+2016-04-11 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/19939
+ * elf-bfd.h (_bfd_elf_allocate_ifunc_dyn_relocs): Add a pointer
+ to bfd_boolean.
+ * elf-ifunc.c (_bfd_elf_allocate_ifunc_dyn_relocs): Updated.
+ Set *readonly_dynrelocs_against_ifunc_p to TRUE if dynamic reloc
+ applies to read-only section.
+ * elf32-i386.c (elf_i386_link_hash_table): Add
+ readonly_dynrelocs_against_ifunc.
+ (elf_i386_allocate_dynrelocs): Updated.
+ (elf_i386_size_dynamic_sections): Issue an error for read-only
+ segment with dynamic IFUNC relocations only if
+ readonly_dynrelocs_against_ifunc is TRUE.
+ * elf64-x86-64.c (elf_x86_64_link_hash_table): Add
+ readonly_dynrelocs_against_ifunc.
+ (elf_x86_64_allocate_dynrelocs): Updated.
+ (elf_x86_64_size_dynamic_sections): Issue an error for read-only
+ segment with dynamic IFUNC relocations only if
+ readonly_dynrelocs_against_ifunc is TRUE.
+ * elfnn-aarch64.c (elfNN_aarch64_allocate_ifunc_dynrelocs):
+ Updated.
+
2016-04-06 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (elf32_arm_size_stubs): Move error_ret_free_local to be
(bfd *, struct bfd_link_info *);
extern bfd_boolean _bfd_elf_allocate_ifunc_dyn_relocs
(struct bfd_link_info *, struct elf_link_hash_entry *,
- struct elf_dyn_relocs **, unsigned int, unsigned int, unsigned int);
+ struct elf_dyn_relocs **, bfd_boolean *, unsigned int,
+ unsigned int, unsigned int);
extern long _bfd_elf_ifunc_get_synthetic_symtab
(bfd *, long, asymbol **, long, asymbol **, asymbol **, asection *,
bfd_vma *(*) (bfd *, asymbol **, asection *, asection *));
_bfd_elf_allocate_ifunc_dyn_relocs (struct bfd_link_info *info,
struct elf_link_hash_entry *h,
struct elf_dyn_relocs **head,
+ bfd_boolean *readonly_dynrelocs_against_ifunc_p,
unsigned int plt_entry_size,
unsigned int plt_header_size,
unsigned int got_entry_size)
unsigned int sizeof_reloc;
const struct elf_backend_data *bed;
struct elf_link_hash_table *htab;
+ bfd_boolean readonly_dynrelocs_against_ifunc;
/* When a shared library references a STT_GNU_IFUNC symbol defined
in executable, the address of the resolved function may be used.
|| !h->non_got_ref)
*head = NULL;
+ readonly_dynrelocs_against_ifunc = FALSE;
+
/* Finally, allocate space. */
p = *head;
if (p != NULL)
bfd_size_type count = 0;
do
{
+ if (!readonly_dynrelocs_against_ifunc)
+ {
+ asection *s = p->sec->output_section;
+ if (s != NULL && (s->flags & SEC_READONLY) != 0)
+ readonly_dynrelocs_against_ifunc = TRUE;
+ }
count += p->count;
p = p->next;
}
htab->irelifunc->size += count * sizeof_reloc;
}
+ if (readonly_dynrelocs_against_ifunc_p)
+ *readonly_dynrelocs_against_ifunc_p = readonly_dynrelocs_against_ifunc;
+
/* For STT_GNU_IFUNC symbol, .got.plt has the real function address
and .got has the PLT entry adddress. We will load the GOT entry
with the PLT entry in finish_dynamic_symbol if it is used. For
/* The index of the next unused R_386_IRELATIVE slot in .rel.plt. */
bfd_vma next_irelative_index;
+
+ /* TRUE if there are dynamic relocs against IFUNC symbols that apply
+ to read-only sections. */
+ bfd_boolean readonly_dynrelocs_against_ifunc;
};
/* Get the i386 ELF linker hash table from a link_info structure. */
if (h->type == STT_GNU_IFUNC
&& h->def_regular)
return _bfd_elf_allocate_ifunc_dyn_relocs (info, h, &eh->dyn_relocs,
