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/* $Id: VMMSwitcher.h $ */
/** @file
* VMM - World Switchers.
*/
/*
* Copyright (C) 2006-2019 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.
*/
#ifndef VMM_INCLUDED_SRC_include_VMMSwitcher_h
#define VMM_INCLUDED_SRC_include_VMMSwitcher_h
#ifndef RT_WITHOUT_PRAGMA_ONCE
# pragma once
#endif
#include <VBox/vmm/vmm.h>
/** @name Fixup Types.
* @{
*/
/** @todo document what arguments these take and what they do. */
#define FIX_HC_2_GC_NEAR_REL 1
#define FIX_HC_2_ID_NEAR_REL 2
#define FIX_GC_2_HC_NEAR_REL 3
#define FIX_GC_2_ID_NEAR_REL 4
#define FIX_ID_2_HC_NEAR_REL 5
#define FIX_ID_2_GC_NEAR_REL 6
#define FIX_GC_FAR32 7
#define FIX_GC_CPUM_OFF 8
#define FIX_GC_VM_OFF 9 /** @todo cleanup fixup names GC->RC, HC->R0. */
#define FIX_HC_CPUM_OFF 10
#define FIX_HC_VM_OFF 11
#define FIX_INTER_32BIT_CR3 12
#define FIX_INTER_PAE_CR3 13
#define FIX_INTER_AMD64_CR3 14
#define FIX_HYPER_CS 18
#define FIX_HYPER_DS 19
#define FIX_HYPER_TSS 20
#define FIX_GC_TSS_GDTE_DW2 21
/*#define FIX_NO_FXSAVE_JMP 24 - reusable */
#define FIX_NO_SYSENTER_JMP 25
#define FIX_NO_SYSCALL_JMP 26
#define FIX_HC_32BIT 27
#define FIX_HC_64BIT 28
#define FIX_HC_64BIT_CPUM 29
#define FIX_HC_64BIT_CS 30
#define FIX_ID_32BIT 31
#define FIX_ID_64BIT 32
#define FIX_ID_FAR32_TO_64BIT_MODE 33
#define FIX_GC_APIC_BASE_32BIT 34
#define FIX_HC_64BIT_NOCHECK 35
#define FIX_GC_64_BIT_CPUM_OFF 36
#define FIX_GC_CPUMCPU_OFF 37
#define FIX_EFER_OR_MASK 38
#define FIX_THE_END 255
/** @} */
/** Pointer to a switcher definition. */
typedef struct VMMSWITCHERDEF *PVMMSWITCHERDEF;
/**
* Callback function for relocating the core code belonging to a switcher.
*
* @param pVM The cross context VM structure.
* @param pSwitcher Pointer to the switcher structure.
* @param R0PtrCode Pointer to the first code byte in the ring-0 mapping.
* @param pu8CodeR3 Pointer to the first code byte in the ring-3 mapping.
* @param GCPtrCode The GC address of the first code byte.
* @param u32IDCode The address of the identity mapped code (first byte).
*/
typedef DECLCALLBACK(void) FNVMMSWITCHERRELOCATE(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3,
RTGCPTR GCPtrCode, uint32_t u32IDCode);
/** Pointer to a FNVMMSWITCHERRELOCATE(). */
typedef FNVMMSWITCHERRELOCATE *PFNVMMSWITCHERRELOCATE;
/**
* VMM Switcher structure.
*/
#pragma pack(1)
typedef struct VMMSWITCHERDEF
{
/** Pointer to the code. */
void *pvCode;
/** Pointer to the fixup records. */
void *pvFixups;
/** Pointer to the description. */
const char *pszDesc;
/** Function which performs the necessary relocations. */
PFNVMMSWITCHERRELOCATE pfnRelocate;
/** The switcher type. */
VMMSWITCHER enmType;
/** Size of the entire code chunk. */
uint32_t cbCode;
/** vmmR0ToRawMode C entrypoint. */
uint32_t offR0ToRawMode;
/** vmmRCToHost C entrypoint. */
uint32_t offRCToHost;
/** vmmRCCallTrampoline address. */
uint32_t offRCCallTrampoline;
/** vmmRCToHostAsm - Assembly language entry point for switching from raw-mode
* context to host-context. This saves the RC register context. */
uint32_t offRCToHostAsm;
/** vmmRCToHostNoReturn - Assembly language entry point for switching from
* raw-mode context to host-context. This does not save any RC register
* context and expects the caller to have done that already. */
uint32_t offRCToHostAsmNoReturn;
/** @name Disassembly Regions.
* @{ */
uint32_t offHCCode0;
uint32_t cbHCCode0;
uint32_t offHCCode1;
uint32_t cbHCCode1;
uint32_t offIDCode0;
uint32_t cbIDCode0;
uint32_t offIDCode1;
uint32_t cbIDCode1;
uint32_t offGCCode;
uint32_t cbGCCode;
/** @} */
} VMMSWITCHERDEF;
#pragma pack()
RT_C_DECLS_BEGIN
extern VMMSWITCHERDEF vmmR3SwitcherX86Stub_Def;
extern VMMSWITCHERDEF vmmR3Switcher32BitTo32Bit_Def;
extern VMMSWITCHERDEF vmmR3Switcher32BitToPAE_Def;
extern VMMSWITCHERDEF vmmR3Switcher32BitToAMD64_Def;
extern VMMSWITCHERDEF vmmR3SwitcherPAETo32Bit_Def;
extern VMMSWITCHERDEF vmmR3SwitcherPAEToPAE_Def;
extern VMMSWITCHERDEF vmmR3SwitcherPAEToAMD64_Def;
extern VMMSWITCHERDEF vmmR3SwitcherAMD64Stub_Def;
extern VMMSWITCHERDEF vmmR3SwitcherAMD64To32Bit_Def;
extern VMMSWITCHERDEF vmmR3SwitcherAMD64ToPAE_Def;
extern VMMSWITCHERDEF vmmR3SwitcherAMD64ToAMD64_Def;
extern DECLCALLBACK(void) vmmR3Switcher32BitTo32Bit_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3Switcher32BitToPAE_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3Switcher32BitToAMD64_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3SwitcherPAETo32Bit_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3SwitcherPAEToPAE_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3SwitcherPAEToAMD64_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3SwitcherAMD64To32Bit_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3SwitcherAMD64ToPAE_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
extern DECLCALLBACK(void) vmmR3SwitcherAMD64ToAMD64_Relocate(PVM pVM, PVMMSWITCHERDEF pSwitcher, RTR0PTR R0PtrCode, uint8_t *pu8CodeR3, RTGCPTR GCPtrCode, uint32_t u32IdCode);
RT_C_DECLS_END
#endif /* !VMM_INCLUDED_SRC_include_VMMSwitcher_h */
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