1 files changed, 105 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-first-pe16.asm b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-first-pe16.asm
new file mode 100644
index 00000000..cad3787e
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-first-pe16.asm
@@ -0,0 +1,105 @@
+; $Id: bs3-first-pe16.asm $
+;; @file
+; BS3Kit - First Object, calling 16-bit protected-mode main().
+;
+
+;
+; 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                                                                                                                 *
+;*********************************************************************************************************************************
+
+;
+; Segment defs, grouping and related variables.
+; Defines the entry point 'start' as well, leaving us in BS3TEXT16.
+;
+%include "bs3-first-common.mac"
+
+
+;*********************************************************************************************************************************
+;*  External Symbols                                                                                                             *
+;*********************************************************************************************************************************
+BS3_BEGIN_DATA16
+
+BS3_BEGIN_RMTEXT16
+extern _Bs3CpuDetect_rm_far
+extern _Bs3InitMemory_rm_far
+
+BS3_BEGIN_TEXT16
+BS3_EXTERN_CMN Bs3PicMaskAll
+BS3_EXTERN_CMN Bs3Trap16Init
+extern _Bs3SwitchToPE16_rm
+extern _Main_pe16
+BS3_EXTERN_CMN Bs3Shutdown
+
+
+BS3_BEGIN_TEXT16
+    ;
+    ; Zero return address and zero caller BP.
+    ;
+    xor     ax, ax
+    push    ax
+    push    ax
+    mov     bp, sp
+
+    ;
+    ; Load DS and ES with data selectors.
+    ;
+    mov     ax, BS3KIT_GRPNM_DATA16
+    mov     ds, ax
+    mov     es, ax
+
+
+    ;
+    ; Make sure interrupts are disabled as we cannot (don't want to) service
+    ; BIOS interrupts once we switch mode.
+    ;
+    cli
+    call    Bs3PicMaskAll
+
+    ;
+    ; Initialize 16-bit protected mode.
+    ;
+    call far _Bs3CpuDetect_rm_far
+    call far _Bs3InitMemory_rm_far
+    call    Bs3Trap16Init
+
+    ;
+    ; Switch to PE16 and call main.
+    ;
+    call    _Bs3SwitchToPE16_rm
+    call    _Main_pe16
+
+    ; Try shutdown if it returns.
+    call    Bs3Shutdown
+