| 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
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| 2 | /* |
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| 3 | * Copyright (C) 2020-2022 Loongson Technology Corporation Limited |
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| 4 | */ |
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| 5 | #include <linux/export.h> |
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| 6 | #include <linux/linkage.h> |
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| 7 | #include <asm/asm.h> |
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| 8 | #include <asm/page.h> |
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| 9 | #include <asm/regdef.h> |
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| 10 | |
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| 11 | .align 5 |
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| 12 | SYM_FUNC_START(clear_page) |
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| 13 | lu12i.w t0, 1 << (PAGE_SHIFT - 12) |
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| 14 | PTR_ADD t0, t0, a0 |
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| 15 | 1: |
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| 16 | LONG_S zero, a0, (LONGSIZE * 0) |
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| 17 | LONG_S zero, a0, (LONGSIZE * 1) |
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| 18 | LONG_S zero, a0, (LONGSIZE * 2) |
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| 19 | LONG_S zero, a0, (LONGSIZE * 3) |
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| 20 | LONG_S zero, a0, (LONGSIZE * 4) |
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| 21 | LONG_S zero, a0, (LONGSIZE * 5) |
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| 22 | LONG_S zero, a0, (LONGSIZE * 6) |
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| 23 | LONG_S zero, a0, (LONGSIZE * 7) |
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| 24 | PTR_ADDI a0, a0, (LONGSIZE * 16) |
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| 25 | LONG_S zero, a0, -(LONGSIZE * 8) |
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| 26 | LONG_S zero, a0, -(LONGSIZE * 7) |
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| 27 | LONG_S zero, a0, -(LONGSIZE * 6) |
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| 28 | LONG_S zero, a0, -(LONGSIZE * 5) |
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| 29 | LONG_S zero, a0, -(LONGSIZE * 4) |
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| 30 | LONG_S zero, a0, -(LONGSIZE * 3) |
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| 31 | LONG_S zero, a0, -(LONGSIZE * 2) |
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| 32 | LONG_S zero, a0, -(LONGSIZE * 1) |
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| 33 | bne t0, a0, 1b |
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| 34 | |
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| 35 | jr ra |
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| 36 | SYM_FUNC_END(clear_page) |
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| 37 | EXPORT_SYMBOL(clear_page) |
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| 38 | |
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| 39 | .align 5 |
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| 40 | SYM_FUNC_START(copy_page) |
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| 41 | lu12i.w t8, 1 << (PAGE_SHIFT - 12) |
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| 42 | PTR_ADD t8, t8, a0 |
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| 43 | 1: |
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| 44 | LONG_L t0, a1, (LONGSIZE * 0) |
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| 45 | LONG_L t1, a1, (LONGSIZE * 1) |
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| 46 | LONG_L t2, a1, (LONGSIZE * 2) |
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| 47 | LONG_L t3, a1, (LONGSIZE * 3) |
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| 48 | LONG_L t4, a1, (LONGSIZE * 4) |
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| 49 | LONG_L t5, a1, (LONGSIZE * 5) |
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| 50 | LONG_L t6, a1, (LONGSIZE * 6) |
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| 51 | LONG_L t7, a1, (LONGSIZE * 7) |
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| 52 | |
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| 53 | LONG_S t0, a0, (LONGSIZE * 0) |
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| 54 | LONG_S t1, a0, (LONGSIZE * 1) |
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| 55 | LONG_L t0, a1, (LONGSIZE * 8) |
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| 56 | LONG_L t1, a1, (LONGSIZE * 9) |
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| 57 | LONG_S t2, a0, (LONGSIZE * 2) |
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| 58 | LONG_S t3, a0, (LONGSIZE * 3) |
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| 59 | LONG_L t2, a1, (LONGSIZE * 10) |
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| 60 | LONG_L t3, a1, (LONGSIZE * 11) |
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| 61 | LONG_S t4, a0, (LONGSIZE * 4) |
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| 62 | LONG_S t5, a0, (LONGSIZE * 5) |
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| 63 | LONG_L t4, a1, (LONGSIZE * 12) |
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| 64 | LONG_L t5, a1, (LONGSIZE * 13) |
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| 65 | LONG_S t6, a0, (LONGSIZE * 6) |
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| 66 | LONG_S t7, a0, (LONGSIZE * 7) |
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| 67 | LONG_L t6, a1, (LONGSIZE * 14) |
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| 68 | LONG_L t7, a1, (LONGSIZE * 15) |
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| 69 | PTR_ADDI a0, a0, (LONGSIZE * 16) |
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| 70 | PTR_ADDI a1, a1, (LONGSIZE * 16) |
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| 71 | |
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| 72 | LONG_S t0, a0, -(LONGSIZE * 8) |
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| 73 | LONG_S t1, a0, -(LONGSIZE * 7) |
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| 74 | LONG_S t2, a0, -(LONGSIZE * 6) |
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| 75 | LONG_S t3, a0, -(LONGSIZE * 5) |
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| 76 | LONG_S t4, a0, -(LONGSIZE * 4) |
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| 77 | LONG_S t5, a0, -(LONGSIZE * 3) |
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| 78 | LONG_S t6, a0, -(LONGSIZE * 2) |
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| 79 | LONG_S t7, a0, -(LONGSIZE * 1) |
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| 80 | |
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| 81 | bne t8, a0, 1b |
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| 82 | jr ra |
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| 83 | SYM_FUNC_END(copy_page) |
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| 84 | EXPORT_SYMBOL(copy_page) |
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| 85 | |
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