| 1 | /* $Id: IOMAll.cpp 8155 2008-04-18 15:16:47Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IOM - Input / Output Monitor - Any Context.
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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 | * Header Files *
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| 24 | *******************************************************************************/
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| 25 | #define LOG_GROUP LOG_GROUP_IOM
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| 26 | #include <VBox/iom.h>
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| 27 | #include <VBox/mm.h>
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| 28 | #include <VBox/param.h>
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| 29 | #include "IOMInternal.h"
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| 30 | #include <VBox/vm.h>
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| 31 | #include <VBox/selm.h>
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| 32 | #include <VBox/trpm.h>
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| 33 | #include <VBox/pgm.h>
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| 34 | #include <VBox/cpum.h>
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| 35 | #include <VBox/err.h>
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| 36 | #include <VBox/log.h>
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| 37 | #include <iprt/assert.h>
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| 38 |
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| 39 |
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| 40 | /**
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| 41 | * Calculates the size of register parameter.
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| 42 | *
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| 43 | * @returns 1, 2, 4 on success.
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| 44 | * @returns 0 if non-register parameter.
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| 45 | * @param pCpu Pointer to current disassembler context.
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| 46 | * @param pParam Pointer to parameter of instruction to proccess.
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| 47 | */
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| 48 | static unsigned iomGCGetRegSize(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam)
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| 49 | {
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| 50 | if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32 | USE_IMMEDIATE8 | USE_IMMEDIATE16 | USE_IMMEDIATE32 | USE_IMMEDIATE16_SX8 | USE_IMMEDIATE32_SX8))
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| 51 | return 0;
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| 52 |
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| 53 | if (pParam->flags & USE_REG_GEN32)
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| 54 | return 4;
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| 55 |
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| 56 | if (pParam->flags & USE_REG_GEN16)
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| 57 | return 2;
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| 58 |
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| 59 | if (pParam->flags & USE_REG_GEN8)
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| 60 | return 1;
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| 61 |
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| 62 | if (pParam->flags & USE_REG_SEG)
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| 63 | return 2;
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| 64 | return 0;
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| 65 | }
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| 66 |
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| 67 |
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| 68 | /**
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| 69 | * Returns the contents of register or immediate data of instruction's parameter.
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| 70 | *
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| 71 | * @returns true on success.
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| 72 | *
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| 73 | * @param pCpu Pointer to current disassembler context.
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| 74 | * @param pParam Pointer to parameter of instruction to proccess.
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| 75 | * @param pRegFrame Pointer to CPUMCTXCORE guest structure.
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| 76 | * @param pu32Data Where to store retrieved data.
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| 77 | * @param pcbSize Where to store the size of data (1, 2, 4).
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| 78 | */
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| 79 | static bool iomGCGetRegImmData(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, uint32_t *pu32Data, unsigned *pcbSize)
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| 80 | {
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| 81 | if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32))
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| 82 | {
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| 83 | *pcbSize = 0;
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| 84 | *pu32Data = 0;
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| 85 | return false;
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| 86 | }
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| 87 |
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| 88 | if (pParam->flags & USE_REG_GEN32)
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| 89 | {
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| 90 | *pcbSize = 4;
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| 91 | DISFetchReg32(pRegFrame, pParam->base.reg_gen32, pu32Data);
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| 92 | return true;
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| 93 | }
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| 94 |
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| 95 | if (pParam->flags & USE_REG_GEN16)
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| 96 | {
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| 97 | *pcbSize = 2;
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| 98 | DISFetchReg16(pRegFrame, pParam->base.reg_gen16, (uint16_t *)pu32Data);
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| 99 | return true;
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| 100 | }
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| 101 |
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| 102 | if (pParam->flags & USE_REG_GEN8)
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| 103 | {
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| 104 | *pcbSize = 1;
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| 105 | DISFetchReg8(pRegFrame, pParam->base.reg_gen8, (uint8_t *)pu32Data);
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| 106 | return true;
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| 107 | }
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| 108 |
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| 109 | if (pParam->flags & (USE_IMMEDIATE32|USE_IMMEDIATE32_SX8))
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| 110 | {
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| 111 | *pcbSize = 4;
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| 112 | *pu32Data = (uint32_t)pParam->parval;
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| 113 | return true;
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| 114 | }
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| 115 |
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| 116 | if (pParam->flags & (USE_IMMEDIATE16|USE_IMMEDIATE16_SX8))
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| 117 | {
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| 118 | *pcbSize = 2;
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| 119 | *pu32Data = (uint16_t)pParam->parval;
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| 120 | return true;
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| 121 | }
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| 122 |
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| 123 | if (pParam->flags & USE_IMMEDIATE8)
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| 124 | {
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| 125 | *pcbSize = 1;
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| 126 | *pu32Data = (uint8_t)pParam->parval;
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| 127 | return true;
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| 128 | }
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| 129 |
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| 130 | if (pParam->flags & USE_REG_SEG)
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| 131 | {
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| 132 | *pcbSize = 2;
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| 133 | DISFetchRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL *)pu32Data);
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| 134 | return true;
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| 135 | } /* Else - error. */
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| 136 |
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| 137 | *pcbSize = 0;
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| 138 | *pu32Data = 0;
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| 139 | return false;
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| 140 | }
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| 141 |
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| 142 |
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| 143 | /**
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| 144 | * Saves data to 8/16/32 general purpose or segment register defined by
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| 145 | * instruction's parameter.
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| 146 | *
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| 147 | * @returns true on success.
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| 148 | * @param pCpu Pointer to current disassembler context.
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| 149 | * @param pParam Pointer to parameter of instruction to proccess.
