Non-SFI mode: Add Linux asynchronous signal support

tests/nonsfi/nacl.scons

Index: tests/nonsfi/nacl.scons
diff --git a/tests/nonsfi/nacl.scons b/tests/nonsfi/nacl.scons
index 52fe7f01f591b20c80f1c5d27ea8e1410e6e4ca5..a4167040469374154de630f23dd0491b5c993f5a 100644
--- a/tests/nonsfi/nacl.scons
+++ b/tests/nonsfi/nacl.scons
@@ -26,6 +26,16 @@ env.AddNodeToTestSuite(node, ['small_tests'], 'run_icache_test',
 if env.Bit('tests_use_irt'):

[Mark Seaborn, 2015/07/16 23:21:16]

By putting the test after this, you're not testing the interface that the IRT
provides.

You actually want to declare your test inside an "if env.Bit('tests_use_irt')"
block.

[Luis Héctor Chávez, 2015/07/20 18:13:47]

Done.

   Return()
 
+# Tests sending and receiving userspace signals.
+nexe = env.ComponentProgram('user_async_signal_test',
+                            'user_async_signal_test.cc',
+                            EXTRA_LIBS=['${NONIRT_LIBS}',
+                                        '${EXCEPTION_LIBS}'])
+node = env.CommandSelLdrTestNacl('user_async_signal_test.out', nexe,
+                                 sel_ldr_flags=['-S'], exit_status='0',

[Mark Seaborn, 2015/07/16 23:21:17]

These args shouldn't be needed

[Luis Héctor Chávez, 2015/07/20 18:13:47]

Done.

+                                 using_nacl_signal_handler=True)

[Mark Seaborn, 2015/07/16 23:21:16]

Ditto

[Luis Héctor Chávez, 2015/07/20 18:13:47]

Done.

+env.AddNodeToTestSuite(node, ['small_tests'], 'run_user_async_signal_test')
+
 nexe = env.ComponentProgram('fcntl_test',
                             'fcntl_test.cc',
                             EXTRA_LIBS=['${NONIRT_LIBS}'])