1 files changed, 59 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-first-rm.asm b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-first-rm.asm
new file mode 100644
index 00000000..2b2a6159
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-first-rm.asm
@@ -0,0 +1,59 @@
+; $Id: bs3-first-rm.asm $
+;; @file
+; BS3Kit - First Object, calling real-mode main().
+;
+
+;
+; Copyright (C) 2007-2022 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
+;
+
+
+;
+; Segment defs, grouping and related variables.
+; Defines the entry point 'start' as well, leaving us in BS3TEXT16.
+;
+%include "bs3-first-common.mac"
+
+
+EXTERN Main_rm
+BS3_EXTERN_CMN Bs3Shutdown
+        push    word 0                  ; zero return address.
+        push    word 0                  ; zero caller BP
+        mov     bp, sp
+
+        ;
+        ; Nothing to init here, just call main and shutdown if it returns.
+        ;
+        mov     ax, BS3_SEL_DATA16
+        mov     es, ax
+        mov     ds, ax
+        call    NAME(Main_rm)
+        call    Bs3Shutdown
+