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; $Id: fmemcpy.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 _fmemcpy_
.8086
_TEXT segment public 'CODE' use16
assume cs:_TEXT
;;
; memcpy taking far pointers.
;
; cx, es may be modified; si, di are preserved
;
; @returns dx:ax unchanged.
; @param dx:ax Pointer to the destination memory.
; @param cx:bx Pointer to the source memory.
; @param sp+2 The number of bytes to copy (dw).
;
_fmemcpy_:
push bp
mov bp, sp
push di
push ds
push si
mov es, dx
mov di, ax
mov ds, cx
mov si, bx
mov cx, [bp + 4]
rep movsb
pop si
pop ds
pop di
mov sp, bp
pop bp
ret
_TEXT ends
end
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