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Calls from notoc functions via the PLT need different stubs. Even calls to local functions requiring a valid toc pointer must go via a stub. This patch provides the support in gold. elfcpp/ * powerpc.h (R_PPC64_PLTSEQ_NOTOC, R_PPC64_PLTCALL_NOTOC): Define. gold/ * powerpc.cc (Target_powerpc::maybe_skip_tls_get_addr_call): Handle notoc calls. (is_branch_reloc): Template on size. Return true for REL24_NOTOC. Update all callers. (max_branch_delta): Likewise. (Target_powerpc::Branch_info::make_stub): Add a stub for notoc calls to functions needing a valid toc pointer. (Target_powerpc::do_relax): Layout stubs again if any need resize. (add_12_11_12, addi_12_11, addis_12_11, ldx_12_11_12, ori_12_12_0), (oris_12_12_0, sldi_12_12_32): Define. (Stub_table::Plt_stub_ent): Add notoc_ and iter_ fields. (Stub_table::Branch_stub_key, Branch_stub_key_hash): Rename from Branch_stub_ent and Branch_stub_ent hash. Remove save_res_ from key. (Stub_table::Branch_stub_ent): New struct. (class Stub_table): Add need_resize and resizing vars. (Stub_table::need_resize, branch_size): New accessors. (Stub_table::set_resizing): New function. (Stub_table::add_plt_call_entry): Handle notoc calls and resizing on seeing such or a tocsave stubs after a normal stub using the same sym. (Stub_table::add_long_branch_entry): Similarly. (Stub_table::find_long_branch_entry): Return a Branch_stub_ent*. (Stub_table::define_stub_syms): Adjust (Stub_table::build_tls_opt_head, build_tls_opt_tail): New functions. (build_notoc_offset): New function. (Stub_table::plt_call_size): Move out of line. Handle notoc calls. (Stub_table::branch_stub_size): Similarly. (Stub_table::do_write): Separate loop for ELFv2 stubs, handling notoc calls. Simplify ELFv1 loop. Output notoc branch stubs. Use build_tls_opt_head and build_tls_opt_tail. (Target_powerpc::Scan::get_reference_flags): Handle REL24_NOTOC. (Target_powerpc::Scan::reloc_needs_plt_for_ifunc): Likewise, and PLTSEQ_NOTOC and PLTCALL_NOTOC. (Target_powerpc::Scan::local, global, relocate): Likewise.
134 lines
4.9 KiB
Plaintext
134 lines
4.9 KiB
Plaintext
2019-07-13 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Target_powerpc::maybe_skip_tls_get_addr_call): Handle
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notoc calls.
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(is_branch_reloc): Template on size. Return true for REL24_NOTOC.
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Update all callers.
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(max_branch_delta): Likewise.
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(Target_powerpc::Branch_info::make_stub): Add a stub for notoc
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calls to functions needing a valid toc pointer.
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(Target_powerpc::do_relax): Layout stubs again if any need resize.
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(add_12_11_12, addi_12_11, addis_12_11, ldx_12_11_12, ori_12_12_0),
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(oris_12_12_0, sldi_12_12_32): Define.
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(Stub_table::Plt_stub_ent): Add notoc_ and iter_ fields.
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(Stub_table::Branch_stub_key, Branch_stub_key_hash): Rename from
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Branch_stub_ent and Branch_stub_ent hash. Remove save_res_ from key.
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(Stub_table::Branch_stub_ent): New struct.
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(class Stub_table): Add need_resize and resizing vars.
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(Stub_table::need_resize, branch_size): New accessors.
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(Stub_table::set_resizing): New function.
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(Stub_table::add_plt_call_entry): Handle notoc calls and resizing
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on seeing such or a tocsave stubs after a normal stub using the
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same sym.
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(Stub_table::add_long_branch_entry): Similarly.
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(Stub_table::find_long_branch_entry): Return a Branch_stub_ent*.
