[linux.git] / arch / riscv / lib / tishift.S

/* 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)
Commit	Line	Data
50acfb2b	1	/* SPDX-License-Identifier: GPL-2.0-only */
a89757da AG	2	/*
a89757da AG	3	* Copyright (C) 2018 Free Software Foundation, Inc.
a89757da	4	*/
a266cdba OJ	5
a266cdba OJ	6	#include <linux/linkage.h>
62694797	7	#include <linux/export.h>
a266cdba	8
fc585d4a	9	SYM_FUNC_START(__lshrti3)
a266cdba OJ	10	beqz a2, .L1
	11	li a5,64
	12	sub a5,a5,a2
a266cdba OJ	13	sext.w a4,a5
	14	blez a5, .L2
	15	sext.w a2,a2
a266cdba	16	srl a0,a0,a2
fc585d4a OJ	17	sll a4,a1,a4
fc585d4a OJ	18	srl a2,a1,a2
a266cdba	19	or a0,a0,a4
fc585d4a	20	mv a1,a2
a89757da	21	.L1:
a266cdba	22	ret
a89757da	23	.L2:
fc585d4a OJ	24	negw a0,a4
	25	li a2,0
	26	srl a0,a1,a0
	27	mv a1,a2
	28	ret
	29	SYM_FUNC_END(__lshrti3)
	30	EXPORT_SYMBOL(__lshrti3)
	31
	32	SYM_FUNC_START(__ashrti3)
	33	beqz a2, .L3
	34	li a5,64
	35	sub a5,a5,a2
	36	sext.w a4,a5
	37	blez a5, .L4
	38	sext.w a2,a2
	39	srl a0,a0,a2
	40	sll a4,a1,a4
	41	sra a2,a1,a2
	42	or a0,a0,a4
	43	mv a1,a2
	44	.L3:
	45	ret
	46	.L4:
	47	negw a0,a4
	48	srai a2,a1,0x3f
	49	sra a0,a1,a0
	50	mv a1,a2
	51	ret
	52	SYM_FUNC_END(__ashrti3)
	53	EXPORT_SYMBOL(__ashrti3)
	54
	55	SYM_FUNC_START(__ashlti3)
	56	beqz a2, .L5
	57	li a5,64
	58	sub a5,a5,a2
	59	sext.w a4,a5
	60	blez a5, .L6
	61	sext.w a2,a2
	62	sll a1,a1,a2
	63	srl a4,a0,a4
	64	sll a2,a0,a2
	65	or a1,a1,a4
	66	mv a0,a2
	67	.L5:
	68	ret
	69	.L6:
	70	negw a1,a4
	71	li a2,0
	72	sll a1,a0,a1
	73	mv a0,a2
a266cdba	74	ret
fc585d4a OJ	75	SYM_FUNC_END(__ashlti3)
fc585d4a OJ	76	EXPORT_SYMBOL(__ashlti3)