; $Id$

;; @file

; bootsector2 common routines - template containing code specific to each mode.

;

;

; Copyright (C) 2007-2014 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.

;

; The contents of this file may alternatively be used under the terms

; of the Common Development and Distribution License Version 1.0

; (CDDL) only, as it comes in the "COPYING.CDDL" file of the

; VirtualBox OSE distribution, in which case the provisions of the

; CDDL are applicable instead of those of the GPL.

;

; You may elect to license modified versions of this file under the

; terms and conditions of either the GPL or the CDDL or both.

;

%include "bootsector2-template-header.mac"

ALIGNCODE(32)

GLOBALNAME TMPL_NM(g_szMode)

db TMPL_MODE_STR, 0

;;

; Prints a string on the screen.

;

; @param ds:ax The string to print (null terminated).

;

; @uses nothing

;

BEGINPROC TMPL_NM(PrintStr)

push xBP

mov xBP, xSP

push xAX

push xBX

push xSI

mov xSI, xAX

.next:

lodsb

test al, al

jz .done

%ifdef TMPL_HAVE_BIOS

mov bx, 0ff00h

mov ah, 0eh

int 10h

%else

call TMPL_NM(PrintChr)

%endif

jmp .next

.done:

pop xSI

pop xBX

pop xAX

leave

ret

ENDPROC TMPL_NM(PrintStr)

;;

; Prints a string on the screen.

;

; @param al The character to print.

;

; @uses nothing

;

BEGINCODELOW

BEGINPROC TMPL_NM(PrintChr)

push xBP

mov xBP, xSP

push xAX

push xBX

%ifndef TMPL_HAVE_BIOS

%ifdef BS2_WITH_TRAPS

mov bx, cs

and xBX, 0x3

push xBX

jz .ring_ok

call TMPL_NM_CMN(Bs2ToRing0)

.ring_ok:

%endif

mov bl, al

call TMPL_NM(LeaveCpuMode)

mov al, bl

BITS 16

%endif

mov bx, 0ff00h

mov ah, 0eh

int 10h

%ifndef TMPL_HAVE_BIOS

call TMPL_NM(EnterCpuMode)

BITS TMPL_BITS

%ifdef BS2_WITH_TRAPS

pop xAX

test al, al

jz .ring_restored

call TMPL_NM_CMN(Bs2ToRingN)

.ring_restored:

%endif

%endif

pop xBX

pop xAX

leave

ret

ENDPROC TMPL_NM(PrintChr)

TMPL_BEGINCODE

%ifndef TMPL_HAVE_BIOS

;;

; Leaves the current CPU mode and returns to real mode.

;

; @uses nothing

;

BEGINPROC TMPL_NM(LeaveCpuMode)

jmp TMPL_NM(Bs2ExitMode)

ENDPROC TMPL_NM(LeaveCpuMode)

;;

; Undo what LeaveCpuMode did.

;

; @uses nothing

;

BEGINCODELOW

BITS 16

BEGINPROC TMPL_NM(EnterCpuMode)

jmp TMPL_NM(Bs2EnterMode_rm)

ENDPROC TMPL_NM(EnterCpuMode)

TMPL_BEGINCODE

BITS TMPL_BITS

%endif ; TMPL_HAVE_BIOS

;;

; Sets the global variable for the current CPU mode.

;

; @uses nothing.

;

BEGINPROC TMPL_NM(SetCpuModeGlobals)

%ifdef TMPL_CMN_PE

%ifdef BS2_INC_PE16

mov word [g_pfnPrintStrInternal_p16], PrintStr_pe16

mov word [g_pfnPrintChrInternal_p16], PrintChr_pe16

%endif

%ifdef BS2_INC_PE32

mov dword [g_pfnPrintStrInternal_p32], PrintStr_pe32

mov dword [g_pfnPrintChrInternal_p32], PrintChr_pe32

%endif

%elifdef TMPL_CMN_PP

%ifdef BS2_INC_PP16

mov word [g_pfnPrintStrInternal_p16], PrintStr_pp16

mov word [g_pfnPrintChrInternal_p16], PrintChr_pp16

%endif

%ifdef BS2_INC_PP32

mov dword [g_pfnPrintStrInternal_p32], PrintStr_pp32

mov dword [g_pfnPrintChrInternal_p32], PrintChr_pp32

%endif

%elifdef TMPL_CMN_PAE

%ifdef BS2_INC_PAE16

mov word [g_pfnPrintStrInternal_p16], PrintStr_pae16

mov word [g_pfnPrintChrInternal_p16], PrintChr_pae16

%endif

%ifdef BS2_INC_PAE32

mov dword [g_pfnPrintStrInternal_p32], PrintStr_pae32

mov dword [g_pfnPrintChrInternal_p32], PrintChr_pae32

%endif

%elifdef TMPL_CMN_LM

%ifdef BS2_INC_LM16

mov word [g_pfnPrintStrInternal_p16], PrintStr_lm16

mov word [g_pfnPrintChrInternal_p16], PrintChr_lm16

%endif

%ifdef BS2_INC_LM32

mov dword [g_pfnPrintStrInternal_p32], PrintStr_lm32

mov dword [g_pfnPrintChrInternal_p32], PrintChr_lm32

%endif

%ifdef BS2_INC_LM64

mov dword [g_pfnPrintStrInternal_p64], PrintStr_lm64

mov dword [g_pfnPrintChrInternal_p64], PrintChr_lm64

%endif

%elifdef TMPL_16BIT

mov word [TMPL_NM_CMN(g_pfnPrintStrInternal)], TMPL_NM(PrintStr)

mov word [TMPL_NM_CMN(g_pfnPrintChrInternal)], TMPL_NM(PrintChr)

%else

%error "missing case"

%endif

ret

ENDPROC TMPL_NM(SetCpuModeGlobals)

%include "bootsector2-template-footer.mac"