vm.h revision 3609dfc9f2733f4dc836c6a6bb3745398f280fce
/** @file
* VM - The Virtual Machine, data.
*/
/*
* Copyright (C) 2006-2007 innotek GmbH
*
* 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 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.
*/
#ifndef ___VBox_vm_h
#define ___VBox_vm_h
#include <VBox/cdefs.h>
#include <VBox/types.h>
#include <VBox/cpum.h>
#include <VBox/stam.h>
#include <VBox/vmapi.h>
#include <VBox/sup.h>
/** @defgroup grp_vm The Virtual Machine
* @{
*/
/** The name of the Guest Context VMM Core module. */
#define VMMGC_MAIN_MODULE_NAME "VMMGC.gc"
/** The name of the Ring 0 Context VMM Core module. */
#define VMMR0_MAIN_MODULE_NAME "VMMR0.r0"
/** VM Forced Action Flags.
*
* Use the VM_FF_SET() and VM_FF_CLEAR() macros to change the force
* action mask of a VM.
*
* @{
*/
/** This action forces the VM to service check and pending interrups on the APIC. */
#define VM_FF_INTERRUPT_APIC RT_BIT_32(0)
/** This action forces the VM to service check and pending interrups on the PIC. */
#define VM_FF_INTERRUPT_PIC RT_BIT_32(1)
/** This action forces the VM to schedule and run pending timer (TM). */
#define VM_FF_TIMER RT_BIT_32(2)
/** PDM Queues are pending. */
#define VM_FF_PDM_QUEUES RT_BIT_32(3)
/** PDM DMA transfers are pending. */
#define VM_FF_PDM_DMA RT_BIT_32(4)
/** PDM critical section unlocking is pending, process promptly upon return to R3. */
#define VM_FF_PDM_CRITSECT RT_BIT_32(5)
/** This action forces the VM to call DBGF so DBGF can service debugger
* requests in the emulation thread.
* This action flag stays asserted till DBGF clears it.*/
#define VM_FF_DBGF RT_BIT_32(8)
/** This action forces the VM to service pending requests from other
* thread or requests which must be executed in another context. */
#define VM_FF_REQUEST RT_BIT_32(9)
/** Terminate the VM immediately. */
#define VM_FF_TERMINATE RT_BIT_32(10)
/** Reset the VM. (postponed) */
#define VM_FF_RESET RT_BIT_32(11)
/** This action forces the VM to resync the page tables before going
* back to execute guest code. (GLOBAL FLUSH) */
#define VM_FF_PGM_SYNC_CR3 RT_BIT_32(16)
/** Same as VM_FF_PGM_SYNC_CR3 except that global pages can be skipped.
* (NON-GLOBAL FLUSH) */
#define VM_FF_PGM_SYNC_CR3_NON_GLOBAL RT_BIT_32(17)
/** PGM needs to allocate handy pages. */
#define VM_FF_PGM_NEED_HANDY_PAGES RT_BIT_32(18)
/** Check the interupt and trap gates */
#define VM_FF_TRPM_SYNC_IDT RT_BIT_32(19)
/** Check Guest's TSS ring 0 stack */
#define VM_FF_SELM_SYNC_TSS RT_BIT_32(20)
/** Check Guest's GDT table */
#define VM_FF_SELM_SYNC_GDT RT_BIT_32(21)
/** Check Guest's LDT table */
#define VM_FF_SELM_SYNC_LDT RT_BIT_32(22)
/** Inhibit interrupts pending. See EMGetInhibitInterruptsPC(). */