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| 150 | * @param pRegFrame Pointer to CPUMCTXCORE guest structure.
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| 151 | * @param u32Data 8/16/32 bit data to store.
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| 152 | */
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| 153 | static bool iomGCSaveDataToReg(PDISCPUSTATE pCpu, PCOP_PARAMETER pParam, PCPUMCTXCORE pRegFrame, unsigned u32Data)
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| 154 | {
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| 155 | if (pParam->flags & (USE_BASE | USE_INDEX | USE_SCALE | USE_DISPLACEMENT8 | USE_DISPLACEMENT16 | USE_DISPLACEMENT32 | USE_IMMEDIATE8 | USE_IMMEDIATE16 | USE_IMMEDIATE32 | USE_IMMEDIATE32_SX8 | USE_IMMEDIATE16_SX8))
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| 156 | {
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| 157 | return false;
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| 158 | }
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| 159 |
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| 160 | if (pParam->flags & USE_REG_GEN32)
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| 161 | {
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| 162 | DISWriteReg32(pRegFrame, pParam->base.reg_gen32, u32Data);
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| 163 | return true;
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| 164 | }
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| 165 |
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| 166 | if (pParam->flags & USE_REG_GEN16)
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| 167 | {
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| 168 | DISWriteReg16(pRegFrame, pParam->base.reg_gen16, (uint16_t)u32Data);
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| 169 | return true;
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| 170 | }
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| 171 |
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| 172 | if (pParam->flags & USE_REG_GEN8)
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| 173 | {
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| 174 | DISWriteReg8(pRegFrame, pParam->base.reg_gen8, (uint8_t)u32Data);
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| 175 | return true;
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| 176 | }
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| 177 |
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| 178 | if (pParam->flags & USE_REG_SEG)
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| 179 | {
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| 180 | DISWriteRegSeg(pRegFrame, pParam->base.reg_seg, (RTSEL)u32Data);
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| 181 | return true;
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| 182 | }
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| 183 |
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| 184 | /* Else - error. */
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| 185 | return false;
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| 186 | }
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| 187 |
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| 188 | /*
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| 189 | * Internal - statistics only.
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| 190 | */
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| 191 | DECLINLINE(void) iomGCMMIOStatLength(PVM pVM, unsigned cb)
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| 192 | {
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| 193 | #ifdef VBOX_WITH_STATISTICS
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| 194 | switch (cb)
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| 195 | {
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| 196 | case 1:
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| 197 | STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO1Byte);
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| 198 | break;
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| 199 | case 2:
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| 200 | STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO2Bytes);
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| 201 | break;
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| 202 | case 4:
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| 203 | STAM_COUNTER_INC(&pVM->iom.s.StatGCMMIO4Bytes);
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| 204 | break;
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| 205 | default:
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| 206 | /* No way. */
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| 207 | AssertMsgFailed(("Invalid data length %d\n", cb));
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| 208 | break;
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| 209 | }
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| 210 | #else
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| 211 | NOREF(pVM); NOREF(cb);
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| 212 | #endif
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| 213 | }
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| 214 |
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| 215 |
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| 216 | //#undef LOG_GROUP
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| 217 | //#define LOG_GROUP LOG_GROUP_IOM_IOPORT
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| 218 |
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| 219 | /**
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| 220 | * Reads an I/O port register.
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| 221 | *
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| 222 | * @returns Strict VBox status code. Informational status codes other than the one documented
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| 223 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
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| 224 | * @retval VINF_SUCCESS Success.
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| 225 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
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| 226 | * status code must be passed on to EM.
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| 227 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
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| 228 | *
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| 229 | * @param pVM VM handle.
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| 230 | * @param Port The port to read.
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| 231 | * @param pu32Value Where to store the value read.
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| 232 | * @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes.
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| 233 | */
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| 234 | IOMDECL(int) IOMIOPortRead(PVM pVM, RTIOPORT Port, uint32_t *pu32Value, size_t cbValue)
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| 235 | {
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| 236 | #ifdef VBOX_WITH_STATISTICS
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| 237 | /*
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| 238 | * Get the statistics record.
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| 239 | */
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| 240 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead);
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| 241 | if (!pStats || pStats->Core.Key != Port)
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| 242 | {
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| 243 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
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| 244 | if (pStats)
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| 245 | CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats;
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| 246 | }
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| 247 | #endif
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| 248 |
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| 249 | /*
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| 250 | * Get handler for current context.
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| 251 | */
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| 252 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead);
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| 253 | if ( !pRange
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| 254 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
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| 255 | {
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| 256 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
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| 257 | if (pRange)
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| 258 | CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange;
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| 259 | }
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| 260 | #ifdef IN_GC
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| 261 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
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| 262 | #endif
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| 263 |
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| 264 | if (pRange)
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| 265 | {
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| 266 | /*
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| 267 | * Found a range.
