summaryrefslogtreecommitdiff
path: root/arch/c6x/lib/divremi.S
blob: 575fc57a8a7673e23eb9232c6940cb2d873bf6db (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
;; SPDX-License-Identifier: GPL-2.0-or-later
;;  Copyright 2010  Free Software Foundation, Inc.
;;  Contributed by Bernd Schmidt <bernds@codesourcery.com>.
;;

#include <linux/linkage.h>

	.text
ENTRY(__c6xabi_divremi)
	stw	.d2t2	B3, *B15--[2]
||	cmpgt	.l1	0, A4, A1
||	cmpgt	.l2	0, B4, B2
||	mv	.s1	A4, A5
||	call	.s2	__c6xabi_divu

   [A1]	neg	.l1	A4, A4
|| [B2]	neg	.l2	B4, B4
||	xor	.s2x	B2, A1, B0
||	mv	.d2	B4, B2

   [B0]	addkpc	.s2	_divu_ret_1, B3, 1
  [!B0] addkpc	.s2	_divu_ret_2, B3, 1
	nop	2
_divu_ret_1:
	neg	.l1	A4, A4
_divu_ret_2:
	ldw	.d2t2	*++B15[2], B3

	mpy32	.m1x	A4, B2, A6
	nop		3
	ret	.s2	B3
	sub	.l1	A5, A6, A5
	nop	4
ENDPROC(__c6xabi_divremi)