/* Section info for this file. */
struct dwo_sections sections;
- /* Table of CUs in the file.
- Each element is a struct dwo_unit. */
- htab_t cus;
+ /* The CU in the file.
+ We only support one because having more than one requires hacking the
+ dwo_name of each to match, which is highly unlikely to happen.
+ Doing this means all TUs can share comp_dir: We also assume that
+ DW_AT_comp_dir across all TUs in a DWO file will be identical. */
+ struct dwo_unit *cu;
/* Table of TUs in the file.
Each element is a struct dwo_unit. */
/* Structure used to pass data to create_dwo_debug_info_hash_table_reader. */
-struct create_dwo_info_table_data
+struct create_dwo_cu_data
{
struct dwo_file *dwo_file;
- htab_t cu_htab;
+ struct dwo_unit dwo_unit;
};
-/* die_reader_func for create_dwo_debug_info_hash_table. */
+/* die_reader_func for create_dwo_cu. */
static void
-create_dwo_debug_info_hash_table_reader (const struct die_reader_specs *reader,
- const gdb_byte *info_ptr,
- struct die_info *comp_unit_die,
- int has_children,
- void *datap)
+create_dwo_cu_reader (const struct die_reader_specs *reader,
+ const gdb_byte *info_ptr,
+ struct die_info *comp_unit_die,
+ int has_children,
+ void *datap)
{
struct dwarf2_cu *cu = reader->cu;
struct objfile *objfile = dwarf2_per_objfile->objfile;
sect_offset offset = cu->per_cu->offset;
struct dwarf2_section_info *section = cu->per_cu->section;
- struct create_dwo_info_table_data *data = datap;
+ struct create_dwo_cu_data *data = datap;
struct dwo_file *dwo_file = data->dwo_file;
- htab_t cu_htab = data->cu_htab;
- void **slot;
+ struct dwo_unit *dwo_unit = &data->dwo_unit;
struct attribute *attr;
- struct dwo_unit *dwo_unit;
attr = dwarf2_attr (comp_unit_die, DW_AT_GNU_dwo_id, cu);
if (attr == NULL)
{
- error (_("Dwarf Error: debug entry at offset 0x%x is missing"
- " its dwo_id [in module %s]"),
- offset.sect_off, dwo_file->dwo_name);
+ complaint (&symfile_complaints,
+ _("Dwarf Error: debug entry at offset 0x%x is missing"
+ " its dwo_id [in module %s]"),
+ offset.sect_off, dwo_file->dwo_name);
return;
}
- dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit);
dwo_unit->dwo_file = dwo_file;
dwo_unit->signature = DW_UNSND (attr);
dwo_unit->section = section;
dwo_unit->offset = offset;
dwo_unit->length = cu->per_cu->length;
- slot = htab_find_slot (cu_htab, dwo_unit, INSERT);
- gdb_assert (slot != NULL);
- if (*slot != NULL)
- {
- const struct dwo_unit *dup_dwo_unit = *slot;
-
- complaint (&symfile_complaints,
- _("debug entry at offset 0x%x is duplicate to the entry at"
- " offset 0x%x, dwo_id %s [in module %s]"),
- offset.sect_off, dup_dwo_unit->offset.sect_off,
- hex_string (dwo_unit->signature), dwo_file->dwo_name);
- }
- else
- *slot = dwo_unit;
-
if (dwarf2_read_debug)
fprintf_unfiltered (gdb_stdlog, " offset 0x%x, dwo_id %s\n",
offset.sect_off, hex_string (dwo_unit->signature));
}
-/* Create a hash table to map DWO IDs to their CU entry in
- .debug_info.dwo in DWO_FILE.
- Note: This function processes DWO files only, not DWP files.
- Note: A DWO file generally contains one CU, but we don't assume this. */
+/* Create the dwo_unit for the lone CU in DWO_FILE.
