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2016-06-22 Thomas Preud'homme <thomas.preudhomme@arm.com>
* bfd/elf32-arm.c (cmse_scan): Declare and initialize j in the
innermost conditional block containing all its uses.
2016-06-20 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (elf32_arm_gc_mark_extra_sections): Mark sections holding
ARMv8-M secure entry functions.
2016-05-20 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (enum elf32_arm_stub_type): Remove
arm_stub_a8_veneer_lwm enumerator.
(arm_stub_a8_veneer_lwm): New global constant.
(elf32_arm_size_stubs): Break if stub was only updated.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (elf32_arm_get_stub_entry): Assert that we don't access
passed the end of htab->stub_group array.
(elf32_arm_create_or_find_stub_sec): Likewise.
(elf32_arm_create_stub): Likewise.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* bfd-in.h (bfd_elf32_arm_set_target_relocs): Add a new parameter for
the input import library bfd.
* bfd-in2.h: Regenerate.
* elf32-arm.c (struct elf32_arm_link_hash_table): New in_implib_bfd
and new_cmse_stub_offset fields.
(stub_hash_newfunc): Initialize stub_offset and stub_template_size to
-1.
(elf32_arm_add_stub): Likewise for stub_offset.
(arm_new_stubs_start_offset_ptr): New function.
(arm_build_one_stub): Only allocate a stub_offset if it is -1. Allow
empty veneers to have zero relocations.
(arm_size_one_stub): Only initialize stub size and template
information for non empty veneers. Do not update veneer section size
if veneer already has an offset.
(elf32_arm_create_stub): Return the stub entry pointer or NULL instead
of a boolean indicating success or failure.
(cmse_scan): Change stub_changed parameter into an integer pointer
parameter cmse_stub_created to count the number of stub created and
adapt to change of return value in elf32_arm_create_stub.
(cmse_entry_fct_p): New function.
(arm_list_new_cmse_stub): Likewise.
(set_cmse_veneer_addr_from_implib): Likewise.
(elf32_arm_size_stubs): Define cmse_stub_created, pass its address to
cmse_scan instead of that of cmse_stub_changed to compute the number
of stub created and use it to initialize stub_changed. Call
set_cmse_veneer_addr_from_implib after all cmse_scan. Adapt to change
of return value in elf32_arm_create_stub. Use
arm_stub_section_start_offset () if not NULL to initialize size of
secure gateway veneers section. Initialize stub_offset of Cortex-A8
erratum fix to -1. Use ret to hold return value.
(elf32_arm_build_stubs): Use arm_stub_section_start_offset () if not
NULL to initialize size of secure gateway veneers section. Adapt
comment to stress the importance of zeroing veneer section content.
(bfd_elf32_arm_set_target_relocs): Add new in_implib_bfd parameter to
initialize eponymous field in struct elf32_arm_link_hash_table.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* bfd-in.h (bfd_elf32_arm_set_target_relocs): Add one parameter.
* bfd-in2.h: Regenerate.
* elf32-arm.c (struct elf32_arm_link_hash_table): Declare new
cmse_implib field.
(bfd_elf32_arm_set_target_relocs): Add new parameter to initialize
cmse_implib field in struct elf32_arm_link_hash_table.
(elf32_arm_filter_cmse_symbols): New function.
(elf32_arm_filter_implib_symbols): Likewise.
(elf_backend_filter_implib_symbols): Define to
elf32_arm_filter_implib_symbols.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf-bfd.h (elf_backend_filter_implib_symbols): Declare backend hook.
(_bfd_elf_filter_global_symbols): Declare.
* elf.c (_bfd_elf_filter_global_symbols): New function.
* elflink.c (elf_filter_global_symbols): Likewise.
(elf_output_implib): Likewise.
(bfd_elf_final_link): Call above function, failing if it does.
* elfxx-target.h (elf_backend_filter_implib_symbols): Define macro and
default it to NULL.
(elf_backend_copy_indirect_symbol): Fix spacing.
(elf_backend_hide_symbol): Likewise.
(elfNN_bed): Initialize elf_backend_filter_implib_symbols backend hook.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (CMSE_PREFIX): Define macro.
(elf32_arm_stub_cmse_branch_thumb_only): Define stub sequence.
(cmse_branch_thumb_only): Declare stub.
(struct elf32_arm_link_hash_table): Define cmse_stub_sec field.
(elf32_arm_get_plt_info): Add globals parameter. Use it to return
FALSE if there is no PLT.
(arm_type_of_stub): Adapt to new elf32_arm_get_plt_info signature.
(elf32_arm_final_link_relocate): Likewise.
(elf32_arm_gc_sweep_hook): Likewise.
(arm_stub_is_thumb): Add case for arm_stub_cmse_branch_thumb_only.
(arm_dedicated_stub_output_section_required): Likewise.
(arm_dedicated_stub_output_section_required_alignment): Likewise.
(arm_stub_dedicated_output_section_name): Likewise.
(arm_stub_dedicated_input_section_ptr): Likewise and remove
ATTRIBUTE_UNUSED for htab parameter.
(arm_stub_required_alignment): Likewise.
(arm_stub_sym_claimed): Likewise.
(arm_dedicated_stub_section_padding): Likewise.
(cmse_scan): New function.
(elf32_arm_size_stubs): Call cmse_scan for ARM M profile targets.
