Index: build/linux/dump_signature.py |
=================================================================== |
--- build/linux/dump_signature.py (revision 68615) |
+++ build/linux/dump_signature.py (working copy) |
@@ -1,56 +0,0 @@ |
-#!/usr/bin/python |
-# |
-# Copyright (c) 2010 The Chromium Authors. All rights reserved. |
-# Use of this source code is governed by a BSD-style license that can be |
-# found in the LICENSE file. |
-# |
-# This generates symbol signatures with the same algorithm as |
-# src/breakpad/src/common/linux/file_id.cc@461 |
- |
-import struct |
-import sys |
-import subprocess |
- |
-if len(sys.argv) != 2: |
- sys.stderr.write("Error, no filename specified.\n") |
- sys.exit(1) |
- |
-# Shell out to objdump to get the offset of the .text section |
-objdump = subprocess.Popen(['objdump', '-h', sys.argv[1]], stdout = subprocess.PIPE) |
-(sections, _) = objdump.communicate() |
-if objdump.returncode != 0: |
- sys.stderr.write('Failed to run objdump to find .text section.\n') |
- sys.exit(1) |
- |
-text_section = [x for x in sections.splitlines() if '.text' in x] |
-if len(text_section) == 0: |
- sys.stderr.write('objdump failed to find a .text section.\n') |
- sys.exit(1) |
-text_section = text_section[0] |
-try: |
- file_offset = int(text_section.split()[5], 16) |
-except ValueError: |
- sys.stderr.write("Failed to parse objdump output. Here is the failing line:\n"); |
- sys.stderr.write(text_section) |
- sys.exit(1) |
- |
-bin = open(sys.argv[1]) |
-bin.seek(file_offset) |
-if bin.tell() != file_offset: |
- sys.stderr.write("Failed to seek to the .text segment. Truncated file?\n"); |
- sys.exit(1) |
- |
-data = bin.read(4096) |
-if len(data) != 4096: |
- sys.stderr.write("Error, did not read first page of data.\n"); |
- sys.exit(1) |
-bin.close() |
- |
-signature = [0] * 16 |
-for i in range(0, 4096): |
- signature[i % 16] ^= ord(data[i]) |
- |
-# Append a 0 at the end for the generation number (always 0 on Linux) |
-out = ('%08X%04X%04X%02X%02X%02X%02X%02X%02X%02X%02X0' % |
- struct.unpack('I2H8B', struct.pack('16B', *signature))) |
-sys.stdout.write(out) |