/////////////////////////////////////////////////////////////////////////
// $Id: vmx.h 14086 2021-01-30 08:35:35Z sshwarts $
/////////////////////////////////////////////////////////////////////////
//
//   Copyright (c) 2009-2019 Stanislav Shwartsman
//          Written by Stanislav Shwartsman [sshwarts at sourceforge net]
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
//  Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public
//  License along with this library; if not, write to the Free Software
//  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA B 02110-1301 USA
//
/////////////////////////////////////////////////////////////////////////

#ifndef _BX_VMX_INTEL_H_
#define _BX_VMX_INTEL_H_

#define VMX_VMCS_AREA_SIZE   4096

// VMCS pointer is always 64-bit variable
const Bit64u BX_INVALID_VMCSPTR = BX_CONST64(0xFFFFFFFFFFFFFFFF);

// bits supported in IA32_FEATURE_CONTROL MSR
const Bit32u BX_IA32_FEATURE_CONTROL_LOCK_BIT = 0x1;
const Bit32u BX_IA32_FEATURE_CONTROL_VMX_ENABLE_BIT = 0x4;

const Bit32u BX_IA32_FEATURE_CONTROL_BITS = (BX_IA32_FEATURE_CONTROL_LOCK_BIT | BX_IA32_FEATURE_CONTROL_VMX_ENABLE_BIT);

// VMX error codes
enum VMX_error_code {
    VMXERR_NO_ERROR = 0,
    VMXERR_VMCALL_IN_VMX_ROOT_OPERATION = 1,
    VMXERR_VMCLEAR_WITH_INVALID_ADDR = 2,
    VMXERR_VMCLEAR_WITH_VMXON_VMCS_PTR = 3,
    VMXERR_VMLAUNCH_NON_CLEAR_VMCS = 4,
    VMXERR_VMRESUME_NON_LAUNCHED_VMCS = 5,
    VMXERR_VMRESUME_VMCS_CORRUPTED = 6,
    VMXERR_VMENTRY_INVALID_VM_CONTROL_FIELD = 7,
    VMXERR_VMENTRY_INVALID_VM_HOST_STATE_FIELD = 8,
    VMXERR_VMPTRLD_INVALID_PHYSICAL_ADDRESS = 9,
    VMXERR_VMPTRLD_WITH_VMXON_PTR = 10,
    VMXERR_VMPTRLD_INCORRECT_VMCS_REVISION_ID = 11,
    VMXERR_UNSUPPORTED_VMCS_COMPONENT_ACCESS = 12,
    VMXERR_VMWRITE_READ_ONLY_VMCS_COMPONENT = 13,
    VMXERR_RESERVED14 = 14,
    VMXERR_VMXON_IN_VMX_ROOT_OPERATION = 15,
    VMXERR_VMENTRY_INVALID_EXECUTIVE_VMCS = 16,
    VMXERR_VMENTRY_NON_LAUNCHED_EXECUTIVE_VMCS = 17,
    VMXERR_VMENTRY_NOT_VMXON_EXECUTIVE_VMCS = 18,
    VMXERR_VMCALL_NON_CLEAR_VMCS = 19,
    VMXERR_VMCALL_INVALID_VMEXIT_FIELD = 20,
    VMXERR_RESERVED21 = 21,
    VMXERR_VMCALL_INVALID_MSEG_REVISION_ID = 22,
    VMXERR_VMXOFF_WITH_CONFIGURED_SMM_MONITOR = 23,
    VMXERR_VMCALL_WITH_INVALID_SMM_MONITOR_FEATURES = 24,
    VMXERR_VMENTRY_INVALID_VM_CONTROL_FIELD_IN_EXECUTIVE_VMCS = 25,
    VMXERR_VMENTRY_MOV_SS_BLOCKING = 26,
    VMXERR_RESERVED27 = 27,
    VMXERR_INVALID_INVEPT_INVVPID = 28
};

enum VMX_vmexit_reason {
   VMX_VMEXIT_EXCEPTION_NMI = 0,
   VMX_VMEXIT_EXTERNAL_INTERRUPT = 1,
   VMX_VMEXIT_TRIPLE_FAULT = 2,
   VMX_VMEXIT_INIT = 3,
   VMX_VMEXIT_SIPI = 4,
   VMX_VMEXIT_IO_SMI = 5,
   VMX_VMEXIT_SMI = 6,
   VMX_VMEXIT_INTERRUPT_WINDOW = 7,
   VMX_VMEXIT_NMI_WINDOW = 8,
   VMX_VMEXIT_TASK_SWITCH = 9,
   VMX_VMEXIT_CPUID = 10,
   VMX_VMEXIT_GETSEC = 11,
   VMX_VMEXIT_HLT = 12,
   VMX_VMEXIT_INVD = 13,
   VMX_VMEXIT_INVLPG = 14,
   VMX_VMEXIT_RDPMC = 15,
   VMX_VMEXIT_RDTSC = 16,
   VMX_VMEXIT_RSM = 17,
   VMX_VMEXIT_VMCALL = 18,
   VMX_VMEXIT_VMCLEAR = 19,
   VMX_VMEXIT_VMLAUNCH = 20,
   VMX_VMEXIT_VMPTRLD = 21,
   VMX_VMEXIT_VMPTRST = 22,
   VMX_VMEXIT_VMREAD = 23,
   VMX_VMEXIT_VMRESUME = 24,
   VMX_VMEXIT_VMWRITE = 25,
   VMX_VMEXIT_VMXOFF = 26,
   VMX_VMEXIT_VMXON = 27,
   VMX_VMEXIT_CR_ACCESS = 28,
   VMX_VMEXIT_DR_ACCESS = 29,
   VMX_VMEXIT_IO_INSTRUCTION = 30,
   VMX_VMEXIT_RDMSR = 31,
   VMX_VMEXIT_WRMSR = 32,
   VMX_VMEXIT_VMENTRY_FAILURE_GUEST_STATE = 33,
   VMX_VMEXIT_VMENTRY_FAILURE_MSR = 34,
   VMX_VMEXIT_RESERVED35 = 35,
   VMX_VMEXIT_MWAIT = 36,
   VMX_VMEXIT_MONITOR_TRAP_FLAG = 37,
   VMX_VMEXIT_RESERVED38 = 38,
   VMX_VMEXIT_MONITOR = 39,
   VMX_VMEXIT_PAUSE = 40,
   VMX_VMEXIT_VMENTRY_FAILURE_MCA = 41, // will never happen in Bochs
   VMX_VMEXIT_RESERVED42 = 42,
   VMX_VMEXIT_TPR_THRESHOLD = 43,
   VMX_VMEXIT_APIC_ACCESS = 44,
   VMX_VMEXIT_VIRTUALIZED_EOI = 45,
   VMX_VMEXIT_GDTR_IDTR_ACCESS = 46,
   VMX_VMEXIT_LDTR_TR_ACCESS = 47,
   VMX_VMEXIT_EPT_VIOLATION = 48,
   VMX_VMEXIT_EPT_MISCONFIGURATION = 49,
   VMX_VMEXIT_INVEPT = 50,
   VMX_VMEXIT_RDTSCP = 51,
   VMX_VMEXIT_VMX_PREEMPTION_TIMER_EXPIRED = 52,
   VMX_VMEXIT_INVVPID = 53,
   VMX_VMEXIT_WBINVD = 54,
   VMX_VMEXIT_XSETBV = 55,
   VMX_VMEXIT_APIC_WRITE = 56,
   VMX_VMEXIT_RDRAND = 57,
   VMX_VMEXIT_INVPCID = 58,
   VMX_VMEXIT_VMFUNC = 59,
   VMX_VMEXIT_ENCLS = 60,
   VMX_VMEXIT_RDSEED = 61,
   VMX_VMEXIT_PML_LOGFULL = 62,
   VMX_VMEXIT_XSAVES = 63,
   VMX_VMEXIT_XRSTORS = 64,
   VMX_VMEXIT_RESERVED65 = 65,
   VMX_VMEXIT_SPP = 66,
   VMX_VMEXIT_UMWAIT = 67,
   VMX_VMEXIT_TPAUSE = 68,
   VMX_VMEXIT_RESERVED69 = 69,
   VMX_VMEXIT_RESERVED70 = 70,
   VMX_VMEXIT_RESERVED71 = 71,
   VMX_VMEXIT_ENQCMD_PASID = 72,
   VMX_VMEXIT_ENQCMDS_PASID = 73,
   VMX_VMEXIT_LAST_REASON
};

#define IS_TRAP_LIKE_VMEXIT(reason) \
      (reason == VMX_VMEXIT_TPR_THRESHOLD || \
       reason == VMX_VMEXIT_VIRTUALIZED_EOI || \
       reason == VMX_VMEXIT_APIC_WRITE)

