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2015-01-29This patch adds IFUNC support for arm gold backend.Han Shen1-1/+1
This is a feature required in chromeos arm development work. Tested: 1) Built passed all-gold on x86_64 machine 2) Tested with basic gold aarch64 ifunc unittests - a) global ifunc, statically/non-statically linked b) local ifunc, statically/non-statically linked c) global/local, other shared library routine mixed, statically/non-statically linked d) arm/thumb mode ifunc e) linking chrome browser passed
2015-01-02ChangeLog rotatation and copyright year updateAlan Modra1-1/+1
2014-12-14Cast current_group_size to unsigned longH.J. Lu1-1/+1
* aarch64.cc (AArch64_relocate_functions::maybe_apply_stub): Cast current_group_size to unsigned long when reporting error.
2014-12-10Give informative error message for stub-group-sizeJing Yu1-10/+17
This patch gives current stub-group-size in error message when stub is too far away. * aarch64.cc (Target_aarch64): Add new variable: stub_group_size_. (AArch64_relocate_functions::maybe_apply_stub): Add new parameter. Update error message. (Target_aarch64::do_relax): Use absolute value of option stub_group_size. Replace local variable with class member stub_group_size_.
2014-11-26Fix for gold linking tlsdesc into an executable with -pie.Han Shen1-0/+5
(Also included in this patch is a minor typo fix in gold/ChangeLog.) When linking the following tlsdesc access sequence into an executable with -pie, adrp x0, :tlsdesc:tls_gd ldr x1, [x0, #:tlsdesc_lo12:tls_gd] add x0, x0, :tlsdesc_lo12:tls_gd .tlsdesccall tls_gd blr x1 mrs x1, tpidr_el0 add x0, x1, x0 ldr w0, [x0] current gold-aarch64 backend does tls-desc-gd-to-ie relaxation, into adrp x0, 1000 <__FRAME_END__+0x720> ldr x1, [x0,#4064] ;; <=== the target register should be x0 nop nop mrs x1, tpidr_el0 add x0, x1, x0 ldr w0, [x0] This code is wrong. The fix changes ldr target register into x0.
2014-10-29Misc about gold for aarch64 backend.Han Shen1-122/+566
The patch does the following things: -- Add support for ifunc. -- Enable safe icf -- Add support for TLSLD relocations R_AARCH64_TLSLD_ADR_PAGE21, R_AARCH64_TLSLD_ADD_LO12_NC, R_AARCH64_TLSLD_MOVW_DTPREL_G1, R_AARCH64_TLSLD_MOVW_DTPREL_G0_NC. (R_AARCH64_TLSLD_MOVW_* are used by LLVM.) -- Add support for TLSLD->TLSLE relaxation. -- Add support for R_AARCH64_LD_PREL_LO19, R_AARCH64_ADR_PREL_LO21. -- Fix 2 encoding bugs in AArch64_relocate_functions::update_movnz. -- Correct TLS relocation properties in gold/aarch64-reloc.def. -- Update testsuite/icf_safe_so_test.cc, testsuite/icf_safe_test.sh. gold/ 2014-10-29 Han Shen <shenhan@google.com> Jing Yu <jingyu@google.com> * aarch64-reloc.def: Add LD_PREL_LO12, ADR_PREL_LO21, TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC. Change property of TLS relocations to Symbol::TLS_REF. * aarch64.cc (Target_aarch64::do_can_check_for_function_pointers): New method. (Target_aarch64::reloc_needs_plt_for_ifunc): New method. (Target_aarch64::tls_ld_to_le): New method. (Target_aarch64::aarch64_info): Enable can_icf_inline_merge_sections for 64bit targets. (Output_data_plt_aarch64::irelative_rel_): New data member. (Output_data_plt_aarch64::add_entry): Add irelative entries to plt. (Output_data_plt_aarch64::add_local_ifunc_entry): New method. (Output_data_plt_aarch64::add_relocation): New method. (Output_data_plt_aarch64::do_write): Add gold_assert on got_irelative