2 # gdb helper commands and functions for Linux kernel debugging
6 # Copyright (c) Siemens AG, 2013
9 # Jan Kiszka <jan.kiszka@siemens.com>
11 # This work is licensed under the terms of the GNU GPL version 2.
16 from linux import utils
19 module_type = utils.CachedType("struct module")
25 self.module_ptr_type = module_type.get_type().pointer()
26 modules = gdb.parse_and_eval("modules")
27 self.curr_entry = modules['next']
28 self.end_of_list = modules.address
34 entry = self.curr_entry
35 if entry != self.end_of_list:
36 self.curr_entry = entry['next']
37 return utils.container_of(entry, self.module_ptr_type, "list")
42 def find_module_by_name(name):
43 for module in ModuleList():
44 if module['name'].string() == name:
49 class LxModule(gdb.Function):
50 """Find module by name and return the module variable.
52 $lx_module("MODULE"): Given the name MODULE, iterate over all loaded modules
53 of the target and return that module variable which MODULE matches."""
56 super(LxModule, self).__init__("lx_module")
58 def invoke(self, mod_name):
59 mod_name = mod_name.string()
60 module = find_module_by_name(mod_name)
62 return module.dereference()
64 raise gdb.GdbError("Unable to find MODULE " + mod_name)