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+; $Id: bs3-wc16-U8DR.asm $
+;; @file
+; BS3Kit - 16-bit Watcom C/C++, 64-bit unsigned integer modulo.
+;
+
+;
+; Copyright (C) 2007-2023 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>.
+;
+; The contents of this file may alternatively be used under the terms
+; of the Common Development and Distribution License Version 1.0
+; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
+; in the VirtualBox distribution, in which case the provisions of the
+; CDDL are applicable instead of those of the GPL.
+;
+; You may elect to license modified versions of this file under the
+; terms and conditions of either the GPL or the CDDL or both.
+;
+; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
+;
+
+%include "bs3kit-template-header.mac"
+
+BS3_EXTERN_CMN Bs3UInt64Div
+
+
+;;
+; 64-bit unsigned integer modulo, SS variant.
+;
+; @returns ax:bx:cx:dx reminder. (AX is the most significant, DX the least)
+; @param ax:bx:cx:dx Dividend.
+; @param [ss:si] Divisor
+;
+; @uses Nothing.
+;
+global $_?U8DR
+$_?U8DR:
+ push es
+ push ss
+ pop es
+%ifdef ASM_MODEL_FAR_CODE
+ push cs
+%endif
+ call $_?U8DRE
+ pop es
+%ifdef ASM_MODEL_FAR_CODE
+ retf
+%else
+ ret
+%endif
+
+;;
+; 64-bit unsigned integer modulo, ES variant.
+;
+; @returns ax:bx:cx:dx reminder. (AX is the most significant, DX the least)
+; @param ax:bx:cx:dx Dividend.
+; @param [es:si] Divisor
+;
+; @uses Nothing.
+;
+global $_?U8DRE
+$_?U8DRE:
+ push ds
+ push es
+
+ ;
+ ; Convert to a C __cdecl call - not doing this in assembly.
+ ;
+
+ ; Set up a frame of sorts, allocating 16 bytes for the result buffer.
+ push bp
+ sub sp, 10h
+ mov bp, sp
+
+ ; Pointer to the return buffer.
+ push ss
+ push bp
+ add bp, 10h ; Correct bp.
+
+ ; The divisor.
+ push word [es:si + 6]
+ push word [es:si + 4]
+ push word [es:si + 2]
+ push word [es:si]
+
+ ; The dividend.
+ push ax
+ push bx
+ push cx
+ push dx
+
+ call Bs3UInt64Div
+
+ ; Load the reminder.
+ mov ax, [bp - 10h + 8 + 6]
+ mov bx, [bp - 10h + 8 + 4]
+ mov cx, [bp - 10h + 8 + 2]
+ mov dx, [bp - 10h + 8]
+
+ mov sp, bp
+ pop bp
+ pop es
+ pop ds
+%ifdef ASM_MODEL_FAR_CODE
+ retf
+%else
+ ret
+%endif
+