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authorIan Lance Taylor <ian@airs.com>2009-10-14 05:25:02 +0000
committerIan Lance Taylor <ian@airs.com>2009-10-14 05:25:02 +0000
commit374ad2854b4a69a0efdb29f8f1122b4472e8055b (patch)
treebdef35b60f15322094f5a6c77b05bfa2416dc074 /gold/symtab.cc
parentfc1ed737279ecd7ab047b583a411e626a678207d (diff)
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Add support for -pie.
* options.h (class General_options): Add -pie and --pic-executable. (General_options::output_is_position_independent): Test -pie. (General_options::output_is_executable): Return true if not shared and not relocatable. (General_options::output_is_pie): Remove. * options.cc (General_options::finalize): Reject incompatible uses of -pie. * gold.cc (queue_middle_tasks): A -pie link is not static. * symtab.h (Symbol::needs_plt_entry): Return false if -pie. * symtab.cc (Symbol::final_value_is_known): Return false if output_is_position_independent. * layout.cc (Layout::set_segment_offsets): Start at address 0 if output_is_position_independent. * output.cc (Output_file_header::do_sized_write): Use ET_DYN if output_is_position_independent. * i386.cc (Output_data_plt_i386::do_write): Use the PIC PLT if output_is_position_independent. * testsuite/Makefile.am (check_PROGRAMS): Add basic_pie_test and two_file_pie_test. (basic_pie_test.o, basic_pie_test): New targets. (two_file_test_1_pie.o, two_file_test_1b_pie.o): New targets. (two_file_test_2_pie.o, two_file_test_main_pie.o): New targets. (two_file_pie_test): New target. * testsuite/Makefile.in: Rebuild. * README: Remove note saying that -pie is not supported.
Diffstat (limited to 'gold/symtab.cc')
-rw-r--r--gold/symtab.cc3
1 files changed, 2 insertions, 1 deletions
diff --git a/gold/symtab.cc b/gold/symtab.cc
index 6d5038f..5dbab35 100644
--- a/gold/symtab.cc
+++ b/gold/symtab.cc
@@ -394,7 +394,8 @@ Symbol::final_value_is_known() const
{
// If we are not generating an executable, then no final values are
// known, since they will change at runtime.
- if (parameters->options().shared() || parameters->options().relocatable())
+ if (parameters->options().output_is_position_independent()
+ || parameters->options().relocatable())
return false;
// If the symbol is not from an object file, and is not undefined,