Re: [GOLD] Power7 thread safe plt call stubs

[Ian Lance Taylor <iant at google dot com>]

On Wed, Dec 5, 2012 at 5:01 AM, Alan Modra <amodra@gmail.com> wrote:
>
>         * options.h (General_options): Add plt_align, plt_static_chain,
>         plt_thread_safe.  Update stub_group_size help text.
>         * powerpc.cc (Target_powerpc::plt_thread_safe): New access function
>         for new plt_thread_safe_ var.
>         (use_plt_offset): Correct comments.
>         (Target_powerpc::do_relax): Look for thread creation symbols to
>         determine default plt_thread_safe value.  Clear plt call stubs
>         as well as branch stubs each iteration.
>         (add_2_2_11, add_12_12_11, bnectr_p4, cmpldi_2_0, xor_11_11_11): New
>         insn constants.
>         (l, hi, ha, write_insn): Move earlier.
>         (Stub_table): Delete prev_size, add last_plt_size and last_branch_size.
>         (Stub_table::clear_stubs): Rename from clear_long_branch_stubs, clear
>         plt stubs too.
>         (Stub_table::update_size): Adjust.
>         (Stub_table::prev_size, set_prev_size): Delete.
>         (Stub_table::stub_align): Let --plt-align affect result.
>         (Stub_table::plt_call_size): Calculate sizes for various stubs.
>         (Stub_table::branch_stub_size): Use last_plt_size in address calc.
>         (Stub_table::add_plt_call_stub): Pass iterator to plt_call_size.
>         (Stub_table::do_write): Support more stub variants.

This is OK.

Thanks.

Ian