gdb/linux/symbols.py

2 # gdb helper commands and functions for Linux kernel debugging
14 import gdb
21 if hasattr(gdb, 'Breakpoint'):
22     class LoadModuleBreakpoint(gdb.Breakpoint):
29             module = gdb.parse_and_eval("mod")
39             show_pagination = gdb.execute("show pagination", to_string=True)
41             gdb.execute("set pagination off")
44                 gdb.write("refreshing all symbols to reload module "
51             gdb.execute("set pagination %s" % ("on" if pagination else "off"))
56 class LxSymbols(gdb.Command):
71         super(LxSymbols, self).__init__("lx-symbols", gdb.COMMAND_FILES,
72                                         gdb.COMPLETE_FILENAME)
77             gdb.write("scanning for modules in {0}\n".format(path))
95         except gdb.error:
130             gdb.write("loading @{addr}: {filename}\n".format(
135             gdb.execute(cmdline, to_string=True)
139             gdb.write("no module object found for '{0}'\n".format(module_name))
142         gdb.write("loading vmlinux\n")
147         if hasattr(gdb, 'breakpoints') and not gdb.breakpoints() is None:
148             for bp in gdb.breakpoints():
153         for obj in gdb.objfiles():
157         gdb.execute("symbol-file", to_string=True)
158         gdb.execute("symbol-file {0}".format(orig_vmlinux))
163             gdb.write("no modules found\n")
181         if hasattr(gdb, 'Breakpoint'):
188             gdb.write("Note: symbol update on module loading not supported "
189                       "with this gdb version\n")