; $Id: VMMSwitcher.mac 16847 2009-02-17 14:45:25Z vboxsync $
;; @file
; VMM - World Switchers.
;

;
; Copyright (C) 2006-2007 Sun Microsystems, Inc.
;
; 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.
;
; Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
; Clara, CA 95054 USA or visit http://www.sun.com if you need
; additional information or have any questions.
;

%ifndef ___VMMSwitcher_mac
%define ___VMMSwitcher_mac

%include "iprt/asmdefs.mac"

; enum VMMSWITCHER {
%define VMMSWITCHER_INVALID             0
%define VMMSWITCHER_32_TO_32            1
%define VMMSWITCHER_32_TO_PAE           2
%define VMMSWITCHER_32_TO_AMD64         3
%define VMMSWITCHER_PAE_TO_32BIT        4
%define VMMSWITCHER_PAE_TO_PAE          5
%define VMMSWITCHER_PAE_TO_AMD64        6
%define VMMSWITCHER_AMD64_TO_32         7
%define VMMSWITCHER_AMD64_TO_PAE        8
%define VMMSWITCHER_AMD64_TO_AMD64      9
;; @todo the rest are all wrong. sync with vmm.h.
%define VMMSWITCHER_HOST_TO_VMX         9
%define VMMSWITCHER_HOST_TO_SVM         10
%define VMMSWITCHER_MAX                 12
; }


struc VMMSWITCHERDEF
    .pvCode:                        RTCCPTR_RES 1
    .pvFixups:                      RTCCPTR_RES 1
    .pszDesc:                       RTCCPTR_RES 1
    .pfnRelocate:                   RTCCPTR_RES 1
    .enmType:                       resd 1
    .cbCode:                        resd 1
    .offR0HostToGuest:              resd 1
    .offGCGuestToHost:              resd 1
    .offGCCallTrampoline:           resd 1
    .offGCGuestToHostAsm:           resd 1
    .offGCGuestToHostAsmHyperCtx:   resd 1
    .offGCGuestToHostAsmGuestCtx:   resd 1
    ; disasm help
    .offHCCode0:                    resd 1
    .cbHCCode0:                     resd 1
    .offHCCode1:                    resd 1
    .cbHCCode1:                     resd 1
    .offIDCode0:                    resd 1
    .cbIDCode0:                     resd 1
    .offIDCode1:                    resd 1
    .cbIDCode1:                     resd 1
    .offGCCode:                     resd 1
    .cbGCCode:                      resd 1
endstruc


;/** @name   Fixup Types.
; * @{
; */
%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
%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_32BIT_CR3     15
%define FIX_HYPER_PAE_CR3       16
%define FIX_HYPER_CS            18
%define FIX_HYPER_DS            19
%define FIX_HYPER_TSS           20
%define FIX_GC_TSS_GDTE_DW2     21
%define FIX_CR4_MASK            22
%define FIX_CR4_OSFSXR          23
%define FIX_NO_FXSAVE_JMP       24
%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_THE_END             255
;/** @} */


;;
; Generate a fixup label.
; @param %1     Type of fixup (use one of those %defines)
; @param %2     Offset into the instruction.
; @param %3     Optional fixup data.
%macro FIXUP 2-*
BEGINDATA
    db  %1  ; the type
    dd  %%instruction + %2 - NAME(Start)
    %rotate 2
    %rep %0 - 2
        dd      %1
        %rotate 1
    %endrep

BEGINCODE
%%instruction:
%endmacro


;; IMPORTANT all COM_ functions trashes esi, some edi and the LOOP_SHORT_WHILE kills ecx.
;%define DEBUG_STUFF 1

%ifdef DEBUG_STUFF
    %define DEBUG_CHAR(ch) COM_CHAR ch
    %define DEBUG_S_CHAR(ch) COM_CHAR ch
%else
    %define DEBUG_CHAR(ch)
    %define DEBUG_S_CHAR(ch)
%endif

%endif ; !___VMMSwitcher_mac