Increase the maximum page size to 64kB and align the TEXT_START_ADDR
to a 64kB boundary. This brings AArch32 in line with AArch64 and
improves compatability under certain conditions.
bfd/ChangeLog:
2014-07-08 Will Newton <will.newton@linaro.org>
* elf32-arm.c (ELF_MAXPAGESIZE): Increase the default
value to 64kB and remove custom setting for NaCl.
ld/ChangeLog:
2014-07-08 Will Newton <will.newton@linaro.org>
* emulparams/armelf_linux.sh (TEXT_START_ADDR): Increase
alignment to 64kB boundary.
ld/testsuite/ChangeLog:
2014-07-08 Will Newton <will.newton@linaro.org>
* ld-arm/arm-lib.ld: Increase MAXPAGESIZE value to
match bfd.
* ld-arm/cortex-a8-fix-bl-rel-plt.d: Update offsets to
take into account increased segment alignment.
* ld-arm/ifunc-gdesc.r: Likewise.
* ld-arm/tls-lib.d: Likewise.
other architectures when we emit IE relocs in a shared library.
* elf32-arm.c (elf32_arm_check_relocs): Set DF_STATIC_TLS when
emitting initial-exec relocs when not linking an executable.
Combining TLS descriptors and GNU indirect functions in the same
object could lead to assertions or multiple dynamic relocations
for the same GOT slot. Fix the bookkeeping so this doesn't happen.
This allows building and make checking glibc with -mtls-dialect=gnu2.
bfd/ChangeLog:
2014-06-16 Will Newton <will.newton@linaro.org>
* elf32-arm.c (elf32_arm_allocate_plt_entry): Increment
htab->next_tls_desc_index in the non-IPLT case.
Calculate GOT offset correctly for the non-IPLT case.
(allocate_dynrelocs_for_symbol): Don't increment
htab->next_tls_desc_index here.
ld/testsuite/ChangeLog:
2014-06-16 Will Newton <will.newton@linaro.org>
* ld-arm/arm-elf.exp: Add ifunc-gdesc test.
* ld-arm/ifunc-gdesc.r: New file.
* ld-arm/ifunc-gdesc.s: Likewise.
* ld-arm/ifunc-gdesc.ver: Likewise.
Unless pointer_equality_needed is set then set st_value to be zero
for undefined symbols.
bfd/ChangeLog:
2014-03-20 Will Newton <will.newton@linaro.org>
PR ld/16715
* elf32-arm.c (elf32_arm_check_relocs): Set
pointer_equality_needed for absolute references within
executable links.
(elf32_arm_finish_dynamic_symbol): Set st_value to zero
unless pointer_equality_needed is set.
ld/testsuite/ChangeLog:
2014-03-20 Will Newton <will.newton@linaro.org>
* ld-arm/ifunc-14.rd: Update symbol values.
an ARM ELF binary into an AARCH64 ELF executable.
PR ld/16671
* elf32-arm.c (elf32_arm_add_symbol_hook): Check for ARM format
before testing for vxworks.
using Thumb2 instructions for those cores which do not support the ARM ISA.
* elf32-arm.c (elf32_thumb2_plt0_entry): New array.
(elf32_thumb2_plt_entry): New array.
(elf32_arm_create_dynamic_sections): Set PLT entry sizes when
using thumb2 based PLT.
(elf32_arm_populate_plt_entry): Handle generating Thumb2 based PLT
entries.
(elf32_arm_final_link_relocate): Do not bias jumps to Thumb based
PLT entries.
(elf32_arm_finish_dynamic_sections): Handle creation of Thumb2
based PLT 0-entry.
(elf32_arm_output_plt_map_1): Handle creation of local symbols for
Thumb2 based PLT 0-entry.
(elf32_arm_output_arch_local_syms): Handle creation of local
symbols for Thumb2 based PLT entries.
Enabled via the use of a new linker command line option: --long-plt.
* bfd-in.h: Add export of bfd_elf32_arm_use_long_plt.
* bfd-in2.h: Regenerate.
* elf32-arm.c (elf32_arm_plt_entry_long): New array.
(elf32_arm_link_hash_table_create): Set plt_entry_size to 16 if
using long PLT entries.
(bfd_elf32_arm_use_long_plt): New function.
(elf32_arm_populate_plt_entry): Add support for long PLT entries.
* emultempl/armelf.em (OPTION_LONG_PLT): Define.
