mirror of https://github.com/acidanthera/audk.git
49 lines
1.4 KiB
NASM
49 lines
1.4 KiB
NASM
;------------------------------------------------------------------------------
|
|
;
|
|
; Copyright (c) 2006 - 2015, Intel Corporation. All rights reserved.<BR>
|
|
; 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
|
|
|
|
;------------------------------------------------------------------------------
|
|
; UINT64
|
|
; EFIAPI
|
|
; InternalMathARShiftU64 (
|
|
; IN UINT64 Operand,
|
|
; IN UINTN Count
|
|
; );
|
|
;------------------------------------------------------------------------------
|
|
InternalMathARShiftU64 PROC
|
|
mov cl, [esp + 12]
|
|
mov eax, [esp + 8]
|
|
cdq
|
|
test cl, 32
|
|
jnz @F
|
|
mov edx, eax
|
|
mov eax, [esp + 4]
|
|
@@:
|
|
shrd eax, edx, cl
|
|
sar edx, cl
|
|
ret
|
|
InternalMathARShiftU64 ENDP
|
|
|
|
END
|