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/* $Id: IOMRC.cpp $ */
/** @file
* IOM - Input / Output Monitor - Raw-Mode Context.
*/
/*
* Copyright (C) 2006-2012 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.
*/
/*******************************************************************************
* Header Files *
*******************************************************************************/
#define LOG_GROUP LOG_GROUP_IOM
#include <VBox/vmm/iom.h>
#include <VBox/vmm/cpum.h>
#include <VBox/vmm/pgm.h>
#include <VBox/vmm/selm.h>
#include <VBox/vmm/mm.h>
#include <VBox/vmm/em.h>
#include <VBox/vmm/pgm.h>
#include <VBox/vmm/trpm.h>
#include "IOMInternal.h"
#include <VBox/vmm/vm.h>
#include <VBox/dis.h>
#include <VBox/disopcode.h>
#include <VBox/param.h>
#include <VBox/err.h>
#include <iprt/assert.h>
#include <VBox/log.h>
#include <iprt/asm.h>
#include <iprt/string.h>
/**
* Attempts to service an IN/OUT instruction.
*
* The \#GP trap handler in RC will call this function if the opcode causing
* the trap is a in or out type instruction. (Call it indirectly via EM that
* is.)
*
* @returns Strict VBox status code. Informational status codes other than the one documented
* here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
* @retval VINF_SUCCESS Success.
* @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
* status code must be passed on to EM.
* @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
* @retval VINF_EM_RAW_EMULATE_INSTR Defer the read to the REM.
* @retval VINF_IOM_R3_IOPORT_READ Defer the read to ring-3.
* @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
* @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
*
* @param pVM The virtual machine handle.
* @param pVCpu Pointer to the virtual CPU structure of the caller.
* @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
* @param pCpu Disassembler CPU state.
*/
VMMRCDECL(VBOXSTRICTRC) IOMRCIOPortHandler(PVM pVM, PVMCPU pVCpu, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
{
switch (pCpu->pCurInstr->uOpcode)
{
case OP_IN:
return IOMInterpretIN(pVM, pVCpu, pRegFrame, pCpu);
case OP_OUT:
return IOMInterpretOUT(pVM, pVCpu, pRegFrame, pCpu);
case OP_INSB:
case OP_INSWD:
return IOMInterpretINS(pVM, pVCpu, pRegFrame, pCpu);
case OP_OUTSB:
case OP_OUTSWD:
return IOMInterpretOUTS(pVM, pVCpu, pRegFrame, pCpu);
/*
* The opcode wasn't know to us, freak out.
*/
default:
AssertMsgFailed(("Unknown I/O port access opcode %d.\n", pCpu->pCurInstr->uOpcode));
return VERR_IOM_IOPORT_UNKNOWN_OPCODE;
}
}
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