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elftoolchain
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libdwarf
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..
📄
Makefile
(10.53 KB)
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Version.map
(5.24 KB)
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_libdwarf.h
(28.02 KB)
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dwarf.3
(22.99 KB)
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dwarf.h
(20.09 KB)
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dwarf_abbrev.c
(3.67 KB)
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dwarf_add_AT_comp_dir.3
(2.93 KB)
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dwarf_add_AT_const_value_string.3
(3.79 KB)
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dwarf_add_AT_dataref.3
(3.53 KB)
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dwarf_add_AT_flag.3
(3.23 KB)
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dwarf_add_AT_location_expr.3
(3.48 KB)
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dwarf_add_AT_name.3
(2.89 KB)
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dwarf_add_AT_producer.3
(2.94 KB)
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dwarf_add_AT_ref_address.3
(3.37 KB)
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dwarf_add_AT_reference.3
(3.44 KB)
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dwarf_add_AT_signed_const.3
(3.78 KB)
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dwarf_add_AT_string.3
(3.23 KB)
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dwarf_add_AT_targ_address.3
(4.03 KB)
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dwarf_add_arange.3
(4.38 KB)
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dwarf_add_die_to_debug.3
(2.78 KB)
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dwarf_add_directory_decl.3
(2.93 KB)
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dwarf_add_expr_addr.3
(3.25 KB)
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dwarf_add_expr_gen.3
(3.4 KB)
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dwarf_add_fde_inst.3
(3.23 KB)
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dwarf_add_file_decl.3
(3.45 KB)
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dwarf_add_frame_cie.3
(3.45 KB)
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dwarf_add_frame_fde.3
(5.54 KB)
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dwarf_add_funcname.3
(2.96 KB)
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dwarf_add_line_entry.3
(4.74 KB)
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dwarf_add_pubname.3
(2.95 KB)
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dwarf_add_typename.3
(2.97 KB)
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dwarf_add_varname.3
(2.96 KB)
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dwarf_add_weakname.3
(2.95 KB)
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dwarf_arange.c
(4.24 KB)
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dwarf_attr.3
(3.29 KB)
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dwarf_attr.c
(7.19 KB)
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dwarf_attrlist.3
(4.28 KB)
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dwarf_attroffset.3
(2.52 KB)
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dwarf_attrval.c
(5.27 KB)
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dwarf_attrval_signed.3
(5.8 KB)
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dwarf_child.3
(7.35 KB)
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dwarf_cu.c
(4.72 KB)
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dwarf_dealloc.3
(5.19 KB)
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dwarf_dealloc.c
(3.68 KB)
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dwarf_def_macro.3
(3.63 KB)
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dwarf_die.c
(9.85 KB)
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dwarf_die_abbrev_code.3
(2.04 KB)
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dwarf_die_link.3
(3.19 KB)
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dwarf_diename.3
(2.68 KB)
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dwarf_dieoffset.3
(5.8 KB)
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dwarf_dump.c
(37.44 KB)
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dwarf_end_macro_file.3
(2.65 KB)
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dwarf_errmsg.3
(2.07 KB)
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dwarf_errmsg.c
(3.91 KB)
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dwarf_errno.3
(1.9 KB)
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dwarf_expand_frame_instructions.3
(5.08 KB)
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dwarf_expr_current_offset.3
