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[AArch64] Create .got section if _GLOBAL_OFFSET_TABLE_ referenced

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2016-03-07  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * elfnn-aarch64.c (elfNN_aarch64_check_relocs): Always create .got section
  if the symbol "_GLOBAL_OFFSET_TABLE_" referenced.

ld/
  * testsuite/ld-aarch64/implicit_got_section_1.s: New test source file.
  * testsuite/ld-aarch64/implicit_got_section_1.d: New test expected result.
  * testsuite/ld-aarch64/aarch64-elf.exp: Run new test.
This commit is contained in:
Jiong Wang 2016-03-07 15:40:50 +00:00
parent f86f586366
commit 18f822a08f
6 changed files with 37 additions and 0 deletions
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5
bfd/ChangeLog
View file

@ -1,3 +1,8 @@
2016-03-07 Jiong Wang <jiong.wang@arm.com>
* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Always create .got
section if the symbol "_GLOBAL_OFFSET_TABLE_" is referenced.
2016-03-04 H.J. Lu <hongjiu.lu@intel.com>
PR ld/19579

16
bfd/elfnn-aarch64.c
View file

@ -7080,6 +7080,22 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
if (h != NULL)
{
/* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
This shows up in particular in an R_AARCH64_PREL64 in large model
when calculating the pc-relative address to .got section which is
used to initialize the gp register. */
if (h->root.root.string
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
{
if (htab->root.dynobj == NULL)
htab->root.dynobj = abfd;
if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
return FALSE;
BFD_ASSERT (h == htab->root.hgot);
}
/* Create the ifunc sections for static executables. If we
never see an indirect function symbol nor we are building
a static executable, those sections will be empty and

7
ld/ChangeLog
View file

@ -1,3 +1,10 @@
2016-03-07 Jiong Wang <jiong.wang@arm.com>
* testsuite/ld-aarch64/implicit_got_section_1.s: New test source file.
* testsuite/ld-aarch64/implicit_got_section_1.d: New test expected
result.
* testsuite/ld-aarch64/aarch64-elf.exp: Run new test.
2016-03-06 H.J. Lu <hongjiu.lu@intel.com>
* testsuite/ld-i386/i386.exp: Link tmpdir/copyreloc-main.o

1
ld/testsuite/ld-aarch64/aarch64-elf.exp
View file

@ -229,6 +229,7 @@ run_dump_test "gc-tls-relocs"
run_dump_test "gc-plt-relocs"
run_dump_test "gc-relocs-257-dyn"
run_dump_test "gc-relocs-257"
run_dump_test "implicit_got_section_1"
run_dump_test "pr17415"
run_dump_test "tprel_g2_overflow"
run_dump_test "tprel_add_lo12_overflow"

5
ld/testsuite/ld-aarch64/implicit_got_section_1.d Normal file
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@ -0,0 +1,5 @@
#source: implicit_got_section_1.s
#ld: -e0
#readelf: -r
There are no relocations in this file.

3
ld/testsuite/ld-aarch64/implicit_got_section_1.s Normal file
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@ -0,0 +1,3 @@
.text
test:
.word _GLOBAL_OFFSET_TABLE_ - .