[384] | 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) 2013-2015 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: core_timer.h 384 2019-04-16 11:01:09Z nmir-saito $
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| 55 | */
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| 56 |
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| 57 | /*
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| 58 | * ã¿ã¤ããã©ã¤ãï¼Generic Timerï¼
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| 59 | */
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| 60 |
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| 61 | #ifndef TOPPERS_CORE_TIMER_H
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| 62 | #define TOPPERS_CORE_TIMER_H
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| 63 |
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| 64 | #include <sil.h>
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| 65 |
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| 66 | /*
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| 67 | * ã¿ã¤ãå²è¾¼ã¿ãã³ãã©ç»é²ã®ããã®å®æ°
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| 68 | */
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| 69 |
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| 70 | #define INTNO_TIMER TINTNO_CNTPNS /* å²è¾¼ã¿çªå· */
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| 71 | #define INHNO_TIMER INTNO_TIMER /* å²è¾¼ã¿ãã³ãã©çªå· */
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| 72 |
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| 73 | #ifndef INTPRI_TIMER
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| 74 | #define INTPRI_TIMER (-3) /* å²è¾¼ã¿åªå
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| 75 | 度 */
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| 76 | #endif
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| 77 |
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| 78 | #ifndef INTATR_TIMER
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| 79 | #define INTATR_TIMER TA_NULL /* å²è¾¼ã¿å±æ§ */
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| 80 | #endif
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| 81 |
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| 82 | /*
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| 83 | * å¶å¾¡ã¬ã¸ã¹ã¿ã®ãããå®ç¾©
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| 84 | */
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| 85 | #define CNTP_CTL_ENABLE (1 << 0)
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| 86 | #define CNTP_CTL_MASK (1 << 1)
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| 87 | #define CNTP_CTL_ISTATUS (1 << 2)
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| 88 |
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| 89 |
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| 90 | #ifndef TOPPERS_MACRO_ONLY
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| 91 |
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| 92 | /*
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| 93 | * ç©çã¿ã¤ãã®å¶å¾¡ã¬ã¸ã¹ã¿ããã®èªã¿åºã
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| 94 | */
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| 95 | Inline uint32_t
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| 96 | clock_read_ctrl(void) {
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| 97 | uint32_t cntv_ctrl;
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| 98 |
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| 99 | Asm ("mrs %0, cntp_ctl_el0"
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| 100 | : "=r"(cntv_ctrl) :: "memory");
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| 101 |
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| 102 | return cntv_ctrl;
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| 103 | }
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| 104 |
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| 105 | /*
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| 106 | * ç©çã¿ã¤ãã®å¶å¾¡ã¬ã¸ã¹ã¿ã¸ã®æ¸ãè¾¼ã¿
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| 107 | */
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| 108 | Inline void
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| 109 | clock_write_ctrl(uint32_t cntv_ctrl) {
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| 110 |
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| 111 | Asm ("msr cntp_ctl_el0, %0"
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| 112 | :: "r"(cntv_ctrl) : "memory");
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| 113 | }
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| 114 |
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| 115 | /*
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| 116 | * ç©çã¿ã¤ã(ããªã¼ã«ã¦ã³ã¿)ã®ã«ã¦ã³ãå¤ã®èªã¿åºã
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| 117 | */
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| 118 | Inline uint64_t
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| 119 | clock_read_counter(void){
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| 120 | uint64_t cval;
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| 121 |
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| 122 | Asm ("mrs %0, cntpct_el0" : "=r" (cval):: "memory");
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| 123 |
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| 124 | return cval;
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| 125 | }
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| 126 |
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| 127 | /*
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| 128 | * ç©çã¿ã¤ãå¤ã®èªã¿åºã
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| 129 | */
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| 130 | Inline uint32_t
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| 131 | clock_read_tval(void){
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| 132 | uint32_t cntp_tval;
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| 133 |
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| 134 | Asm ("mrs %0, cntp_tval_el0; isb;" : "=r"(cntp_tval)
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| 135 | :: "memory");
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| 136 | return cntp_tval;
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| 137 | }
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| 138 |
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| 139 | /*
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| 140 | * ç©çã¿ã¤ãå¤ã®æ¸ãè¾¼ã¿
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| 141 | */
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| 142 | Inline void
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| 143 | clock_write_tval(uint32_t cntv_tval){
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| 144 |
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| 145 | Asm ("msr cntp_tval_el0, %0" :: "r"(cntv_tval): "memory");
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| 146 | }
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| 147 |
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| 148 | /*
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| 149 | * ã¿ã¤ãã®æ¯è¼å¤ã®èªã¿åºã
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| 150 | */
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| 151 | Inline uint64_t
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| 152 | clock_read_cval(void){
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| 153 | uint64_t cntp_cval;
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| 154 |
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| 155 | Asm ("mrs %0, cntp_cval_el0" : "=r"(cntp_cval)
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| 156 | :: "memory");
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| 157 | return cntp_cval;
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| 158 | }
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| 159 |
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| 160 | /*
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| 161 | * ã¿ã¤ãã®æ¯è¼å¤ã®æ¸ãè¾¼ã¿
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| 162 | */
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| 163 | Inline void
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| 164 | clock_write_cval(uint64_t cntp_cval){
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| 165 |
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| 166 | Asm ("msr cntp_cval_el0, %0" :: "r"(cntp_cval): "memory");
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| 167 | }
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| 168 |
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| 169 | /*
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| 170 | * ã·ã¹ãã ã«ã¦ã³ã¿ã®ã¯ããã¯å¨æ³¢æ°ã®åå¾
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| 171 | */
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| 172 | Inline uint32_t
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| 173 | get_timer_freq(void) {
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| 174 | uint32_t freq_hz;
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| 175 |
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| 176 | Asm ("mrs %0, cntfrq_el0" : "=r"(freq_hz) :: "memory");
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| 177 | return freq_hz;
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| 178 | }
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| 179 |
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| 180 | /*
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| 181 | * ã¿ã¤ãã®èµ·åå¦ç
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| 182 | *
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| 183 | * ã¿ã¤ããåæåãï¼å¨æçãªã¿ã¤ãå²è¾¼ã¿è¦æ±ãçºçãããï¼
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| 184 | */
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| 185 | extern void target_timer_initialize(intptr_t exinf);
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| 186 |
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| 187 | /*
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| 188 | * ã¿ã¤ãã®åæ¢å¦ç
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| 189 | */
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| 190 | extern void target_timer_terminate(intptr_t exinf);
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| 191 |
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| 192 | /*
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| 193 | * ã¿ã¤ãå²è¾¼ã¿ãã³ãã©
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| 194 | */
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| 195 | extern void target_timer_handler(void);
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| 196 |
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| 197 | #endif /* TOPPERS_MACRO_ONLY */
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| 198 | #endif /* TOPPERS_PRC_TIMER_H */
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