.. | .. |
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| 1 | +/* SPDX-License-Identifier: GPL-2.0-only */ |
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1 | 2 | /* |
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2 | 3 | * Copyright (C) 2012 ARM Ltd. |
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3 | | - * |
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4 | | - * This program is free software; you can redistribute it and/or modify |
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5 | | - * it under the terms of the GNU General Public License version 2 as |
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6 | | - * published by the Free Software Foundation. |
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7 | | - * |
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8 | | - * This program is distributed in the hope that it will be useful, |
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9 | | - * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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10 | | - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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11 | | - * GNU General Public License for more details. |
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12 | | - * |
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13 | | - * You should have received a copy of the GNU General Public License |
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14 | | - * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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15 | 4 | */ |
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16 | 5 | |
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17 | 6 | #include <linux/linkage.h> |
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18 | 7 | |
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19 | | -#include <asm/cache.h> |
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20 | 8 | #include <asm/asm-uaccess.h> |
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| 9 | +#include <asm/assembler.h> |
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| 10 | +#include <asm/cache.h> |
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21 | 11 | |
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22 | 12 | /* |
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23 | 13 | * Copy from user space to a kernel buffer (alignment handled by the hardware) |
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.. | .. |
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30 | 20 | * x0 - bytes not copied |
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31 | 21 | */ |
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32 | 22 | |
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33 | | - .macro ldrb1 ptr, regB, val |
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34 | | - uao_user_alternative 9998f, ldrb, ldtrb, \ptr, \regB, \val |
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| 23 | + .macro ldrb1 reg, ptr, val |
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| 24 | + uao_user_alternative 9998f, ldrb, ldtrb, \reg, \ptr, \val |
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35 | 25 | .endm |
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36 | 26 | |
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37 | | - .macro strb1 ptr, regB, val |
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38 | | - strb \ptr, [\regB], \val |
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| 27 | + .macro strb1 reg, ptr, val |
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| 28 | + strb \reg, [\ptr], \val |
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39 | 29 | .endm |
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40 | 30 | |
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41 | | - .macro ldrh1 ptr, regB, val |
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42 | | - uao_user_alternative 9997f, ldrh, ldtrh, \ptr, \regB, \val |
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| 31 | + .macro ldrh1 reg, ptr, val |
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| 32 | + uao_user_alternative 9997f, ldrh, ldtrh, \reg, \ptr, \val |
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43 | 33 | .endm |
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44 | 34 | |
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45 | | - .macro strh1 ptr, regB, val |
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46 | | - strh \ptr, [\regB], \val |
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| 35 | + .macro strh1 reg, ptr, val |
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| 36 | + strh \reg, [\ptr], \val |
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47 | 37 | .endm |
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48 | 38 | |
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49 | | - .macro ldr1 ptr, regB, val |
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50 | | - uao_user_alternative 9997f, ldr, ldtr, \ptr, \regB, \val |
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| 39 | + .macro ldr1 reg, ptr, val |
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| 40 | + uao_user_alternative 9997f, ldr, ldtr, \reg, \ptr, \val |
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51 | 41 | .endm |
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52 | 42 | |
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53 | | - .macro str1 ptr, regB, val |
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54 | | - str \ptr, [\regB], \val |
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| 43 | + .macro str1 reg, ptr, val |
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| 44 | + str \reg, [\ptr], \val |
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55 | 45 | .endm |
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56 | 46 | |
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57 | | - .macro ldp1 ptr, regB, regC, val |
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58 | | - uao_ldp 9997f, \ptr, \regB, \regC, \val |
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| 47 | + .macro ldp1 reg1, reg2, ptr, val |
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| 48 | + uao_ldp 9997f, \reg1, \reg2, \ptr, \val |
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59 | 49 | .endm |
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60 | 50 | |
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61 | | - .macro stp1 ptr, regB, regC, val |
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62 | | - stp \ptr, \regB, [\regC], \val |
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| 51 | + .macro stp1 reg1, reg2, ptr, val |
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| 52 | + stp \reg1, \reg2, [\ptr], \val |
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63 | 53 | .endm |
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64 | 54 | |
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65 | 55 | end .req x5 |
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66 | 56 | srcin .req x15 |
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67 | | -ENTRY(__arch_copy_from_user) |
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68 | | - uaccess_enable_not_uao x3, x4, x5 |
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| 57 | +SYM_FUNC_START(__arch_copy_from_user) |
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69 | 58 | add end, x0, x2 |
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70 | 59 | mov srcin, x1 |
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71 | 60 | #include "copy_template.S" |
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72 | | - uaccess_disable_not_uao x3, x4 |
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73 | 61 | mov x0, #0 // Nothing to copy |
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74 | 62 | ret |
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75 | | -ENDPROC(__arch_copy_from_user) |
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| 63 | +SYM_FUNC_END(__arch_copy_from_user) |
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| 64 | +EXPORT_SYMBOL(__arch_copy_from_user) |
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76 | 65 | |
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77 | 66 | .section .fixup,"ax" |
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78 | 67 | .align 2 |
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.. | .. |
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82 | 71 | USER(9998f, ldtrb tmp1w, [srcin]) |
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83 | 72 | strb tmp1w, [dst], #1 |
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84 | 73 | 9998: sub x0, end, dst // bytes not copied |
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85 | | - uaccess_disable_not_uao x3, x4 |
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86 | 74 | ret |
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87 | 75 | .previous |
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