offset. Add got_irelative size to got size. (AArch64_relocate_functions): Typedef AArch64_valtype. Replace long type string with the new typename. (AArch64_relocate_functions::update_adr): Replace parameter x with immed. (AArch64_relocate_functions::update_movnz): Correct wrong val mask. (AArch64_relocate_functions::reloc_common): New method. (AArch64_relocate_funcsions::rela_general): Extract common part out into reloc_common method. (AArch64_relocate_functions::rela_general): Likewise. (AArch64_relocate_functions::pcrela_general): Likewise. (AArch64_relocate_functions::adr): New method. (AArch64_relocate_functions::adrp): Calculate immed before calling update_adr. (AArch64_relocate_functions::adrp): Likewise. (AArch64_relocate_functions::movnz): Cast x to SignedW type when comparing x to 0. Calculate immed from ~x when x < 0. (Target_aarch64::optimize_tls_reloc): Add new cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC. (Target_aarch64::possible_function_pointer_reloc): Implement this method. (Target_aarch64::Scan::local_reloc_may_be_function_pointer): Update comment. (Target_aarch64::Scan::local): Add codes to handle STT_GNU_IFUNC symbol. Add cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC. (Target_aarch64::Scan::global): Add codes to handle STT_GNU_IFUNC symbol. Add cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC. (Target_aarch64::make_plt_entry): Call add_entry with two more parameters. (Target_aarch64::make_local_ifunc_plt_entry): New method. (Target_aarch64::Relocate::relocate): Add cases for LD_PREL_LO19, ADR_PREL_LO21, TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC. (Target_aarch64::Relocate::relocate_tls): Add cases for TLSLD_ADR_PAGE21, TLSLD_ADD_LO12_NC, TLSLD_MOVW_DTPREL_G1, TLSLD_MOVW_DTPREL_G0_NC. * testsuite/icf_safe_so_test.cc: Correct test comment. * testsuite/icf_safe_test.sh: Add AArch64 arch.
2014-10-17Add "typename" keyword to satisfy GCC 4.2.Cary Coutant1-1/+1
gold/ * aarch64.cc (AArch64_relocate_functions::maybe_apply_stub): Add "typename" keyword.
2014-10-15Here we have the patch for gold aarch64 backend to support relaxation.Han Shen1-39/+2124
In short relaxation is the linker's generation of stubs that fixes the out-of-range jumps/branches in the original object file. With this implementation, we are able to link a 456MB aarch64 application. Tested: 1) Build natively on x86_64 and aarch64 machines. 2) Pass unit tests regarding relaxation.
2014-09-17Add tls support to gold aarch64 backend.Jing Yu1-132/+1482
elfcpp/ChangeLog: 2014-09-17 Han Shen <shenhan@google.com> * aarch64.h (R_AARCH64_TLS_DTPREL64): Switch enum value with ... (R_AARCH64_TLS_DTPMOD64): ... enum value. gold/ChangeLog: 2014-09-17 Han Shen <shenhan@google.com> Jing Yu <jingyu@google.com> * aarch64-reloc.def: Add TLSGD_ADR_PAGE21, TLSGD_ADD_LO12_NC, TLSDESC_ADR_PAGE21, TLSDESC_LD64_LO12, TLSDESC_ADD_LO12, TLSDESC_CALL. * aarch64.cc (Target_aarch64): Add data members got_irelative_, got_tlsdesc_, rela_irelative_, got_mod_index_offset_, tlsdesc_reloc_info_, tls_base_symbol_defined_. Initialize them in constructor. (Target_aarch64::do_reloc_symbol_index): New method. (Target_aarch64::do_reloc_addend): New method. (Target_aarch64::add_tlsdesc_info): New method. (Target_aarch64::do_dynsym_value): New method. (Target_aarch64::do_make_data_plt): Add new parameters: got, got_irelative. Pass them to Output_data_plt_aarch64_standard. (Target_aarch64::make_data_plt): Add