tests: Add CPU switching tests

This changeset adds a set of tests that stress the CPU switching
code. It adds the following test configurations:

 * tsunami-switcheroo-full -- Alpha system (atomic, timing, O3)
 * realview-switcheroo-atomic -- ARM system (atomic<->atomic)
 * realview-switcheroo-timing -- ARM system (timing<->timing)
 * realview-switcheroo-o3 -- ARM system (O3<->O3)
 * realview-switcheroo-full -- ARM system (atomic, timing, O3)

Reference data is provided for the 10.linux-boot test case. All of the
tests trigger a CPU switch once per millisecond during the boot
process.

The in-order CPU model was not included in any of the tests as it does
not support CPU handover.

1 files changed, 11 insertions, 7 deletions

diff --git a/tests/run.py b/tests/run.py
index e4474ac5c..ae00be286 100644
--- a/tests/run.py
+++ b/tests/run.py
@@ -93,6 +93,16 @@ def require_sim_object(name, fatal=False):
         else:
             skip_test(msg)
 
+def run_test(root):
+    """Default run_test implementations. Scripts can override it."""
+
+    # instantiate configuration
+    m5.instantiate()
+
+    # simulate until program terminates
+    exit_event = m5.simulate(maxtick)
+    print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+
 # Since we're in batch mode, dont allow tcp socket connections
 m5.disableAllListeners()
 
@@ -160,10 +170,4 @@ for sysattr in [ "system", "testsys", "drivesys" ]:
     if hasattr(root, sysattr):
         initCPUs(getattr(root, sysattr))
 
-# instantiate configuration
-m5.instantiate()
-
-# simulate until program terminates
-exit_event = m5.simulate(maxtick)
-
-print 'Exiting @ tick', m5.curTick(), 'because', exit_event.getCause()
+run_test(root)