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https://github.com/cirosantilli/linux-kernel-module-cheat.git
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rungdb-user: failed attempt with rungdb factor
This commit is contained in:
Ciro Santilli
148
rungdb
148
rungdb
@@ -8,75 +8,79 @@ import subprocess
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import common
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parser = common.get_argparse(argparse_args={'description':'Connect with GDB to an emulator to debug Linux itself'})
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parser.add_argument(
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'-A', '--after', default='',
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help='Pass extra arguments to GDB, to be appended after all other arguments'
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)
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parser.add_argument(
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'-b', '--before', default='',
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help='Pass extra arguments to GDB to be prepended before any of the arguments passed by this script'
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)
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parser.add_argument(
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'-C', '--no-continue', default=False, action='store_true',
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help="Don't run continue after connecting"
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)
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parser.add_argument(
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'-k', '--kgdb', default=False, action='store_true'
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)
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parser.add_argument(
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'-X', '--no-lxsymbols', default=False, action='store_true'
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)
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parser.add_argument(
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'break_at', nargs='?',
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help='Extra options to append at the end of the emulator command line'
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)
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args = common.setup(parser)
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after = shlex.split(args.after)
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before = shlex.split(args.before)
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if args.no_lxsymbols:
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lx_symbols = []
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else:
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lx_symbols = ['-ex', 'lx-symbols ../kernel_module-1.0/']
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if args.break_at is not None:
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break_at = ['-ex', 'break {}'.format(args.break_at)]
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else:
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break_at = []
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cmd = (
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[
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os.path.join(common.host_bin_dir,
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'{}-linux-gdb'.format(args.arch))
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] +
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before +
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[
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'-q',
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'-ex', 'add-auto-load-safe-path {}'.format(common.linux_variant_dir),
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'-ex', 'file {}'.format(common.vmlinux),
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'-ex', 'target remote localhost:{}'.format(common.gdb_port),
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]
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)
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if not args.kgdb:
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cmd.extend(break_at)
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if not args.no_continue:
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# ## lx-symbols
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#
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# ### lx-symbols after continue
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#
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# lx symbols must be run after continue.
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#
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# running it immediately after the connect on the bootloader leads to failure,
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# likely because kernel structure on which it depends are not yet available.
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#
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# With this setup, continue runs, and lx-symbols only runs when a break happens,
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# either by hitting the breakpoint, or by entering Ctrl + C.
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#
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# Sure, if the user sets a break on a raw address of the bootloader,
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# problems will still arise, but let's think about that some other time.
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#
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# ### lx-symbols autoload
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#
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# The lx-symbols commands gets loaded through the file vmlinux-gdb.py
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# which gets put on the kernel build root when python debugging scripts are enabled.
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cmd.extend(['-ex', 'continue'] + lx_symbols)
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cmd.extend(after)
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sys.exit(common.run_cmd(cmd, cmd_file=os.path.join(common.run_dir, 'rungdb.sh'), cwd=common.linux_variant_dir))
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def main(args):
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after = shlex.split(args.after)
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before = shlex.split(args.before)
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if args.no_lxsymbols:
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lx_symbols = []
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else:
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lx_symbols = ['-ex', 'lx-symbols ../kernel_module-1.0/']
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if args.break_at is not None:
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break_at = ['-ex', 'break {}'.format(args.break_at)]
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else:
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break_at = []
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cmd = (
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[
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os.path.join(common.host_bin_dir,
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'{}-linux-gdb'.format(args.arch))
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] +
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before +
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[
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'-q',
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'-ex', 'add-auto-load-safe-path {}'.format(common.linux_variant_dir),
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'-ex', 'file {}'.format(common.vmlinux),
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'-ex', 'target remote localhost:{}'.format(common.gdb_port),
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]
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)
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if not args.kgdb:
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cmd.extend(break_at)
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if not args.no_continue:
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# ## lx-symbols
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#
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# ### lx-symbols after continue
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#
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# lx symbols must be run after continue.
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#
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# running it immediately after the connect on the bootloader leads to failure,
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# likely because kernel structure on which it depends are not yet available.
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#
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# With this setup, continue runs, and lx-symbols only runs when a break happens,
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# either by hitting the breakpoint, or by entering Ctrl + C.
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#
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# Sure, if the user sets a break on a raw address of the bootloader,
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# problems will still arise, but let's think about that some other time.
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#
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# ### lx-symbols autoload
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#
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# The lx-symbols commands gets loaded through the file vmlinux-gdb.py
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# which gets put on the kernel build root when python debugging scripts are enabled.
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cmd.extend(['-ex', 'continue'] + lx_symbols)
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cmd.extend(after)
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return common.run_cmd(cmd, cmd_file=os.path.join(common.run_dir, 'rungdb.sh'), cwd=common.linux_variant_dir)
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if __name__ == '__main__':
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parser = common.get_argparse(argparse_args={'description':'Connect with GDB to an emulator to debug Linux itself'})
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parser.add_argument(
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'-A', '--after', default='',
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help='Pass extra arguments to GDB, to be appended after all other arguments'
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)
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parser.add_argument(
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'-b', '--before', default='',
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help='Pass extra arguments to GDB to be prepended before any of the arguments passed by this script'
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)
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parser.add_argument(
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'-C', '--no-continue', default=False, action='store_true',
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help="Don't run continue after connecting"
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)
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parser.add_argument(
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'-k', '--kgdb', default=False, action='store_true'
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)
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parser.add_argument(
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'-X', '--no-lxsymbols', default=False, action='store_true'
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)
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parser.add_argument(
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'break_at', nargs='?',
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help='Extra options to append at the end of the emulator command line'
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)
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args = common.setup(parser)
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sys.exit(main(args))
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