new parameters: got, got_irelative. Pass them to do_make_data_plt. (Target_aarch64::Relocate): Add skip_call_tls_get_addr_ variable. (Target_aarch64::Relocate:tls_gd_to_le): New method. (Target_aarch64::Relocate:tls_ie_to_le): New method. (Target_aarch64::Relocate:tls_desc_gd_to_le): New method. (Target_aarch64::Relocate:tls_desc_gd_to_ie): New method. (Target_aarch64::got_tlsdesc_section): New method. (Target_aarch64::make_local_ifunc_plt_entry): New method. (Target_aarch64::define_tls_base_symbol): New method. (Target_aarch64::reserve_tlsdesc_entries): New method. (Target_aarch64::got_mod_index_entry): New method. (Target_aarch64::rela_tlsdesc_section): New method. (Target_aarch64::rela_irelative_section): New method. (Target_aarch64::Tlsdesc_info): New struct. (Target_aarch64::got_section): Create .got.plt space for IRELATIVE relocations and tlsdesc relocations. (Target_aarch64::optimize_tls_reloc): Implement method. (Output_data_plt_aarch64): Add member variables: tlsdesc_rel_, got_, got_irelative_, irelative_count_, tlsdesc_got_offset_. Initialize them in constructor. (Output_data_plt_aarch64::reserve_tlsdesc_entry): New method. (Output_data_plt_aarch64::has_tlsdesc_entry): New method. (Output_data_plt_aarch64::get_tlsdesc_got_offset): New method. (Output_data_plt_aarch64::get_tlsdesc_plt_offset): New method. (Output_data_plt_aarch64::rela_tlsdesc): New method. (Output_data_plt_aarch64::rela_irelative): New method. (Output_data_plt_aarch64::entry_count): Count IRELATIVE relocations. (Output_data_plt_aarch64::first_plt_entry_offset): Add const attribute. (Output_data_plt_aarch64::get_plt_tlsdesc_entry_size): New method. (Output_data_plt_aarch64::fill_tlsdesc_entry): New method. (Output_data_plt_aarch64::do_get_plt_tlsdesc_entry_size): New method. (Output_data_plt_aarch64::do_fill_tlsdesc_entry): New method. (Output_data_plt_aarch64_standard): New member variables: plt_tlsdesc_entry_size, tlsdesc_plt_entry. (Output_data_plt_aarch64_standard::Output_data_plt_aarch64_standard): New parameter: got, got_irelative. (Output_data_plt_aarch64_standard::do_get_plt_entry_size): New method. (Output_data_plt_aarch64_standard::do_fill_tlsdesc_entry): New method. (Output_data_plt_aarch64::do_write): Replace got_address with gotplt_address. Add irelative_count_ to count. Write tlsdesc entry. (AArch64_relocate_functions::update_movnz): New method. (AArch64_relocate_functions): Correct format. (AArch64_relocate_functions::movnz): New method. (Target_aarch64::Scan::local): Correct format. Move r_sym, got to before the switch. Add new cases to switch. Check ie_to_le relaxation on tlsie relocations. Add code handling tlsgd tlsdesc cases. (Target_aarch64::Scan::global): Move arp to front. Do copy_reloc when needed. Add new cases to switch. Insert dynamic RELATIVE relocation when needed. Add code handling tlsgd, tlsie, tlsdesc cases. Call reloc_name_in_error_message to print unsupported reloc. (Target_aarch64::make_plt_section): Pass got_ and got_irelative_ to make_data_plt. (Target_aarch64::do_finalize_sections): Emit relocs to save COPY relocs. Fill in some more dynamic tags. (Target_aarch64::Relocate::relocate): Handle tlsgd, tlsdesc relocs. Skip call tls_get_addr when tlsgd is relaxed. (Target_aarch64::Relocate::relocate_tls): Correct format. Add code handling tlsgd, tlsdesc relocs, and tls gd->le, ie->le, tlsdesc->le, tlsdesc->ie relaxation.
