1 files changed, 66 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxSetMm.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxSetMm.c
new file mode 100644
index 00000000..0c37f230
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-ExtCtxSetMm.c
@@ -0,0 +1,66 @@
+/* $Id: bs3-cmn-ExtCtxSetMm.c $ */
+/** @file
+ * BS3Kit - Bs3ExtCtxSetMm
+ */
+
+/*
+ * 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
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "bs3kit-template-header.h"
+
+
+#undef Bs3ExtCtxSetMm
+BS3_CMN_DEF(bool, Bs3ExtCtxSetMm,(PBS3EXTCTX pExtCtx, uint8_t iReg, uint64_t uValue, BS3EXTCTXTOPMM enmTop))
+{
+    AssertCompileMembersAtSameOffset(BS3EXTCTX, Ctx.x87.aRegs, BS3EXTCTX, Ctx.x.x87.aRegs);
+    if (iReg < RT_ELEMENTS(pExtCtx->Ctx.x87.aRegs))
+        switch (pExtCtx->enmMethod)
+        {
+            case BS3EXTCTXMETHOD_FXSAVE:
+            case BS3EXTCTXMETHOD_XSAVE:
+                pExtCtx->Ctx.x87.aRegs[iReg].mmx = uValue;
+                if (enmTop == BS3EXTCTXTOPMM_SET || enmTop == BS3EXTCTXTOPMM_ZERO)
+                    pExtCtx->Ctx.x87.aRegs[iReg].au16[4] = enmTop == BS3EXTCTXTOPMM_SET ? UINT16_MAX : 0;
+                return true;
+
+            case BS3EXTCTXMETHOD_ANCIENT:
+                pExtCtx->Ctx.Ancient.regs[iReg].mmx = uValue;
+                if (enmTop == BS3EXTCTXTOPMM_SET || enmTop == BS3EXTCTXTOPMM_ZERO)
+                    pExtCtx->Ctx.Ancient.regs[iReg].au16[4] = enmTop == BS3EXTCTXTOPMM_SET ? UINT16_MAX : 0;
+                return true;
+        }
+    return false;
+}
+