *abfd, char *buf)
|
|
{
|
|
return bfd_get_16 (abfd, buf);
|
|
}
|
|
|
|
static unsigned int
|
|
read_4_bytes (bfd *abfd, char *buf)
|
|
{
|
|
return bfd_get_32 (abfd, buf);
|
|
}
|
|
|
|
static bfd_uint64_t
|
|
read_8_bytes (bfd *abfd, char *buf)
|
|
{
|
|
return bfd_get_64 (abfd, buf);
|
|
}
|
|
|
|
static char *
|
|
read_n_bytes (bfd *abfd ATTRIBUTE_UNUSED,
|
|
char *buf,
|
|
unsigned int size ATTRIBUTE_UNUSED)
|
|
{
|
|
/* If the size of a host char is 8 bits, we can return a pointer
|
|
to the buffer, otherwise we have to copy the data to a buffer
|
|
allocated on the temporary obstack. */
|
|
return buf;
|
|
}
|
|
|
|
static char *
|
|
read_string (bfd *abfd ATTRIBUTE_UNUSED,
|
|
char *buf,
|
|
unsigned int *bytes_read_ptr)
|
|
{
|
|
/* Return a pointer to the embedded string. */
|
|
if (*buf == '\0')
|
|
{
|
|
*bytes_read_ptr = 1;
|
|
return NULL;
|
|
}
|
|
|
|
*bytes_read_ptr = strlen (buf) + 1;
|
|
return buf;
|
|
}
|
|
|
|
static char *
|
|
read_indirect_string (struct comp_unit* unit,
|
|
char *buf,
|
|
unsigned int *bytes_read_ptr)
|
|
{
|
|
bfd_uint64_t offset;
|
|
struct dwarf2_debug *stash = unit->stash;
|
|
|
|
if (unit->offset_size == 4)
|
|
offset = read_4_bytes (unit->abfd, buf);
|
|
else
|
|
offset = read_8_bytes (unit->abfd, buf);
|
|
*bytes_read_ptr = unit->offset_size;
|
|
|
|
if (! stash->dwarf_str_buffer)
|
|
{
|
|
asection *msec;
|
|
bfd *abfd = unit->abfd;
|
|
bfd_size_type sz;
|
|
|
|
msec = bfd_get_section_by_name (abfd, ".debug_str");
|
|
if (! msec)
|
|
{
|
|
(*_bfd_error_handler)
|
|
(_("Dwarf Error: Can't find .debug_str section."));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return NULL;
|
|
}
|
|
|
|
sz = msec->rawsize ? msec->rawsize : msec->size;
|
|
stash->dwarf_str_size = sz;
|
|
stash->dwarf_str_buffer = bfd_alloc (abfd, sz);
|
|
if (! stash->dwarf_abbrev_buffer)
|
|
return NULL;
|
|
|
|
if (! bfd_get_section_contents (abfd, msec, stash->dwarf_str_buffer,
|
|
0, sz))
|
|
return NULL;
|
|
}
|
|
|
|
if (offset >= stash->dwarf_str_size)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: DW_FORM_strp offset (%lu) greater than or equal to .debug_str size (%lu)."),
|
|
(unsigned long) offset, stash->dwarf_str_size);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return NULL;
|
|
}
|
|
|
|
buf = stash->dwarf_str_buffer + offset;
|
|
if (*buf == '\0')
|
|
return NULL;
|
|
return buf;
|
|
}
|
|
|
|
static unsigned int
|
|
read_unsigned_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
|
|
char *buf,
|
|
unsigned int *bytes_read_ptr)
|
|
{
|
|
unsigned int result;
|
|
unsigned int num_read;
|
|
int shift;
|
|
unsigned char byte;
|
|
|
|
result = 0;
|
|
shift = 0;
|
|
num_read = 0;
|
|
|
|
do
|
|
{
|
|
byte = bfd_get_8 (abfd, buf);
|
|
buf ++;
|
|
num_read ++;
|
|
result |= ((byte & 0x7f) << shift);
|
|
shift += 7;
|
|
}
|
|
while (byte & 0x80);
|
|
|
|
* bytes_read_ptr = num_read;
|
|
|
|
return result;
|
|
}
|
|
|
|
static int
|
|
read_signed_leb128 (bfd *abfd ATTRIBUTE_UNUSED,
|
|
char *buf,
|
|
unsigned int * bytes_read_ptr)
|
|
{
|
|
int result;
|
|
int shift;
|
|
int num_read;
|
|
unsigned char byte;
|
|
|
|
result = 0;
|
|
shift = 0;
|
|
num_read = 0;
|
|
|
|
do
|
|
{
|
|
byte = bfd_get_8 (abfd, buf);
|
|
buf ++;
|
|
num_read ++;
|
|
result |= ((byte & 0x7f) << shift);
|
|
shift += 7;
|
|
}
|
|
while (byte & 0x80);
|
|
|
|
if ((shift < 32) && (byte & 0x40))
|
|
result |= -(1 << shift);
|
|
|
|
* bytes_read_ptr = num_read;
|
|
|
|
return result;
|
|
}
|
|
|
|
/* END VERBATIM */
|
|
|
|
static bfd_uint64_t
|
|
read_address (struct comp_unit *unit, char *buf)
|
|
{
|
|
switch (unit->addr_size)
|
|
{
|
|
case 8:
|
|
return bfd_get_64 (unit->abfd, buf);
|
|
case 4:
|
|
return bfd_get_32 (unit->abfd, buf);
|
|
case 2:
|
|
return bfd_get_16 (unit->abfd, buf);
|
|
default:
|
|
abort ();
|
|
}
|
|
}
|
|
|
|
/* Lookup an abbrev_info structure in the abbrev hash table. */
|
|
|
|
static struct abbrev_info *
|
|
lookup_abbrev (unsigned int number, struct abbrev_info **abbrevs)
|
|
{
|
|
unsigned int hash_number;
|
|
struct abbrev_info *abbrev;
|
|
|
|
hash_number = number % ABBREV_HASH_SIZE;
|
|
abbrev = abbrevs[hash_number];
|
|
|
|
while (abbrev)
|
|
{
|
|
if (abbrev->number == number)
|
|
return abbrev;
|
|
else
|
|
abbrev = abbrev->next;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* In DWARF version 2, the description of the debugging information is
|
|
stored in a separate .debug_abbrev section. Before we read any
|
|
dies from a section we read in all abbreviations and install them
|
|
in a hash table. */
|
|
|
|
static struct abbrev_info**
|
|
read_abbrevs (bfd *abfd, bfd_uint64_t offset, struct dwarf2_debug *stash)
|
|
{
|
|
struct abbrev_info **abbrevs;
|
|
char *abbrev_ptr;
|
|
struct abbrev_info *cur_abbrev;
|
|
unsigned int abbrev_number, bytes_read, abbrev_name;
|
|
unsigned int abbrev_form, hash_number;
|
|
bfd_size_type amt;
|
|
|
|
if (! stash->dwarf_abbrev_buffer)
|
|
{
|
|
asection *msec;
|
|
|
|
msec = bfd_get_section_by_name (abfd, ".debug_abbrev");
|
|
if (! msec)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_abbrev section."));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
stash->dwarf_abbrev_size = msec->size;
|
|
stash->dwarf_abbrev_buffer
|
|
= bfd_simple_get_relocated_section_contents (abfd, msec, NULL,
|
|
stash->syms);
|
|
if (! stash->dwarf_abbrev_buffer)
|
|
return 0;
|
|
}
