return get_frame_base (this_frame);
}
\f
-const struct objfile_data *dwarf2_frame_objfile_data;
+const struct objfile_key<dwarf2_fde_table,
+ gdb::noop_deleter<dwarf2_fde_table>>
+ dwarf2_frame_objfile_data;
static unsigned int
read_1_byte (bfd *abfd, const gdb_byte *buf)
read_initial_length (bfd *abfd, const gdb_byte *buf,
unsigned int *bytes_read_ptr)
{
- LONGEST result;
+ ULONGEST result;
result = bfd_get_32 (abfd, buf);
if (result == 0xffffffff)
CORE_ADDR offset;
CORE_ADDR seek_pc;
- fde_table = ((struct dwarf2_fde_table *)
- objfile_data (objfile, dwarf2_frame_objfile_data));
+ fde_table = dwarf2_frame_objfile_data.get (objfile);
if (fde_table == NULL)
{
dwarf2_build_frame_info (objfile);
- fde_table = ((struct dwarf2_fde_table *)
- objfile_data (objfile, dwarf2_frame_objfile_data));
+ fde_table = dwarf2_frame_objfile_data.get (objfile);
}
gdb_assert (fde_table != NULL);
{
struct gdbarch *gdbarch = get_objfile_arch (unit->objfile);
const gdb_byte *buf, *end;
- LONGEST length;
+ ULONGEST length;
unsigned int bytes_read;
int dwarf64_p;
ULONGEST cie_id;
buf = start;
length = read_initial_length (unit->abfd, buf, &bytes_read);
buf += bytes_read;
- end = buf + length;
-
- /* Are we still within the section? */
- if (end > unit->dwarf_frame_buffer + unit->dwarf_frame_size)
- return NULL;
+ end = buf + (size_t) length;
if (length == 0)
return end;
+ /* Are we still within the section? */
+ if (end <= buf || end > unit->dwarf_frame_buffer + unit->dwarf_frame_size)
+ return NULL;
+
/* Distinguish between 32 and 64-bit encoded frame info. */
dwarf64_p = (bytes_read == 12);
xfree (fde_table.entries);
}
- set_objfile_data (objfile, dwarf2_frame_objfile_data, fde_table2);
+ dwarf2_frame_objfile_data.set (objfile, fde_table2);
}
/* Handle 'maintenance show dwarf unwinders'. */
_initialize_dwarf2_frame (void)
{
dwarf2_frame_data = gdbarch_data_register_pre_init (dwarf2_frame_init);
- dwarf2_frame_objfile_data = register_objfile_data ();
add_setshow_boolean_cmd ("unwinders", class_obscure,
&dwarf2_frame_unwinders_enabled_p , _("\