blob: 86c536b66949f2184811931df97e5e2aedd59456 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
#------------------------------------------------------------------------------
#
# 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
#
#------------------------------------------------------------------------------
.globl _InternalMathARShiftU64
#------------------------------------------------------------------------------
# UINT64
# EFIAPI
# InternalMathARShiftU64 (
# IN UINT64 Operand,
# IN UINTN Count
# );
#------------------------------------------------------------------------------
_InternalMathARShiftU64:
movb 12(%esp), %cl
movl 8(%esp), %eax
cltd
testb $32, %cl
cmovz %eax, %edx
cmovz 4(%esp), %eax
shrdl %cl, %edx, %eax
sar %cl, %edx
ret
|