|
|
|
|
if (offset >= stash->dwarf_abbrev_size)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: Abbrev offset (%lu) greater than or equal to .debug_abbrev size (%lu)."),
|
|
(unsigned long) offset, stash->dwarf_abbrev_size);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
amt = sizeof (struct abbrev_info*) * ABBREV_HASH_SIZE;
|
|
abbrevs = bfd_zalloc (abfd, amt);
|
|
|
|
abbrev_ptr = stash->dwarf_abbrev_buffer + offset;
|
|
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
|
|
abbrev_ptr += bytes_read;
|
|
|
|
/* Loop until we reach an abbrev number of 0. */
|
|
while (abbrev_number)
|
|
{
|
|
amt = sizeof (struct abbrev_info);
|
|
cur_abbrev = bfd_zalloc (abfd, amt);
|
|
|
|
/* Read in abbrev header. */
|
|
cur_abbrev->number = abbrev_number;
|
|
cur_abbrev->tag = (enum dwarf_tag)
|
|
read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
|
|
abbrev_ptr += bytes_read;
|
|
cur_abbrev->has_children = read_1_byte (abfd, abbrev_ptr);
|
|
abbrev_ptr += 1;
|
|
|
|
/* Now read in declarations. */
|
|
abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
|
|
abbrev_ptr += bytes_read;
|
|
abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
|
|
abbrev_ptr += bytes_read;
|
|
|
|
while (abbrev_name)
|
|
{
|
|
if ((cur_abbrev->num_attrs % ATTR_ALLOC_CHUNK) == 0)
|
|
{
|
|
amt = cur_abbrev->num_attrs + ATTR_ALLOC_CHUNK;
|
|
amt *= sizeof (struct attr_abbrev);
|
|
cur_abbrev->attrs = bfd_realloc (cur_abbrev->attrs, amt);
|
|
if (! cur_abbrev->attrs)
|
|
return 0;
|
|
}
|
|
|
|
cur_abbrev->attrs[cur_abbrev->num_attrs].name
|
|
= (enum dwarf_attribute) abbrev_name;
|
|
cur_abbrev->attrs[cur_abbrev->num_attrs++].form
|
|
= (enum dwarf_form) abbrev_form;
|
|
abbrev_name = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
|
|
abbrev_ptr += bytes_read;
|
|
abbrev_form = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
|
|
abbrev_ptr += bytes_read;
|
|
}
|
|
|
|
hash_number = abbrev_number % ABBREV_HASH_SIZE;
|
|
cur_abbrev->next = abbrevs[hash_number];
|
|
abbrevs[hash_number] = cur_abbrev;
|
|
|
|
/* Get next abbreviation.
|
|
Under Irix6 the abbreviations for a compilation unit are not
|
|
always properly terminated with an abbrev number of 0.
|
|
Exit loop if we encounter an abbreviation which we have
|
|
already read (which means we are about to read the abbreviations
|
|
for the next compile unit) or if the end of the abbreviation
|
|
table is reached. */
|
|
if ((unsigned int) (abbrev_ptr - stash->dwarf_abbrev_buffer)
|
|
>= stash->dwarf_abbrev_size)
|
|
break;
|
|
abbrev_number = read_unsigned_leb128 (abfd, abbrev_ptr, &bytes_read);
|
|
abbrev_ptr += bytes_read;
|
|
if (lookup_abbrev (abbrev_number,abbrevs) != NULL)
|
|
break;
|
|
}
|
|
|
|
return abbrevs;
|
|
}
|
|
|
|
/* Read an attribute value described by an attribute form. */
|
|
|
|
static char *
|
|
read_attribute_value (struct attribute *attr,
|
|
unsigned form,
|
|
struct comp_unit *unit,
|
|
char *info_ptr)
|
|
{
|
|
bfd *abfd = unit->abfd;
|
|
unsigned int bytes_read;
|
|
struct dwarf_block *blk;
|
|
bfd_size_type amt;
|
|
|
|
attr->form = (enum dwarf_form) form;
|
|
|
|
switch (form)
|
|
{
|
|
case DW_FORM_addr:
|
|
/* FIXME: DWARF3 draft says DW_FORM_ref_addr is offset_size. */
|
|
case DW_FORM_ref_addr:
|
|
attr->u.val = read_address (unit, info_ptr);
|
|
info_ptr += unit->addr_size;
|
|
break;
|
|
case DW_FORM_block2:
|
|
amt = sizeof (struct dwarf_block);
|
|
blk = bfd_alloc (abfd, amt);
|
|
blk->size = read_2_bytes (abfd, info_ptr);
|
|
info_ptr += 2;
|
|
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
|
|
info_ptr += blk->size;
|
|
attr->u.blk = blk;
|
|
break;
|
|
case DW_FORM_block4:
|
|
amt = sizeof (struct dwarf_block);
|
|
blk = bfd_alloc (abfd, amt);
|
|
blk->size = read_4_bytes (abfd, info_ptr);
|
|
info_ptr += 4;
|
|
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
|
|
info_ptr += blk->size;
|
|
attr->u.blk = blk;
|
|
break;
|
|
case DW_FORM_data2:
|
|
attr->u.val = read_2_bytes (abfd, info_ptr);
|
|
info_ptr += 2;
|
|
break;
|
|
case DW_FORM_data4:
|
|
attr->u.val = read_4_bytes (abfd, info_ptr);
|
|
info_ptr += 4;
|
|
break;
|
|
case DW_FORM_data8:
|
|
attr->u.val = read_8_bytes (abfd, info_ptr);
|
|
info_ptr += 8;
|
|
break;
|
|
case DW_FORM_string:
|
|
attr->u.str = read_string (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
break;
|
|
case DW_FORM_strp:
|
|
attr->u.str = read_indirect_string (unit, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
break;
|
|
case DW_FORM_block:
|
|
amt = sizeof (struct dwarf_block);
|
|
blk = bfd_alloc (abfd, amt);
|
|
blk->size = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
|
|
info_ptr += blk->size;
|
|
attr->u.blk = blk;
|
|
break;
|
|
case DW_FORM_block1:
|
|
amt = sizeof (struct dwarf_block);
|
|
blk = bfd_alloc (abfd, amt);
|
|
blk->size = read_1_byte (abfd, info_ptr);
|
|
info_ptr += 1;
|
|
blk->data = read_n_bytes (abfd, info_ptr, blk->size);
|
|
info_ptr += blk->size;
|
|
attr->u.blk = blk;
|
|
break;
|
|
case DW_FORM_data1:
|
|
attr->u.val = read_1_byte (abfd, info_ptr);
|
|
info_ptr += 1;
|
|
break;
|
|
case DW_FORM_flag:
|
|
attr->u.val = read_1_byte (abfd, info_ptr);
|
|
info_ptr += 1;
|
|
break;
|
|
case DW_FORM_sdata:
|
|
attr->u.sval = read_signed_leb128 (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
break;
|
|
case DW_FORM_udata:
|
|
attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
