VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMRC/IOMRC.cpp@ 36847

Last change on this file since 36847 was 35346, checked in by vboxsync, 14 years ago

VMM reorg: Moving the public include files from include/VBox to include/VBox/vmm.

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File size: 3.3 KB
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1/* $Id: IOMRC.cpp 35346 2010-12-27 16:13:13Z vboxsync $ */
2/** @file
3 * IOM - Input / Output Monitor - Guest Context.
4 */
5
6/*
7 * Copyright (C) 2006-2007 Oracle Corporation
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 (GPL) as published by the Free Software
13 * Foundation, in version 2 as it comes in the "COPYING" file of the
14 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15 * hope that it will 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/vmm/iom.h>
24#include <VBox/vmm/cpum.h>
25#include <VBox/vmm/pgm.h>
26#include <VBox/vmm/selm.h>
27#include <VBox/vmm/mm.h>
28#include <VBox/vmm/em.h>
29#include <VBox/vmm/pgm.h>
30#include <VBox/vmm/trpm.h>
31#include "IOMInternal.h"
32#include <VBox/vmm/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 of course).
63 * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
64 * @param pCpu Disassembler CPU state.
65 */
66VMMRCDECL(VBOXSTRICTRC) 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
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