// VMexit on CR register access
enum {
   VMX_VMEXIT_CR_ACCESS_CR_WRITE = 0,
   VMX_VMEXIT_CR_ACCESS_CR_READ,
   VMX_VMEXIT_CR_ACCESS_CLTS,
   VMX_VMEXIT_CR_ACCESS_LMSW
};

// VMENTRY error on loading guest state qualification
enum VMX_vmentry_error {
   VMENTER_ERR_NO_ERROR = 0,
   VMENTER_ERR_GUEST_STATE_PDPTR_LOADING = 2,
   VMENTER_ERR_GUEST_STATE_INJECT_NMI_BLOCKING_EVENTS = 3,
   VMENTER_ERR_GUEST_STATE_LINK_POINTER = 4
};

// VMABORT error code
enum VMX_vmabort_code {
   VMABORT_SAVING_GUEST_MSRS_FAILURE,
   VMABORT_HOST_PDPTR_CORRUPTED,
   VMABORT_VMEXIT_VMCS_CORRUPTED,
   VMABORT_LOADING_HOST_MSRS,
   VMABORT_VMEXIT_MACHINE_CHECK_ERROR
};

// VMX APIC ACCESS VMEXIT qualification
const Bit32u VMX_APIC_READ_INSTRUCTION_EXECUTION   = 0x0000;
const Bit32u VMX_APIC_WRITE_INSTRUCTION_EXECUTION  = 0x1000;
const Bit32u VMX_APIC_INSTRUCTION_FETCH            = 0x2000; /* won't happen because cpu::prefetch will crash */
const Bit32u VMX_APIC_ACCESS_DURING_EVENT_DELIVERY = 0x3000;

// VM Functions List
enum VMFunctions {
   VMX_VMFUNC_EPTP_SWITCHING = 0
};

const Bit64u VMX_VMFUNC_EPTP_SWITCHING_MASK = (BX_CONST64(1) << VMX_VMFUNC_EPTP_SWITCHING);

// =============
//  VMCS fields
// =============

/* VMCS 16-bit control fields */
/* binary 0000_00xx_xxxx_xxx0 */
#define VMCS_16BIT_CONTROL_VPID                            0x00000000 /* VPID */
#define VMCS_16BIT_CONTROL_POSTED_INTERRUPT_VECTOR         0x00000002 /* Posted Interrupts - not implememted yet */
#define VMCS_16BIT_CONTROL_EPTP_INDEX                      0x00000004 /* #VE Exception */

/* VMCS 16-bit guest-state fields */
/* binary 0000_10xx_xxxx_xxx0 */
#define VMCS_16BIT_GUEST_ES_SELECTOR                       0x00000800
#define VMCS_16BIT_GUEST_CS_SELECTOR                       0x00000802
#define VMCS_16BIT_GUEST_SS_SELECTOR                       0x00000804
#define VMCS_16BIT_GUEST_DS_SELECTOR                       0x00000806
#define VMCS_16BIT_GUEST_FS_SELECTOR                       0x00000808
#define VMCS_16BIT_GUEST_GS_SELECTOR                       0x0000080A
#define VMCS_16BIT_GUEST_LDTR_SELECTOR                     0x0000080C
#define VMCS_16BIT_GUEST_TR_SELECTOR                       0x0000080E
#define VMCS_16BIT_GUEST_INTERRUPT_STATUS                  0x00000810 /* Virtual Interrupt Delivery */
#define VMCS_16BIT_GUEST_PML_INDEX                         0x00000812 /* Page Modification Logging */

/* VMCS 16-bit host-state fields */
/* binary 0000_11xx_xxxx_xxx0 */
#define VMCS_16BIT_HOST_ES_SELECTOR                        0x00000C00
#define VMCS_16BIT_HOST_CS_SELECTOR                        0x00000C02
#define VMCS_16BIT_HOST_SS_SELECTOR                        0x00000C04
#define VMCS_16BIT_HOST_DS_SELECTOR                        0x00000C06
#define VMCS_16BIT_HOST_FS_SELECTOR                        0x00000C08
#define VMCS_16BIT_HOST_GS_SELECTOR                        0x00000C0A
#define VMCS_16BIT_HOST_TR_SELECTOR                        0x00000C0C

/* VMCS 64-bit control fields */
/* binary 0010_00xx_xxxx_xxx0 */
#define VMCS_64BIT_CONTROL_IO_BITMAP_A                     0x00002000
#define VMCS_64BIT_CONTROL_IO_BITMAP_A_HI                  0x00002001
#define VMCS_64BIT_CONTROL_IO_BITMAP_B                     0x00002002
#define VMCS_64BIT_CONTROL_IO_BITMAP_B_HI                  0x00002003
#define VMCS_64BIT_CONTROL_MSR_BITMAPS                     0x00002004
#define VMCS_64BIT_CONTROL_MSR_BITMAPS_HI                  0x00002005
#define VMCS_64BIT_CONTROL_VMEXIT_MSR_STORE_ADDR           0x00002006
#define VMCS_64BIT_CONTROL_VMEXIT_MSR_STORE_ADDR_HI        0x00002007
#define VMCS_64BIT_CONTROL_VMEXIT_MSR_LOAD_ADDR            0x00002008
#define VMCS_64BIT_CONTROL_VMEXIT_MSR_LOAD_ADDR_HI         0x00002009
#define VMCS_64BIT_CONTROL_VMENTRY_MSR_LOAD_ADDR           0x0000200A
#define VMCS_64BIT_CONTROL_VMENTRY_MSR_LOAD_ADDR_HI        0x0000200B
#define VMCS_64BIT_CONTROL_EXECUTIVE_VMCS_PTR              0x0000200C
#define VMCS_64BIT_CONTROL_EXECUTIVE_VMCS_PTR_HI           0x0000200D
#define VMCS_64BIT_CONTROL_PML_ADDRESS                     0x0000200E /* Page Modification Logging */
#define VMCS_64BIT_CONTROL_PML_ADDRESS_HI                  0x0000200F
#define VMCS_64BIT_CONTROL_TSC_OFFSET                      0x00002010
#define VMCS_64BIT_CONTROL_TSC_OFFSET_HI                   0x00002011
#define VMCS_64BIT_CONTROL_VIRTUAL_APIC_PAGE_ADDR          0x00002012 /* TPR shadow */
#define VMCS_64BIT_CONTROL_VIRTUAL_APIC_PAGE_ADDR_HI       0x00002013
#define VMCS_64BIT_CONTROL_APIC_ACCESS_ADDR                0x00002014 /* APIC virtualization */
#define VMCS_64BIT_CONTROL_APIC_ACCESS_ADDR_HI             0x00002015
#define VMCS_64BIT_CONTROL_POSTED_INTERRUPT_DESC_ADDR      0x00002016 /* Posted Interrupts - not implemented yet */
#define VMCS_64BIT_CONTROL_POSTED_INTERRUPT_DESC_ADDR_HI   0x00002017
#define VMCS_64BIT_CONTROL_VMFUNC_CTRLS                    0x00002018 /* VM Functions */
#define VMCS_64BIT_CONTROL_VMFUNC_CTRLS_HI                 0x00002019
#define VMCS_64BIT_CONTROL_EPTPTR                          0x0000201A /* EPT */
#define VMCS_64BIT_CONTROL_EPTPTR_HI                       0x0000201B
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP0                0x0000201C /* Virtual Interrupt Delivery */
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP0_HI             0x0000201D
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP1                0x0000201E
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP1_HI             0x0000201F
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP2                0x00002020
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP2_HI             0x00002021
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP3                0x00002022
#define VMCS_64BIT_CONTROL_EOI_EXIT_BITMAP3_HI             0x00002023
#define VMCS_64BIT_CONTROL_EPTP_LIST_ADDRESS               0x00002024 /* VM Functions - EPTP switching */
#define VMCS_64BIT_CONTROL_EPTP_LIST_ADDRESS_HI            0x00002025
#define VMCS_64BIT_CONTROL_VMREAD_BITMAP_ADDR              0x00002026 /* VMCS Shadowing */
#define VMCS_64BIT_CONTROL_VMREAD_BITMAP_ADDR_HI           0x00002027
#define VMCS_64BIT_CONTROL_VMWRITE_BITMAP_ADDR             0x00002028 /* VMCS Shadowing */
#define VMCS_64BIT_CONTROL_VMWRITE_BITMAP_ADDR_HI          0x00002029
#define VMCS_64BIT_CONTROL_VE_EXCEPTION_INFO_ADDR          0x0000202A /* #VE Exception */
#define VMCS_64BIT_CONTROL_VE_EXCEPTION_INFO_ADDR_HI       0x0000202B
#define VMCS_64BIT_CONTROL_XSS_EXITING_BITMAP              0x0000202C /* XSAVES */
#define VMCS_64BIT_CONTROL_XSS_EXITING_BITMAP_HI           0x0000202D
#define VMCS_64BIT_CONTROL_ENCLS_EXITING_BITMAP            0x0000202E /* ENCLS/SGX */
#define VMCS_64BIT_CONTROL_ENCLS_EXITING_BITMAP_HI         0x0000202F
#define VMCS_64BIT_CONTROL_SPPTP                           0x00002030 /* Sup-Page Write Protection */
#define VMCS_64BIT_CONTROL_SPPTP_HI                        0x00002031
#define VMCS_64BIT_CONTROL_TSC_MULTIPLIER                  0x00002032 /* TSC Scaling */
#define VMCS_64BIT_CONTROL_TSC_MULTIPLIER_HI               0x00002033

