1 | /* $Id: VMMAll.cpp 18927 2009-04-16 11:41:38Z vboxsync $ */
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2 | /** @file
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3 | * VMM All Contexts.
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4 | */
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5 |
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6 | /*
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7 | * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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8 | *
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9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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10 | * available from http://www.virtualbox.org. This file is free software;
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11 | * you can redistribute it and/or modify it under the terms of the GNU
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12 | * General Public License (GPL) as published by the Free Software
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13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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16 | *
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17 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
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18 | * Clara, CA 95054 USA or visit http://www.sun.com if you need
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19 | * additional information or have any questions.
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20 | */
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21 |
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22 |
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23 | /*******************************************************************************
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24 | * Header Files *
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25 | *******************************************************************************/
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26 | #define LOG_GROUP LOG_GROUP_VMM
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27 | #include <VBox/vmm.h>
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28 | #include "VMMInternal.h"
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29 | #include <VBox/vm.h>
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30 | #include <VBox/param.h>
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31 | #include <VBox/hwaccm.h>
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32 |
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33 |
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34 | /**
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35 | * Gets the bottom of the hypervisor stack - RC Ptr.
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36 | *
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37 | * (The returned address is not actually writable, only after it's decremented
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38 | * by a push/ret/whatever does it become writable.)
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39 | *
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40 | * @returns bottom of the stack.
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41 | * @param pVM The VM handle.
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42 | */
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43 | VMMDECL(RTRCPTR) VMMGetStackRC(PVM pVM)
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44 | {
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45 | return (RTRCPTR)pVM->vmm.s.pbEMTStackBottomRC;
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46 | }
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47 |
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48 |
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49 | /**
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50 | * Gets the current virtual CPU ID.
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51 | *
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52 | * @returns The CPU ID.
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53 | * @param pVM Pointer to the shared VM handle.
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54 | * @thread EMT
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55 | */
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56 | VMMDECL(VMCPUID) VMMGetCpuId(PVM pVM)
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57 | {
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58 | #ifdef IN_RING3
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59 | /* Only emulation thread(s) allowed to ask for CPU id */
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60 | if (!VM_IS_EMT(pVM))
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61 | return 0;
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62 | #endif
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63 |
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64 | /* Only emulation thread(s) allowed to ask for CPU id */
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65 | VM_ASSERT_EMT(pVM);
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66 |
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67 | #if defined(IN_RC)
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68 | /* There is only one CPU if we're in GC. */
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69 | return 0;
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70 |
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71 | #elif defined(IN_RING3)
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72 | return VMR3GetVMCPUId(pVM);
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73 |
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74 | #else /* IN_RING0 */
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75 | return HWACCMGetVMCPUId(pVM);
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76 | #endif /* IN_RING0 */
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77 | }
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78 |
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79 | /**
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80 | * Returns the VMCPU of the current EMT thread.
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81 | *
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82 | * @returns The VMCPU pointer.
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83 | * @param pVM The VM to operate on.
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84 | */
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85 | VMMDECL(PVMCPU) VMMGetCpu(PVM pVM)
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86 | {
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87 | #ifdef IN_RING3
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88 | /* Only emulation thread(s) allowed to ask for CPU id */
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89 | if (!VM_IS_EMT(pVM))
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90 | return &pVM->aCpus[0];
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91 | #endif
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92 | /* Only emulation thread(s) allowed to ask for CPU id */
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93 | VM_ASSERT_EMT(pVM);
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94 |
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95 | #if defined(IN_RC)
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96 | /* There is only one CPU if we're in GC. */
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97 | return &pVM->aCpus[0];
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98 |
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99 | #elif defined(IN_RING3)
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100 | return &pVM->aCpus[VMR3GetVMCPUId(pVM)];
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101 |
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102 | #else /* IN_RING0 */
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103 | return &pVM->aCpus[HWACCMGetVMCPUId(pVM)];
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104 | #endif /* IN_RING0 */
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105 | }
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106 |
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107 | /**
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108 | * Returns the VMCPU of the first EMT thread.
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109 | *
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110 | * @returns The VMCPU pointer.
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111 | * @param pVM The VM to operate on.
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112 | */
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113 | VMMDECL(PVMCPU) VMMGetCpu0(PVM pVM)
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114 | {
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115 | Assert(pVM->cCPUs == 1);
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116 | return &pVM->aCpus[0];
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117 | }
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118 |
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119 | /**
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120 | * Returns the VMCPU of the specified virtual CPU.
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121 | *
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122 | * @returns The VMCPU pointer.
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123 | * @param pVM The VM to operate on.
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124 | */
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125 | VMMDECL(PVMCPU) VMMGetCpuEx(PVM pVM, RTCPUID idCpu)
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126 | {
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127 | AssertReturn(idCpu < pVM->cCPUs, NULL);
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128 | return &pVM->aCpus[idCpu];
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129 | }
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130 |
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131 | /**
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132 | * Gets the VBOX_SVN_REV.
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133 | *
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134 | * This is just to avoid having to compile a bunch of big files
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135 | * and requires less Makefile mess.
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136 | *
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137 | * @returns VBOX_SVN_REV.
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138 | */
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139 | VMMDECL(uint32_t) VMMGetSvnRev(void)
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140 | {
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141 | return VBOX_SVN_REV;
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142 | }
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143 |
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144 | /**
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145 | * Queries the current switcher
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146 | *
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147 | * @returns active switcher
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148 | * @param pVM VM handle.
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149 | */
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150 | VMMDECL(VMMSWITCHER) VMMGetSwitcher(PVM pVM)
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151 | {
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152 | return pVM->vmm.s.enmSwitcher;
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153 | }
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