Automatic date update in version.in

[deliverable/binutils-gdb.git] / bfd / elf-ifunc.c

diff --git a/bfd/elf-ifunc.c b/bfd/elf-ifunc.c
index 1fab4401360ef1d680ca3763fca46c5f1be71190..b044164216becedc957da2c348852bbd4386fafb 100644 (file)
--- a/bfd/elf-ifunc.c
+++ b/bfd/elf-ifunc.c
@@ -1,5 +1,5 @@
 /* ELF STT_GNU_IFUNC support.
-   Copyright (C) 2009-2018 Free Software Foundation, Inc.
+   Copyright (C) 2009-2020 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -62,8 +62,7 @@ _bfd_elf_create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
       s = bfd_make_section_with_flags (abfd, rel_sec,
                                       flags | SEC_READONLY);
       if (s == NULL
-         || ! bfd_set_section_alignment (abfd, s,
-                                         bed->s->log_file_align))
+         || !bfd_set_section_alignment (s, bed->s->log_file_align))
        return FALSE;
       htab->irelifunc = s;
     }
@@ -73,7 +72,7 @@ _bfd_elf_create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
         for static executables.   */
       s = bfd_make_section_with_flags (abfd, ".iplt", pltflags);
       if (s == NULL
-         || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment))
+         || !bfd_set_section_alignment (s, bed->plt_alignment))
        return FALSE;
       htab->iplt = s;
 
@@ -82,8 +81,7 @@ _bfd_elf_create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
                                        ? ".rela.iplt" : ".rel.iplt"),
                                       flags | SEC_READONLY);
       if (s == NULL
-         || ! bfd_set_section_alignment (abfd, s,
-                                         bed->s->log_file_align))
+         || !bfd_set_section_alignment (s, bed->s->log_file_align))
        return FALSE;
       htab->irelplt = s;
 
@@ -94,8 +92,7 @@ _bfd_elf_create_ifunc_sections (bfd *abfd, struct bfd_link_info *info)
       else
        s = bfd_make_section_with_flags (abfd, ".igot", flags);
       if (s == NULL
-         || !bfd_set_section_alignment (abfd, s,
-                                        bed->s->log_file_align))
+         || !bfd_set_section_alignment (s, bed->s->log_file_align))
        return FALSE;
       htab->igotplt = s;
     }
@@ -131,8 +128,15 @@ _bfd_elf_allocate_ifunc_dyn_relocs (struct bfd_link_info *info,
      the resolved function may be used.  But in non-PIC executable,
      the address of its .plt slot may be used.  Pointer equality may
      not work correctly.  PIE or non-PLT reference should be used if
-     pointer equality is required here.  */
+     pointer equality is required here.
+
+     If STT_GNU_IFUNC symbol is defined in position-dependent executable,
+     backend should change it to the normal function and set its address
+     to its PLT entry which should be resolved by R_*_IRELATIVE at
+     run-time.  All external references should be resolved to its PLT in
+     executable.  */
   if (!need_dynreloc
+      && !(bfd_link_pde (info) && h->def_regular)
       && (h->dynindx != -1
          || info->export_dynamic)
       && h->pointer_equality_needed)
@@ -140,7 +144,7 @@ _bfd_elf_allocate_ifunc_dyn_relocs (struct bfd_link_info *info,
       info->callbacks->einfo
        /* xgettext:c-format */
        (_("%F%P: dynamic STT_GNU_IFUNC symbol `%s' with pointer "
-          "equality in `%B' can not be used when making an "
+          "equality in `%pB' can not be used when making an "
           "executable; recompile with -fPIE and relink with -pie\n"),
         h->root.root.string,
         h->root.u.def.section->owner);
@@ -197,7 +201,7 @@ _bfd_elf_allocate_ifunc_dyn_relocs (struct bfd_link_info *info,
       return TRUE;
     }
 
-keep:
+ keep:
   bed = get_elf_backend_data (info->output_bfd);
   if (bed->rela_plts_and_copies_p)
     sizeof_reloc = bed->s->sizeof_rela;