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https://github.com/cirosantilli/linux-kernel-module-cheat.git
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47 lines
1.3 KiB
Python
Executable File
47 lines
1.3 KiB
Python
Executable File
#!/usr/bin/env python3
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import imp
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import os
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import subprocess
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import re
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import common
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rungdb = imp.load_source('rungdb', os.path.join(common.root_dir, 'rungdb'))
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parser = common.get_argparse(argparse_args={
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'description': '''GDB step debug guest userland processes without gdbserver.
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More information at: https://github.com/cirosantilli/linux-kernel-module-cheat#gdb-step-debug-userland-processes
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'''
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})
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parser.add_argument(
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'executable',
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help='Path to the executable to be debugged relative to the Buildroot build directory.'
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)
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parser.add_argument(
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'break',
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default=None,
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help='Break at this point, e.g. main.',
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nargs='?'
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)
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args = common.setup(parser)
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readelf_header = subprocess.check_output([
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common.get_toolchain_tool('readelf'),
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'-h',
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os.path.join(common.build_dir, args.executable),
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])
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for line in readelf_header.decode().split('\n'):
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split = line.split()
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if line.startswith(' Entry point address:'):
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addr = line.split()[-1]
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break
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print(addr)
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extra_args = {}
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extra_args['before'] = '-ex \"add-symbol-file {} {}\"'.format(args.executable, addr)
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# Or else lx-symbols throws for arm:
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# gdb.MemoryError: Cannot access memory at address 0xbf0040cc
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# TODO understand better.
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# Also, lx-symbols overrides the add-symbol-file commands.
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extra_args['no_lxsymbols'] = True
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rungdb.main(args, extra_args)
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