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-rw-r--r--gold/plugin.h75
1 files changed, 71 insertions, 4 deletions
diff --git a/gold/plugin.h b/gold/plugin.h
index 32f1bb7..c26414d 100644
--- a/gold/plugin.h
+++ b/gold/plugin.h
@@ -1,6 +1,6 @@
// plugin.h -- plugin manager for gold -*- C++ -*-
-// Copyright 2008, 2009, 2010 Free Software Foundation, Inc.
+// Copyright 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
// Written by Cary Coutant <ccoutant@google.com>.
// This file is part of gold.
@@ -36,12 +36,17 @@ namespace gold
class General_options;
class Input_file;
class Input_objects;
+class Archive;
+class Input_group;
+class Symbol;
class Symbol_table;
class Layout;
class Dirsearch;
class Mapfile;
+class Task;
class Task_token;
class Pluginobj;
+class Plugin_rescan;
// This class represents a single plugin library.
@@ -124,7 +129,8 @@ class Plugin_manager
public:
Plugin_manager(const General_options& options)
: plugins_(), objects_(), deferred_layout_objects_(), input_file_(NULL),
- plugin_input_file_(), in_replacement_phase_(false),
+ plugin_input_file_(), rescannable_(), undefined_symbols_(),
+ any_claimed_(false), in_replacement_phase_(false), any_added_(false),
options_(options), workqueue_(NULL), task_(NULL), input_objects_(NULL),
symtab_(NULL), layout_(NULL), dirpath_(NULL), mapfile_(NULL),
this_blocker_(NULL), extra_search_path_()
@@ -153,6 +159,16 @@ class Plugin_manager
Pluginobj*
claim_file(Input_file* input_file, off_t offset, off_t filesize);
+ // Let the plugin manager save an archive for later rescanning.
+ // This takes ownership of the Archive pointer.
+ void
+ save_archive(Archive*);
+
+ // Let the plugin manager save an input group for later rescanning.
+ // This takes ownership of the Input_group pointer.
+ void
+ save_input_group(Input_group*);
+
// Call the all-symbols-read handlers.
void
all_symbols_read(Workqueue* workqueue, Task* task,
@@ -160,6 +176,11 @@ class Plugin_manager
Layout* layout, Dirsearch* dirpath, Mapfile* mapfile,
Task_token** last_blocker);
+ // Tell the plugin manager that we've a new undefined symbol which
+ // may require rescanning.
+ void
+ new_undefined_symbol(Symbol*);
+
// Run deferred layout.
void
layout_deferred_objects();
@@ -245,9 +266,42 @@ class Plugin_manager
Plugin_manager(const Plugin_manager&);
Plugin_manager& operator=(const Plugin_manager&);
+ // Plugin_rescan is a Task which calls the private rescan method.
+ friend class Plugin_rescan;
+
+ // An archive or input group which may have to be rescanned if a
+ // plugin adds a new file.
+ struct Rescannable
+ {
+ bool is_archive;
+ union
+ {
+ Archive* archive;
+ Input_group* input_group;
+ } u;
+
+ Rescannable(Archive* archive)
+ : is_archive(true)
+ { this->u.archive = archive; }
+
+ Rescannable(Input_group* input_group)
+ : is_archive(false)
+ { this->u.input_group = input_group; }
+ };
+
typedef std::list<Plugin*> Plugin_list;
typedef std::vector<Pluginobj*> Object_list;
typedef std::vector<Relobj*> Deferred_layout_list;
+ typedef std::vector<Rescannable> Rescannable_list;
+ typedef std::vector<Symbol*> Undefined_symbol_list;
+
+ // Rescan archives for undefined symbols.
+ void
+ rescan(Task*);
+
+ // See whether the rescannable at index I defines SYM.
+ bool
+ rescannable_defines(size_t i, Symbol* sym);
// The list of plugin libraries.
Plugin_list plugins_;
@@ -265,11 +319,24 @@ class Plugin_manager
Input_file* input_file_;
struct ld_plugin_input_file plugin_input_file_;
- // TRUE after the all symbols read event; indicates that we are
- // processing replacement files whose symbols should replace the
+ // A list of archives and input groups being saved for possible
+ // later rescanning.
+ Rescannable_list rescannable_;
+
+ // A list of undefined symbols found in added files.
+ Undefined_symbol_list undefined_symbols_;
+
+ // Whether any input files have been claimed by a plugin.
+ bool any_claimed_;
+
+ // Set to true after the all symbols read event; indicates that we
+ // are processing replacement files whose symbols should replace the
// placeholder symbols from the Pluginobj objects.
bool in_replacement_phase_;
+ // Whether any input files or libraries were added by a plugin.
+ bool any_added_;
+
const General_options& options_;
Workqueue* workqueue_;
Task* task_;