/* ELF emulation code for targets using elf.em.
- Copyright (C) 1991-2019 Free Software Foundation, Inc.
+ Copyright (C) 1991-2020 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
return FALSE;
}
+ track_dependency_files (name);
+
/* Linker needs to decompress sections. */
abfd->flags |= BFD_DECOMPRESS;
bfd_elf_set_dyn_lib_class (abfd, (enum dynamic_lib_link_class) link_class);
+ *link_info.input_bfds_tail = abfd;
+ link_info.input_bfds_tail = &abfd->link.next;
+
/* Add this file into the symbol table. */
if (! bfd_link_add_symbols (abfd, &link_info))
einfo (_("%F%P: %pB: error adding symbols: %E\n"), abfd);
ldelf_parse_ld_so_conf (info, pattern);
#endif
- if (newp)
- free (newp);
+ free (newp);
}
static bfd_boolean
static bfd_boolean
ldelf_check_ld_so_conf (const struct bfd_link_needed_list *l, int force,
- int elfsize)
+ int elfsize, const char *prefix)
{
static bfd_boolean initialized;
static const char *ld_so_conf;
info.path = NULL;
info.len = info.alloc = 0;
- tmppath = concat (ld_sysroot, "${prefix}/etc/ld.so.conf",
+ tmppath = concat (ld_sysroot, prefix, "/etc/ld.so.conf",
(const char *) NULL);
if (!ldelf_parse_ld_so_conf (&info, tmppath))
{
void
ldelf_after_open (int use_libpath, int native, int is_linux, int is_freebsd,
- int elfsize)
+ int elfsize, const char *prefix)
{
struct bfd_link_needed_list *needed, *l;
struct elf_link_hash_table *htab;
asection *s;
bfd *abfd;
+ bfd **save_input_bfd_tail;
after_open_default ();
get_elf_backend_data (link_info.output_bfd)->setup_gnu_properties (&link_info);
+ /* Do not allow executable files to be used as inputs to the link. */
+ for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
+ {
+ if (elf_tdata (abfd) != NULL
+ && elf_tdata (abfd)->elf_header != NULL
+ /* FIXME: Maybe check for other non-supportable types as well ? */
+ && elf_tdata (abfd)->elf_header->e_type == ET_EXEC)
+ einfo (_("%F%P: cannot use executable file '%pB' as input to a link\n"),
+ abfd);
+ }
+
if (bfd_link_relocatable (&link_info))
{
if (link_info.execstack == !link_info.noexecstack)
{
int type = 0;
+ if (bfd_link_executable (& link_info)
+ && elf_tdata (abfd)->elf_header->e_type == ET_EXEC)
+ {
+ einfo (_("%F%P: cannot use executable file '%pB' as input to a link\n"),
+ abfd);
+ }
+
if (bfd_input_just_syms (abfd))
continue;
special action by the person doing the link. Note that the
needed list can actually grow while we are stepping through this
loop. */
+ save_input_bfd_tail = link_info.input_bfds_tail;
needed = bfd_elf_get_needed_list (link_info.output_bfd, &link_info);
for (l = needed; l != NULL; l = l->next)
{
break;
if (is_linux
- && ldelf_check_ld_so_conf (l, force, elfsize))
+ && ldelf_check_ld_so_conf (l, force, elfsize, prefix))
break;
}
l->name, l->by);
}
+ for (abfd = link_info.input_bfds; abfd; abfd = abfd->link.next)
+ if (bfd_get_format (abfd) == bfd_object
+ && ((abfd->flags) & DYNAMIC) != 0
+ && bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && (elf_dyn_lib_class (abfd) & (DYN_AS_NEEDED | DYN_NO_NEEDED)) == 0
+ && elf_dt_name (abfd) != NULL)
+ {
+ if (bfd_elf_add_dt_needed_tag (abfd, &link_info) < 0)
+ einfo (_("%F%P: failed to add DT_NEEDED dynamic tag\n"));
+ }
+
+ link_info.input_bfds_tail = save_input_bfd_tail;
+ *save_input_bfd_tail = NULL;
+
if (link_info.eh_frame_hdr_type == COMPACT_EH_HDR)
if (!bfd_elf_parse_eh_frame_entries (NULL, &link_info))
einfo (_("%F%P: failed to parse EH frame entries\n"));
lang_output_section_statement_type *last_rel = NULL;
lang_output_section_statement_type *last_rel_alloc = NULL;
- for (lookup = &lang_os_list.head->output_section_statement;
+ for (lookup = (void *) lang_os_list.head;
lookup != NULL;
lookup = lookup->next)
{
if (elf_section_data (out)->this_hdr.sh_info
!= elf_section_data (in)->this_hdr.sh_info)
return FALSE;
- /* We can't merge with member of output section group nor merge two
- sections with differing SHF_EXCLUDE when doing a relocatable link.
- */
+ /* We can't merge with a member of an output section group or merge
+ two sections with differing SHF_EXCLUDE or other processor and OS
+ specific flags when doing a relocatable link. */
if (bfd_link_relocatable (&link_info)
&& (elf_next_in_group (out) != NULL
|| ((elf_section_flags (out) ^ elf_section_flags (in))
- & SHF_EXCLUDE) != 0))
+ & (SHF_MASKPROC | SHF_MASKOS)) != 0))
return FALSE;
return _bfd_elf_match_sections_by_type (link_info.output_bfd, out,
in->owner, in);
{
/* Find the output mbind section with the same type, attributes
and sh_info field. */
- for (os = &lang_os_list.head->output_section_statement;
+ for (os = (void *) lang_os_list.head;
os != NULL;
os = os->next)
if (os->bfd_section != NULL
_bfd_elf_match_sections_by_type);
if (after == NULL)
/* *ABS* is always the first output section statement. */
- after = &lang_os_list.head->output_section_statement;
+ after = (void *) lang_os_list.head;
}
return lang_insert_orphan (s, secname, constraint, after, place, NULL, NULL);
}
+
+void
+ldelf_before_place_orphans (void)
+{
+ bfd *abfd;
+
+ for (abfd = link_info.input_bfds;
+ abfd != (bfd *) NULL; abfd = abfd->link.next)
+ if (bfd_get_flavour (abfd) == bfd_target_elf_flavour
+ && bfd_count_sections (abfd) != 0
+ && !bfd_input_just_syms (abfd))
+ {
+ asection *isec;
+ for (isec = abfd->sections; isec != NULL; isec = isec->next)
+ {
+ /* Discard a section if any of its linked-to section has
+ been discarded. */
+ asection *linked_to_sec;
+ for (linked_to_sec = elf_linked_to_section (isec);
+ linked_to_sec != NULL;
+ linked_to_sec = elf_linked_to_section (linked_to_sec))
+ if (discarded_section (linked_to_sec))
+ {
+ isec->output_section = bfd_abs_section_ptr;
+ break;
+ }
+ }
+ }
+}
projects / deliverable / binutils-gdb.git / blobdiff