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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/arch/riscv/lib/tishift.S
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/* SPDX-License-Identifier: GPL-2.0-only */

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/*

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 * Copyright (C) 2018 Free Software Foundation, Inc.

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 */

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#include <linux/linkage.h>

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#include <linux/export.h>

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SYM_FUNC_START(__lshrti3)

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	beqz	a2, .L1

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	li	a5,64

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	sub	a5,a5,a2

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	sext.w	a4,a5

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	blez	a5, .L2

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	sext.w	a2,a2

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	srl	a0,a0,a2

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	sll	a4,a1,a4

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	srl	a2,a1,a2

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	or	a0,a0,a4

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	mv	a1,a2

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.L1:

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	ret

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.L2:

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	negw	a0,a4

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	li	a2,0

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	srl	a0,a1,a0

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	mv	a1,a2

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	ret

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SYM_FUNC_END(__lshrti3)

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EXPORT_SYMBOL(__lshrti3)

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SYM_FUNC_START(__ashrti3)

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	beqz	a2, .L3

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	li	a5,64

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	sub	a5,a5,a2

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	sext.w	a4,a5

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	blez	a5, .L4

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	sext.w	a2,a2

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	srl	a0,a0,a2

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	sll	a4,a1,a4

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	sra	a2,a1,a2

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	or	a0,a0,a4

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	mv	a1,a2

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.L3:

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	ret

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.L4:

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	negw	a0,a4

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	srai	a2,a1,0x3f

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	sra	a0,a1,a0

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	mv	a1,a2

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	ret

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SYM_FUNC_END(__ashrti3)

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EXPORT_SYMBOL(__ashrti3)

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SYM_FUNC_START(__ashlti3)

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	beqz	a2, .L5

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	li	a5,64

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	sub	a5,a5,a2

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	sext.w	a4,a5

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	blez	a5, .L6

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	sext.w	a2,a2

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	sll	a1,a1,a2

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	srl	a4,a0,a4

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	sll	a2,a0,a2

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	or	a1,a1,a4

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	mv	a0,a2

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.L5:

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	ret

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.L6:

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	negw	a1,a4

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	li	a2,0

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	sll	a1,a0,a1

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	mv	a0,a2

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	ret

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SYM_FUNC_END(__ashlti3)

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EXPORT_SYMBOL(__ashlti3)

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