#define VM_FF_INHIBIT_INTERRUPTS RT_BIT_32(23)
/** CSAM needs to scan the page that's being executed */
#define VM_FF_CSAM_SCAN_PAGE RT_BIT_32(24)
/** CSAM needs to do some homework. */
#define VM_FF_CSAM_PENDING_ACTION RT_BIT_32(25)
/** Force return to Ring-3. */
#define VM_FF_TO_R3 RT_BIT_32(28)
/** Suspend the VM - debug only. */
#define VM_FF_DEBUG_SUSPEND RT_BIT_32(31)
/** Externally forced actions. Used to quit the idle/wait loop. */
#define VM_FF_EXTERNAL_SUSPENDED_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_REQUEST)
/** Externally forced actions. Used to quit the idle/wait loop. */
#define VM_FF_EXTERNAL_HALTED_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_TIMER | VM_FF_INTERRUPT_APIC | VM_FF_INTERRUPT_PIC | VM_FF_REQUEST | VM_FF_PDM_QUEUES | VM_FF_PDM_DMA)
/** High priority pre-execution actions. */
#define VM_FF_HIGH_PRIORITY_PRE_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_INTERRUPT_APIC | VM_FF_INTERRUPT_PIC | VM_FF_TIMER | VM_FF_DEBUG_SUSPEND \
| VM_FF_PGM_SYNC_CR3 | VM_FF_PGM_SYNC_CR3_NON_GLOBAL | VM_FF_SELM_SYNC_TSS | VM_FF_TRPM_SYNC_IDT | VM_FF_SELM_SYNC_GDT | VM_FF_SELM_SYNC_LDT | VM_FF_PGM_NEED_HANDY_PAGES)
/** High priority pre raw-mode execution mask. */
#define VM_FF_HIGH_PRIORITY_PRE_RAW_MASK (VM_FF_PGM_SYNC_CR3 | VM_FF_PGM_SYNC_CR3_NON_GLOBAL | VM_FF_SELM_SYNC_TSS | VM_FF_TRPM_SYNC_IDT | VM_FF_SELM_SYNC_GDT | VM_FF_SELM_SYNC_LDT | VM_FF_PGM_NEED_HANDY_PAGES \
| VM_FF_INHIBIT_INTERRUPTS)
/** High priority post-execution actions. */
#define VM_FF_HIGH_PRIORITY_POST_MASK (VM_FF_PDM_CRITSECT | VM_FF_CSAM_PENDING_ACTION)
/** Normal priority post-execution actions. */
#define VM_FF_NORMAL_PRIORITY_POST_MASK (VM_FF_TERMINATE | VM_FF_DBGF | VM_FF_RESET | VM_FF_CSAM_SCAN_PAGE)
/** Normal priority actions. */
#define VM_FF_NORMAL_PRIORITY_MASK (VM_FF_REQUEST | VM_FF_PDM_QUEUES | VM_FF_PDM_DMA)
/** Flags to check before resuming guest execution. */
#define VM_FF_RESUME_GUEST_MASK (VM_FF_TO_R3)
/** All the forced flags. */
#define VM_FF_ALL_MASK (~0U)
/** All the forced flags. */
#define VM_FF_ALL_BUT_RAW_MASK (~(VM_FF_HIGH_PRIORITY_PRE_RAW_MASK | VM_FF_CSAM_PENDING_ACTION | VM_FF_PDM_CRITSECT))
/** @} */
/** @def VM_FF_SET
* Sets a force action flag.
*
* @param pVM VM Handle.
* @param fFlag The flag to set.
*/
#if 1
# define VM_FF_SET(pVM, fFlag) ASMAtomicOrU32(&(pVM)->fForcedActions, (fFlag))
#else
# define VM_FF_SET(pVM, fFlag) \
do { ASMAtomicOrU32(&(pVM)->fForcedActions, (fFlag)); \
RTLogPrintf("VM_FF_SET : %08x %s - %s(%d) %s\n", (pVM)->fForcedActions, #fFlag, __FILE__, __LINE__, __FUNCTION__); \
} while (0)
#endif
/** @def VM_FF_CLEAR
* Clears a force action flag.
*
* @param pVM VM Handle.
* @param fFlag The flag to clear.