(PARSE_AND_LIST_LONGOPTS): Add long-plt.
(PARSE_AND_LIST_OPTIONS): Likewise.
(PARSE_AND_LIST_ARGS_CASES): Handle long-plt.
* ld.texinfo: Document --long-plt.
* ld-arm/long-plt-format.s: New test case.
* ld-arm/long-plt-format.d: Expected disassembly.
* ld-arm/arm-elf.exp: Run the new test.
* elf32-arm.c (elf32_arm_populate_plt_entry): Return a boolean
value, TRUE for success, FALSE for failure.
Fail if attempting to create a PLT entry for a thumb only target.
(elf32_arm_final_link_relocate): Check result of calling
elf32_arm_populate_plt_entry.
(elf32_arm_finish_dynamic_symbol): Likewise.
* elf-nacl.c (nacl_modify_segment_map): Fix logic reordering the
elf_segment_map list. If an executable segment is page-aligned
but does not end with a full page, then append a fake section into
the segment map entry that pads out the page.
(nacl_final_write_processing): New function. Write the code fill
laid out in nacl_modify_segment_map.
* elf-nacl.h: Declare it.
* elf32-arm.c (elf32_arm_nacl_final_write_processing): New function.
(elf_backend_final_write_processing): Define it for NaCl backend.
* elf32-i386.c (elf_backend_final_write_processing): Likewise.
* elf64-x86-64.c (elf_backend_final_write_processing): Likewise.
* elf-nacl.c (segment_eligible_for_headers): Rename MAXPAGESIZE
parameter to MINPAGESIZE.
(nacl_modify_segment_map): Use minpagesize instead of maxpagesize.
* elf32-arm.c (ELF_MINPAGESIZE, ELF_COMMONPAGESIZE): Set to
0x10000 for NaCl targets.
ld/testsuite/
* ld-x86-64/ilp32-4-nacl.d: Loosen .shstrtab line regexp to match
any file offset.
* ld-x86-64/tlsbin-nacl.rd: Update expected code segment PT_LOAD.
* ld-x86-64/tlsbindesc-nacl.rd: Likewise.
* ld-scripts/rgn-at3.d: XFAIL for *-*-nacl* targets.
* ld-scripts/rgn-over8-ok.d: Likewise.
* elf32-arm.c (elf32_arm_final_link_relocate): Use origin of output
segment containing the relocating symbol instead of assuming 0 for
sb group relocations.
* ld-arm/group-relocs-ldr-bad.s: Redefine bar into foo section
beyond 16 bit offset width.
* ld-arm/group-relocs-ldrs-bad.s: Likewise.
* ld-arm/group-relocs-ldr-bad.d: Adjust expected result.
* ld-arm/group-relocs-ldrs-bad.d: Likewise.
* ld-arm/group-relocs.s: Add comments. Move symbols used for sb
group relocations into .data section. Drop section zero. Use pc/r0
as base register when pc/sb group relocations are used.
* ld-arm/group-relocs.d: Adjust expected result.
* ld-arm/group-relocs-alu-bad-2.d: New test for sb group relocation.
* ld-arm/group-relocs-ldc-bad-2.d: Likewise.
* ld-arm/group-relocs-ldr-bad-2.d: New test for pc group relocation.
* ld-arm/group-relocs-ldrs-bad-2.d: Likewise.
* ld-arm/unresolved-2.d: Add sb relocation failure test.
* ld-arm/group-relocs-alu-bad-2.s: New test source.
* ld-arm/group-relocs-ldr-bad-2.s: Likewise.
* ld-arm/group-relocs-ldrs-bad-2.s: Likewise.
* ld-arm/group-relocs-ldc-bad-2.s: Likewise.
* ld-arm/unresolved-2.s: Likewise.
* ld-arm/arm-elf.exp: For group-relocs, drop section zero start
definition. Run the new tests.
thumb only targets.
(elf32_arm_final_link_relocate): Likewise.
* ld-arm/thumb-b-lks-sym.d: Updated to be more flexible.
* ld-arm/thumb-bl-lks-sym.d: Likewise.
(elf32_arm_stub_long_branch_arm_nacl_pic): New variable.
(arm_build_one_stub): Increase MAXRELOCS to 3.
(arm_type_of_stub): Use them if GLOBALS->nacl_p.
(struct elf32_arm_link_hash_table): Give add_stub_section member's
pointee type a third argument.
(elf32_arm_create_or_find_stub_sec): Update caller.
