1 files changed, 117 insertions, 0 deletions
diff --git a/include/VBox/vmm/dbgfsel.h b/include/VBox/vmm/dbgfsel.h
new file mode 100644
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+++ b/include/VBox/vmm/dbgfsel.h
@@ -0,0 +1,117 @@
+/** @file
+ * DBGF - Debugger Facility, selector interface partly shared with SELM.
+ */
+
+/*
+ * Copyright (C) 2006-2022 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
+ */
+
+#ifndef VBOX_INCLUDED_vmm_dbgfsel_h
+#define VBOX_INCLUDED_vmm_dbgfsel_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <VBox/types.h>
+#include <iprt/x86.h>
+
+
+/** @addtogroup grp_dbgf
+ * @{ */
+
+/**
+ * Selector information structure.
+ */
+typedef struct DBGFSELINFO
+{
+    /** The base address.
+     * For gate descriptors, this is the target address.  */
+    RTGCPTR         GCPtrBase;
+    /** The limit (-1).
+     * For gate descriptors, this is set to zero. */
+    RTGCUINTPTR     cbLimit;
+    /** The raw descriptor. */
+    union
+    {
+        X86DESC     Raw;
+        X86DESC64   Raw64;
+    } u;
+    /** The selector. */
+    RTSEL           Sel;
+    /** The target selector for a gate.
+     * This is 0 if non-gate descriptor. */
+    RTSEL           SelGate;
+    /** Flags. */
+    uint32_t        fFlags;
+} DBGFSELINFO;
+/** Pointer to a SELM selector information struct. */
+typedef DBGFSELINFO *PDBGFSELINFO;
+/** Pointer to a const SELM selector information struct. */
+typedef const DBGFSELINFO *PCDBGFSELINFO;
+
+/** @name DBGFSELINFO::fFlags
+ * @{ */
+/** The CPU is in real mode. */
+#define DBGFSELINFO_FLAGS_REAL_MODE     RT_BIT_32(0)
+/** The CPU is in protected mode. */
+#define DBGFSELINFO_FLAGS_PROT_MODE     RT_BIT_32(1)
+/** The CPU is in long mode. */
+#define DBGFSELINFO_FLAGS_LONG_MODE     RT_BIT_32(2)
+/** The selector is a hyper selector.
+ * @todo remove me!  */
+#define DBGFSELINFO_FLAGS_HYPER         RT_BIT_32(3)
+/** The selector is a gate selector. */
+#define DBGFSELINFO_FLAGS_GATE          RT_BIT_32(4)
+/** The selector is invalid. */
+#define DBGFSELINFO_FLAGS_INVALID       RT_BIT_32(5)
+/** The selector not present. */
+#define DBGFSELINFO_FLAGS_NOT_PRESENT   RT_BIT_32(6)
+/** @}  */
+
+
+/**
+ * Tests whether the selector info describes an expand-down selector or now.
+ *
+ * @returns true / false.
+ * @param   pSelInfo        The selector info.
+ */
+DECLINLINE(bool) DBGFSelInfoIsExpandDown(PCDBGFSELINFO pSelInfo)
+{
+    return (pSelInfo)->u.Raw.Gen.u1DescType
+        && ((pSelInfo)->u.Raw.Gen.u4Type & (X86_SEL_TYPE_DOWN | X86_SEL_TYPE_CODE)) == X86_SEL_TYPE_DOWN;
+}
+
+
+VMMR3DECL(int) DBGFR3SelInfoValidateCS(PCDBGFSELINFO pSelInfo, RTSEL SelCPL);
+
+/** @}  */
+
+#endif /* !VBOX_INCLUDED_vmm_dbgfsel_h */
+