commit 23872463d2fddc3e4cab160ab84f7fddc7f82539
Author: Viatcheslav Ostapenko <sl.ostapenko@samsung.com>
Date:   Mon Mar 10 17:48:11 2014 -0400

    Add --dynamic-list-only option to gold linker.

diff --git a/gold/options.cc b/gold/options.cc
index 000e6d0..1d2b027 100644
--- a/gold/options.cc
+++ b/gold/options.cc
@@ -1277,6 +1277,11 @@ General_options::finalize()
   if (this->user_set_rosegment_gap())
     this->set_rosegment(true);
 
+  if (this->dynamic_list_only()
+      && (!this->dynamic_list_.version_script_info()
+          || this->dynamic_list_.version_script_info()->empty())) {
+    gold_fatal(_("--dynamic_list_only requires dynamic list"));
+  }
   // FIXME: we can/should be doing a lot more sanity checking here.
 }
 
diff --git a/gold/options.h b/gold/options.h
index a2f5a88..91c5619 100644
--- a/gold/options.h
+++ b/gold/options.h
@@ -764,6 +764,9 @@ class General_options
   DEFINE_special(dynamic_list, options::TWO_DASHES, '\0',
 		 N_("Read a list of dynamic symbols"), N_("FILE"));
 
+  DEFINE_bool(dynamic_list_only, options::TWO_DASHES, '\0', false,
+        N_("Export only symbols found in dynamic list"), NULL);
+
   DEFINE_string(entry, options::TWO_DASHES, 'e', NULL,
 		N_("Set program start address"), N_("ADDRESS"));
 
diff --git a/gold/symtab.cc b/gold/symtab.cc
index 2e17529..0d73dd7 100644
--- a/gold/symtab.cc
+++ b/gold/symtab.cc
@@ -367,12 +367,12 @@ Symbol::should_add_dynsym_entry(Symbol_table* symtab) const
   // or an --export-dynamic-symbol option, add it.
   if (!this->is_from_dynobj()
       && (parameters->options().in_dynamic_list(this->name())
-	  || parameters->options().is_export_dynamic_symbol(this->name())))
+    || parameters->options().is_export_dynamic_symbol(this->name())))
     {
       if (!this->is_forced_local())
         return true;
       gold_warning(_("Cannot export local symbol '%s'"),
-		   this->demangled_name().c_str());
+        this->demangled_name().c_str());
       return false;
     }
 
@@ -418,6 +418,10 @@ Symbol::should_add_dynsym_entry(Symbol_table* symtab) const
         free(demangled_name);
     }
 
+  // Don't export other symbols if dynamic list only option specified
+  if (parameters->options().dynamic_list_only())
+    return false;
+
   // 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.
diff --git a/gold/testsuite/Makefile.am b/gold/testsuite/Makefile.am
index 0d40e3f..342bba1 100644
--- a/gold/testsuite/Makefile.am
+++ b/gold/testsuite/Makefile.am
@@ -1465,6 +1465,16 @@ dynamic_list: basic_test.o gcctestdir/ld $(srcdir)/dynamic_list.t
 dynamic_list.stdout: dynamic_list
 	$(TEST_READELF) -W --dyn-syms dynamic_list > dynamic_list.stdout
 
+check_SCRIPTS += dynamic_list_only.sh
+check_DATA += dynamic_list_only.stdout
+MOSTLYCLEANFILES += dynamic_list_only dynamic_list_only.stdout
+dynamic_list_only: basic_test.o gcctestdir/ld $(srcdir)/dynamic_list.t
+	$(CXXLINK) -Bgcctestdir/ basic_test.o \
+	  -Wl,--dynamic-list $(srcdir)/dynamic_list.t \
+	  -Wl,--dynamic-list-only
+dynamic_list_only.stdout: dynamic_list_only
+	$(TEST_READELF) -W --dyn-syms dynamic_list_only > dynamic_list_only.stdout
+
 check_PROGRAMS += thin_archive_test_1
 MOSTLYCLEANFILES += libthin1.a libthin3.a libthinall.a \
 	alt/thin_archive_test_2.o alt/thin_archive_test_4.o \
diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index 07bb534..70f748a 100644
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -102,7 +102,8 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_6.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_7.sh \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_8.sh \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_9.sh dynamic_list.sh
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_9.sh dynamic_list.sh \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	dynamic_list_only.sh
 
