- gdb_assert (current_program_space == b->pspace);
- elf_gnu_ifunc_record_cache (b->addr_string, resolved_pc);
-
- sal = find_pc_line (resolved_pc, 0);
- sals.nelts = 1;
- sals.sals = &sal;
- sals_end.nelts = 0;
-
- b->type = bp_breakpoint;
- update_breakpoint_locations (b, sals, sals_end);
-}
-
-struct build_id
- {
- size_t size;
- gdb_byte data[1];
- };
-
-/* Locate NT_GNU_BUILD_ID from ABFD and return its content. */
-
-static struct build_id *
-build_id_bfd_get (bfd *abfd)
-{
- struct build_id *retval;
-
- if (!bfd_check_format (abfd, bfd_object)
- || bfd_get_flavour (abfd) != bfd_target_elf_flavour
- || elf_tdata (abfd)->build_id == NULL)
- return NULL;
-
- retval = xmalloc (sizeof *retval - 1 + elf_tdata (abfd)->build_id_size);
- retval->size = elf_tdata (abfd)->build_id_size;
- memcpy (retval->data, elf_tdata (abfd)->build_id, retval->size);
-
- return retval;
-}
-
-/* Return if FILENAME has NT_GNU_BUILD_ID matching the CHECK value. */
-
-static int
-build_id_verify (const char *filename, struct build_id *check)
-{
- bfd *abfd;
- struct build_id *found = NULL;
- int retval = 0;
-
- /* We expect to be silent on the non-existing files. */
- abfd = bfd_open_maybe_remote (filename);
- if (abfd == NULL)
- return 0;
-
- found = build_id_bfd_get (abfd);
-
- if (found == NULL)
- warning (_("File \"%s\" has no build-id, file skipped"), filename);
- else if (found->size != check->size
- || memcmp (found->data, check->data, found->size) != 0)
- warning (_("File \"%s\" has a different build-id, file skipped"),
- filename);
- else
- retval = 1;
-
- gdb_bfd_close_or_warn (abfd);
-
- xfree (found);
-
- return retval;
-}
-
-static char *
-build_id_to_debug_filename (struct build_id *build_id)
-{
- char *link, *debugdir, *retval = NULL;
-
- /* DEBUG_FILE_DIRECTORY/.build-id/ab/cdef */
- link = alloca (strlen (debug_file_directory) + (sizeof "/.build-id/" - 1) + 1
- + 2 * build_id->size + (sizeof ".debug" - 1) + 1);
-
- /* Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
- cause "/.build-id/..." lookups. */
-
- debugdir = debug_file_directory;
- do
- {
- char *s, *debugdir_end;
- gdb_byte *data = build_id->data;
- size_t size = build_id->size;
-
- while (*debugdir == DIRNAME_SEPARATOR)
- debugdir++;
-
- debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR);
- if (debugdir_end == NULL)
- debugdir_end = &debugdir[strlen (debugdir)];
-
- memcpy (link, debugdir, debugdir_end - debugdir);
- s = &link[debugdir_end - debugdir];
- s += sprintf (s, "/.build-id/");
- if (size > 0)
- {
- size--;
- s += sprintf (s, "%02x", (unsigned) *data++);
- }
- if (size > 0)
- *s++ = '/';
- while (size-- > 0)
- s += sprintf (s, "%02x", (unsigned) *data++);
- strcpy (s, ".debug");
-
- /* lrealpath() is expensive even for the usually non-existent files. */
- if (access (link, F_OK) == 0)
- retval = lrealpath (link);
-
- if (retval != NULL && !build_id_verify (retval, build_id))
- {
- xfree (retval);
- retval = NULL;
- }
-
- if (retval != NULL)
- break;
-
- debugdir = debugdir_end;
- }
- while (*debugdir != 0);