* options.cc (General_options::parse_dynamic_list): New function.

	* options.h (General_options): New flags dynamic_list,
	dynamic_list_data, dynamic_list_cpp_new, and
	dynamic_list_cpp_typeinfo.  New variable dynamic_list_.
	(General_options::in_dynamic_list): New function.
	* script.cc (Lex::Mode): New enum DYNAMIC_LIST.
	(Lex::can_start_name): Add support for DYNAMIC_LIST mode.
	(Lex::can_continue_name): Likewise.
	(yylex): Likewise.
	(read_script_file): New parameter script_options.
	(read_dynamic_list): New function.
	(Script_options::define_dynamic_list): New function.
	(dynamic_list_keyword_parsecodes): New variable.
	(dynamic_list_keywords): New variable.
	* script.h (Script_options::define_dynamic_list): New function
	prototype.
	(read_dynamic_list): New function prototype.
	* symtab.cc (strprefix): New macro.
	(Symbol::should_add_dynsym_entry): Support dynamic_list,
	dynamic_list_data, dynamic_list_cpp_new, and
	dynamic_list_cpp_typeinfo.
	* yyscript.y (PARSING_DYNAMIC_LIST): New token.
	(dynamic_list_expr): New rule.
	(dynamic_list_nodes): Likewise.
	(dynamic_list_node): Likewise.
	* testsuite/Makefile.am (dynamic_list): New test.
	* testsuite/Makefile.in: Regenerated.
	* testsuite/dynamic_list.t: New file.
	* testsuite/dynamic_list.sh: New file.

1 files changed, 46 insertions, 0 deletions

diff --git a/gold/symtab.cc b/gold/symtab.cc
index c2de3bc..90ddfae 100644
--- a/gold/symtab.cc
+++ b/gold/symtab.cc
@@ -37,6 +37,7 @@
 #include "target.h"
 #include "workqueue.h"
 #include "symtab.h"
+#include "demangle.h"   // needed for --dynamic-list-cpp-new
 #include "plugin.h"
 
 namespace gold
@@ -288,6 +289,9 @@ Sized_symbol<size>::allocate_common(Output_data* od, Value_type value)
   this->value_ = value;
 }
 
+// The ""'s around str ensure str is a string literal, so sizeof works.
+#define strprefix(var, str)   (strncmp(var, str, sizeof("" str "") - 1) == 0)
+
 // Return true if this symbol should be added to the dynamic symbol
 // table.
 
@@ -302,6 +306,48 @@ Symbol::should_add_dynsym_entry() const
   if (this->is_forced_local())
     return false;
 
+  // If the symbol was forced dynamic in a --dynamic-list file, add it.
+  if (parameters->options().in_dynamic_list(this->name()))
+    return true;
+
+  // If dynamic-list-data was specified, add any STT_OBJECT.
+  if (parameters->options().dynamic_list_data()
+      && !this->is_from_dynobj()
+      && this->type() == elfcpp::STT_OBJECT)
+    return true;
+
+  // If --dynamic-list-cpp-new was specified, add any new/delete symbol.
+  // If --dynamic-list-cpp-typeinfo was specified, add any typeinfo symbols.
+  if ((parameters->options().dynamic_list_cpp_new()
+       || parameters->options().dynamic_list_cpp_typeinfo())
+      && !this->is_from_dynobj())
+    {
+      // TODO(csilvers): We could probably figure out if we're an operator
+      //                 new/delete or typeinfo without the need to demangle.
+      char* demangled_name = cplus_demangle(this->name(),
+                                            DMGL_ANSI | DMGL_PARAMS);
+      if (demangled_name == NULL)
+        {
+          // Not a C++ symbol, so it can't satisfy these flags
+        }
+      else if (parameters->options().dynamic_list_cpp_new()
+               && (strprefix(demangled_name, "operator new")
+                   || strprefix(demangled_name, "operator delete")))
+        {
+          free(demangled_name);
+          return true;
+        }
+      else if (parameters->options().dynamic_list_cpp_typeinfo()
+               && (strprefix(demangled_name, "typeinfo name for")
+                   || strprefix(demangled_name, "typeinfo for")))
+        {
+          free(demangled_name);
+          return true;
+        }
+      else
+        free(demangled_name);
+    }
+
   // If exporting all symbols or building a shared library,
   // and the symbol is defined in a regular object and is
   // externally visible, we need to add it.