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 9import gdb 10from linux import utils, constants 11 12if constants.LX_CONFIG_STACKDEPOT: 13 stack_record_type = utils.CachedType('struct stack_record') 14 DEPOT_STACK_ALIGN = 4 15 16def 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 49def 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) 60