2019-08-01 10:20:55 +08:00
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2019-08-02 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Target_powerpc::Scan::get_reference_flags): Set
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flags for new relocations, and some missing older relocs.
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(Target_powerpc::Scan::local): Handle new pcrel tls relocs.
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Call set_has_static_tls for tprel relocs.
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(Target_powerpc::Scan::global): Likewise.
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(Target_powerpc::Relocate::relocate): Handle new pcrel tls relocs.
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2019-08-01 16:13:29 +08:00
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2019-08-02 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Powerpc_relocate_functions::rela, rela_ua): Perform
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signed right shift for signed overflow check.
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2019-07-04 22:39:08 +08:00
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2019-07-29 Martin Liska <mliska@suse.cz>
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PR 24768
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* layout.h (class Layout): Add is_lto_slim_object and
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set_lto_slim_object.
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* object.cc (struct lto_section): Add lto_slim_object_.
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(big_endian>::do_layout): Parse content of
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.gnu_lto_.lto section.
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(big_endian>::do_add_symbols): Report error for a missing
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LTO plugin.
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2019-06-27 08:05:15 +08:00
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2019-07-13 Alan Modra <amodra@gmail.com>
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* powerpc.cc (xlate_pcrel_opt): New function.
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(Target_powerpc::Relocate::relocate): Optimise PCREL34 and
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GOT_PCREL34 sequences marked with PCREL_OPT.
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2019-06-26 20:38:54 +08:00
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2019-07-13 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Powerpc_relobj::make_got_relative): New function.
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(relative_value_is_known): New functions.
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(Target_powerpc::Relocate::relocate): Edit code using
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GOT16_HA, GOT16_LO_DS, and GOT_PCREL34 relocs.
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[GOLD] PowerPC relocations for prefix insns
Also use pc-relative instructions for notoc stubs.
elfcpp/
* powerpc.h (R_PPC64_PCREL_OPT, R_PPC64_D34, R_PPC64_D34_LO),
(R_PPC64_D34_HI30, R_PPC64_D34_HA30, R_PPC64_PCREL34),
(R_PPC64_GOT_PCREL34, R_PPC64_PLT_PCREL34, R_PPC64_PLT_PCREL34_NOTOC),
(R_PPC64_ADDR16_HIGHER34, R_PPC64_ADDR16_HIGHERA34),
(R_PPC64_ADDR16_HIGHEST34, R_PPC64_ADDR16_HIGHESTA34),
(R_PPC64_REL16_HIGHER34, R_PPC64_REL16_HIGHERA34),
(R_PPC64_REL16_HIGHEST34, R_PPC64_REL16_HIGHESTA34),
(R_PPC64_D28, R_PPC64_PCREL28): Define.
gold/
* powerpc.cc (Target_powerpc): Add powerxx_stubs_ and accessor
functions.
(Target_powerpc::maybe_skip_tls_get_addr_call): Handle PLT_PCREL34
and PLT_PCREL34_NOTOC relocs.
(Powerpc_relocate_functions): Add addr34, addr34_hi, addr34_ha,
addr28, addr16_higher34, addr16_highera34, addr16_highest34,
addr16_highest34a functions.
(li_11_0, ori_11_11_0, sldi_11_11_34): Define.
(paddi_12_pc, pld_12_pc, pnop): Define.
(d34, ha34): New inline functions.
(Stub_table::add_plt_call_entry): Handle powerxx_stubs.
(Stub_table::add_eh_frame): Likewise.
(build_powerxx_offset): New function.
(Stub_table::plt_call_size): Handle powerxx_stubs.
(Stub_table::branch_stub_size): Likewise.
(Stub_table::do_write): Likewise.
(Target_powerpc::Scan::get_reference_flags): Handle new relocs.
(Target_powerpc::Scan::reloc_needs_plt_for_ifunc: Likewise.
(Target_powerpc::Scan::local, global, relocate): Likewise.
2019-06-03 10:18:43 +08:00
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2019-07-13 Alan Modra <amodra@gmail.com>
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* powerpc.cc (Target_powerpc): Add powerxx_stubs_ and accessor
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functions.
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(Target_powerpc::maybe_skip_tls_get_addr_call): Handle PLT_PCREL34
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and PLT_PCREL34_NOTOC relocs.
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(Powerpc_relocate_functions): Add addr34, addr34_hi, addr34_ha,
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addr28, addr16_higher34, addr16_highera34, addr16_highest34,
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addr16_highest34a functions.
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(li_11_0, ori_11_11_0, sldi_11_11_34): Define.
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(paddi_12_pc, pld_12_pc, pnop): Define.
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(d34, ha34): New inline functions.
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(Stub_table::add_plt_call_entry): Handle powerxx_stubs.
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(Stub_table::add_eh_frame): Likewise.
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(build_powerxx_offset): New function.
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(Stub_table::plt_call_size): Handle powerxx_stubs.
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(Stub_table::branch_stub_size): Likewise.
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(Stub_table::do_write): Likewise.
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(Target_powerpc::Scan::get_reference_flags): Handle new relocs.
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(Target_powerpc::Scan::reloc_needs_plt_for_ifunc: Likewise.
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(Target_powerpc::Scan::local, global, relocate): Likewise.
