#------------------------------------------------------------------------------

#

# Copyright (c) 2009 - 2011, 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:

#

# MathRShiftU64.S

#

# Abstract:

#

# 64-bit Math Worker Function.

# Shifts a 64-bit unsigned value right by a certain number of bits.

#

#------------------------------------------------------------------------------

.686:

.code:

ASM_GLOBAL ASM_PFX(__ashrdi3)

#------------------------------------------------------------------------------

#

# void __cdecl __ashrdi3 (void)

#

#------------------------------------------------------------------------------

ASM_PFX(__ashrdi3):

#

# Checking: Only handle 64bit shifting or more

#

cmpb $64, %cl

jae _Exit

#

# Handle shifting between 0 and 31 bits

#

cmpb $32, %cl

jae More32

shrd %cl, %edx, %eax

shr %cl, %edx

ret

#

# Handle shifting of 32-63 bits

#

More32:

movl %edx, %eax

xor %edx, %edx

and $32, %cl

shr %cl, %eax

ret

#

# Invalid number (less then 32bits), return 0

#

_Exit:

xor %eax, %eax

xor %edx, %edx

ret