| # SPDX-License-Identifier: GPL-2.0 |
| # |
| # Copyright (c) 2023 MediaTek Inc. |
| # |
| # Authors: |
| # Kuan-Ying Lee <[email protected]> |
| # |
| |
| import gdb |
| from linux import utils, constants |
| |
| if constants.LX_CONFIG_STACKDEPOT: |
| stack_record_type = utils.CachedType('struct stack_record') |
| DEPOT_STACK_ALIGN = 4 |
| |
| def stack_depot_fetch(handle): |
| global DEPOT_STACK_ALIGN |
| global stack_record_type |
| |
| stack_depot_disabled = gdb.parse_and_eval('stack_depot_disabled') |
| |
| if stack_depot_disabled: |
| raise gdb.GdbError("stack_depot_disabled\n") |
| |
| handle_parts_t = gdb.lookup_type("union handle_parts") |
| parts = handle.cast(handle_parts_t) |
| offset = parts['offset'] << DEPOT_STACK_ALIGN |
| pool_index_cached = gdb.parse_and_eval('pool_index') |
| |
| if parts['pool_index'] > pool_index_cached: |
| gdb.write("pool index %d out of bounds (%d) for stack id 0x%08x\n" % (parts['pool_index'], pool_index_cached, handle)) |
| return gdb.Value(0), 0 |
| |
| stack_pools = gdb.parse_and_eval('stack_pools') |
| |
| try: |
| pool = stack_pools[parts['pool_index']] |
| stack = (pool + gdb.Value(offset).cast(utils.get_size_t_type())).cast(stack_record_type.get_type().pointer()) |
| size = int(stack['size'].cast(utils.get_ulong_type())) |
| return stack['entries'], size |
| except Exception as e: |
| gdb.write("%s\n" % e) |
| return gdb.Value(0), 0 |
| |
| def stack_depot_print(handle): |
| if not constants.LX_CONFIG_STACKDEPOT: |
| raise gdb.GdbError("CONFIG_STACKDEPOT is not enabled") |
| |
| entries, nr_entries = stack_depot_fetch(handle) |
| if nr_entries > 0: |
| for i in range(0, nr_entries): |
| try: |
| gdb.execute("x /i 0x%x" % (int(entries[i]))) |
| except Exception as e: |
| gdb.write("%s\n" % e) |
