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2019-08-22AArch64: Fix LD crash on weak and undefined TLS symbols. (PR/24602).Tamar Christina1-2/+2
This patch fixes a few linker crashes due to TLS code reaching an assert when it shouldn't. The first scenario is with weak TLS symbols that remain weak during linking. In this case the mid-end would not have seen a TLS symbol and so wouldn't have allocated the TLS section. We currently assert here and the linker crashes with a not very useful message. This patch changes this to return the value 0 for the TLS symbol in question emulating what lld and gold and other BFD targets do. However because weak TLS is implementation defined and we don't define any behavior for it I also emit a warning to the user to inform them of such. Secondly when a strong TLS reference is undefined. The linker crashes even after it correctly reported that there is an undefined reference. This changes it so that it gracefully exits and reports a useful error. bfd/ChangeLog: PR ld/24601 * elfnn-aarch64.c (aarch64_relocate): Handle weak TLS and undefined TLS. Also Pass input_bfd to _bfd_aarch64_elf_resolve_relocation. * elfxx-aarch64.c (_bfd_aarch64_elf_resolve_relocation): Use it. * elfxx-aarch64.h (_bfd_aarch64_elf_resolve_relocation): Emit warning for weak TLS. ld/ChangeLog: PR ld/24601 * testsuite/ld-aarch64/aarch64-elf.exp (undef-tls, weak-tls): New. * testsuite/ld-aarch64/undef-tls.d: New test. * testsuite/ld-aarch64/undef-tls.s: New test. * testsuite/ld-aarch64/weak-tls.d: New test. * testsuite/ld-aarch64/weak-tls.s: New test.
2019-03-20[BFD, AArch64] Define elf_backend_fixup_gnu_properties in AArch64Sudakshina Das1-0/+7
This patch add support for elf_backend_fixup_gnu_properties for GNU property support for AArch64. The new AArch64 specific definition _bfd_aarch64_elf_link_fixup_gnu_properties goes through the property list to find AArch64 type properties and removes the properties that are marked as "property_remove". *** bfd/ChangeLog *** 2019-03-20 Sudakshina Das <sudi.das@arm.com> * elfxx-aarch64.c (_bfd_aarch64_elf_link_fixup_gnu_properties): Define. * elfxx-aarch64.h (_bfd_aarch64_elf_link_fixup_gnu_properties): Declare. (elf_backend_fixup_gnu_properties): Define for AArch64.
2019-03-13[BFD, LD, AArch64, 1/3] Add support for GNU PROPERTIES in AArch64 for BTI ↵Sudakshina Das1-0/+16
and PAC This is part of the patch series to add support for BTI and PAC in AArch64 linker. This patch implements the following: 1) This extends in the gnu property support in the linker for AArch64 by defining backend hooks for elf_backend_setup_gnu_properties, elf_backend_merge_gnu_properties and elf_backend_parse_gnu_properties. 2) It defines AArch64 specific GNU property GNU_PROPERTY_AARCH64_FEATURE_1_AND and 2 bit for BTI and PAC in it. 3) It also adds support in readelf.c to read and print these new GNU properties in AArch64. 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> * elf-properties.c (_bfd_elf_link_setup_gnu_properties): Exclude linker created inputs from merge. * elfnn-aarch64.c (struct elf_aarch64_obj_tdata): Add field for GNU_PROPERTY_AARCH64_FEATURE_1_AND properties. (elfNN_aarch64_link_setup_gnu_properties): New. (elfNN_aarch64_merge_gnu_properties): New. (elf_backend_setup_gnu_properties): Define for AArch64. (elf_backend_merge_gnu_properties): Likewise. * elfxx-aarch64.c (_bfd_aarch64_elf_link_setup_gnu_properties): Define. (_bfd_aarch64_elf_parse_gnu_properties): Define. (_bfd_aarch64_elf_merge_gnu_properties): Define. * elfxx-aarch64.h (_bfd_aarch64_elf_link_setup_gnu_properties): Declare. (_bfd_aarch64_elf_parse_gnu_properties): Declare. (_bfd_aarch64_elf_merge_gnu_properties): Declare. (elf_backend_parse_gnu_properties): Define for AArch64. *** binutils/ChangeLog *** 2019-03-13 Sudakshina Das <sudi.das@arm.com> * readelf.c (decode_aarch64_feature_1_and): New. (print_gnu_property_note): Add case for AArch64 gnu notes. *** include/ChangeLog *** 2019-03-13 Sudakshina Das <sudi.das@arm.com> * elf/common.h (GNU_PROPERTY_AARCH64_FEATURE_1_AND): New. (GNU_PROPERTY_AARCH64_FEATURE_1_BTI): New. (GNU_PROPERTY_AARCH64_FEATURE_1_PAC): New. *** ld/ChangeLog *** 2019-03-13 Sudakshina Das <sudi.das@arm.com> * NEWS: Document GNU_PROPERTY_AARCH64_FEATURE_1_BTI and GNU_PROPERTY_AARCH64_FEATURE_1_PAC. * testsuite/ld-aarch64/aarch64-elf.exp: Add run commands for new tests. * testsuite/ld-aarch64/property-bti-pac1.d: New test. * testsuite/ld-aarch64/property-bti-pac1.s: New test. * testsuite/ld-aarch64/property-bti-pac2.d: New test. * testsuite/ld-aarch64/property-bti-pac2.s: New test. * testsuite/ld-aarch64/property-bti-pac3.d: New test.
