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DWARF-5 basic functionality
this is a kitchen-sink patch for everything that did not fit into its own patch. DWO is not yet implemented. gdb/ChangeLog 2017-02-20 Jan Kratochvil <jan.kratochvil@redhat.com> * defs.h (read_unsigned_leb128): New declaration. * dwarf2loc.c (decode_debug_loclists_addresses): New function. (decode_debug_loc_dwo_addresses): Update DEBUG_LOC_* to DW_LLE_*. (dwarf2_find_location_expression): Call also decode_debug_loclists_addresses. Handle DWARF-5 ULEB128 length. * dwarf2loc.h (dwarf2_version): New declaration. * dwarf2read.c (struct dwarf2_per_objfile): Add loclists, line_str, rnglists. (dwarf2_elf_names): Add .debug_loclists, .debug_line_str, .debug_rnglists. (struct dwop_section_names): Add loclists_dwo. (dwop_section_names): Add .debug_loclists.dwo. (struct comp_unit_head): Add unit_type, signature, type_offset_in_tu. (struct dwarf2_per_cu_data): Add dwarf_version. (struct dwo_sections): Add loclists. (struct attr_abbrev): Add implicit_const. (read_indirect_line_string): New declaration. (read_unsigned_leb128): Delete declaration. (rcuh_kind): New definition. (read_and_check_comp_unit_head): Change parameter is_debug_types_section to section_kind. (dwarf2_locate_sections): Handle loclists, line_str and rnglists. (read_comp_unit_head): Change parameter abfd to section, add parameter section_kind. Handle DWARF-5. (error_check_comp_unit_head): Accept also DWARF version 5. (read_and_check_comp_unit_head): Change parameter is_debug_types_section to section_kind. (read_and_check_type_unit_head): Delete function. (read_abbrev_offset): Handle DWARF-5. (create_debug_type_hash_table): Add parameter section_kind. Process only DW_UT_type. Use signature and type_offset_in_tu from struct comp_unit_head. (create_debug_types_hash_table): Update create_debug_type_hash_table caller. (create_all_type_units): Call create_debug_type_hash_table. (read_cutu_die_from_dwo, init_cutu_and_read_dies): Change read_and_check_type_unit_head caller to read_and_check_comp_unit_head caller. (skip_one_die): Handle DW_FORM_implicit_const. (dwarf2_rnglists_process): New function. (dwarf2_ranges_process): Call dwarf2_rnglists_process for DWARF-5. (abbrev_table_read_table): Handle DW_FORM_implicit_const. (read_attribute_value): Handle DW_FORM_implicit_const, DW_FORM_line_strp. (read_attribute): Handle DW_FORM_implicit_const. (read_indirect_string_at_offset_from): New function from read_indirect_string_at_offset. (read_indirect_string_at_offset): Call read_indirect_string_at_offset_from. (read_indirect_line_string_at_offset): New function. (read_indirect_string): New function comment. (read_indirect_line_string): New function. (read_unsigned_leb128): Make it global. (dwarf2_string_attr): Handle DWARF-5. (add_include_dir_stub, read_formatted_entries): New functions. (dwarf_decode_line_header, dump_die_shallow, cu_debug_loc_section): Handle DWARF-5. (per_cu_header_read_in): Update read_comp_unit_head caller. (dwarf2_version): New function. * symfile.h (struct dwarf2_debug_sections): Add loclists, line_str and rnglists. * xcoffread.c (dwarf2_xcoff_names): Update struct dwarf2_debug_sections fields. gdb/testsuite/ChangeLog 2017-02-20 Jan Kratochvil <jan.kratochvil@redhat.com> * gdb.dwarf2/dw2-error.exp (file $testfile): Update expected string.
This commit is contained in:
Jan Kratochvil
parent
22d2f3ab92
commit
43988095a5
@ -1,3 +1,69 @@
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2017-02-20 Jan Kratochvil <jan.kratochvil@redhat.com>
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* defs.h (read_unsigned_leb128): New declaration.
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* dwarf2loc.c (decode_debug_loclists_addresses): New function.
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(decode_debug_loc_dwo_addresses): Update DEBUG_LOC_* to DW_LLE_*.
