/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Copyright (C) 2020 Loongson Technology Corporation Limited
 */
#include <linux/linkage.h>
#include <asm/asm.h>
#include <asm/export.h>
#include <asm/page.h>
#include <asm/regdef.h>

	.align 5
SYM_FUNC_START(clear_page)
	lu12i.w  t0, 1 << (PAGE_SHIFT - 12)
	add.d    t0, t0, a0
1:
	st.d     zero, a0, 0
	st.d     zero, a0, 8
	st.d     zero, a0, 16
	st.d     zero, a0, 24
	st.d     zero, a0, 32
	st.d     zero, a0, 40
	st.d     zero, a0, 48
	st.d     zero, a0, 56
	addi.d   a0,   a0, 128
	st.d     zero, a0, -64
	st.d     zero, a0, -56
	st.d     zero, a0, -48
	st.d     zero, a0, -40
	st.d     zero, a0, -32
	st.d     zero, a0, -24
	st.d     zero, a0, -16
	st.d     zero, a0, -8
	bne      t0,   a0, 1b

	jirl     $r0, ra, 0
SYM_FUNC_END(clear_page)
EXPORT_SYMBOL(clear_page)

.align 5
SYM_FUNC_START(copy_page)
	lu12i.w  t8, 1 << (PAGE_SHIFT - 12)
	add.d    t8, t8, a0
1:
	ld.d     t0, a1,  0
	ld.d     t1, a1,  8
	ld.d     t2, a1,  16
	ld.d     t3, a1,  24
	ld.d     t4, a1,  32
	ld.d     t5, a1,  40
	ld.d     t6, a1,  48
	ld.d     t7, a1,  56

	st.d     t0, a0,  0
	st.d     t1, a0,  8
	ld.d     t0, a1,  64
	ld.d     t1, a1,  72
	st.d     t2, a0,  16
	st.d     t3, a0,  24
	ld.d     t2, a1,  80
	ld.d     t3, a1,  88
	st.d     t4, a0,  32
	st.d     t5, a0,  40
	ld.d     t4, a1,  96
	ld.d     t5, a1,  104
	st.d     t6, a0,  48
	st.d     t7, a0,  56
	ld.d     t6, a1,  112
	ld.d     t7, a1,  120
	addi.d   a0, a0,  128
	addi.d   a1, a1,  128

	st.d     t0, a0,  -64
	st.d     t1, a0,  -56
	st.d     t2, a0,  -48
	st.d     t3, a0,  -40
	st.d     t4, a0,  -32
	st.d     t5, a0,  -24
	st.d     t6, a0,  -16
	st.d     t7, a0,  -8

	bne      t8, a0, 1b
	jirl     $r0, ra, 0
SYM_FUNC_END(copy_page)
EXPORT_SYMBOL(copy_page)
