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Diffstat (limited to '')
-rw-r--r-- | src/VBox/ValidationKit/utils/dos/DosVmOff.asm | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/utils/dos/DosVmOff.asm b/src/VBox/ValidationKit/utils/dos/DosVmOff.asm new file mode 100644 index 00000000..1958f9ce --- /dev/null +++ b/src/VBox/ValidationKit/utils/dos/DosVmOff.asm @@ -0,0 +1,79 @@ +; $Id: DosVmOff.asm $ +;; @file +; 16-bit DOS COM program that powers off the VM. +; +; Build: yasm -f bin -i../../../../../include/ DosVmOff.asm -o DosVmOff.com +; + +; +; Copyright (C) 2018-2023 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 +; + + + +%include "VBox/bios.mac" + + org 100h + +segment text +main: +%if 0 + ; Setup stack. + mov ax, stack + mov ss, ax + mov sp, top_of_stack +%endif + + ; Do the shutdown thing. + mov ax, cs + mov ds, ax + + mov bl, 64 + mov dx, VBOX_BIOS_SHUTDOWN_PORT + mov ax, VBOX_BIOS_OLD_SHUTDOWN_PORT +.retry: + mov cx, 8 + mov si, .s_szShutdown + rep outsb + xchg ax, dx ; alternate between the new (VBox) and old (Bochs) ports. + dec bl + jnz .retry + + + ; Probably not a VBox VM, exit the program with errorlevel 1. +.whatever: + mov ax, 04c01h + int 021h + hlt + jmp .whatever + +.s_szShutdown: + db 'Shutdown', 0 + |