GCOV support

Change-Id: I73a446754cd03178055459eb75c7b2f87b51b0f3
Reviewed-on: http://gfw160.austin.ibm.com:8080/gerrit/635
Tested-by: Jenkins Server
Reviewed-by: A. Patrick Williams III <iawillia@us.ibm.com>

3 files changed, 104 insertions, 0 deletions

diff --git a/src/sys/prof/gcov.C b/src/sys/prof/gcov.C
new file mode 100644
index 000000000..7f011d51f
--- /dev/null
+++ b/src/sys/prof/gcov.C
@@ -0,0 +1,24 @@
+//  IBM_PROLOG_BEGIN_TAG
+//  This is an automatically generated prolog.
+//
+//  $Source: src/sys/prof/gcov.C $
+//
+//  IBM CONFIDENTIAL
+//
+//  COPYRIGHT International Business Machines Corp. 2012
+//
+//  p1
+//
+//  Object Code Only (OCO) source materials
+//  Licensed Internal Code Source Materials
+//  IBM HostBoot Licensed Internal Code
+//
+//  The source code for this program is not published or other-
+//  wise divested of its trade secrets, irrespective of what has
+//  been deposited with the U.S. Copyright Office.
+//
+//  Origin: 30
+//
+//  IBM_PROLOG_END
+
+#include <usr/gcov.h>
diff --git a/src/sys/prof/idletask.C b/src/sys/prof/idletask.C
new file mode 100644
index 000000000..843f26628
--- /dev/null
+++ b/src/sys/prof/idletask.C
@@ -0,0 +1,41 @@
+//  IBM_PROLOG_BEGIN_TAG
+//  This is an automatically generated prolog.
+//
+//  $Source: src/sys/prof/idletask.C $
+//
+//  IBM CONFIDENTIAL
+//
+//  COPYRIGHT International Business Machines Corp. 2012
+//
+//  p1
+//
+//  Object Code Only (OCO) source materials
+//  Licensed Internal Code Source Materials
+//  IBM HostBoot Licensed Internal Code
+//
+//  The source code for this program is not published or other-
+//  wise divested of its trade secrets, irrespective of what has
+//  been deposited with the U.S. Copyright Office.
+//
+//  Origin: 30
+//
+//  IBM_PROLOG_END
+
+/** @file idletask.C
+ *  @brief Code for the kernel idle-loop.
+ *
+ *  This code exists here under the sys/prof directory to ensure that it does
+ *  not get instrumented with code coverage.  The idle threads run stack-less
+ *  and bad things happen if they have been instrumented.
+ */
+
+#include <kernel/taskmgr.H>
+#include <arch/ppc.H>
+
+void TaskManager::idleTaskLoop(void* unused)
+{
+    while(1)
+    {
+	setThreadPriorityLow();
+    }
+}
diff --git a/src/sys/prof/makefile b/src/sys/prof/makefile
new file mode 100644
index 000000000..ee42459e4
--- /dev/null
+++ b/src/sys/prof/makefile
@@ -0,0 +1,39 @@
+#  IBM_PROLOG_BEGIN_TAG
+#  This is an automatically generated prolog.
+#
+#  $Source: src/sys/vfs/makefile $
+#
+#  IBM CONFIDENTIAL
+#
+#  COPYRIGHT International Business Machines Corp. 2010 - 2011
+#
+#  p1
+#
+#  Object Code Only (OCO) source materials
+#  Licensed Internal Code Source Materials
+#  IBM HostBoot Licensed Internal Code
+#
+#  The source code for this program is not published or other-
+#  wise divested of its trade secrets, irrespective of what has
+#  been deposited with the U.S. Copyright Office.
+#
+#  Origin: 30
+#
+#  IBM_PROLOG_END
+
+ROOTPATH = ../../..
+
+# If code coverage profiling is enabled we need to add the gcov object to the
+# build list.  This is triggered via the HOSTBOOT_PROFILE variable.  We then
+# undefine that variable to ensure that none of the code in this directory is
+# instrumented itself.  This is the directory where code which is unsafe to
+# instrument should go.
+
+ifdef HOSTBOOT_PROFILE
+OBJS = gcov.o
+undefine HOSTBOOT_PROFILE
+endif
+
+OBJS += idletask.o
+
+include ${ROOTPATH}/config.mk