[mirror_ubuntu-jammy-kernel.git] / arch / riscv / lib / udivdi3.S

/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2016-2017 Free Software Foundation, Inc.
 */

#include <linux/linkage.h>

ENTRY(__udivdi3)
	mv	a2, a1
	mv	a1, a0
	li	a0, -1
	beqz	a2, .L5
	li	a3, 1
	bgeu	a2, a1, .L2
.L1:
	blez	a2, .L2
	slli	a2, a2, 1
	slli	a3, a3, 1
	bgtu	a1, a2, .L1
.L2:
	li	a0, 0
.L3:
	bltu	a1, a2, .L4
	sub	a1, a1, a2
	or	a0, a0, a3
.L4:
	srli	a3, a3, 1
	srli	a2, a2, 1
	bnez	a3, .L3
.L5:
	ret
ENDPROC(__udivdi3)
Commit	Line	Data
50acfb2b	1	/* SPDX-License-Identifier: GPL-2.0-only */
5d8544e2 PD	2	/*
5d8544e2 PD	3	* Copyright (C) 2016-2017 Free Software Foundation, Inc.
5d8544e2 PD	4	*/
5d8544e2 PD	5
a266cdba OJ	6	#include <linux/linkage.h>
	7
	8	ENTRY(__udivdi3)
	9	mv a2, a1
	10	mv a1, a0
	11	li a0, -1
	12	beqz a2, .L5
	13	li a3, 1
	14	bgeu a2, a1, .L2
5d8544e2	15	.L1:
a266cdba OJ	16	blez a2, .L2
	17	slli a2, a2, 1
	18	slli a3, a3, 1
	19	bgtu a1, a2, .L1
5d8544e2	20	.L2:
a266cdba	21	li a0, 0
5d8544e2	22	.L3:
a266cdba OJ	23	bltu a1, a2, .L4
	24	sub a1, a1, a2
	25	or a0, a0, a3
5d8544e2	26	.L4:
a266cdba OJ	27	srli a3, a3, 1
	28	srli a2, a2, 1
	29	bnez a3, .L3
5d8544e2	30	.L5:
a266cdba OJ	31	ret
a266cdba OJ	32	ENDPROC(__udivdi3)