summaryrefslogtreecommitdiffstats
path: root/ArmPkg/Library/CompilerIntrinsicsLib/Arm/switch8.S
blob: aea048f4fba2cf5b9808e43487e74dd25f80d37f (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
#/** @file
#  Compiler intrinsic for ARM compiler
#
#  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
#  SPDX-License-Identifier: BSD-2-Clause-Patent
#
#**/
#

#include <AsmMacroIoLib.h>

.syntax unified

ASM_FUNC(__switch8)
    ldrb      ip, [lr, #-1]
    cmp       r0, ip
    ldrsbcc   r0, [lr, r0]
    ldrsbcs   r0, [lr, ip]
    add       ip, lr, r0, lsl #1
    bx        ip