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| 268 | */
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| 269 | #ifndef IN_RING3
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| 270 | if (!pRange->pfnInCallback)
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| 271 | {
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| 272 | # ifdef VBOX_WITH_STATISTICS
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| 273 | if (pStats)
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| 274 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
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| 275 | # endif
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| 276 | return VINF_IOM_HC_IOPORT_READ;
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| 277 | }
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| 278 | #endif
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| 279 | /* call the device. */
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| 280 | #ifdef VBOX_WITH_STATISTICS
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| 281 | if (pStats)
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| 282 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a);
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| 283 | #endif
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| 284 | int rc = pRange->pfnInCallback(pRange->pDevIns, pRange->pvUser, Port, pu32Value, cbValue);
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| 285 | #ifdef VBOX_WITH_STATISTICS
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| 286 | if (pStats)
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| 287 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a);
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| 288 | if (rc == VINF_SUCCESS && pStats)
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| 289 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
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| 290 | # ifndef IN_RING3
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| 291 | else if (rc == VINF_IOM_HC_IOPORT_READ && pStats)
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| 292 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
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| 293 | # endif
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| 294 | #endif
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| 295 | if (rc == VERR_IOM_IOPORT_UNUSED)
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| 296 | {
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| 297 | /* make return value */
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| 298 | rc = VINF_SUCCESS;
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| 299 | switch (cbValue)
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| 300 | {
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| 301 | case 1: *(uint8_t *)pu32Value = 0xff; break;
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| 302 | case 2: *(uint16_t *)pu32Value = 0xffff; break;
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| 303 | case 4: *(uint32_t *)pu32Value = 0xffffffff; break;
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| 304 | default:
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| 305 | AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port));
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| 306 | return VERR_IOM_INVALID_IOPORT_SIZE;
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| 307 | }
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| 308 | }
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| 309 | Log3(("IOMIOPortRead: Port=%RTiop *pu32=%08RX32 cb=%d rc=%Vrc\n", Port, *pu32Value, cbValue, rc));
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| 310 | return rc;
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| 311 | }
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| 312 |
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| 313 | #ifndef IN_RING3
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| 314 | /*
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| 315 | * Handler in ring-3?
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| 316 | */
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| 317 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
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| 318 | if (pRangeR3)
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| 319 | {
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| 320 | # ifdef VBOX_WITH_STATISTICS
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| 321 | if (pStats)
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| 322 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
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| 323 | # endif
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| 324 | return VINF_IOM_HC_IOPORT_READ;
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| 325 | }
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| 326 | #endif
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| 327 |
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| 328 | /*
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| 329 | * Ok, no handler for this port.
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| 330 | */
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| 331 | #ifdef VBOX_WITH_STATISTICS
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| 332 | if (pStats)
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| 333 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
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| 334 | else
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| 335 | {
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| 336 | # ifndef IN_RING3
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| 337 | /* Ring-3 will have to create the statistics record. */
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| 338 | return VINF_IOM_HC_IOPORT_READ;
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| 339 | # else
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| 340 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
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| 341 | if (pStats)
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| 342 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
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| 343 | # endif
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| 344 | }
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| 345 | #endif
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| 346 |
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| 347 | /* make return value */
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| 348 | switch (cbValue)
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| 349 | {
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| 350 | case 1: *(uint8_t *)pu32Value = 0xff; break;
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| 351 | case 2: *(uint16_t *)pu32Value = 0xffff; break;
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| 352 | case 4: *(uint32_t *)pu32Value = 0xffffffff; break;
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| 353 | default:
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| 354 | AssertMsgFailed(("Invalid I/O port size %d. Port=%d\n", cbValue, Port));
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| 355 | return VERR_IOM_INVALID_IOPORT_SIZE;
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| 356 | }
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| 357 | Log3(("IOMIOPortRead: Port=%RTiop *pu32=%08RX32 cb=%d rc=VINF_SUCCESS\n", Port, *pu32Value, cbValue));
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| 358 | return VINF_SUCCESS;
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| 359 | }
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| 360 |
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| 361 |
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| 362 | /**
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| 363 | * Reads the string buffer of an I/O port register.
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| 364 | *
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| 365 | * @returns Strict VBox status code. Informational status codes other than the one documented
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| 366 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
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| 367 | * @retval VINF_SUCCESS Success.
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| 368 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
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| 369 | * status code must be passed on to EM.
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| 370 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
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| 371 | *
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| 372 | * @param pVM VM handle.
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| 373 | * @param Port The port to read.
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| 374 | * @param pGCPtrDst Pointer to the destination buffer (GC, incremented appropriately).
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| 375 | * @param pcTransfers Pointer to the number of transfer units to read, on return remaining transfer units.
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| 376 | * @param cb Size of the transfer unit (1, 2 or 4 bytes).
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| 377 | * */
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| 378 | IOMDECL(int) IOMIOPortReadString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrDst, PRTGCUINTREG pcTransfers, unsigned cb)
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| 379 | {
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| 380 | #ifdef LOG_ENABLED
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| 381 | const RTGCUINTREG cTransfers = *pcTransfers;
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| 382 | #endif
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| 383 | #ifdef VBOX_WITH_STATISTICS
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| 384 | /*
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|---|
| 385 | * Get the statistics record.
|
|---|
| 386 | */
|
|---|
| 387 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastRead);
|
|---|
| 388 | if (!pStats || pStats->Core.Key != Port)
|
|---|
| 389 | {
|
|---|
| 390 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
|
|---|
| 391 | if (pStats)
|
|---|
| 392 | CTXALLSUFF(pVM->iom.s.pStatsLastRead) = pStats;
|
|---|
| 393 | }
|
|---|
| 394 | #endif
|
|---|
| 395 |
|
|---|
| 396 | /*
|
|---|
| 397 | * Get handler for current context.
|
|---|
| 398 | */
|
|---|
| 399 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastRead);
|
|---|
| 400 | if ( !pRange
|
|---|
| 401 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
|
|---|
| 402 | {
|
|---|
| 403 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
|
|---|
| 404 | if (pRange)
|
|---|
| 405 | CTXALLSUFF(pVM->iom.s.pRangeLastRead) = pRange;
|
|---|
| 406 | }
|
|---|
| 407 | #ifdef IN_GC
|
|---|
| 408 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
|
|---|
| 409 | #endif
|
|---|
| 410 |
|
|---|
| 411 | if (pRange)
|
|---|
| 412 | {
|
|---|
| 413 | /*
|
|---|
| 414 | * Found a range.
