gdb and binutils branch master updated. 9726c3c179e375cc0cc73a593adfaef8ed5735ab

[shenhan at sourceware dot org]

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https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=9726c3c179e375cc0cc73a593adfaef8ed5735ab

commit 9726c3c179e375cc0cc73a593adfaef8ed5735ab
Author: Han Shen <shenhan@google.com>
Date:   Wed Oct 29 11:28:46 2014 -0700

    Misc about gold for aarch64 backend.
    
    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.

-----------------------------------------------------------------------

Summary of changes:
 gold/ChangeLog                     |   60 ++++
 gold/aarch64-reloc.def             |   44 ++-
 gold/aarch64.cc                    |  688 +++++++++++++++++++++++++++++-------
 gold/testsuite/icf_safe_so_test.cc |    8 +-
 gold/testsuite/icf_safe_test.sh    |    2 +-
 5 files changed, 660 insertions(+), 142 deletions(-)


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