audk/ArmPkg/Library/CompilerIntrinsicsLib/Arm/llsr.asm

46 lines
1.2 KiB
NASM

//------------------------------------------------------------------------------
//
// Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
// Copyright (c) 2018, Pete Batard. 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.
//
//------------------------------------------------------------------------------
EXPORT __aeabi_llsr
EXPORT __rt_srsh
AREA s___aeabi_llsr, CODE, READONLY, ARM
ARM
;
;VOID
;EFIAPI
;__aeabi_llsr (
; IN UINT64 Value,
; IN UINT32 Shift
;)
;
__aeabi_llsr
__rt_srsh
SUBS r3,r2,#0x20
BPL __aeabi_llsr_label1
RSB r3,r2,#0x20
LSR r0,r0,r2
ORR r0,r0,r1,LSL r3
LSR r1,r1,r2
BX lr
__aeabi_llsr_label1
LSR r0,r1,r3
MOV r1,#0
BX lr
END