2011-07-13 Sriraman Tallam <tmsriram@google.com>

	* plugin-api.h
	(ld_plugin_section): New struct.
	(ld_plugin_get_section_count): New typedef.
	(ld_plugin_get_section_type): New typedef.
	(ld_plugin_get_section_name): New typedef.
	(ld_plugin_get_section_contents): New typedef.
	(ld_plugin_update_section_order): New typedef.
	(ld_plugin_allow_section_ordering): New typedef.
	(LDPT_GET_SECTION_COUNT): New enum value.
	(LDPT_GET_SECTION_TYPE): New enum value.
	(LDPT_GET_SECTION_NAME): New enum value.
	(LDPT_GET_SECTION_CONTENTS): New enum value.
	(LDPT_UPDATE_SECTION_ORDER): New enum value.
	(LDPT_ALLOW_SECTION_ORDERING): New enum value.
	(tv_get_section_count): New struct members.
	(tv_get_section_type): New struct members.
	(tv_get_section_name): New struct members.
	(tv_get_section_contents): New struct members.
	(tv_update_section_order): New struct members.
	(tv_allow_section_ordering): New struct members.
	* archive.cc (Archive::get_elf_object_for_member): Add extra parameter
	to claim_file call.
	* layout.cc (Layout::Layout): Initialize section_ordering_specified_,
	input_section_position_, and input_section_glob_.
	(read_layout_from_file): Call function section_ordering_specified.
	* layout.h (is_section_ordering_specified): New function.
	(section_ordering_specified): New function.
	(section_ordering_specified_): New boolean member.
	* main.cc(main): Call load_plugins after layout object is defined.
	* output.cc (Output_section::add_input_section): Use
	function section_ordering_specified to check if section ordering is
	needed.
	* output.cc (Output_section::add_relaxed_input_section): Use
	function section_ordering_specified to check if section ordering is
	needed.
	(Output_section::update_section_layout): New function.
	(Output_section::sort_attached_input_sections): Check if input section
	must be reordered.
	* output.h (Output_section::update_section_layout): New function.
	* plugin.cc (get_section_count): New function.
	(get_section_type): New function.
	(get_section_name): New function.
	(get_section_contents): New function.
	(update_section_order): New function.
	(allow_section_ordering): New function.
	(Plugin::load): Add the new interfaces to the transfer vector.
	(Plugin_manager::load_plugins): New parameter.
	(Plugin_manager::all_symbols_read): New parameter.
	(Plugin_manager::claim_file): New parameter. Save the elf object for
	unclaimed objects.
	(Plugin_manager::get_elf_object): New function.
	(Plugin_manager::get_view): Change to directly use the bool to check
	if get_view is called from claim_file_hook.
	* plugin.h (input_objects): New function
	(Plugin__manager::load_plugins): New parameter.
	(Plugin_manager::claim_file): New parameter.
	(Plugin_manager::get_elf_object): New function.
	(Plugin_manager::in_claim_file_handler): New function.
	(Plugin_manager::in_claim_file_handler_): New member.
	(layout): New function.
	* readsyms.cc (Read_symbols::do_read_symbols): Call the claim_file
	handler with an extra parameter. Make the elf object before calling
	claim_file handler.
	* testsuite/plugin_test.c (get_section_count): New function pointer.
	(get_section_type): New function pointer.
	(get_section_name): New function pointer.
	(get_section_contents): New function pointer.
	(update_section_order): New function pointer.
	(allow_section_ordering): New function pointer.
	(onload): Check if the new interfaces exist.

1 files changed, 29 insertions, 6 deletions

diff --git a/gold/plugin.h b/gold/plugin.h
index 2ee0b5e..8f1db67 100644
--- a/gold/plugin.h
+++ b/gold/plugin.h
@@ -131,6 +131,7 @@ class Plugin_manager
     : plugins_(), objects_(), deferred_layout_objects_(), input_file_(NULL),
       plugin_input_file_(), rescannable_(), undefined_symbols_(),
       any_claimed_(false), in_replacement_phase_(false), any_added_(false),
+      in_claim_file_handler_(false),
       options_(options), workqueue_(NULL), task_(NULL), input_objects_(NULL),
       symtab_(NULL), layout_(NULL), dirpath_(NULL), mapfile_(NULL),
       this_blocker_(NULL), extra_search_path_()
@@ -153,11 +154,22 @@ class Plugin_manager
 
   // Load all plugin libraries.
   void
-  load_plugins();
+  load_plugins(Layout* layout);
 
   // Call the plugin claim-file handlers in turn to see if any claim the file.
   Pluginobj*
-  claim_file(Input_file* input_file, off_t offset, off_t filesize);
+  claim_file(Input_file* input_file, off_t offset, off_t filesize,
+             Object* elf_object);
+
+  // Get the object associated with the handle and check if it is an elf object.
+  // If it is not a Pluginobj, it is an elf object.
+  Object*
+  get_elf_object(const void* handle);
+
+  // True if the claim_file handler of the plugins is being called.
+  bool
+  in_claim_file_handler()
+  { return in_claim_file_handler_; }
 
   // Let the plugin manager save an archive for later rescanning.
   // This takes ownership of the Archive pointer.
@@ -173,7 +185,7 @@ class Plugin_manager
   void
   all_symbols_read(Workqueue* workqueue, Task* task,
                    Input_objects* input_objects, Symbol_table* symtab,
-                   Layout* layout, Dirsearch* dirpath, Mapfile* mapfile,
+                   Dirsearch* dirpath, Mapfile* mapfile,
                    Task_token** last_blocker);
 
   // Tell the plugin manager that we've a new undefined symbol which
@@ -218,8 +230,8 @@ class Plugin_manager
   Pluginobj*
   make_plugin_object(unsigned int handle);
 
-  // Return the Pluginobj associated with the given HANDLE.
-  Pluginobj*
+  // Return the object associated with the given HANDLE.
+  Object*
   object(unsigned int handle) const
   {
     if (handle >= this->objects_.size())
@@ -265,6 +277,14 @@ class Plugin_manager
   in_replacement_phase() const
   { return this->in_replacement_phase_; }
 
+  Input_objects*
+  input_objects() const
+  { return this->input_objects_; }
+
+  Layout*
+  layout()
+  { return this->layout_; }
+
  private:
   Plugin_manager(const Plugin_manager&);
   Plugin_manager& operator=(const Plugin_manager&);
@@ -293,7 +313,7 @@ class Plugin_manager
   };
 
   typedef std::list<Plugin*> Plugin_list;
-  typedef std::vector<Pluginobj*> Object_list;
+  typedef std::vector<Object*> Object_list;
   typedef std::vector<Relobj*> Deferred_layout_list;
   typedef std::vector<Rescannable> Rescannable_list;
   typedef std::vector<Symbol*> Undefined_symbol_list;
@@ -340,6 +360,9 @@ class Plugin_manager
   // Whether any input files or libraries were added by a plugin.
   bool any_added_;
 
+  // Set to true when the claim_file handler of a plugin is called.
+  bool in_claim_file_handler_;
+
   const General_options& options_;
   Workqueue* workqueue_;
   Task* task_;