(elf32_arm_size_stubs): Update argument type.
* bfd-in.h (elf32_arm_size_stubs): Update decl.
* bfd-in2.h: Regenerate.
* libbfd.h: Regenerate.
* emultempl/armelf.em (elf32_arm_add_stub_section): Take third
argument ALIGNMENT_POWER, use it instead of constant 3.
* ld-arm/farcall-arm-nacl.d: New file.
* ld-arm/farcall-arm-nacl-pic.d: New file.
* ld-arm/farcall-data-nacl.d: New file.
* ld-arm/arm-elf.exp (armeabitests_common): Add extra element to
"action" lists for those cases to use a different dump file for NaCl
targets.
Massage $armeabitests_common to drop the extra element or the one
before it, depending on [istarget "arm*-*-nacl*"].
* ld-arm/arm-elf.exp (armelftests_common): Move all "Cortex-A8
erratum fix", Thumb-only and interworking cases to ...
(armelftests_nonacl): ... here.
(armeabitests_common): Move all "erratum 760522 fix", Thumb-only
and interworking cases to ...
(armeabitests_nonacl): ... here.
* elf32-arm.c (allocate_dynrelocs_for_symbol): Transform
ST_BRANCH_TO_ARM into ST_BRANCH_TO_THUMB if the target only
supports thumb instructions.
PR ld/15302
* ld-arm/branch-lks-sym.ld: New script.
* ld-arm/thumb-b-lks-sym.s: New test.
* ld-arm/thumb-b-lks-sym.d: Expected disassembly.
* ld-arm/thumb-bl-lks-sym.s: New test.
* ld-arm/thumb-bl-lks-sym.d: Expected disassembly.
* ld-arm/arm-elf.exp: Run the new tests.
* elf32-arm.c (elf32_arm_allocate_plt_entry): If HTAB->nacl_p,
allocate space for PLT header even if IS_IPLT_ENTRY.
(arm_nacl_put_plt0): New function, broken out of ...
(elf32_arm_finish_dynamic_sections): ... here. Call it.
If HTAB->nacl_p, set up the PLT header in .iplt too.
(elf32_arm_output_arch_local_syms): If HTAB->nacl_p, write
a mapping symbol for the start of .iplt too.
2013-03-20 Will Newton <will.newton@linaro.org>
* elf32-arm.c (elf32_arm_final_link_relocate): Avoid emitting a
dynamic reloc for symbols with dynindx == -1.
(allocate_dynrelocs_for_symbol): Avoid allocating space for a
dynamic reloc for symbols with dynindx == -1.
2013-03-20 Will Newton <will.newton@linaro.org>
* elf32-arm.c (elf32_arm_final_link_relocate): Avoid emitting a
dynamic reloc for symbols with dynindx == -1.
(allocate_dynrelocs_for_symbol): Avoid allocating space for a
dynamic reloc for symbols with dynindx == -1.
2012-11-16 Joey Ye <joey.ye@arm.com>
* elf32-arm.c (elf32_arm_final_link_relocate,
case R_ARM_THM_ALU_PREL_11_0, case R_ARM_THM_PC12): Align address of
the place being relocated.
(elf32_arm_final_link_relocate, case R_ARM_THM_PC8): Align address
of the place being relocated and truncate addend.
(Pa): New macro.
* elf32-arm.c (elf32_arm_nacl_plt0_entry): Use bic rather than bfc
instruction for data sandboxing.
gold/
* arm.cc (Output_data_plt_arm_nacl::first_plt_entry): Use bic rather
than bfc instruction for data sandboxing.
* elf32-arm.c (elf32_arm_print_private_bfd_data): Recognise and
display the new ARM hard-float/soft-float ABI flags for EABI_VER5
(elf32_arm_post_process_headers): Add the hard-float/soft-float
ABI flag as appropriate for ET_DYN/ET_EXEC in EABI_VER5.
binutils:
* readelf.c (decode_ARM_machine_flags): Recognise and display the
new ARM hard-float/soft-float ABI flags for EABI_VER5. Split out
the code for EABI_VER4 and EABI_VER5 to allow this.
elfcpp:
* arm.h: New enum for EABI soft- and hard-float flags.
gold:
* gold.cc (Target_arm::do_adjust_elf_header): Add the
hard-float/soft-float ABI flag as appropriate for ET_DYN/ET_EXEC
in EABI_VER5.
include:
* elf/arm.h (EF_ARM_ABI_FLOAT_SOFT): New define.
