/* 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.
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);
}
{
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;
}
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;
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;
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;
}
_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:
}
}
+/* Get GNU property section size. */
+
+static bfd_size_type
+elf_get_gnu_property_section_size (elf_property_list *list,
+ unsigned int align_size)
+{
+ bfd_size_type size;
+ unsigned int descsz;
+
+ /* Compute the output section size. */
+ descsz = offsetof (Elf_External_Note, name[sizeof "GNU"]);
+ descsz = (descsz + 3) & -(unsigned int) 4;
+ size = descsz;
+ for (; list != NULL; list = list->next)
+ {
+ /* There are 4 byte type + 4 byte datasz for each property. */
+ unsigned int datasz;
+ if (list->property.pr_type == GNU_PROPERTY_STACK_SIZE)
+ datasz = align_size;
+ else
+ datasz = list->property.pr_datasz;
+ size += 4 + 4 + datasz;
+ /* Align each property. */
+ size = (size + (align_size - 1)) & ~(align_size - 1);
+ }
+
+ return size;
+}
+
+/* Write GNU properties. */
+
+static void
+elf_write_gnu_properties (bfd *abfd, bfd_byte *contents,
+ elf_property_list *list, unsigned int size,
+ unsigned int align_size)
+{
+ unsigned int descsz;
+ unsigned int datasz;
+ Elf_External_Note *e_note;
+
+ e_note = (Elf_External_Note *) contents;
+ descsz = offsetof (Elf_External_Note, name[sizeof "GNU"]);
+ descsz = (descsz + 3) & -(unsigned int) 4;
+ bfd_h_put_32 (abfd, sizeof "GNU", &e_note->namesz);
+ bfd_h_put_32 (abfd, size - descsz, &e_note->descsz);
+ bfd_h_put_32 (abfd, NT_GNU_PROPERTY_TYPE_0, &e_note->type);
+ memcpy (e_note->name, "GNU", sizeof "GNU");
+
+ size = descsz;
+ for (; list != NULL; list = list->next)
+ {
+ /* There are 4 byte type + 4 byte datasz for each property. */
+ if (list->property.pr_type == GNU_PROPERTY_STACK_SIZE)
+ datasz = align_size;
+ else
+ datasz = list->property.pr_datasz;
+ bfd_h_put_32 (abfd, list->property.pr_type, contents + size);
+ bfd_h_put_32 (abfd, datasz, contents + size + 4);
+ size += 4 + 4;
+
+ /* Write out property value. */
+ switch (list->property.pr_kind)
+ {
+ case property_number:
+ switch (datasz)
+ {
+ default:
+ /* Never should happen. */
+ abort ();
+
+ case 0:
+ break;
+
+ case 4:
+ bfd_h_put_32 (abfd, list->property.u.number,
+ contents + size);
+ break;
+
+ case 8:
+ bfd_h_put_64 (abfd, list->property.u.number,
+ contents + size);
+ break;
+ }
+ break;
+
+ default:
+ /* Never should happen. */
+ abort ();
+ }
+ size += datasz;
+
+ /* Align each property. */
+ size = (size + (align_size - 1)) & ~ (align_size - 1);
+ }
+}
+
/* Set up GNU properties. Return the first relocatable ELF input with
GNU properties if found. Otherwise, return NULL. */
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;
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;
}
}
always sorted by type even if input GNU properties aren't sorted. */
if (first_pbfd != NULL)
{
- unsigned int size;
- unsigned int descsz;
+ bfd_size_type size;
bfd_byte *contents;
- Elf_External_Note *e_note;
- unsigned int align_size = bed->s->elfclass == ELFCLASS64 ? 8 : 4;
+ unsigned int align_size = elfclass == ELFCLASS64 ? 8 : 4;
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. */
return NULL;
}
- /* Compute the section size. */
- descsz = offsetof (Elf_External_Note, name[sizeof "GNU"]);
- descsz = (descsz + 3) & -(unsigned int) 4;
- size = descsz;
- for (list = elf_properties (first_pbfd);
- list != NULL;
- list = list->next)
+ /* Fix up GNU properties. */