/* VMCS 64-bit read only data fields */
/* binary 0010_01xx_xxxx_xxx0 */
#define VMCS_64BIT_GUEST_PHYSICAL_ADDR                     0x00002400 /* EPT */
#define VMCS_64BIT_GUEST_PHYSICAL_ADDR_HI                  0x00002401

/* VMCS 64-bit guest state fields */
/* binary 0010_10xx_xxxx_xxx0 */
#define VMCS_64BIT_GUEST_LINK_POINTER                      0x00002800
#define VMCS_64BIT_GUEST_LINK_POINTER_HI                   0x00002801
#define VMCS_64BIT_GUEST_IA32_DEBUGCTL                     0x00002802
#define VMCS_64BIT_GUEST_IA32_DEBUGCTL_HI                  0x00002803
#define VMCS_64BIT_GUEST_IA32_PAT                          0x00002804 /* PAT */
#define VMCS_64BIT_GUEST_IA32_PAT_HI                       0x00002805
#define VMCS_64BIT_GUEST_IA32_EFER                         0x00002806 /* EFER */
#define VMCS_64BIT_GUEST_IA32_EFER_HI                      0x00002807
#define VMCS_64BIT_GUEST_IA32_PERF_GLOBAL_CTRL             0x00002808 /* Perf Global Ctrl */
#define VMCS_64BIT_GUEST_IA32_PERF_GLOBAL_CTRL_HI          0x00002809
#define VMCS_64BIT_GUEST_IA32_PDPTE0                       0x0000280A /* EPT */
#define VMCS_64BIT_GUEST_IA32_PDPTE0_HI                    0x0000280B
#define VMCS_64BIT_GUEST_IA32_PDPTE1                       0x0000280C
#define VMCS_64BIT_GUEST_IA32_PDPTE1_HI                    0x0000280D
#define VMCS_64BIT_GUEST_IA32_PDPTE2                       0x0000280E
#define VMCS_64BIT_GUEST_IA32_PDPTE2_HI                    0x0000280F
#define VMCS_64BIT_GUEST_IA32_PDPTE3                       0x00002810
#define VMCS_64BIT_GUEST_IA32_PDPTE3_HI                    0x00002811
#define VMCS_64BIT_GUEST_IA32_BNDCFGS                      0x00002812 /* MPX (not implemented) */
#define VMCS_64BIT_GUEST_IA32_BNDCFGS_HI                   0x00002813
#define VMCS_64BIT_GUEST_IA32_RTIT_CTL                     0x00002814 /* Processor Trace (not implemented) */
#define VMCS_64BIT_GUEST_IA32_RTIT_CTL_HI                  0x00002815
#define VMCS_64BIT_GUEST_IA32_PKRS                         0x00002818 /* Supervisor-Mode Protection Keys */
#define VMCS_64BIT_GUEST_IA32_PKRS_HI                      0x00002819

/* VMCS 64-bit host state fields */
/* binary 0010_11xx_xxxx_xxx0 */
#define VMCS_64BIT_HOST_IA32_PAT                           0x00002C00 /* PAT */
#define VMCS_64BIT_HOST_IA32_PAT_HI                        0x00002C01
#define VMCS_64BIT_HOST_IA32_EFER                          0x00002C02 /* EFER */
#define VMCS_64BIT_HOST_IA32_EFER_HI                       0x00002C03
#define VMCS_64BIT_HOST_IA32_PERF_GLOBAL_CTRL              0x00002C04 /* Perf Global Ctrl */
#define VMCS_64BIT_HOST_IA32_PERF_GLOBAL_CTRL_HI           0x00002C05
#define VMCS_64BIT_HOST_IA32_PKRS                          0x00002C06 /* Supervisor-Mode Protection Keys */
#define VMCS_64BIT_HOST_IA32_PKRS_HI                       0x00002C07

/* VMCS 32_bit control fields */
/* binary 0100_00xx_xxxx_xxx0 */
#define VMCS_32BIT_CONTROL_PIN_BASED_EXEC_CONTROLS         0x00004000
#define VMCS_32BIT_CONTROL_PROCESSOR_BASED_VMEXEC_CONTROLS 0x00004002
#define VMCS_32BIT_CONTROL_EXECUTION_BITMAP                0x00004004
#define VMCS_32BIT_CONTROL_PAGE_FAULT_ERR_CODE_MASK        0x00004006
#define VMCS_32BIT_CONTROL_PAGE_FAULT_ERR_CODE_MATCH       0x00004008
#define VMCS_32BIT_CONTROL_CR3_TARGET_COUNT                0x0000400A
#define VMCS_32BIT_CONTROL_VMEXIT_CONTROLS                 0x0000400C
#define VMCS_32BIT_CONTROL_VMEXIT_MSR_STORE_COUNT          0x0000400E
#define VMCS_32BIT_CONTROL_VMEXIT_MSR_LOAD_COUNT           0x00004010
#define VMCS_32BIT_CONTROL_VMENTRY_CONTROLS                0x00004012
#define VMCS_32BIT_CONTROL_VMENTRY_MSR_LOAD_COUNT          0x00004014
#define VMCS_32BIT_CONTROL_VMENTRY_INTERRUPTION_INFO       0x00004016
#define VMCS_32BIT_CONTROL_VMENTRY_EXCEPTION_ERR_CODE      0x00004018
#define VMCS_32BIT_CONTROL_VMENTRY_INSTRUCTION_LENGTH      0x0000401A
#define VMCS_32BIT_CONTROL_TPR_THRESHOLD                   0x0000401C /* TPR shadow */
#define VMCS_32BIT_CONTROL_SECONDARY_VMEXEC_CONTROLS       0x0000401E
#define VMCS_32BIT_CONTROL_PAUSE_LOOP_EXITING_GAP          0x00004020 /* PAUSE loop exiting */
#define VMCS_32BIT_CONTROL_PAUSE_LOOP_EXITING_WINDOW       0x00004022 /* PAUSE loop exiting */

/* VMCS 32-bit read only data fields */
/* binary 0100_01xx_xxxx_xxx0 */
#define VMCS_32BIT_INSTRUCTION_ERROR                       0x00004400
#define VMCS_32BIT_VMEXIT_REASON                           0x00004402
#define VMCS_32BIT_VMEXIT_INTERRUPTION_INFO                0x00004404
#define VMCS_32BIT_VMEXIT_INTERRUPTION_ERR_CODE            0x00004406
#define VMCS_32BIT_IDT_VECTORING_INFO                      0x00004408
#define VMCS_32BIT_IDT_VECTORING_ERR_CODE                  0x0000440A
#define VMCS_32BIT_VMEXIT_INSTRUCTION_LENGTH               0x0000440C
#define VMCS_32BIT_VMEXIT_INSTRUCTION_INFO                 0x0000440E

/* VMCS 32-bit guest-state fields */
/* binary 0100_10xx_xxxx_xxx0 */
#define VMCS_32BIT_GUEST_ES_LIMIT                          0x00004800
#define VMCS_32BIT_GUEST_CS_LIMIT                          0x00004802
#define VMCS_32BIT_GUEST_SS_LIMIT                          0x00004804
#define VMCS_32BIT_GUEST_DS_LIMIT                          0x00004806
#define VMCS_32BIT_GUEST_FS_LIMIT                          0x00004808
#define VMCS_32BIT_GUEST_GS_LIMIT                          0x0000480A
#define VMCS_32BIT_GUEST_LDTR_LIMIT                        0x0000480C
#define VMCS_32BIT_GUEST_TR_LIMIT                          0x0000480E
#define VMCS_32BIT_GUEST_GDTR_LIMIT                        0x00004810
#define VMCS_32BIT_GUEST_IDTR_LIMIT                        0x00004812
#define VMCS_32BIT_GUEST_ES_ACCESS_RIGHTS                  0x00004814
#define VMCS_32BIT_GUEST_CS_ACCESS_RIGHTS                  0x00004816
#define VMCS_32BIT_GUEST_SS_ACCESS_RIGHTS                  0x00004818
#define VMCS_32BIT_GUEST_DS_ACCESS_RIGHTS                  0x0000481A
#define VMCS_32BIT_GUEST_FS_ACCESS_RIGHTS                  0x0000481C
#define VMCS_32BIT_GUEST_GS_ACCESS_RIGHTS                  0x0000481E
#define VMCS_32BIT_GUEST_LDTR_ACCESS_RIGHTS                0x00004820
#define VMCS_32BIT_GUEST_TR_ACCESS_RIGHTS                  0x00004822
#define VMCS_32BIT_GUEST_INTERRUPTIBILITY_STATE            0x00004824
#define VMCS_32BIT_GUEST_ACTIVITY_STATE                    0x00004826
#define VMCS_32BIT_GUEST_SMBASE                            0x00004828
#define VMCS_32BIT_GUEST_IA32_SYSENTER_CS_MSR              0x0000482A
#define VMCS_32BIT_GUEST_PREEMPTION_TIMER_VALUE            0x0000482E /* VMX preemption timer */

