From 9e69ed506afe4d59c5524ba74284bb972bb0f59b Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Thu, 6 Dec 2012 03:13:17 +0000 Subject: * 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. --- gold/options.h | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-) (limited to 'gold/options.h') diff --git a/gold/options.h b/gold/options.h index 50762a5..216620a 100644 --- a/gold/options.h +++ b/gold/options.h @@ -936,6 +936,18 @@ class General_options DEFINE_bool(pipeline_knowledge, options::ONE_DASH, '\0', false, NULL, N_("(ARM only) Ignore for backward compatibility")); + DEFINE_var(plt_align, options::TWO_DASHES, '\0', 0, "5", + N_("(PowerPC64 only) Align PLT call stubs to fit cache lines"), + N_("[=P2ALIGN]"), true, int, int, options::parse_uint); + + DEFINE_bool(plt_static_chain, options::TWO_DASHES, '\0', false, + N_("(PowerPC64 only) PLT call stubs should load r11"), + N_("(PowerPC64 only) PLT call stubs should not load r11")); + + DEFINE_bool(plt_thread_safe, options::TWO_DASHES, '\0', false, + N_("(PowerPC64 only) PLT call stubs with load-load barrier"), + N_("(PowerPC64 only) PLT call stubs without barrier")); + #ifdef ENABLE_PLUGINS DEFINE_special(plugin, options::TWO_DASHES, '\0', N_("Load a plugin library"), N_("PLUGIN")); @@ -1016,9 +1028,10 @@ class General_options N_("Strip LTO intermediate code sections"), NULL); DEFINE_int(stub_group_size, options::TWO_DASHES , '\0', 1, - N_("(ARM only) The maximum distance from instructions in a group " - "of sections to their stubs. Negative values mean stubs " - "are always after the group. 1 means using default size.\n"), + N_("(ARM, PowerPC only) The maximum distance from instructions " + "in a group of sections to their stubs. Negative values mean " + "stubs are always after (PowerPC before) the group. 1 means " + "use default size.\n"), N_("SIZE")); DEFINE_bool(no_keep_memory, options::TWO_DASHES, '\0', false, -- cgit v1.1