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This is part of the patch series to add support for BTI and PAC in AArch64 linker. 1) This patch adds a new ld command line option: --force-bti. In the presence of this option, the linker enables BTI with the GNU_PROPERTY_AARCH64_FEATURE_1_BTI feature. This gives out warning in case of missing gnu notes for BTI in inputs. 2) It also defines a new set of BTI enabled PLTs. These are used either when all the inputs are marked with GNU_PROPERTY_AARCH64_FEATURE_1_BTI or when the new --force-bti option is used. This required adding new fields in elf_aarch64_link_hash_table so that we could make the PLT related information more generic. 3) It also defines a dynamic tag DT_AARCH64_BTI_PLT. The linker uses this whenever it picks BTI enabled PLTs. All these are made according to the new AArch64 ELF ABI https://developer.arm.com/docs/ihi0056/latest/elf-for-the-arm-64-bit-architecture-aarch64-abi-2018q4 *** bfd/ChangeLog *** 2019-03-13 Sudakshina Das <sudi.das@arm.com> Szabolcs Nagy <szabolcs.nagy@arm.com> * bfd-in.h (aarch64_plt_type, aarch64_enable_bti_type): New. (aarch64_bti_pac_info): New. (bfd_elf64_aarch64_set_options): Add aarch64_bti_pac_info argument. (bfd_elf32_aarch64_set_options): Likewise. * bfd-in2.h: Regenerate * elfnn-aarch64.c (PLT_BTI_ENTRY_SIZE): New. (PLT_BTI_SMALL_ENTRY_SIZE, PLT_BTI_TLSDESC_ENTRY_SIZE): New. (elfNN_aarch64_small_plt0_bti_entry): New. (elfNN_aarch64_small_plt_bti_entry): New. (elfNN_aarch64_tlsdesc_small_plt_bti_entry): New. (elf_aarch64_obj_tdata): Add no_bti_warn and plt_type fields. (elf_aarch64_link_hash_table): Add plt0_entry, plt_entry and tlsdesc_plt_entry_size fields. (elfNN_aarch64_link_hash_table_create): Initialise the new fields. (setup_plt_values): New helper function. (bfd_elfNN_aarch64_set_options): Use new bp_info to set plt sizes and bti enable type. (elfNN_aarch64_allocate_dynrelocs): Use new size members instead of fixed macros. (elfNN_aarch64_size_dynamic_sections): Likewise and add checks. (elfNN_aarch64_create_small_pltn_entry): Use new generic pointers to plt stubs instead of fixed ones and update filling them according to the need for bti. (elfNN_aarch64_init_small_plt0_entry): Likewise. (elfNN_aarch64_finish_dynamic_sections): Likewise. (get_plt_type, elfNN_aarch64_get_synthetic_symtab): New. (elfNN_aarch64_plt_sym_val): Update size accordingly. (elfNN_aarch64_link_setup_gnu_properties): Set up plts if BTI GNU NOTE is set. (bfd_elfNN_get_synthetic_symtab): Define. (elfNN_aarch64_merge_gnu_properties): Give out warning with --force-bti and mising BTI NOTE SECTION. *** binutils/ChangeLog *** 2019-03-13 Sudakshina Das <sudi.das@arm.com> Szabolcs Nagy <szabolcs.nagy@arm.com> * readelf.c (get_aarch64_dynamic_type): New. (get_dynamic_type): Use above for EM_AARCH64. (dynamic_section_aarch64_val): New. (process_dynamic_section): Use above for EM_AARCH64. *** include/ChangeLog *** 2019-03-13 Sudakshina Das <sudi.das@arm.com> Szabolcs Nagy <szabolcs.nagy@arm.com> * elf/aarch64.h (DT_AARCH64_BTI_PLT): New. *** ld/ChangeLog *** 2019-03-13 Sudakshina Das <sudi.das@arm.com> Szabolcs Nagy <szabolcs.nagy@arm.com> * NEWS: Document --force-bti. * emultempl/aarch64elf.em (plt_type, bti_type, OPTION_FORCE_BTI): New. (PARSE_AND_LIST_SHORTOPTS, PARSE_AND_LIST_OPTIONS): Add force-bti. (PARSE_AND_LIST_ARGS_CASES): Handle OPTION_FORCE_BTI. * testsuite/ld-aarch64/aarch64-elf.exp: Add all the tests below. * testsuite/ld-aarch64/bti-plt-1.d: New test. * testsuite/ld-aarch64/bti-plt-1.s: New test. * testsuite/ld-aarch64/bti-plt-2.s: New test. * testsuite/ld-aarch64/bti-plt-2.d: New test. * testsuite/ld-aarch64/bti-plt-3.d: New test. * testsuite/ld-aarch64/bti-plt-4.d: New test. * testsuite/ld-aarch64/bti-plt-5.d: New test. * testsuite/ld-aarch64/bti-plt-6.d: New test. * testsuite/ld-aarch64/bti-plt-7.d: New test. * testsuite/ld-aarch64/bti-plt-so.s: New test. * testsuite/ld-aarch64/bti-plt.ld: New test.
