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diff --git a/src/VBox/ValidationKit/bootsectors/bootsector2-structures.mac b/src/VBox/ValidationKit/bootsectors/bootsector2-structures.mac
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+; $Id: bootsector2-structures.mac $
+;; @file
+; Common structures.
+;
+
+;
+; 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
+;
+
+%ifndef ___bootsector2_structures_mac___
+%define ___bootsector2_structures_mac___
+
+
+;;
+; Registers.  Used by traps and such.
+;
+struc BS2REGS
+        .rax    resq 1
+        .rbx    resq 1
+        .rcx    resq 1
+        .rdx    resq 1
+        .rdi    resq 1
+        .rsi    resq 1
+        .rbp    resq 1
+        .rsp    resq 1
+        .rip    resq 1
+        .r8     resq 1
+        .r9     resq 1
+        .r10    resq 1
+        .r11    resq 1
+        .r12    resq 1
+        .r13    resq 1
+        .r14    resq 1
+        .r15    resq 1
+        .rflags resq 1
+        .cs     resw 1
+        .ds     resw 1
+        .es     resw 1
+        .fs     resw 1
+        .gs     resw 1
+        .ss     resw 1
+        .cBits  resb 1
+        .pad    resb 3
+        .cr0    resq 1
+        .cr2    resq 1
+        .cr3    resq 1
+        .cr4    resq 1
+        .cr8    resq 1
+        ;; @todo Add floating point registers when they are active.
+endstruc
+
+
+
+;;
+; Trap record.
+;
+struc BS2TRAPREC
+        ;; The trap location relative to the base address given at
+        ; registration time.
+        .offWhere               resd 1
+        ;; What to add to .offWhere to calculate the resume address.
+        .offResumeAddend        resb 1
+        ;; The trap number.
+        .u8TrapNo               resb 1
+        ;; The error code if the trap takes one.
+        .u16ErrCd               resw 1
+endstruc
+
+;; The size shift.
+%define BS2TRAPREC_SIZE_SHIFT   3
+
+
+%endif
+