1
linux/arch/riscv/lib/tishift.S

77 lines
1.0 KiB
ArmAsm
Raw Permalink Normal View History

/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2018 Free Software Foundation, Inc.
*/
#include <linux/linkage.h>
#include <linux/export.h>
SYM_FUNC_START(__lshrti3)
beqz a2, .L1
li a5,64
sub a5,a5,a2
sext.w a4,a5
blez a5, .L2
sext.w a2,a2
srl a0,a0,a2
sll a4,a1,a4
srl a2,a1,a2
or a0,a0,a4
mv a1,a2
.L1:
ret
.L2:
negw a0,a4
li a2,0
srl a0,a1,a0
mv a1,a2
ret
SYM_FUNC_END(__lshrti3)
EXPORT_SYMBOL(__lshrti3)
SYM_FUNC_START(__ashrti3)
beqz a2, .L3
li a5,64
sub a5,a5,a2
sext.w a4,a5
blez a5, .L4
sext.w a2,a2
srl a0,a0,a2
sll a4,a1,a4
sra a2,a1,a2
or a0,a0,a4
mv a1,a2
.L3:
ret
.L4:
negw a0,a4
srai a2,a1,0x3f
sra a0,a1,a0
mv a1,a2
ret
SYM_FUNC_END(__ashrti3)
EXPORT_SYMBOL(__ashrti3)
SYM_FUNC_START(__ashlti3)
beqz a2, .L5
li a5,64
sub a5,a5,a2
sext.w a4,a5
blez a5, .L6
sext.w a2,a2
sll a1,a1,a2
srl a4,a0,a4
sll a2,a0,a2
or a1,a1,a4
mv a0,a2
.L5:
ret
.L6:
negw a1,a4
li a2,0
sll a1,a0,a1
mv a0,a2
ret
SYM_FUNC_END(__ashlti3)
EXPORT_SYMBOL(__ashlti3)