| /* 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) |
| PTR_ADD t0, t0, a0 |
| 1: |
| LONG_S zero, a0, (LONGSIZE * 0) |
| LONG_S zero, a0, (LONGSIZE * 1) |
| LONG_S zero, a0, (LONGSIZE * 2) |
| LONG_S zero, a0, (LONGSIZE * 3) |
| LONG_S zero, a0, (LONGSIZE * 4) |
| LONG_S zero, a0, (LONGSIZE * 5) |
| LONG_S zero, a0, (LONGSIZE * 6) |
| LONG_S zero, a0, (LONGSIZE * 7) |
| PTR_ADDI a0, a0, (LONGSIZE * 16) |
| LONG_S zero, a0, -(LONGSIZE * 8) |
| LONG_S zero, a0, -(LONGSIZE * 7) |
| LONG_S zero, a0, -(LONGSIZE * 6) |
| LONG_S zero, a0, -(LONGSIZE * 5) |
| LONG_S zero, a0, -(LONGSIZE * 4) |
| LONG_S zero, a0, -(LONGSIZE * 3) |
| LONG_S zero, a0, -(LONGSIZE * 2) |
| LONG_S zero, a0, -(LONGSIZE * 1) |
| 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) |
| PTR_ADD t8, t8, a0 |
| 1: |
| LONG_L t0, a1, (LONGSIZE * 0) |
| LONG_L t1, a1, (LONGSIZE * 1) |
| LONG_L t2, a1, (LONGSIZE * 2) |
| LONG_L t3, a1, (LONGSIZE * 3) |
| LONG_L t4, a1, (LONGSIZE * 4) |
| LONG_L t5, a1, (LONGSIZE * 5) |
| LONG_L t6, a1, (LONGSIZE * 6) |
| LONG_L t7, a1, (LONGSIZE * 7) |
| |
| LONG_S t0, a0, (LONGSIZE * 0) |
| LONG_S t1, a0, (LONGSIZE * 1) |
| LONG_L t0, a1, (LONGSIZE * 8) |
| LONG_L t1, a1, (LONGSIZE * 9) |
| LONG_S t2, a0, (LONGSIZE * 2) |
| LONG_S t3, a0, (LONGSIZE * 3) |
| LONG_L t2, a1, (LONGSIZE * 10) |
| LONG_L t3, a1, (LONGSIZE * 11) |
| LONG_S t4, a0, (LONGSIZE * 4) |
| LONG_S t5, a0, (LONGSIZE * 5) |
| LONG_L t4, a1, (LONGSIZE * 12) |
| LONG_L t5, a1, (LONGSIZE * 13) |
| LONG_S t6, a0, (LONGSIZE * 6) |
| LONG_S t7, a0, (LONGSIZE * 7) |
| LONG_L t6, a1, (LONGSIZE * 14) |
| LONG_L t7, a1, (LONGSIZE * 15) |
| PTR_ADDI a0, a0, (LONGSIZE * 16) |
| PTR_ADDI a1, a1, (LONGSIZE * 16) |
| |
| LONG_S t0, a0, -(LONGSIZE * 8) |
| LONG_S t1, a0, -(LONGSIZE * 7) |
| LONG_S t2, a0, -(LONGSIZE * 6) |
| LONG_S t3, a0, -(LONGSIZE * 5) |
| LONG_S t4, a0, -(LONGSIZE * 4) |
| LONG_S t5, a0, -(LONGSIZE * 3) |
| LONG_S t6, a0, -(LONGSIZE * 2) |
| LONG_S t7, a0, -(LONGSIZE * 1) |
| |
| bne t8, a0, 1b |
| jr ra |
| SYM_FUNC_END(copy_page) |
| EXPORT_SYMBOL(copy_page) |
