[AArch64] BFD support BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14

This patch add BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14 relocation
supoprt in bfd linker.

2015-06-01  Jiong Wang  <jiong.wang@arm.com>

bfd/
  * elfnn-aarch64.c (aarch64_reloc_got_type): Support
  BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14.
  (elfNN_aarch64_final_link_relocate): Ditto.
  (elfNN_aarch64_gc_swap_hook): Ditto.
  (elfNN_aarch64_check_relocs): Ditto.
  * elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Ditto.

ld/testsuite/
  * ld-aarch64/emit-relocs-28.s: New test file.
  * ld-aarch64/emit-relocs-28.d: Ditto.
  * ld-aarch64/aarch64-elf.exp: Run new test.
This commit is contained in:
Jiong Wang 2015-06-01 15:45:25 +01:00
parent 3d715ce420
commit 7018c0308a
7 changed files with 54 additions and 3 deletions

View File

@ -1,3 +1,12 @@
2015-06-01 Jiong Wang <jiong.wang@arm.com>
* elfnn-aarch64.c (aarch64_reloc_got_type): Support
BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14.
(elfNN_aarch64_final_link_relocate): Ditto.
(elfNN_aarch64_gc_swap_hook): Ditto.
(elfNN_aarch64_check_relocs): Ditto.
* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Ditto.
2015-06-01 Jiong Wang <jiong.wang@arm.com>
* reloc.c (BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14): New entry.

View File

@ -4067,6 +4067,7 @@ aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
{
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
@ -4621,6 +4622,7 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
howto, value);
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
@ -4682,7 +4684,8 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
value = aarch64_calculate_got_entry_vma (h, globals, info,
value, output_bfd,
unresolved_reloc_p);
if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15)
if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
|| bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
addend = (globals->root.sgot->output_section->vma
+ globals->root.sgot->output_offset);
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
@ -4890,6 +4893,7 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
@ -4902,7 +4906,8 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
value = aarch64_calculate_got_entry_vma (h, globals, info, value,
output_bfd,
unresolved_reloc_p);
if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15)
if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
|| bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
addend = (globals->root.sgot->output_section->vma
+ globals->root.sgot->output_offset);
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
@ -4960,7 +4965,8 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
the direct data access into indirect data access through GOT. */
value = got_entry_addr;
if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15)
if (bfd_r_type == BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15
|| bfd_r_type == BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14)
addend = base_got->output_section->vma + base_got->output_offset;
value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
@ -5959,6 +5965,7 @@ elfNN_aarch64_gc_sweep_hook (bfd *abfd,
{
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
@ -6317,6 +6324,7 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
case BFD_RELOC_AARCH64_CALL26:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_JUMP26:
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
@ -6429,6 +6437,7 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
there are no dangling GOT_PAGE relocs. */
case BFD_RELOC_AARCH64_ADR_GOT_PAGE:
case BFD_RELOC_AARCH64_GOT_LD_PREL19:
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:

View File

@ -257,6 +257,7 @@ _bfd_aarch64_elf_put_addend (bfd *abfd,
contents = reencode_add_imm (contents, addend);
break;
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
@ -414,6 +415,7 @@ _bfd_aarch64_elf_resolve_relocation (bfd_reloc_code_real_type r_type,
value = PG (value + addend) - PG (place);
break;
case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
/* Caller must make sure addend is the base address of .got section. */
value = value - PG (addend);

View File

@ -1,3 +1,9 @@
2015-06-01 Jiong Wang <jiong.wang@arm.com>
* ld-aarch64/emit-relocs-28.s: New test file.
* ld-aarch64/emit-relocs-28.d: Ditto.
* ld-aarch64/aarch64-elf.exp: Run new test.
2015-06-01 Jiong Wang <jiong.wang@arm.com>
* ld-aarch64/tprel_add_lo12_overflow.s: New testcase.

View File

@ -50,6 +50,7 @@ run_dump_test "erratum843419"
# Relocation Tests
run_dump_test "weak-undefined"
run_dump_test "emit-relocs-28"
run_dump_test "emit-relocs-257"
run_dump_test "emit-relocs-257-be"
# 258 is tested in 257

View File

@ -0,0 +1,19 @@
#source: emit-relocs-28.s
#as: -mabi=ilp32
#ld: -m aarch64linux32 --defsym globala=0x11000 --defsym globalb=0x45000 --defsym globalc=0x1234 -e0 --emit-relocs
#objdump: -dr
.*: +file format .*
Disassembly of section .text:
00400074 <\.text>:
400074: 90000082 adrp x2, 410000 <globalb\+0x3cb000>
400074: R_AARCH64_P32_ADR_PREL_PG_HI21 _GLOBAL_OFFSET_TABLE_
400078: f9408c40 ldr x0, \[x2,#280\]
400078: R_AARCH64_P32_LD32_GOTPAGE_LO14 globala
40007c: f9409040 ldr x0, \[x2,#288\]
40007c: R_AARCH64_P32_LD32_GOTPAGE_LO14 globalb
400080: f9408840 ldr x0, \[x2,#272\]
400080: R_AARCH64_P32_LD32_GOTPAGE_LO14 globalc

View File

@ -0,0 +1,5 @@
.text
adrp x2, _GLOBAL_OFFSET_TABLE_
ldr x0, [x2, #:gotpage_lo14:globala]
ldr x0, [x2, #:gotpage_lo14:globalb]
ldr x0, [x2, #:gotpage_lo14:globalc]