4106101c44
[AArch64] Workaround for Cortex A53 erratum 843419
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Some early revisions of the Cortex-A53 have an erratum (843419). The
details of the erratum are quite complex and involve dynamic
conditions. For the purposes of the workaround we have simplified the
static conditions to an ADRP in the last two instructions of a 4KByte
page, followed within four instructions by a load/store dependent on
the ADRP.
This patch adds support to conservatively scan for and workaround
Cortex A53 erratum 843419. There are two different workaround
strategies used. The first is to rewrite ADRP instructions which form
part of an erratum sequence with an ADR instruction. In situations
where the ADR provides insufficient offset the dependent load or store
instruction from the sequence is moved to a stub section and branches
are inserted from the original sequence to the relocated instruction
and back again.
Stub section sizes are rounded up to a multiple of 4096 in order to
ensure that the act of inserting work around stubs does not create
more errata sequences.
Workaround stubs are always inserted into the stub section associated
with the input section containing the erratum sequence. This ensures
that the fully relocated form of the veneered load store instruction
is available at the point in time when the stub section is written.
2015-04-01 13:16:38 +01:00
8ef229f32b
[AArch64] Removing unused functions.
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Removing a group of unused functions from the AArch64 BFD backend.
2015-03-04 12:30:34 +00:00
e09ab7ac78
Allow MOVK for R_AARCH64_TLSLE_MOVW_TPREL_G{0,1}NC
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bfd/
PR gas/17843
* elfxx-aarch64.c (_bfd_aarch64_elf_put_addend): Expect
R_AARCH64_TLSLE_MOVW_TPREL_G0_NC and R_AARCH64_TLSLE_MOVW_TPREL_G1_NC
to be used with MOVK rather than MOVZ.
gas/
PR gas/17843
* config/tc-aarch64.c (process_movw_reloc_info): Allow
R_AARCH64_TLSLE_MOVW_TPREL_G0_NC and R_AARCH64_TLSLE_MOVW_TPREL_G1_NC
for MOVK.
gas/testsuite/
PR gas/17843
* gas/aarch64/tls.s, gas/aarch64/tls.d: Add test for
R_AARCH64_TLSLE_MOVW_TPREL_G0/R_AARCH64_TLSLE_MOVW_TPREL_G1_NC
sequence.
ld/testsuite/
PR gas/17843
* ld-aarch64/tlsle.s, ld-aarch64/tlsle.d: New test.
* ld-aarch64/aarch64-elf.exp: Run it.
2015-03-04 09:09:05 +00:00
1ada945d05
[AArch64] Add support for :tlsdesc: and TLSDESC_LD_PREL19
2015-02-26 22:59:23 +00:00
389b8029b6
[AArch64] Add support for :tlsdesc: and TLSDESC_ADR_PREL21
2015-02-26 22:59:16 +00:00
3c12b05436
Add ADR :tlsgd: directive and TLSGD_ADR_PREL21 support.
2015-02-26 22:23:09 +00:00
043bf05a3d
Adding support for TLSIE_LD_GOTTREL_PREL19.
2015-02-26 22:23:09 +00:00
6346d5ca43
Fallout from recent bfd_reloc_outofrange changes
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Commit ec93045bcd21f5da
2015-01-19 19:37:45 +10:30
bab91cce20
[AArch64] Enable overflow check for R_AARCH64_TLSLE_ADD_TPREL_HI12
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bfd/
PR ld/17415
* elfnn-aarch64.c (elfNN_aarch64_howto_table): Mark
R_AARCH64_TLSLE_ADD_TPREL_HI12 as complain_overflow_unsigned.
* elfxx-aarch64.c (_bfd_aarch64_elf_resolve_relocation): Correct the bit
mask.
ld/testsuite/
PR ld/17415
* ld-aarch64/pr17415.s: Source file for new test.
* ld-aarch64/pr17415.d: Expect file for new test.
* ld-aarch64/aarch64-elf.exp: Run the new test.
2015-01-13 11:18:10 +00:00
b90efa5b79
ChangeLog rotatation and copyright year update
2015-01-02 00:53:45 +10:30
f1885d1e59
Fix 17492, ld segfault with --oformat=binary
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PR 17492
* elf32-arm.c (elf32_arm_add_symbol_hook): Only set has_gnu_symbols
on ELF output bfd.
* elf32-i386.c (elf_i386_add_symbol_hook): Likewise.
* elf32-m68k.c (elf_m68k_add_symbol_hook): Likewise.
* elf32-ppc.c (ppc_elf_add_symbol_hook): Likewise.
* elf32-sparc.c (elf32_sparc_add_symbol_hook): Likewise.
