audk/MdePkg/Library/BaseLib/Ia32/LShiftU64.S

37 lines
1.0 KiB
ArmAsm

#------------------------------------------------------------------------------
#
# 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:
#
# LShiftU64.asm
#
# Abstract:
#
# 64-bit left shift function for IA-32
#
#------------------------------------------------------------------------------
.686:
#.MODEL flat,C
.code:
.global _InternalMathLShiftU64
_InternalMathLShiftU64:
movb 12(%esp), %cl
xorl %eax, %eax
movl 4(%esp), %edx
testb $32, %cl
cmovz %edx, %eax
cmovz 0x8(%esp), %edx
shld %cl,%eax,%edx
shl %cl, %eax
ret