[353] | 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 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: prc_config.c 1304 2008-08-27 07:28:36Z ertl-honda $
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| 56 | */
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| 57 |
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| 58 | /*
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| 59 | * ããã»ããµä¾åã¢ã¸ã¥ã¼ã«ï¼ARM64ç¨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 | * ããã»ããµä¾åã®åæå
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| 70 | */
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| 71 | void
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| 72 | prc_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 | * GICã®è¨å®
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| 79 | */
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| 80 | gicd_initialize();
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| 81 | gicc_initialize();
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| 82 | }
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| 83 |
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| 84 | /*
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| 85 | * ããã»ããµä¾åã®çµäºå¦ç
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| 86 | */
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| 87 | void
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| 88 | prc_terminate(void)
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| 89 | {
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| 90 | while(1)
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| 91 | ;
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| 92 | }
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| 93 |
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| 94 | /*
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| 95 | * å²è¾¼ã¿è¦æ±ã©ã¤ã³å±æ§ã®è¨å®
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| 96 | */
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| 97 | void
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| 98 | x_config_int(INTNO intno, ATR intatr, PRI intpri)
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| 99 | {
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| 100 | assert(VALID_INTNO(intno));
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| 101 | assert(TMIN_INTPRI <= intpri && intpri <= TMAX_INTPRI);
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| 102 |
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| 103 | /*
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| 104 | * å²è¾¼ã¿ãç¦æ¢
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| 105 | *
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| 106 | * å²è¾¼ã¿ãåãä»ããã¾ã¾ï¼ã¬ãã«ããªã¬ï¼ã¨ãã¸ããªã¬ã®è¨å®ãï¼å²
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| 107 | * è¾¼ã¿åªå
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| 108 | 度ã®è¨å®ãè¡ãã®ã¯å±éºãªããï¼å²è¾¼ã¿å±æ§ã«ãããããï¼
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| 109 | * ä¸æ¦ãã¹ã¯ããï¼
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| 110 | */
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| 111 | x_disable_int(intno);
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| 112 |
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| 113 | /*
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| 114 | * å²è¾¼ã¿ãã³ã³ãã£ã®ã¥ã¬ã¼ã·ã§ã³
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| 115 | */
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| 116 |
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| 117 | if ((intatr & TA_EDGE) != 0U) {
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| 118 | gicd_config(intno, GICD_ICFGRn_EDGE);
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| 119 | x_clear_int(intno);
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| 120 | }
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| 121 | else {
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| 122 | gicd_config(intno, GICD_ICFGRn_LEVEL);
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| 123 | }
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| 124 |
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| 125 | /*
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| 126 | * å²è¾¼ã¿åªå
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| 127 | 度ã¨ã¿ã¼ã²ããããã»ããµãè¨å®
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| 128 | */
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| 129 | gicd_set_priority(intno, INT_IPM(intpri));
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| 130 | gicd_set_target(intno, 1U << ARM_PRC_INDEX);
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| 131 |
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| 132 | /*
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| 133 | * å²è¾¼ã¿ã許å¯
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| 134 | */
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| 135 | if ((intatr & TA_ENAINT) != 0U) {
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| 136 | x_enable_int(intno);
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| 137 | }
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| 138 | }
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| 139 |
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| 140 | #ifndef OMIT_DEFAULT_EXC_HANDLER
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| 141 | /*
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| 142 | * ç»é²ããã¦ããªãä¾å¤ãçºçããã¨å¼ã³åºããã
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| 143 | */
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| 144 | void
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| 145 | default_exc_handler(void *p_excinf)
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| 146 | {
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| 147 | uint64_t gicc_pmr = *(((uint64_t*)p_excinf) + 0);
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| 148 | uint64_t excno = *(((uint64_t*)p_excinf) + 1);
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| 149 | // ã¹ã¿ãã¯ãã¤ã³ã¿ã®èª¿æ´é
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| 150 | uint64_t adj = *(((uint64_t*)p_excinf) + 3) >> 3;
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| 151 | uint64_t esr, pc, spsr, sp;
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| 152 |
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| 153 | esr = *(((uint64_t*)p_excinf) + 4 + adj);
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| 154 | pc = *(((uint64_t*)p_excinf) + 5 + adj);
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| 155 | spsr = *(((uint64_t*)p_excinf) + 6 + adj);
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| 156 | sp = *(((uint64_t*)p_excinf) + 38 + adj);
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| 157 |
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| 158 | syslog(LOG_EMERG, "\nUnregistered CPU Exception occured.");
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| 159 | syslog(LOG_EMERG, "EXCNO = %08x ESR = %08x GICC_PMR = %08x ", excno, esr, gicc_pmr);
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| 160 | syslog(LOG_EMERG, "PC=%08x%08x SP = %08x%08x SPSR = %08x",
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| 161 | (uint32_t)((pc & UINT64_C(0xffffffff00000000))>>32), (uint32_t)(pc & UINT64_C(0xffffffff)),
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| 162 | (uint32_t)((sp & UINT64_C(0xffffffff00000000))>>32), (uint32_t)(sp & UINT64_C(0xffffffff)),
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| 163 | (uint32_t)spsr);
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| 164 |
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| 165 | target_exit();
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| 166 | }
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| 167 | #endif /* OMIT_DEFAULT_EXC_HANDLER */
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| 168 |
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| 169 | #ifndef OMIT_DEFAULT_INT_HANDLER
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| 170 | /*
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| 171 | * æªç»é²ã®å²è¾¼ã¿ãçºçããå ´åã«å¼ã³åºããã
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| 172 | */
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| 173 | void
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| 174 | default_int_handler(void)
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| 175 | {
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| 176 | syslog(LOG_EMERG, "\nUnregistered Interrupt occurs.");
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| 177 |
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| 178 | target_exit();
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| 179 | }
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| 180 | #endif /* OMIT_DEFAULT_INT_HANDLER */
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| 181 |
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| 182 | /*
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| 183 | * å²è¾¼ã¿ãã³ãã©ã®å¼ã³åºã
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| 184 | */
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| 185 | void
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| 186 | call_int_handler(uint32_t intno)
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| 187 | {
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| 188 | intnest++;
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| 189 |
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| 190 | i_unlock_cpu();
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| 191 |
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| 192 | // ãã³ãã©ã®å¼ã³åºã
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| 193 | inh_table[intno]();
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| 194 |
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| 195 | i_lock_cpu();
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| 196 |
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| 197 | intnest--;
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| 198 | }
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| 199 |
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| 200 | /*
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| 201 | * CPUä¾å¤ãã³ãã©ã®å¼ã³åºã
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| 202 | */
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| 203 | void
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| 204 | call_exc_handler(void *p_excinf, uint32_t excno)
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| 205 | {
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| 206 | intnest++;
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| 207 |
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| 208 | // CPUä¾å¤çºçæã¯CPUããã¯ãã©ã°ãæä½ããªã
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| 209 |
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| 210 | // ãã³ãã©ã®å¼ã³åºã
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| 211 | exc_table[excno](p_excinf);
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| 212 |
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| 213 | i_lock_cpu();
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| 214 |
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| 215 | intnest--;
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| 216 | }
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| 217 |
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