break;
|
|
case DW_FORM_ref1:
|
|
attr->u.val = read_1_byte (abfd, info_ptr);
|
|
info_ptr += 1;
|
|
break;
|
|
case DW_FORM_ref2:
|
|
attr->u.val = read_2_bytes (abfd, info_ptr);
|
|
info_ptr += 2;
|
|
break;
|
|
case DW_FORM_ref4:
|
|
attr->u.val = read_4_bytes (abfd, info_ptr);
|
|
info_ptr += 4;
|
|
break;
|
|
case DW_FORM_ref8:
|
|
attr->u.val = read_8_bytes (abfd, info_ptr);
|
|
info_ptr += 8;
|
|
break;
|
|
case DW_FORM_ref_udata:
|
|
attr->u.val = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
break;
|
|
case DW_FORM_indirect:
|
|
form = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
info_ptr = read_attribute_value (attr, form, unit, info_ptr);
|
|
break;
|
|
default:
|
|
(*_bfd_error_handler) (_("Dwarf Error: Invalid or unhandled FORM value: %u."),
|
|
form);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
}
|
|
return info_ptr;
|
|
}
|
|
|
|
/* Read an attribute described by an abbreviated attribute. */
|
|
|
|
static char *
|
|
read_attribute (struct attribute *attr,
|
|
struct attr_abbrev *abbrev,
|
|
struct comp_unit *unit,
|
|
char *info_ptr)
|
|
{
|
|
attr->name = abbrev->name;
|
|
info_ptr = read_attribute_value (attr, abbrev->form, unit, info_ptr);
|
|
return info_ptr;
|
|
}
|
|
|
|
/* Source line information table routines. */
|
|
|
|
#define FILE_ALLOC_CHUNK 5
|
|
#define DIR_ALLOC_CHUNK 5
|
|
|
|
struct line_info
|
|
{
|
|
struct line_info* prev_line;
|
|
bfd_vma address;
|
|
char* filename;
|
|
unsigned int line;
|
|
unsigned int column;
|
|
int end_sequence; /* End of (sequential) code sequence. */
|
|
};
|
|
|
|
struct fileinfo
|
|
{
|
|
char *name;
|
|
unsigned int dir;
|
|
unsigned int time;
|
|
unsigned int size;
|
|
};
|
|
|
|
struct line_info_table
|
|
{
|
|
bfd* abfd;
|
|
unsigned int num_files;
|
|
unsigned int num_dirs;
|
|
char* comp_dir;
|
|
char** dirs;
|
|
struct fileinfo* files;
|
|
struct line_info* last_line; /* largest VMA */
|
|
struct line_info* lcl_head; /* local head; used in 'add_line_info' */
|
|
};
|
|
|
|
struct funcinfo
|
|
{
|
|
struct funcinfo *prev_func;
|
|
char* name;
|
|
bfd_vma low;
|
|
bfd_vma high;
|
|
};
|
|
|
|
/* Adds a new entry to the line_info list in the line_info_table, ensuring
|
|
that the list is sorted. Note that the line_info list is sorted from
|
|
highest to lowest VMA (with possible duplicates); that is,
|
|
line_info->prev_line always accesses an equal or smaller VMA. */
|
|
|
|
static void
|
|
add_line_info (struct line_info_table *table,
|
|
bfd_vma address,
|
|
char *filename,
|
|
unsigned int line,
|
|
unsigned int column,
|
|
int end_sequence)
|
|
{
|
|
bfd_size_type amt = sizeof (struct line_info);
|
|
struct line_info* info = bfd_alloc (table->abfd, amt);
|
|
|
|
/* Find the correct location for 'info'. Normally we will receive
|
|
new line_info data 1) in order and 2) with increasing VMAs.
|
|
However some compilers break the rules (cf. decode_line_info) and
|
|
so we include some heuristics for quickly finding the correct
|
|
location for 'info'. In particular, these heuristics optimize for
|
|
the common case in which the VMA sequence that we receive is a
|
|
list of locally sorted VMAs such as
|
|
p...z a...j (where a < j < p < z)
|
|
|
|
Note: table->lcl_head is used to head an *actual* or *possible*
|
|
sequence within the list (such as a...j) that is not directly
|
|
headed by table->last_line
|
|
|
|
Note: we may receive duplicate entries from 'decode_line_info'. */
|
|
|
|
while (1)
|
|
if (!table->last_line
|
|
|| address >= table->last_line->address)
|
|
{
|
|
/* Normal case: add 'info' to the beginning of the list */
|
|
info->prev_line = table->last_line;
|
|
table->last_line = info;
|
|
|
|
/* lcl_head: initialize to head a *possible* sequence at the end. */
|
|
if (!table->lcl_head)
|
|
table->lcl_head = info;
|
|
break;
|
|
}
|
|
else if (!table->lcl_head->prev_line
|
|
&& table->lcl_head->address > address)
|
|
{
|
|
/* Abnormal but easy: lcl_head is 1) at the *end* of the line
|
|
list and 2) the head of 'info'. */
|
|
info->prev_line = NULL;
|
|
table->lcl_head->prev_line = info;
|
|
break;
|
|
}
|
|
else if (table->lcl_head->prev_line
|
|
&& table->lcl_head->address > address
|
|
&& address >= table->lcl_head->prev_line->address)
|
|
{
|
|
/* Abnormal but easy: lcl_head is 1) in the *middle* of the line
|
|
list and 2) the head of 'info'. */
|
|
info->prev_line = table->lcl_head->prev_line;
|
|
table->lcl_head->prev_line = info;
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
/* Abnormal and hard: Neither 'last_line' nor 'lcl_head' are valid
|
|
heads for 'info'. Reset 'lcl_head' and repeat. */
|
|
struct line_info* li2 = table->last_line; /* always non-NULL */
|
|
struct line_info* li1 = li2->prev_line;
|
|
|
|
while (li1)
|
|
{
|
|
if (li2->address > address && address >= li1->address)
|
|
break;
|
|
|
|
li2 = li1; /* always non-NULL */
|
|
li1 = li1->prev_line;
|
|
}
|
|
table->lcl_head = li2;
|
|
}
|
|
|
|
/* Set member data of 'info'. */
|
|
info->address = address;
|
|
info->line = line;
|
|
info->column = column;
|
|
info->end_sequence = end_sequence;
|
|
|
|
if (filename && filename[0])
|
|
{
|
|
info->filename = bfd_alloc (table->abfd, strlen (filename) + 1);
|
|
if (info->filename)
|
|
strcpy (info->filename, filename);
|
|
}
|
|
else
|
|
info->filename = NULL;
|
|
}
|
|
|
|
/* Extract a fully qualified filename from a line info table.
