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Commit 2c8b8eca authored by Yongqin Liu's avatar Yongqin Liu
Browse files

extract_kernel.py: add support to output compiler information 

Test: tested with android-mainline gki kernel from
    https://android.googlesource.com/kernel/prebuilts/mainline/arm64/



Signed-off-by: default avatarYongqin Liu <yongqin.liu@linaro.org>
Change-Id: Ibf3eeb3679b233cd0d54501d385f442e0c0c34ec
parent c4e9bf20

tools/extract_kernel.py

+20 −1
Original line number Diff line number Diff line
@@ -40,7 +40,7 @@ COMPRESSION_ALGO = ( 
# LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";

LINUX_BANNER_PREFIX = b'Linux version '

LINUX_BANNER_REGEX = LINUX_BANNER_PREFIX + \

    r'(?P<release>(?P<version>[0-9]+[.][0-9]+[.][0-9]+).*) \(.*@.*\) \(.*\) .*\n'

    r'(?P<release>(?P<version>[0-9]+[.][0-9]+[.][0-9]+).*) \(.*@.*\) \((?P<compiler>.*)\) .*\n'





def get_from_release(input_bytes, start_idx, key):
@@ -82,6 +82,14 @@ def dump_version(input_bytes): 
  return dump_from_release(input_bytes, "version")





def dump_compiler(input_bytes):

  """

  Dump kernel version, w.x.y, from input_bytes. Search for the string

  "Linux version " and do pattern matching after it. See LINUX_BANNER_REGEX.

  """

  return dump_from_release(input_bytes, "compiler")





def dump_release(input_bytes):

  """

  Dump kernel release, w.x.y-..., from input_bytes. Search for the string
@@ -208,6 +216,13 @@ def main(): 
                      nargs='?',

                      type=argparse.FileType('wb'),

                      const=sys.stdout)

  parser.add_argument('--output-compiler',

                      help='If specified, write the compiler information. Use stdout if no file '

                           'is specified.',

                      metavar='FILE',

                      nargs='?',

                      type=argparse.FileType('wb'),

                      const=sys.stdout)

  parser.add_argument('--tools',

                      help='Decompression tools to use. If not specified, PATH '

                           'is searched.',
@@ -234,6 +249,10 @@ def main(): 
                      "kernel release in {}".format(args.input.name)):

    ret = 1



  if not dump_to_file(args.output_compiler, dump_compiler, input_bytes,

                      "kernel compiler in {}".format(args.input.name)):

    ret = 1



  return ret