proc VMguest
    push rbx

    mov ebx, ecx

    ;; es cs ss ds fs gs ldtr tr - selector
    .if ebx = GUEST16

    .elseif ebx = GUEST32
        mov eax, 8h
        mov ecx, 10h

    .elseif ebx = GUEST64
        mov eax, 10h
        mov ecx, 20h
    .endif

    mov [vm_mem.g_es_sel], ecx
    mov [vm_mem.g_cs_sel], eax
    mov [vm_mem.g_ss_sel], ecx
    mov [vm_mem.g_ds_sel], ecx
    mov [vm_mem.g_fs_sel], eax
    mov [vm_mem.g_gs_sel], eax
    mov [vm_mem.g_ldtr_sel], 0
    mov [vm_mem.g_tr_sel], 18h


    ;; es cs ss ds fs gs ldtr tr gdtr idtr - limit
    .if ebx = GUEST16

    .elseif ebx = GUEST32

    .elseif ebx = GUEST64
        mov eax, 0ffffffffh
        mov ecx, GDT64_lim
        mov edx, IDT64_lim
    .endif

        mov [vm_mem.g_es_limit], eax
        mov [vm_mem.g_cs_limit], eax
        mov [vm_mem.g_ss_limit], eax
        mov [vm_mem.g_ds_limit], eax
        mov [vm_mem.g_fs_limit], eax
        mov [vm_mem.g_gs_limit], eax

        mov word [vm_mem.g_ldtr_limit], ax
        mov [vm_mem.g_tr_limit], 10h

        mov [vm_mem.g_gdtr_limit], ecx
        mov [vm_mem.g_idtr_limit], edx

    ;; es cs ss ds fs gs ldtr tr - access
    .if ebx = GUEST16

    .elseif ebx = GUEST32

    .elseif ebx = GUEST64
        mov eax, 0c093h
        mov ecx, 0a09bh

    .endif
        mov [vm_mem.g_es_acc], eax
        mov [vm_mem.g_cs_acc], ecx
        mov [vm_mem.g_ss_acc], eax
        mov [vm_mem.g_ds_acc], eax
        mov [vm_mem.g_fs_acc], eax
        mov [vm_mem.g_gs_acc], eax

        mov [vm_mem.g_ldtr_acc], 82h
        mov [vm_mem.g_tr_acc], 8bh

    ;; interruptibility state
    mov [vm_mem.g_interrupt], 8

    ;; smbase

    ;; vmx-preemption timer

    ;; ia32_sysenter_cs

    ;; vmcs link pointer
    mov [vm_mem.g_vmcs_linkpointer_f], 0ffffffffh
    mov [vm_mem.g_vmcs_linkpointer_hi], 0ffffffffh

    ;; ia32_debugctl

    ;; pdpte0 pdpte1 pdpte2 pdpte3

    ;; pat

    ;; efer
    .if ebx = GUEST16

    .elseif ebx = GUEST32

    .elseif ebx = GUEST64
        mov eax, 500h
    .endif

    mov [vm_mem.g_ia32_efer_f], eax

    ;; es cs ss ds ldtr - base
    .if ebx = GUEST16

    .elseif ebx = GUEST32

    .elseif ebx = GUEST64

    .endif

    ;; dr7

    ;; rflags
    mov [vm_mem.g_rflags], 3

    ;; pending debug extension

    ;; cr0 cr3 cr4
    .if ebx = GUEST16

    .elseif ebx = GUEST32


    .elseif ebx = GUEST64
        mov ecx, 80000031h
        mov rdx, 60000h
        mov rax, cr4
    .endif
        mov [vm_mem.g_cr0], rcx
        mov [vm_mem.g_cr3], rdx
        mov [vm_mem.g_cr4], rax


    ;; fs gs tr gdtr idtr - base
    .if ebx = GUEST16

    .elseif ebx = GUEST32

    .elseif ebx = GUEST64
        mov rax, GDT64
        mov rcx, IDT64
    .endif

        mov [vm_mem.g_gdtr_base], rax
        mov [vm_mem.g_idtr_base], rcx


    ;; rsp rip
        mov [vm_mem.g_rsp], RSP_BASE
        mov [vm_mem.g_rip], VmxGuest


    ;; ia32_sysenter_esp ia32_sysenter_eip


    pop rbx
    ret
endp