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diff --git a/src/amd/registers/mergedbs.py b/src/amd/registers/mergedbs.py
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+++ b/src/amd/registers/mergedbs.py
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+#
+# Copyright 2017-2019 Advanced Micro Devices, 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
+# on the rights to use, copy, modify, merge, publish, distribute, sub
+# license, 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 (including the next
+# paragraph) 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 NON-INFRINGEMENT. IN NO EVENT SHALL
+# THE AUTHOR(S) AND/OR THEIR SUPPLIERS 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.
+#
+"""
+Helper script to merge register database JSON files.
+
+  usage: python3 mergedbs.py [FILES...]
+
+Will merge the given JSON files and output the result on stdout.
+"""
+
+from __future__ import absolute_import, division, print_function, unicode_literals
+
+from collections import defaultdict
+import json
+import re
+import sys
+
+from regdb import RegisterDatabase, deduplicate_enums, deduplicate_register_types
+
+def main():
+    regdb = RegisterDatabase()
+    for filename in sys.argv[1:]:
+        with open(filename, 'r') as filp:
+            regdb.update(RegisterDatabase.from_json(json.load(filp)))
+
+    deduplicate_enums(regdb)
+    deduplicate_register_types(regdb)
+
+    print(regdb.encode_json_pretty())
+
+
+if __name__ == '__main__':
+    main()
+
+# kate: space-indent on; indent-width 4; replace-tabs on;