; $Id: __U8LS.asm 82968 2020-02-04 10:35:17Z vboxsync $
;; @file
; Compiler support routines.
;

;
; Copyright (C) 2012-2020 Oracle Corporation
;
; This file is part of VirtualBox Open Source Edition (OSE), as
; available from http://www.virtualbox.org. This file is free software;
; you can redistribute it and/or modify it under the terms of the GNU
; General Public License (GPL) as published by the Free Software
; Foundation, in version 2 as it comes in the "COPYING" file of the
; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
;


;*******************************************************************************
;*  Exported Symbols                                                           *
;*******************************************************************************
public          __U8LS


                .8086

_TEXT           segment public 'CODE' use16
                assume cs:_TEXT

;;
; 64-bit left shift.
;
; @param    ax:bx:cx:dx Value. (AX is the most significant, DX the least)
; @param    si          Shift count.
; @returns  ax:bx:cx:dx Shifted value.
; si is zeroed
;
__U8LS:

                test    si, si
                jz      u8ls_quit
u8ls_rot:
                shl     dx, 1
                rcl     cx, 1
                rcl     bx, 1
                rcl     ax, 1
                dec     si
                jnz     u8ls_rot
u8ls_quit:
                ret


_TEXT           ends
                end

