blob: 31df0d6768b460e11eed5a8db59d3b548b914f1a (
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 - 2008, 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:
#
# LShiftU64.S
#
# Abstract:
#
# 64-bit left shift function for IA-32
#
#------------------------------------------------------------------------------
ASM_GLOBAL ASM_PFX(InternalMathLShiftU64)
#------------------------------------------------------------------------------
# UINT64
# EFIAPI
# InternalMathLShiftU64 (
# IN UINT64 Operand,
# IN UINTN Count
# );
#------------------------------------------------------------------------------
ASM_PFX(InternalMathLShiftU64):
movb 12(%esp), %cl
xorl %eax, %eax
movl 4(%esp), %edx
testb $32, %cl # Count >= 32?
cmovz %edx, %eax
cmovz 0x8(%esp), %edx
shld %cl, %eax, %edx
shl %cl, %eax
ret
|