* elf64-ppc.c (ppc64_elf_add_symbol_hook): Likewise.
* elf64-sparc.c (elf64_sparc_add_symbol_hook): Likewise.
* elf64-x86-64.c (elf_x86_64_add_symbol_hook): Likewise.
* elfxx-aarch64.c (_bfd_aarch64_elf_add_symbol_hook): Likewise.
* elf-s390-common.c (elf_s390_add_symbol_hook): Likewise. Handle
STB_GNU_UNIQUE too.
2014-10-16 21:18:16 +10:30
d0ae9fbda7
Add support for reading Aarch64 core dumps.
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* elfxx-aarch64.c (stdarg.h): Include.
(string.h): Include.
(_bfd_aarch64_elf_grok_prstatus): Updated.
(_bfd_aarch64_elf_grok_psinfo): New function.
(_bfd_aarch64_elf_write_core_note): New function.
* elfxx-aarch64.h (elf_backend_grok_psinfo): Define.
(elf_backend_write_core_note): Define.
2014-06-13 17:07:21 +01:00
4b95cf5c0c
Update copyright years
2014-03-05 22:16:15 +10:30
3b570dee4f
* elfxx-aarch64.c (_bfd_aarch64_elf_grok_prstatus): Fix hard-coded
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size of struct elf_prstatus.
2013-11-11 10:26:41 +00:00
caed712042
[AArch64, ILP32] 4/6 Split elfnn-aarch64.c to elfxx-aarch64.c
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bfd/
* Makefile.am (BFD64_BACKENDS): Add elfxx-aarch64.c.
(BFD64_BACKENDS_CFILES): Add elfxx-aarch64.lo.
* Makefile.in: Re-generated.
* configure.in (bfd_elf64_bigaarch64_vec): Add elfxx-aarch64.lo.
(bfd_elf64_littleaarch64_vec): Likewise.
(bfd_elf32_bigaarch64_vec): Likewise.
(bfd_elf32_littleaarch64_vec): Likewise.
* configure: Re-generated.
* elfxx-aarch64.c: New file; split from elf64-aarch64.c.
* elfxx-aarch64.h: New file.
* elfnn-aarch64.c: Include "elfxx-aarch64.h"; move the following
stuff to elfxx-aarch64.c.
(bfd_elf_aarch64_put_addend): Removed.
(PG_OFFSET, PG): Likewise.
(elfNN_aarch64_small_plt0_entry): Support ELF32.
(elfNN_aarch64_tlsdesc_small_plt_entry): Likewise.
(elf64_aarch64_grok_prstatus): Removed.
(elf_backend_grok_prstatus): Removed.
(insn32): Likewise.
(aarch64_unsigned_overflow): Likewise.
(aarch64_signed_overflow): Likewise.
(aarch64_resolve_relocation): Likewise.
(MASK): Likewise.
(decode_branch_ofs_26): Likewise.
(decode_cond_branch_ofs_19): Likewise.
(decode_ld_lit_ofs_19): Likewise.
(decode_tst_branch_ofs_14): Likewise.
(decode_movw_imm): Likewise.
(decode_adr_imm): Likewise.
(decode_add_imm): Likewise.
(reencode_branch_ofs_26): Likewise.
(reencode_cond_branch_ofs_19): Likewise.
(reencode_ld_lit_ofs_19): Likewise.
(reencode_tst_branch_ofs_14): Likewise.
(reencode_movw_imm): Likewise.
(reencode_adr_imm): Likewise.
(reencode_ldst_pos_imm): Likewise.
(reencode_add_imm): Likewise.
(reencode_movzn_to_movz): Likewise.
(reencode_movzn_to_movn): Likewise.
(aarch64_relocate): Update to call the new function names in
elfxx-aarch64.c.
(aarch64_calculate_got_entry_vma): Likewise.
(elfNN_aarch64_final_link_relocate): Likewise.
(elf64_aarch64_update_plt_entry): Likewise; change the type of the
parameter 'r_type' to bfd_reloc_code_real_type; rename to ...
(elf_aarch64_update_plt_entry): ... this.
(elfNN_aarch64_create_small_pltn_entry): Update.
(elfNN_aarch64_init_small_plt0_entry): Remove plt_got_base; add
bfd_vma plt_got_2nd_ent; update to call elf_aarch64_update_plt_entry.
(elfNN_aarch64_finish_dynamic_sections): Add plt_entry; update to
call elf_aarch64_update_plt_entry.
2013-06-26 10:49:29 +00:00
Marcus Shawcroft
Richard Sandiford
Alan Modra
Jiong Wang
Omair Javaid
Yufeng Zhang