1 | /*
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2 | * TOPPERS/ASP Kernel
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3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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4 | * Advanced Standard Profile Kernel
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5 | *
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6 | * Copyright (C) 2000-2003 by Embedded and Real-Time Systems Laboratory
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7 | * Toyohashi Univ. of Technology, JAPAN
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8 | * Copyright (C) 2003-2004 by Naoki Saito
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9 | * Nagoya Municipal Industrial Research Institute, JAPAN
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10 | * Copyright (C) 2003-2004 by Platform Development Center
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11 | * RICOH COMPANY,LTD. JAPAN
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12 | * Copyright (C) 2008-2010 by Witz Corporation, JAPAN
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13 | * Copyright (C) 2013 by Mitsuhiro Matsuura
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14 | *
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15 | * ä¸è¨èä½æ¨©è
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16 | ã¯ï¼ä»¥ä¸ã®(1)ï½(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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17 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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18 | * å¤ã»åé
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19 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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20 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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21 | * 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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22 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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23 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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24 | * ç¨ã§ããå½¢ã§åé
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25 | å¸ããå ´åã«ã¯ï¼åé
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26 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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27 | * è
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28 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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29 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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30 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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31 | * ç¨ã§ããªãå½¢ã§åé
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32 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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33 | * ã¨ï¼
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34 | * (a) åé
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35 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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36 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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37 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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38 | * (b) åé
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39 | å¸ã®å½¢æ
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40 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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41 | * å ±åãããã¨ï¼
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42 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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43 | * 害ãããï¼ä¸è¨èä½æ¨©è
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44 | ããã³TOPPERSããã¸ã§ã¯ããå
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45 | 責ãããã¨ï¼
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46 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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47 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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48 | ããã³TOPPERSããã¸ã§ã¯ãã
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49 | * å
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50 | 責ãããã¨ï¼
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51 | *
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52 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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53 | ã
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54 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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55 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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56 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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57 | * ã®è²¬ä»»ãè² ããªãï¼
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58 | *
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59 | * @(#) $Id: target_timer.c 313 2017-07-23 04:50:32Z coas-nagasima $
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60 | */
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61 |
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62 | /*
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63 | * ã¿ã¤ããã©ã¤ãï¼GR-SAKURAç¨ï¼
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64 | */
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65 |
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66 | #include "kernel_impl.h"
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67 | #include "time_event.h"
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68 | #include <sil.h>
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69 | #include "target_timer.h"
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70 |
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71 | /*
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72 | * ã¿ã¤ãã®åæåå¦ç
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73 | */
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74 | void
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75 | target_timer_initialize(intptr_t exinf)
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76 | {
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77 | /*
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78 | * ã¢ã¸ã¥ã¼ã«ã¹ãããæ©è½ã®è¨å®
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79 | */
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80 | sil_wrh_mem(SYSTEM_PRCR_ADDR, 0xA502); /* æ¸è¾¼ã¿è¨±å¯ */
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81 | sil_wrw_mem(SYSTEM_MSTPCRA_ADDR,
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82 | sil_rew_mem(SYSTEM_MSTPCRA_ADDR) & ~SYSTEM_MSTPCRA_MSTPA15_BIT); /* CMT0 */
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83 | sil_wrh_mem(SYSTEM_PRCR_ADDR, 0xA500); /* æ¸è¾¼ã¿ç¦æ¢ */
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84 |
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85 | /*
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86 | * ã¿ã¤ãåæ¢
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87 | */
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88 | sil_wrh_mem(CMT_CMSTR0_ADDR,
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89 | sil_reh_mem(CMT_CMSTR0_ADDR) & ~CMT_CMSTR0_STR0_BIT);
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90 |
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91 | /*
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92 | * ã«ã¦ã³ãã¢ããã«ç¨ããããã¯ããã¯è¨å®
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93 | * PCLK/32ãé¸æ
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94 | */
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95 | sil_wrh_mem(CMT0_CMCR_ADDR, CMT_PCLK_DIV_8);
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96 |
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97 | /*
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98 | * ã³ã³ãã¢ãããã¿ã¤ãã«ã¦ã³ã¿è¨å®
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99 | */
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100 | sil_wrh_mem(CMT0_CMCNT_ADDR, 0U);
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101 |
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102 | /*
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103 | * ã³ã³ãã¢ãããã¿ã¤ãå¨æè¨å®
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104 | */
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105 | sil_wrh_mem(CMT0_CMCOR_ADDR, CMCOR_PERIOD);
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106 |
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107 | /*
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108 | * ã³ã³ãã¢ãããã¿ã¤ãå²ãè¾¼ã¿è¦æ±å
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109 | è¨å®ã¬ã¸ã¹ã¿ï¼ISELR28ï¼
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110 | */
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111 | sil_wrb_mem(ICU_ISELR028_ADDR, ICU_ISEL_CPU);
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112 |
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113 | /*
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114 | * ã¿ã¤ãåä½éå§åã®å²è¾¼ã¿è¦æ±ãã¯ãªã¢
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115 | */
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116 | x_clear_int(INTNO_TIMER);
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117 |
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118 | /*
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119 | * ã³ã³ãã¢ãããã¿ã¤ãå²ãè¾¼ã¿ã許å¯
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120 | */
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121 | sil_wrh_mem(CMT0_CMCR_ADDR,
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122 | sil_reh_mem(CMT0_CMCR_ADDR) | CMT0_CMCR_CMIE_BIT);
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123 |
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124 | /*
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125 | * ã¿ã¤ãåä½éå§
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126 | */
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127 | sil_wrh_mem(CMT_CMSTR0_ADDR,
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128 | sil_reh_mem(CMT_CMSTR0_ADDR) | CMT_CMSTR0_STR0_BIT);
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129 | }
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130 |
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131 | /*
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132 | * ã¿ã¤ãã®åæ¢å¦ç
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133 | */
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134 | void
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135 | target_timer_terminate(intptr_t exinf)
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136 | {
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137 | /*
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138 | * ã¿ã¤ãåæ¢
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139 | */
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140 | sil_wrh_mem(CMT_CMSTR0_ADDR,
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141 | sil_reh_mem(CMT_CMSTR0_ADDR) & ~CMT_CMSTR0_STR0_BIT);
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142 | }
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143 |
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144 | /*
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145 | * ã¿ã¤ãå²è¾¼ã¿ãã³ãã©
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146 | */
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147 | void target_timer_handler(void)
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148 | {
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149 | i_begin_int(INTNO_TIMER);
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150 |
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151 | signal_time(); /* ã¿ã¤ã ãã£ãã¯ã®ä¾çµ¦ */
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152 |
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153 | i_end_int(INTNO_TIMER);
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154 | }
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