|
Last change
on this file since 62518 was 62518, checked in by vboxsync, 8 years ago |
|
(C) 2016
|
-
Property svn:eol-style
set to
native
-
Property svn:keywords
set to
Author Date Id Revision
|
|
File size:
1.4 KB
|
| Line | |
|---|
| 1 | ; $Id: fmemset.asm 62518 2016-07-22 19:14:29Z vboxsync $
|
|---|
| 2 | ;; @file
|
|---|
| 3 | ; Compiler support routines.
|
|---|
| 4 | ;
|
|---|
| 5 |
|
|---|
| 6 | ;
|
|---|
| 7 | ; Copyright (C) 2012-2016 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 |
|
|---|
| 18 |
|
|---|
| 19 | ;*******************************************************************************
|
|---|
| 20 | ;* Exported Symbols *
|
|---|
| 21 | ;*******************************************************************************
|
|---|
| 22 | public _fmemset_
|
|---|
| 23 |
|
|---|
| 24 |
|
|---|
| 25 | .8086
|
|---|
| 26 |
|
|---|
| 27 | _TEXT segment public 'CODE' use16
|
|---|
| 28 | assume cs:_TEXT
|
|---|
| 29 |
|
|---|
| 30 |
|
|---|
| 31 | ;;
|
|---|
| 32 | ; memset taking a far pointer.
|
|---|
| 33 | ;
|
|---|
| 34 | ; cx, es may be modified; di is preserved
|
|---|
| 35 | ;
|
|---|
| 36 | ; @returns dx:ax unchanged.
|
|---|
| 37 | ; @param dx:ax Pointer to the memory.
|
|---|
| 38 | ; @param bl The fill value.
|
|---|
| 39 | ; @param cx The number of bytes to fill.
|
|---|
| 40 | ;
|
|---|
| 41 | _fmemset_:
|
|---|
| 42 | push di
|
|---|
| 43 |
|
|---|
| 44 | mov es, dx
|
|---|
| 45 | mov di, ax
|
|---|
| 46 | xchg al, bl
|
|---|
| 47 | rep stosb
|
|---|
| 48 | xchg al, bl
|
|---|
| 49 |
|
|---|
| 50 | pop di
|
|---|
| 51 | ret
|
|---|
| 52 |
|
|---|
| 53 | _TEXT ends
|
|---|
| 54 | end
|
|---|
| 55 |
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