(2.64 KB)
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dwarf_expr_into_block.3
(2.88 KB)
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dwarf_fde_cfa_offset.3
(2.89 KB)
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dwarf_find_macro_value_start.3
(2.42 KB)
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dwarf_finish.3
(3.65 KB)
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dwarf_finish.c
(1.81 KB)
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dwarf_form.c
(10.87 KB)
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dwarf_formaddr.3
(2.69 KB)
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dwarf_formblock.3
(3.02 KB)
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dwarf_formexprloc.3
(3.12 KB)
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dwarf_formflag.3
(2.7 KB)
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dwarf_formref.3
(3.56 KB)
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dwarf_formsig8.3
(2.74 KB)
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dwarf_formstring.3
(2.88 KB)
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dwarf_formudata.3
(3.29 KB)
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dwarf_frame.c
(15.45 KB)
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dwarf_funcs.m4
(1.55 KB)
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dwarf_get_AT_name.3
(5.4 KB)
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dwarf_get_abbrev.3
(4.86 KB)
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dwarf_get_abbrev_children_flag.3
(3.07 KB)
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dwarf_get_abbrev_code.3
(2.55 KB)
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dwarf_get_abbrev_entry.3
(4.3 KB)
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dwarf_get_abbrev_tag.3
(2.51 KB)
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dwarf_get_address_size.3
(2.52 KB)
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dwarf_get_arange.3
(3.12 KB)
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dwarf_get_arange_info.3
(3.73 KB)
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dwarf_get_aranges.3
(3.98 KB)
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dwarf_get_cie_index.3
(2.54 KB)
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dwarf_get_cie_info.3
(4.15 KB)
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dwarf_get_cie_of_fde.3
(2.51 KB)
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dwarf_get_cu_die_offset.3
(3.05 KB)
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dwarf_get_die_infotypes_flag.3
(2.35 KB)
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dwarf_get_elf.3
(2.66 KB)
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dwarf_get_fde_at_pc.3
(3.56 KB)
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dwarf_get_fde_info_for_all_regs.3
(4.44 KB)
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dwarf_get_fde_info_for_all_regs3.3
(5.23 KB)
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dwarf_get_fde_info_for_cfa_reg3.3
(4.94 KB)
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dwarf_get_fde_info_for_reg.3
(4.54 KB)
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dwarf_get_fde_info_for_reg3.3
(6.17 KB)
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dwarf_get_fde_instr_bytes.3
(3.32 KB)
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dwarf_get_fde_list.3
(6.03 KB)
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dwarf_get_fde_n.3
(3.16 KB)
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dwarf_get_fde_range.3
(4.19 KB)
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dwarf_get_form_class.3
(2.74 KB)
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dwarf_get_funcs.3
(5.86 KB)
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dwarf_get_globals.3
(5.87 KB)
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dwarf_get_loclist_entry.3
(4.2 KB)
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dwarf_get_macro_details.3
(5.41 KB)
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dwarf_get_pubtypes.3
(6.61 KB)
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dwarf_get_ranges.3
(6.71 KB)
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dwarf_get_relocation_info.3
(6.73 KB)
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dwarf_get_relocation_info_count.3
(3.38 KB)
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dwarf_get_section_bytes.3
(4.63 KB)
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dwarf_get_section_max_offsets.3
(3.75 KB)
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dwarf_get_str.3
(3.73 KB)
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dwarf_get_types.3
(6.29 KB)
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dwarf_get_vars.3
