74 lines
2.5 KiB
Python
74 lines
2.5 KiB
Python
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#! /usr/bin/env python3
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import subprocess
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import collections
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from itertools import chain
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import argparse
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def decode(bin, traces):
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if len(traces) == 0:
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return []
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addrs = chain.from_iterable([x[1:] for x in traces])
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cmd = ["addr2line", "-f", "-s", "-e", bin] + list(addrs)
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decoded = subprocess.run(cmd, stdout=subprocess.PIPE).stdout
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decoded = collections.deque(decoded.split(b'\n'))
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for line in traces:
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target_name = decoded.popleft()
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target_line = decoded.popleft()
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site_name = decoded.popleft()
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site_line = decoded.popleft()
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yield [line[0],target_name,site_name,site_line]
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def processBlock(args, traces, out_file):
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decoded = decode(args.binary, traces)
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for decoded_line in decoded:
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if decoded_line[0] == 'e':
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out_file.write(b"Enter ")
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out_file.write(decoded_line[1])
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if not args.suppress_callsite:
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out_file.write(b" from ")
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out_file.write(decoded_line[2])
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out_file.write(b" (")
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out_file.write(decoded_line[3])
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out_file.write(b")")
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out_file.write(b"\n")
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if decoded_line[0] == 'x' and (not args.suppress_exit):
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out_file.write(b"Exit ")
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out_file.write(decoded_line[1])
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out_file.write(b"\n")
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parser = argparse.ArgumentParser(description='Decode a trace file generated by dotrace.')
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parser.add_argument('-b', '--binary', help='The binary file.',
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required=True, metavar="FILE")
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parser.add_argument('-t', '--trace', help="The trace file (default: '%(default)s').",
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default="trace.out", metavar="FILE")
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parser.add_argument('-o', '--output', help="The output file (default: '%(default)s').",
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default="trace.decoded", metavar="FILE")
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parser.add_argument('-e', '--suppress-exit',
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help='Do not output function exits.', action='store_true')
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parser.add_argument('-c', '--suppress-callsite',
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help='Do not output callsite of function calls.', action='store_true')
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parser.add_argument('-s', '--block-size', type=int, default=10000,
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help='The number of addresses forwarded to addr2line (default: %(default)s).')
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if __name__ == "__main__":
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args = parser.parse_args()
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lines_to_read = args.block_size / 2
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accumulator = []
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i = 0
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total = 1
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with open(args.trace, 'r') as trace_file:
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with open(args.output, 'bw') as out_file:
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for line in trace_file:
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i = i + 1
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accumulator.append(line.split())
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if i >= lines_to_read:
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print("Processing lines {}-{}.".format(total, total + i - 1))
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processBlock(args, accumulator, out_file)
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accumulator.clear()
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total = total + i
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i = 0
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print("Processing lines {}-{} [final block].".format(total, total + i - 1))
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processBlock(args, accumulator, out_file)
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