ARM CMSE symbols

[external/binutils.git] / bfd / elf.c

diff --git a/bfd/elf.c b/bfd/elf.c
index 1c77a79..42ae162 100644 (file)
--- a/bfd/elf.c
+++ b/bfd/elf.c
@@ -999,6 +999,18 @@ convert_zdebug_to_debug (bfd *abfd, const char *name)
   return new_name;
 }
 
+/* This a copy of lto_section defined in GCC (lto-streamer.h).  */
+
+struct lto_section
+{
+  int16_t major_version;
+  int16_t minor_version;
+  unsigned char slim_object;
+
+  /* Flags is a private field that is not defined publicly.  */
+  uint16_t flags;
+};
+
 /* Make a BFD section from an ELF section.  We store a pointer to the
    BFD section in the bfd_section field of the header.  */
 
@@ -1275,6 +1287,17 @@ _bfd_elf_make_section_from_shdr (bfd *abfd,
        newsect->flags |= SEC_ELF_RENAME;
     }
 
+  /* GCC uses .gnu.lto_.lto.<some_hash> as a LTO bytecode information
+     section.  */
+  const char *lto_section_name = ".gnu.lto_.lto.";
+  if (strncmp (name, lto_section_name, strlen (lto_section_name)) == 0)
+    {
+      struct lto_section lsection;
+      if (bfd_get_section_contents (abfd, newsect, &lsection, 0,
+                                   sizeof (struct lto_section)))
+       abfd->lto_slim_object = lsection.slim_object;
+    }
+
   return TRUE;
 }
 
@@ -6568,7 +6591,8 @@ _bfd_elf_write_object_contents (bfd *abfd)
          || !_bfd_elf_strtab_emit (abfd, elf_shstrtab (abfd))))
     return FALSE;
 
-  (*bed->elf_backend_final_write_processing) (abfd, elf_linker (abfd));
+  if (!(*bed->elf_backend_final_write_processing) (abfd))
+    return FALSE;
 
   if (!bed->s->write_shdrs_and_ehdr (abfd))
     return FALSE;
@@ -8948,7 +8972,7 @@ _bfd_elf_find_nearest_line (bfd *abfd,
   if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
                                     filename_ptr, functionname_ptr,
                                     line_ptr, discriminator_ptr,
-                                    dwarf_debug_sections, 0,
+                                    dwarf_debug_sections,
                                     &elf_tdata (abfd)->dwarf2_find_line_info)
       || _bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset,
                                        filename_ptr, functionname_ptr,
@@ -8988,7 +9012,7 @@ _bfd_elf_find_line (bfd *abfd, asymbol **symbols, asymbol *symbol,
 {
   return _bfd_dwarf2_find_nearest_line (abfd, symbols, symbol, NULL, 0,
                                        filename_ptr, NULL, line_ptr, NULL,
-                                       dwarf_debug_sections, 0,
+                                       dwarf_debug_sections,
                                        &elf_tdata (abfd)->dwarf2_find_line_info);
 }
 
@@ -12123,9 +12147,8 @@ _bfd_elf_post_process_headers (bfd *abfd ATTRIBUTE_UNUSED,
 {
 }
 
-void
-_bfd_elf_final_write_processing (bfd *abfd,
-                                bfd_boolean linker ATTRIBUTE_UNUSED)
+bfd_boolean
+_bfd_elf_final_write_processing (bfd *abfd)
 {
   Elf_Internal_Ehdr *i_ehdrp;  /* ELF file header, internal form.  */
 
@@ -12137,9 +12160,24 @@ _bfd_elf_final_write_processing (bfd *abfd,
   /* Set the osabi field to ELFOSABI_GNU if the binary contains
      SHF_GNU_MBIND sections or symbols of STT_GNU_IFUNC type or
      STB_GNU_UNIQUE binding.  */
-  if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE
-      && elf_tdata (abfd)->has_gnu_osabi)
-    i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU;
+  if (elf_tdata (abfd)->has_gnu_osabi != 0)
+    {
+      if (i_ehdrp->e_ident[EI_OSABI] == ELFOSABI_NONE)
+       i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_GNU;
+      else if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_GNU
+              && i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_FREEBSD)
+       {
+         if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_mbind)
+           _bfd_error_handler (_("GNU_MBIND section is unsupported"));
+         if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_ifunc)
+           _bfd_error_handler (_("symbol type STT_GNU_IFUNC is unsupported"));
+         if (elf_tdata (abfd)->has_gnu_osabi & elf_gnu_osabi_unique)
+           _bfd_error_handler (_("symbol binding STB_GNU_UNIQUE is unsupported"));
+         bfd_set_error (bfd_error_bad_value);
+         return FALSE;
+       }
+    }
+  return TRUE;
 }