1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 # 2 #
3 # Copyright (c) 2023 MediaTek Inc. 3 # Copyright (c) 2023 MediaTek Inc.
4 # 4 #
5 # Authors: 5 # Authors:
6 # Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com> 6 # Kuan-Ying Lee <Kuan-Ying.Lee@mediatek.com>
7 # 7 #
8 8
9 import gdb 9 import gdb
10 from linux import utils, constants 10 from linux import utils, constants
11 11
12 if constants.LX_CONFIG_STACKDEPOT: 12 if constants.LX_CONFIG_STACKDEPOT:
13 stack_record_type = utils.CachedType('stru 13 stack_record_type = utils.CachedType('struct stack_record')
14 DEPOT_STACK_ALIGN = 4 14 DEPOT_STACK_ALIGN = 4
15 15
16 def help(): <<
17 t = """Usage: lx-stack_depot_lookup [Hex h <<
18 Example: <<
19 lx-stack_depot_lookup 0x00c80300\n""" <<
20 gdb.write("Unrecognized command\n") <<
21 raise gdb.GdbError(t) <<
22 <<
23 def stack_depot_fetch(handle): 16 def stack_depot_fetch(handle):
24 global DEPOT_STACK_ALIGN 17 global DEPOT_STACK_ALIGN
25 global stack_record_type 18 global stack_record_type
26 19
27 stack_depot_disabled = gdb.parse_and_eval( 20 stack_depot_disabled = gdb.parse_and_eval('stack_depot_disabled')
28 21
29 if stack_depot_disabled: 22 if stack_depot_disabled:
30 raise gdb.GdbError("stack_depot_disabl 23 raise gdb.GdbError("stack_depot_disabled\n")
31 24
32 handle_parts_t = gdb.lookup_type("union ha 25 handle_parts_t = gdb.lookup_type("union handle_parts")
33 parts = handle.cast(handle_parts_t) 26 parts = handle.cast(handle_parts_t)
34 offset = parts['offset'] << DEPOT_STACK_AL 27 offset = parts['offset'] << DEPOT_STACK_ALIGN
35 pools_num = gdb.parse_and_eval('pools_num' !! 28 pool_index_cached = gdb.parse_and_eval('pool_index')
36 <<
37 if handle == 0: <<
38 raise gdb.GdbError("handle is 0\n") <<
39 29
40 pool_index = parts['pool_index_plus_1'] - !! 30 if parts['pool_index'] > pool_index_cached:
41 if pool_index >= pools_num: !! 31 gdb.write("pool index %d out of bounds (%d) for stack id 0x%08x\n" % (parts['pool_index'], pool_index_cached, handle))
42 gdb.write("pool index %d out of bounds <<
43 return gdb.Value(0), 0 32 return gdb.Value(0), 0
44 33
45 stack_pools = gdb.parse_and_eval('stack_po 34 stack_pools = gdb.parse_and_eval('stack_pools')
46 35
47 try: 36 try:
48 pool = stack_pools[pool_index] !! 37 pool = stack_pools[parts['pool_index']]
49 stack = (pool + gdb.Value(offset).cast 38 stack = (pool + gdb.Value(offset).cast(utils.get_size_t_type())).cast(stack_record_type.get_type().pointer())
50 size = int(stack['size'].cast(utils.ge 39 size = int(stack['size'].cast(utils.get_ulong_type()))
51 return stack['entries'], size 40 return stack['entries'], size
52 except Exception as e: 41 except Exception as e:
53 gdb.write("%s\n" % e) 42 gdb.write("%s\n" % e)
54 return gdb.Value(0), 0 43 return gdb.Value(0), 0
55 44
56 def stack_depot_print(handle): 45 def stack_depot_print(handle):
57 if not constants.LX_CONFIG_STACKDEPOT: 46 if not constants.LX_CONFIG_STACKDEPOT:
58 raise gdb.GdbError("CONFIG_STACKDEPOT 47 raise gdb.GdbError("CONFIG_STACKDEPOT is not enabled")
59 48
60 entries, nr_entries = stack_depot_fetch(ha 49 entries, nr_entries = stack_depot_fetch(handle)
61 if nr_entries > 0: 50 if nr_entries > 0:
62 for i in range(0, nr_entries): 51 for i in range(0, nr_entries):
63 try: 52 try:
64 gdb.execute("x /i 0x%x" % (int 53 gdb.execute("x /i 0x%x" % (int(entries[i])))
65 except Exception as e: 54 except Exception as e:
66 gdb.write("%s\n" % e) 55 gdb.write("%s\n" % e)
67 <<
68 class StackDepotLookup(gdb.Command): <<
69 """Search backtrace by handle""" <<
70 <<
71 def __init__(self): <<
72 if constants.LX_CONFIG_STACKDEPOT: <<
73 super(StackDepotLookup, self).__in <<
74 <<
75 def invoke(self, args, from_tty): <<
76 if not constants.LX_CONFIG_STACKDEPOT: <<
77 raise gdb.GdbError('CONFIG_STACKDE <<
78 <<
79 argv = gdb.string_to_argv(args) <<
80 if len(argv) == 1: <<
81 handle = int(argv[0], 16) <<
82 stack_depot_print(gdb.Value(handle <<
83 else: <<
84 help() <<
85 <<
86 StackDepotLookup() <<
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