xarray.py

 1# SPDX-License-Identifier: GPL-2.0
 2#
 3#  Xarray helpers
 4#
 5# Copyright (c) 2025 Broadcom
 6#
 7# Authors:
 8#  Florian Fainelli <florian.fainelli@broadcom.com>
 9
10import gdb
11
12from linux import utils
13from linux import constants
14
15def xa_is_internal(entry):
16    ulong_type = utils.get_ulong_type()
17    return ((entry.cast(ulong_type) & 3) == 2)
18
19def xa_mk_internal(v):
20    return ((v << 2) | 2)
21
22def xa_is_zero(entry):
23    ulong_type = utils.get_ulong_type()
24    return entry.cast(ulong_type) == xa_mk_internal(257)
25
26def xa_is_node(entry):
27    ulong_type = utils.get_ulong_type()
28    return xa_is_internal(entry) and (entry.cast(ulong_type) > 4096)