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[GOLD] PowerPC notoc eh_frame
When generating notoc call and branch stubs without the benefit of
pc-relative insns, the stubs need to use LR to access the run time PC.
All LR changes must be described in .eh_frame if we're to support
unwinding through asynchronous exceptions. That's what this patch
does.
The patch has gone through way too many iterations. At first I
attempted to add multiple FDEs, one for each stub. That ran into
difficulties with do_plt_fde_location which is only capable of setting
the address of a single FDE per Output_data section, and with removing
any FDEs added on a previous do_relax pass. Removing FDEs (git commit
be897fb774) went overboard in matching the FDE contents. That means
either stashing the contents created for add_eh_frame_for_plt to use
when calling remove_eh_frame_for_plt, or recreating contents on the
fly (*) just to remove FDEs. In fact, FDE content matching is quite
unnecesary. FDEs added by a previous do_relax pass are those with
u_.from_linker.post_map set. So they can easily be recognised just by
looking at that flag. This patch keeps that part of the multiple FDE
changes.
In the end I went for just one FDE per stub group to describe the call
stubs. That's reasonably efficient for the common case of only
needing to describe the __tls_get_addr_opt call stub. We don't expect
to be making many calls using notoc stubs without pc-relative insns.
*) Which has it's own set of problems. The contents must be recreated
using the old stub layout, but .eh_frame size can affect stub
requirements so you need to temporarily keep the old .eh_frame size
when creating new stubs, then reset .eh_frame size before adding new
FDEs.
* ehframe.cc (Fde::operator==): Delete.
(Cie::remove_fde): Delete.
(Eh_frame::remove_ehframe_for_plt): Delete fde_data and fde_length
parameters. Remove all post-map plt FDEs.
* ehframe.h (Fde:post_map): Make const, add variant to compare plt.
(Fde::operator==): Delete.
(Cie::remove_fde): Implement here.
(Cie::last_fde): New accessor.
(Eh_frame::remove_ehframe_for_plt): Update prototype.
* layout.cc (Layout::remove_eh_frame_for_plt): Delete fde_data and
fde_length parameters.
* layout.h (Layout::remove_eh_frame_for_plt): Update prototype.
* powerpc.cc (Stub_table::tls_get_addr_opt_bctrl_): Delete.
(Stub_table::plt_fde_len_, plt_fde_, init_plt_fde): Delete.
(Stub_table::add_plt_call_entry): Don't set tls_get_addr_opt_bctrl_.
(eh_advance): New function.
(stub_sort): New function.
(Stub_table::add_eh_frame): Emit eh_frame for notoc plt calls and
branches as well as __tls_get_addr_opt plt call stub.
(Stub_table::remove_eh_frame): Update to suit.
2019-07-01 13:07:49 +08:00
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2019-07-13 Alan Modra <amodra@gmail.com>
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* ehframe.cc (Fde::operator==): Delete.
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(Cie::remove_fde): Delete.
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(Eh_frame::remove_ehframe_for_plt): Delete fde_data and fde_length
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parameters. Remove all post-map plt FDEs.
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* ehframe.h (Fde:post_map): Make const, add variant to compare plt.
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(Fde::operator==): Delete.
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(Cie::remove_fde): Implement here.
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(Cie::last_fde): New accessor.
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(Eh_frame::remove_ehframe_for_plt): Update prototype.
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* layout.cc (Layout::remove_eh_frame_for_plt): Delete fde_data and
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fde_length parameters.
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* layout.h (Layout::remove_eh_frame_for_plt): Update prototype.
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* powerpc.cc (Stub_table::tls_get_addr_opt_bctrl_): Delete.
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(Stub_table::plt_fde_len_, plt_fde_, init_plt_fde): Delete.
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(Stub_table::add_plt_call_entry): Don't set tls_get_addr_opt_bctrl_.
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(eh_advance): New function.
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(stub_sort): New function.
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(Stub_table::add_eh_frame): Emit eh_frame for notoc plt calls and
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branches as well as __tls_get_addr_opt plt call stub.
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(Stub_table::remove_eh_frame): Update to suit.
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[GOLD] PowerPC64 ELFv2 notoc support
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.
2019-06-18 14:03:38 +08:00
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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 08:48:03 +08:00
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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 08:47:45 +08:00
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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 08:47:08 +08:00
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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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|
2019-06-07 13:36:52 +08:00
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|
2019-06-10 Martin Liska <mliska@suse.cz>
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* errors.h: Include string.
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2019-05-11 07:27:10 +08:00
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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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2019-02-20 08:12:44 +08:00
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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 21:22:42 +08:00
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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 20:59:20 +08:00
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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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2019-01-20 00:51:42 +08:00
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2019-01-19 Nick Clifton <nickc@redhat.com>
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* po/gold.pot: Regenerate.
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2019-01-19 23:55:50 +08:00
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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 11:21:08 +08:00
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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 18:31:27 +08:00
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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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2019-01-01 18:53:15 +08:00
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For older changes see ChangeLog-2018
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2016-01-01 18:44:31 +08:00
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2019-01-01 18:53:15 +08:00
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Copyright (C) 2019 Free Software Foundation, Inc.
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2016-01-01 18:44:31 +08:00
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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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