Imported from /home/lorry/working-area/delta_VirtualBox/VirtualBox-4.2.4.tar.bz2.VirtualBox-4.2.4

1 files changed, 152 insertions, 0 deletions

diff --git a/include/VBox/vmm/uvm.h b/include/VBox/vmm/uvm.h
new file mode 100644
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+/** @file
+ * GVM - The Global VM Data.
+ */
+
+/*
+ * Copyright (C) 2007-2010 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.
+ */
+
+
+#ifndef ___VBox_vmm_uvm_h
+#define ___VBox_vmm_uvm_h
+
+#include <VBox/types.h>
+#include <iprt/assert.h>
+
+
+/**
+ * Per virtual CPU ring-3 (user mode) data.
+ */
+typedef struct UVMCPU
+{
+    /** Pointer to the UVM structure.  */
+    PUVM                            pUVM;
+    /** Pointer to the VM structure.  */
+    PVM                             pVM;
+    /** Pointer to the VMCPU structure.  */
+    PVMCPU                          pVCpu;
+    /** The virtual CPU ID.  */
+    RTCPUID                         idCpu;
+    /** Alignment padding. */
+    uint8_t                         abAlignment0[HC_ARCH_BITS == 32 ? 16 : 4];
+
+    /** The VM internal data. */
+    union
+    {
+#ifdef ___VMInternal_h
+        struct VMINTUSERPERVMCPU    s;
+#endif
+        uint8_t                     padding[512];
+    } vm;
+} UVMCPU;
+AssertCompileMemberAlignment(UVMCPU, vm, 32);
+
+
+/**
+ * The ring-3 (user mode) VM structure.
+ *
+ * This structure is similar to VM and GVM except that it resides in swappable
+ * user memory. The main purpose is to assist bootstrapping, where it allows us
+ * to start EMT much earlier and gives PDMLdr somewhere to put it's VMMR0 data.
+ * It is also a nice place to put big things that are user mode only.
+ */
+typedef struct UVM
+{
+    /** Magic / eye-catcher (UVM_MAGIC). */
+    uint32_t            u32Magic;
+    /** The number of virtual CPUs. */
+    uint32_t            cCpus;
+    /** The ring-3 mapping of the shared VM structure. */
+    PVM                 pVM;
+    /** Pointer to the next VM.
+     * We keep a per process list of VM for the event that a process could
+     * contain more than one VM.
+     * @todo move this into vm.s!
+     */
+    struct UVM         *pNext;
+
+    /** Pointer to the optional method table provided by the VMM user. */
+    PCVMM2USERMETHODS   pVmm2UserMethods;
+
+#if HC_ARCH_BITS == 32
+    /** Align the next member on a 32 byte boundary. */
+    uint8_t             abAlignment0[HC_ARCH_BITS == 32 ? 12 : 0];
+#endif
+
+    /** The VM internal data. */
+    union
+    {
+#ifdef ___VMInternal_h
+        struct VMINTUSERPERVM   s;
+#endif
+        uint8_t                 padding[512];
+    } vm;
+
+    /** The MM data. */
+    union
+    {
+#ifdef ___MMInternal_h
+        struct MMUSERPERVM      s;
+#endif
+        uint8_t                 padding[32];
+    } mm;
+
+    /** The PDM data. */
+    union
+    {
+#ifdef ___PDMInternal_h
+        struct PDMUSERPERVM     s;
+#endif
+        uint8_t                 padding[128];
+    } pdm;
+
+    /** The STAM data. */
+    union
+    {
+#ifdef ___STAMInternal_h
+        struct STAMUSERPERVM    s;
+#endif
+        uint8_t                 padding[6624];
+    } stam;
+
+    /** Per virtual CPU data. */
+    UVMCPU                      aCpus[1];
+} UVM;
+AssertCompileMemberAlignment(UVM, vm, 32);
+AssertCompileMemberAlignment(UVM, mm, 32);
+AssertCompileMemberAlignment(UVM, pdm, 32);
+AssertCompileMemberAlignment(UVM, stam, 32);
+AssertCompileMemberAlignment(UVM, aCpus, 32);
+
+/** The UVM::u32Magic value (Brad Mehldau). */
+#define UVM_MAGIC       0x19700823
+
+/** @def UVM_ASSERT_VALID_EXT_RETURN
+ * Asserts a user mode VM handle is valid for external access.
+ */
+#define UVM_ASSERT_VALID_EXT_RETURN(a_pUVM, a_rc) \
+        AssertMsgReturn(    RT_VALID_ALIGNED_PTR(a_pUVM, PAGE_SIZE) \
+                        &&  (a_pUVM)->u32Magic == UVM_MAGIC, \
+                        ("a_pUVM=%p u32Magic=%#x\n", (a_pUVM), \
+                         RT_VALID_ALIGNED_PTR(a_pUVM, PAGE_SIZE) ? (a_pUVM)->u32Magic : 0), \
+                        (a_rc))
+
+#endif
+