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(dwarf2_find_location_expression): Call also
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decode_debug_loclists_addresses. Handle DWARF-5 ULEB128 length.
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* dwarf2loc.h (dwarf2_version): New declaration.
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* dwarf2read.c (struct dwarf2_per_objfile): Add loclists, line_str,
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rnglists.
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(dwarf2_elf_names): Add .debug_loclists, .debug_line_str,
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.debug_rnglists.
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(struct dwop_section_names): Add loclists_dwo.
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(dwop_section_names): Add .debug_loclists.dwo.
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(struct comp_unit_head): Add unit_type, signature, type_offset_in_tu.
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(struct dwarf2_per_cu_data): Add dwarf_version.
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(struct dwo_sections): Add loclists.
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(struct attr_abbrev): Add implicit_const.
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(read_indirect_line_string): New declaration.
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(read_unsigned_leb128): Delete declaration.
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(rcuh_kind): New definition.
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(read_and_check_comp_unit_head): Change parameter
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is_debug_types_section to section_kind.
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(dwarf2_locate_sections): Handle loclists, line_str and rnglists.
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(read_comp_unit_head): Change parameter abfd to section, add parameter
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section_kind. Handle DWARF-5.
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(error_check_comp_unit_head): Accept also DWARF version 5.
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(read_and_check_comp_unit_head): Change parameter
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is_debug_types_section to section_kind.
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(read_and_check_type_unit_head): Delete function.
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(read_abbrev_offset): Handle DWARF-5.
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(create_debug_type_hash_table): Add parameter section_kind. Process
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only DW_UT_type. Use signature and type_offset_in_tu from struct
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comp_unit_head.
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(create_debug_types_hash_table): Update create_debug_type_hash_table
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caller.
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(create_all_type_units): Call create_debug_type_hash_table.
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(read_cutu_die_from_dwo, init_cutu_and_read_dies): Change
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read_and_check_type_unit_head caller to read_and_check_comp_unit_head
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caller.
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(skip_one_die): Handle DW_FORM_implicit_const.
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(dwarf2_rnglists_process): New function.
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(dwarf2_ranges_process): Call dwarf2_rnglists_process for DWARF-5.
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(abbrev_table_read_table): Handle DW_FORM_implicit_const.
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(read_attribute_value): Handle DW_FORM_implicit_const,
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DW_FORM_line_strp.
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(read_attribute): Handle DW_FORM_implicit_const.
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(read_indirect_string_at_offset_from): New function from
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read_indirect_string_at_offset.
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(read_indirect_string_at_offset): Call
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read_indirect_string_at_offset_from.
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(read_indirect_line_string_at_offset): New function.
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(read_indirect_string): New function comment.
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(read_indirect_line_string): New function.
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(read_unsigned_leb128): Make it global.
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(dwarf2_string_attr): Handle DWARF-5.
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(add_include_dir_stub, read_formatted_entries): New functions.
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(dwarf_decode_line_header, dump_die_shallow, cu_debug_loc_section):
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Handle DWARF-5.
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(per_cu_header_read_in): Update read_comp_unit_head caller.
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(dwarf2_version): New function.
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* symfile.h (struct dwarf2_debug_sections): Add loclists, line_str and
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rnglists.
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* xcoffread.c (dwarf2_xcoff_names): Update struct dwarf2_debug_sections
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fields.
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2017-02-20 Jan Kratochvil <jan.kratochvil@redhat.com>
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* dwarf2read.c (abbrev_table_read_table): Read the data only once.
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@ -648,6 +648,10 @@ extern void store_typed_address (gdb_byte *buf, struct type *type,
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extern int watchdog;
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/* From dwarf2read.c */
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ULONGEST read_unsigned_leb128 (bfd *, const gdb_byte *, unsigned int *);
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/* Hooks for alternate command interfaces. */
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/* * The name of the interpreter if specified on the command line. */
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@ -143,6 +143,57 @@ decode_debug_loc_addresses (const gdb_byte *loc_ptr, const gdb_byte *buf_end,
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return DEBUG_LOC_START_END;
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}
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/* Decode the addresses in .debug_loclists entry.