*/
#if 1
# define VM_FF_CLEAR(pVM, fFlag) ASMAtomicAndU32(&(pVM)->fForcedActions, ~(fFlag))
#else
# define VM_FF_CLEAR(pVM, fFlag) \
do { ASMAtomicAndU32(&(pVM)->fForcedActions, ~(fFlag)); \
RTLogPrintf("VM_FF_CLEAR: %08x %s - %s(%d) %s\n", (pVM)->fForcedActions, #fFlag, __FILE__, __LINE__, __FUNCTION__); \
} while (0)
#endif
/** @def VM_FF_ISSET
* Checks if a force action flag is set.
*
* @param pVM VM Handle.
* @param fFlag The flag to check.
*/
#define VM_FF_ISSET(pVM, fFlag) (((pVM)->fForcedActions & (fFlag)) == (fFlag))
/** @def VM_FF_ISPENDING
* Checks if one or more force action in the specified set is pending.
*
* @param pVM VM Handle.
* @param fFlags The flags to check for.
*/
#define VM_FF_ISPENDING(pVM, fFlags) ((pVM)->fForcedActions & (fFlags))
/** @def VM_IS_EMT
* Checks if the current thread is the emulation thread (EMT).
*
* @remark The ring-0 variation will need attention if we expand the ring-0
* code to let threads other than EMT mess around with the VM.
*/
#ifdef IN_GC
# define VM_IS_EMT(pVM) true
#elif defined(IN_RING0)
# define VM_IS_EMT(pVM) true
#else
# define VM_IS_EMT(pVM) ((pVM)->NativeThreadEMT == RTThreadNativeSelf())
#endif
/** @def VM_ASSERT_EMT
* Asserts that the current thread IS the emulation thread (EMT).
*/
#ifdef IN_GC
# define VM_ASSERT_EMT(pVM) Assert(VM_IS_EMT(pVM))
#elif defined(IN_RING0)
# define VM_ASSERT_EMT(pVM) Assert(VM_IS_EMT(pVM))
#else
# define VM_ASSERT_EMT(pVM) \
AssertMsg(VM_IS_EMT(pVM), \
("Not emulation thread! Thread=%RTnthrd ThreadEMT=%RTnthrd\n", RTThreadNativeSelf(), pVM->NativeThreadEMT))
#endif
/**
* Asserts that the current thread is NOT the emulation thread.
*/
#define VM_ASSERT_OTHER_THREAD(pVM) \
AssertMsg(!VM_IS_EMT(pVM), ("Not other thread!!\n"))
/** This is the VM structure.
*
* It contains (nearly?) all the VM data which have to be available in all
* contexts. Even if it contains all the data the idea is to use APIs not
* to modify all the members all around the place. Therefore we make use of
* unions to hide everything which isn't local to the current source module.
* This means we'll have to pay a little bit of attention when adding new
* members to structures in the unions and make sure to keep the padding sizes
* up to date.
*
* Run tstVMStructSize after update!
*/
typedef struct VM
{
/** The state of the VM.
* This field is read only to everyone except the VM and EM. */
VMSTATE enmVMState;
/** Forced action flags.
* See the VM_FF_* \#defines. Updated atomically.
*/
volatile uint32_t fForcedActions;
/** Pointer to the array of page descriptors for the VM structure allocation. */
R3PTRTYPE(PSUPPAGE) paVMPagesR3;
/** Session handle. For use when calling SUPR0 APIs. */
HCPTRTYPE(PSUPDRVSESSION) pSession;
/** Pointer to the next VM.
* We keep a per process list of VM for the event that a process could
* contain more than one VM.
*/
HCPTRTYPE(struct VM *) pNext;
/** Host Context VM Pointer.
* @obsolete don't use in new code! */
HCPTRTYPE(struct VM *) pVMHC;
/** Ring-3 Host Context VM Pointer. */
R3PTRTYPE(struct VM *) pVMR3;
/** Ring-0 Host Context VM Pointer. */
R0PTRTYPE(struct VM *) pVMR0;
/** Guest Context VM Pointer. */
GCPTRTYPE(struct VM *) pVMGC;
/** @name Public VMM Switcher APIs
* @{ */
/**
* Assembly switch entry point for returning to host context.