/* VMCS 32-bit host-state fields */
/* binary 0100_11xx_xxxx_xxx0 */
#define VMCS_32BIT_HOST_IA32_SYSENTER_CS_MSR               0x00004C00

/* VMCS natural width control fields */
/* binary 0110_00xx_xxxx_xxx0 */
#define VMCS_CONTROL_CR0_GUEST_HOST_MASK                   0x00006000
#define VMCS_CONTROL_CR4_GUEST_HOST_MASK                   0x00006002
#define VMCS_CONTROL_CR0_READ_SHADOW                       0x00006004
#define VMCS_CONTROL_CR4_READ_SHADOW                       0x00006006
#define VMCS_CR3_TARGET0                                   0x00006008
#define VMCS_CR3_TARGET1                                   0x0000600A
#define VMCS_CR3_TARGET2                                   0x0000600C
#define VMCS_CR3_TARGET3                                   0x0000600E
                                                           
/* VMCS natural width read only data fields */
/* binary 0110_01xx_xxxx_xxx0 */
#define VMCS_VMEXIT_QUALIFICATION                          0x00006400
#define VMCS_IO_RCX                                        0x00006402
#define VMCS_IO_RSI                                        0x00006404
#define VMCS_IO_RDI                                        0x00006406
#define VMCS_IO_RIP                                        0x00006408
#define VMCS_GUEST_LINEAR_ADDR                             0x0000640A

/* VMCS natural width guest state fields */
/* binary 0110_10xx_xxxx_xxx0 */
#define VMCS_GUEST_CR0                                     0x00006800
#define VMCS_GUEST_CR3                                     0x00006802
#define VMCS_GUEST_CR4                                     0x00006804
#define VMCS_GUEST_ES_BASE                                 0x00006806
#define VMCS_GUEST_CS_BASE                                 0x00006808
#define VMCS_GUEST_SS_BASE                                 0x0000680A
#define VMCS_GUEST_DS_BASE                                 0x0000680C
#define VMCS_GUEST_FS_BASE                                 0x0000680E
#define VMCS_GUEST_GS_BASE                                 0x00006810
#define VMCS_GUEST_LDTR_BASE                               0x00006812
#define VMCS_GUEST_TR_BASE                                 0x00006814
#define VMCS_GUEST_GDTR_BASE                               0x00006816
#define VMCS_GUEST_IDTR_BASE                               0x00006818
#define VMCS_GUEST_DR7                                     0x0000681A
#define VMCS_GUEST_RSP                                     0x0000681C
#define VMCS_GUEST_RIP                                     0x0000681E
#define VMCS_GUEST_RFLAGS                                  0x00006820
#define VMCS_GUEST_PENDING_DBG_EXCEPTIONS                  0x00006822
#define VMCS_GUEST_IA32_SYSENTER_ESP_MSR                   0x00006824
#define VMCS_GUEST_IA32_SYSENTER_EIP_MSR                   0x00006826
#define VMCS_GUEST_IA32_S_CET                              0x00006828
#define VMCS_GUEST_SSP                                     0x0000682A
#define VMCS_GUEST_INTERRUPT_SSP_TABLE_ADDR                0x0000682C

/* VMCS natural width host state fields */
/* binary 0110_11xx_xxxx_xxx0 */
#define VMCS_HOST_CR0                                      0x00006C00
#define VMCS_HOST_CR3                                      0x00006C02
#define VMCS_HOST_CR4                                      0x00006C04
#define VMCS_HOST_FS_BASE                                  0x00006C06
#define VMCS_HOST_GS_BASE                                  0x00006C08
#define VMCS_HOST_TR_BASE                                  0x00006C0A
#define VMCS_HOST_GDTR_BASE                                0x00006C0C
#define VMCS_HOST_IDTR_BASE                                0x00006C0E
#define VMCS_HOST_IA32_SYSENTER_ESP_MSR                    0x00006C10
#define VMCS_HOST_IA32_SYSENTER_EIP_MSR                    0x00006C12
#define VMCS_HOST_RSP                                      0x00006C14
#define VMCS_HOST_RIP                                      0x00006C16
#define VMCS_HOST_IA32_S_CET                               0x00006C18
#define VMCS_HOST_SSP                                      0x00006C1A
#define VMCS_HOST_INTERRUPT_SSP_TABLE_ADDR                 0x00006C1C

#define VMX_HIGHEST_VMCS_ENCODING   (0x34)

// ===============================
//  VMCS fields encoding/decoding
// ===============================

// extract VMCS field using its encoding
#define VMCS_FIELD(encoding)        ((encoding) & 0x3ff)

// check if the VMCS field encoding corresponding to HI part of 64-bit value
#define IS_VMCS_FIELD_HI(encoding)  ((encoding) & 1)

// bits 11:10 of VMCS field encoding indicate field's type
#define VMCS_FIELD_TYPE(encoding)   (((encoding) >> 10) & 3)

enum {
  VMCS_FIELD_TYPE_CONTROL     = 0x0,
  VMCS_FIELD_TYPE_READ_ONLY   = 0x1,
  VMCS_FIELD_TYPE_GUEST_STATE = 0x2,
  VMCS_FIELD_TYPE_HOST_STATE  = 0x3
};

// bits 14:13 of VMCS field encoding indicate field's width
#define VMCS_FIELD_WIDTH(encoding)  (((encoding) >> 13) & 3)

enum {
  VMCS_FIELD_WIDTH_16BIT = 0x0,
  VMCS_FIELD_WIDTH_64BIT = 0x1,
  VMCS_FIELD_WIDTH_32BIT = 0x2,
  VMCS_FIELD_WIDTH_NATURAL_WIDTH = 0x3
};

#define VMCS_FIELD_INDEX(encoding) \
    ((VMCS_FIELD_WIDTH(encoding) << 2) + VMCS_FIELD_TYPE(encoding))

const Bit32u VMCS_ENCODING_RESERVED_BITS = 0xffff9000;

// =============
//  VMCS layout
// =============

#define BX_VMX_VMCS_REVISION_ID 0x2B /* better to be unique bochs VMCS revision id */

enum VMCS_Access_Rights_Format {
   VMCS_AR_ROTATE,
   VMCS_AR_PACK		// Intel Skylake packs AR into 16 bit form
};

#define VMCS_LAUNCH_STATE_FIELD_ENCODING         (0xfffffffe)
#define VMCS_VMX_ABORT_FIELD_ENCODING            (0xfffffffc)
#define VMCS_REVISION_ID_FIELD_ENCODING          (0xfffffffa)

class VMCS_Mapping {
private:
   Bit32u revision_id;

   unsigned vmcs_revision_id_field_offset;
   unsigned vmx_abort_field_offset;
   unsigned vmcs_launch_state_field_offset;

   VMCS_Access_Rights_Format ar_format; // in which form segment selectors Access Rights are stored in the VMCS

   // assume 16 VMCS field types (encoded with 4 bits: 2 bits for VMCS_FIELD_TYPE and 2 bits for VMCS_FIELD_WIDTH)
   unsigned vmcs_map[16][VMX_HIGHEST_VMCS_ENCODING];

   void init_generic_mapping();

public:
   VMCS_Mapping(Bit32u revision_id = BX_VMX_VMCS_REVISION_ID); // default VMCS mapping
   VMCS_Mapping(Bit32u revision_id, const char *filename);

   void clear();

   bool clear_mapping(Bit32u encoding);
   bool set_mapping(Bit32u encoding, Bit32u offset);

   void set_vmcs_revision_id(Bit32u revision) { revision_id = revision; }
   Bit32u get_vmcs_revision_id() const { return revision_id; }

   void set_access_rights_format(VMCS_Access_Rights_Format f) { ar_format = f; }
   VMCS_Access_Rights_Format get_access_rights_format() const { return ar_format; }

   void set_vmcs_recision_id_offset(unsigned offset) { vmcs_revision_id_field_offset = offset; }
   void set_vmx_abort_field_offset(unsigned offset) { vmx_abort_field_offset = offset; }
   void set_vmcs_launch_state_field_offset(unsigned offset) { vmcs_launch_state_field_offset = offset; }
   
   unsigned vmcs_field_offset(Bit32u encoding) const;

   bool is_reserved(Bit32u encoding) const {
     return (encoding & VMCS_ENCODING_RESERVED_BITS) != 0;
   }

   bool is_valid(Bit32u encoding) const {
     return ! is_reserved(encoding) && (vmcs_field_offset(encoding) != 0xffffffff);
   }
};

