1 files changed, 75 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c
new file mode 100644
index 00000000..9c9f525d
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxSetGrpSegFromFlat.c
@@ -0,0 +1,75 @@
+/* $Id: bs3-cmn-RegCtxSetGrpSegFromFlat.c $ */
+/** @file
+ * BS3Kit - Bs3RegCtxSetGrpSegFromFlat
+ */
+
+/*
+ * 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 Bs3RegCtxSetGrpSegFromFlat
+BS3_CMN_DEF(void, Bs3RegCtxSetGrpSegFromFlat,(PBS3REGCTX pRegCtx, PBS3REG pGpr, PRTSEL pSel, RTCCUINTXREG uFlat))
+{
+    if (BS3_MODE_IS_16BIT_CODE(pRegCtx->bMode))
+    {
+        uint32_t uFar1616;
+        if (BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
+            uFar1616 = Bs3SelFlatDataToRealMode(uFlat);
+        else
+            uFar1616 = Bs3SelFlatDataToProtFar16(uFlat);
+        pGpr->u  = uFar1616 & UINT16_MAX;
+        *pSel    = uFar1616 >> 16;
+    }
+    else
+    {
+        pGpr->u  = uFlat;
+        if (BS3_MODE_IS_32BIT_CODE(pRegCtx->bMode))
+            *pSel = BS3_SEL_R0_DS32;
+        else
+            *pSel = BS3_SEL_R0_DS64;
+    }
+
+    /* Adjust CS to the right ring, if not ring-0 or V86 context. */
+    if (   pRegCtx->bCpl != 0
+        && !BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
+    {
+        if (BS3_SEL_IS_IN_R0_RANGE(*pSel))
+            *pSel += (uint16_t)pRegCtx->bCpl << BS3_SEL_RING_SHIFT;
+        *pSel |= pRegCtx->bCpl;
+    }
+}
+