|
|---|
| 415 | */
|
|---|
| 416 | #ifndef IN_RING3
|
|---|
| 417 | if (!pRange->pfnInStrCallback)
|
|---|
| 418 | {
|
|---|
| 419 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 420 | if (pStats)
|
|---|
| 421 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
|
|---|
| 422 | # endif
|
|---|
| 423 | return VINF_IOM_HC_IOPORT_READ;
|
|---|
| 424 | }
|
|---|
| 425 | #endif
|
|---|
| 426 | /* call the device. */
|
|---|
| 427 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 428 | if (pStats)
|
|---|
| 429 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfIn), a);
|
|---|
| 430 | #endif
|
|---|
| 431 |
|
|---|
| 432 | int rc = pRange->pfnInStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrDst, pcTransfers, cb);
|
|---|
| 433 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 434 | if (pStats)
|
|---|
| 435 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfIn), a);
|
|---|
| 436 | if (rc == VINF_SUCCESS && pStats)
|
|---|
| 437 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
|
|---|
| 438 | # ifndef IN_RING3
|
|---|
| 439 | else if (rc == VINF_IOM_HC_IOPORT_READ && pStats)
|
|---|
| 440 | STAM_COUNTER_INC(&pStats->CTXALLMID(In, ToR3));
|
|---|
| 441 | # endif
|
|---|
| 442 | #endif
|
|---|
| 443 | Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n",
|
|---|
| 444 | Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb, rc));
|
|---|
| 445 | return rc;
|
|---|
| 446 | }
|
|---|
| 447 |
|
|---|
| 448 | #ifndef IN_RING3
|
|---|
| 449 | /*
|
|---|
| 450 | * Handler in ring-3?
|
|---|
| 451 | */
|
|---|
| 452 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
|
|---|
| 453 | if (pRangeR3)
|
|---|
| 454 | {
|
|---|
| 455 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 456 | if (pStats)
|
|---|
| 457 | STAM_COUNTER_INC(&pStats->CTXALLMID(In,ToR3));
|
|---|
| 458 | # endif
|
|---|
| 459 | return VINF_IOM_HC_IOPORT_READ;
|
|---|
| 460 | }
|
|---|
| 461 | #endif
|
|---|
| 462 |
|
|---|
| 463 | /*
|
|---|
| 464 | * Ok, no handler for this port.
|
|---|
| 465 | */
|
|---|
| 466 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 467 | if (pStats)
|
|---|
| 468 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
|
|---|
| 469 | else
|
|---|
| 470 | {
|
|---|
| 471 | # ifndef IN_RING3
|
|---|
| 472 | /* Ring-3 will have to create the statistics record. */
|
|---|
| 473 | return VINF_IOM_HC_IOPORT_READ;
|
|---|
| 474 | # else
|
|---|
| 475 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
|
|---|
| 476 | if (pStats)
|
|---|
| 477 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(In));
|
|---|
| 478 | # endif
|
|---|
| 479 | }
|
|---|
| 480 | #endif
|
|---|
| 481 |
|
|---|
| 482 | Log3(("IOMIOPortReadStr: Port=%RTiop pGCPtrDst=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n",
|
|---|
| 483 | Port, pGCPtrDst, pcTransfers, cTransfers, *pcTransfers, cb));
|
|---|
| 484 | return VINF_SUCCESS;
|
|---|
| 485 | }
|
|---|
| 486 |
|
|---|
| 487 |
|
|---|
| 488 | /**
|
|---|
| 489 | * Writes to an I/O port register.
|
|---|
| 490 | *
|
|---|
| 491 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 492 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 493 | * @retval VINF_SUCCESS Success.
|
|---|
| 494 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 495 | * status code must be passed on to EM.
|
|---|
| 496 | * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
|
|---|
| 497 | *
|
|---|
| 498 | * @param pVM VM handle.
|
|---|
| 499 | * @param Port The port to write to.
|
|---|
| 500 | * @param u32Value The value to write.
|
|---|
| 501 | * @param cbValue The size of the register to read in bytes. 1, 2 or 4 bytes.
|
|---|
| 502 | */
|
|---|
| 503 | IOMDECL(int) IOMIOPortWrite(PVM pVM, RTIOPORT Port, uint32_t u32Value, size_t cbValue)
|
|---|
| 504 | {
|
|---|
| 505 | /** @todo bird: When I get time, I'll remove the GC tree and link the GC entries to the ring-3 node. */
|
|---|
| 506 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 507 | /*
|
|---|
| 508 | * Find the statistics record.
|
|---|
| 509 | */
|
|---|
| 510 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite);
|
|---|
| 511 | if (!pStats || pStats->Core.Key != Port)
|
|---|
| 512 | {
|
|---|
| 513 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
|
|---|
| 514 | if (pStats)
|
|---|
| 515 | CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats;
|
|---|
| 516 | }
|
|---|
| 517 | #endif
|
|---|
| 518 |
|
|---|
| 519 | /*
|
|---|
| 520 | * Get handler for current context.
|
|---|
| 521 | */
|
|---|
| 522 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite);
|
|---|
| 523 | if ( !pRange
|
|---|
| 524 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
|
|---|
| 525 | {
|
|---|
| 526 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
|
|---|
| 527 | if (pRange)
|
|---|
| 528 | CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange;
|
|---|
| 529 | }
|
|---|
| 530 | #ifdef IN_GC
|
|---|
| 531 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange));
|
|---|
| 532 | #endif
|
|---|
| 533 |
|
|---|
| 534 | if (pRange)
|
|---|
| 535 | {
|
|---|
| 536 | /*
|
|---|
| 537 | * Found a range.
