S390: Initial test changes and files checkin.

test/cctest/test-sampler-api.cc

Index: test/cctest/test-sampler-api.cc
diff --git a/test/cctest/test-sampler-api.cc b/test/cctest/test-sampler-api.cc
index 2cc15f816a84fd9862e45d8c27e8e7eea5cc5570..e2c1c25638ba46fad1b23ec262bb95568ef501e0 100644
--- a/test/cctest/test-sampler-api.cc
+++ b/test/cctest/test-sampler-api.cc
@@ -71,6 +71,12 @@ class SimulatorHelper {
         simulator_->get_register(v8::internal::Simulator::sp));
     state->fp = reinterpret_cast<void*>(
         simulator_->get_register(v8::internal::Simulator::fp));
+#elif V8_TARGET_ARCH_S390 || V8_TARGET_ARCH_S390X
+    state->pc = reinterpret_cast<void*>(simulator_->get_pc());
+    state->sp = reinterpret_cast<void*>(
+        simulator_->get_register(v8::internal::Simulator::sp));
+    state->fp = reinterpret_cast<void*>(
+        simulator_->get_register(v8::internal::Simulator::fp));
 #endif
   }