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2013-01-16 Sriraman Tallam <tmsriram@google.com>

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* layout.cc (Layout::layout): Do not do default sorting for
	text sections when section ordering is specified.
	(make_output_section): Ditto.
	* testsuite/plugin_final_layout.cc: Name the function sections
	to catch reordering issues.
This commit is contained in:
Sriraman Tallam
2013-01-16 22:47:14 +00:00
parent 6a3e1baeae
commit 7c381248b3
3 changed files with 17 additions and 1 deletions
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8
gold/ChangeLog
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@ -1,3 +1,11 @@
2013-01-16 Sriraman Tallam <tmsriram@google.com>
* layout.cc (Layout::layout): Do not do default sorting for
text sections when section ordering is specified.
(make_output_section): Ditto.
* testsuite/plugin_final_layout.cc: Name the function sections
to catch reordering issues.
2013-01-15 Alan Modra <amodra@gmail.com> 2013-01-15 Alan Modra <amodra@gmail.com>
* powerpc.cc (Target_powerpc::do_relax): Default shared libs to * powerpc.cc (Target_powerpc::do_relax): Default shared libs to

2
gold/layout.cc
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@ -1150,6 +1150,7 @@ Layout::layout(Sized_relobj_file<size, big_endian>* object, unsigned int shndx,
// By default the GNU linker sorts some special text sections ahead // By default the GNU linker sorts some special text sections ahead
// of others. We are compatible. // of others. We are compatible.
if (!this->script_options_->saw_sections_clause() if (!this->script_options_->saw_sections_clause()
&& !this->is_section_ordering_specified()
&& !parameters->options().relocatable() && !parameters->options().relocatable()
&& Layout::special_ordering_of_input_section(name) >= 0) && Layout::special_ordering_of_input_section(name) >= 0)
os->set_must_sort_attached_input_sections(); os->set_must_sort_attached_input_sections();
@ -1646,6 +1647,7 @@ Layout::make_output_section(const char* name, elfcpp::Elf_Word type,
// need to know that this might happen before we attach any input // need to know that this might happen before we attach any input
// sections. // sections.
if (!this->script_options_->saw_sections_clause() if (!this->script_options_->saw_sections_clause()
&& !this->is_section_ordering_specified()
&& !parameters->options().relocatable() && !parameters->options().relocatable()
&& strcmp(name, ".text") == 0) && strcmp(name, ".text") == 0)
os->set_may_sort_attached_input_sections(); os->set_may_sort_attached_input_sections();

8
gold/testsuite/plugin_final_layout.cc
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@ -21,16 +21,22 @@
// MA 02110-1301, USA. // MA 02110-1301, USA.
// The goal of this program is to verify if section ordering // The goal of this program is to verify if section ordering
// via plugins happens correctly. // via plugins happens correctly. Also, test is plugin based ordering
// overrides default text section ordering where ".text.hot" sections
// are grouped. The plugin does not want foo and baz next to each other.
// Plugin section order is foo() followed by bar() and then baz().
__attribute__ ((section(".text._Z3barv")))
void bar () void bar ()
{ {
} }
__attribute__ ((section(".text.hot._Z3bazv")))
void baz () void baz ()
{ {
} }
__attribute__ ((section(".text.hot._Z3foov")))
void foo () void foo ()
{ {
} }