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Diffstat (limited to '')
-rw-r--r-- | src/VBox/ValidationKit/bootsectors/bs3kit/bs3cpudt.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3cpudt.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3cpudt.c new file mode 100644 index 00000000..b4210da7 --- /dev/null +++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3cpudt.c @@ -0,0 +1,71 @@ +/* $Id: bs3cpudt.c $ */ +/** @file + * BS3Kit - Tests Bs3CpuDetect_rm. + */ + +/* + * Copyright (C) 2007-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * 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, in version 3 of the + * License. + * + * 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, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ + +#include "bs3kit.h" +#include <stdio.h> +#include <stdint.h> + + +unsigned StoreMsw(void); +#pragma aux StoreMsw = \ + ".286" \ + "smsw ax" \ + value [ax]; + +void LoadMsw(unsigned); +#pragma aux LoadMsw = \ + ".286p" \ + "lmsw ax" \ + parm [ax]; + +int main() +{ + uint16_t volatile usCpu = Bs3CpuDetect_rm(); + printf("usCpu=%#x\n", usCpu); + if ((usCpu & BS3CPU_TYPE_MASK) >= BS3CPU_80286) + { + printf("(42=%d) msw=%#x (42=%d)\n", 42, StoreMsw(), 42); + LoadMsw(0); + printf("lmsw 0 => msw=%#x (42=%d)\n", StoreMsw(), 42); + } + return 0; +} + |