threeeye
bc1d038eac
Squashed backup commit (no shallow-clone history issues) of xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2 branch, upstream commit 9eece662e) plus all fixes applied to get everpal_defconfig building clean against a modern (GCC 15.2.0) toolchain -- see the previous commit message on the lineage-23.2 branch (also in this repo history is not available here since this is a squashed snapshot; full incremental history lives in the local DL380 checkout and the upstream GitHub remote). Upstream: https://github.com/xiaomi-mt6833-dev/kernel_xiaomi_mt6833 (lineage-23.2)
83 lines
1.2 KiB
ArmAsm
83 lines
1.2 KiB
ArmAsm
/*
|
|
* linux/arch/m32r/mm/page.S
|
|
*
|
|
* Clear/Copy page with CPU
|
|
*
|
|
* Copyright (C) 2004 The Free Software Initiative of Japan
|
|
*
|
|
* Written by Niibe Yutaka
|
|
*
|
|
* This file is subject to the terms and conditions of the GNU General Public
|
|
* License. See the file "COPYING" in the main directory of this archive
|
|
* for more details.
|
|
*
|
|
*/
|
|
.text
|
|
.global copy_page
|
|
/*
|
|
* copy_page (to, from)
|
|
*
|
|
* PAGE_SIZE = 4096-byte
|
|
* Cache line = 16-byte
|
|
* 16 * 256
|
|
*/
|
|
.align 4
|
|
copy_page:
|
|
ldi r2, #255
|
|
ld r3, @r0 /* cache line allocate */
|
|
ld r4, @r1+
|
|
ld r5, @r1+
|
|
ld r6, @r1+
|
|
ld r7, @r1+
|
|
.fillinsn
|
|
0:
|
|
st r4, @r0
|
|
st r5, @+r0
|
|
st r6, @+r0
|
|
st r7, @+r0
|
|
ld r4, @r1+
|
|
addi r0, #4
|
|
ld r5, @r1+
|
|
ld r6, @r1+
|
|
ld r7, @r1+
|
|
ld r3, @r0 /* cache line allocate */
|
|
addi r2, #-1
|
|
bnez r2, 0b
|
|
|
|
st r4, @r0
|
|
st r5, @+r0
|
|
st r6, @+r0
|
|
st r7, @+r0
|
|
jmp r14
|
|
|
|
.text
|
|
.global clear_page
|
|
/*
|
|
* clear_page (to)
|
|
*
|
|
* PAGE_SIZE = 4096-byte
|
|
* Cache line = 16-byte
|
|
* 16 * 256
|
|
*/
|
|
.align 4
|
|
clear_page:
|
|
ldi r2, #255
|
|
ldi r4, #0
|
|
ld r3, @r0 /* cache line allocate */
|
|
.fillinsn
|
|
0:
|
|
st r4, @r0
|
|
st r4, @+r0
|
|
st r4, @+r0
|
|
st r4, @+r0
|
|
addi r0, #4
|
|
ld r3, @r0 /* cache line allocate */
|
|
addi r2, #-1
|
|
bnez r2, 0b
|
|
|
|
st r4, @r0
|
|
st r4, @+r0
|
|
st r4, @+r0
|
|
st r4, @+r0
|
|
jmp r14
|