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* dwarf2read.c (struct dwo_file): Replace member "cus" with "cu".
(struct create_dwo_cu_data): Renamed from create_dwo_info_table_data. (create_dwo_cu_reader): Renamed from create_dwo_debug_info_hash_table_reader. (create_dwo_cu): Renamed from create_dwo_debug_info_hash_table. Remove support for multiple CUs in a DWO file. (open_and_init_dwo_file, lookup_dwo_cutu): Update.
This commit is contained in:
Doug Evans
parent
4031ecc58a
commit
19c3d4c935
@ -1,5 +1,13 @@
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2013-04-15 Doug Evans <dje@google.com>
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* dwarf2read.c (struct dwo_file): Replace member "cus" with "cu".
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(struct create_dwo_cu_data): Renamed from create_dwo_info_table_data.
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(create_dwo_cu_reader): Renamed from
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create_dwo_debug_info_hash_table_reader.
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(create_dwo_cu): Renamed from create_dwo_debug_info_hash_table.
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Remove support for multiple CUs in a DWO file.
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(open_and_init_dwo_file, lookup_dwo_cutu): Update.
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* dwarf2read.c (create_debug_types_hash_table): Use hex_string
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instead of phex.
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(lookup_dwo_unit, create_dwo_debug_info_hash_table_reader): Ditto.
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138
gdb/dwarf2read.c
138
gdb/dwarf2read.c
@ -742,9 +742,12 @@ struct dwo_file
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/* Section info for this file. */
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struct dwo_sections sections;
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/* Table of CUs in the file.
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Each element is a struct dwo_unit. */
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htab_t cus;
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/* The CU in the file.
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We only support one because having more than one requires hacking the
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dwo_name of each to match, which is highly unlikely to happen.
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Doing this means all TUs can share comp_dir: We also assume that
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DW_AT_comp_dir across all TUs in a DWO file will be identical. */
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struct dwo_unit *cu;
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/* Table of TUs in the file.
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Each element is a struct dwo_unit. */
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@ -8388,82 +8391,64 @@ allocate_dwo_unit_table (struct objfile *objfile)
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/* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */
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struct create_dwo_info_table_data
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struct create_dwo_cu_data
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{
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struct dwo_file *dwo_file;
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htab_t cu_htab;
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struct dwo_unit dwo_unit;
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};
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/* die_reader_func for create_dwo_debug_info_hash_table. */
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/* die_reader_func for create_dwo_cu. */
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static void
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create_dwo_debug_info_hash_table_reader (const struct die_reader_specs *reader,
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const gdb_byte *info_ptr,
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struct die_info *comp_unit_die,
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int has_children,
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void *datap)
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create_dwo_cu_reader (const struct die_reader_specs *reader,
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const gdb_byte *info_ptr,
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struct die_info *comp_unit_die,
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int has_children,
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void *datap)
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{
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struct dwarf2_cu *cu = reader->cu;
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struct objfile *objfile = dwarf2_per_objfile->objfile;
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sect_offset offset = cu->per_cu->offset;
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struct dwarf2_section_info *section = cu->per_cu->section;
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struct create_dwo_info_table_data *data = datap;
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struct create_dwo_cu_data *data = datap;
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struct dwo_file *dwo_file = data->dwo_file;
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htab_t cu_htab = data->cu_htab;
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void **slot;
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struct dwo_unit *dwo_unit = &data->dwo_unit;
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struct attribute *attr;
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struct dwo_unit *dwo_unit;
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attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu);
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if (attr == NULL)
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{
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error (_("Dwarf Error: debug entry at offset 0x%x is missing"
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" its dwo_id [in module %s]"),
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offset.sect_off, dwo_file->dwo_name);
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complaint (&symfile_complaints,
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_("Dwarf Error: debug entry at offset 0x%x is missing"
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" its dwo_id [in module %s]"),
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offset.sect_off, dwo_file->dwo_name);
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return;
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}
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dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit);
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dwo_unit->dwo_file = dwo_file;
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dwo_unit->signature = DW_UNSND (attr);
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dwo_unit->section = section;
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dwo_unit->offset = offset;
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dwo_unit->length = cu->per_cu->length;
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slot = htab_find_slot (cu_htab, dwo_unit, INSERT);
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gdb_assert (slot != NULL);
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if (*slot != NULL)
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{
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const struct dwo_unit *dup_dwo_unit = *slot;
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complaint (&symfile_complaints,
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_("debug entry at offset 0x%x is duplicate to the entry at"
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" offset 0x%x, dwo_id %s [in module %s]"),
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offset.sect_off, dup_dwo_unit->offset.sect_off,
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hex_string (dwo_unit->signature), dwo_file->dwo_name);
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}
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else
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*slot = dwo_unit;
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if (dwarf2_read_debug)
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fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n",
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offset.sect_off, hex_string (dwo_unit->signature));
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}
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/* Create a hash table to map DWO IDs to their CU entry in
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.debug_info.dwo in DWO_FILE.
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Note: This function processes DWO files only, not DWP files.
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Note: A DWO file generally contains one CU, but we don't assume this. */
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/* Create the dwo_unit for the lone CU in DWO_FILE.
