Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) # gdb helper commands and functions for Linux kernel debugging
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #  module tools
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) # Copyright (c) Siemens AG, 2013
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) # Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #  Jan Kiszka <jan.kiszka@siemens.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) # This work is licensed under the terms of the GNU GPL version 2.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) import gdb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) from linux import cpus, utils, lists
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) module_type = utils.CachedType("struct module")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) def module_list():
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)     global module_type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)     modules = utils.gdb_eval_or_none("modules")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)     if modules is None:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)         return
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)     module_ptr_type = module_type.get_type().pointer()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30)     for module in lists.list_for_each_entry(modules, module_ptr_type, "list"):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)         yield module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) def find_module_by_name(name):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35)     for module in module_list():
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)         if module['name'].string() == name:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)             return module
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)     return None
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) class LxModule(gdb.Function):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42)     """Find module by name and return the module variable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) $lx_module("MODULE"): Given the name MODULE, iterate over all loaded modules
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) of the target and return that module variable which MODULE matches."""
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)     def __init__(self):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48)         super(LxModule, self).__init__("lx_module")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)     def invoke(self, mod_name):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)         mod_name = mod_name.string()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)         module = find_module_by_name(mod_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53)         if module:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)             return module.dereference()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)         else:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)             raise gdb.GdbError("Unable to find MODULE " + mod_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) LxModule()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) class LxLsmod(gdb.Command):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63)     """List currently loaded modules."""
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)     _module_use_type = utils.CachedType("struct module_use")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)     def __init__(self):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)         super(LxLsmod, self).__init__("lx-lsmod", gdb.COMMAND_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)     def invoke(self, arg, from_tty):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71)         gdb.write(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)             "Address{0}    Module                  Size  Used by\n".format(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)                 "        " if utils.get_long_type().sizeof == 8 else ""))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)         for module in module_list():
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)             layout = module['core_layout']
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)             gdb.write("{address} {name:<19} {size:>8}  {ref}".format(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)                 address=str(layout['base']).split()[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)                 name=module['name'].string(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)                 size=str(layout['size']),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)                 ref=str(module['refcnt']['counter'] - 1)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83)             t = self._module_use_type.get_type().pointer()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)             first = True
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)             sources = module['source_list']
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)             for use in lists.list_for_each_entry(sources, t, "source_list"):
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)                 gdb.write("{separator}{name}".format(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88)                     separator=" " if first else ",",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)                     name=use['source']['name'].string()))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90)                 first = False
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)             gdb.write("\n")
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) LxLsmod()