]> Git Repo - J-linux.git/blob - scripts/gdb/linux/stackdepot.py
Merge tag 'drm-next-2024-07-26' of https://gitlab.freedesktop.org/drm/kernel
[J-linux.git] / scripts / gdb / linux / stackdepot.py
1 # SPDX-License-Identifier: GPL-2.0
2 #
3 # Copyright (c) 2023 MediaTek Inc.
4 #
5 # Authors:
6 #  Kuan-Ying Lee <[email protected]>
7 #
8
9 import gdb
10 from linux import utils, constants
11
12 if constants.LX_CONFIG_STACKDEPOT:
13     stack_record_type = utils.CachedType('struct stack_record')
14     DEPOT_STACK_ALIGN = 4
15
16 def stack_depot_fetch(handle):
17     global DEPOT_STACK_ALIGN
18     global stack_record_type
19
20     stack_depot_disabled = gdb.parse_and_eval('stack_depot_disabled')
21
22     if stack_depot_disabled:
23         raise gdb.GdbError("stack_depot_disabled\n")
24
25     handle_parts_t = gdb.lookup_type("union handle_parts")
26     parts = handle.cast(handle_parts_t)
27     offset = parts['offset'] << DEPOT_STACK_ALIGN
28     pools_num = gdb.parse_and_eval('pools_num')
29
30     if handle == 0:
31         raise gdb.GdbError("handle is 0\n")
32
33     pool_index = parts['pool_index_plus_1'] - 1
34     if pool_index >= pools_num:
35         gdb.write("pool index %d out of bounds (%d) for stack id 0x%08x\n" % (parts['pool_index'], pools_num, handle))
36         return gdb.Value(0), 0
37
38     stack_pools = gdb.parse_and_eval('stack_pools')
39
40     try:
41         pool = stack_pools[pool_index]
42         stack = (pool + gdb.Value(offset).cast(utils.get_size_t_type())).cast(stack_record_type.get_type().pointer())
43         size = int(stack['size'].cast(utils.get_ulong_type()))
44         return stack['entries'], size
45     except Exception as e:
46         gdb.write("%s\n" % e)
47         return gdb.Value(0), 0
48
49 def stack_depot_print(handle):
50     if not constants.LX_CONFIG_STACKDEPOT:
51         raise gdb.GdbError("CONFIG_STACKDEPOT is not enabled")
52
53     entries, nr_entries = stack_depot_fetch(handle)
54     if nr_entries > 0:
55         for i in range(0, nr_entries):
56             try:
57                 gdb.execute("x /i 0x%x" % (int(entries[i])))
58             except Exception as e:
59                 gdb.write("%s\n" % e)
This page took 0.030047 seconds and 4 git commands to generate.