1 | /*
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2 | * TOPPERS Software
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3 | * Toyohashi Open Platform for Embedded Real-Time Systems
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4 | *
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5 | * Copyright (C) 2006-2016 by Embedded and Real-Time Systems Laboratory
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6 | * Graduate School of Information Science, Nagoya Univ., JAPAN
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7 | * Copyright (C) 2018,2019 by Naoki Saito
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8 | * Nagoya Municipal Industrial Research Institute, JAPAN
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9 | *
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10 | * ä¸è¨èä½æ¨©è
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11 | ã¯ï¼ä»¥ä¸ã®(1)ã(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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12 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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13 | * å¤ã»åé
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14 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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15 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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16 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãï¼ãã®ã¾ã¾ã®å½¢ã§ã½ã¼
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17 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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18 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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19 | * ç¨ã§ããå½¢ã§åé
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20 | å¸ããå ´åã«ã¯ï¼åé
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21 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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22 | * è
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23 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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24 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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25 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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26 | * ç¨ã§ããªãå½¢ã§åé
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27 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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28 | * ã¨ï¼
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29 | * (a) åé
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30 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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31 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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32 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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33 | * (b) åé
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34 | å¸ã®å½¢æ
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35 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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36 | * å ±åãããã¨ï¼
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37 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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38 | * 害ãããï¼ä¸è¨èä½æ¨©è
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39 | ããã³TOPPERSããã¸ã§ã¯ããå
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40 | 責ãããã¨ï¼
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41 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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42 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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43 | ããã³TOPPERSããã¸ã§ã¯ãã
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44 | * å
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45 | 責ãããã¨ï¼
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46 | *
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47 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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48 | ã
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49 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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50 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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51 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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52 | * ã®è²¬ä»»ãè² ããªãï¼
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53 | *
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54 | * $Id: arm64.h 384 2019-04-16 11:01:09Z nmir-saito $
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55 | */
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56 | #ifndef TOPPERS_ARM64_H
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57 | #define TOPPERS_ARM64_H
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58 |
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59 | /*
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60 | * PSTATE
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61 | */
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62 | #define AARCH64_PSTATE_N (1 << 31)
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63 | #define AARCH64_PSTATE_Z (1 << 30)
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64 | #define AARCH64_PSTATE_C (1 << 29)
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65 | #define AARCH64_PSTATE_V (1 << 28)
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66 | #define AARCH64_PSTATE_SS (1 << 21)
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67 | #define AARCH64_PSTATE_IL (1 << 20)
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68 | #define AARCH64_PSTATE_D (1 << 9)
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69 | #define AARCH64_PSTATE_A (1 << 8)
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70 | #define AARCH64_PSTATE_I (1 << 7)
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71 | #define AARCH64_PSTATE_F (1 << 6)
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72 | #define AARCH64_PSTATE_MODE4 (1 << 4)
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73 | #define AARCH64_PSTATE_MODE_MASK (AARCH64_PSTATE_MODE4 - 1)
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74 |
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75 | /*
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76 | * DAIF
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77 | */
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78 | #define AARCH64_DAIF_FIQ UINT64_C(1)
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79 | #define AARCH64_DAIF_IRQ UINT64_C(2)
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80 | #define AARCH64_DAIF_SERR UINT64_C(4)
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81 | #define AARCH64_DAIF_DBG UINT64_C(8)
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82 | #define AARCH64_DAIF_ALL (AARCH64_DAIF_DBG|AARCH64_DAIF_SERR|AARCH64_DAIF_IRQ|AARCH64_DAIF_FIQ)
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83 |
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84 | #ifndef TOPPERS_MACRO_ONLY
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85 |
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86 | /*
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87 | * DAIFã®è¨å®ããã³ç¶æ
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88 | åç
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89 | §
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90 | */
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91 | Inline uint32_t
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92 | aarch64_get_daif(void){
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93 | uint32_t daif;
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94 | Asm ("mrs %0, daif\n\t":"=r"(daif): : "memory");
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95 | return daif;
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96 | }
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97 |
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98 | Inline void
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99 | aarch64_set_daif(uint32_t daif) {
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100 |
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101 | Asm ("msr daif, %0\n\t" : : "r"(daif): "cc", "memory");
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102 | }
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103 |
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104 | /*
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105 | * DAIF.I ã®ã»ãã/ã¯ãªã¢
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106 | */
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107 | Inline void
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108 | aarch64_set_daif_i(void) {
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109 | Asm ("msr daifset, %0\n\t"::"i"(AARCH64_DAIF_IRQ): "cc", "memory");
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110 | }
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111 |
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112 | Inline void
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113 | aarch64_clear_daif_i(void) {
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114 | Asm ("msr daifclr, %0\n\t"::"i"(AARCH64_DAIF_IRQ): "cc", "memory");
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115 | }
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116 |
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117 | /*
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118 | * DAIF.F ã®ã»ãã/ã¯ãªã¢
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119 | */
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120 | Inline void
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121 | aarch64_set_daif_f(void) {
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122 | Asm ("msr daifset, %0\n\t"::"i"(AARCH64_DAIF_FIQ): "cc", "memory");
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123 | }
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124 |
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125 | Inline void
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126 | aarch64_clear_daif_f(void) {
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127 | Asm ("msr daifclr, %0\n\t"::"i"(AARCH64_DAIF_FIQ): "cc", "memory");
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128 | }
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129 |
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130 | /*
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131 | * DAIF.F ããã³ DAIF.I ã®åæã»ãã/ã¯ãªã¢
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132 | */
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133 | Inline void
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134 | aarch64_set_daif_if(void) {
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135 | Asm ("msr daifset, %0\n\t"::"i"(AARCH64_DAIF_IRQ | AARCH64_DAIF_FIQ): "cc", "memory");
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136 | }
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137 |
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138 | Inline void
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139 | aarch64_clear_daif_if(void) {
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140 | Asm ("msr daifclr, %0\n\t"::"i"(AARCH64_DAIF_IRQ | AARCH64_DAIF_FIQ): "cc", "memory");
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141 | }
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142 |
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143 | /*
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144 | * DAIF.I ã®ç¶æ
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145 | åç
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146 | §
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147 | */
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148 | Inline bool_t
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149 | aarch64_sense_daif_irq(void) {
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150 | uint32_t daif;
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151 | bool_t state;
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152 |
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153 | daif = aarch64_get_daif();
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154 |
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155 | if(daif & AARCH64_PSTATE_I) {
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156 | state = true;
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157 | }
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158 | else {
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159 | state = false;
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160 | }
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161 |
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162 | return state;
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163 | }
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164 |
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165 | /*
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166 | * DAIF.F ã®ç¶æ
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167 | åç
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168 | §
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169 | */
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170 | Inline bool_t
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171 | aarch64_sense_daif_fiq(void) {
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172 | uint32_t daif;
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173 | bool_t state;
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174 |
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175 | daif = aarch64_get_daif();
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176 |
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177 | if(daif & AARCH64_PSTATE_F) {
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178 | state = true;
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179 | }
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180 | else {
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181 | state = false;
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182 | }
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183 |
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184 | return state;
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185 | }
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186 |
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187 | /*
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188 | * ã¯ãªãã£ã«ã«å¦çã®åºå£(æé©åé²æ¢)
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189 | */
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190 | Inline void
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191 | aarch64_exit_critical(void)
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192 | {
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193 | Asm("":::"memory");
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194 | }
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195 |
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196 | #endif /* TOPPERS_MACRO_ONLY */
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197 | #endif /* TOPPERS_ARM64_H */
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