|
|
The returned string has been malloc'ed and it is the caller's
|
|
responsibility to free it. */
|
|
|
|
static char *
|
|
concat_filename (struct line_info_table *table, unsigned int file)
|
|
{
|
|
char* filename;
|
|
|
|
if (file - 1 >= table->num_files)
|
|
{
|
|
(*_bfd_error_handler)
|
|
(_("Dwarf Error: mangled line number section (bad file number)."));
|
|
return strdup ("<unknown>");
|
|
}
|
|
|
|
filename = table->files[file - 1].name;
|
|
|
|
if (! IS_ABSOLUTE_PATH (filename))
|
|
{
|
|
char* dirname = (table->files[file - 1].dir
|
|
? table->dirs[table->files[file - 1].dir - 1]
|
|
: table->comp_dir);
|
|
|
|
/* Not all tools set DW_AT_comp_dir, so dirname may be unknown.
|
|
The best we can do is return the filename part. */
|
|
if (dirname != NULL)
|
|
{
|
|
unsigned int len = strlen (dirname) + strlen (filename) + 2;
|
|
char * name;
|
|
|
|
name = bfd_malloc (len);
|
|
if (name)
|
|
sprintf (name, "%s/%s", dirname, filename);
|
|
return name;
|
|
}
|
|
}
|
|
|
|
return strdup (filename);
|
|
}
|
|
|
|
static void
|
|
arange_add (struct comp_unit *unit, bfd_vma low_pc, bfd_vma high_pc)
|
|
{
|
|
struct arange *arange;
|
|
|
|
/* First see if we can cheaply extend an existing range. */
|
|
arange = &unit->arange;
|
|
|
|
do
|
|
{
|
|
if (low_pc == arange->high)
|
|
{
|
|
arange->high = high_pc;
|
|
return;
|
|
}
|
|
if (high_pc == arange->low)
|
|
{
|
|
arange->low = low_pc;
|
|
return;
|
|
}
|
|
arange = arange->next;
|
|
}
|
|
while (arange);
|
|
|
|
if (unit->arange.high == 0)
|
|
{
|
|
/* This is the first address range: store it in unit->arange. */
|
|
unit->arange.next = 0;
|
|
unit->arange.low = low_pc;
|
|
unit->arange.high = high_pc;
|
|
return;
|
|
}
|
|
|
|
/* Need to allocate a new arange and insert it into the arange list. */
|
|
arange = bfd_zalloc (unit->abfd, sizeof (*arange));
|
|
arange->low = low_pc;
|
|
arange->high = high_pc;
|
|
|
|
arange->next = unit->arange.next;
|
|
unit->arange.next = arange;
|
|
}
|
|
|
|
/* Decode the line number information for UNIT. */
|
|
|
|
static struct line_info_table*
|
|
decode_line_info (struct comp_unit *unit, struct dwarf2_debug *stash)
|
|
{
|
|
bfd *abfd = unit->abfd;
|
|
struct line_info_table* table;
|
|
char *line_ptr;
|
|
char *line_end;
|
|
struct line_head lh;
|
|
unsigned int i, bytes_read, offset_size;
|
|
char *cur_file, *cur_dir;
|
|
unsigned char op_code, extended_op, adj_opcode;
|
|
bfd_size_type amt;
|
|
|
|
if (! stash->dwarf_line_buffer)
|
|
{
|
|
asection *msec;
|
|
|
|
msec = bfd_get_section_by_name (abfd, ".debug_line");
|
|
if (! msec)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: Can't find .debug_line section."));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
stash->dwarf_line_size = msec->size;
|
|
stash->dwarf_line_buffer
|
|
= bfd_simple_get_relocated_section_contents (abfd, msec, NULL,
|
|
stash->syms);
|
|
if (! stash->dwarf_line_buffer)
|
|
return 0;
|
|
}
|
|
|
|
/* It is possible to get a bad value for the line_offset. Validate
|
|
it here so that we won't get a segfault below. */
|
|
if (unit->line_offset >= stash->dwarf_line_size)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: Line offset (%lu) greater than or equal to .debug_line size (%lu)."),
|
|
unit->line_offset, stash->dwarf_line_size);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
amt = sizeof (struct line_info_table);
|
|
table = bfd_alloc (abfd, amt);
|
|
table->abfd = abfd;
|
|
table->comp_dir = unit->comp_dir;
|
|
|
|
table->num_files = 0;
|
|
table->files = NULL;
|
|
|
|
table->num_dirs = 0;
|
|
table->dirs = NULL;
|
|
|
|
table->files = NULL;
|
|
table->last_line = NULL;
|
|
table->lcl_head = NULL;
|
|
|
|
line_ptr = stash->dwarf_line_buffer + unit->line_offset;
|
|
|
|
/* Read in the prologue. */
|
|
lh.total_length = read_4_bytes (abfd, line_ptr);
|
|
line_ptr += 4;
|
|
offset_size = 4;
|
|
if (lh.total_length == 0xffffffff)
|
|
{
|
|
lh.total_length = read_8_bytes (abfd, line_ptr);
|
|
line_ptr += 8;
|
|
offset_size = 8;
|
|
}
|
|
else if (lh.total_length == 0 && unit->addr_size == 8)
|
|
{
|
|
/* Handle (non-standard) 64-bit DWARF2 formats. */
|
|
lh.total_length = read_4_bytes (abfd, line_ptr);
|
|
line_ptr += 4;
|
|
offset_size = 8;
|
|
}
|
|
line_end = line_ptr + lh.total_length;
|
|
lh.version = read_2_bytes (abfd, line_ptr);
|
|
line_ptr += 2;
|
|
if (offset_size == 4)
|
|
lh.prologue_length = read_4_bytes (abfd, line_ptr);
|
|
else
|
|
lh.prologue_length = read_8_bytes (abfd, line_ptr);
|
|
line_ptr += offset_size;
|
|
lh.minimum_instruction_length = read_1_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
lh.default_is_stmt = read_1_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
lh.line_base = read_1_signed_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
lh.line_range = read_1_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
lh.opcode_base = read_1_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
amt = lh.opcode_base * sizeof (unsigned char);
|
|
lh.standard_opcode_lengths = bfd_alloc (abfd, amt);
|
|
|
|
lh.standard_opcode_lengths[0] = 1;
|
|
|
|
for (i = 1; i < lh.opcode_base; ++i)
|
|
{
|
|
lh.standard_opcode_lengths[i] = read_1_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
}
|
|
|
|
/* Read directory table. */
|
|
while ((cur_dir = read_string (abfd, line_ptr, &bytes_read)) != NULL)
|
|
{
|
|
line_ptr += bytes_read;
|
|
|
|
if ((table->num_dirs % DIR_ALLOC_CHUNK) == 0)
|
|
{
|
|
amt = table->num_dirs + DIR_ALLOC_CHUNK;
|
|
amt *= sizeof (char *);
