linux/arch/nds32/lib/copy_page.S

41 lines
748 B
ArmAsm

// SPDX-License-Identifier: GPL-2.0
// Copyright (C) 2005-2017 Andes Technology Corporation
#include <linux/linkage.h>
#include <asm/export.h>
#include <asm/page.h>
.text
ENTRY(copy_page)
pushm $r2, $r10
movi $r2, PAGE_SIZE >> 5
.Lcopy_loop:
lmw.bim $r3, [$r1], $r10
smw.bim $r3, [$r0], $r10
subi45 $r2, #1
bnez38 $r2, .Lcopy_loop
popm $r2, $r10
ret
ENDPROC(copy_page)
EXPORT_SYMBOL(copy_page)
ENTRY(clear_page)
pushm $r1, $r9
movi $r1, PAGE_SIZE >> 5
movi55 $r2, #0
movi55 $r3, #0
movi55 $r4, #0
movi55 $r5, #0
movi55 $r6, #0
movi55 $r7, #0
movi55 $r8, #0
movi55 $r9, #0
.Lclear_loop:
smw.bim $r2, [$r0], $r9
subi45 $r1, #1
bnez38 $r1, .Lclear_loop
popm $r1, $r9
ret
ENDPROC(clear_page)
EXPORT_SYMBOL(clear_page)