[mirror_edk2.git] / ArmPkg / Library / CompilerIntrinsicsLib / Arm / switch32.S

#/** @file\r
#  Compiler intrinsic for ARM compiler\r
#\r
#  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r
#  This program and the accompanying materials\r
#  are licensed and made available under the terms and conditions of the BSD License\r
#  which accompanies this distribution.  The full text of the license may be found at\r
#  http://opensource.org/licenses/bsd-license.php\r
#\r
#  THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
#  WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.;\r
#\r
#**/\r
#\r
\r
#include <AsmMacroIoLib.h>\r
\r
.syntax unified\r
\r
ASM_FUNC(__switch32)\r
    ldr     ip, [lr, #-1]\r
    cmp     r0, ip\r
    add     r0, lr, r0, lsl #2\r
    ldrcc   r0, [r0, #3]\r
    add     ip, lr, ip, lsl #2\r
    ldrcs   r0, [ip, #3]\r
    add     ip, lr, r0\r
    bx      ip\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
	5	# This program and the accompanying materials\r
	6	# are licensed and made available under the terms and conditions of the BSD License\r
	7	# which accompanies this distribution. The full text of the license may be found at\r
	8	# http://opensource.org/licenses/bsd-license.php\r
	9	#\r
	10	# THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
	11	# WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.;\r
	12	#\r
	13	#**/\r
3402aac7	14	#\r
1e57a462	15	\r
903e3124	16	#include <AsmMacroIoLib.h>\r
1e57a462	17	\r
903e3124	18	.syntax unified\r
1e57a462	19	\r
903e3124	20	ASM_FUNC(__switch32)\r
1e57a462	21	ldr ip, [lr, #-1]\r
	22	cmp r0, ip\r
	23	add r0, lr, r0, lsl #2\r
	24	ldrcc r0, [r0, #3]\r
	25	add ip, lr, ip, lsl #2\r
	26	ldrcs r0, [ip, #3]\r
	27	add ip, lr, r0\r
	28	bx ip\r
	29	\r