#define VMCS_DATA_OFFSET                         (0x0010)

#if ((VMCS_DATA_OFFSET + 4*(64*15 + VMX_HIGHEST_VMCS_ENCODING)) > VMX_VMCS_AREA_SIZE)
  #error "VMCS area size exceeded !"
#endif

// =============
//  VMCS state
// =============

enum VMX_state {
   VMCS_STATE_CLEAR = 0,
   VMCS_STATE_LAUNCHED
};

// ================
//  VMCS structure
// ================

typedef struct bx_VMCS_GUEST_STATE 
{
   bx_address cr0;
   bx_address cr3;
   bx_address cr4;
   bx_address dr7;

   bx_address rip;
   bx_address rsp;
   bx_address rflags;

   bx_segment_reg_t sregs[6];

   bx_global_segment_reg_t gdtr;
   bx_global_segment_reg_t idtr;
   bx_segment_reg_t        ldtr;
   bx_segment_reg_t        tr;

   Bit64u ia32_debugctl_msr;
   bx_address sysenter_esp_msr;
   bx_address sysenter_eip_msr;
   Bit32u sysenter_cs_msr;

   Bit32u smbase;
   Bit32u activity_state;
   Bit32u interruptibility_state;
   Bit32u tmpDR6;

#if BX_SUPPORT_VMX >= 2
#if BX_SUPPORT_X86_64
   Bit64u efer_msr;
#endif
   Bit64u pat_msr;
   Bit64u pdptr[4];
#endif

#if BX_SUPPORT_CET
   Bit64u msr_ia32_s_cet;
   bx_address ssp;
   bx_address interrupt_ssp_table_address;
#endif

#if BX_SUPPORT_PKEYS
   Bit32u pkrs;
#endif
} VMCS_GUEST_STATE;

typedef struct bx_VMCS_HOST_STATE
{
   bx_address cr0;
   bx_address cr3;
   bx_address cr4;

   Bit16u segreg_selector[6];

   bx_address fs_base;
   bx_address gs_base;

   bx_address gdtr_base;
   bx_address idtr_base;

   Bit32u tr_selector;
   bx_address tr_base;

   bx_address rsp;
   bx_address rip;

   bx_address sysenter_esp_msr;
   bx_address sysenter_eip_msr;
   Bit32u sysenter_cs_msr;

#if BX_SUPPORT_VMX >= 2
#if BX_SUPPORT_X86_64
   Bit64u efer_msr;
#endif
   Bit64u pat_msr;
#endif

#if BX_SUPPORT_CET
   Bit64u msr_ia32_s_cet;
   bx_address ssp;
   bx_address interrupt_ssp_table_address;
#endif

#if BX_SUPPORT_PKEYS
   Bit32u pkrs;
#endif
} VMCS_HOST_STATE;

typedef struct bx_VMX_Cap
{
  //
  // VMX Capabilities
  //

  Bit32u vmx_pin_vmexec_ctrl_supported_bits;
  Bit32u vmx_proc_vmexec_ctrl_supported_bits;
  Bit32u vmx_vmexec_ctrl2_supported_bits;
  Bit32u vmx_vmexit_ctrl_supported_bits;
  Bit32u vmx_vmentry_ctrl_supported_bits;
#if BX_SUPPORT_VMX >= 2
  Bit64u vmx_ept_vpid_cap_supported_bits;
  Bit64u vmx_vmfunc_supported_bits;
#endif
} VMX_CAP;

#if BX_SUPPORT_VMX >= 2

// used for pause loop exiting
struct VMX_PLE {
  Bit32u pause_loop_exiting_gap;
  Bit32u pause_loop_exiting_window;
  Bit64u last_pause_time;
  Bit64u first_pause_time;
};

#endif

typedef struct bx_VMCS
{
  //
  // VM-Execution Control Fields
  //

#define VMX_VM_EXEC_CTRL1_EXTERNAL_INTERRUPT_VMEXIT   (1 << 0)
#define VMX_VM_EXEC_CTRL1_NMI_EXITING                 (1 << 3)
#define VMX_VM_EXEC_CTRL1_VIRTUAL_NMI                 (1 << 5) /* Virtual NMI */
#define VMX_VM_EXEC_CTRL1_VMX_PREEMPTION_TIMER_VMEXIT (1 << 6) /* VMX preemption timer */
#define VMX_VM_EXEC_CTRL1_PROCESS_POSTED_INTERRUPTS   (1 << 7) /* Posted Interrupts (not implemented) */

#define VMX_VM_EXEC_CTRL1_SUPPORTED_BITS \
    (BX_CPU_THIS_PTR vmx_cap.vmx_pin_vmexec_ctrl_supported_bits)

   Bit32u vmexec_ctrls1;

#define VMX_VM_EXEC_CTRL2_INTERRUPT_WINDOW_VMEXIT   (1 << 2)
#define VMX_VM_EXEC_CTRL2_TSC_OFFSET                (1 << 3)
#define VMX_VM_EXEC_CTRL2_HLT_VMEXIT                (1 << 7)
#define VMX_VM_EXEC_CTRL2_INVLPG_VMEXIT             (1 << 9)
#define VMX_VM_EXEC_CTRL2_MWAIT_VMEXIT              (1 << 10)
#define VMX_VM_EXEC_CTRL2_RDPMC_VMEXIT              (1 << 11)
#define VMX_VM_EXEC_CTRL2_RDTSC_VMEXIT              (1 << 12)
#define VMX_VM_EXEC_CTRL2_CR3_WRITE_VMEXIT          (1 << 15) /* legacy must be '1 */
#define VMX_VM_EXEC_CTRL2_CR3_READ_VMEXIT           (1 << 16) /* legacy must be '1 */
#define VMX_VM_EXEC_CTRL2_CR8_WRITE_VMEXIT          (1 << 19) /* TPR shadow */
#define VMX_VM_EXEC_CTRL2_CR8_READ_VMEXIT           (1 << 20) /* TPR shadow */
#define VMX_VM_EXEC_CTRL2_TPR_SHADOW                (1 << 21) /* TPR shadow */
#define VMX_VM_EXEC_CTRL2_NMI_WINDOW_EXITING        (1 << 22) /* Virtual NMI */
#define VMX_VM_EXEC_CTRL2_DRx_ACCESS_VMEXIT         (1 << 23)
#define VMX_VM_EXEC_CTRL2_IO_VMEXIT                 (1 << 24)
#define VMX_VM_EXEC_CTRL2_IO_BITMAPS                (1 << 25)
#define VMX_VM_EXEC_CTRL2_MONITOR_TRAP_FLAG         (1 << 27) /* Monitor Trap Flag */
#define VMX_VM_EXEC_CTRL2_MSR_BITMAPS               (1 << 28)
#define VMX_VM_EXEC_CTRL2_MONITOR_VMEXIT            (1 << 29)
#define VMX_VM_EXEC_CTRL2_PAUSE_VMEXIT              (1 << 30)
#define VMX_VM_EXEC_CTRL2_SECONDARY_CONTROLS        (1 << 31)

#define VMX_VM_EXEC_CTRL2_SUPPORTED_BITS \
    (BX_CPU_THIS_PTR vmx_cap.vmx_proc_vmexec_ctrl_supported_bits)

   Bit32u vmexec_ctrls2;

