1 files changed, 95 insertions, 0 deletions
diff --git a/include/VBox/vmm/gcm.h b/include/VBox/vmm/gcm.h
new file mode 100644
index 00000000..d3a513d7
--- /dev/null
+++ b/include/VBox/vmm/gcm.h
@@ -0,0 +1,95 @@
+/** @file
+ * GCM - Guest Compatibility Manager.
+ */
+
+/*
+ * Copyright (C) 2022-2023 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
+ */
+
+#ifndef VBOX_INCLUDED_vmm_gcm_h
+#define VBOX_INCLUDED_vmm_gcm_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <VBox/cdefs.h>
+#include <VBox/types.h>
+#include <VBox/param.h>
+
+#include <VBox/vmm/cpum.h>
+#include <VBox/vmm/pdmifs.h>
+
+RT_C_DECLS_BEGIN
+
+/** @defgroup grp_gcm   The Guest Compatibility Manager API
+ * @ingroup grp_vmm
+ * @{
+ */
+
+/**
+ * GCM Fixer Identifiers.
+ * @remarks Part of saved state!
+ */
+typedef enum GCMFIXERID
+{
+    /** None. */
+    GCMFIXER_NONE       = 0,
+    /** DOS division by zero, the worst. Includes Windows 3.x. */
+    GCMFIXER_DBZ_DOS    = RT_BIT(0),
+    /** OS/2 (any version) division by zero. */
+    GCMFIXER_DBZ_OS2    = RT_BIT(1),
+    /** Windows 9x division by zero. */
+    GCMFIXER_DBZ_WIN9X  = RT_BIT(2),
+    /** 32-bit hack. */
+    GCMFIXER_32BIT_HACK = 0x7fffffff
+} GCMFIXERID;
+AssertCompileSize(GCMFIXERID, sizeof(uint32_t));
+
+
+#ifdef IN_RING3
+/** @defgroup grp_gcm_r3  The GCM Host Context Ring-3 API
+ * @{
+ */
+VMMR3_INT_DECL(int)         GCMR3Init(PVM pVM);
+VMMR3_INT_DECL(void)        GCMR3Relocate(PVM pVM, RTGCINTPTR offDelta);
+VMMR3_INT_DECL(int)         GCMR3Term(PVM pVM);
+VMMR3_INT_DECL(void)        GCMR3Reset(PVM pVM);
+/** @} */
+#endif /* IN_RING3 */
+
+VMMDECL(bool)               GCMIsEnabled(PVM pVM);
+VMM_INT_DECL(bool)          GCMShouldTrapXcptDE(PVMCPUCC pVCpu);
+VMM_INT_DECL(VBOXSTRICTRC)  GCMXcptDE(PVMCPUCC pVCpu, PCPUMCTX pCtx, PDISCPUSTATE pDis, uint8_t *pcbInstr);
+/** @} */
+
+RT_C_DECLS_END
+
+#endif /* !VBOX_INCLUDED_vmm_gcm_h */
+