xref: /OK3568_Linux_fs/kernel/arch/nds32/lib/copy_page.S (revision 4882a59341e53eb6f0b4789bf948001014eff981)
1*4882a593Smuzhiyun// SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun// Copyright (C) 2005-2017 Andes Technology Corporation
3*4882a593Smuzhiyun
4*4882a593Smuzhiyun#include <linux/linkage.h>
5*4882a593Smuzhiyun#include <asm/export.h>
6*4882a593Smuzhiyun#include <asm/page.h>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun	.text
9*4882a593SmuzhiyunENTRY(copy_page)
10*4882a593Smuzhiyun	pushm	$r2, $r10
11*4882a593Smuzhiyun	movi	$r2, PAGE_SIZE >> 5
12*4882a593Smuzhiyun.Lcopy_loop:
13*4882a593Smuzhiyun	lmw.bim	$r3, [$r1], $r10
14*4882a593Smuzhiyun	smw.bim	$r3, [$r0], $r10
15*4882a593Smuzhiyun	subi45	$r2, #1
16*4882a593Smuzhiyun	bnez38	$r2, .Lcopy_loop
17*4882a593Smuzhiyun	popm	$r2, $r10
18*4882a593Smuzhiyun	ret
19*4882a593SmuzhiyunENDPROC(copy_page)
20*4882a593SmuzhiyunEXPORT_SYMBOL(copy_page)
21*4882a593Smuzhiyun
22*4882a593SmuzhiyunENTRY(clear_page)
23*4882a593Smuzhiyun	pushm	$r1, $r9
24*4882a593Smuzhiyun	movi	$r1, PAGE_SIZE >> 5
25*4882a593Smuzhiyun	movi55	$r2, #0
26*4882a593Smuzhiyun	movi55	$r3, #0
27*4882a593Smuzhiyun	movi55	$r4, #0
28*4882a593Smuzhiyun	movi55	$r5, #0
29*4882a593Smuzhiyun	movi55	$r6, #0
30*4882a593Smuzhiyun	movi55	$r7, #0
31*4882a593Smuzhiyun	movi55	$r8, #0
32*4882a593Smuzhiyun	movi55	$r9, #0
33*4882a593Smuzhiyun.Lclear_loop:
34*4882a593Smuzhiyun	smw.bim	$r2, [$r0], $r9
35*4882a593Smuzhiyun	subi45	$r1, #1
36*4882a593Smuzhiyun	bnez38	$r1, .Lclear_loop
37*4882a593Smuzhiyun	popm	$r1, $r9
38*4882a593Smuzhiyun        ret
39*4882a593SmuzhiyunENDPROC(clear_page)
40*4882a593SmuzhiyunEXPORT_SYMBOL(clear_page)
41