audk/ArmPkg/Library/CompilerIntrinsicsLib/Arm/switch16.S

25 lines
487 B
ArmAsm

#/** @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(__switch16)
ldrh ip, [lr, #-1]
cmp r0, ip
add r0, lr, r0, lsl #1
ldrshcc r0, [r0, #1]
add ip, lr, ip, lsl #1
ldrshcs r0, [ip, #1]
add ip, lr, r0, lsl #1
bx ip