1 files changed, 123 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/nt/memuserkernel-r0drv-nt.cpp b/src/VBox/Runtime/r0drv/nt/memuserkernel-r0drv-nt.cpp
new file mode 100644
index 00000000..2d1c2c62
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/nt/memuserkernel-r0drv-nt.cpp
@@ -0,0 +1,123 @@
+/* $Id: memuserkernel-r0drv-nt.cpp $ */
+/** @file
+ * IPRT - User & Kernel Memory, Ring-0 Driver, NT.
+ */
+
+/*
+ * Copyright (C) 2009-2019 Oracle Corporation
+ *
+ * This file is part of VirtualBox Open Source Edition (OSE), as
+ * available from http://www.virtualbox.org. This file is free software;
+ * you can redistribute it and/or modify it under the terms of the GNU
+ * General Public License (GPL) as published by the Free Software
+ * Foundation, in version 2 as it comes in the "COPYING" file of the
+ * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
+ * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
+ *
+ * The contents of this file may alternatively be used under the terms
+ * of the Common Development and Distribution License Version 1.0
+ * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
+ * VirtualBox OSE 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.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "the-nt-kernel.h"
+
+#include <iprt/mem.h>
+#include <iprt/errcore.h>
+
+#include "internal-r0drv-nt.h"
+
+
+RTR0DECL(int) RTR0MemUserCopyFrom(void *pvDst, RTR3PTR R3PtrSrc, size_t cb)
+{
+    __try
+    {
+        ProbeForRead((PVOID)R3PtrSrc, cb, 1);
+        memcpy(pvDst, (void const *)R3PtrSrc, cb);
+    }
+    __except(EXCEPTION_EXECUTE_HANDLER)
+    {
+        return VERR_ACCESS_DENIED;
+    }
+    return VINF_SUCCESS;
+}
+
+
+RTR0DECL(int) RTR0MemUserCopyTo(RTR3PTR R3PtrDst, void const *pvSrc, size_t cb)
+{
+    __try
+    {
+        ProbeForWrite((PVOID)R3PtrDst, cb, 1);
+        memcpy((void *)R3PtrDst, pvSrc, cb);
+    }
+    __except(EXCEPTION_EXECUTE_HANDLER)
+    {
+        return VERR_ACCESS_DENIED;
+    }
+    return VINF_SUCCESS;
+}
+
+
+RTR0DECL(bool) RTR0MemUserIsValidAddr(RTR3PTR R3Ptr)
+{
+#ifdef IPRT_TARGET_NT4
+    uintptr_t const uLast = g_puRtMmHighestUserAddress ? *g_puRtMmHighestUserAddress : ~(uintptr_t)0 / 2;
+#else
+    uintptr_t const uLast = (uintptr_t)MM_HIGHEST_USER_ADDRESS;
+#endif
+    return R3Ptr <= uLast;
+}
+
+
+RTR0DECL(bool) RTR0MemKernelIsValidAddr(void *pv)
+{
+#ifdef IPRT_TARGET_NT4
+    uintptr_t const uFirst = g_puRtMmSystemRangeStart ? *g_puRtMmSystemRangeStart : ~(uintptr_t)0 / 2 + 1;
+#else
+    uintptr_t const uFirst = (uintptr_t)MM_SYSTEM_RANGE_START;
+#endif
+    return (uintptr_t)pv >= uFirst;
+}
+
+
+RTR0DECL(bool) RTR0MemAreKrnlAndUsrDifferent(void)
+{
+    return true;
+}
+
+
+RTR0DECL(int) RTR0MemKernelCopyFrom(void *pvDst, void const *pvSrc, size_t cb)
+{
+    __try
+    {
+        memcpy(pvDst, pvSrc, cb);
+    }
+    __except(EXCEPTION_EXECUTE_HANDLER)
+    {
+        return VERR_ACCESS_DENIED;
+    }
+    return VINF_SUCCESS;
+}
+
+
+RTR0DECL(int) RTR0MemKernelCopyTo(void *pvDst, void const *pvSrc, size_t cb)
+{
+    __try
+    {
+        memcpy(pvDst, pvSrc, cb);
+    }
+    __except(EXCEPTION_EXECUTE_HANDLER)
+    {
+        return VERR_ACCESS_DENIED;
+    }
+    return VINF_SUCCESS;
+}
+