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

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//------------------------------------------------------------------------------
//
// Copyright (c) 2008-2009 Apple Inc. All rights reserved.
//
// 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.
//
//------------------------------------------------------------------------------
EXPORT __ARM_ll_mullu
EXPORT __aeabi_lmul
AREA Math, CODE, READONLY
;
;INT64
;EFIAPI
;__aeabi_lmul (
; IN INT64 Multiplicand
; IN INT32 Multiplier
; );
;
__ARM_ll_mullu
mov r3, #0
// Make upper part of INT64 Multiplier 0 and use __aeabi_lmul
;
;INT64
;EFIAPI
;__aeabi_lmul (
; IN INT64 Multiplicand
; IN INT64 Multiplier
; );
;
__aeabi_lmul
stmdb sp!, {lr}
mov lr, r0
umull r0, ip, r2, lr
mla r1, r2, r1, ip
mla r1, r3, lr, r1
ldmia sp!, {pc}
END