diff options
| -rw-r--r-- | scripts/gdb/linux/config.py | 44 | ||||
| -rw-r--r-- | scripts/gdb/vmlinux-gdb.py | 1 |
2 files changed, 45 insertions, 0 deletions
diff --git a/scripts/gdb/linux/config.py b/scripts/gdb/linux/config.py new file mode 100644 index 000000000000..90e1565b1967 --- /dev/null +++ b/scripts/gdb/linux/config.py @@ -0,0 +1,44 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Copyright 2019 Google LLC. + +import gdb +import zlib + +from linux import utils + + +class LxConfigDump(gdb.Command): + """Output kernel config to the filename specified as the command + argument. Equivalent to 'zcat /proc/config.gz > config.txt' on + a running target""" + + def __init__(self): + super(LxConfigDump, self).__init__("lx-configdump", gdb.COMMAND_DATA, + gdb.COMPLETE_FILENAME) + + def invoke(self, arg, from_tty): + if len(arg) == 0: + filename = "config.txt" + else: + filename = arg + + try: + py_config_ptr = gdb.parse_and_eval("kernel_config_data + 8") + py_config_size = gdb.parse_and_eval( + "sizeof(kernel_config_data) - 1 - 8 * 2") + except gdb.error as e: + raise gdb.GdbError("Can't find config, enable CONFIG_IKCONFIG?") + + inf = gdb.inferiors()[0] + zconfig_buf = utils.read_memoryview(inf, py_config_ptr, + py_config_size).tobytes() + + config_buf = zlib.decompress(zconfig_buf, 16) + with open(filename, 'wb') as f: + f.write(config_buf) + + gdb.write("Dumped config to " + filename + "\n") + + +LxConfigDump() diff --git a/scripts/gdb/vmlinux-gdb.py b/scripts/gdb/vmlinux-gdb.py index 6e0b0afd888a..be0efb5dda5b 100644 --- a/scripts/gdb/vmlinux-gdb.py +++ b/scripts/gdb/vmlinux-gdb.py @@ -27,6 +27,7 @@ else: import linux.modules import linux.dmesg import linux.tasks + import linux.config import linux.cpus import linux.lists import linux.proc |