the other jimmy / mbed-sdk-tools

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dev/syms.py@0:66f3b5499f7f, 2016-05-19 (annotated)

Committer:
screamer
Date:
Thu May 19 19:44:41 2016 +0100
Revision:
0:66f3b5499f7f
Initial revision

Who changed what in which revision?

UserRevisionLine numberNew contents of line
screamer 0:66f3b5499f7f 1 """
screamer 0:66f3b5499f7f 2 mbed SDK
screamer 0:66f3b5499f7f 3 Copyright (c) 2011-2013 ARM Limited
screamer 0:66f3b5499f7f 4
screamer 0:66f3b5499f7f 5 Licensed under the Apache License, Version 2.0 (the "License");
screamer 0:66f3b5499f7f 6 you may not use this file except in compliance with the License.
screamer 0:66f3b5499f7f 7 You may obtain a copy of the License at
screamer 0:66f3b5499f7f 8
screamer 0:66f3b5499f7f 9 http://www.apache.org/licenses/LICENSE-2.0
screamer 0:66f3b5499f7f 10
screamer 0:66f3b5499f7f 11 Unless required by applicable law or agreed to in writing, software
screamer 0:66f3b5499f7f 12 distributed under the License is distributed on an "AS IS" BASIS,
screamer 0:66f3b5499f7f 13 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
screamer 0:66f3b5499f7f 14 See the License for the specific language governing permissions and
screamer 0:66f3b5499f7f 15 limitations under the License.
screamer 0:66f3b5499f7f 16
screamer 0:66f3b5499f7f 17
screamer 0:66f3b5499f7f 18 Utility to find which libraries could define a given symbol
screamer 0:66f3b5499f7f 19 """
screamer 0:66f3b5499f7f 20 from argparse import ArgumentParser
screamer 0:66f3b5499f7f 21 from os.path import join, splitext
screamer 0:66f3b5499f7f 22 from os import walk
screamer 0:66f3b5499f7f 23 from subprocess import Popen, PIPE
screamer 0:66f3b5499f7f 24
screamer 0:66f3b5499f7f 25
screamer 0:66f3b5499f7f 26 OBJ_EXT = ['.o', '.a', '.ar']
screamer 0:66f3b5499f7f 27
screamer 0:66f3b5499f7f 28
screamer 0:66f3b5499f7f 29 def find_sym_in_lib(sym, obj_path):
screamer 0:66f3b5499f7f 30 contain_symbol = False
screamer 0:66f3b5499f7f 31
screamer 0:66f3b5499f7f 32 out = Popen(["nm", "-C", obj_path], stdout=PIPE, stderr=PIPE).communicate()[0]
screamer 0:66f3b5499f7f 33 for line in out.splitlines():
screamer 0:66f3b5499f7f 34 tokens = line.split()
screamer 0:66f3b5499f7f 35 n = len(tokens)
screamer 0:66f3b5499f7f 36 if n == 2:
screamer 0:66f3b5499f7f 37 sym_type = tokens[0]
screamer 0:66f3b5499f7f 38 sym_name = tokens[1]
screamer 0:66f3b5499f7f 39 elif n == 3:
screamer 0:66f3b5499f7f 40 sym_type = tokens[1]
screamer 0:66f3b5499f7f 41 sym_name = tokens[2]
screamer 0:66f3b5499f7f 42 else:
screamer 0:66f3b5499f7f 43 continue
screamer 0:66f3b5499f7f 44
screamer 0:66f3b5499f7f 45 if sym_type == "U":
screamer 0:66f3b5499f7f 46 # This object is using this symbol, not defining it
screamer 0:66f3b5499f7f 47 continue
screamer 0:66f3b5499f7f 48
screamer 0:66f3b5499f7f 49 if sym_name == sym:
screamer 0:66f3b5499f7f 50 contain_symbol = True
screamer 0:66f3b5499f7f 51
screamer 0:66f3b5499f7f 52 return contain_symbol
screamer 0:66f3b5499f7f 53
screamer 0:66f3b5499f7f 54
screamer 0:66f3b5499f7f 55 def find_sym_in_path(sym, dir_path):
screamer 0:66f3b5499f7f 56 for root, _, files in walk(dir_path):
screamer 0:66f3b5499f7f 57 for file in files:
screamer 0:66f3b5499f7f 58
screamer 0:66f3b5499f7f 59 _, ext = splitext(file)
screamer 0:66f3b5499f7f 60 if ext not in OBJ_EXT: continue
screamer 0:66f3b5499f7f 61
screamer 0:66f3b5499f7f 62 path = join(root, file)
screamer 0:66f3b5499f7f 63 if find_sym_in_lib(sym, path):
screamer 0:66f3b5499f7f 64 print path
screamer 0:66f3b5499f7f 65
screamer 0:66f3b5499f7f 66
screamer 0:66f3b5499f7f 67 if __name__ == '__main__':
screamer 0:66f3b5499f7f 68 parser = ArgumentParser(description='Find Symbol')
screamer 0:66f3b5499f7f 69 parser.add_argument('-s', '--sym', required=True,
screamer 0:66f3b5499f7f 70 help='The symbol to be searched')
screamer 0:66f3b5499f7f 71 parser.add_argument('-p', '--path', required=True,
screamer 0:66f3b5499f7f 72 help='The path where to search')
screamer 0:66f3b5499f7f 73 args = parser.parse_args()
screamer 0:66f3b5499f7f 74
screamer 0:66f3b5499f7f 75 find_sym_in_path(args.sym, args.path)