src/amd/registers/canonicalize.py

   1 #
   2 # Copyright 2019 Advanced Micro Devices, Inc.
   3 #
   4 # Permission is hereby granted, free of charge, to any person obtaining a
   5 # copy of this software and associated documentation files (the "Software"),
   6 # to deal in the Software without restriction, including without limitation
   7 # on the rights to use, copy, modify, merge, publish, distribute, sub
   8 # license, and/or sell copies of the Software, and to permit persons to whom
   9 # the Software is furnished to do so, subject to the following conditions:
  10 #
  11 # The above copyright notice and this permission notice (including the next
  12 # paragraph) shall be included in all copies or substantial portions of the
  13 # Software.
  14 #
  15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18 # THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19 # DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20 # OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21 # USE OR OTHER DEALINGS IN THE SOFTWARE.
  22 #
  23 """
  24 Helper script that was used during the generation of the JSON data.
  25
  26   usage: python3 canonicalize.py FILE
  27
  28 Reads the register database from FILE, performs canonicalization
  29 (de-duplication of enums and register types, implicitly sorting JSON by name)
  30 and attempts to deduce missing register types.
  31
  32 Notes about deduced register types as well as the output JSON are printed on
  33 stdout.
  34 """
  35
  36 from __future__ import absolute_import, division, print_function, unicode_literals
  37
  38 from collections import defaultdict
  39 import json
  40 import re
  41 import sys
  42
  43 from regdb import RegisterDatabase, deduplicate_enums, deduplicate_register_types
  44
  45 RE_number = re.compile('[0-9]+')
  46
  47 def deduce_missing_register_types(regdb):
  48     """
  49     This is a heuristic for filling in missing register types based on
  50     sequentially named registers.
  51     """
  52     buckets = defaultdict(list)
  53     for regmap in regdb.register_mappings():
  54         buckets[RE_number.sub('0', regmap.name)].append(regmap)
  55
  56     for bucket in buckets.values():
  57         if len(bucket) <= 1:
  58             continue
  59
  60         regtypenames = set(
  61             regmap.type_ref for regmap in bucket if hasattr(regmap, 'type_ref')
  62         )
  63         if len(regtypenames) == 1:
  64             regtypename = regtypenames.pop()
  65             for regmap in bucket:
  66                 if not hasattr(regmap, 'type_ref'):
  67                     print('Deducing {0} -> {1}'.format(regmap.name, regtypename), file=sys.stderr)
  68                 regmap.type_ref = regtypename
  69
  70
  71 def json_canonicalize(filp, chips = None):
  72     regdb = RegisterDatabase.from_json(json.load(filp))
  73
  74     if chips is not None:
  75         for regmap in regdb.register_mappings():
  76             assert not hasattr(regmap, 'chips')
  77             regmap.chips = [chips]
  78
  79     deduplicate_enums(regdb)
  80     deduplicate_register_types(regdb)
  81     deduce_missing_register_types(regdb)
  82     regdb.garbage_collect()
  83
  84     return regdb.encode_json_pretty()
  85
  86
  87 def main():
  88     print(json_canonicalize(open(sys.argv[1], 'r'), sys.argv[2]))
  89
  90 if __name__ == '__main__':
  91     main()
  92
  93 # kate: space-indent on; indent-width 4; replace-tabs on;