|
|
table->dirs = bfd_realloc (table->dirs, amt);
|
|
if (! table->dirs)
|
|
return 0;
|
|
}
|
|
|
|
table->dirs[table->num_dirs++] = cur_dir;
|
|
}
|
|
|
|
line_ptr += bytes_read;
|
|
|
|
/* Read file name table. */
|
|
while ((cur_file = read_string (abfd, line_ptr, &bytes_read)) != NULL)
|
|
{
|
|
line_ptr += bytes_read;
|
|
|
|
if ((table->num_files % FILE_ALLOC_CHUNK) == 0)
|
|
{
|
|
amt = table->num_files + FILE_ALLOC_CHUNK;
|
|
amt *= sizeof (struct fileinfo);
|
|
table->files = bfd_realloc (table->files, amt);
|
|
if (! table->files)
|
|
return 0;
|
|
}
|
|
|
|
table->files[table->num_files].name = cur_file;
|
|
table->files[table->num_files].dir =
|
|
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
table->files[table->num_files].time =
|
|
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
table->files[table->num_files].size =
|
|
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
table->num_files++;
|
|
}
|
|
|
|
line_ptr += bytes_read;
|
|
|
|
/* Read the statement sequences until there's nothing left. */
|
|
while (line_ptr < line_end)
|
|
{
|
|
/* State machine registers. */
|
|
bfd_vma address = 0;
|
|
char * filename = table->num_files ? concat_filename (table, 1) : NULL;
|
|
unsigned int line = 1;
|
|
unsigned int column = 0;
|
|
int is_stmt = lh.default_is_stmt;
|
|
int basic_block = 0;
|
|
int end_sequence = 0;
|
|
/* eraxxon@alumni.rice.edu: Against the DWARF2 specs, some
|
|
compilers generate address sequences that are wildly out of
|
|
order using DW_LNE_set_address (e.g. Intel C++ 6.0 compiler
|
|
for ia64-Linux). Thus, to determine the low and high
|
|
address, we must compare on every DW_LNS_copy, etc. */
|
|
bfd_vma low_pc = 0;
|
|
bfd_vma high_pc = 0;
|
|
|
|
/* Decode the table. */
|
|
while (! end_sequence)
|
|
{
|
|
op_code = read_1_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
|
|
if (op_code >= lh.opcode_base)
|
|
{
|
|
/* Special operand. */
|
|
adj_opcode = op_code - lh.opcode_base;
|
|
address += (adj_opcode / lh.line_range)
|
|
* lh.minimum_instruction_length;
|
|
line += lh.line_base + (adj_opcode % lh.line_range);
|
|
/* Append row to matrix using current values. */
|
|
add_line_info (table, address, filename, line, column, 0);
|
|
basic_block = 1;
|
|
if (low_pc == 0 || address < low_pc)
|
|
low_pc = address;
|
|
if (address > high_pc)
|
|
high_pc = address;
|
|
}
|
|
else switch (op_code)
|
|
{
|
|
case DW_LNS_extended_op:
|
|
/* Ignore length. */
|
|
line_ptr += 1;
|
|
extended_op = read_1_byte (abfd, line_ptr);
|
|
line_ptr += 1;
|
|
|
|
switch (extended_op)
|
|
{
|
|
case DW_LNE_end_sequence:
|
|
end_sequence = 1;
|
|
add_line_info (table, address, filename, line, column,
|
|
end_sequence);
|
|
if (low_pc == 0 || address < low_pc)
|
|
low_pc = address;
|
|
if (address > high_pc)
|
|
high_pc = address;
|
|
arange_add (unit, low_pc, high_pc);
|
|
break;
|
|
case DW_LNE_set_address:
|
|
address = read_address (unit, line_ptr);
|
|
line_ptr += unit->addr_size;
|
|
break;
|
|
case DW_LNE_define_file:
|
|
cur_file = read_string (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
if ((table->num_files % FILE_ALLOC_CHUNK) == 0)
|
|
{
|
|
amt = table->num_files + FILE_ALLOC_CHUNK;
|
|
amt *= sizeof (struct fileinfo);
|
|
table->files = bfd_realloc (table->files, amt);
|
|
if (! table->files)
|
|
return 0;
|
|
}
|
|
table->files[table->num_files].name = cur_file;
|
|
table->files[table->num_files].dir =
|
|
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
table->files[table->num_files].time =
|
|
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
table->files[table->num_files].size =
|
|
read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
table->num_files++;
|
|
break;
|
|
default:
|
|
(*_bfd_error_handler) (_("Dwarf Error: mangled line number section."));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
break;
|
|
case DW_LNS_copy:
|
|
add_line_info (table, address, filename, line, column, 0);
|
|
basic_block = 0;
|
|
if (low_pc == 0 || address < low_pc)
|
|
low_pc = address;
|
|
if (address > high_pc)
|
|
high_pc = address;
|
|
break;
|
|
case DW_LNS_advance_pc:
|
|
address += lh.minimum_instruction_length
|
|
* read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
break;
|
|
case DW_LNS_advance_line:
|
|
line += read_signed_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
break;
|
|
case DW_LNS_set_file:
|
|
{
|
|
unsigned int file;
|
|
|
|
/* The file and directory tables are 0
|
|
based, the references are 1 based. */
|
|
file = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
if (filename)
|
|
free (filename);
|
|
filename = concat_filename (table, file);
|
|
break;
|
|
}
|
|
case DW_LNS_set_column:
|
|
column = read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
break;
|
|
case DW_LNS_negate_stmt:
|
|
is_stmt = (!is_stmt);
|
|
break;
|
|
case DW_LNS_set_basic_block:
|
|
basic_block = 1;
|
|
break;
|
|
case DW_LNS_const_add_pc:
|
|
address += lh.minimum_instruction_length
|
|
* ((255 - lh.opcode_base) / lh.line_range);
|
|
break;
|
|
case DW_LNS_fixed_advance_pc:
|
|
address += read_2_bytes (abfd, line_ptr);
|
|
line_ptr += 2;
|
|
break;
|
|
default:
|
|
{
|
|
int i;
|
|
|
|
/* Unknown standard opcode, ignore it. */
|
|
for (i = 0; i < lh.standard_opcode_lengths[op_code]; i++)
|
|
{
|
|
(void) read_unsigned_leb128 (abfd, line_ptr, &bytes_read);
|
|
line_ptr += bytes_read;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (filename)
|
|
free (filename);
|
|
}
|
|
|
|
return table;
|
|
}
|
|