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A pointer to the next byte to examine is returned in *NEW_PTR.
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The encoded low,high addresses are return in *LOW,*HIGH.
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The result indicates the kind of entry found. */
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static enum debug_loc_kind
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decode_debug_loclists_addresses (struct dwarf2_per_cu_data *per_cu,
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const gdb_byte *loc_ptr,
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const gdb_byte *buf_end,
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const gdb_byte **new_ptr,
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CORE_ADDR *low, CORE_ADDR *high,
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enum bfd_endian byte_order,
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unsigned int addr_size,
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int signed_addr_p)
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{
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uint64_t u64;
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if (loc_ptr == buf_end)
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return DEBUG_LOC_BUFFER_OVERFLOW;
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switch (*loc_ptr++)
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{
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case DW_LLE_end_of_list:
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*new_ptr = loc_ptr;
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return DEBUG_LOC_END_OF_LIST;
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case DW_LLE_base_address:
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if (loc_ptr + addr_size > buf_end)
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return DEBUG_LOC_BUFFER_OVERFLOW;
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if (signed_addr_p)
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*high = extract_signed_integer (loc_ptr, addr_size, byte_order);
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else
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*high = extract_unsigned_integer (loc_ptr, addr_size, byte_order);
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loc_ptr += addr_size;
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*new_ptr = loc_ptr;
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return DEBUG_LOC_BASE_ADDRESS;
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case DW_LLE_offset_pair:
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loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &u64);
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if (loc_ptr == NULL)
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return DEBUG_LOC_BUFFER_OVERFLOW;
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*low = u64;
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loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &u64);
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if (loc_ptr == NULL)
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return DEBUG_LOC_BUFFER_OVERFLOW;
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*high = u64;
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*new_ptr = loc_ptr;
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return DEBUG_LOC_START_END;
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default:
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return DEBUG_LOC_INVALID_ENTRY;
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}
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}
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/* Decode the addresses in .debug_loc.dwo entry.
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A pointer to the next byte to examine is returned in *NEW_PTR.
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The encoded low,high addresses are return in *LOW,*HIGH.
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@ -163,10 +214,10 @@ decode_debug_loc_dwo_addresses (struct dwarf2_per_cu_data *per_cu,
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switch (*loc_ptr++)
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{
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case DEBUG_LOC_END_OF_LIST:
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case DW_LLE_GNU_end_of_list_entry:
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*new_ptr = loc_ptr;
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return DEBUG_LOC_END_OF_LIST;
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case DEBUG_LOC_BASE_ADDRESS:
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case DW_LLE_GNU_base_address_selection_entry:
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*low = 0;
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loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &high_index);
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if (loc_ptr == NULL)
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@ -174,7 +225,7 @@ decode_debug_loc_dwo_addresses (struct dwarf2_per_cu_data *per_cu,
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*high = dwarf2_read_addr_index (per_cu, high_index);
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*new_ptr = loc_ptr;
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return DEBUG_LOC_BASE_ADDRESS;
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case DEBUG_LOC_START_END:
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case DW_LLE_GNU_start_end_entry:
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loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &low_index);
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if (loc_ptr == NULL)
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return DEBUG_LOC_BUFFER_OVERFLOW;
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@ -185,7 +236,7 @@ decode_debug_loc_dwo_addresses (struct dwarf2_per_cu_data *per_cu,
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*high = dwarf2_read_addr_index (per_cu, high_index);
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*new_ptr = loc_ptr;
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return DEBUG_LOC_START_END;
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case DEBUG_LOC_START_LENGTH:
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case DW_LLE_GNU_start_length_entry:
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loc_ptr = gdb_read_uleb128 (loc_ptr, buf_end, &low_index);
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if (loc_ptr == NULL)
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return DEBUG_LOC_BUFFER_OVERFLOW;
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@ -237,11 +288,17 @@ dwarf2_find_location_expression (struct dwarf2_loclist_baton *baton,
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kind = decode_debug_loc_dwo_addresses (baton->per_cu,
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loc_ptr, buf_end, &new_ptr,
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&low, &high, byte_order);
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else
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else if (dwarf2_version (baton->per_cu) < 5)