|
|---|
| 538 | */
|
|---|
| 539 | #ifndef IN_RING3
|
|---|
| 540 | if (!pRange->pfnOutCallback)
|
|---|
| 541 | {
|
|---|
| 542 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 543 | if (pStats)
|
|---|
| 544 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 545 | # endif
|
|---|
| 546 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 547 | }
|
|---|
| 548 | #endif
|
|---|
| 549 | /* call the device. */
|
|---|
| 550 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 551 | if (pStats)
|
|---|
| 552 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 553 | #endif
|
|---|
| 554 | int rc = pRange->pfnOutCallback(pRange->pDevIns, pRange->pvUser, Port, u32Value, cbValue);
|
|---|
| 555 |
|
|---|
| 556 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 557 | if (pStats)
|
|---|
| 558 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 559 | if (rc == VINF_SUCCESS && pStats)
|
|---|
| 560 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 561 | # ifndef IN_RING3
|
|---|
| 562 | else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats)
|
|---|
| 563 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3));
|
|---|
| 564 | # endif
|
|---|
| 565 | #endif
|
|---|
| 566 | Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d rc=%Vrc\n", Port, u32Value, cbValue, rc));
|
|---|
| 567 | return rc;
|
|---|
| 568 | }
|
|---|
| 569 |
|
|---|
| 570 | #ifndef IN_RING3
|
|---|
| 571 | /*
|
|---|
| 572 | * Handler in ring-3?
|
|---|
| 573 | */
|
|---|
| 574 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
|
|---|
| 575 | if (pRangeR3)
|
|---|
| 576 | {
|
|---|
| 577 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 578 | if (pStats)
|
|---|
| 579 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 580 | # endif
|
|---|
| 581 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 582 | }
|
|---|
| 583 | #endif
|
|---|
| 584 |
|
|---|
| 585 | /*
|
|---|
| 586 | * Ok, no handler for that port.
|
|---|
| 587 | */
|
|---|
| 588 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 589 | /* statistics. */
|
|---|
| 590 | if (pStats)
|
|---|
| 591 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 592 | else
|
|---|
| 593 | {
|
|---|
| 594 | # ifndef IN_RING3
|
|---|
| 595 | /* R3 will have to create the statistics record. */
|
|---|
| 596 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 597 | # else
|
|---|
| 598 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
|
|---|
| 599 | if (pStats)
|
|---|
| 600 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 601 | # endif
|
|---|
| 602 | }
|
|---|
| 603 | #endif
|
|---|
| 604 | Log3(("IOMIOPortWrite: Port=%RTiop u32=%08RX32 cb=%d nop\n", Port, u32Value, cbValue));
|
|---|
| 605 | return VINF_SUCCESS;
|
|---|
| 606 | }
|
|---|
| 607 |
|
|---|
| 608 |
|
|---|
| 609 | /**
|
|---|
| 610 | * Writes the string buffer of an I/O port register.
|
|---|
| 611 | *
|
|---|
| 612 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 613 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 614 | * @retval VINF_SUCCESS Success.
|
|---|
| 615 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 616 | * status code must be passed on to EM.
|
|---|
| 617 | * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
|
|---|
| 618 | *
|
|---|
| 619 | * @param pVM VM handle.
|
|---|
| 620 | * @param Port The port to write.
|
|---|
| 621 | * @param pGCPtrSrc Pointer to the source buffer (GC, incremented appropriately).
|
|---|
| 622 | * @param pcTransfers Pointer to the number of transfer units to write, on return remaining transfer units.
|
|---|
| 623 | * @param cb Size of the transfer unit (1, 2 or 4 bytes).
|
|---|
| 624 | * */
|
|---|
| 625 | IOMDECL(int) IOMIOPortWriteString(PVM pVM, RTIOPORT Port, PRTGCPTR pGCPtrSrc, PRTGCUINTREG pcTransfers, unsigned cb)
|
|---|
| 626 | {
|
|---|
| 627 | #ifdef LOG_ENABLED
|
|---|
| 628 | const RTGCUINTREG cTransfers = *pcTransfers;
|
|---|
| 629 | #endif
|
|---|
| 630 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 631 | /*
|
|---|
| 632 | * Get the statistics record.
|
|---|
| 633 | */
|
|---|
| 634 | PIOMIOPORTSTATS pStats = CTXALLSUFF(pVM->iom.s.pStatsLastWrite);
|
|---|
| 635 | if (!pStats || pStats->Core.Key != Port)
|
|---|
| 636 | {
|
|---|
| 637 | pStats = (PIOMIOPORTSTATS)RTAvloIOPortGet(&pVM->iom.s.CTXSUFF(pTrees)->IOPortStatTree, Port);
|
|---|
| 638 | if (pStats)
|
|---|
| 639 | CTXALLSUFF(pVM->iom.s.pStatsLastWrite) = pStats;
|
|---|
| 640 | }
|
|---|
| 641 | #endif
|
|---|
| 642 |
|
|---|
| 643 | /*
|
|---|
| 644 | * Get handler for current context.
