1 files changed, 126 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/os2/time-r0drv-os2.cpp b/src/VBox/Runtime/r0drv/os2/time-r0drv-os2.cpp
new file mode 100644
index 00000000..283a87bd
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/os2/time-r0drv-os2.cpp
@@ -0,0 +1,126 @@
+/* $Id: time-r0drv-os2.cpp $ */
+/** @file
+ * IPRT - Time, Ring-0 Driver, OS/2.
+ */
+
+/*
+ * Contributed by knut st. osmundsen.
+ *
+ * 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
+ * --------------------------------------------------------------------
+ *
+ * This code is based on:
+ *
+ * Copyright (c) 2007 knut st. osmundsen <bird-src-spam@anduin.net>
+ *
+ * Permission is hereby granted, free of charge, to any person
+ * obtaining a copy of this software and associated documentation
+ * files (the "Software"), to deal in the Software without
+ * restriction, including without limitation the rights to use,
+ * copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following
+ * conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+ * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+ * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#include "the-os2-kernel.h"
+
+#include <iprt/time.h>
+
+
+RTDECL(uint64_t) RTTimeNanoTS(void)
+{
+    /** @remark OS/2 Ring-0: will wrap after 48 days. */
+    return g_pGIS->msecs * UINT64_C(1000000);
+}
+
+
+RTDECL(uint64_t) RTTimeMilliTS(void)
+{
+    /** @remark OS/2 Ring-0: will wrap after 48 days. */
+    return g_pGIS->msecs;
+}
+
+
+RTDECL(uint64_t) RTTimeSystemNanoTS(void)
+{
+    /** @remark OS/2 Ring-0: will wrap after 48 days. */
+    return g_pGIS->msecs * UINT64_C(1000000);
+}
+
+
+RTDECL(uint64_t) RTTimeSystemMilliTS(void)
+{
+    /** @remark OS/2 Ring-0: will wrap after 48 days. */
+    return g_pGIS->msecs;
+}
+
+
+RTDECL(PRTTIMESPEC) RTTimeNow(PRTTIMESPEC pTime)
+{
+    /*
+     * Get the seconds since the unix epoch (local time) and current hundredths.
+     */
+    GINFOSEG volatile *pGIS = (GINFOSEG volatile *)g_pGIS;
+    UCHAR uchHundredths;
+    ULONG ulSeconds;
+    do
+    {
+        uchHundredths = pGIS->hundredths;
+        ulSeconds = pGIS->time;
+    } while (   uchHundredths  == pGIS->hundredths
+             && ulSeconds      == pGIS->time);
+
+    /*
+     * Combine the two and convert to UCT (later).
+     */
+    uint64_t u64 = ulSeconds * UINT64_C(1000000000) + (uint32_t)uchHundredths * 10000000;
+    /** @todo convert from local to UCT. */
+
+    /** @remark OS/2 Ring-0: Currently returns local time instead of UCT. */
+    return RTTimeSpecSetNano(pTime, u64);
+}
+