 # Create the data files that debug_msg.sh analyzes.
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_3 = incremental_test.stdout \
@@ -272,7 +273,8 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_7.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_8.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_9.stdout \
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	dynamic_list.stdout
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	dynamic_list.stdout \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	dynamic_list_only.stdout
 @GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_30 = debug_msg_so.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	debug_msg_ndebug.err \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	undef_symbol.err \
@@ -285,6 +287,8 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_6 script_test_7 \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	script_test_8 script_test_9 \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	dynamic_list dynamic_list.stdout \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	dynamic_list_only \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	dynamic_list_only.stdout \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	libthin1.a libthin3.a \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	libthinall.a \
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	alt/thin_archive_test_2.o \
@@ -3855,6 +3859,8 @@ script_test_9.sh.log: script_test_9.sh
 	@p='script_test_9.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 dynamic_list.sh.log: dynamic_list.sh
 	@p='dynamic_list.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
+dynamic_list_only.sh.log: dynamic_list_only.sh
+	@p='dynamic_list_only.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 plugin_test_1.sh.log: plugin_test_1.sh
 	@p='plugin_test_1.sh'; $(am__check_pre) $(LOG_COMPILE) "$$tst" $(am__check_post)
 plugin_test_2.sh.log: plugin_test_2.sh
@@ -4960,6 +4966,12 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	  -Wl,--dynamic-list-cpp-typeinfo
 @GCC_TRUE@@NATIVE_LINKER_TRUE@dynamic_list.stdout: dynamic_list
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_READELF) -W --dyn-syms dynamic_list > dynamic_list.stdout
+@GCC_TRUE@@NATIVE_LINKER_TRUE@dynamic_list_only: basic_test.o gcctestdir/ld $(srcdir)/dynamic_list.t
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ basic_test.o \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	  -Wl,--dynamic-list $(srcdir)/dynamic_list.t \
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	  -Wl,--dynamic-list-only
+@GCC_TRUE@@NATIVE_LINKER_TRUE@dynamic_list_only.stdout: dynamic_list_only
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_READELF) -W --dyn-syms dynamic_list_only > dynamic_list_only.stdout
 
 @GCC_TRUE@@NATIVE_LINKER_TRUE@libthin1.a: thin_archive_test_1.o alt/thin_archive_test_2.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	rm -f $@
diff --git a/gold/testsuite/dynamic_list_only.sh b/gold/testsuite/dynamic_list_only.sh
new file mode 100755
index 0000000..1a4a284
--- /dev/null
+++ b/gold/testsuite/dynamic_list_only.sh
@@ -0,0 +1,60 @@
+#!/bin/sh
+
+# dynamic_list_.sh -- test --dynamic-list and --dynamic-list-only
+
+# Copyright 2014 Free Software Foundation, Inc.
+# Written by Viatcheslav Ostapenko <sl.ostapenko@samsung.com>.
+
+# This file is part of gold.
+
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3 of the License, or
+# (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+# MA 02110-1301, USA.
+
+# This file goes with dynamic_list.t, which is a dynamic-list script.
+
+check()
+{
+    if ! grep -qw "$2" "$1"
+    then
+	echo "Did not find expected text in $1:"
+	echo "   $2"
+	echo ""
+	echo "Actual output below:"
+	cat "$1"
+	exit 1
+    fi
+}
+
+check_missing()
+{
+    if grep -qw "$2" "$1"
+    then
+	echo "Found text expected to be missing in $1:"
+	echo "   $2"
+	echo ""
+	echo "Actual output below:"
+	cat "$1"
+	exit 1
+    fi
+}
+
+check dynamic_list_only.stdout "main"            # comes via --dynamic-list
+check dynamic_list_only.stdout "_Z4t1_6v"        # t1_6()
+check dynamic_list_only.stdout "_ZN4t16aC2Ev"    # t16a:t16a()
+check dynamic_list_only.stdout "_ZN4t16aD1Ev"    # t16a:~t16a()
+check dynamic_list_only.stdout "_ZN4t16a1tEv"    # t16a:t()
+
+# excluded by --dynamic-list-only
+check_missing dynamic_list_only.stdout "_ZdlPv"          # "operator delete(void*)"