1 files changed, 71 insertions, 0 deletions
diff --git a/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxGetRspSsAsCurPtr.c b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxGetRspSsAsCurPtr.c
new file mode 100644
index 00000000..5f36e2b1
--- /dev/null
+++ b/src/VBox/ValidationKit/bootsectors/bs3kit/bs3-cmn-RegCtxGetRspSsAsCurPtr.c
@@ -0,0 +1,71 @@
+/* $Id: bs3-cmn-RegCtxGetRspSsAsCurPtr.c $ */
+/** @file
+ * BS3Kit - Bs3RegCtxGetRspSsAsCurPtr
+ */
+
+/*
+ * 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 Bs3RegCtxGetRspSsAsCurPtr
+BS3_CMN_DEF(void BS3_FAR *, Bs3RegCtxGetRspSsAsCurPtr,(PBS3REGCTX pRegCtx))
+{
+    uint64_t uFlat;
+    if (BS3_MODE_IS_RM_OR_V86(pRegCtx->bMode))
+    {
+#if ARCH_BITS == 16
+        if (BS3_MODE_IS_RM_OR_V86(g_bBs3CurrentMode))
+            return BS3_FP_MAKE(pRegCtx->ss, pRegCtx->rsp.u16);
+#endif
+        uFlat = ((uint32_t)pRegCtx->ss << 4) + pRegCtx->rsp.u16;
+    }
+    else if (!BS3_MODE_IS_64BIT_CODE(pRegCtx->bMode))
+        uFlat = Bs3SelFar32ToFlat32(pRegCtx->rsp.u32, pRegCtx->ss);
+    else
+        uFlat = pRegCtx->rsp.u64;
+
+#if ARCH_BITS == 16
+    if (uFlat >= (BS3_MODE_IS_RM_OR_V86(g_bBs3CurrentMode) ? _1M : BS3_SEL_TILED_AREA_SIZE))
+        return NULL;
+    return BS3_FP_MAKE(Bs3Sel16HighFlatPtrToSelector((uint32_t)uFlat >> 16), (uint16_t)uFlat);
+#else
+    /* Typically no need to check limit in 32-bit mode, because 64-bit mode
+       just repeats the first 4GB for the rest of the address space. */
+    return (void *)(uintptr_t)uFlat;
+#endif
+}
+