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: Yongqin Liu <yongqin.liu@linaro.org>
Change-Id: Ibf3eeb3679b233cd0d54501d385f442e0c0c34ec
This commit is contained in:
Yongqin Liu
2020-08-08 14:32:47 +08:00
parent c4e9bf20ce
commit 2c8b8eca5e

View File

@@ -40,7 +40,7 @@ COMPRESSION_ALGO = (
# LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n"; # LINUX_COMPILE_HOST ") (" LINUX_COMPILER ") " UTS_VERSION "\n";
LINUX_BANNER_PREFIX = b'Linux version ' LINUX_BANNER_PREFIX = b'Linux version '
LINUX_BANNER_REGEX = LINUX_BANNER_PREFIX + \ 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): 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") 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): def dump_release(input_bytes):
""" """
Dump kernel release, w.x.y-..., from input_bytes. Search for the string Dump kernel release, w.x.y-..., from input_bytes. Search for the string
@@ -208,6 +216,13 @@ def main():
nargs='?', nargs='?',
type=argparse.FileType('wb'), type=argparse.FileType('wb'),
const=sys.stdout) 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', parser.add_argument('--tools',
help='Decompression tools to use. If not specified, PATH ' help='Decompression tools to use. If not specified, PATH '
'is searched.', 'is searched.',
@@ -234,6 +249,10 @@ def main():
"kernel release in {}".format(args.input.name)): "kernel release in {}".format(args.input.name)):
ret = 1 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 return ret