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; $Id: __U8LS.asm $
;; @file
; Compiler support routines.
;
;
; Copyright (C) 2012-2019 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
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