Syncboot/gnu-efi/lib/arm/llsr.S

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ArmAsm
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2019-07-21 14:22:32 +00:00
#------------------------------------------------------------------------------
#
# Copyright (c) 2013, ARM. 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.
#
#------------------------------------------------------------------------------
#include "edk2asm.h"
.text
.align 2
GCC_ASM_EXPORT(__aeabi_llsr)
#
#VOID
#EFIAPI
#__aeabi_llsr (
# IN VOID *Destination,
# IN VOID *Source,
# IN UINT32 Size
# );
#
ASM_PFX(__aeabi_llsr):
subs r3,r2,#0x20
bpl 1f
rsb r3,r2,#0x20
lsr r0,r0,r2
orr r0,r0,r1,lsl r3
lsr r1,r1,r2
bx lr
1:
lsr r0,r1,r3
mov r1,#0
bx lr