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

30 lines
908 B
NASM

///------------------------------------------------------------------------------
//
// Copyright (c) 2008 - 2009, Apple Inc. 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 __ARM_switch8
AREA ArmSwitch, CODE, READONLY
__ARM_switch8
LDRB r12,[lr,#-1]
CMP r3,r12
LDRBCC r3,[lr,r3]
LDRBCS r3,[lr,r12]
ADD r12,lr,r3,LSL #1
BX r12
END