Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 191 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..843c068a
--- /dev/null
+++ b/src/VBox/Runtime/r0drv/darwin/alloc-r0drv-darwin.cpp
@@ -0,0 +1,191 @@
+/* $Id: alloc-r0drv-darwin.cpp $ */
+/** @file
+ * IPRT - Memory Allocation, Ring-0 Driver, Darwin.
+ */
+
+/*
+ * Copyright (C) 2006-2019 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                                                                                                                 *
+*********************************************************************************************************************************/
+#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"
+
+
+/*********************************************************************************************************************************
+*   Structures and Typedefs                                                                                                      *
+*********************************************************************************************************************************/
+/**
+ * Extended header used for headers marked with RTMEMHDR_FLAG_EXEC.
+ *
+ * This is used with allocating executable memory, for things like generated
+ * code and loaded modules.
+ */
+typedef struct RTMEMDARWINHDREX
+{
+    /** The associated memory object. */
+    RTR0MEMOBJ          hMemObj;
+    /** Alignment padding. */
+    uint8_t             abPadding[ARCH_BITS == 32 ? 12 : 8];
+    /** The header we present to the generic API. */
+    RTMEMHDR            Hdr;
+} RTMEMDARWINHDREX;
+AssertCompileSize(RTMEMDARWINHDREX, 32);
+/** Pointer to an extended memory header. */
+typedef RTMEMDARWINHDREX *PRTMEMDARWINHDREX;
+
+
+/**
+ * OS specific allocation function.
+ */
+DECLHIDDEN(int) rtR0MemAllocEx(size_t cb, uint32_t fFlags, PRTMEMHDR *ppHdr)
+{
+    IPRT_DARWIN_SAVE_EFL_AC();
+
+    if (RT_UNLIKELY(fFlags & RTMEMHDR_FLAG_ANY_CTX))
+        return VERR_NOT_SUPPORTED;
+
+    PRTMEMHDR pHdr;
+    if (fFlags & RTMEMHDR_FLAG_EXEC)
+    {
+        RTR0MEMOBJ hMemObj;
+        int rc = RTR0MemObjAllocPage(&hMemObj, cb + sizeof(RTMEMDARWINHDREX), true /*fExecutable*/);
+        if (RT_FAILURE(rc))
+        {
+            IPRT_DARWIN_RESTORE_EFL_AC();
+            return rc;
+        }
+        PRTMEMDARWINHDREX pExHdr = (PRTMEMDARWINHDREX)RTR0MemObjAddress(hMemObj);
+        pExHdr->hMemObj = hMemObj;
+        pHdr = &pExHdr->Hdr;
+#if 1 /*fExecutable isn't currently honored above. */
+        rc = RTR0MemObjProtect(hMemObj, 0, RTR0MemObjSize(hMemObj), RTMEM_PROT_READ | RTMEM_PROT_WRITE | RTMEM_PROT_EXEC);
+        AssertRC(rc);
+#endif
+    }
+    else
+    {
+        pHdr = (PRTMEMHDR)IOMalloc(cb + sizeof(*pHdr));
+        if (RT_UNLIKELY(!pHdr))
+        {
+            printf("rtR0MemAllocEx(%#zx, %#x) failed\n", cb + sizeof(*pHdr), fFlags);
+            IPRT_DARWIN_RESTORE_EFL_AC();
+            return VERR_NO_MEMORY;
+        }
+    }
+
+    pHdr->u32Magic  = RTMEMHDR_MAGIC;
+    pHdr->fFlags    = fFlags;
+    pHdr->cb        = cb;
+    pHdr->cbReq     = cb;
+    *ppHdr = pHdr;
+
+    IPRT_DARWIN_RESTORE_EFL_AC();
+    return VINF_SUCCESS;
+}
+
+
+/**
+ * OS specific free function.
+ */
+DECLHIDDEN(void) rtR0MemFree(PRTMEMHDR pHdr)
+{
+    IPRT_DARWIN_SAVE_EFL_AC();
+
+    pHdr->u32Magic += 1;
+    if (pHdr->fFlags & RTMEMHDR_FLAG_EXEC)
+    {
+        PRTMEMDARWINHDREX pExHdr = RT_FROM_MEMBER(pHdr, RTMEMDARWINHDREX, Hdr);
+        int rc = RTR0MemObjFree(pExHdr->hMemObj, false /*fFreeMappings*/);
+        AssertRC(rc);
+    }
+    else
+        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();
+    }
+}
+