blob: e681f791daaaf037ef721af57a62db1587e8ac34 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
; $Id: fmemset.asm $
;; @file
; Compiler support routines.
;
;
; Copyright (C) 2012-2023 Oracle and/or its affiliates.
;
; This file is part of VirtualBox base platform packages, as
; available from https://www.virtualbox.org.
;
; This program is free software; you can redistribute it and/or
; modify it under the terms of the GNU General Public License
; as published by the Free Software Foundation, in version 3 of the
; License.
;
; This program is distributed in the hope that it will be useful, but
; WITHOUT ANY WARRANTY; without even the implied warranty of
; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
; General Public License for more details.
;
; You should have received a copy of the GNU General Public License
; along with this program; if not, see <https://www.gnu.org/licenses>.
;
; SPDX-License-Identifier: GPL-3.0-only
;
;*******************************************************************************
;* Exported Symbols *
;*******************************************************************************
public _fmemset_
.8086
_TEXT segment public 'CODE' use16
assume cs:_TEXT
;;
; memset taking a far pointer.
;
; cx, es may be modified; di is preserved
;
; @returns dx:ax unchanged.
; @param dx:ax Pointer to the memory.
; @param bl The fill value.
; @param cx The number of bytes to fill.
;
_fmemset_:
push di
mov es, dx
mov di, ax
xchg al, bl
rep stosb
xchg al, bl
pop di
ret
_TEXT ends
end
|