101 lines
2.7 KiB
Plaintext
101 lines
2.7 KiB
Plaintext
2019-03-13 Sudakshina Das <sudi.das@arm.com>
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Szabolcs Nagy <szabolcs.nagy@arm.com>
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* elf/aarch64.h (DT_AARCH64_BTI_PLT): New.
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2019-03-13 Sudakshina Das <sudi.das@arm.com>
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* elf/common.h (GNU_PROPERTY_AARCH64_FEATURE_1_AND): New.
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(GNU_PROPERTY_AARCH64_FEATURE_1_BTI): New.
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(GNU_PROPERTY_AARCH64_FEATURE_1_PAC): New.
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2019-02-20 Alan Hayward <alan.hayward@arm.com>
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* elf/common.h (NT_ARM_PAC_MASK): Add define.
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2019-02-15 Saagar Jha <saagar@saagarjha.com>
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* mach-o/loader.h: Use new OS names in comments.
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2019-02-11 Philippe Waroquiers <philippe.waroquiers@skynet.be>
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* splay-tree.h (splay_tree_delete_key_fn): Update comment.
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(splay_tree_delete_value_fn): Likewise.
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2019-01-31 Andreas Krebbel <krebbel@linux.ibm.com>
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* opcode/s390.h (enum s390_opcode_cpu_val): Add
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S390_OPCODE_ARCH13.
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2019-01-25 Sudakshina Das <sudi.das@arm.com>
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Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>
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* opcode/aarch64.h (enum aarch64_opnd): Remove
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AARCH64_OPND_ADDR_SIMPLE_2.
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(enum aarch64_insn_class): Remove ldstgv_indexed.
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2019-01-22 Tom Tromey <tom@tromey.com>
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* coff/ecoff.h: Include coff/sym.h.
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2018-06-24 Nick Clifton <nickc@redhat.com>
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2.32 branch created.
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2019-01-16 Kito Cheng <kito@andestech.com>
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* elf/riscv.h (SHT_RISCV_ATTRIBUTES): Define.
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(Tag_RISCV_arch): Likewise.
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(Tag_RISCV_priv_spec): Likewise.
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(Tag_RISCV_priv_spec_minor): Likewise.
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(Tag_RISCV_priv_spec_revision): Likewise.
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(Tag_RISCV_unaligned_access): Likewise.
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(Tag_RISCV_stack_align): Likewise.
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2019-01-14 Pavel I. Kryukov <kryukov@frtk.ru>
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* dis-asm.h: include <string.h>
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2019-01-10 Nick Clifton <nickc@redhat.com>
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* Merge from GCC:
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2018-12-22 Jason Merrill <jason@redhat.com>
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* demangle.h: Remove support for ancient GNU (pre-3.0), Lucid,
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ARM, HP, and EDG demangling styles.
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2019-01-09 Sandra Loosemore <sandra@codesourcery.com>
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Merge from GCC:
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PR other/16615
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* libiberty.h: Mechanically replace "can not" with "cannot".
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* plugin-api.h: Likewise.
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2018-12-25 Yoshinori Sato <ysato@users.sourceforge.jp>
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* elf/rx.h (EF_RX_CPU_MASK): Update new bits.
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(E_FLAG_RX_V3): New RXv3 type.
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* opcode/rx.h (RX_Size): Add double size.
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(RX_Operand_Type): Add double FPU registers.
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(RX_Opcode_ID): Add new instuctions.
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2019-01-01 Alan Modra <amodra@gmail.com>
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Update year range in copyright notice of all files.
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For older changes see ChangeLog-2018
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Copyright (C) 2019 Free Software Foundation, Inc.
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Copying and distribution of this file, with or without modification,
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are permitted in any medium without royalty provided the copyright
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notice and this notice are preserved.
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Local Variables:
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mode: change-log
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left-margin: 8
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fill-column: 74
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version-control: never
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End:
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