+ if (bed->fixup_gnu_properties)
+ bed->fixup_gnu_properties (info, &elf_properties (first_pbfd));
+
+ if (elf_properties (first_pbfd) == NULL)
{
- /* There are 4 byte type + 4 byte datasz for each property. */
- size += 4 + 4 + list->property.pr_datasz;
- /* Align each property. */
- size = (size + (align_size - 1)) & ~(align_size - 1);
+ /* Discard .note.gnu.property section if all properties have
+ been removed. */
+ sec->output_section = bfd_abs_section_ptr;
+ return NULL;
}
+ /* Compute the section size. */
+ list = elf_properties (first_pbfd);
+ size = elf_get_gnu_property_section_size (list, align_size);
+
/* Update .note.gnu.property section now. */
sec->size = size;
contents = (bfd_byte *) bfd_zalloc (first_pbfd, size);
- e_note = (Elf_External_Note *) contents;
- bfd_h_put_32 (first_pbfd, sizeof "GNU", &e_note->namesz);
- bfd_h_put_32 (first_pbfd, size - descsz, &e_note->descsz);
- bfd_h_put_32 (first_pbfd, NT_GNU_PROPERTY_TYPE_0, &e_note->type);
- memcpy (e_note->name, "GNU", sizeof "GNU");
-
- size = descsz;
- for (list = elf_properties (first_pbfd);
- list != NULL;
- list = list->next)
- {
- /* There are 4 byte type + 4 byte datasz for each property. */
- bfd_h_put_32 (first_pbfd, list->property.pr_type,
- contents + size);
- bfd_h_put_32 (first_pbfd, list->property.pr_datasz,
- contents + size + 4);
- size += 4 + 4;
-
- /* Write out property value. */
- switch (list->property.pr_kind)
- {
- case property_number:
- switch (list->property.pr_datasz)
- {
- default:
- /* Never should happen. */
- abort ();
-
- case 0:
- break;
-
- case 4:
- bfd_h_put_32 (first_pbfd, list->property.u.number,
- contents + size);
- break;
-
- case 8:
- bfd_h_put_64 (first_pbfd, list->property.u.number,
- contents + size);
- break;
- }
- break;
-
- default:
- /* Never should happen. */
- abort ();
- }
- size += list->property.pr_datasz;
-
- /* Align each property. */
- size = (size + (align_size - 1)) & ~ (align_size - 1);
- }
+ elf_write_gnu_properties (first_pbfd, contents, list, size,
+ align_size);
/* Cache the section contents for elf_link_input_bfd. */
elf_section_data (sec)->this_hdr.contents = contents;
return first_pbfd;
}
+
+/* Convert GNU property size. */
+
+bfd_size_type
+_bfd_elf_convert_gnu_property_size (bfd *ibfd, bfd *obfd)
+{
+ unsigned int align_size;
+ const struct elf_backend_data *bed;
+ elf_property_list *list = elf_properties (ibfd);
+
+ bed = get_elf_backend_data (obfd);
+ align_size = bed->s->elfclass == ELFCLASS64 ? 8 : 4;
+
+ /* Get the output .note.gnu.property section size. */
+ return elf_get_gnu_property_section_size (list, align_size);
+}
+
+/* Convert GNU properties. */
+
+bfd_boolean
+_bfd_elf_convert_gnu_properties (bfd *ibfd, asection *isec,
+ bfd *obfd, bfd_byte **ptr,
+ bfd_size_type *ptr_size)
+{
+ unsigned int size;
+ bfd_byte *contents;
+ unsigned int align_shift;
+ const struct elf_backend_data *bed;
+ elf_property_list *list = elf_properties (ibfd);
+
+ bed = get_elf_backend_data (obfd);
+ align_shift = bed->s->elfclass == ELFCLASS64 ? 3 : 2;
+
+ /* Get the output .note.gnu.property section size. */
+ size = bfd_get_section_size (isec->output_section);
+
+ /* Update the output .note.gnu.property section alignment. */
+ bfd_set_section_alignment (obfd, isec->output_section, align_shift);
+
+ if (size > bfd_get_section_size (isec))
+ {
+ contents = (bfd_byte *) bfd_malloc (size);
+ free (*ptr);
+ *ptr = contents;
+ }
+ else
+ contents = *ptr;
+
+ *ptr_size = size;
+
+ /* Generate the output .note.gnu.property section. */
+ elf_write_gnu_properties (ibfd, contents, list, size, 1 << align_shift);
+
+ return TRUE;
+}
projects / deliverable / binutils-gdb.git / blobdiff