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

#------------------------------------------------------------------------------\r
#\r
# Copyright (c) 2013, ARM. All rights reserved.<BR>\r
#\r
# SPDX-License-Identifier: BSD-2-Clause-Patent\r
#\r
#------------------------------------------------------------------------------\r
\r
#include <AsmMacroIoLib.h>\r
\r
#VOID\r
#EFIAPI\r
#__aeabi_llsr (\r
# IN  VOID    *Destination,\r
# IN  VOID    *Source,\r
# IN  UINT32  Size\r
# );\r
#\r
ASM_FUNC(__aeabi_llsr)\r
    subs     r3,r2,#0x20\r
    bpl      1f\r
    rsb      r3,r2,#0x20\r
    lsr      r0,r0,r2\r
    orr      r0,r0,r1,lsl r3\r
    lsr      r1,r1,r2\r
    bx       lr\r
1:\r
    lsr      r0,r1,r3\r
    mov      r1,#0\r
    bx       lr\r
Commit	Line	Data
76aee8f4	1	#------------------------------------------------------------------------------\r
	2	#\r
	3	# Copyright (c) 2013, ARM. All rights reserved.<BR>\r
	4	#\r
4059386c	5	# SPDX-License-Identifier: BSD-2-Clause-Patent\r
76aee8f4	6	#\r
	7	#------------------------------------------------------------------------------\r
	8	\r
903e3124	9	#include <AsmMacroIoLib.h>\r
76aee8f4	10	\r
76aee8f4	11	#VOID\r
	12	#EFIAPI\r
	13	#__aeabi_llsr (\r
	14	# IN VOID *Destination,\r
	15	# IN VOID *Source,\r
	16	# IN UINT32 Size\r
	17	# );\r
	18	#\r
903e3124	19	ASM_FUNC(__aeabi_llsr)\r
76aee8f4	20	subs r3,r2,#0x20\r
	21	bpl 1f\r
	22	rsb r3,r2,#0x20\r
	23	lsr r0,r0,r2\r
	24	orr r0,r0,r1,lsl r3\r
	25	lsr r1,r1,r2\r
	26	bx lr\r
	27	1:\r
	28	lsr r0,r1,r3\r
	29	mov r1,#0\r
	30	bx lr\r