Add Xtensa port

The project file is for Xtensa Xplorer simulator.
Also add tests for one size stream buffer.

FreeRTOS/Source/portable/ThirdParty/XCC/Xtensa/porttrace.h

@@ -0,0 +1,42 @@
+/*******************************************************************************
+// Copyright (c) 2003-2015 Cadence Design Systems, Inc.
+//
+// Permission is hereby granted, free of charge, to any person obtaining
+// a copy of this software and associated documentation files (the
+// "Software"), to deal in the Software without restriction, including
+// without limitation the rights to use, copy, modify, merge, publish,
+// distribute, sublicense, and/or sell copies of the Software, and to
+// permit persons to whom the Software is furnished to do so, subject to
+// the following conditions:
+//
+// The above copyright notice and this permission notice shall be included
+// in all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+// IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+// CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+// SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+--------------------------------------------------------------------------------
+
+/*
+ * This utility helps tracing the entering and exiting from tasks. It maintains a circular buffer
+ * of tasks in the order they execute, and their execution time.
+ * In order to enable it, set configUSE_TRACE_FACILITY_2 to 1 in FreeRTOSConfig.h.
+ * You will also need to download the FreeRTOS_trace patch that contains
+ * porttrace.c and the complete version of porttrace.h
+ */
+
+#ifndef PORTTRACE_H
+#define PORTTRACE_H
+
+#if configUSE_TRACE_FACILITY_2
+    #error "You need to download the FreeRTOS_trace patch that overwrites this file"
+#endif
+
+#define porttracePrint(nelements)
+#define porttraceStamp(stamp, count_incr)
+
+#endif /* PORTTRACE_H */