| 1 | ; $Id: bs3-cmn-SelProtFar16DataToFlat.asm 82968 2020-02-04 10:35:17Z vboxsync $
|
|---|
| 2 | ;; @file
|
|---|
| 3 | ; BS3Kit - Bs3SelProtFar16DataToFlat.
|
|---|
| 4 | ;
|
|---|
| 5 |
|
|---|
| 6 | ;
|
|---|
| 7 | ; Copyright (C) 2007-2020 Oracle Corporation
|
|---|
| 8 | ;
|
|---|
| 9 | ; This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | ; available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | ; you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | ; General Public License (GPL) as published by the Free Software
|
|---|
| 13 | ; Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | ; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | ; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | ;
|
|---|
| 17 | ; The contents of this file may alternatively be used under the terms
|
|---|
| 18 | ; of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | ; (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | ; VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | ; CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | ;
|
|---|
| 23 | ; You may elect to license modified versions of this file under the
|
|---|
| 24 | ; terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | ;
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | ;*********************************************************************************************************************************
|
|---|
| 29 | ;* Header Files *
|
|---|
| 30 | ;*********************************************************************************************************************************
|
|---|
| 31 | %include "bs3kit-template-header.mac"
|
|---|
| 32 |
|
|---|
| 33 |
|
|---|
| 34 | ;*********************************************************************************************************************************
|
|---|
| 35 | ;* External Symbols *
|
|---|
| 36 | ;*********************************************************************************************************************************
|
|---|
| 37 | BS3_EXTERN_CMN Bs3SelFar32ToFlat32NoClobber
|
|---|
| 38 | TMPL_BEGIN_TEXT
|
|---|
| 39 | %if TMPL_BITS == 16
|
|---|
| 40 | CPU 8086
|
|---|
| 41 | %endif
|
|---|
| 42 |
|
|---|
| 43 |
|
|---|
| 44 | ;;
|
|---|
| 45 | ; @cproto BS3_CMN_PROTO_NOSB(uint32_t, Bs3SelProtFar16DataToFlat,(uint32_t uFar1616));
|
|---|
| 46 | ;
|
|---|
| 47 | ; @uses Only return registers (ax:dx, eax, eax)
|
|---|
| 48 | ; @remarks No 20h scratch area requirements.
|
|---|
| 49 | ;
|
|---|
| 50 | BS3_PROC_BEGIN_CMN Bs3SelProtFar16DataToFlat, BS3_PBC_NEAR ; Far stub generated by the makefile/bs3kit.h.
|
|---|
| 51 | push xBP
|
|---|
| 52 | mov xBP, xSP
|
|---|
| 53 |
|
|---|
| 54 | ;
|
|---|
| 55 | ; Just call Bs3SelFar32ToFlat32NoClobber to do the job.
|
|---|
| 56 | ;
|
|---|
| 57 | %if TMPL_BITS == 16
|
|---|
| 58 | push word [xBP + xCB + cbCurRetAddr + 2]
|
|---|
| 59 | xor ax, ax
|
|---|
| 60 | push ax
|
|---|
| 61 | push word [xBP + xCB + cbCurRetAddr]
|
|---|
| 62 | call Bs3SelFar32ToFlat32NoClobber
|
|---|
| 63 | add sp, 6
|
|---|
| 64 | %else
|
|---|
| 65 | %if TMPL_BITS == 32
|
|---|
| 66 | movzx eax, word [xBP + xCB + cbCurRetAddr + 2]
|
|---|
| 67 | push eax
|
|---|
| 68 | movzx eax, word [xBP + xCB + cbCurRetAddr]
|
|---|
| 69 | push eax
|
|---|
| 70 | call Bs3SelFar32ToFlat32NoClobber
|
|---|
| 71 | add esp, 8
|
|---|
| 72 | %else
|
|---|
| 73 | push xDX
|
|---|
| 74 | push xCX
|
|---|
| 75 |
|
|---|
| 76 | mov edx, ecx ; arg #2: selector
|
|---|
| 77 | shr edx, 16
|
|---|
| 78 | movzx ecx, cx ; arg #1: offset
|
|---|
| 79 | call Bs3SelFar32ToFlat32NoClobber
|
|---|
| 80 |
|
|---|
| 81 | pop xDX
|
|---|
| 82 | pop xCX
|
|---|
| 83 | %endif
|
|---|
| 84 | %endif
|
|---|
| 85 |
|
|---|
| 86 | .return:
|
|---|
| 87 | pop xBP
|
|---|
| 88 | BS3_HYBRID_RET
|
|---|
| 89 | BS3_PROC_END_CMN Bs3SelProtFar16DataToFlat
|
|---|
| 90 |
|
|---|
