1 files changed, 141 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/os2/alloc-r0drv-os2.cpp b/src/VBox/Runtime/r0drv/os2/alloc-r0drv-os2.cpp
new file mode 100644
index 00000000..c966649e
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/os2/alloc-r0drv-os2.cpp
@@ -0,0 +1,141 @@
+/* $Id: alloc-r0drv-os2.cpp $ */
+/** @file
+ * IPRT - Memory Allocation, 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 "internal/iprt.h"
+#include <iprt/mem.h>
+
+#include <iprt/assert.h>
+#include <iprt/errcore.h>
+#include <iprt/param.h>
+#include "r0drv/alloc-r0drv.h" /** @todo drop the r0drv/alloc-r0drv.cpp stuff on OS/2? */
+
+
+DECLHIDDEN(int) rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr)
+{
+    if (fFlags & RTMEMHDR_FLAG_ANY_CTX)
+        return VERR_NOT_SUPPORTED;
+
+    void *pv = NULL;
+    APIRET rc = KernVMAlloc(cb + sizeof(RTMEMHDR), VMDHA_FIXED, &pv, (void **)-1, NULL);
+    if (RT_UNLIKELY(rc != NO_ERROR))
+        return RTErrConvertFromOS2(rc);
+
+    PRTMEMHDR   pHdr = (PRTMEMHDR)pv;
+    pHdr->u32Magic   = RTMEMHDR_MAGIC;
+    pHdr->fFlags     = fFlags;
+    pHdr->cb         = cb;
+    pHdr->cbReq      = cb;
+    *ppHdr = pHdr;
+    return VINF_SUCCESS;
+}
+
+
+DECLHIDDEN(void) rtR0MemFree(PRTMEMHDR pHdr)
+{
+    pHdr->u32Magic += 1;
+    APIRET rc = KernVMFree(pHdr);
+    Assert(!rc); NOREF(rc);
+}
+
+
+RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb)
+{
+    /*
+     * Validate input.
+     */
+    AssertPtr(pPhys);
+    Assert(cb > 0);
+
+    /*
+     * All physical memory in OS/2 is below 4GB, so this should be kind of easy.
+     */
+    cb = RT_ALIGN_Z(cb, PAGE_SIZE); /* -> page aligned result. */
+    PVOID pv = NULL;
+    PVOID PhysAddr = (PVOID)~0UL;
+    APIRET rc = KernVMAlloc(cb, VMDHA_FIXED | VMDHA_CONTIG, &pv, &PhysAddr, NULL);
+    if (!rc)
+    {
+        Assert(PhysAddr != (PVOID)~0UL);
+        Assert(!((uintptr_t)pv & PAGE_OFFSET_MASK));
+        *pPhys = (uintptr_t)PhysAddr;
+        return pv;
+    }
+    return NULL;
+}
+
+
+RTR0DECL(void) RTMemContFree(void *pv, size_t cb)
+{
+    if (pv)
+    {
+        AssertMsg(!((uintptr_t)pv & PAGE_OFFSET_MASK), ("pv=%p\n", pv));
+        KernVMFree(pv);
+    }
+}
+