1 | /*
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2 | * TOPPERS/SSP Kernel
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3 | * Smallest Set Profile Kernel
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4 | *
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5 | * Copyright (C) 2008 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) 2010 by Meika Sugimoto
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8 | * Copyright (C) 2018, 2019 by Naoki Saito
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9 | * Nagoya Municipal Industrial Research Institute, JAPAN
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10 | *
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11 | * ä¸è¨èä½æ¨©è
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12 | ã¯ï¼ä»¥ä¸ã®(1)ã(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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13 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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14 | * å¤ã»åé
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15 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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16 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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17 | * 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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18 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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19 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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20 | * ç¨ã§ããå½¢ã§åé
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21 | å¸ããå ´åã«ã¯ï¼åé
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22 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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23 | * è
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24 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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25 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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26 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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27 | * ç¨ã§ããªãå½¢ã§åé
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28 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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29 | * ã¨ï¼
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30 | * (a) åé
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31 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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32 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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33 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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34 | * (b) åé
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35 | å¸ã®å½¢æ
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36 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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37 | * å ±åãããã¨ï¼
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38 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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39 | * 害ãããï¼ä¸è¨èä½æ¨©è
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40 | ããã³TOPPERSããã¸ã§ã¯ããå
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41 | 責ãããã¨ï¼
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42 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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43 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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44 | ããã³TOPPERSããã¸ã§ã¯ãã
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45 | * å
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46 | 責ãããã¨ï¼
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47 | *
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48 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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49 | ã
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50 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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51 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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52 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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53 | * ã®è²¬ä»»ãè² ããªãï¼
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54 | *
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55 | * @(#) $Id: core_config.c 384 2019-04-16 11:01:09Z nmir-saito $
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56 | */
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57 |
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58 | /*
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59 | * ã³ã¢ä¾åã¢ã¸ã¥ã¼ã«ï¼ARMv8-Aç¨ï¼
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60 | */
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61 |
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62 | #include "kernel_impl.h"
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63 | #include <t_syslog.h>
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64 |
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65 | /* å²è¾¼ã¿ãã¹ãæ°ã®ç®¡ç */
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66 | uint8_t intnest;
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67 |
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68 | /*
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69 | * ã³ã¢ä¾åã®åæå
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70 | */
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71 | void
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72 | core_initialize(void)
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73 | {
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74 | /* å²è¾¼ã¿ãã¹ãæ°ã®åæå */
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75 | intnest = 0u;
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76 | }
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77 |
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78 | /*
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79 | * ã³ã¢ä¾åã®çµäºå¦ç
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80 | */
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81 | void
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82 | core_terminate(void)
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83 | {
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84 | while(1)
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85 | ;
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86 | }
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87 |
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88 | /*
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89 | * å²è¾¼ã¿ãã³ãã©ã®å¼ã³åºã
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90 | */
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91 | void
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92 | call_int_handler(uint32_t intno)
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93 | {
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94 | intnest++;
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95 |
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96 | i_unlock_cpu();
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97 |
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98 | // ãã³ãã©ã®å¼ã³åºã
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99 | inh_table[intno]();
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100 |
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101 | i_lock_cpu();
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102 |
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103 | intnest--;
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104 | }
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105 |
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106 | /*
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107 | * ã«ã¼ãã«ç®¡çã®CPUä¾å¤ãã³ãã©ã®å¼ã³åºã
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108 | */
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109 | void
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110 | call_exc_handler(void *p_excinf, uint32_t excno)
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111 | {
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112 | uint64_t spsr = *(((uint64_t*)p_excinf) + 4);
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113 |
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114 | intnest++;
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115 |
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116 | /*
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117 | * ããã»ããµã®ç¶æ
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118 | ãCPUä¾å¤çºçåã®ç¶æ
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119 | ã«ãã
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120 | */
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121 | if((spsr & AARCH64_PSTATE_F) == 0) {
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122 | aarch64_clear_daif_f();
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123 | }
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124 |
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125 | if((spsr & AARCH64_PSTATE_I) == 0) {
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126 | aarch64_clear_daif_i();
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127 | }
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128 |
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129 | // ãã³ãã©ã®å¼ã³åºã
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130 | exc_table[excno](p_excinf);
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131 |
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132 | /*
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133 | * ããã»ããµã®ç¶æ
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134 | ãæ»ã
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135 | */
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136 | if((spsr & AARCH64_PSTATE_F) == 0) {
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137 | aarch64_set_daif_f();
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138 | }
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139 |
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140 | if((spsr & AARCH64_PSTATE_I) == 0) {
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141 | aarch64_set_daif_i();
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142 | }
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143 |
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144 | intnest--;
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145 | }
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146 |
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147 | /*
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148 | * FIQãã³ãã©ã®å¼ã³åºã
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149 | * å
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150 | ¨ã¦ã®ä¾å¤ããã¹ã¯ãããç¶æ
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151 | ã§å¼ã³åºããã
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152 | * ä¾å¤è¦å ã®å¤å¥ãå«ããã(ãããã¯ããããå¼ã³åºãããã«ã¼ãã³)ã§è¡ã
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153 | */
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154 | void
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155 | call_fiq_handler(void)
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156 | {
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157 | }
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158 |
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159 |
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160 | #ifndef OMIT_DEFAULT_EXC_HANDLER
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161 | /*
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162 | * ç»é²ããã¦ããªãä¾å¤ãçºçããã¨å¼ã³åºããã
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163 | */
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164 | void
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165 | default_exc_handler(void *p_excinf)
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166 | {
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167 | uint64_t ipm = *(((uint64_t*)p_excinf) + 0);
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168 | uint64_t excno = *(((uint64_t*)p_excinf) + 1);
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169 | uint64_t esr, pc, spsr, sp;
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170 |
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171 | esr = *(((uint64_t*)p_excinf) + 2);
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172 | pc = *(((uint64_t*)p_excinf) + 3);
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173 | spsr = *(((uint64_t*)p_excinf) + 4);
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174 | sp = *(((uint64_t*)p_excinf) + 36);
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175 |
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176 | syslog(LOG_EMERG, "\nUnregistered CPU Exception occured.");
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177 | syslog(LOG_EMERG, "EXCNO = %08x ESR = %08x iMASK = %08x ", excno, esr, ipm);
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178 | syslog(LOG_EMERG, "PC=%08x%08x SP = %08x%08x SPSR = %08x",
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179 | (uint32_t)((pc & UINT64_C(0xffffffff00000000))>>32), (uint32_t)(pc & UINT64_C(0xffffffff)),
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180 | (uint32_t)((sp & UINT64_C(0xffffffff00000000))>>32), (uint32_t)(sp & UINT64_C(0xffffffff)),
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181 | (uint32_t)spsr);
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182 |
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183 | target_exit();
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184 | }
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185 | #endif /* OMIT_DEFAULT_EXC_HANDLER */
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186 |
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187 | #ifndef OMIT_DEFAULT_INT_HANDLER
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188 | /*
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189 | * æªç»é²ã®å²è¾¼ã¿ãçºçããå ´åã«å¼ã³åºããã
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190 | */
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191 | void
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192 | default_int_handler(void)
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193 | {
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194 | syslog(LOG_EMERG, "\nUnregistered Interrupt occurs.");
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195 |
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196 | target_exit();
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197 | }
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198 | #endif /* OMIT_DEFAULT_INT_HANDLER */
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199 |
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200 |
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