[MIPS] Adding validator for MIPS architecture.

src/trusted/validator_mips/dgen/generate_decoder.py

+#!/usr/bin/python
+#
+# Copyright 2012 The Native Client Authors.  All rights reserved.
+# Use of this source code is governed by a BSD-style license that can
+# be found in the LICENSE file.
+# Copyright 2012, Google Inc.
+#
+
+"""Decoder Generator script.
+
+Usage: generate-decoder.py <table-file> <output-cc-file>

[Brad Chen, 2012/05/04 22:49:50]

So ... I understand this was copied from old ARM decoder tablegen without mods,
correct?

You should understand that Karl is making a bunch of changes/improvements on the
ARM side, and when those are stable we will likely want to drop this old
tablegen and start using his new tablegen.

Can you please add a TODO comment to that effect?

[petarj, 2012/05/08 14:54:19]

Sure, will do.

+"""
+
+import sys
+import dgen_input
+import dgen_output
+
+def main(argv):
+    table_filename, output_filename = argv[1], argv[2]
+
+    print "Decoder Generator reading ", table_filename
+    f = open(table_filename, 'r')
+    tables = dgen_input.parse_tables(f)
+    f.close()
+
+    print "Successful - got %d tables." % len(tables)
+
+    print "Generating output to %s..." % output_filename
+    f = open(output_filename, 'w')
+    dgen_output.generate_decoder(tables,
+        dgen_output.COutput(f))
+    f.close()
+    print "Completed."
+
+    return 0
+
+if __name__ == '__main__':
+    sys.exit(main(sys.argv))