2019-01-01Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2018-12-18Include bfd_stdint.h in bfd.hAlan Modra1-4/+0
This patch adds bfd_stdint.h to bfd.h, so that BFD can use size_t where appropriate in function parameters and return values. I also tidy a few other cases where headers are included twice. bfd/ * Makefile.am (bfdinclude_HEADERS): Add bfd_stdint.h. (BFD_H_DEPS): Add include/diagnostics.h. (LOCAL_H_DEPS): Add bfd_stdint.h. * bfd-in.h: Include bfd_stdint.h. * arc-plt.h: Don't include stdint.h. * coff-rs6000.c: Likewise. * coff64-rs6000.c: Likewise. * elfxx-riscv.c: Likewise. * cache.c: Don't include bfd_stdint.h. * elf32-arm.c: Likewise. * elf32-avr.c: Likewise. * elf32-nds32.c: Likewise. * elf32-rl78.c: Likewise. * elf32-rx.c: Likewise. * elf32-wasm32.c: Likewise. * elf64-nfp.c: Likewise. * elflink.c: Likewise. * elfnn-aarch64.c: Likewise. * elfnn-ia64.c: Likewise. * elfxx-ia64.c: Likewise. * elfxx-x86.h: Likewise. * wasm-module.c: Likewise, and don't include sysdep.h twice. * elf-nacl.h: Don't include bfd.h. * mach-o.h: Likewise. * elfxx-aarch64.c: Include bfd.h and elf-bfd.h. * elfxx-aarch64.h: Don't include bfd.h, elf-bfd.h or stdint.h. * mach-o-aarch64.c: Include mach-o.h later. * mach-o-arm.c: Likewise. * mach-o-i386.c: Likewise. * mach-o-x86-64.c: Likewise. * mach-o.c: Likewise. * sysdep.h: Don't include ansidecl.h or sys/stat.h. * Makefile.in: Regenerate. * bfd-in2.h: Regenerate. opcodes/ * arm-dis.c: Include bfd.h. * aarch64-opc.c: Include bfd_stdint.h rather than stdint.h. * csky-dis.c: Likewise. * nds32-asm.c: Likewise. * riscv-dis.c: Likewise. * s12z-dis.c: Likewise. * wasm32-dis.c: Likewise.
2018-05-28ld: Unify STT_GNU_IFUNC handlingH.J. Lu1-6/+0
Take STT_GNU_IFUNC handling scattered across targets and gather it in the generic ELF linker. bfd/ PR ld/23238 * elf-s390-common.c (elf_s390_add_symbol_hook): Removed. * elf32-arc.c (elf_arc_add_symbol_hook): Likewise. (elf_backend_add_symbol_hook): Likewise. * elf32-m68k.c (elf_m68k_add_symbol_hook): Likewise. (elf_backend_add_symbol_hook): Likewise. * elf32-s390.c (elf_backend_add_symbol_hook): Likewise. * elf32-sparc.c (elf32_sparc_add_symbol_hook): Likewise. (elf_backend_add_symbol_hook): Likewise. * elf64-s390.c (elf_backend_add_symbol_hook): Likewise. * elfxx-aarch64.c (_bfd_aarch64_elf_add_symbol_hook): Likewise. * elfxx-aarch64.h (_bfd_aarch64_elf_add_symbol_hook): Likewise. (elf_backend_add_symbol_hook): Likewise. * elf32-arm.c (elf32_arm_add_symbol_hook): Remove STT_GNU_IFUNC handling. * elf32-ppc.c (ppc_elf_add_symbol_hook): Likewise. * elf64-ppc.c (ppc64_elf_add_symbol_hook): Likewise. * elf64-sparc.c (elf64_sparc_add_symbol_hook): Likewise. * elflink.c (elf_link_add_object_symbols): Set elf_gnu_symbol_ifunc for STT_GNU_IFUNC symbols. ld/ PR ld/23238 * testsuite/ld-ifunc/ifunc-26.d: New file. * testsuite/ld-ifunc/ifunc-26.s: Likewise. * testsuite/ld-ifunc/ifunc.exp: Run *.d tests without a working compiler.