|
|
/* If ADDR is within TABLE set the output parameters and return TRUE,
|
|
otherwise return FALSE. The output parameters, FILENAME_PTR and
|
|
LINENUMBER_PTR, are pointers to the objects to be filled in. */
|
|
|
|
static bfd_boolean
|
|
lookup_address_in_line_info_table (struct line_info_table *table,
|
|
bfd_vma addr,
|
|
struct funcinfo *function,
|
|
const char **filename_ptr,
|
|
unsigned int *linenumber_ptr)
|
|
{
|
|
/* Note: table->last_line should be a descendingly sorted list. */
|
|
struct line_info* next_line = table->last_line;
|
|
struct line_info* each_line = NULL;
|
|
*filename_ptr = NULL;
|
|
|
|
if (!next_line)
|
|
return FALSE;
|
|
|
|
each_line = next_line->prev_line;
|
|
|
|
/* Check for large addresses */
|
|
if (addr > next_line->address)
|
|
each_line = NULL; /* ensure we skip over the normal case */
|
|
|
|
/* Normal case: search the list; save */
|
|
while (each_line && next_line)
|
|
{
|
|
/* If we have an address match, save this info. This allows us
|
|
to return as good as results as possible for strange debugging
|
|
info. */
|
|
bfd_boolean addr_match = FALSE;
|
|
if (each_line->address <= addr && addr <= next_line->address)
|
|
{
|
|
addr_match = TRUE;
|
|
|
|
/* If this line appears to span functions, and addr is in the
|
|
later function, return the first line of that function instead
|
|
of the last line of the earlier one. This check is for GCC
|
|
2.95, which emits the first line number for a function late. */
|
|
if (function != NULL
|
|
&& each_line->address < function->low
|
|
&& next_line->address > function->low)
|
|
{
|
|
*filename_ptr = next_line->filename;
|
|
*linenumber_ptr = next_line->line;
|
|
}
|
|
else
|
|
{
|
|
*filename_ptr = each_line->filename;
|
|
*linenumber_ptr = each_line->line;
|
|
}
|
|
}
|
|
|
|
if (addr_match && !each_line->end_sequence)
|
|
return TRUE; /* we have definitely found what we want */
|
|
|
|
next_line = each_line;
|
|
each_line = each_line->prev_line;
|
|
}
|
|
|
|
/* At this point each_line is NULL but next_line is not. If we found
|
|
a candidate end-of-sequence point in the loop above, we can return
|
|
that (compatibility with a bug in the Intel compiler); otherwise,
|
|
assuming that we found the containing function for this address in
|
|
this compilation unit, return the first line we have a number for
|
|
(compatibility with GCC 2.95). */
|
|
if (*filename_ptr == NULL && function != NULL)
|
|
{
|
|
*filename_ptr = next_line->filename;
|
|
*linenumber_ptr = next_line->line;
|
|
return TRUE;
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* Function table functions. */
|
|
|
|
/* If ADDR is within TABLE, set FUNCTIONNAME_PTR, and return TRUE. */
|
|
|
|
static bfd_boolean
|
|
lookup_address_in_function_table (struct funcinfo *table,
|
|
bfd_vma addr,
|
|
struct funcinfo **function_ptr,
|
|
const char **functionname_ptr)
|
|
{
|
|
struct funcinfo* each_func;
|
|
|
|
for (each_func = table;
|
|
each_func;
|
|
each_func = each_func->prev_func)
|
|
{
|
|
if (addr >= each_func->low && addr < each_func->high)
|
|
{
|
|
*functionname_ptr = each_func->name;
|
|
*function_ptr = each_func;
|
|
return TRUE;
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* DWARF2 Compilation unit functions. */
|
|
|
|
/* Scan over each die in a comp. unit looking for functions to add
|
|
to the function table. */
|
|
|
|
static bfd_boolean
|
|
scan_unit_for_functions (struct comp_unit *unit)
|
|
{
|
|
bfd *abfd = unit->abfd;
|
|
char *info_ptr = unit->first_child_die_ptr;
|
|
int nesting_level = 1;
|
|
|
|
while (nesting_level)
|
|
{
|
|
unsigned int abbrev_number, bytes_read, i;
|
|
struct abbrev_info *abbrev;
|
|
struct attribute attr;
|
|
struct funcinfo *func;
|
|
char* name = 0;
|
|
|
|
abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
|
|
if (! abbrev_number)
|
|
{
|
|
nesting_level--;
|
|
continue;
|
|
}
|
|
|
|
abbrev = lookup_abbrev (abbrev_number,unit->abbrevs);
|
|
if (! abbrev)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."),
|
|
abbrev_number);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return FALSE;
|
|
}
|
|
|
|
if (abbrev->tag == DW_TAG_subprogram)
|
|
{
|
|
bfd_size_type amt = sizeof (struct funcinfo);
|
|
func = bfd_zalloc (abfd, amt);
|
|
func->prev_func = unit->function_table;
|
|
unit->function_table = func;
|
|
}
|
|
else
|
|
func = NULL;
|
|
|
|
for (i = 0; i < abbrev->num_attrs; ++i)
|
|
{
|
|
info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr);
|
|
|
|
if (func)
|
|
{
|
|
switch (attr.name)
|
|
{
|
|
case DW_AT_name:
|
|
|
|
name = attr.u.str;
|
|
|
|
/* Prefer DW_AT_MIPS_linkage_name over DW_AT_name. */
|
|
if (func->name == NULL)
|
|
func->name = attr.u.str;
|
|
break;
|
|
|
|
case DW_AT_MIPS_linkage_name:
|
|
func->name = attr.u.str;
|
|
break;
|
|
|
|
case DW_AT_low_pc:
|
|
func->low = attr.u.val;
|
|
break;
|
|
|
|
case DW_AT_high_pc:
|
|
func->high = attr.u.val;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
switch (attr.name)
|
|
{
|
|
case DW_AT_name:
|
|
name = attr.u.str;
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (abbrev->has_children)
|
|
nesting_level++;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
/* Parse a DWARF2 compilation unit starting at INFO_PTR. This
|
|
includes the compilation unit header that proceeds the DIE's, but
|
|
does not include the length field that precedes each compilation
|
|
unit header. END_PTR points one past the end of this comp unit.
|
|
OFFSET_SIZE is the size of DWARF2 offsets (either 4 or 8 bytes).
