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b4aff7513d
commitac3b432839("module: replace module_layout with module_memory") changed the struct module data structure from module_layout to module_memory. The core_layout member which is used while loading modules are not available anymore leading to the following error while running gdb: (gdb) lx-symbols loading vmlinux Python Exception <class 'gdb.error'>: There is no member named core_layout. Error occurred in Python: There is no member named core_layout. Replace core_layout with its new counterpart mem[MOD_TEXT]. Fixes:ac3b432839("module: replace module_layout with module_memory") Signed-off-by: Pankaj Raghav <p.raghav@samsung.com> Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
95 lines
2.6 KiB
Python
95 lines
2.6 KiB
Python
#
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# gdb helper commands and functions for Linux kernel debugging
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#
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# module tools
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#
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# Copyright (c) Siemens AG, 2013
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#
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# Authors:
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# Jan Kiszka <jan.kiszka@siemens.com>
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#
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# This work is licensed under the terms of the GNU GPL version 2.
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#
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import gdb
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from linux import cpus, utils, lists, constants
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module_type = utils.CachedType("struct module")
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def module_list():
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global module_type
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modules = utils.gdb_eval_or_none("modules")
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if modules is None:
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return
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module_ptr_type = module_type.get_type().pointer()
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for module in lists.list_for_each_entry(modules, module_ptr_type, "list"):
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yield module
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def find_module_by_name(name):
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for module in module_list():
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if module['name'].string() == name:
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return module
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return None
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class LxModule(gdb.Function):
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"""Find module by name and return the module variable.
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$lx_module("MODULE"): Given the name MODULE, iterate over all loaded modules
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of the target and return that module variable which MODULE matches."""
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def __init__(self):
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super(LxModule, self).__init__("lx_module")
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def invoke(self, mod_name):
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mod_name = mod_name.string()
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module = find_module_by_name(mod_name)
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if module:
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return module.dereference()
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else:
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raise gdb.GdbError("Unable to find MODULE " + mod_name)
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LxModule()
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class LxLsmod(gdb.Command):
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"""List currently loaded modules."""
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_module_use_type = utils.CachedType("struct module_use")
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def __init__(self):
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super(LxLsmod, self).__init__("lx-lsmod", gdb.COMMAND_DATA)
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def invoke(self, arg, from_tty):
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gdb.write(
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"Address{0} Module Size Used by\n".format(
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" " if utils.get_long_type().sizeof == 8 else ""))
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for module in module_list():
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layout = module['mem'][constants.LX_MOD_TEXT]
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gdb.write("{address} {name:<19} {size:>8} {ref}".format(
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address=str(layout['base']).split()[0],
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name=module['name'].string(),
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size=str(layout['size']),
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ref=str(module['refcnt']['counter'] - 1)))
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t = self._module_use_type.get_type().pointer()
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first = True
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sources = module['source_list']
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for use in lists.list_for_each_entry(sources, t, "source_list"):
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gdb.write("{separator}{name}".format(
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separator=" " if first else ",",
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name=use['source']['name'].string()))
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first = False
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gdb.write("\n")
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LxLsmod()
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