Linux: Add the debug link to our release executables and remove the obsolete ...

build/linux/dump_signature.py

-#!/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)