Copying CBMC proofs from aws/amazon-freertos repo ./tools/cbmc to this repo ./FreeRTOS/Test/CBMC as is.

The commit ID in aws/amazon-freertos is 0c8e0217f2a43bdeb364b58ae01c6c259e03ef1b.

FreeRTOS/Test/CBMC/patches/unpatch.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+#
+# unpatching changes for the CBMC proofs.
+#
+# Copyright (C) 2019 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+#
+# 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.
+
+import subprocess
+import os
+import sys
+from glob import glob
+
+from patches_constants import PATCHES_DIR
+
+try:
+    os.remove(os.path.join(PATCHES_DIR, "patched"))
+except FileNotFoundError:
+    print("Nothing to do here.")
+    sys.exit(0)
+for tmpfile in glob(os.path.join(PATCHES_DIR, "*.patch")):
+    print("unpatch", tmpfile)
+    result = subprocess.run(["git", "apply", "-R", tmpfile],
+                            cwd=os.path.join("..", "..", ".."))
+    if result.returncode:
+        print("Unpatching failed: {}".format(tmpfile))