mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-13 20:12:26 +00:00
109 lines
3.6 KiB
Python
Executable File
109 lines
3.6 KiB
Python
Executable File
#!/usr/bin/env python3
|
|
|
|
import os
|
|
import shlex
|
|
import sys
|
|
import signal
|
|
import subprocess
|
|
|
|
import common
|
|
|
|
defaults = {
|
|
'after': '',
|
|
'before': '',
|
|
'no_continue': False,
|
|
'kgdb': False,
|
|
'no_lxsymbols': False,
|
|
'break_at': None,
|
|
}
|
|
|
|
def main(args, extra_args=None):
|
|
'''
|
|
:param args: argparse parse_argument() output. Must contain all the common options,
|
|
but does not need GDB specific ones.
|
|
:type args: argparse.Namespace
|
|
|
|
:param extra_args: extra arguments to be added to args
|
|
:type extra_args: Dict[str,Any]
|
|
|
|
:return: GDB exit status
|
|
:rtype: int
|
|
'''
|
|
global defaults
|
|
args = common.resolve_args(defaults, args, extra_args)
|
|
after = shlex.split(args.after)
|
|
before = shlex.split(args.before)
|
|
if args.no_lxsymbols:
|
|
lx_symbols = []
|
|
else:
|
|
lx_symbols = ['-ex', 'lx-symbols ../kernel_modules-1.0/']
|
|
if args.break_at is not None:
|
|
break_at = ['-ex', 'break {}'.format(args.break_at)]
|
|
else:
|
|
break_at = []
|
|
cmd = (
|
|
[
|
|
os.path.join(common.host_bin_dir,
|
|
'{}-linux-gdb'.format(args.arch))
|
|
] +
|
|
before +
|
|
[
|
|
'-q',
|
|
'-ex', 'add-auto-load-safe-path {}'.format(common.linux_variant_dir),
|
|
'-ex', 'file {}'.format(common.vmlinux),
|
|
'-ex', 'target remote localhost:{}'.format(common.gdb_port),
|
|
]
|
|
)
|
|
if not args.kgdb:
|
|
cmd.extend(break_at)
|
|
if not args.no_continue:
|
|
# ## lx-symbols
|
|
#
|
|
# ### lx-symbols after continue
|
|
#
|
|
# lx symbols must be run after continue.
|
|
#
|
|
# running it immediately after the connect on the bootloader leads to failure,
|
|
# likely because kernel structure on which it depends are not yet available.
|
|
#
|
|
# With this setup, continue runs, and lx-symbols only runs when a break happens,
|
|
# either by hitting the breakpoint, or by entering Ctrl + C.
|
|
#
|
|
# Sure, if the user sets a break on a raw address of the bootloader,
|
|
# problems will still arise, but let's think about that some other time.
|
|
#
|
|
# ### lx-symbols autoload
|
|
#
|
|
# The lx-symbols commands gets loaded through the file vmlinux-gdb.py
|
|
# which gets put on the kernel build root when python debugging scripts are enabled.
|
|
cmd.extend(['-ex', 'continue'] + lx_symbols)
|
|
cmd.extend(after)
|
|
return common.run_cmd(cmd, cmd_file=os.path.join(common.run_dir, 'rungdb.sh'), cwd=common.linux_variant_dir)
|
|
|
|
if __name__ == '__main__':
|
|
parser = common.get_argparse(argparse_args={'description': 'Connect with GDB to an emulator to debug Linux itself'})
|
|
parser.add_argument(
|
|
'-A', '--after', default=defaults['after'],
|
|
help='Pass extra arguments to GDB, to be appended after all other arguments'
|
|
)
|
|
parser.add_argument(
|
|
'-b', '--before', default=defaults['before'],
|
|
help='Pass extra arguments to GDB to be prepended before any of the arguments passed by this script'
|
|
)
|
|
parser.add_argument(
|
|
'-C', '--no-continue', default=defaults['no_continue'], action='store_true',
|
|
help="Don't run continue after connecting"
|
|
)
|
|
parser.add_argument(
|
|
'-k', '--kgdb', default=defaults['kgdb'], action='store_true'
|
|
)
|
|
parser.add_argument(
|
|
'-X', '--no-lxsymbols', default=defaults['no_lxsymbols'], action='store_true'
|
|
)
|
|
parser.add_argument(
|
|
'break_at', nargs='?',
|
|
help='Extra options to append at the end of the emulator command line'
|
|
)
|
|
args = common.setup(parser)
|
|
sys.exit(main(args))
|