|
|---|
| 645 | */
|
|---|
| 646 | CTXALLSUFF(PIOMIOPORTRANGE) pRange = CTXALLSUFF(pVM->iom.s.pRangeLastWrite);
|
|---|
| 647 | if ( !pRange
|
|---|
| 648 | || (unsigned)Port - (unsigned)pRange->Port >= (unsigned)pRange->cPorts)
|
|---|
| 649 | {
|
|---|
| 650 | pRange = iomIOPortGetRange(&pVM->iom.s, Port);
|
|---|
| 651 | if (pRange)
|
|---|
| 652 | CTXALLSUFF(pVM->iom.s.pRangeLastWrite) = pRange;
|
|---|
| 653 | }
|
|---|
| 654 | #ifdef IN_GC
|
|---|
| 655 | Assert(!pRange || MMHyperIsInsideArea(pVM, pRange)); /** @todo r=bird: there is a macro for this which skips the #if'ing. */
|
|---|
| 656 | #endif
|
|---|
| 657 |
|
|---|
| 658 | if (pRange)
|
|---|
| 659 | {
|
|---|
| 660 | /*
|
|---|
| 661 | * Found a range.
|
|---|
| 662 | */
|
|---|
| 663 | #ifndef IN_RING3
|
|---|
| 664 | if (!pRange->pfnOutStrCallback)
|
|---|
| 665 | {
|
|---|
| 666 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 667 | if (pStats)
|
|---|
| 668 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 669 | # endif
|
|---|
| 670 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 671 | }
|
|---|
| 672 | #endif
|
|---|
| 673 | /* call the device. */
|
|---|
| 674 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 675 | if (pStats)
|
|---|
| 676 | STAM_PROFILE_ADV_START(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 677 | #endif
|
|---|
| 678 | int rc = pRange->pfnOutStrCallback(pRange->pDevIns, pRange->pvUser, Port, pGCPtrSrc, pcTransfers, cb);
|
|---|
| 679 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 680 | if (pStats)
|
|---|
| 681 | STAM_PROFILE_ADV_STOP(&pStats->CTXALLSUFF(ProfOut), a);
|
|---|
| 682 | if (rc == VINF_SUCCESS && pStats)
|
|---|
| 683 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 684 | # ifndef IN_RING3
|
|---|
| 685 | else if (rc == VINF_IOM_HC_IOPORT_WRITE && pStats)
|
|---|
| 686 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out, ToR3));
|
|---|
| 687 | # endif
|
|---|
| 688 | #endif
|
|---|
| 689 | Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=%Vrc\n",
|
|---|
| 690 | Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb, rc));
|
|---|
| 691 | return rc;
|
|---|
| 692 | }
|
|---|
| 693 |
|
|---|
| 694 | #ifndef IN_RING3
|
|---|
| 695 | /*
|
|---|
| 696 | * Handler in ring-3?
|
|---|
| 697 | */
|
|---|
| 698 | PIOMIOPORTRANGER3 pRangeR3 = iomIOPortGetRangeHC(&pVM->iom.s, Port);
|
|---|
| 699 | if (pRangeR3)
|
|---|
| 700 | {
|
|---|
| 701 | # ifdef VBOX_WITH_STATISTICS
|
|---|
| 702 | if (pStats)
|
|---|
| 703 | STAM_COUNTER_INC(&pStats->CTXALLMID(Out,ToR3));
|
|---|
| 704 | # endif
|
|---|
| 705 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 706 | }
|
|---|
| 707 | #endif
|
|---|
| 708 |
|
|---|
| 709 | /*
|
|---|
| 710 | * Ok, no handler for this port.
|
|---|
| 711 | */
|
|---|
| 712 | #ifdef VBOX_WITH_STATISTICS
|
|---|
| 713 | if (pStats)
|
|---|
| 714 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 715 | else
|
|---|
| 716 | {
|
|---|
| 717 | # ifndef IN_RING3
|
|---|
| 718 | /* Ring-3 will have to create the statistics record. */
|
|---|
| 719 | return VINF_IOM_HC_IOPORT_WRITE;
|
|---|
| 720 | # else
|
|---|
| 721 | pStats = iomr3IOPortStatsCreate(pVM, Port, NULL);
|
|---|
| 722 | if (pStats)
|
|---|
| 723 | STAM_COUNTER_INC(&pStats->CTXALLSUFF(Out));
|
|---|
| 724 | # endif
|
|---|
| 725 | }
|
|---|
| 726 | #endif
|
|---|
| 727 |
|
|---|
| 728 | Log3(("IOMIOPortWriteStr: Port=%RTiop pGCPtrSrc=%p pcTransfer=%p:{%#x->%#x} cb=%d rc=VINF_SUCCESS\n",
|
|---|
| 729 | Port, pGCPtrSrc, pcTransfers, cTransfers, *pcTransfers, cb));
|
|---|
| 730 | return VINF_SUCCESS;
|
|---|
| 731 | }
|
|---|
| 732 |
|
|---|
| 733 |
|
|---|
| 734 | /**
|
|---|
| 735 | * Checks that the operation is allowed according to the IOPL
|
|---|
| 736 | * level and I/O bitmap.
|
|---|
| 737 | *
|
|---|
| 738 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 739 | * here are to be treated as internal failure.
|
|---|
| 740 | * @retval VINF_SUCCESS Success.
|
|---|
| 741 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
|---|
| 742 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
|---|
| 743 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
|---|
| 744 | *
|
|---|
| 745 | * @param pVM VM handle.
|
|---|
| 746 | * @param pCtxCore Pointer to register frame.
|
|---|
| 747 | * @param Port The I/O port number.
|
|---|
| 748 | * @param cb The access size.
|
|---|
| 749 | */
|
|---|
| 750 | IOMDECL(int) IOMInterpretCheckPortIOAccess(PVM pVM, PCPUMCTXCORE pCtxCore, RTIOPORT Port, unsigned cb)
|
|---|
| 751 | {
|
|---|
| 752 | /*
|
|---|
| 753 | * If this isn't ring-0, we have to check for I/O privileges.
