[136] | 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) 2005-2011 by Embedded and Real-Time Systems Laboratory
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| 9 | * Graduate School of Information Science, Nagoya Univ., 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)ï½(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: mempfix.c 2632 2014-04-13 11:30:37Z ertl-hiro $
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| 56 | */
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| 57 |
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| 58 | /*
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| 59 | * åºå®é·ã¡ã¢ãªãã¼ã«æ©è½
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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 "check.h"
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| 64 | #include "task.h"
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| 65 | #include "wait.h"
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| 66 | #include "mempfix.h"
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| 67 |
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| 68 | /*
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| 69 | * ãã¬ã¼ã¹ãã°ãã¯ãã®ããã©ã«ãå®ç¾©
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| 70 | */
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| 71 | #ifndef LOG_GET_MPF_ENTER
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| 72 | #define LOG_GET_MPF_ENTER(mpfid, p_blk)
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| 73 | #endif /* LOG_GET_MPF_ENTER */
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| 74 |
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| 75 | #ifndef LOG_GET_MPF_LEAVE
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| 76 | #define LOG_GET_MPF_LEAVE(ercd, blk)
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| 77 | #endif /* LOG_GET_MPF_LEAVE */
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| 78 |
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| 79 | #ifndef LOG_PGET_MPF_ENTER
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| 80 | #define LOG_PGET_MPF_ENTER(mpfid, p_blk)
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| 81 | #endif /* LOG_PGET_MPF_ENTER */
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| 82 |
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| 83 | #ifndef LOG_PGET_MPF_LEAVE
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| 84 | #define LOG_PGET_MPF_LEAVE(ercd, blk)
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| 85 | #endif /* LOG_PGET_MPF_LEAVE */
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| 86 |
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| 87 | #ifndef LOG_TGET_MPF_ENTER
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| 88 | #define LOG_TGET_MPF_ENTER(mpfid, p_blk, tmout)
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| 89 | #endif /* LOG_TGET_MPF_ENTER */
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| 90 |
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| 91 | #ifndef LOG_TGET_MPF_LEAVE
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| 92 | #define LOG_TGET_MPF_LEAVE(ercd, blk)
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| 93 | #endif /* LOG_TGET_MPF_LEAVE */
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| 94 |
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| 95 | #ifndef LOG_REL_MPF_ENTER
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| 96 | #define LOG_REL_MPF_ENTER(mpfid, blk)
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| 97 | #endif /* LOG_REL_MPF_ENTER */
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| 98 |
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| 99 | #ifndef LOG_REL_MPF_LEAVE
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| 100 | #define LOG_REL_MPF_LEAVE(ercd)
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| 101 | #endif /* LOG_REL_MPF_LEAVE */
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| 102 |
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| 103 | #ifndef LOG_INI_MPF_ENTER
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| 104 | #define LOG_INI_MPF_ENTER(mpfid)
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| 105 | #endif /* LOG_INI_MPF_ENTER */
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| 106 |
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| 107 | #ifndef LOG_INI_MPF_LEAVE
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| 108 | #define LOG_INI_MPF_LEAVE(ercd)
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| 109 | #endif /* LOG_INI_MPF_LEAVE */
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| 110 |
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| 111 | #ifndef LOG_REF_MPF_ENTER
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| 112 | #define LOG_REF_MPF_ENTER(mpfid, pk_rmpf)
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| 113 | #endif /* LOG_REF_MPF_ENTER */
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| 114 |
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| 115 | #ifndef LOG_REF_MPF_LEAVE
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| 116 | #define LOG_REF_MPF_LEAVE(ercd, pk_rmpf)
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| 117 | #endif /* LOG_REF_MPF_LEAVE */
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| 118 |
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| 119 | /*
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| 120 | * åºå®é·ã¡ã¢ãªãã¼ã«ã®æ°
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| 121 | */
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| 122 | #define tnum_mpf ((uint_t)(tmax_mpfid - TMIN_MPFID + 1))
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| 123 |
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| 124 | /*
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| 125 | * åºå®é·ã¡ã¢ãªãã¼ã«IDããåºå®é·ã¡ã¢ãªãã¼ã«ç®¡çãããã¯ãåãåºãã
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| 126 | * ãã®ãã¯ã
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| 127 | */
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| 128 | #define INDEX_MPF(mpfid) ((uint_t)((mpfid) - TMIN_MPFID))
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| 129 | #define get_mpfcb(mpfid) (&(mpfcb_table[INDEX_MPF(mpfid)]))
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| 130 |
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| 131 | /*
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| 132 | * ç¹æ®ãªã¤ã³ããã¯ã¹å¤ã®å®ç¾©
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| 133 | */
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| 134 | #define INDEX_NULL (~0U) /* 空ããããã¯ãªã¹ãã®æå¾ */
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| 135 | #define INDEX_ALLOC (~1U) /* å²å½ã¦æ¸ã¿ã®ããã㯠*/
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| 136 |
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| 137 | /*
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| 138 | * åºå®é·ã¡ã¢ãªãã¼ã«æ©è½ã®åæå
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| 139 | */
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| 140 | #ifdef TOPPERS_mpfini
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| 141 |
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| 142 | void
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| 143 | initialize_mempfix(void)
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| 144 | {
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| 145 | uint_t i;