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kind = decode_debug_loc_addresses (loc_ptr, buf_end, &new_ptr,
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&low, &high,
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byte_order, addr_size,
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signed_addr_p);
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else
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kind = decode_debug_loclists_addresses (baton->per_cu,
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loc_ptr, buf_end, &new_ptr,
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&low, &high, byte_order,
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addr_size, signed_addr_p);
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loc_ptr = new_ptr;
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switch (kind)
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{
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@ -277,8 +334,18 @@ dwarf2_find_location_expression (struct dwarf2_loclist_baton *baton,
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high += base_address;
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}
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length = extract_unsigned_integer (loc_ptr, 2, byte_order);
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loc_ptr += 2;
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if (dwarf2_version (baton->per_cu) < 5)
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{
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length = extract_unsigned_integer (loc_ptr, 2, byte_order);
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loc_ptr += 2;
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}
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else
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{
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unsigned int bytes_read;
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length = read_unsigned_leb128 (NULL, loc_ptr, &bytes_read);
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loc_ptr += bytes_read;
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}
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if (low == high && pc == low)
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{
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@ -56,6 +56,8 @@ int dwarf2_per_cu_offset_size (struct dwarf2_per_cu_data *cu);
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offset in the parent objfile. */
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CORE_ADDR dwarf2_per_cu_text_offset (struct dwarf2_per_cu_data *cu);
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short dwarf2_version (struct dwarf2_per_cu_data *per_cu);
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/* Find a particular location expression from a location list. */
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const gdb_byte *dwarf2_find_location_expression
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(struct dwarf2_loclist_baton *baton,
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780
gdb/dwarf2read.c
780
gdb/dwarf2read.c
File diff suppressed because it is too large
Load Diff
@ -600,10 +600,13 @@ struct dwarf2_debug_sections {
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struct dwarf2_section_names abbrev;
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struct dwarf2_section_names line;
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struct dwarf2_section_names loc;
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struct dwarf2_section_names loclists;
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struct dwarf2_section_names macinfo;
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struct dwarf2_section_names macro;
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struct dwarf2_section_names str;
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struct dwarf2_section_names line_str;
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struct dwarf2_section_names ranges;
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struct dwarf2_section_names rnglists;
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struct dwarf2_section_names types;
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struct dwarf2_section_names addr;
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struct dwarf2_section_names frame;
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@ -1,3 +1,7 @@
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2017-02-20 Jan Kratochvil <jan.kratochvil@redhat.com>
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* gdb.dwarf2/dw2-error.exp (file $testfile): Update expected string.
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2017-02-15 Sergio Durigan Junior <sergiodj@redhat.com>
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PR gdb/21164
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@ -41,7 +41,7 @@ gdb_test_no_output "set breakpoint pending off"
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# First test that reading symbols fails.
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gdb_test "file $binfile" \
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"Reading symbols.*Dwarf Error: wrong version in compilation unit header .is 153, should be 2, 3, or 4.*" \
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{Reading symbols.*Dwarf Error: wrong unit_type in compilation unit header \(is 0, should be 1 or 2\).*} \
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"file $testfile"
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# Now check that we can still break given the minimal symbol.
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@ -159,13 +159,16 @@ static const struct dwarf2_debug_sections dwarf2_xcoff_names = {
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{ ".dwabrev", NULL },
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{ ".dwline", NULL },
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{ ".dwloc", NULL },
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{ NULL, NULL }, /* debug_loclists */
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/* AIX XCOFF defines one, named DWARF section for macro debug information.
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XLC does not generate debug_macinfo for DWARF4 and below.
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The section is assigned to debug_macro for DWARF5 and above. */
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{ NULL, NULL },
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{ ".dwmac", NULL },
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{ ".dwstr", NULL },
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{ NULL, NULL }, /* debug_line_str */
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{ ".dwrnges", NULL },
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{ NULL, NULL }, /* debug_rnglists */
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{ ".dwpbtyp", NULL },
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{ NULL, NULL }, /* debug_addr */
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{ ".dwframe", NULL },
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