|
|---|
| 754 | */
|
|---|
| 755 | uint32_t efl = CPUMRawGetEFlags(pVM, pCtxCore);
|
|---|
| 756 | uint32_t cpl = CPUMGetGuestCPL(pVM, pCtxCore);
|
|---|
| 757 |
|
|---|
| 758 | if ( ( cpl > 0
|
|---|
| 759 | && X86_EFL_GET_IOPL(efl) < cpl)
|
|---|
| 760 | || pCtxCore->eflags.Bits.u1VM /* IOPL is ignored in V86 mode; always check TSS bitmap */
|
|---|
| 761 | )
|
|---|
| 762 | {
|
|---|
| 763 | /*
|
|---|
| 764 | * Get TSS location and check if there can be a I/O bitmap.
|
|---|
| 765 | */
|
|---|
| 766 | RTGCUINTPTR GCPtrTss;
|
|---|
| 767 | RTGCUINTPTR cbTss;
|
|---|
| 768 | bool fCanHaveIOBitmap;
|
|---|
| 769 | int rc = SELMGetTSSInfo(pVM, &GCPtrTss, &cbTss, &fCanHaveIOBitmap);
|
|---|
| 770 | if (VBOX_FAILURE(rc))
|
|---|
| 771 | {
|
|---|
| 772 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d %Vrc -> #GP(0)\n", Port, cb, rc));
|
|---|
| 773 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 774 | }
|
|---|
| 775 |
|
|---|
| 776 | if ( !fCanHaveIOBitmap
|
|---|
| 777 | || cbTss <= sizeof(VBOXTSS))
|
|---|
| 778 | {
|
|---|
| 779 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d cbTss=%#x fCanHaveIOBitmap=%RTbool -> #GP(0)\n",
|
|---|
| 780 | Port, cb, cbTss, fCanHaveIOBitmap));
|
|---|
| 781 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 782 | }
|
|---|
| 783 |
|
|---|
| 784 | /*
|
|---|
| 785 | * Fetch the I/O bitmap offset.
|
|---|
| 786 | */
|
|---|
| 787 | uint16_t offIOPB;
|
|---|
| 788 | rc = PGMPhysInterpretedRead(pVM, pCtxCore, &offIOPB, GCPtrTss + RT_OFFSETOF(VBOXTSS, offIoBitmap), sizeof(offIOPB));
|
|---|
| 789 | if (rc != VINF_SUCCESS)
|
|---|
| 790 | {
|
|---|
| 791 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv %Vrc\n",
|
|---|
| 792 | Port, cb, GCPtrTss, rc));
|
|---|
| 793 | return rc;
|
|---|
| 794 | }
|
|---|
| 795 |
|
|---|
| 796 | /*
|
|---|
| 797 | * Check the limit and read the two bitmap bytes.
|
|---|
| 798 | */
|
|---|
| 799 | uint32_t offTss = offIOPB + (Port >> 3);
|
|---|
| 800 | if (offTss + 1 >= cbTss)
|
|---|
| 801 | {
|
|---|
| 802 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x -> #GP(0)\n",
|
|---|
| 803 | Port, cb, offTss, cbTss));
|
|---|
| 804 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 805 | }
|
|---|
| 806 | uint16_t u16;
|
|---|
| 807 | rc = PGMPhysInterpretedRead(pVM, pCtxCore, &u16, GCPtrTss + offTss, sizeof(u16));
|
|---|
| 808 | if (rc != VINF_SUCCESS)
|
|---|
| 809 | {
|
|---|
| 810 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d GCPtrTss=%VGv offTss=%#x -> %Vrc\n",
|
|---|
| 811 | Port, cb, GCPtrTss, offTss, rc));
|
|---|
| 812 | return rc;
|
|---|
| 813 | }
|
|---|
| 814 |
|
|---|
| 815 | /*
|
|---|
| 816 | * All the bits must be clear.
|
|---|
| 817 | */
|
|---|
| 818 | if ((u16 >> (Port & 7)) & ((1 << cb) - 1))
|
|---|
| 819 | {
|
|---|
| 820 | Log(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d u16=%#x -> #GP(0)\n",
|
|---|
| 821 | Port, cb, u16, offTss));
|
|---|
| 822 | return TRPMRaiseXcptErr(pVM, pCtxCore, X86_XCPT_GP, 0);
|
|---|
| 823 | }
|
|---|
| 824 | LogFlow(("iomInterpretCheckPortIOAccess: Port=%RTiop cb=%d offTss=%#x cbTss=%#x u16=%#x -> OK\n",
|
|---|
| 825 | Port, cb, u16, offTss, cbTss));
|
|---|
| 826 | }
|
|---|
| 827 | return VINF_SUCCESS;
|
|---|
| 828 | }
|
|---|
| 829 |
|
|---|
| 830 | /**
|
|---|
| 831 | * IN <AL|AX|EAX>, <DX|imm16>
|
|---|
| 832 | *
|
|---|
| 833 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 834 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 835 | * @retval VINF_SUCCESS Success.
|
|---|
| 836 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 837 | * status code must be passed on to EM.
|
|---|
| 838 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
|
|---|
| 839 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
|---|
| 840 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
|---|
| 841 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
|---|
| 842 | *
|
|---|
| 843 | * @param pVM The virtual machine (GC pointer ofcourse).
|
|---|
| 844 | * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
|
|---|
| 845 | * @param pCpu Disassembler CPU state.
