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

40 lines
1017 B
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
#
#------------------------------------------------------------------------------
.global _LShiftU64
_LShiftU64:
movb 12(%esp),%cl
xorl %eax,%eax
movl 4(%esp),%edx
testb $32,%cl
cmovz %edx, %eax
cmovz 8(%esp), %edx
shldl %cl,%eax,%edx
shll %cl,%eax
ret