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Add support for -pie.

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* 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.
This commit is contained in:
Ian Lance Taylor
2009-10-14 05:25:02 +00:00
parent fc1ed73727
commit 374ad2854b
12 changed files with 129 additions and 28 deletions
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2
gold/layout.cc
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@@ -2144,7 +2144,7 @@ Layout::set_segment_offsets(const Target* target, Output_segment* load_seg,
uint64_t addr;
if (parameters->options().user_set_Ttext())
addr = parameters->options().Ttext();
else if (parameters->options().shared())
else if (parameters->options().output_is_position_independent())
addr = 0;
else
addr = target->default_text_segment_address();