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Note: This function processes DWO files only, not DWP files. */
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static htab_t
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create_dwo_debug_info_hash_table (struct dwo_file *dwo_file)
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static struct dwo_unit *
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create_dwo_cu (struct dwo_file *dwo_file)
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{
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struct objfile *objfile = dwarf2_per_objfile->objfile;
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struct dwarf2_section_info *section = &dwo_file->sections.info;
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bfd *abfd;
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htab_t cu_htab;
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const gdb_byte *info_ptr, *end_ptr;
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struct create_dwo_info_table_data create_dwo_info_table_data;
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struct create_dwo_cu_data create_dwo_cu_data;
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struct dwo_unit *dwo_unit;
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dwarf2_read_section (objfile, section);
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info_ptr = section->buffer;
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@ -8476,19 +8461,22 @@ create_dwo_debug_info_hash_table (struct dwo_file *dwo_file)
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abfd = section->asection->owner;
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if (dwarf2_read_debug)
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fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n",
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bfd_get_filename (abfd));
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{
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fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n",
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bfd_section_name (abfd, section->asection),
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bfd_get_filename (abfd));
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}
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cu_htab = allocate_dwo_unit_table (objfile);
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create_dwo_info_table_data.dwo_file = dwo_file;
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create_dwo_info_table_data.cu_htab = cu_htab;
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create_dwo_cu_data.dwo_file = dwo_file;
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dwo_unit = NULL;
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end_ptr = info_ptr + section->size;
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while (info_ptr < end_ptr)
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{
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struct dwarf2_per_cu_data per_cu;
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memset (&create_dwo_cu_data.dwo_unit, 0,
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sizeof (create_dwo_cu_data.dwo_unit));
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memset (&per_cu, 0, sizeof (per_cu));
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per_cu.objfile = objfile;
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per_cu.is_debug_types = 0;
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@ -8498,13 +8486,30 @@ create_dwo_debug_info_hash_table (struct dwo_file *dwo_file)
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init_cutu_and_read_dies_no_follow (&per_cu,
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&dwo_file->sections.abbrev,
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dwo_file,
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create_dwo_debug_info_hash_table_reader,
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&create_dwo_info_table_data);
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create_dwo_cu_reader,
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&create_dwo_cu_data);
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if (create_dwo_cu_data.dwo_unit.dwo_file != NULL)
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{
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/* If we've already found one, complain. We only support one
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because having more than one requires hacking the dwo_name of
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each to match, which is highly unlikely to happen. */
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if (dwo_unit != NULL)
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{
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complaint (&symfile_complaints,
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_("Multiple CUs in DWO file %s [in module %s]"),
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dwo_file->dwo_name, objfile->name);
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break;
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}
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dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit);
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*dwo_unit = create_dwo_cu_data.dwo_unit;
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}
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info_ptr += per_cu.length;
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}
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return cu_htab;
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return dwo_unit;
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}
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/* DWP file .debug_{cu,tu}_index section format:
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@ -9055,7 +9060,7 @@ dwarf2_locate_dwo_sections (bfd *abfd, asection *sectp, void *dwo_sections_ptr)
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}
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/* Initialize the use of the DWO file specified by DWO_NAME and referenced
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by PER_CU.
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by PER_CU. This is for the non-DWP case.
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The result is NULL if DWO_NAME can't be found. */
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static struct dwo_file *
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@ -9083,7 +9088,7 @@ open_and_init_dwo_file (struct dwarf2_per_cu_data *per_cu,
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bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections);
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dwo_file->cus = create_dwo_debug_info_hash_table (dwo_file);
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dwo_file->cu = create_dwo_cu (dwo_file);
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dwo_file->tus = create_debug_types_hash_table (dwo_file,
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dwo_file->sections.types);
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@ -9314,26 +9319,31 @@ lookup_dwo_cutu (struct dwarf2_per_cu_data *this_unit,
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if (dwo_file != NULL)
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{
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htab_t htab = is_debug_types ? dwo_file->tus : dwo_file->cus;
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struct dwo_unit *dwo_cutu = NULL;
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if (htab != NULL)
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if (is_debug_types && dwo_file->tus)
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{
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struct dwo_unit find_dwo_cutu, *dwo_cutu;
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struct dwo_unit find_dwo_cutu;
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memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu));
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find_dwo_cutu.signature = signature;
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dwo_cutu = htab_find (htab, &find_dwo_cutu);
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dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu);
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}
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else if (!is_debug_types && dwo_file->cu)
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{
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if (signature == dwo_file->cu->signature)
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dwo_cutu = dwo_file->cu;
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}
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if (dwo_cutu != NULL)
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if (dwo_cutu != NULL)
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{
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if (dwarf2_read_debug)
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{
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if (dwarf2_read_debug)
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{
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fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n",
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kind, dwo_name, hex_string (signature),
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host_address_to_string (dwo_cutu));
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}
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return dwo_cutu;
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fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n",
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kind, dwo_name, hex_string (signature),
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host_address_to_string (dwo_cutu));
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}
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return dwo_cutu;
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}
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}
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