* This function will clean up the stack frame.
*
* @param eax The return code, register.
* @param Ctx The guest core context.
* @remark Assume interrupts disabled.
*/
RTGCPTR pfnVMMGCGuestToHostAsmGuestCtx/*(int32_t eax, CPUMCTXCORE Ctx)*/;
/**
* Assembly switch entry point for returning to host context.
*
* This is an alternative entry point which we'll be using when the we have the
* hypervisor context and need to save that before going to the host.
*
* This is typically useful when abandoning the hypervisor because of a trap
* and want the trap state to be saved.
*
* @param eax The return code, register.
* @param ecx Pointer to the hypervisor core context, register.
* @remark Assume interrupts disabled.
*/
RTGCPTR pfnVMMGCGuestToHostAsmHyperCtx/*(int32_t eax, PCPUMCTXCORE ecx)*/;
/**
* Assembly switch entry point for returning to host context.
*
* This is an alternative to the two *Ctx APIs and implies that the context has already
* been saved, or that it's just a brief return to HC and that the caller intends to resume
* whatever it is doing upon 'return' from this call.
*
* @param eax The return code, register.
* @remark Assume interrupts disabled.
*/
RTGCPTR pfnVMMGCGuestToHostAsm/*(int32_t eax)*/;
/** @} */
/** @name Various VM data owned by VM.
* @{ */
/** The thread handle of the emulation thread.
* Use the VM_IS_EMT() macro to check if executing in EMT. */
RTTHREAD ThreadEMT;
/** The native handle of ThreadEMT. Getting the native handle
* is generally faster than getting the IPRT one (except on OS/2 :-). */
RTNATIVETHREAD NativeThreadEMT;
/** @} */
/** @name Various items that are frequently accessed.
* @{ */
/** Raw ring-3 indicator. */
bool fRawR3Enabled;
/** Raw ring-0 indicator. */
bool fRawR0Enabled;
/** PATM enabled flag.
* This is placed here for performance reasons. */
bool fPATMEnabled;
/** CSAM enabled flag.
* This is placed here for performance reasons. */
bool fCSAMEnabled;
/** Hardware VM support is available and enabled.
* This is placed here for performance reasons. */
bool fHWACCMEnabled;
/** @} */
/* padding to make gnuc put the StatQemuToGC where msc does. */
/*#if HC_ARCH_BITS == 32
uint32_t padding0;
#endif */
/** Profiling the total time from Qemu to GC. */
STAMPROFILEADV StatTotalQemuToGC;
/** Profiling the total time from GC to Qemu. */
STAMPROFILEADV StatTotalGCToQemu;
/** Profiling the total time spent in GC. */
STAMPROFILEADV StatTotalInGC;
/** Profiling the total time spent not in Qemu. */
STAMPROFILEADV StatTotalInQemu;
/** Profiling the VMMSwitcher code for going to GC. */
STAMPROFILEADV StatSwitcherToGC;
/** Profiling the VMMSwitcher code for going to HC. */
STAMPROFILEADV StatSwitcherToHC;
STAMPROFILEADV StatSwitcherSaveRegs;
STAMPROFILEADV StatSwitcherSysEnter;
STAMPROFILEADV StatSwitcherDebug;
STAMPROFILEADV StatSwitcherCR0;
STAMPROFILEADV StatSwitcherCR4;
STAMPROFILEADV StatSwitcherJmpCR3;
STAMPROFILEADV StatSwitcherRstrRegs;
STAMPROFILEADV StatSwitcherLgdt;
