VirtualBox

source: vbox/trunk/src/VBox/Devices/BiosCommonCode/fmemset.asm@ 86605

Last change on this file since 86605 was 82968, checked in by vboxsync, 5 years ago

Copyright year updates by scm.

  • 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 82968 2020-02-04 10:35:17Z vboxsync $
2;; @file
3; Compiler support routines.
4;
5
6;
7; Copyright (C) 2012-2020 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
18
19;*******************************************************************************
20;* Exported Symbols *
21;*******************************************************************************
22public _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
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