(5.77 KB)
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dwarf_get_weaks.3
(5.84 KB)
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dwarf_hasattr.3
(2.71 KB)
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dwarf_hasform.3
(3.48 KB)
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dwarf_highpc.3
(4.78 KB)
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dwarf_init.3
(4.49 KB)
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dwarf_init.c
(4.09 KB)
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dwarf_lineno.3
(5.39 KB)
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dwarf_lineno.c
(6.75 KB)
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dwarf_lne_end_sequence.3
(2.95 KB)
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dwarf_lne_set_address.3
(3 KB)
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dwarf_loclist.3
(6.09 KB)
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dwarf_loclist.c
(8.32 KB)
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dwarf_loclist_from_expr.3
(5.38 KB)
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dwarf_macinfo.c
(2.62 KB)
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dwarf_nametbl.m4
(3.89 KB)
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dwarf_new_die.3
(4.33 KB)
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dwarf_new_expr.3
(3.91 KB)
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dwarf_new_fde.3
(2.58 KB)
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dwarf_next_cu_header.3
(8.19 KB)
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dwarf_next_types_section.3
(3.83 KB)
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dwarf_object_init.3
(6.4 KB)
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dwarf_pro_arange.c
(2.51 KB)
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dwarf_pro_attr.c
(9.29 KB)
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dwarf_pro_die.c
(3.09 KB)
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dwarf_pro_expr.c
(5.69 KB)
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dwarf_pro_finish.c
(1.67 KB)
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dwarf_pro_frame.c
(5.37 KB)
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dwarf_pro_funcs.m4
(1.54 KB)
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dwarf_pro_init.c
(3.28 KB)
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dwarf_pro_lineno.c
(5.06 KB)
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dwarf_pro_macinfo.c
(3.96 KB)
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dwarf_pro_nametbl.m4
(2.28 KB)
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dwarf_pro_pubnames.m4
(1.54 KB)
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dwarf_pro_reloc.c
(3.75 KB)
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dwarf_pro_sections.c
(2.54 KB)
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dwarf_pro_types.m4
(1.54 KB)
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dwarf_pro_vars.m4
(1.54 KB)
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dwarf_pro_weaks.m4
(1.54 KB)
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dwarf_producer_init.3
(7.59 KB)
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dwarf_producer_set_isa.3
(2.88 KB)
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dwarf_pubnames.m4
(1.56 KB)
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dwarf_pubtypes.m4
(1.56 KB)
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dwarf_ranges.c
(2.91 KB)
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dwarf_reloc.c
(1.56 KB)
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dwarf_reset_section_bytes.3
(2.44 KB)
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dwarf_sections.c
(3.79 KB)
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dwarf_set_frame_cfa_value.3
(4.11 KB)
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dwarf_set_reloc_application.3
(2.71 KB)
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dwarf_seterrarg.3
(3.18 KB)
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dwarf_seterror.c
(1.97 KB)
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dwarf_srcfiles.3
(3.23 KB)
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dwarf_srclines.3
(4.66 KB)
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dwarf_start_macro_file.3
(3.09 KB)
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dwarf_str.c
(2.13 KB)
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dwarf_tag.3
(2.38 KB)
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dwarf_transform_to_disk_form.3
(3.22 KB)
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dwarf_types.m4
(1.55 KB)
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dwarf_undef_macro.3
(3.38 KB)
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dwarf_vars.m4
