3rd-party/linux-kernel-module-cheat
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run: OK, I give in, --debug-vm-file is on

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Ciro Santilli 六四事件 法轮功
2019-12-24 00:00:01 +00:00
parent 8c87bdf2d3
commit 90f3701f83
2 changed files with 23 additions and 3 deletions
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9
README.adoc
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@@ -9922,6 +9922,15 @@ Or for a faster development loop:
./run --debug-vm-args '-ex "break qemu_add_opts" -ex "run"' ./run --debug-vm-args '-ex "break qemu_add_opts" -ex "run"'
.... ....
Or if things get really involved and you want a debug script:
....
printf 'break qemu_add_opts
run
' > data/vm.gdb
./run --debug-vm-file data/vm.gdb
....
Our default emulator builds are optimized with `gcc -O2 -g`. To use `-O0` instead, build and run with: Our default emulator builds are optimized with `gcc -O2 -g`. To use `-O0` instead, build and run with:
.... ....

17
run
View File

@@ -38,12 +38,20 @@ Ctrl + C kills the QEMU simulator instead of being passed to the guest.
help='''\ help='''\
Run GDB on the emulator itself. Run GDB on the emulator itself.
For --emulator native, this debugs the target program. For --emulator native, this debugs the target program.
See also: https://cirosantilli.com/linux-kernel-module-cheat#debug-the-emulator
''' '''
) )
self.add_argument( self.add_argument(
'--debug-vm-args', '--debug-vm-args',
default='', default='',
help='Pass arguments to GDB. Implies --debug-vm.' help='Like --debug-vm, but also pass arguments to GDB'
)
self.add_argument(
'--debug-vm-file',
help='''\
Like --debug-vm, but also source this file. Equivalent to
--debug-vm-args='-ex "source $file"'.
'''
) )
self.add_argument( self.add_argument(
'--debug-vm-rr', '--debug-vm-rr',
@@ -362,8 +370,11 @@ Extra options to append at the end of the emulator command line.
self.env['tmux'] = True self.env['tmux'] = True
if self.env['debug_vm_rr']: if self.env['debug_vm_rr']:
debug_vm = ['rr', 'record'] debug_vm = ['rr', 'record']
elif self.env['debug_vm'] or self.env['debug_vm_args']: elif self.env['debug_vm'] or self.env['debug_vm_args'] or self.env['debug_vm_file']:
debug_vm = ['gdb', LF, '-q', LF] + self.sh.shlex_split(self.env['debug_vm_args']) + ['--args', LF] debug_vm = ['gdb', LF, '-q', LF] + self.sh.shlex_split(self.env['debug_vm_args'])
if self.env['debug_vm_file'] is not None:
debug_vm.extend(['-ex', 'source {}'.format(self.env['debug_vm_file']), LF])
debug_vm.extend(['--args', LF])
else: else:
debug_vm = [] debug_vm = []
if self.env['gdb_wait']: if self.env['gdb_wait']: