src/mesa/drivers/dri/gen-symbol-redefs.py

   1 #!/usr/bin/env python2
   2 # -*- coding: utf-8 -*-
   3
   4 # Copyright © 2013 Intel Corporation
   5 #
   6 # Permission is hereby granted, free of charge, to any person obtaining a
   7 # copy of this software and associated documentation files (the "Software"),
   8 # to deal in the Software without restriction, including without limitation
   9 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10 # and/or sell copies of the Software, and to permit persons to whom the
  11 # Software is furnished to do so, subject to the following conditions:
  12 #
  13 # The above copyright notice and this permission notice (including the next
  14 # paragraph) shall be included in all copies or substantial portions of the
  15 # Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23 # IN THE SOFTWARE.
  24
  25 import sys
  26 import argparse
  27 import re
  28 import subprocess
  29
  30 # Example usages:
  31 # ./gen-symbol-redefs.py i915/.libs/libi915_dri.a old_ i915 i830
  32 # ./gen-symbol-redefs.py r200/.libs/libr200_dri.a r200_ r200
  33
  34 argparser = argparse.ArgumentParser(description="Generates #defines to hide driver global symbols outside of a driver's namespace.")
  35 argparser.add_argument("file",
  36                     metavar = 'file',
  37                     help='libdrivername.a file to read')
  38 argparser.add_argument("newprefix",
  39                     metavar = 'newprefix',
  40                     help='New prefix to give non-driver global symbols')
  41 argparser.add_argument('prefixes',
  42                        metavar='prefix',
  43                        nargs='*',
  44                        help='driver-specific prefixes')
  45 args = argparser.parse_args()
  46
  47 stdout = subprocess.check_output(['nm', args.file])
  48
  49 for line in stdout.splitlines():
  50     m = re.match("[0-9a-z]+ [BT] (.*)", line)
  51     if not m:
  52         continue
  53
  54     symbol = m.group(1)
  55
  56     has_good_prefix = re.match(args.newprefix, symbol) != None
  57     for prefix in args.prefixes:
  58         if re.match(prefix, symbol):
  59             has_good_prefix = True
  60             break
  61     if has_good_prefix:
  62         continue
  63
  64     # This is the single public entrypoint.
  65     if re.match("__driDriverGetExtensions", symbol):
  66         continue
  67
  68     print '#define {0:35} {1}{0}'.format(symbol, args.newprefix)