ld: Add --enable-separate-code

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

diff --git a/bfd/elf-properties.c b/bfd/elf-properties.c
index 13d620d9c47478e7906eecda22422b4d8568571d..50c0e9d7035a76efaa27e9957521f6d5b90b18d0 100644 (file)
--- a/bfd/elf-properties.c
+++ b/bfd/elf-properties.c
@@ -1,5 +1,5 @@
 /* ELF program property support.
-   Copyright (C) 2017 Free Software Foundation, Inc.
+   Copyright (C) 2017-2018 Free Software Foundation, Inc.
 
    This file is part of BFD, the Binary File Descriptor library.
 
@@ -62,7 +62,7 @@ _bfd_elf_get_property (bfd *abfd, unsigned int type, unsigned int datasz)
   p = (elf_property_list *) bfd_alloc (abfd, sizeof (*p));
   if (p == NULL)
     {
-      _bfd_error_handler (_("%B: out of memory in _bfd_elf_get_property"),
+      _bfd_error_handler (_("%pB: out of memory in _bfd_elf_get_property"),
                          abfd);
       _exit (EXIT_FAILURE);
     }
@@ -88,23 +88,28 @@ _bfd_elf_parse_gnu_properties (bfd *abfd, Elf_Internal_Note *note)
     {
 bad_size:
       _bfd_error_handler
-       (_("warning: %B: corrupt GNU_PROPERTY_TYPE (%ld) size: %#lx"),
+       (_("warning: %pB: corrupt GNU_PROPERTY_TYPE (%ld) size: %#lx"),
         abfd, note->type, note->descsz);
       return FALSE;
     }
 
-  while (1)
+  while (ptr != ptr_end)
     {
-      unsigned int type = bfd_h_get_32 (abfd, ptr);
-      unsigned int datasz = bfd_h_get_32 (abfd, ptr + 4);
+      unsigned int type;
+      unsigned int datasz;
       elf_property *prop;
 
+      if ((size_t) (ptr_end - ptr) < 8)
+       goto bad_size;
+
+      type = bfd_h_get_32 (abfd, ptr);
+      datasz = bfd_h_get_32 (abfd, ptr + 4);
       ptr += 8;
 
-      if ((ptr + datasz) > ptr_end)
+      if (datasz > (size_t) (ptr_end - ptr))
        {
          _bfd_error_handler
-           (_("warning: %B: corrupt GNU_PROPERTY_TYPE (%ld) type (0x%x) datasz: 0x%x"),
+           (_("warning: %pB: corrupt GNU_PROPERTY_TYPE (%ld) type (0x%x) datasz: 0x%x"),
             abfd, note->type, type, datasz);
          /* Clear all properties.  */
          elf_properties (abfd) = NULL;
@@ -143,7 +148,7 @@ bad_size:
              if (datasz != align_size)
                {
                  _bfd_error_handler
-                   (_("warning: %B: corrupt stack size: 0x%x"),
+                   (_("warning: %pB: corrupt stack size: 0x%x"),
                     abfd, datasz);
                  /* Clear all properties.  */
                  elf_properties (abfd) = NULL;
@@ -161,13 +166,14 @@ bad_size:
              if (datasz != 0)
                {
                  _bfd_error_handler
-                   (_("warning: %B: corrupt no copy on protected size: 0x%x"),
+                   (_("warning: %pB: corrupt no copy on protected size: 0x%x"),
                     abfd, datasz);
                  /* Clear all properties.  */
                  elf_properties (abfd) = NULL;
                  return FALSE;
                }
              prop = _bfd_elf_get_property (abfd, type, datasz);
+             elf_has_no_copy_on_protected (abfd) = TRUE;
              prop->pr_kind = property_number;
              goto next;
 
@@ -177,16 +183,11 @@ bad_size:
        }
 
       _bfd_error_handler
-       (_("warning: %B: unsupported GNU_PROPERTY_TYPE (%ld) type: 0x%x"),
+       (_("warning: %pB: unsupported GNU_PROPERTY_TYPE (%ld) type: 0x%x"),
         abfd, note->type, type);
 
 next:
       ptr += (datasz + (align_size - 1)) & ~ (align_size - 1);
-      if (ptr == ptr_end)
-       break;
-
-      if (ptr > (ptr_end - 8))
-       goto bad_size;
     }
 
   return TRUE;
@@ -290,6 +291,9 @@ elf_merge_gnu_property_list (struct bfd_link_info *info, bfd *abfd,
   for (p = *listp; p != NULL; p = p->next)
     if (elf_merge_gnu_properties (info, abfd, NULL, &p->property))
       {
+       if (p->property.pr_type == GNU_PROPERTY_NO_COPY_ON_PROTECTED)
+         elf_has_no_copy_on_protected (abfd) = TRUE;
+
        pr = _bfd_elf_get_property (abfd, p->property.pr_type,
                                    p->property.pr_datasz);
        /* It must be a new property.  */
@@ -324,11 +328,15 @@ _bfd_elf_link_setup_gnu_properties (struct bfd_link_info *info)
        has_properties = TRUE;
 
        /* Ignore GNU properties from ELF objects with different machine
-          code or class.  */
+          code or class.  Also skip objects without a GNU_PROPERTY note
+          section.  */
        if ((elf_machine_code
             == get_elf_backend_data (abfd)->elf_machine_code)
            && (elfclass
-               == get_elf_backend_data (abfd)->s->elfclass))
+               == get_elf_backend_data (abfd)->s->elfclass)
+           && bfd_get_section_by_name (abfd,
+                                       NOTE_GNU_PROPERTY_SECTION_NAME) != NULL
+           )
          {
            /* Keep .note.gnu.property section in FIRST_PBFD.  */
            first_pbfd = abfd;
@@ -370,10 +378,11 @@ _bfd_elf_link_setup_gnu_properties (struct bfd_link_info *info)
 
        if (list != NULL)
          {
-           /* Discard .note.gnu.property section in the rest inputs.  */
+           /* Discard the .note.gnu.property section in this bfd.  */
            sec = bfd_get_section_by_name (abfd,
                                           NOTE_GNU_PROPERTY_SECTION_NAME);
-           sec->output_section = bfd_abs_section_ptr;
+           if (sec != NULL)
+             sec->output_section = bfd_abs_section_ptr;
          }
       }
 
@@ -389,6 +398,7 @@ _bfd_elf_link_setup_gnu_properties (struct bfd_link_info *info)
 
       sec = bfd_get_section_by_name (first_pbfd,
                                     NOTE_GNU_PROPERTY_SECTION_NAME);
+      BFD_ASSERT (sec != NULL);
 
       /* Update stack size in .note.gnu.property with -z stack-size=N
         if N > 0.  */
@@ -489,6 +499,11 @@ _bfd_elf_link_setup_gnu_properties (struct bfd_link_info *info)
 
       /* Cache the section contents for elf_link_input_bfd.  */
       elf_section_data (sec)->this_hdr.contents = contents;
+
+      /* If GNU_PROPERTY_NO_COPY_ON_PROTECTED is set, protected data
+        symbol is defined in the shared object.  */
+      if (elf_has_no_copy_on_protected (first_pbfd))
+       info->extern_protected_data = FALSE;
     }
 
   return first_pbfd;