[mirror_edk2.git] / ArmPkg / Library / CompilerIntrinsicsLib / Arm / switch16.S

#/** @file\r
#  Compiler intrinsic for ARM compiler\r
#\r
#  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
#  SPDX-License-Identifier: BSD-2-Clause-Patent\r
#\r
#**/\r
#\r
\r
#include <AsmMacroIoLib.h>\r
\r
.syntax unified\r
\r
ASM_FUNC(__switch16)\r
    ldrh      ip, [lr, #-1]\r
    cmp       r0, ip\r
    add       r0, lr, r0, lsl #1\r
    ldrshcc   r0, [r0, #1]\r
    add       ip, lr, ip, lsl #1\r
    ldrshcs   r0, [ip, #1]\r
    add       ip, lr, r0, lsl #1\r
    bx        ip\r
\r
\r
Commit	Line	Data
1e57a462	1	#/** @file\r
	2	# Compiler intrinsic for ARM compiler\r
	3	#\r
	4	# Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
4059386c	5	# SPDX-License-Identifier: BSD-2-Clause-Patent\r
1e57a462	6	#\r
1e57a462	7	#**/\r
3402aac7	8	#\r
1e57a462	9	\r
903e3124	10	#include <AsmMacroIoLib.h>\r
1e57a462	11	\r
903e3124	12	.syntax unified\r
1e57a462	13	\r
903e3124	14	ASM_FUNC(__switch16)\r
1e57a462	15	ldrh ip, [lr, #-1]\r
	16	cmp r0, ip\r
	17	add r0, lr, r0, lsl #1\r
1a0db791	18	ldrshcc r0, [r0, #1]\r
1e57a462	19	add ip, lr, ip, lsl #1\r
1a0db791	20	ldrshcs r0, [ip, #1]\r
1e57a462	21	add ip, lr, r0, lsl #1\r
	22	bx ip\r
	23	\r
	24	\r