+ Note: This function processes DWO files only, not DWP files. */
-static htab_t
-create_dwo_debug_info_hash_table (struct dwo_file *dwo_file)
+static struct dwo_unit *
+create_dwo_cu (struct dwo_file *dwo_file)
{
struct objfile *objfile = dwarf2_per_objfile->objfile;
struct dwarf2_section_info *section = &dwo_file->sections.info;
bfd *abfd;
htab_t cu_htab;
const gdb_byte *info_ptr, *end_ptr;
- struct create_dwo_info_table_data create_dwo_info_table_data;
+ struct create_dwo_cu_data create_dwo_cu_data;
+ struct dwo_unit *dwo_unit;
dwarf2_read_section (objfile, section);
info_ptr = section->buffer;
abfd = section->asection->owner;
if (dwarf2_read_debug)
- fprintf_unfiltered (gdb_stdlog, "Reading .debug_info.dwo for %s:\n",
- bfd_get_filename (abfd));
-
- cu_htab = allocate_dwo_unit_table (objfile);
+ {
+ fprintf_unfiltered (gdb_stdlog, "Reading %s for %s:\n",
+ bfd_section_name (abfd, section->asection),
+ bfd_get_filename (abfd));
+ }
- create_dwo_info_table_data.dwo_file = dwo_file;
- create_dwo_info_table_data.cu_htab = cu_htab;
+ create_dwo_cu_data.dwo_file = dwo_file;
+ dwo_unit = NULL;
end_ptr = info_ptr + section->size;
while (info_ptr < end_ptr)
{
struct dwarf2_per_cu_data per_cu;
+ memset (&create_dwo_cu_data.dwo_unit, 0,
+ sizeof (create_dwo_cu_data.dwo_unit));
memset (&per_cu, 0, sizeof (per_cu));
per_cu.objfile = objfile;
per_cu.is_debug_types = 0;
init_cutu_and_read_dies_no_follow (&per_cu,
&dwo_file->sections.abbrev,
dwo_file,
- create_dwo_debug_info_hash_table_reader,
- &create_dwo_info_table_data);
+ create_dwo_cu_reader,
+ &create_dwo_cu_data);
+
+ if (create_dwo_cu_data.dwo_unit.dwo_file != NULL)
+ {
+ /* If we've already found one, complain. We only support one
+ because having more than one requires hacking the dwo_name of
+ each to match, which is highly unlikely to happen. */
+ if (dwo_unit != NULL)
+ {
+ complaint (&symfile_complaints,
+ _("Multiple CUs in DWO file %s [in module %s]"),
+ dwo_file->dwo_name, objfile->name);
+ break;
+ }
+
+ dwo_unit = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct dwo_unit);
+ *dwo_unit = create_dwo_cu_data.dwo_unit;
+ }
info_ptr += per_cu.length;
}
- return cu_htab;
+ return dwo_unit;
}
/* DWP file .debug_{cu,tu}_index section format:
}
/* Initialize the use of the DWO file specified by DWO_NAME and referenced
- by PER_CU.
+ by PER_CU. This is for the non-DWP case.
The result is NULL if DWO_NAME can't be found. */
static struct dwo_file *
bfd_map_over_sections (dbfd, dwarf2_locate_dwo_sections, &dwo_file->sections);
- dwo_file->cus = create_dwo_debug_info_hash_table (dwo_file);
+ dwo_file->cu = create_dwo_cu (dwo_file);
dwo_file->tus = create_debug_types_hash_table (dwo_file,
dwo_file->sections.types);
if (dwo_file != NULL)
{
- htab_t htab = is_debug_types ? dwo_file->tus : dwo_file->cus;
+ struct dwo_unit *dwo_cutu = NULL;
- if (htab != NULL)
+ if (is_debug_types && dwo_file->tus)
{
- struct dwo_unit find_dwo_cutu, *dwo_cutu;
+ struct dwo_unit find_dwo_cutu;
memset (&find_dwo_cutu, 0, sizeof (find_dwo_cutu));
find_dwo_cutu.signature = signature;
- dwo_cutu = htab_find (htab, &find_dwo_cutu);
+ dwo_cutu = htab_find (dwo_file->tus, &find_dwo_cutu);
+ }
+ else if (!is_debug_types && dwo_file->cu)
+ {
+ if (signature == dwo_file->cu->signature)
+ dwo_cutu = dwo_file->cu;
+ }
- if (dwo_cutu != NULL)
+ if (dwo_cutu != NULL)
+ {
+ if (dwarf2_read_debug)
{
- if (dwarf2_read_debug)
- {
- fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n",
- kind, dwo_name, hex_string (signature),
- host_address_to_string (dwo_cutu));
- }
- return dwo_cutu;
+ fprintf_unfiltered (gdb_stdlog, "DWO %s %s(%s) found: @%s\n",
+ kind, dwo_name, hex_string (signature),
+ host_address_to_string (dwo_cutu));
}
+ return dwo_cutu;
}
}
projects / binutils-gdb.git / commitdiff