| 1 | # |
| 2 | # Copyright (C) 2025 Linaro Ltd. |
| 3 | # |
| 4 | # SPDX-License-Identifier: GPL-2.0-or-later |
| 5 | |
| 6 | # |
| 7 | # Test the SME2 registers are visible and changeable via gdbstub |
| 8 | # |
| 9 | # This is launched via tests/guest-debug/run-test.py |
| 10 | # |
| 11 | |
| 12 | import gdb |
| 13 | from test_gdbstub import main, report |
| 14 | |
| 15 | |
| 16 | def run_test(): |
| 17 | """Test reads and writes of the SME2 registers""" |
| 18 | frame = gdb.selected_frame() |
| 19 | rname = "zt0" |
| 20 | zt0 = frame.read_register(rname) |
| 21 | report(True, "Reading %s" % rname) |
| 22 | |
| 23 | # Writing to the ZT0 register, byte by byte. |
| 24 | for i in range(0, 64): |
| 25 | cmd = "set $zt0[%d] = 0x01" % (i) |
| 26 | gdb.execute(cmd) |
| 27 | report(True, "%s" % cmd) |
| 28 | |
| 29 | # Reading from the ZT0 register, byte by byte. |
| 30 | for i in range(0, 64): |
| 31 | reg = "$zt0[%d]" % (i) |
| 32 | v = gdb.parse_and_eval(reg) |
| 33 | report(str(v.type) == "uint8_t", "size of %s" % (reg)) |
| 34 | report(v == 0x1, "%s is 0x%x" % (reg, 0x1)) |
| 35 | |
| 36 | main(run_test, expected_arch="aarch64") |