#define VMX_VM_EXEC_CTRL3_VIRTUALIZE_APIC_ACCESSES  (1 <<  0) /* APIC virtualization */
#define VMX_VM_EXEC_CTRL3_EPT_ENABLE                (1 <<  1) /* EPT */
#define VMX_VM_EXEC_CTRL3_DESCRIPTOR_TABLE_VMEXIT   (1 <<  2) /* Descriptor Table VMEXIT */
#define VMX_VM_EXEC_CTRL3_RDTSCP                    (1 <<  3)
#define VMX_VM_EXEC_CTRL3_VIRTUALIZE_X2APIC_MODE    (1 <<  4) /* Virtualize X2APIC */
#define VMX_VM_EXEC_CTRL3_VPID_ENABLE               (1 <<  5) /* VPID */
#define VMX_VM_EXEC_CTRL3_WBINVD_VMEXIT             (1 <<  6) /* WBINVD VMEXIT */
#define VMX_VM_EXEC_CTRL3_UNRESTRICTED_GUEST        (1 <<  7) /* Unrestricted Guest */
#define VMX_VM_EXEC_CTRL3_VIRTUALIZE_APIC_REGISTERS (1 <<  8)
#define VMX_VM_EXEC_CTRL3_VIRTUAL_INT_DELIVERY      (1 <<  9)
#define VMX_VM_EXEC_CTRL3_PAUSE_LOOP_VMEXIT         (1 << 10) /* PAUSE loop exiting */
#define VMX_VM_EXEC_CTRL3_RDRAND_VMEXIT             (1 << 11)
#define VMX_VM_EXEC_CTRL3_INVPCID                   (1 << 12)
#define VMX_VM_EXEC_CTRL3_VMFUNC_ENABLE             (1 << 13) /* VM Functions */
#define VMX_VM_EXEC_CTRL3_VMCS_SHADOWING            (1 << 14) /* VMCS Shadowing */
#define VMX_VM_EXEC_CTRL3_SGX_ENCLS_VMEXIT          (1 << 15) /* ENCLS/SGX */
#define VMX_VM_EXEC_CTRL3_RDSEED_VMEXIT             (1 << 16)
#define VMX_VM_EXEC_CTRL3_PML_ENABLE                (1 << 17) /* Page Modification Logging */
#define VMX_VM_EXEC_CTRL3_EPT_VIOLATION_EXCEPTION   (1 << 18) /* #VE Exception */
#define VMX_VM_EXEC_CTRL3_SUPPRESS_GUEST_VMX_TRACE  (1 << 19) /* Processor Trace (not implemented) */
#define VMX_VM_EXEC_CTRL3_XSAVES_XRSTORS            (1 << 20) /* XSAVES */
#define VMX_VM_EXEC_CTRL3_MBE_CTRL                  (1 << 22) /* Mode Based Execution Control (not implemented yet) */
#define VMX_VM_EXEC_CTRL3_SUBPAGE_WR_PROTECT_CTRL   (1 << 23) /* Sub-Page Write Protection Control */
#define VMX_VM_EXEC_CTRL3_TSC_SCALING               (1 << 25) /* TSC Scaling */

#define VMX_VM_EXEC_CTRL3_SUPPORTED_BITS \
    (BX_CPU_THIS_PTR vmx_cap.vmx_vmexec_ctrl2_supported_bits)

   Bit32u vmexec_ctrls3;

   Bit64u vmcs_linkptr;

   Bit64u tsc_multiplier;

   Bit32u vm_exceptions_bitmap;
   Bit32u vm_pf_mask;
   Bit32u vm_pf_match;
   Bit64u io_bitmap_addr[2];
   bx_phy_address msr_bitmap_addr;

   bx_address vm_cr0_mask;
   bx_address vm_cr0_read_shadow;
   bx_address vm_cr4_mask;
   bx_address vm_cr4_read_shadow;

#define VMX_CR3_TARGET_MAX_CNT 4

   Bit32u vm_cr3_target_cnt;
   bx_address vm_cr3_target_value[VMX_CR3_TARGET_MAX_CNT];

#if BX_SUPPORT_X86_64
   bx_phy_address virtual_apic_page_addr;
   Bit32u vm_tpr_threshold;
   bx_phy_address apic_access_page;
   unsigned apic_access;
#endif

#if BX_SUPPORT_VMX >= 2
   Bit64u eptptr;
   Bit16u vpid;
   Bit64u pml_address;
   Bit16u pml_index;
   Bit64u spptp;
#endif

#if BX_SUPPORT_VMX >= 2
   VMX_PLE ple;
#endif

#if BX_SUPPORT_VMX >= 2
   Bit8u svi; /* Servicing Virtual Interrupt */
   Bit8u rvi; /* Requesting Virtual Interrupt */
   Bit8u vppr;

   Bit32u eoi_exit_bitmap[8];
#endif

#if BX_SUPPORT_VMX >= 2
   bx_phy_address vmread_bitmap_addr, vmwrite_bitmap_addr;
#endif

#if BX_SUPPORT_VMX >= 2
   bx_phy_address ve_info_addr;
   Bit16u eptp_index;
#endif

#if BX_SUPPORT_VMX >= 2
   Bit64u xss_exiting_bitmap;
#endif

   //
   // VM-Exit Control Fields
   //

#define VMX_VMEXIT_CTRL1_SAVE_DBG_CTRLS             (1 <<  2) /* legacy must be '1 */
#define VMX_VMEXIT_CTRL1_HOST_ADDR_SPACE_SIZE       (1 <<  9)
#define VMX_VMEXIT_CTRL1_LOAD_PERF_GLOBAL_CTRL_MSR  (1 << 12) /* Perf Global Control */
#define VMX_VMEXIT_CTRL1_INTA_ON_VMEXIT             (1 << 15)
#define VMX_VMEXIT_CTRL1_STORE_PAT_MSR              (1 << 18) /* PAT */
#define VMX_VMEXIT_CTRL1_LOAD_PAT_MSR               (1 << 19) /* PAT */
#define VMX_VMEXIT_CTRL1_STORE_EFER_MSR             (1 << 20) /* EFER */
#define VMX_VMEXIT_CTRL1_LOAD_EFER_MSR              (1 << 21) /* EFER */
#define VMX_VMEXIT_CTRL1_STORE_VMX_PREEMPTION_TIMER (1 << 22) /* VMX preemption timer */
#define VMX_VMEXIT_CTRL1_CLEAR_BNDCFGS              (1 << 23) /* MPX (not implemented) */
#define VMX_VMEXIT_CTRL1_SUPPRESS_HOST_VMX_TRACE    (1 << 24) /* Processor Trace (not implemented) */
#define VMX_VMEXIT_CTRL1_LOAD_HOST_CET_STATE        (1 << 28) /* CET */
#define VMX_VMEXIT_CTRL1_LOAD_HOST_PKRS             (1 << 29) /* Supervisor-Mode Protection Keys */

#define VMX_VMEXIT_CTRL1_SUPPORTED_BITS \
    (BX_CPU_THIS_PTR vmx_cap.vmx_vmexit_ctrl_supported_bits)

   Bit32u vmexit_ctrls;

   Bit32u vmexit_msr_store_cnt;
   bx_phy_address vmexit_msr_store_addr;
   Bit32u vmexit_msr_load_cnt;
   bx_phy_address vmexit_msr_load_addr;

   //
   // VM-Entry Control Fields
   //

#define VMX_VMENTRY_CTRL1_LOAD_DBG_CTRLS                    (1 <<  2) /* legacy must be '1 */
#define VMX_VMENTRY_CTRL1_X86_64_GUEST                      (1 <<  9)
#define VMX_VMENTRY_CTRL1_SMM_ENTER                         (1 << 10)
#define VMX_VMENTRY_CTRL1_DEACTIVATE_DUAL_MONITOR_TREATMENT (1 << 11)
#define VMX_VMENTRY_CTRL1_LOAD_PERF_GLOBAL_CTRL_MSR         (1 << 13) /* Perf Global Ctrl */
#define VMX_VMENTRY_CTRL1_LOAD_PAT_MSR                      (1 << 14) /* PAT */
#define VMX_VMENTRY_CTRL1_LOAD_EFER_MSR                     (1 << 15) /* EFER */
#define VMX_VMENTRY_CTRL1_LOAD_BNDCFGS                      (1 << 16) /* MPX (not implemented) */
#define VMX_VMENTRY_CTRL1_SUPPRESS_VMX_PACKETS              (1 << 17) /* Processor Trace (not implemented) */
#define VMX_VMENTRY_CTRL1_LOAD_GUEST_CET_STATE              (1 << 20) /* CET */
#define VMX_VMENTRY_CTRL1_LOAD_GUEST_PKRS                   (1 << 22) /* Supervisor-Mode Protection Keys */

#define VMX_VMENTRY_CTRL1_SUPPORTED_BITS \
    (BX_CPU_THIS_PTR vmx_cap.vmx_vmentry_ctrl_supported_bits)
   
   Bit32u vmentry_ctrls;

   Bit32u vmentry_msr_load_cnt;
   bx_phy_address vmentry_msr_load_addr;

   Bit32u vmentry_interr_info;
   Bit32u vmentry_excep_err_code;
   Bit32u vmentry_instr_length;

   //
   // VM Functions
   //

#if BX_SUPPORT_VMX >= 2

#define VMX_VMFUNC_CTRL1_SUPPORTED_BITS \
    (BX_CPU_THIS_PTR vmx_cap.vmx_vmfunc_supported_bits)

   Bit64u vmfunc_ctrls;

   Bit64u eptp_list_address;

#endif

   //
   // VMCS Hidden and Read-Only Fields
   //
   Bit32u idt_vector_info;
   Bit32u idt_vector_error_code;