2018-01-03Update year range in copyright notice of binutils filesAlan Modra1-1/+1
2017-12-06BFD whitespace fixesAlan Modra1-3/+3
Binutils is supposed to use tabs. In my git config I have whitespace = indent-with-non-tab,space-before-tab,trailing-space and I got annoyed enough seeing red in "git diff" output to fix the problems. * doc/header.sed: Trim trailing space when splitting lines. * aix386-core.c, * aout-adobe.c, * aout-arm.c, * aout-cris.c, * aout-ns32k.c, * aout-target.h, * aout-tic30.c, * aoutf1.h, * aoutx.h, * arc-got.h, * arc-plt.def, * arc-plt.h, * archive.c, * archive64.c, * archures.c, * armnetbsd.c, * bfd-in.h, * bfd.c, * bfdio.c, * binary.c, * bout.c, * cache.c, * cisco-core.c, * coff-alpha.c, * coff-apollo.c, * coff-arm.c, * coff-h8300.c, * coff-i386.c, * coff-i860.c, * coff-i960.c, * coff-m68k.c, * coff-m88k.c, * coff-mcore.c, * coff-mips.c, * coff-ppc.c, * coff-rs6000.c, * coff-sh.c, * coff-stgo32.c, * coff-tic4x.c, * coff-tic54x.c, * coff-tic80.c, * coff-we32k.c, * coff-x86_64.c, * coff-z80.c, * coff-z8k.c, * coff64-rs6000.c, * coffcode.h, * coffgen.c, * cofflink.c, * coffswap.h, * compress.c, * corefile.c, * cpu-alpha.c, * cpu-arm.c, * cpu-avr.c, * cpu-bfin.c, * cpu-cr16.c, * cpu-cr16c.c, * cpu-crx.c, * cpu-d10v.c, * cpu-frv.c, * cpu-ft32.c, * cpu-i370.c, * cpu-i960.c, * cpu-ia64-opc.c, * cpu-ip2k.c, * cpu-lm32.c, * cpu-m32r.c, * cpu-mcore.c, * cpu-microblaze.c, * cpu-mips.c, * cpu-moxie.c, * cpu-mt.c, * cpu-nios2.c, * cpu-ns32k.c, * cpu-or1k.c, * cpu-powerpc.c, * cpu-pru.c, * cpu-sh.c, * cpu-spu.c, * cpu-v850.c, * cpu-v850_rh850.c, * cpu-xgate.c, * cpu-z80.c, * dwarf1.c, * dwarf2.c, * ecoff.c, * ecofflink.c, * ecoffswap.h, * elf-bfd.h, * elf-eh-frame.c, * elf-hppa.h, * elf-m10200.c, * elf-m10300.c, * elf-s390-common.c, * elf-strtab.c, * elf-vxworks.c, * elf.c, * elf32-am33lin.c, * elf32-arc.c, * elf32-arm.c, * elf32-avr.c, * elf32-avr.h, * elf32-bfin.c, * elf32-cr16.c, * elf32-cr16c.c, * elf32-cris.c, * elf32-crx.c, * elf32-d10v.c, * elf32-d30v.c, * elf32-dlx.c, * elf32-epiphany.c, * elf32-fr30.c, * elf32-frv.c, * elf32-ft32.c, * elf32-h8300.c, * elf32-hppa.c, * elf32-i386.c, * elf32-i860.c, * elf32-i960.c, * elf32-ip2k.c, * elf32-lm32.c, * elf32-m32c.c, * elf32-m32r.c, * elf32-m68hc11.c, * elf32-m68hc12.c, * elf32-m68hc1x.c, * elf32-m68hc1x.h, * elf32-m68k.c, * elf32-m88k.c, * elf32-mcore.c, * elf32-mep.c, * elf32-metag.c, * elf32-microblaze.c, * elf32-mips.c, * elf32-moxie.c, * elf32-msp430.c, * elf32-mt.c, * elf32-nds32.c, * elf32-nds32.h, * elf32-nios2.c, * elf32-or1k.c, * elf32-pj.c, * elf32-ppc.c, * elf32-ppc.h, * elf32-pru.c, * elf32-rl78.c, * elf32-rx.c, * elf32-s390.c, * elf32-score.c, * elf32-score.h, * elf32-score7.c, * elf32-sh-symbian.c, * elf32-sh.c, * elf32-sh64.c, * elf32-sparc.c, * elf32-spu.c