MdePkg/Library/BaseLib/ia32/ARShiftU64.asm

;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation
; All rights reserved. This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution.  The full text of the license may be found at
; http://opensource.org/licenses/bsd-license.php
;
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
;
; Module Name:
;
;   ARShiftU64.asm
;
; Abstract:
;
;   64-bit arithmetic right shift function for IA-32
;
;------------------------------------------------------------------------------

    .686
    .model  flat,C
    .code

InternalMathARShiftU64  PROC
    mov     cl, [esp + 12]
    mov     eax, [esp + 8]
    cdq
    test    cl, 32
    cmovz   edx, eax
    cmovz   eax, [esp + 4]
    shrd    eax, edx, cl
    sar     edx, cl
    ret
InternalMathARShiftU64  ENDP

    END