forked from mirrors/linux
7b599ef535
Add the internal helper get_module_by_name to obtain the module structure corresponding to the given name. Also export this service as a convenience function. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: Ben Widawsky <ben@bwidawsk.net> Cc: Borislav Petkov <bp@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
67 lines
1.6 KiB
Python
67 lines
1.6 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 utils
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module_type = utils.CachedType("struct module")
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class ModuleList:
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def __init__(self):
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global module_type
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self.module_ptr_type = module_type.get_type().pointer()
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modules = gdb.parse_and_eval("modules")
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self.curr_entry = modules['next']
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self.end_of_list = modules.address
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def __iter__(self):
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return self
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def next(self):
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entry = self.curr_entry
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if entry != self.end_of_list:
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self.curr_entry = entry['next']
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return utils.container_of(entry, self.module_ptr_type, "list")
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else:
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raise StopIteration
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def find_module_by_name(name):
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for module in ModuleList():
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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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