CPUMRC.cpp revision 2cf7b059a58c41e945cd3428ec1721835e398f5c
/* $Id$ */
/** @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;
}