Set stub_changed to TRUE if such veneers were created.
(elf32_arm_swap_symbol_in): Add detection code for CMSE special
symbols.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (arm_dedicated_stub_section_padding): New function.
(elf32_arm_size_stubs): Declare stub_type in a more outer scope and
account for padding for stub section requiring one.
(elf32_arm_build_stubs): Add comment to stress the importance of
zeroing veneer section content.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* bfd-in.h (bfd_elf32_arm_keep_private_stub_output_sections): Declare
bfd hook.
* bfd-in2.h: Regenerate.
* elf32-arm.c (arm_dedicated_stub_output_section_required): New
function.
(arm_dedicated_stub_output_section_required_alignment): Likewise.
(arm_dedicated_stub_output_section_name): Likewise.
(arm_dedicated_stub_input_section_ptr): Likewise.
(elf32_arm_create_or_find_stub_sec): Add stub type parameter and
function description comment. Add support for dedicated output stub
section to given stub types.
(elf32_arm_add_stub): Add a stub type parameter and pass it down to
elf32_arm_create_or_find_stub_sec.
(elf32_arm_create_stub): Pass stub type down to elf32_arm_add_stub.
(elf32_arm_size_stubs): Pass stub type when calling
elf32_arm_create_or_find_stub_sec for Cortex-A8 erratum veneers.
(bfd_elf32_arm_keep_private_stub_output_sections): New function.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (enum elf32_arm_stub_type): New max_stub_type
enumerator.
(arm_stub_sym_claimed): New function.
(elf32_arm_create_stub): Use veneered symbol name and section if
veneer needs to claim its symbol, and keep logic unchanged otherwise.
(arm_stub_claim_sym): New function.
(arm_map_one_stub): Call arm_stub_claim_sym if veneer needs to claim
veneered symbol, otherwise create local symbol as before.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (elf32_arm_size_stubs): Use new macros
ARM_GET_SYM_BRANCH_TYPE and ARM_SET_SYM_BRANCH_TYPE to respectively get
and set branch type of a symbol.
(bfd_elf32_arm_process_before_allocation): Likewise.
(elf32_arm_relocate_section): Likewise and fix identation along the
way.
(allocate_dynrelocs_for_symbol): Likewise.
(elf32_arm_finish_dynamic_symbol): Likewise.
(elf32_arm_swap_symbol_in): Likewise.
(elf32_arm_swap_symbol_out): Likewise.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* bfd-in.h (elf32_arm_size_stubs): Add an output section parameter.
* bfd-in2.h: Regenerated.
* elf32-arm.c (struct elf32_arm_link_hash_table): Add an output section
parameter to add_stub_section callback.
(elf32_arm_create_or_find_stub_sec): Get output section from link_sec
and pass it down to add_stub_section.
(elf32_arm_add_stub): Set section to stub_sec if NULL before using it
for error message.
(elf32_arm_size_stubs): Add output section parameter to
add_stub_section function pointer parameter.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (elf32_arm_create_stub): New function.
(elf32_arm_size_stubs): Use elf32_arm_create_stub for stub creation.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (struct elf32_arm_stub_hash_entry): Delete target_addend
field and add source_value.
(struct a8_erratum_fix): Delete addend field and add target_offset.
(stub_hash_newfunc): Initialize source_value field amd remove
initialization for target_addend.
(arm_build_one_stub): Stop special casing Thumb relocations: promote
the else to being always executed, moving the
arm_stub_a8_veneer_b_cond specific code in it. Remove
stub_entry->target_addend from points_to computation.
(cortex_a8_erratum_scan): Store in a8_erratum_fix structure the offset
to target symbol from start of section rather than the offset from the
stub address.
(elf32_arm_size_stubs): Set stub_entry's source_value and target_value
fields from struct a8_erratum_fix's offset and target_offset
respectively.
(make_branch_to_a8_stub): Rename target variable to loc. Compute
veneered_insn_loc and loc using stub_entry's source_value.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (elf32_arm_merge_eabi_attributes): Add merging logic for
Tag_DSP_extension.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
Revert
2015-12-17 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (elf32_arm_merge_eabi_attributes): Add merging logic for
Tag_DSP_extension.
2016-03-29 Thomas Preud'homme <thomas.preudhomme@arm.com>
Merge ARMv8-M support code from master as part of merge commit
2015-12-24 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (using_thumb_only): Test again against specific
Tag_CPU_arch value in case Tag_CPU_arch_profile is empty.
(tag_cpu_arch_combine): Remove comma for last entry of each table.
Adjust v4t_plus_v6_m and comb array to account for new
TAG_CPU_ARCH_V4T_PLUS_V6_M value. Deal with NULL values in comb
array.
2015-12-17 Thomas Preud'homme <thomas.preudhomme@arm.com>
(elf32_arm_merge_eabi_attributes): Add merging logic for
Tag_DSP_extension.
2015-12-17 Thomas Preud'homme <thomas.preudhomme@arm.com>
* elf32-arm.c (using_thumb_only): Only check that profile is 'M'.
(tag_cpu_arch_combine): Define v8m_baseline and v8m_mainline and update
v4t_plus_v6_m and comb to deal with ARMv8-M Tag_CPU_arch merging logic.
(elf32_arm_merge_eabi_attributes): Add Tag_CPU_name values for
ARMv8-M.
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