|
|---|
| 846 | */
|
|---|
| 847 | IOMDECL(int) IOMInterpretIN(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
|
|---|
| 848 | {
|
|---|
| 849 | #ifdef IN_GC
|
|---|
| 850 | STAM_COUNTER_INC(&pVM->iom.s.StatGCInstIn);
|
|---|
| 851 | #endif
|
|---|
| 852 |
|
|---|
| 853 | /*
|
|---|
| 854 | * Get port number from second parameter.
|
|---|
| 855 | * And get the register size from the first parameter.
|
|---|
| 856 | */
|
|---|
| 857 | uint32_t uPort = 0;
|
|---|
| 858 | unsigned cbSize = 0;
|
|---|
| 859 | bool fRc = iomGCGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &uPort, &cbSize);
|
|---|
| 860 | AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc);
|
|---|
| 861 |
|
|---|
| 862 | cbSize = iomGCGetRegSize(pCpu, &pCpu->param1);
|
|---|
| 863 | Assert(cbSize > 0);
|
|---|
| 864 | int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
|
|---|
| 865 | if (rc == VINF_SUCCESS)
|
|---|
| 866 | {
|
|---|
| 867 | /*
|
|---|
| 868 | * Attemp to read the port.
|
|---|
| 869 | */
|
|---|
| 870 | uint32_t u32Data = ~0U;
|
|---|
| 871 | rc = IOMIOPortRead(pVM, uPort, &u32Data, cbSize);
|
|---|
| 872 | if (IOM_SUCCESS(rc))
|
|---|
| 873 | {
|
|---|
| 874 | /*
|
|---|
| 875 | * Store the result in the AL|AX|EAX register.
|
|---|
| 876 | */
|
|---|
| 877 | fRc = iomGCSaveDataToReg(pCpu, &pCpu->param1, pRegFrame, u32Data);
|
|---|
| 878 | AssertMsg(fRc, ("Failed to store register value!\n")); NOREF(fRc);
|
|---|
| 879 | }
|
|---|
| 880 | else
|
|---|
| 881 | AssertMsg(rc == VINF_IOM_HC_IOPORT_READ || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 882 | }
|
|---|
| 883 | else
|
|---|
| 884 | AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP || rc == VINF_TRPM_XCPT_DISPATCHED || rc == VINF_TRPM_XCPT_DISPATCHED || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 885 | return rc;
|
|---|
| 886 | }
|
|---|
| 887 |
|
|---|
| 888 |
|
|---|
| 889 | /**
|
|---|
| 890 | * OUT <DX|imm16>, <AL|AX|EAX>
|
|---|
| 891 | *
|
|---|
| 892 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 893 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 894 | * @retval VINF_SUCCESS Success.
|
|---|
| 895 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 896 | * status code must be passed on to EM.
|
|---|
| 897 | * @retval VINF_IOM_HC_IOPORT_WRITE Defer the write to ring-3. (R0/GC only)
|
|---|
| 898 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
|---|
| 899 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
|---|
| 900 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
|---|
| 901 | *
|
|---|
| 902 | * @param pVM The virtual machine (GC pointer ofcourse).
|
|---|
| 903 | * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
|
|---|
| 904 | * @param pCpu Disassembler CPU state.
|
|---|
| 905 | */
|
|---|
| 906 | IOMDECL(int) IOMInterpretOUT(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
|
|---|
| 907 | {
|
|---|
| 908 | #ifdef IN_GC
|
|---|
| 909 | STAM_COUNTER_INC(&pVM->iom.s.StatGCInstOut);
|
|---|
| 910 | #endif
|
|---|
| 911 |
|
|---|
| 912 | /*
|
|---|
| 913 | * Get port number from first parameter.
|
|---|
| 914 | * And get the register size and value from the second parameter.
|
|---|
| 915 | */
|
|---|
| 916 | uint32_t uPort = 0;
|
|---|
| 917 | unsigned cbSize = 0;
|
|---|
| 918 | bool fRc = iomGCGetRegImmData(pCpu, &pCpu->param1, pRegFrame, &uPort, &cbSize);
|
|---|
| 919 | AssertMsg(fRc, ("Failed to get reg/imm port number!\n")); NOREF(fRc);
|
|---|
| 920 |
|
|---|
| 921 | int rc = IOMInterpretCheckPortIOAccess(pVM, pRegFrame, uPort, cbSize);
|
|---|
| 922 | if (rc == VINF_SUCCESS)
|
|---|
| 923 | {
|
|---|
| 924 | uint32_t u32Data = 0;
|
|---|
| 925 | fRc = iomGCGetRegImmData(pCpu, &pCpu->param2, pRegFrame, &u32Data, &cbSize);
|
|---|
| 926 | AssertMsg(fRc, ("Failed to get reg value!\n")); NOREF(fRc);
|
|---|
| 927 |
|
|---|
| 928 | /*
|
|---|
| 929 | * Attempt to write to the port.
|
|---|
| 930 | */
|
|---|
| 931 | rc = IOMIOPortWrite(pVM, uPort, u32Data, cbSize);
|
|---|
| 932 | AssertMsg(rc == VINF_SUCCESS || rc == VINF_IOM_HC_IOPORT_WRITE || (rc >= VINF_EM_FIRST && rc <= VINF_EM_LAST) || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 933 | }
|
|---|
| 934 | else
|
|---|
| 935 | AssertMsg(rc == VINF_EM_RAW_GUEST_TRAP || rc == VINF_TRPM_XCPT_DISPATCHED || rc == VINF_TRPM_XCPT_DISPATCHED || VBOX_FAILURE(rc), ("%Vrc\n", rc));
|
|---|
| 936 | return rc;
|
|---|
| 937 | }
|
|---|
