xref: /src/sys/external/bsd/gnu-efi/dist/lib/arm/llsl.S

/*	$NetBSD: llsl.S,v 1.1 2018/08/16 18:17:47 jmcneill Exp $	*/

#------------------------------------------------------------------------------
#
# 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_llsl)

#
#VOID
#EFIAPI
#__aeabi_llsl (
# IN  VOID    *Destination,
# IN  VOID    *Source,
# IN  UINT32  Size
# );
#
ASM_PFX(__aeabi_llsl):
    subs     r3,r2,#0x20
    bpl      1f
    rsb      r3,r2,#0x20
    lsl      r1,r1,r2
    orr      r1,r1,r0,lsr r3
    lsl      r0,r0,r2
    bx       lr
1:
    lsl      r1,r0,r3
    mov      r0,#0
    bx       lr