|
|
|
|
This routine does not read the whole compilation unit; only enough
|
|
to get to the line number information for the compilation unit. */
|
|
|
|
static struct comp_unit *
|
|
parse_comp_unit (bfd *abfd,
|
|
struct dwarf2_debug *stash,
|
|
bfd_vma unit_length,
|
|
unsigned int offset_size)
|
|
{
|
|
struct comp_unit* unit;
|
|
unsigned int version;
|
|
bfd_uint64_t abbrev_offset = 0;
|
|
unsigned int addr_size;
|
|
struct abbrev_info** abbrevs;
|
|
unsigned int abbrev_number, bytes_read, i;
|
|
struct abbrev_info *abbrev;
|
|
struct attribute attr;
|
|
char *info_ptr = stash->info_ptr;
|
|
char *end_ptr = info_ptr + unit_length;
|
|
bfd_size_type amt;
|
|
|
|
version = read_2_bytes (abfd, info_ptr);
|
|
info_ptr += 2;
|
|
BFD_ASSERT (offset_size == 4 || offset_size == 8);
|
|
if (offset_size == 4)
|
|
abbrev_offset = read_4_bytes (abfd, info_ptr);
|
|
else
|
|
abbrev_offset = read_8_bytes (abfd, info_ptr);
|
|
info_ptr += offset_size;
|
|
addr_size = read_1_byte (abfd, info_ptr);
|
|
info_ptr += 1;
|
|
|
|
if (version != 2)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: found dwarf version '%u', this reader only handles version 2 information."), version);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
if (addr_size > sizeof (bfd_vma))
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: found address size '%u', this reader can not handle sizes greater than '%u'."),
|
|
addr_size,
|
|
(unsigned int) sizeof (bfd_vma));
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
if (addr_size != 2 && addr_size != 4 && addr_size != 8)
|
|
{
|
|
(*_bfd_error_handler) ("Dwarf Error: found address size '%u', this reader can only handle address sizes '2', '4' and '8'.", addr_size);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
/* Read the abbrevs for this compilation unit into a table. */
|
|
abbrevs = read_abbrevs (abfd, abbrev_offset, stash);
|
|
if (! abbrevs)
|
|
return 0;
|
|
|
|
abbrev_number = read_unsigned_leb128 (abfd, info_ptr, &bytes_read);
|
|
info_ptr += bytes_read;
|
|
if (! abbrev_number)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: Bad abbrev number: %u."),
|
|
abbrev_number);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
abbrev = lookup_abbrev (abbrev_number, abbrevs);
|
|
if (! abbrev)
|
|
{
|
|
(*_bfd_error_handler) (_("Dwarf Error: Could not find abbrev number %u."),
|
|
abbrev_number);
|
|
bfd_set_error (bfd_error_bad_value);
|
|
return 0;
|
|
}
|
|
|
|
amt = sizeof (struct comp_unit);
|
|
unit = bfd_zalloc (abfd, amt);
|
|
unit->abfd = abfd;
|
|
unit->addr_size = addr_size;
|
|
unit->offset_size = offset_size;
|
|
unit->abbrevs = abbrevs;
|
|
unit->end_ptr = end_ptr;
|
|
unit->stash = stash;
|
|
|
|
for (i = 0; i < abbrev->num_attrs; ++i)
|
|
{
|
|
info_ptr = read_attribute (&attr, &abbrev->attrs[i], unit, info_ptr);
|
|
|
|
/* Store the data if it is of an attribute we want to keep in a
|
|
partial symbol table. */
|
|
switch (attr.name)
|
|
{
|
|
case DW_AT_stmt_list:
|
|
unit->stmtlist = 1;
|
|
unit->line_offset = attr.u.val;
|
|
break;
|
|
|
|
case DW_AT_name:
|
|
unit->name = attr.u.str;
|
|
break;
|
|
|
|
case DW_AT_low_pc:
|
|
unit->arange.low = attr.u.val;
|
|
break;
|
|
|
|
case DW_AT_high_pc:
|
|
unit->arange.high = attr.u.val;
|
|
break;
|
|
|
|
case DW_AT_comp_dir:
|
|
{
|
|
char* comp_dir = attr.u.str;
|
|
if (comp_dir)
|
|
{
|
|
/* Irix 6.2 native cc prepends <machine>.: to the compilation
|
|
directory, get rid of it. */
|
|
char *cp = strchr (comp_dir, ':');
|
|
|
|
if (cp && cp != comp_dir && cp[-1] == '.' && cp[1] == '/')
|
|
comp_dir = cp + 1;
|
|
}
|
|
unit->comp_dir = comp_dir;
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
|
|
unit->first_child_die_ptr = info_ptr;
|
|
return unit;
|
|
}
|
|
|
|
/* Return TRUE if UNIT contains the address given by ADDR. */
|
|
|
|
static bfd_boolean
|
|
comp_unit_contains_address (struct comp_unit *unit, bfd_vma addr)
|
|
{
|
|
struct arange *arange;
|
|
|
|
if (unit->error)
|
|
return FALSE;
|
|
|
|
arange = &unit->arange;
|
|
do
|
|
{
|
|
if (addr >= arange->low && addr < arange->high)
|
|
return TRUE;
|
|
arange = arange->next;
|
|
}
|
|
while (arange);
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
/* If UNIT contains ADDR, set the output parameters to the values for
|
|
the line containing ADDR. The output parameters, FILENAME_PTR,
|
|
FUNCTIONNAME_PTR, and LINENUMBER_PTR, are pointers to the objects
|
|
to be filled in.
|
|
|
|
Return TRUE if UNIT contains ADDR, and no errors were encountered;
|
|
FALSE otherwise. */
|
|
|
|
static bfd_boolean
|
|
comp_unit_find_nearest_line (struct comp_unit *unit,
|
|
bfd_vma addr,
|
|
const char **filename_ptr,
|
|
const char **functionname_ptr,
|
|
unsigned int *linenumber_ptr,
|
|
struct dwarf2_debug *stash)
|
|
{
|
|
bfd_boolean line_p;
|
|
bfd_boolean func_p;
|
|
struct funcinfo *function;
|
|
|
|
if (unit->error)
|
|
return FALSE;
|
|
|
|
if (! unit->line_table)
|
|
{
|
|
if (! unit->stmtlist)
|
|
{
|
|
unit->error = 1;
|
|
return FALSE;
|
|
}
|
|
|
|
unit->line_table = decode_line_info (unit, stash);
|
|
|
|
if (! unit->line_table)
|
|
{
|
|
unit->error = 1;
|
|
return FALSE;
|
|
}
|
|
|
|
if (unit->first_child_die_ptr < unit->end_ptr
|
|
&& ! scan_unit_for_functions (unit))
|
|
{
|
|
unit->error = 1;
|
|
return FALSE;
|
|
}
|
|
}
|
|
|
|
function = NULL;
|
|
func_p = lookup_address_in_function_table (unit->function_table, addr,
|
|
&function, functionname_ptr);
|
|
line_p = lookup_address_in_line_info_table (unit->line_table, addr,
|
|
function, filename_ptr,
|
|
linenumber_ptr);
|
|
return line_p || func_p;
|
|
}
|
|
|
|
/* Locate a section in a BFD containing debugging info. The search starts
|
|
from the section after AFTER_SEC, or from the first section in the BFD if
|
|
AFTER_SEC is NULL. The search works by examining the names of the
|
|
sections. There are two permissiable names. The first is .debug_info.
|
|
This is the standard DWARF2 name. The second is a prefix .gnu.linkonce.wi.
|
|
This is a variation on the .debug_info section which has a checksum
|
|
describing the contents appended onto the name. This allows the linker to
|
|
identify and discard duplicate debugging sections for different
|
|
compilation units. */
|
|
#define DWARF2_DEBUG_INFO ".debug_info"
|
|
#define GNU_LINKONCE_INFO ".gnu.linkonce.wi."
|
|
|
|
static asection *
|
|
find_debug_info (bfd *abfd, asection *after_sec)
|
|
{
|
|
asection * msec;
|
|
|
|
if (after_sec)
|
|
msec = after_sec->next;
|
|
else
|
|
msec = abfd->sections;
|
|
|
|
while (msec)
|
|
{
|
|
if (strcmp (msec->name, DWARF2_DEBUG_INFO) == 0)
|
|
return msec;
|
|
|
|
if (strncmp (msec->name, GNU_LINKONCE_INFO, strlen (GNU_LINKONCE_INFO)) == 0)
|
|
return msec;
|
|
|
|
msec = msec->next;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
/* The DWARF2 version of find_nearest_line. Return TRUE if the line
|
|
is found without error. ADDR_SIZE is the number of bytes in the
|
|
initial .debug_info length field and in the abbreviation offset.
