/* $Id: CPUMRC.cpp 41943 2012-06-28 02:33:43Z vboxsync $ */
/** @file
 * CPUM - Raw-mode Context Code.
 */

/*
 * 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_CPUM
#include <VBox/vmm/cpum.h>
#include <VBox/vmm/vmm.h>
#include <VBox/vmm/trpm.h>
#include "CPUMInternal.h"
#include <VBox/vmm/vm.h>
#include <VBox/err.h>
#include <iprt/assert.h>
#include <VBox/log.h>


/*******************************************************************************
*   Internal Functions                                                         *
*******************************************************************************/
RT_C_DECLS_BEGIN /* addressed from asm (not called so no DECLASM). */
DECLCALLBACK(int) cpumRCHandleNPAndGP(PVM pVM, PCPUMCTXCORE pRegFrame, uintptr_t uUser);
RT_C_DECLS_END


/**
 * Deal with traps occurring during segment loading and IRET when resuming guest
 * context execution.
 *
 * @returns VBox status code.
 * @param   pVM         Pointer to the VM.
 * @param   pRegFrame   The register frame.
 * @param   uUser       User argument. In this case a combination of the
 *                      CPUM_HANDLER_* \#defines.
 */
DECLCALLBACK(int) cpumRCHandleNPAndGP(PVM pVM, PCPUMCTXCORE pRegFrame, uintptr_t uUser)
{
    Log(("********************************************************\n"));
    Log(("cpumRCHandleNPAndGP: eip=%RX32 uUser=%#x\n", pRegFrame->eip, uUser));
    Log(("********************************************************\n"));

    /*
     * Take action based on what's happened.
     */
    switch (uUser & CPUM_HANDLER_TYPEMASK)
    {
        case CPUM_HANDLER_GS:
        case CPUM_HANDLER_DS:
        case CPUM_HANDLER_ES:
        case CPUM_HANDLER_FS:
            TRPMGCHyperReturnToHost(pVM, VINF_EM_RAW_STALE_SELECTOR);
            break;

        case CPUM_HANDLER_IRET:
            TRPMGCHyperReturnToHost(pVM, VINF_EM_RAW_IRET_TRAP);
            break;
    }

    AssertMsgFailed(("uUser=%#x eip=%#x\n", uUser, pRegFrame->eip));
    return VERR_TRPM_DONT_PANIC;
}