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diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxGetAbridgedFtw.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxGetAbridgedFtw.c
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+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxGetAbridgedFtw.c
@@ -0,0 +1,71 @@
+/* $Id: bs3-cmn-ExtCtxGetAbridgedFtw.c $ */
+/** @file
+ * BS3Kit - Bs3ExtCtxGetAbridgedFtw
+ */
+
+/*
+ * 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 *
+*********************************************************************************************************************************/
+#include "bs3kit-template-header.h"
+
+
+#undef Bs3ExtCtxGetAbridgedFtw
+BS3_CMN_DEF(uint16_t, Bs3ExtCtxGetAbridgedFtw,(PCBS3EXTCTX pExtCtx))
+{
+ AssertCompileMembersAtSameOffset(BS3EXTCTX, Ctx.x87.FTW, BS3EXTCTX, Ctx.x.x87.FTW);
+ switch (pExtCtx->enmMethod)
+ {
+ case BS3EXTCTXMETHOD_FXSAVE:
+ case BS3EXTCTXMETHOD_XSAVE:
+ return pExtCtx->Ctx.x87.FTW;
+
+ case BS3EXTCTXMETHOD_ANCIENT:
+ {
+ /* iemFpuCompressFtw: */
+ uint16_t u16FullFtw = pExtCtx->Ctx.Ancient.FTW;
+ uint8_t u8Ftw = 0;
+ unsigned i;
+ for (i = 0; i < 8; i++)
+ {
+ if ((u16FullFtw & 3) != 3 /*empty*/)
+ u8Ftw |= RT_BIT(i);
+ u16FullFtw >>= 2;
+ }
+ return u8Ftw;
+ }
+ }
+ return 0;
+}
+