| 1 | /* $Id: IOMGC.cpp 4071 2007-08-07 17:07:59Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IOM - Input / Output Monitor - Guest Context.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2006-2007 innotek GmbH
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License as published by the Free Software Foundation,
|
|---|
| 13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
|
|---|
| 14 | * distribution. VirtualBox OSE is distributed in the hope that it will
|
|---|
| 15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | */
|
|---|
| 17 |
|
|---|
| 18 |
|
|---|
| 19 | /*******************************************************************************
|
|---|
| 20 | * Header Files *
|
|---|
| 21 | *******************************************************************************/
|
|---|
| 22 | #define LOG_GROUP LOG_GROUP_IOM
|
|---|
| 23 | #include <VBox/iom.h>
|
|---|
| 24 | #include <VBox/cpum.h>
|
|---|
| 25 | #include <VBox/pgm.h>
|
|---|
| 26 | #include <VBox/selm.h>
|
|---|
| 27 | #include <VBox/mm.h>
|
|---|
| 28 | #include <VBox/em.h>
|
|---|
| 29 | #include <VBox/pgm.h>
|
|---|
| 30 | #include <VBox/trpm.h>
|
|---|
| 31 | #include "IOMInternal.h"
|
|---|
| 32 | #include <VBox/vm.h>
|
|---|
| 33 |
|
|---|
| 34 | #include <VBox/dis.h>
|
|---|
| 35 | #include <VBox/disopcode.h>
|
|---|
| 36 | #include <VBox/param.h>
|
|---|
| 37 | #include <VBox/err.h>
|
|---|
| 38 | #include <iprt/assert.h>
|
|---|
| 39 | #include <VBox/log.h>
|
|---|
| 40 | #include <iprt/asm.h>
|
|---|
| 41 | #include <iprt/string.h>
|
|---|
| 42 |
|
|---|
| 43 |
|
|---|
| 44 |
|
|---|
| 45 | /**
|
|---|
| 46 | * Attempts to service an IN/OUT instruction.
|
|---|
| 47 | *
|
|---|
| 48 | * The \#GP trap handler in GC will call this function if the opcode causing the
|
|---|
| 49 | * trap is a in or out type instruction. (Call it indirectly via EM that is.)
|
|---|
| 50 | *
|
|---|
| 51 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
|---|
| 52 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
|---|
| 53 | * @retval VINF_SUCCESS Success.
|
|---|
| 54 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
|---|
| 55 | * status code must be passed on to EM.
|
|---|
| 56 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
|---|
| 57 | * @retval VINF_EM_RAW_EMULATE_INSTR Defer the read to the REM.
|
|---|
| 58 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
|
|---|
| 59 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
|---|
| 60 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
|---|
| 61 | *
|
|---|
| 62 | * @param pVM The virtual machine (GC pointer ofcourse).
|
|---|
| 63 | * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
|
|---|
| 64 | * @param pCpu Disassembler CPU state.
|
|---|
| 65 | */
|
|---|
| 66 | IOMGCDECL(int) IOMGCIOPortHandler(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
|
|---|
| 67 | {
|
|---|
| 68 | switch (pCpu->pCurInstr->opcode)
|
|---|
| 69 | {
|
|---|
| 70 | case OP_IN:
|
|---|
| 71 | return IOMInterpretIN(pVM, pRegFrame, pCpu);
|
|---|
| 72 |
|
|---|
| 73 | case OP_OUT:
|
|---|
| 74 | return IOMInterpretOUT(pVM, pRegFrame, pCpu);
|
|---|
| 75 |
|
|---|
| 76 | case OP_INSB:
|
|---|
| 77 | case OP_INSWD:
|
|---|
| 78 | return IOMInterpretINS(pVM, pRegFrame, pCpu);
|
|---|
| 79 |
|
|---|
| 80 | case OP_OUTSB:
|
|---|
| 81 | case OP_OUTSWD:
|
|---|
| 82 | return IOMInterpretOUTS(pVM, pRegFrame, pCpu);
|
|---|
| 83 |
|
|---|
| 84 | /*
|
|---|
| 85 | * The opcode wasn't know to us, freak out.
|
|---|
| 86 | */
|
|---|
| 87 | default:
|
|---|
| 88 | AssertMsgFailed(("Unknown I/O port access opcode %d.\n", pCpu->pCurInstr->opcode));
|
|---|
| 89 | return VERR_INTERNAL_ERROR;
|
|---|
| 90 | }
|
|---|
| 91 | }
|
|---|
| 92 |
|
|---|
