2012-04-28 Doug Evans <dje@google.com>
+ Initial support for Fission. http://gcc.gnu.org/wiki/DebugFission
+ * symfile.c (default_symfile_relocate): Use sectp->owner instead of
+ objfile->obfd.
+ * symfile.h (dwarf2_debug_sections): New member addr.
+ * dwarf2expr.c (execute_stack_op): New case DW_OP_GNU_addr_index.
+ (ctx_no_get_addr_index): New function.
+ * dwarf2expr.h (dwarf_expr_context_funcs): New member get_addr_index.
+ (ctx_no_get_addr_index): Declare.
+ * dwarf2-frame.c (dwarf2_frame_ctx_funcs): Update.
+ * dwarf2loc.c (dwarf_expr_get_addr_index): New function.
+ (dwarf_expr_ctx_funcs): Update.
+ (needs_get_addr_index): New function.
+ (needs_frame_ctx_funcs): Update.
+ * dwarf2loc.h (dwarf2_read_addr_index): Declare.
+ * dwarf2read.c: #include "gdbcore.h".
+ (dwarf2_per_objfile): New members addr, dwo_files.
+ (dwarf2_elf_names): Add entry for addr.
+ (struct dwo_section_names): New type.
+ (dwo_section_names): New static global.
+ (dwarf2_cu): New members dwo_unit, addr_base, have_addr_base.
+ (dwarf2_per_cu_data): New member is_debug_types, all boolean uses of
+ old debug_types_section member updated to use this.
+ Rename member debug_types_section to info_or_types_section,
+ all uses updated.
+ (signatured_type): Rename member type_offset to type_offset_in_tu,
+ all uses updated. New member type_offset_in_section.
+ (struct dwo_sections): New type.
+ (struct dwo_unit): New type.
+ (struct dwo_file): New type.
+ (die_reader_specs): New member dwo_file.
+ (dwarf2_locate_sections): Watch for .debug_addr.
+ (zlib_decompress_section): Use sectp->owner instead of objfile->obfd.
+ (dwarf2_read_section): Get bfd of section from bfd's asection,
+ instead of objfile.
+ (create_cus_from_index): Initialize the_cu->info_or_types_section.
+ (create_signatured_type_table_from_index): Initialize
+ sig_type->info_or_types_section.
+ (dw2_get_file_names): Statement lists for type units with DWO files
+ live in the DWO file.
+ (create_debug_types_hash_table): New function.
+ (create_all_type_units): Rewrite.
+ (init_cu_die_reader): New arg dwo_file, all callers updated.
+ (init_and_read_dies_worker): Get section from
+ this_cu->info_or_types_section. Set sig_type->type_offset_in_section.
+ Watch for DW_AT_GNU_dwo_name and if present lookup the file and
+ continue reading the CU/TU from there.
+ (init_cutu_and_read_dies_no_follow): New arg dwo_file, all callers
+ updated. Get section from this_cu->info_or_types_section.
+ (create_all_comp_units): Initialize this_cu->info_or_types_section.
+ (skip_one_die): New cases DW_FORM_GNU_addr_index,
+ DW_FORM_GNU_str_index.
+ (hash_dwo_file, eq_dwo_file): New functions.
+ (allocate_dwo_file_hash_table): New function.
+ (hash_dwo_unit, eq_dwo_unit): New functions.
+ (allocate_dwo_unit_table): New function.
+ (dwarf2_locate_dwo_sections): New function.
+ (struct create_dwo_info_table_data): New type.
+ (create_debug_info_hash_table_reader): New function.
+ (create_debug_info_hash_table): New function.
+ (try_open_dwo_file, open_dwo_file, init_dwo_file): New function.
+ (lookup_dwo_file): New function.
+ (lookup_dwo_comp_unit, lookup_dwo_type_unit): New functions.
+ (free_dwo_file, free_dwo_file_cleanup): New functions.
+ (free_dwo_file_from_slot, free_dwo_files): New functions.
+ (dwarf2_get_pc_bounds): Handle DW_FORM_GNU_addr_index.
+ (dwarf2_record_block_ranges): Ditto.
+ (read_partial_die): Ditto.
+ (process_enumeration_scope): Update to use type_offset_in_section.
+ (read_full_die_1): New function.
+ (read_full_die): Rewrite.
+ (read_attribute_value): New cases DW_FORM_GNU_addr_index,
+ DW_FORM_GNU_str_index.
+ (read_addr_index_1, read_addr_index): New functions.
+ (read_addr_index_from_leb128): New function.
+ (struct dwarf2_read_addr_index_data): New type.
+ (dwarf2_read_addr_index_reader): New function.
+ (dwarf2_read_addr_index): New function.
+ (read_str_index): New function.
+ (leb128_size): New function.
+ (dwarf_decode_line_header): Delete arg abfd, all callers updated.
+ If processing a type unit from a DWO file, get the line section
+ from the DWO file.
+ (var_decode_location): Watch for DW_OP_GNU_addr_index.
+ (dwarf2_const_value_attr): New cases DW_FORM_GNU_addr_index,
+ DW_FORM_GNU_str_index.
+ (lookup_die_type): Check whether section offset of type's die is
+ known before looking it up. Remove assert. Condition can
+ legimately happen for inter-cu type references.
+ (dwarf_attr_name): Handle Fission attributes.
+ (dwarf_form_name): Handle Fission forms.
+ (dump_die_shallow): New cases DW_FORM_GNU_addr_index,
+ DW_FORM_GNU_str_index.
+ (follow_die_sig): Update to use type_offset_in_section.
+ (decode_locdesc): New case DW_OP_GNU_addr_index.
+ (skip_form_bytes): New cases DW_FORM_GNU_addr_index,
+ DW_FORM_GNU_str_index.
+ (cu_debug_loc_section): New function.
+ (fill_in_loclist_baton, dwarf2_symbol_mark_computed): Call it.
+ (dwarf2_per_objfile_free): Unmap .debug_addr section.
+ Free DWO files if present.
+ * xcoffread.c (dwarf2_xcoff_names): Add .debug_addr.
+
Refactor DIE reading.
* dwarf2read.c (dwarf2_per_objfile): Replace members
debug_info_type_hash and debug_types_type_hash with die_type_hash.
projects / deliverable / binutils-gdb.git / blobdiff