2014-08-29The 3rd patch for aarch64 gold.Han Shen1-50/+591
This enables - 1. static linking hello world 2. limited support for TLSIE and TLSLE 3. limited support for linking shared library, linking executable against shared library. gold/ChangeLog 2014-08-29 Han Shen <shenhan@google.com> Jing Yu <jingyu@google.com> * aarch64-reloc-property.cc (AArch64_reloc_property_table::reloc_name_in_error_message): Fix bug in reference reloc property in the table. * aarch64-reloc.def: Add TLSLE reloc types and fix some errors in 3 other entries. * aarch64.cc: (Output_data_got_aarch64::add_static_reloc): 2 new overloaded methods. (Output_data_got_aarch64::do_write): Add code to write out static relocs. (class Output_data_got_aarch64::Static_reloc): New class to wrap static relocs. (Output_data_got_aarch64::static_relocs): New vector to hold static relocs. (Target_aarch64::TCB_SIZE): New const static memeber. (Target_aarch64::tcb_size): New method. (Target_aarch64::Relocate::relocate): Add code handling new reloc types. (Target_aarch64::Relocate::relocate_tls): New method. (Target_aarch64::Scan::local): Add code handling new reloc types. (Target_aarch64::Scan::global): Add code handling new reloc types.
2014-08-08gold aarch64 patch to enable linking hello_wolrd.Jing Yu1-149/+999
elfcpp/ChangeLog: 2014-08-08 Han Shen <shenhan@google.com> * aarch64.h (withdrawn): Replaced with R_AARCH64_withdrawn. 2014-08-08 Jing Yu <jingyu@google.com> Han Shen <shenhan@google.com> * Makefile.am (HFILES): Add aarch64-reloc-property.h. (DEFFILES): add aarch64-reloc.def. (TARGETSOURCES): Add aarch64-reloc-property.cc. (ALL_TARGETOBJS): Add aarch64-reloc-property.$(OBJEXT). * Makefile.in: Regenerate. * aarch64-reloc-property.cc: New file. * aarch64-reloc-property.h: New file. * aarch64-reloc.def: New file. * aarch64.cc: Include aarch64-reloc-property.h. Replace spaces with tab to make the format consistent. (Output_data_got_aarch64::symbol_table_): New method. (Target_aarch64::do_plt_address_for_global): New method. (Target_aarch64::do_plt_address_for_local): New method. (Target_aarch64::do_select_as_default_target): New method. (Target_aarch64::do_make_data_plt): New method. (Target_aarch64::make_data_plt): New method. (Output_data_plt_aarch64::has_irelative_section): New method. (Output_data_plt_aarch64::address_for_global): New method. (Output_data_plt_aarch64::address_for_local): New method. (Output_data_plt_aarch64::irelative_rel_): New parameter. (Output_data_plt_aarch64::add_entry): Implement contents. (Output_data_plt_aarch64::set_final_data_size): Fix typo. (Output_data_plt_aarch64::do_write): Remove useless got_base. Set the got_pov entry to plt0. (Output_data_plt_aarch64_standard::do_fill_first_plt_entry): Implement contents. (Output_data_plt_aarch64_standard::do_fill_plt_entry): Implement. (AArch64_howto): New struct. (aarch64_howto[]): New static const array. (AArch64_relocate_functions): New class. (Target_aarch64::Scan::get_reference_flags): Remove method. (Target_aarch64::Scan::local): Implement to support a few relocations. (Target_aarch64::Scan::global): Implement to support a few relocations. (Target_aarch64::make_plt_section): Implement contents. (Target_aarch64::make_plt_entry): Implement contents. (Target_aarch64::do_finalize_sections): Implement contents. (Target_aarch64::Relocate::relocate): Implement a few relocations. (Target_aarch64::relocate_section): Implement contents.
2014-07-022014-07-02 Jing Yu <jingyu@google.com>Jing Yu1-0/+1447
Initial patch to enable gold aarch64 backend. This patch is just a skeleton which almost does nothing. It does not support ILP32 now. gold/ChangeLog: * aarch64.cc: New file * Makefile.am (TARGETSOURCES): Add aarch64.cc (ALL_TARGETOBJS): Add aarch64.$(OBJEXT) * Makefile.in: Regenerate. * configure.tgt: Add entries for aarch64*. * configure.ac: Likewise. * configure: Likewise. elfcpp/ChangeLog: * aarch64.h: New file. New enums for aarch64-elf64 relocations. * elfcpp.h (EM_AARCH64, SHT_AARCH64_ATTRIBUTES, PT_AARCH64_ARCHEXT, PT_AARCH64_UNWIND): New enum constant.
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