, * elf32-tic6x.c, * elf32-tilegx.c, * elf32-tilegx.h, * elf32-tilepro.c, * elf32-tilepro.h, * elf32-v850.c, * elf32-vax.c, * elf32-wasm32.c, * elf32-xc16x.c, * elf32-xgate.c, * elf32-xgate.h, * elf32-xstormy16.c, * elf32-xtensa.c, * elf64-alpha.c, * elf64-hppa.c, * elf64-ia64-vms.c, * elf64-mips.c, * elf64-mmix.c, * elf64-ppc.c, * elf64-s390.c, * elf64-sh64.c, * elf64-sparc.c, * elf64-tilegx.c, * elf64-tilegx.h, * elf64-x86-64.c, * elfcore.h, * elflink.c, * elfn32-mips.c, * elfnn-aarch64.c, * elfnn-ia64.c, * elfnn-riscv.c, * elfxx-aarch64.c, * elfxx-aarch64.h, * elfxx-ia64.c, * elfxx-ia64.h, * elfxx-mips.c, * elfxx-riscv.c, * elfxx-sparc.c, * elfxx-tilegx.c, * elfxx-x86.c, * elfxx-x86.h, * freebsd.h, * hash.c, * host-aout.c, * hp300hpux.c, * hppabsd-core.c, * hpux-core.c, * i386aout.c, * i386linux.c, * i386lynx.c, * i386mach3.c, * i386msdos.c, * i386netbsd.c, * ieee.c, * ihex.c, * irix-core.c, * libaout.h, * libbfd-in.h, * libbfd.c, * libcoff-in.h, * libnlm.h, * libpei.h, * libxcoff.h, * linker.c, * lynx-core.c, * m68k4knetbsd.c, * m68klinux.c, * m68knetbsd.c, * m88kmach3.c, * mach-o-aarch64.c, * mach-o-arm.c, * mach-o-i386.c, * mach-o-target.c, * mach-o-x86-64.c, * mach-o.c, * mach-o.h, * merge.c, * mipsbsd.c, * mmo.c, * netbsd.h, * netbsd-core.c, * newsos3.c, * nlm-target.h, * nlm32-ppc.c, * nlm32-sparc.c, * nlmcode.h, * ns32k.h, * ns32knetbsd.c, * oasys.c, * opncls.c, * pc532-mach.c, * pdp11.c, * pe-arm.c, * pe-i386.c, * pe-mcore.c, * pe-mips.c, * pe-x86_64.c, * peXXigen.c, * pef.c, * pef.h, * pei-arm.c, * pei-i386.c, * pei-mcore.c, * pei-x86_64.c, * peicode.h, * plugin.c, * ppcboot.c, * ptrace-core.c, * reloc.c, * riscix.c, * rs6000-core.c, * section.c, * som.c, * som.h, * sparclinux.c, * sparcnetbsd.c, * srec.c, * stabs.c, * sunos.c, * syms.c, * targets.c, * tekhex.c, * trad-core.c, * vax1knetbsd.c, * vaxnetbsd.c, * verilog.c, * versados.c, * vms-alpha.c, * vms-lib.c, * vms-misc.c, * wasm-module.c, * wasm-module.h, * xcofflink.c, * xsym.c, * xsym.h: Whitespace fixes. * bfd-in2.h, * libbfd.h, * libcoff.h: Regenerate.
2017-01-02Update year range in copyright notice of all files.Alan Modra1-1/+1
2016-01-01Copyright update for binutilsAlan Modra1-1/+1
2015-04-01[AArch64] Workaround for Cortex A53 erratum 843419Marcus Shawcroft1-0/+13
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.
2015-01-02ChangeLog rotatation and copyright year updateAlan Modra1-1/+1
2014-06-13Add support for reading Aarch64 core dumps.Omair Javaid1-2/+9
* 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.
2014-03-05Update copyright yearsAlan Modra1-1/+1
2013-06-26[AArch64, ILP32] 4/6 Split elfnn-aarch64.c to elfxx-aarch64.cYufeng Zhang1-0/+47
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.
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