85 lines
1.5 KiB
ArmAsm
85 lines
1.5 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Copyright (C) 2020-2022 Loongson Technology Corporation Limited
|
|
*/
|
|
#include <linux/export.h>
|
|
#include <linux/linkage.h>
|
|
#include <asm/asm.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
|
|
|
|
jr ra
|
|
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
|
|
jr ra
|
|
SYM_FUNC_END(copy_page)
|
|
EXPORT_SYMBOL(copy_page)
|