1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Copyright (C) 2020-2022 Loongson Technology Corporation Limited 4 */ 5#include <linux/export.h> 6#include <linux/linkage.h> 7#include <asm/asm.h> 8#include <asm/page.h> 9#include <asm/regdef.h> 10 11 .align 5 12SYM_FUNC_START(clear_page) 13 lu12i.w t0, 1 << (PAGE_SHIFT - 12) 14 PTR_ADD t0, t0, a0 151: 16 LONG_S zero, a0, (LONGSIZE * 0) 17 LONG_S zero, a0, (LONGSIZE * 1) 18 LONG_S zero, a0, (LONGSIZE * 2) 19 LONG_S zero, a0, (LONGSIZE * 3) 20 LONG_S zero, a0, (LONGSIZE * 4) 21 LONG_S zero, a0, (LONGSIZE * 5) 22 LONG_S zero, a0, (LONGSIZE * 6) 23 LONG_S zero, a0, (LONGSIZE * 7) 24 PTR_ADDI a0, a0, (LONGSIZE * 16) 25 LONG_S zero, a0, -(LONGSIZE * 8) 26 LONG_S zero, a0, -(LONGSIZE * 7) 27 LONG_S zero, a0, -(LONGSIZE * 6) 28 LONG_S zero, a0, -(LONGSIZE * 5) 29 LONG_S zero, a0, -(LONGSIZE * 4) 30 LONG_S zero, a0, -(LONGSIZE * 3) 31 LONG_S zero, a0, -(LONGSIZE * 2) 32 LONG_S zero, a0, -(LONGSIZE * 1) 33 bne t0, a0, 1b 34 35 jr ra 36SYM_FUNC_END(clear_page) 37EXPORT_SYMBOL(clear_page) 38 39.align 5 40SYM_FUNC_START(copy_page) 41 lu12i.w t8, 1 << (PAGE_SHIFT - 12) 42 PTR_ADD t8, t8, a0 431: 44 LONG_L t0, a1, (LONGSIZE * 0) 45 LONG_L t1, a1, (LONGSIZE * 1) 46 LONG_L t2, a1, (LONGSIZE * 2) 47 LONG_L t3, a1, (LONGSIZE * 3) 48 LONG_L t4, a1, (LONGSIZE * 4) 49 LONG_L t5, a1, (LONGSIZE * 5) 50 LONG_L t6, a1, (LONGSIZE * 6) 51 LONG_L t7, a1, (LONGSIZE * 7) 52 53 LONG_S t0, a0, (LONGSIZE * 0) 54 LONG_S t1, a0, (LONGSIZE * 1) 55 LONG_L t0, a1, (LONGSIZE * 8) 56 LONG_L t1, a1, (LONGSIZE * 9) 57 LONG_S t2, a0, (LONGSIZE * 2) 58 LONG_S t3, a0, (LONGSIZE * 3) 59 LONG_L t2, a1, (LONGSIZE * 10) 60 LONG_L t3, a1, (LONGSIZE * 11) 61 LONG_S t4, a0, (LONGSIZE * 4) 62 LONG_S t5, a0, (LONGSIZE * 5) 63 LONG_L t4, a1, (LONGSIZE * 12) 64 LONG_L t5, a1, (LONGSIZE * 13) 65 LONG_S t6, a0, (LONGSIZE * 6) 66 LONG_S t7, a0, (LONGSIZE * 7) 67 LONG_L t6, a1, (LONGSIZE * 14) 68 LONG_L t7, a1, (LONGSIZE * 15) 69 PTR_ADDI a0, a0, (LONGSIZE * 16) 70 PTR_ADDI a1, a1, (LONGSIZE * 16) 71 72 LONG_S t0, a0, -(LONGSIZE * 8) 73 LONG_S t1, a0, -(LONGSIZE * 7) 74 LONG_S t2, a0, -(LONGSIZE * 6) 75 LONG_S t3, a0, -(LONGSIZE * 5) 76 LONG_S t4, a0, -(LONGSIZE * 4) 77 LONG_S t5, a0, -(LONGSIZE * 3) 78 LONG_S t6, a0, -(LONGSIZE * 2) 79 LONG_S t7, a0, -(LONGSIZE * 1) 80 81 bne t8, a0, 1b 82 jr ra 83SYM_FUNC_END(copy_page) 84EXPORT_SYMBOL(copy_page) 85