(EF_ARM_ABI_FLOAT_HARD): Likewise.
ld/testsuite:
* ld-arm/eabi-hard-float.s: New test source.
* ld-arm/eabi-soft-float.s: New test source.
* ld-arm/eabi-hard-float.d: New test.
* ld-arm/eabi-soft-float.d: New test.
* ld-arm/eabi-soft-float-ABI4.d: New test.
* ld-arm/eabi-soft-float-r.d: New test.
* ld-arm/arm-elf.xp: Use the new tests.
binutils:
PR binutils/14779
* configure.in: Add checks for wchar.h and mbstate_t.
* config.in: Regenerate.
* configure: Regenerate.
* readelf.c: Conditionally include wchar.h.
(print_symbol): Conditionally use mbstate_t.
* elf32-arm.c (elf32_arm_finish_dynamic_sections): Report an error
if a required section is missing from the linker script.
* ld-arm/arm-elf.exp: Add tests of linking without .rel.plt.
* ld-arm/arm-no-rel-plt.out: Linker script without .rel.plt section.
* ld-arm/arm-no-rel-plt.out: Expected output.
bfd/
* bfd.c (bfd_find_nearest_line_discriminator): New macro.
* coff-rs6000.c: Init _bfd_find_nearest_line_discriminator.
* coff64-rs6000.c: Likewise.
* dwarf2.c (struct line_info): Add discriminator field.
(add_line_info): Fill in new discriminator field.
(decode_line_info): Record discriminator information instead
of ignoring it.
(lookup_address_in_line_info_table): Return discriminator field if
requested.
(comp_unit_find_nearest_line): Add discriminator argument.
(find_line): Likewise.
(_bfd_dwarf2_find_nearest_line): Likewise.
(_bfd_dwarf2_find_line): Likewise.
* elf-bfd.h (_bfd_elf_find_nearest_line_discriminator): New.
(_bfd_elf_find_line_discriminator): Likewise.
(_bfd_generic_find_nearest_line_discriminator): Likewise. Defined.
* elf.c (_bfd_elf_find_nearest_line): Change to a wrapper
that invokes _bfd_elf_find_nearest_line_discriminator with correct
arguments.
(_bfd_elf_find_nearest_line_discriminator): New.
(_bfd_elf_find_line): Change to a wrapper
that invokes _bfd_elf_find_line_discriminator with correct
arguments.
(_bfd_elf_find_line_discriminator): New.
* coffgen.c (coff_find_nearest_line_with_names): Handle
new discriminator argument.
* elf32-arm.c (elf32_arm_find_nearest_line): Likewise.
* elf64-alpha.c (elf64_alpha_find_nearest_line): Likewise.
* elfxx-mips.c (_bfd_mips_elf_find_nearest_line): Likewise.
* mach-o.c (bfd_mach_o_find_nearest_line): Likewise.
* libbfd-in.h (_bfd_dwarf2_find_nearest_line): Add discriminator
argument.
(_bfd_dwarf2_find_line): Likewise.
(_bfd_generic_find_nearest_line_discriminator): New.
* libbfd.c (_bfd_generic_find_nearest_line_discriminator): New.
* bfd-in2.h: Regenerated.
* libbfd.h: Likewise.
* targets.c (BFD_JUMP_TABLE_SYMBOLS): Initialize
_bfd_find_nearest_line_discriminator with
_bfd_generic_find_nearest_line_discriminator.
(bfd_target): Add _bfd_find_nearest_line_discriminator.
binutils/
* addr2line.c (find_address_in_section): Invoke
bfd_find_nearest_line_discriminator to get the discriminator.
(find_offset_in_section): Likewise.
(translate_addresses): Print discriminator if it is non-zero.
* objdump.c (show_line): Invoke
bfd_find_nearest_line_discriminator to get the discriminator,
and keep track of prev_discriminator. Print discriminator
if it is non-zero.
(disassemble_data): Initialize prev_discriminator.
(dump_reloc_set): Invoke bfd_find_nearest_line_discriminator
to get the discriminator, and keep track of last_discriminator.
Print discriminator if it is non-zero.
Will Newton
Kyle McMartin
Alan Modra
Yury Gribov
Nick Clifton
Ma Jiang
H.J. Lu
Roland McGrath
Will Newton
Julian Brown
Yufeng Zhang
Matthew Gretton-Dann
Cary Coutant