|
|
You may use zero to indicate that the default value should be
|
|
used. */
|
|
|
|
bfd_boolean
|
|
_bfd_dwarf2_find_nearest_line (bfd *abfd,
|
|
asection *section,
|
|
asymbol **symbols,
|
|
bfd_vma offset,
|
|
const char **filename_ptr,
|
|
const char **functionname_ptr,
|
|
unsigned int *linenumber_ptr,
|
|
unsigned int addr_size,
|
|
void **pinfo)
|
|
{
|
|
/* Read each compilation unit from the section .debug_info, and check
|
|
to see if it contains the address we are searching for. If yes,
|
|
lookup the address, and return the line number info. If no, go
|
|
on to the next compilation unit.
|
|
|
|
We keep a list of all the previously read compilation units, and
|
|
a pointer to the next un-read compilation unit. Check the
|
|
previously read units before reading more. */
|
|
struct dwarf2_debug *stash = *pinfo;
|
|
|
|
/* What address are we looking for? */
|
|
bfd_vma addr = offset + section->vma;
|
|
|
|
struct comp_unit* each;
|
|
|
|
*filename_ptr = NULL;
|
|
*functionname_ptr = NULL;
|
|
*linenumber_ptr = 0;
|
|
|
|
/* The DWARF2 spec says that the initial length field, and the
|
|
offset of the abbreviation table, should both be 4-byte values.
|
|
However, some compilers do things differently. */
|
|
if (addr_size == 0)
|
|
addr_size = 4;
|
|
BFD_ASSERT (addr_size == 4 || addr_size == 8);
|
|
|
|
if (! stash)
|
|
{
|
|
bfd_size_type total_size;
|
|
asection *msec;
|
|
bfd_size_type amt = sizeof (struct dwarf2_debug);
|
|
|
|
stash = bfd_zalloc (abfd, amt);
|
|
if (! stash)
|
|
return FALSE;
|
|
|
|
*pinfo = stash;
|
|
|
|
msec = find_debug_info (abfd, NULL);
|
|
if (! msec)
|
|
/* No dwarf2 info. Note that at this point the stash
|
|
has been allocated, but contains zeros, this lets
|
|
future calls to this function fail quicker. */
|
|
return FALSE;
|
|
|
|
/* There can be more than one DWARF2 info section in a BFD these days.
|
|
Read them all in and produce one large stash. We do this in two
|
|
passes - in the first pass we just accumulate the section sizes.
|
|
In the second pass we read in the section's contents. The allows
|
|
us to avoid reallocing the data as we add sections to the stash. */
|
|
for (total_size = 0; msec; msec = find_debug_info (abfd, msec))
|
|
total_size += msec->size;
|
|
|
|
stash->info_ptr = bfd_alloc (abfd, total_size);
|
|
if (stash->info_ptr == NULL)
|
|
return FALSE;
|
|
|
|
stash->info_ptr_end = stash->info_ptr;
|
|
|
|
for (msec = find_debug_info (abfd, NULL);
|
|
msec;
|
|
msec = find_debug_info (abfd, msec))
|
|
{
|
|
bfd_size_type size;
|
|
bfd_size_type start;
|
|
|
|
size = msec->size;
|
|
if (size == 0)
|
|
continue;
|
|
|
|
start = stash->info_ptr_end - stash->info_ptr;
|
|
|
|
if ((bfd_simple_get_relocated_section_contents
|
|
(abfd, msec, stash->info_ptr + start, symbols)) == NULL)
|
|
continue;
|
|
|
|
stash->info_ptr_end = stash->info_ptr + start + size;
|
|
}
|
|
|
|
BFD_ASSERT (stash->info_ptr_end == stash->info_ptr + total_size);
|
|
|
|
stash->sec = find_debug_info (abfd, NULL);
|
|
stash->sec_info_ptr = stash->info_ptr;
|
|
stash->syms = symbols;
|
|
}
|
|
|
|
/* A null info_ptr indicates that there is no dwarf2 info
|
|
(or that an error occured while setting up the stash). */
|
|
if (! stash->info_ptr)
|
|
return FALSE;
|
|
|
|
/* Check the previously read comp. units first. */
|
|
for (each = stash->all_comp_units; each; each = each->next_unit)
|
|
if (comp_unit_contains_address (each, addr))
|
|
return comp_unit_find_nearest_line (each, addr, filename_ptr,
|
|
functionname_ptr, linenumber_ptr,
|
|
stash);
|
|
|
|
/* Read each remaining comp. units checking each as they are read. */
|
|
while (stash->info_ptr < stash->info_ptr_end)
|
|
{
|
|
bfd_vma length;
|
|
bfd_boolean found;
|
|
unsigned int offset_size = addr_size;
|
|
|
|
length = read_4_bytes (abfd, stash->info_ptr);
|
|
/* A 0xffffff length is the DWARF3 way of indicating we use
|
|
64-bit offsets, instead of 32-bit offsets. */
|
|
if (length == 0xffffffff)
|
|
{
|
|
offset_size = 8;
|
|
length = read_8_bytes (abfd, stash->info_ptr + 4);
|
|
stash->info_ptr += 12;
|
|
}
|
|
/* A zero length is the IRIX way of indicating 64-bit offsets,
|
|
mostly because the 64-bit length will generally fit in 32
|
|
bits, and the endianness helps. */
|
|
else if (length == 0)
|
|
{
|
|
offset_size = 8;
|
|
length = read_4_bytes (abfd, stash->info_ptr + 4);
|
|
stash->info_ptr += 8;
|
|
}
|
|
/* In the absence of the hints above, we assume addr_size-sized
|
|
offsets, for backward-compatibility with pre-DWARF3 64-bit
|
|
platforms. */
|
|
else if (addr_size == 8)
|
|
{
|
|
length = read_8_bytes (abfd, stash->info_ptr);
|
|
stash->info_ptr += 8;
|
|
}
|
|
else
|
|
stash->info_ptr += 4;
|
|
|
|
if (length > 0)
|
|
{
|
|
each = parse_comp_unit (abfd, stash, length, offset_size);
|
|
stash->info_ptr += length;
|
|
|
|
if ((bfd_vma) (stash->info_ptr - stash->sec_info_ptr)
|
|
== stash->sec->size)
|
|
{
|
|
stash->sec = find_debug_info (abfd, stash->sec);
|
|
stash->sec_info_ptr = stash->info_ptr;
|
|
}
|
|
|
|
if (each)
|
|
{
|
|
each->next_unit = stash->all_comp_units;
|
|
stash->all_comp_units = each;
|
|
|
|
/* DW_AT_low_pc and DW_AT_high_pc are optional for
|
|
compilation units. If we don't have them (i.e.,
|
|
unit->high == 0), we need to consult the line info
|
|
table to see if a compilation unit contains the given
|
|
address. */
|
|
if (each->arange.high > 0)
|
|
{
|
|
if (comp_unit_contains_address (each, addr))
|
|
return comp_unit_find_nearest_line (each, addr,
|
|
filename_ptr,
|
|
functionname_ptr,
|
|
linenumber_ptr,
|
|
stash);
|
|
}
|
|
else
|
|
{
|
|
found = comp_unit_find_nearest_line (each, addr,
|
|
filename_ptr,
|
|
functionname_ptr,
|
|
linenumber_ptr,
|
|
stash);
|
|
if (found)
|
|
return TRUE;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return FALSE;
|
|
}
|