   //
   // VMCS Host State
   //

   VMCS_HOST_STATE host_state;

} VMCS_CACHE;

#define PIN_VMEXIT(ctrl) (BX_CPU_THIS_PTR vmcs.vmexec_ctrls1 & (ctrl))
#define     VMEXIT(ctrl) (BX_CPU_THIS_PTR vmcs.vmexec_ctrls2 & (ctrl))

#define SECONDARY_VMEXEC_CONTROL(ctrl) (BX_CPU_THIS_PTR vmcs.vmexec_ctrls3 & (ctrl))

const Bit32u BX_VMX_INTERRUPTS_BLOCKED_BY_STI      = (1 << 0);
const Bit32u BX_VMX_INTERRUPTS_BLOCKED_BY_MOV_SS   = (1 << 1);
const Bit32u BX_VMX_INTERRUPTS_BLOCKED_SMI_BLOCKED = (1 << 2);
const Bit32u BX_VMX_INTERRUPTS_BLOCKED_NMI_BLOCKED = (1 << 3);

const Bit32u BX_VMX_INTERRUPTIBILITY_STATE_MASK = \
  (BX_VMX_INTERRUPTS_BLOCKED_BY_STI | BX_VMX_INTERRUPTS_BLOCKED_BY_MOV_SS | BX_VMX_INTERRUPTS_BLOCKED_SMI_BLOCKED | BX_VMX_INTERRUPTS_BLOCKED_NMI_BLOCKED);

//
// IA32_VMX_BASIC MSR (0x480)
// --------------

const Bit32u BX_VMCS_SHADOW_BIT_MASK = 0x80000000;

//
// 30:00 VMCS revision id
// 31:31 shadow VMCS indicator
// -----------------------------
// 32:47 VMCS region size, 0 <= size <= 4096
// 48:48 use 32-bit physical address, set when x86_64 disabled
// 49:49 support of dual-monitor treatment of SMI and SMM
// 53:50 memory type used for VMCS access
// 54:54 logical processor reports information in the VM-exit 
//       instruction-information field on VM exits due to
//       execution of INS/OUTS
// 55:55 set if any VMX controls that default to `1 may be
//       cleared to `0, also indicates that IA32_VMX_TRUE_PINBASED_CTLS,
//       IA32_VMX_TRUE_PROCBASED_CTLS, IA32_VMX_TRUE_EXIT_CTLS and
//       IA32_VMX_TRUE_ENTRY_CTLS MSRs are supported.
// 56:56 if set software can use VM entry to deliver a hardware exception
//       with or without an error code, regardless of vector
// 57:63 reserved, must be zero
//

#define VMX_MSR_VMX_BASIC_LO (BX_CPU_THIS_PTR vmcs_map->get_vmcs_revision_id())
#define VMX_MSR_VMX_BASIC_HI \
     (VMX_VMCS_AREA_SIZE | ((!is_cpu_extension_supported(BX_ISA_LONG_MODE)) << 16) | \
     (BX_MEMTYPE_WB << 18) | (1<<22)) | ((BX_SUPPORT_VMX >= 2) ? (1<<23) : 0) | \
     (is_cpu_extension_supported(BX_ISA_CET) ? (1<<24) : 0)

#define VMX_MSR_VMX_BASIC \
   ((((Bit64u) VMX_MSR_VMX_BASIC_HI) << 32) | VMX_MSR_VMX_BASIC_LO)


// ------------------------------------------------------------------------
//              reserved bit (must be '1) settings for VMX MSRs
// ------------------------------------------------------------------------

// -----------------------------------------
//  3322|2222|2222|1111|1111|11  |    |
//  1098|7654|3210|9876|5432|1098|7654|3210
// -----------------------------------------
//  ----.----.----.----.----.----.---1.-11-  MSR (0x481) IA32_MSR_VMX_PINBASED_CTRLS
//  ----.-1--.----.---1.111-.---1.-111.--1-  MSR (0x482) IA32_MSR_VMX_PROCBASED_CTRLS
//  ----.----.----.--11.-11-.11-1.1111.1111  MSR (0x483) IA32_MSR_VMX_VMEXIT_CTRLS
//  ----.----.----.----.---1.---1.1111.1111  MSR (0x484) IA32_MSR_VMX_VMENTRY_CTRLS
//

// IA32_MSR_VMX_PINBASED_CTRLS MSR (0x481)
// ---------------------------

// Bits 1, 2 and 4 must be '1 

// Allowed 0-settings: VMentry fail if a bit is '0 in pin-based vmexec controls
// but set to '1 in this MSR
#define VMX_MSR_VMX_PINBASED_CTRLS_LO (0x00000016)
// Allowed 1-settings: VMentry fail if a bit is '1 in pin-based vmexec controls
// but set to '0 in this MSR.
#define VMX_MSR_VMX_PINBASED_CTRLS_HI \
       (VMX_VM_EXEC_CTRL1_SUPPORTED_BITS | VMX_MSR_VMX_PINBASED_CTRLS_LO)

#define VMX_MSR_VMX_PINBASED_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_PINBASED_CTRLS_HI) << 32) | VMX_MSR_VMX_PINBASED_CTRLS_LO)

// IA32_MSR_VMX_TRUE_PINBASED_CTRLS MSR (0x48d)
// --------------------------------

// no changes from original IA32_MSR_VMX_PINBASED_CTRLS
#define VMX_MSR_VMX_TRUE_PINBASED_CTRLS_LO (VMX_MSR_VMX_PINBASED_CTRLS_LO)
#define VMX_MSR_VMX_TRUE_PINBASED_CTRLS_HI (VMX_MSR_VMX_PINBASED_CTRLS_HI)

#define VMX_MSR_VMX_TRUE_PINBASED_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_TRUE_PINBASED_CTRLS_HI) << 32) | VMX_MSR_VMX_TRUE_PINBASED_CTRLS_LO)


// IA32_MSR_VMX_PROCBASED_CTRLS MSR (0x482)
// ----------------------------

// Bits 1, 4-6, 8, 13-16, 26 must be '1
// Bits 0, 17, 18 must be '0
// Bits 19-21 also must be '0 when x86-64 is not supported

// Allowed 0-settings (must be '1 bits)
#define VMX_MSR_VMX_PROCBASED_CTRLS_LO (0x0401E172)
// Allowed 1-settings
#define VMX_MSR_VMX_PROCBASED_CTRLS_HI \
       (VMX_VM_EXEC_CTRL2_SUPPORTED_BITS | VMX_MSR_VMX_PROCBASED_CTRLS_LO)

#define VMX_MSR_VMX_PROCBASED_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_PROCBASED_CTRLS_HI) << 32) | VMX_MSR_VMX_PROCBASED_CTRLS_LO)

// IA32_MSR_VMX_TRUE_PROCBASED_CTRLS MSR (0x48e)
// ---------------------------------

// Bits 15 and 16 no longer must be '1
#define VMX_MSR_VMX_TRUE_PROCBASED_CTRLS_LO (0x04006172)
#define VMX_MSR_VMX_TRUE_PROCBASED_CTRLS_HI (VMX_MSR_VMX_PROCBASED_CTRLS_HI)

#define VMX_MSR_VMX_TRUE_PROCBASED_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_TRUE_PROCBASED_CTRLS_HI) << 32) | VMX_MSR_VMX_TRUE_PROCBASED_CTRLS_LO)


// IA32_MSR_VMX_VMEXIT_CTRLS MSR (0x483)
// -------------------------

// Bits 0-8, 10, 11, 13, 14, 16, 17 must be '1

// Allowed 0-settings (must be '1 bits)
#define VMX_MSR_VMX_VMEXIT_CTRLS_LO (0x00036DFF)
// Allowed 1-settings
#define VMX_MSR_VMX_VMEXIT_CTRLS_HI \
       (VMX_VMEXIT_CTRL1_SUPPORTED_BITS | VMX_MSR_VMX_VMEXIT_CTRLS_LO)

#define VMX_MSR_VMX_VMEXIT_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_VMEXIT_CTRLS_HI) << 32) | VMX_MSR_VMX_VMEXIT_CTRLS_LO)

// IA32_MSR_VMX_TRUE_VMEXIT_CTRLS MSR (0x48f)
// ------------------------------

// Bit 2 no longer must be '1
#define VMX_MSR_VMX_TRUE_VMEXIT_CTRLS_LO (0x00036DFB)
#define VMX_MSR_VMX_TRUE_VMEXIT_CTRLS_HI (VMX_MSR_VMX_VMEXIT_CTRLS_HI)

#define VMX_MSR_VMX_TRUE_VMEXIT_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_TRUE_VMEXIT_CTRLS_HI) << 32) | VMX_MSR_VMX_TRUE_VMEXIT_CTRLS_LO)


