1 files changed, 152 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r0drv/darwin/alloc-r0drv-darwin.cpp b/src/VBox/Runtime/r0drv/darwin/alloc-r0drv-darwin.cpp
new file mode 100644
index 00000000..3d334321
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/darwin/alloc-r0drv-darwin.cpp
@@ -0,0 +1,152 @@
+/* $Id: alloc-r0drv-darwin.cpp $ */
+/** @file
+ * IPRT - Memory Allocation, Ring-0 Driver, Darwin.
+ */
+
+/*
+ * 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
+ */
+
+
+/*********************************************************************************************************************************
+*   Header Files                                                                                                                 *
+*********************************************************************************************************************************/
+#pragma GCC diagnostic ignored "-Wdeprecated-declarations" /* (IOMallocContiguous et al are deprecated) */
+#include "the-darwin-kernel.h"
+#include "internal/iprt.h"
+#include <iprt/mem.h>
+#include <iprt/memobj.h>
+
+#include <iprt/assert.h>
+#include <iprt/errcore.h>
+#include <iprt/thread.h>
+#include "r0drv/alloc-r0drv.h"
+
+
+
+/**
+ * OS specific allocation function.
+ */
+DECLHIDDEN(int) rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr)
+{
+    IPRT_DARWIN_SAVE_EFL_AC();
+    if (RT_LIKELY(!(fFlags & RTMEMHDR_FLAG_ANY_CTX)))
+    {
+        PRTMEMHDR pHdr = (PRTMEMHDR)IOMalloc(cb + sizeof(*pHdr));
+        if (RT_LIKELY(pHdr))
+        {
+            pHdr->u32Magic  = RTMEMHDR_MAGIC;
+            pHdr->fFlags    = fFlags;
+            pHdr->cb        = cb;
+            pHdr->cbReq     = cb;
+            *ppHdr = pHdr;
+
+            IPRT_DARWIN_RESTORE_EFL_AC();
+            return VINF_SUCCESS;
+        }
+
+        printf("rtR0MemAllocEx(%#zx, %#x) failed\n", cb + sizeof(*pHdr), fFlags);
+        IPRT_DARWIN_RESTORE_EFL_AC();
+        return VERR_NO_MEMORY;
+    }
+    IPRT_DARWIN_RESTORE_EFL_AC();
+    return VERR_NOT_SUPPORTED;
+}
+
+
+/**
+ * OS specific free function.
+ */
+DECLHIDDEN(void) rtR0MemFree(PRTMEMHDR pHdr)
+{
+    IPRT_DARWIN_SAVE_EFL_AC();
+
+    pHdr->u32Magic += 1;
+    IOFree(pHdr, pHdr->cb + sizeof(*pHdr));
+
+    IPRT_DARWIN_RESTORE_EFL_AC();
+}
+
+
+RTR0DECL(void *) RTMemContAlloc(PRTCCPHYS pPhys, size_t cb)
+{
+    /*
+     * validate input.
+     */
+    AssertPtr(pPhys);
+    Assert(cb > 0);
+    RT_ASSERT_PREEMPTIBLE();
+    IPRT_DARWIN_SAVE_EFL_AC();
+
+    /*
+     * Allocate the memory and ensure that the API is still providing
+     * memory that's always below 4GB.
+     */
+    cb = RT_ALIGN_Z(cb, PAGE_SIZE);
+    IOPhysicalAddress PhysAddr;
+    void *pv = IOMallocContiguous(cb, PAGE_SIZE, &PhysAddr);
+    if (pv)
+    {
+        if (PhysAddr + (cb - 1) <= (IOPhysicalAddress)0xffffffff)
+        {
+            if (!((uintptr_t)pv & PAGE_OFFSET_MASK))
+            {
+                *pPhys = PhysAddr;
+                IPRT_DARWIN_RESTORE_EFL_AC();
+                return pv;
+            }
+            AssertMsgFailed(("IOMallocContiguous didn't return a page aligned address - %p!\n", pv));
+        }
+        else
+            AssertMsgFailed(("IOMallocContiguous returned high address! PhysAddr=%RX64 cb=%#zx\n", (uint64_t)PhysAddr, cb));
+        IOFreeContiguous(pv, cb);
+    }
+
+    IPRT_DARWIN_RESTORE_EFL_AC();
+    return NULL;
+}
+
+
+RTR0DECL(void) RTMemContFree(void *pv, size_t cb)
+{
+    RT_ASSERT_PREEMPTIBLE();
+    if (pv)
+    {
+        Assert(cb > 0);
+        AssertMsg(!((uintptr_t)pv & PAGE_OFFSET_MASK), ("pv=%p\n", pv));
+        IPRT_DARWIN_SAVE_EFL_AC();
+
+        cb = RT_ALIGN_Z(cb, PAGE_SIZE);
+        IOFreeContiguous(pv, cb);
+
+        IPRT_DARWIN_RESTORE_EFL_AC();
+    }
+}
+