From 66a2ff442dca892d242e39dddfdbb15eb338ffe2 Mon Sep 17 00:00:00 2001 From: Michael Brown Date: Tue, 31 Jan 2023 10:17:57 +0000 Subject: [tests] Verify ability to sleep the CPU The self-test suite does not currently ever attempt to sleep the CPU. This is an operation that may fail (e.g. by attempting to execute a privileged instruction while running as a Linux userspace binary, or by halting the CPU with all interrupts disabled). Add a trivial self-test to exercise the ability to sleep the CPU without crashing or halting forever. Inspired-by: Xiaotian Wu Signed-off-by: Michael Brown --- src/tests/nap_test.c | 53 ++++++++++++++++++++++++++++++++++++++++++++++++++++ src/tests/tests.c | 1 + 2 files changed, 54 insertions(+) create mode 100644 src/tests/nap_test.c diff --git a/src/tests/nap_test.c b/src/tests/nap_test.c new file mode 100644 index 0000000..16406a8 --- /dev/null +++ b/src/tests/nap_test.c @@ -0,0 +1,53 @@ +/* + * Copyright (C) 2023 Michael Brown . + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of the + * License, or any later version. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA. + * + * You can also choose to distribute this program under the terms of + * the Unmodified Binary Distribution Licence (as given in the file + * COPYING.UBDL), provided that you have satisfied its requirements. + */ + +FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL ); + +/** @file + * + * CPU sleeping test + * + */ + +/* Forcibly enable assertions */ +#undef NDEBUG + +#include +#include + +/** + * Perform CPU sleeping self-test + * + */ +static void nap_test_exec ( void ) { + + /* Check that we can sleep without crashing or halting forever */ + cpu_nap(); + ok ( 1 ); +} + +/** CPU sleeping self-test */ +struct self_test nap_test __self_test = { + .name = "nap", + .exec = nap_test_exec, +}; diff --git a/src/tests/tests.c b/src/tests/tests.c index 187037d..fbdf562 100644 --- a/src/tests/tests.c +++ b/src/tests/tests.c @@ -80,3 +80,4 @@ REQUIRE_OBJECT ( acpi_test ); REQUIRE_OBJECT ( hmac_test ); REQUIRE_OBJECT ( dhe_test ); REQUIRE_OBJECT ( gcm_test ); +REQUIRE_OBJECT ( nap_test ); -- cgit v1.1