// IA32_MSR_VMX_VMENTRY_CTRLS MSR (0x484)
// --------------------------

// Bits 0-8, 12 must be '1

// Allowed 0-settings (must be '1 bits)
#define VMX_MSR_VMX_VMENTRY_CTRLS_LO (0x000011FF)
// Allowed 1-settings
#define VMX_MSR_VMX_VMENTRY_CTRLS_HI \
       (VMX_VMENTRY_CTRL1_SUPPORTED_BITS | VMX_MSR_VMX_VMENTRY_CTRLS_LO)

#define VMX_MSR_VMX_VMENTRY_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_VMENTRY_CTRLS_HI) << 32) | VMX_MSR_VMX_VMENTRY_CTRLS_LO)

// IA32_MSR_VMX_TRUE_VMENTRY_CTRLS MSR (0x490)
// -------------------------------

// Bit 2 is longer must be '1
#define VMX_MSR_VMX_TRUE_VMENTRY_CTRLS_LO (0x000011FB)
#define VMX_MSR_VMX_TRUE_VMENTRY_CTRLS_HI (VMX_MSR_VMX_VMENTRY_CTRLS_HI)

#define VMX_MSR_VMX_TRUE_VMENTRY_CTRLS \
   ((((Bit64u) VMX_MSR_VMX_TRUE_VMENTRY_CTRLS_HI) << 32) | VMX_MSR_VMX_TRUE_VMENTRY_CTRLS_LO)


// IA32_MSR_VMX_MISC MSR (0x485)
// -----------------

//   [4:0] - TSC:VMX_PREEMPTION_TIMER ratio
//     [5] - VMEXITs store the value of EFER.LMA into the “x86-64 guest"
//           VMENTRY control (must set to '1 if 'unrestricted guest' is supported)
//     [6] - support VMENTER to HLT state
//     [7] - support VMENTER to SHUTDOWN state
//     [8] - support VMENTER to WAIT_FOR_SIPI state
//    [14] - Intel Processor Trace (Intel PT) can be used in VMX operation
//    [15] - RDMSR can be used in SMM to read the SMBASE MSR
// [24:16] - number of CR3 target values supported
// [27:25] - (N+1)*512 - recommended maximum MSRs in MSR store list
//    [28] - MSR_IA32_SMM_MONITOR_CTL[2] enable
//    [29] - Allow VMWRITE to R/O VMCS fields (to be used with VMCS Shadowing)
//    [30] - Allow injection of a software interrupt, software exception, or privileged
//           software exception with an instruction length of 0
//    [31] - Reserved
// --------------------------------------------
// [63:32] - MSEG revision ID used by processor

#if BX_SUPPORT_VMX >= 2
const Bit32u VMX_MISC_STORE_LMA_TO_X86_64_GUEST_VMENTRY_CONTROL = (1<<5);
#else
const Bit32u VMX_MISC_STORE_LMA_TO_X86_64_GUEST_VMENTRY_CONTROL = 0;
#endif

const Bit32u VMX_SUPPORT_VMENTER_TO_NON_ACTIVE_STATE = (1<<6) | (1<<7) | (1<<8);

const Bit32u VMX_MISC_SUPPORT_VMWRITE_READ_ONLY_FIELDS            = (1<<29);
const Bit32u VMX_MISC_ALLOW_INJECTION_OF_SW_INTERRUPT_WITH_ILEN_0 = (1<<30);

//Rate to increase VMX preemtion timer
const Bit32u VMX_MISC_PREEMPTION_TIMER_RATE = 0;

#define VMX_MSR_MISC (VMX_MISC_PREEMPTION_TIMER_RATE | \
                      VMX_MISC_STORE_LMA_TO_X86_64_GUEST_VMENTRY_CONTROL | \
                      VMX_SUPPORT_VMENTER_TO_NON_ACTIVE_STATE | \
                     (VMX_CR3_TARGET_MAX_CNT << 16) | \
                     (BX_SUPPORT_VMX_EXTENSION(BX_VMX_VMCS_SHADOWING) ? VMX_MISC_SUPPORT_VMWRITE_READ_ONLY_FIELDS : 0) | \
                     (BX_SUPPORT_VMX_EXTENSION(BX_VMX_SW_INTERRUPT_INJECTION_ILEN_0) ? VMX_MISC_ALLOW_INJECTION_OF_SW_INTERRUPT_WITH_ILEN_0 : 0))

//
// IA32_VMX_CR0_FIXED0 MSR (0x486)   IA32_VMX_CR0_FIXED1 MSR (0x487)
// -------------------               -------------------

// allowed 0-setting in CR0 in VMX mode
// bits PE(0), NE(5) and PG(31) required to be set in CR0 to enter VMX mode
const Bit32u VMX_MSR_CR0_FIXED0_LO = 0x80000021;
const Bit32u VMX_MSR_CR0_FIXED0_HI = 0x00000000;

const Bit64u VMX_MSR_CR0_FIXED0 = 
   ((((Bit64u) VMX_MSR_CR0_FIXED0_HI) << 32) | VMX_MSR_CR0_FIXED0_LO);

// allowed 1-setting in CR0 in VMX mode
const Bit32u VMX_MSR_CR0_FIXED1_LO = 0xFFFFFFFF;
const Bit32u VMX_MSR_CR0_FIXED1_HI = 0x00000000;

const Bit64u VMX_MSR_CR0_FIXED1 = 
   ((((Bit64u) VMX_MSR_CR0_FIXED1_HI) << 32) | VMX_MSR_CR0_FIXED1_LO);

//
// IA32_VMX_CR4_FIXED0 MSR (0x488)   IA32_VMX_CR4_FIXED1 MSR (0x489)
// -------------------               -------------------

// allowed 0-setting in CR0 in VMX mode
// bit VMXE(13) required to be set in CR4 to enter VMX mode
const Bit32u VMX_MSR_CR4_FIXED0_LO = 0x00002000;
const Bit32u VMX_MSR_CR4_FIXED0_HI = 0x00000000;

const Bit64u VMX_MSR_CR4_FIXED0 = 
   ((((Bit64u) VMX_MSR_CR4_FIXED0_HI) << 32) | VMX_MSR_CR4_FIXED0_LO);

// allowed 1-setting in CR0 in VMX mode
#define VMX_MSR_CR4_FIXED1_LO (BX_CPU_THIS_PTR cr4_suppmask)
#define VMX_MSR_CR4_FIXED1_HI (0)

#define VMX_MSR_CR4_FIXED1 \
   ((((Bit64u) VMX_MSR_CR4_FIXED1_HI) << 32) | VMX_MSR_CR4_FIXED1_LO)


//
// IA32_VMX_VMCS_ENUM MSR (0x48a)
// ------------------

//
// 09:01 highest index value used for any VMCS encoding
// 63:10 reserved, must be zero
//

#define VMX_MSR_VMCS_ENUM_LO (VMX_HIGHEST_VMCS_ENCODING)
#define VMX_MSR_VMCS_ENUM_HI (0x00000000)

#define VMX_MSR_VMCS_ENUM \
   ((((Bit64u) VMX_MSR_VMCS_ENUM_HI) << 32) | VMX_MSR_VMCS_ENUM_LO)


// IA32_VMX_MSR_PROCBASED_CTRLS2 MSR (0x48b)
// -----------------------------

// Allowed 0-settings (must be '1 bits)
#define VMX_MSR_VMX_PROCBASED_CTRLS2_LO (0x00000000)
// Allowed 1-settings
#define VMX_MSR_VMX_PROCBASED_CTRLS2_HI \
       (VMX_VM_EXEC_CTRL3_SUPPORTED_BITS | VMX_MSR_VMX_PROCBASED_CTRLS2_LO)

#define VMX_MSR_VMX_PROCBASED_CTRLS2 \
   ((((Bit64u) VMX_MSR_VMX_PROCBASED_CTRLS2_HI) << 32) | VMX_MSR_VMX_PROCBASED_CTRLS2_LO)

#if BX_SUPPORT_VMX >= 2

// IA32_VMX_EPT_VPID_CAP MSR (0x48c)
// ---------------------

enum VMX_INVEPT_INVVPID_type {
  BX_INVEPT_INVVPID_INDIVIDUAL_ADDRESS_INVALIDATION = 0,
  BX_INVEPT_INVVPID_SINGLE_CONTEXT_INVALIDATION,
  BX_INVEPT_INVVPID_ALL_CONTEXT_INVALIDATION,
  BX_INVEPT_INVVPID_SINGLE_CONTEXT_NON_GLOBAL_INVALIDATION
};

#define VMX_MSR_VMX_EPT_VPID_CAP \
   (BX_CPU_THIS_PTR vmx_cap.vmx_ept_vpid_cap_supported_bits)

#endif

#endif // _BX_VMX_INTEL_H_
