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diff --git a/src/VBox/VMM/testcase/tstMicro.mac b/src/VBox/VMM/testcase/tstMicro.mac
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+++ b/src/VBox/VMM/testcase/tstMicro.mac
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+; $Id: tstMicro.mac $
+;; @file
+; Micro Testcase, profiling special CPU operations.
+;
+
+;
+; Copyright (C) 2006-2023 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>.
+;
+; SPDX-License-Identifier: GPL-3.0-only
+;
+
+%ifndef __tstMicro_mac__
+%define __tstMicro_mac__
+
+
+struc TSTMICRO
+    .RCPtr                   resd 1
+    .RCPtrStack              resd 1
+    .u64TSCR0Start           resq 1
+    .u64TSCRxStart           resq 1
+    .u64TSCR0Enter           resq 1
+    .u64TSCR0Exit            resq 1
+    .u64TSCRxEnd             resq 1
+    .u64TSCR0End             resq 1
+    .cHits                   resd 1
+    .offEIPAdd               resd 1
+    .u32CR2                  resd 1
+    .u32ErrCd                resd 1
+    .u32EIP                  resd 1
+    .OriginalIDTR            resb 6
+endstruc
+
+
+%endif