(1.55 KB)
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dwarf_vendor_ext.3
(3.1 KB)
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dwarf_weaks.m4
(1.55 KB)
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dwarf_whatattr.3
(2.39 KB)
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libdwarf.c
(1.5 KB)
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libdwarf.h
(32.98 KB)
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libdwarf_abbrev.c
(6.74 KB)
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libdwarf_arange.c
(7.22 KB)
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libdwarf_attr.c
(12.08 KB)
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libdwarf_die.c
(10.49 KB)
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libdwarf_elf_access.c
(3.52 KB)
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libdwarf_elf_init.c
(9.21 KB)
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libdwarf_error.c
(2.19 KB)
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libdwarf_frame.c
(39.32 KB)
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libdwarf_info.c
(9.22 KB)
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libdwarf_init.c
(8.14 KB)
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libdwarf_lineno.c
(18.27 KB)
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libdwarf_loc.c
(14.79 KB)
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libdwarf_loclist.c
(4.47 KB)
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libdwarf_macinfo.c
(5.96 KB)
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libdwarf_nametbl.c
(6.64 KB)
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libdwarf_ranges.c
(3.88 KB)
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libdwarf_reloc.c
(12.86 KB)
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libdwarf_rw.c
(10.93 KB)
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libdwarf_sections.c
(7.01 KB)
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libdwarf_str.c
(4.29 KB)
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os.NetBSD.mk
(74 B)
Editing: libdwarf_elf_init.c
/*- * Copyright (c) 2009 Kai Wang * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "_libdwarf.h" ELFTC_VCSID("$Id: libdwarf_elf_init.c 3475 2016-05-18 18:11:26Z emaste $"); static const char *debug_name[] = { ".debug_abbrev", ".debug_aranges", ".debug_frame", ".debug_info", ".debug_types", ".debug_line", ".debug_pubnames", ".eh_frame", ".debug_macinfo", ".debug_str", ".debug_loc", ".debug_pubtypes", ".debug_ranges", ".debug_static_func", ".debug_static_vars", ".debug_typenames", ".debug_weaknames", NULL }; static void _dwarf_elf_apply_rel_reloc(Dwarf_Debug dbg, void *buf, uint64_t bufsize, Elf_Data *rel_data, Elf_Data *symtab_data, int endian) { Dwarf_Unsigned type; GElf_Rel rel; GElf_Sym sym; size_t symndx; uint64_t offset; uint64_t addend; int size, j; j = 0; while (gelf_getrel(rel_data, j++, &rel) != NULL) { symndx = GELF_R_SYM(rel.r_info); type = GELF_R_TYPE(rel.r_info); if (gelf_getsym(symtab_data, symndx, &sym) == NULL) continue; size = _dwarf_get_reloc_size(dbg, type); if (size == 0) continue; /* Unknown or non-absolute relocation. */ offset = rel.r_offset; if (offset + size >= bufsize) continue; if (endian == ELFDATA2MSB) addend = _dwarf_read_msb(buf, &offset, size); else addend = _dwarf_read_lsb(buf, &offset, size); offset = rel.r_offset; if (endian == ELFDATA2MSB) _dwarf_write_msb(buf, &offset, sym.st_value + addend, size); else _dwarf_write_lsb(buf, &offset, sym.st_value + addend, size); } } static void _dwarf_elf_apply_rela_reloc(Dwarf_Debug dbg, void *buf, uint64_t bufsize, Elf_Data *rel_data, Elf_Data *symtab_data, int endian) { Dwarf_Unsigned type; GElf_Rela rela; GElf_Sym sym; size_t symndx; uint64_t offset; int size, j; j = 0; while (gelf_getrela(rel_data, j++, &rela) != NULL) { symndx = GELF_R_SYM(rela.r_info); type = GELF_R_TYPE(rela.r_info); if (gelf_getsym(symtab_data, symndx, &sym) == NULL) continue; offset = rela.r_offset; size = _dwarf_get_reloc_size(dbg, type); if (size == 0) continue; /* Unknown or non-absolute relocation. */ if (offset + size >= bufsize) continue; if (endian == ELFDATA2MSB) _dwarf_write_msb(buf, &offset, sym.st_value + rela.r_addend, size); else _dwarf_write_lsb(buf, &offset, sym.st_value + rela.r_addend, size); } } static int _dwarf_elf_relocate(Dwarf_Debug dbg, Elf *elf, Dwarf_Elf_Data *ed, size_t shndx, size_t symtab, Elf_Data *symtab_data, Dwarf_Error *error) { GElf_Ehdr eh; GElf_Shdr sh; Elf_Scn *scn; Elf_Data *rel; int elferr; if (symtab == 0 || symtab_data == NULL) return (DW_DLE_NONE); if (gelf_getehdr(elf, &eh) == NULL) { DWARF_SET_ELF_ERROR(dbg, error); return (DW_DLE_ELF); } scn = NULL; (void) elf_errno(); while ((scn = elf_nextscn(elf, scn)) != NULL) { if (gelf_getshdr(scn, &sh) == NULL) { DWARF_SET_ELF_ERROR(dbg, error); return (DW_DLE_ELF); } if ((sh.sh_type != SHT_REL && sh.sh_type != SHT_RELA) || sh.sh_size == 0) continue; if (sh.sh_info == shndx && sh.sh_link == symtab) { if ((rel = elf_getdata(scn, NULL)) == NULL) { elferr = elf_errno(); if (elferr != 0) { _DWARF_SET_ERROR(NULL, error, DW_DLE_ELF, elferr); return (DW_DLE_ELF); } else return (DW_DLE_NONE); } ed->ed_alloc = malloc(ed->ed_data->d_size); if (ed->ed_alloc == NULL) { DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); return (DW_DLE_MEMORY); } memcpy(ed->ed_alloc, ed->ed_data->d_buf, ed->ed_data->d_size); if (sh.sh_type == SHT_REL) _dwarf_elf_apply_rel_reloc(dbg, ed->ed_alloc, ed->ed_data->d_size, rel, symtab_data, eh.e_ident[EI_DATA]); else _dwarf_elf_apply_rela_reloc(dbg, ed->ed_alloc, ed->ed_data->d_size, rel, symtab_data, eh.e_ident[EI_DATA]); return (DW_DLE_NONE); } } elferr = elf_errno(); if (elferr != 0) { DWARF_SET_ELF_ERROR(dbg, error); return (DW_DLE_ELF); } return (DW_DLE_NONE); } int _dwarf_elf_init(Dwarf_Debug dbg, Elf *elf, Dwarf_Error *error) { Dwarf_Obj_Access_Interface *iface; Dwarf_Elf_Object *e; const char *name; GElf_Shdr sh; Elf_Scn *scn; Elf_Data *symtab_data; size_t symtab_ndx; int elferr, i, j, n, ret; ret = DW_DLE_NONE; if ((iface = calloc(1, sizeof(*iface))) == NULL) { DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); return (DW_DLE_MEMORY); } if ((e = calloc(1, sizeof(*e))) == NULL) { free(iface); DWARF_SET_ERROR(dbg, error, DW_DLE_MEMORY); return (DW_DLE_MEMORY); } e->eo_elf = elf; e->eo_methods.get_section_info = _dwarf_elf_get_section_info; e->eo_methods.get_byte_order = _dwarf_elf_get_byte_order; e->eo_methods.get_length_size = _dwarf_elf_get_length_size; e->eo_methods.get_pointer_size = _dwarf_elf_get_pointer_size; e->eo_methods.get_section_count = _dwarf_elf_get_section_count; e->eo_methods.load_section = _dwarf_elf_load_section; iface->object = e; iface->methods = &e->eo_methods; dbg->dbg_iface = iface; if (gelf_getehdr(elf, &e->eo_ehdr) == NULL) { DWARF_SET_ELF_ERROR(dbg, error); ret = DW_DLE_ELF; goto fail_cleanup; } dbg->dbg_machine = e->eo_ehdr.e_machine; if (!elf_getshstrndx(elf, &e->eo_strndx)) { DWARF_SET_ELF_ERROR(dbg, error); ret = DW_DLE_ELF; goto fail_cleanup; } n = 0; symtab_ndx = 0; symtab_data = NULL; scn = NULL; (void) elf_errno(); while ((scn = elf_nextscn(elf, scn)) != NULL) { if (gelf_getshdr(scn, &sh) == NULL) { DWARF_SET_ELF_ERROR(dbg, error); ret = DW_DLE_ELF; goto fail_cleanup; } if (sh.sh_type == SHT_NOBITS) continue; if ((name = elf_strptr(elf, e->eo_strndx, sh.sh_name)) == NULL) { DWARF_SET_ELF_ERROR(dbg, error); ret = DW_DLE_ELF; goto fail_cleanup; } if (!strcmp(name, ".symtab")) { symtab_ndx = elf_ndxscn(scn); if ((symtab_data = elf_getdata(scn, NULL)) == NULL) { elferr = elf_errno(); if (elferr != 0) { _DWARF_SET_ERROR(NULL, error, DW_DLE_ELF, elferr); ret = DW_DLE_ELF; goto fail_cleanup; } } continue; } for (i = 0; debug_name[i] != NULL; i++) { if (!strcmp(name, debug_name[i])) n++; } } elferr = elf_errno(); if (elferr != 0) { DWARF_SET_ELF_ERROR(dbg, error); return (DW_DLE_ELF); } e->eo_seccnt = n; if (n == 0) return (DW_DLE_NONE); if ((e->eo_data = calloc(n, sizeof(Dwarf_Elf_Data))) == NULL || (e->eo_shdr = calloc(n, sizeof(GElf_Shdr))) == NULL) { DWARF_SET_ERROR(NULL, error, DW_DLE_MEMORY); ret = DW_DLE_MEMORY; goto fail_cleanup; } scn = NULL; j = 0; while ((scn = elf_nextscn(elf, scn)) != NULL && j < n) { if (gelf_getshdr(scn, &sh) == NULL) { DWARF_SET_ELF_ERROR(dbg, error); ret = DW_DLE_ELF; goto fail_cleanup; } if (sh.sh_type == SHT_NOBITS) continue; memcpy(&e->eo_shdr[j], &sh, sizeof(sh)); if ((name = elf_strptr(elf, e->eo_strndx, sh.sh_name)) == NULL) { DWARF_SET_ELF_ERROR(dbg, error); ret = DW_DLE_ELF; goto fail_cleanup; } for (i = 0; debug_name[i] != NULL; i++) { if (strcmp(name, debug_name[i])) continue; (void) elf_errno(); if ((e->eo_data[j].ed_data = elf_getdata(scn, NULL)) == NULL) { elferr = elf_errno(); if (elferr != 0) { _DWARF_SET_ERROR(dbg, error, DW_DLE_ELF, elferr); ret = DW_DLE_ELF; goto fail_cleanup; } } if (_libdwarf.applyreloc) { if (_dwarf_elf_relocate(dbg, elf, &e->eo_data[j], elf_ndxscn(scn), symtab_ndx, symtab_data, error) != DW_DLE_NONE) goto fail_cleanup; } j++; } } assert(j == n); return (DW_DLE_NONE); fail_cleanup: _dwarf_elf_deinit(dbg); return (ret); } void _dwarf_elf_deinit(Dwarf_Debug dbg) { Dwarf_Obj_Access_Interface *iface; Dwarf_Elf_Object *e; int i; iface = dbg->dbg_iface; assert(iface != NULL); e = iface->object; assert(e != NULL); if (e->eo_data) { for (i = 0; (Dwarf_Unsigned) i < e->eo_seccnt; i++) { if (e->eo_data[i].ed_alloc) free(e->eo_data[i].ed_alloc); } free(e->eo_data); } if (e->eo_shdr) free(e->eo_shdr); free(e); free(iface); dbg->dbg_iface = NULL; }
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