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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.h
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.h')
-rw-r--r--gold/symtab.h3
1 files changed, 2 insertions, 1 deletions
diff --git a/gold/symtab.h b/gold/symtab.h
index d186cc1..d1cd647 100644
--- a/gold/symtab.h
+++ b/gold/symtab.h
@@ -533,7 +533,7 @@ class Symbol
// Return true if this symbol is a function that needs a PLT entry.
// If the symbol is defined in a dynamic object or if it is subject
// to pre-emption, we need to make a PLT entry. If we're doing a
- // static link, we don't create PLT entries.
+ // static link or a -pie link, we don't create PLT entries.
bool
needs_plt_entry() const
{
@@ -542,6 +542,7 @@ class Symbol
return false;
return (!parameters->doing_static_link()
+ && !parameters->options().pie()
&& this->type() == elfcpp::STT_FUNC
&& (this->is_from_dynobj()
|| this->is_undefined()