STAMPROFILEADV StatSwitcherLidt;
STAMPROFILEADV StatSwitcherLldt;
STAMPROFILEADV StatSwitcherTSS;
/* padding - the unions must be aligned on 32 bytes boundraries. */
uint32_t padding[HC_ARCH_BITS == 32 ? 6 : 6];
/** CPUM part. */
union
{
#ifdef ___CPUMInternal_h
struct CPUM s;
#endif
#ifdef VBOX_WITH_HYBIRD_32BIT_KERNEL
char padding[3584]; /* multiple of 32 */
#else
char padding[HC_ARCH_BITS == 32 ? 3424 : 3552]; /* multiple of 32 */
#endif
} cpum;
/** VMM part. */
union
{
#ifdef ___VMMInternal_h
struct VMM s;
#endif
char padding[1024]; /* multiple of 32 */
} vmm;
/** PGM part. */
union
{
#ifdef ___PGMInternal_h
struct PGM s;
#endif
char padding[50*1024]; /* multiple of 32 */
} pgm;
/** HWACCM part. */
union
{
#ifdef ___HWACCMInternal_h
struct HWACCM s;
#endif
char padding[1024]; /* multiple of 32 */
} hwaccm;
/** TRPM part. */
union
{
#ifdef ___TRPMInternal_h
struct TRPM s;
#endif
char padding[5344]; /* multiple of 32 */
} trpm;
/** SELM part. */
union
{
#ifdef ___SELMInternal_h
struct SELM s;
#endif
char padding[544]; /* multiple of 32 */
} selm;
/** MM part. */
union
{
#ifdef ___MMInternal_h
struct MM s;
#endif
char padding[128]; /* multiple of 32 */
} mm;
/** CFGM part. */
union
{
#ifdef ___CFGMInternal_h
struct CFGM s;
#endif
char padding[32]; /* multiple of 32 */
} cfgm;
/** PDM part. */
union
{
#ifdef ___PDMInternal_h
struct PDM s;
#endif
char padding[1024]; /* multiple of 32 */
} pdm;
/** IOM part. */
union
{
#ifdef ___IOMInternal_h
struct IOM s;
#endif
char padding[4544]; /* multiple of 32 */
} iom;
/** PATM part. */
union
{
#ifdef ___PATMInternal_h
struct PATM s;
#endif
char padding[768]; /* multiple of 32 */
} patm;
/** CSAM part. */
union
{
#ifdef ___CSAMInternal_h
struct CSAM s;
#endif
char padding[3328]; /* multiple of 32 */
} csam;
/** EM part. */
union
{
#ifdef ___EMInternal_h
struct EM s;
#endif
char padding[1344]; /* multiple of 32 */
} em;
/** TM part. */
union
{
#ifdef ___TMInternal_h
struct TM s;
#endif
char padding[1280]; /* multiple of 32 */
} tm;
/** DBGF part. */
union
{
#ifdef ___DBGFInternal_h
struct DBGF s;
#endif
char padding[HC_ARCH_BITS == 32 ? 1888 : 1920]; /* multiple of 32 */
} dbgf;
/** STAM part. */
union
{
#ifdef ___STAMInternal_h
struct STAM s;
#endif
char padding[32]; /* multiple of 32 */
} stam;
/** SSM part. */
union
{
#ifdef ___SSMInternal_h
struct SSM s;
#endif
char padding[32]; /* multiple of 32 */
} ssm;
/** VM part. */
union
{
#ifdef ___VMInternal_h
struct VMINT s;
#endif
char padding[768]; /* multiple of 32 */
} vm;
/** REM part. */
union
{
#ifdef ___REMInternal_h
struct REM s;
#endif
char padding[HC_ARCH_BITS == 32 ? 0x6b00 : 0xbf00]; /* multiple of 32 */
} rem;
} VM;
/** Pointer to a VM. */
#ifndef ___VBox_types_h
typedef struct VM *PVM;
#endif
#ifdef IN_GC
__BEGIN_DECLS
/** The VM structure.
* This is imported from the VMMGCBuiltin module, i.e. it's a one
* of those magic globals which we should avoid using.
*/
extern DECLIMPORT(VM) g_VM;
__END_DECLS
#endif
/** @} */
#endif