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(Stub_table::define_stub_syms): Adjust
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(Stub_table::build_tls_opt_head, build_tls_opt_tail): New functions.
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(build_notoc_offset): New function.
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(Stub_table::plt_call_size): Move out of line. Handle notoc calls.
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(Stub_table::branch_stub_size): Similarly.
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(Stub_table::do_write): Separate loop for ELFv2 stubs, handling
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notoc calls. Simplify ELFv1 loop. Output notoc branch stubs.
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Use build_tls_opt_head and build_tls_opt_tail.
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(Target_powerpc::Scan::get_reference_flags): Handle REL24_NOTOC.
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(Target_powerpc::Scan::reloc_needs_plt_for_ifunc): Likewise,
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and PLTSEQ_NOTOC and PLTCALL_NOTOC.
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(Target_powerpc::Scan::local, global, relocate): Likewise.
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2019-06-28 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Target_powerpc::Relocate::relocate): Don't look
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at next/previous reloc when relnum is -1.
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2019-06-28 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Stub_table::plt_error): New function.
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(Stub_table::do_write): Use it.
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(Output_data_glink::do_write): Don't segfault emitting linkage
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table error.
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2019-06-28 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Target_powerpc::Scan::get_reference_flags): Handle
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REL16_HIGH* relocs.
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(Target_powerpc::Scan::local): Likewise.
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(Target_powerpc::Scan::global): Likewise.
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(Target_powerpc::Relocate::relocate): Likewise.
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2019-06-10 Martin Liska <mliska@suse.cz>
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* errors.h: Include string.
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2019-05-10 Joshua Oreman <oremanj@hudson-trading.com>
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PR gold/21066
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* gc.h (gc_process_relocs): Track relocations in .eh_frame sections
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when ICF is enabled, even though the .eh_frame sections themselves
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are not foldable.
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* icf.cc (get_section_contents): Change arguments to permit operation
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on just part of a section. Include extra identity regions in the
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referring section's contents recursively.
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(match_sections): Lock object here instead of in get_section_contents
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so that get_section_contents can operate recursively.
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(Icf::add_ehframe_links): New method.
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(Icf::find_identical_sections): Pass .eh_frame sections to
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add_ehframe_links(). Increase default iteration count from 2 to 3
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because handling exception info typically requires one extra iteration.
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* icf.h (Icf::extra_identity_list_): New data member with accessor.
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(is_section_foldable_candidate): Include .gcc_except_table sections.
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* options.h: Update documentation for new default ICF iteration count.
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* testsuite/Makefile.am (icf_test_pr21066): New test case.
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* testsuite/Makefile.in: Regenerate.
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* testsuite/icf_test_pr21066.cc: New source file.
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* testsuite/icf_test_pr21066.sh: New test script.
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2019-02-19 Egeyar Bagcioglu <egeyar.bagcioglu@oracle.com>
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PR gold/23870
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* aarch64.cc (Target_aarch64::Scan::global): Check if a symbol with
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R_AARCH64_MOVW_.ABS_* relocations requires a PLT entry.
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* testsuite/Makefile.am: Add aarch64_pr23870 test case.
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* testsuite/Makefile.in: Regenerate.
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* testsuite/aarch64_pr23870_bar.c: New file.
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* testsuite/aarch64_pr23870_foo.c: New file.
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* testsuite/aarch64_pr23870_main.S: New file.
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2019-02-12 Nick Clifton <nickc@redhat.com>
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* po/fr.po: Updated French translation.
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2019-01-21 Nick Clifton <nickc@redhat.com>
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* po/uk.po: Updated Ukranian translation.
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2019-01-19 Nick Clifton <nickc@redhat.com>
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* po/gold.pot: Regenerate.
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2018-06-24 Nick Clifton <nickc@redhat.com>
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2.32 branch created.
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2019-01-09 Andrew Paprocki <andrew@ishiboo.com>
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* configure: Regenerate.
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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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