- plt_entry_size,
+ &htab->readonly_dynrelocs_against_ifunc,
+ plt_entry_size,
plt_entry_size, 4);
/* Don't create the PLT entry if there are only function pointer
relocations which can be resolved at run-time. */
if ((info->flags & DF_TEXTREL) != 0)
{
- if ((elf_tdata (output_bfd)->has_gnu_symbols
- & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
+ if (htab->readonly_dynrelocs_against_ifunc)
{
info->callbacks->einfo
(_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
bfd_vma next_jump_slot_index;
/* The index of the next R_X86_64_IRELATIVE entry in .rela.plt. */
bfd_vma next_irelative_index;
+
+ /* TRUE if there are dynamic relocs against IFUNC symbols that apply
+ to read-only sections. */
+ bfd_boolean readonly_dynrelocs_against_ifunc;
};
/* Get the x86-64 ELF linker hash table from a link_info structure. */
{
if (_bfd_elf_allocate_ifunc_dyn_relocs (info, h,
&eh->dyn_relocs,
+ &htab->readonly_dynrelocs_against_ifunc,
plt_entry_size,
plt_entry_size,
GOT_ENTRY_SIZE))
if ((info->flags & DF_TEXTREL) != 0)
{
- if ((elf_tdata (output_bfd)->has_gnu_symbols
- & elf_gnu_symbol_ifunc) == elf_gnu_symbol_ifunc)
+ if (htab->readonly_dynrelocs_against_ifunc)
{
info->callbacks->einfo
(_("%P%X: read-only segment has dynamic IFUNC relocations; recompile with -fPIC\n"));
&& h->def_regular)
return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
&eh->dyn_relocs,
+ NULL,
htab->plt_entry_size,
htab->plt_header_size,
GOT_ENTRY_SIZE);
+2016-04-11 H.J. Lu <hongjiu.lu@intel.com>
+
+ PR ld/19939
+ * testsuite/ld-i386/i386.exp: Run PR ld/19939 tests.
+ * testsuite/ld-x86-64/x86-64.exp: Likewise.
+ * testsuite/ld-i386/pr19939.s: New file.
+ * testsuite/ld-i386/pr19939a.d: Likewise.
+ * testsuite/ld-i386/pr19939b.d: Likewise.
+ * testsuite/ld-x86-64/pr19939.s: Likewise.
+ * testsuite/ld-x86-64/pr19939a.d: Likewise.
+ * testsuite/ld-x86-64/pr19939b.d: Likewise.
+
2016-04-09 Oleg Endo <olegendo@gcc.gnu.org>
* emulparams/shelf.sh: Set stack area to 0x3FFFFF00.
run_dump_test "pr17935-2"
run_dump_test "pr18801"
run_dump_test "pr18815"
+run_dump_test "pr19939a"
+run_dump_test "pr19939b"
proc undefined_weak {cflags ldflags} {
set testname "Undefined weak symbol"
--- /dev/null
+ .text
+selector:
+ movl foo@GOT(%eax), %eax
+ mov $bar, %ebx
+ ret
+ .type selector, %gnu_indirect_function
+ .globl bar
+bar:
+ jmp selector@PLT
--- /dev/null
+#source: pr19939.s
+#as: --32
+#ld: -melf_i386 -shared -z defs
+#error: undefined reference to `foo'
--- /dev/null
+#source: pr19939.s
+#as: --32
+#ld: -melf_i386 -shared
+#readelf: -d --wide
+
+#...
+.*\(TEXTREL\).*
+#pass
--- /dev/null
+ .text
+selector:
+ movq foo@GOTPCREL(%rip), %rax
+ movabs $bar, %rbx
+ ret
+ .type selector, %gnu_indirect_function
+ .globl bar
+bar:
+ jmp selector@PLT
--- /dev/null
+#source: pr19939.s
+#as: --64
+#ld: -melf_x86_64 -shared -z defs
+#error: undefined reference to `foo'
--- /dev/null
+#source: pr19939.s
+#as: --64
+#ld: -melf_x86_64 -shared
+#readelf: -d --wide
+
+#...
+.*\(TEXTREL\).*
+#pass
run_dump_test "pr19609-7b"
run_dump_test "pr19609-7c"
run_dump_test "pr19609-7d"
+run_dump_test "pr19939a"
+run_dump_test "pr19939b"
proc undefined_weak {cflags ldflags} {
set testname "Undefined weak symbol"
projects / platform / upstream / binutils.git / commitdiff