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| 146 | MPFCB *p_mpfcb;
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| 147 |
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| 148 | for (i = 0; i < tnum_mpf; i++) {
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| 149 | p_mpfcb = &(mpfcb_table[i]);
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| 150 | queue_initialize(&(p_mpfcb->wait_queue));
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| 151 | p_mpfcb->p_mpfinib = &(mpfinib_table[i]);
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| 152 | p_mpfcb->fblkcnt = p_mpfcb->p_mpfinib->blkcnt;
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| 153 | p_mpfcb->unused = 0U;
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| 154 | p_mpfcb->freelist = INDEX_NULL;
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| 155 | }
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| 156 | }
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| 157 |
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| 158 | #endif /* TOPPERS_mpfini */
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| 159 |
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| 160 | /*
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| 161 | * åºå®é·ã¡ã¢ãªãã¼ã«ãããããã¯ãç²å¾
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| 162 | */
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| 163 | #ifdef TOPPERS_mpfget
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| 164 |
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| 165 | void
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| 166 | get_mpf_block(MPFCB *p_mpfcb, void **p_blk)
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| 167 | {
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| 168 | uint_t blkidx;
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| 169 |
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| 170 | if (p_mpfcb->freelist != INDEX_NULL) {
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| 171 | blkidx = p_mpfcb->freelist;
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| 172 | p_mpfcb->freelist = (p_mpfcb->p_mpfinib->p_mpfmb + blkidx)->next;
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| 173 | }
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| 174 | else {
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| 175 | blkidx = p_mpfcb->unused;
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| 176 | p_mpfcb->unused++;
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| 177 | }
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| 178 | *p_blk = (void *)((char *)(p_mpfcb->p_mpfinib->mpf)
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| 179 | + p_mpfcb->p_mpfinib->blksz * blkidx);
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| 180 | p_mpfcb->fblkcnt--;
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| 181 | (p_mpfcb->p_mpfinib->p_mpfmb + blkidx)->next = INDEX_ALLOC;
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| 182 | }
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| 183 |
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| 184 | #endif /* TOPPERS_mpfget */
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| 185 |
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| 186 | /*
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| 187 | * åºå®é·ã¡ã¢ãªãããã¯ã®ç²å¾
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| 188 | */
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| 189 | #ifdef TOPPERS_get_mpf
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| 190 |
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| 191 | ER
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| 192 | get_mpf(ID mpfid, void **p_blk)
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| 193 | {
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| 194 | MPFCB *p_mpfcb;
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| 195 | WINFO_MPF winfo_mpf;
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| 196 | ER ercd;
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| 197 |
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| 198 | LOG_GET_MPF_ENTER(mpfid, p_blk);
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| 199 | CHECK_DISPATCH();
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| 200 | CHECK_MPFID(mpfid);
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| 201 | p_mpfcb = get_mpfcb(mpfid);
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| 202 |
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| 203 | t_lock_cpu();
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| 204 | if (p_mpfcb->fblkcnt > 0) {
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| 205 | get_mpf_block(p_mpfcb, p_blk);
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| 206 | ercd = E_OK;
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| 207 | }
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| 208 | else {
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| 209 | p_runtsk->tstat = (TS_WAITING | TS_WAIT_MPF);
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| 210 | wobj_make_wait((WOBJCB *) p_mpfcb, (WINFO_WOBJ *) &winfo_mpf);
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| 211 | dispatch();
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| 212 | ercd = winfo_mpf.winfo.wercd;
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| 213 | if (ercd == E_OK) {
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| 214 | *p_blk = winfo_mpf.blk;
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| 215 | }
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| 216 | }
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| 217 | t_unlock_cpu();
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| 218 |
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| 219 | error_exit:
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| 220 | LOG_GET_MPF_LEAVE(ercd, *p_blk);
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| 221 | return(ercd);
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| 222 | }
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| 223 |
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| 224 | #endif /* TOPPERS_get_mpf */
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| 225 |
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| 226 | /*
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| 227 | * åºå®é·ã¡ã¢ãªãããã¯ã®ç²å¾ï¼ãã¼ãªã³ã°ï¼
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| 228 | */
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| 229 | #ifdef TOPPERS_pget_mpf
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| 230 |
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| 231 | ER
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| 232 | pget_mpf(ID mpfid, void **p_blk)
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| 233 | {
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| 234 | MPFCB *p_mpfcb;
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| 235 | ER ercd;
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| 236 |
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| 237 | LOG_PGET_MPF_ENTER(mpfid, p_blk);
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| 238 | CHECK_TSKCTX_UNL();
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| 239 | CHECK_MPFID(mpfid);
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| 240 | p_mpfcb = get_mpfcb(mpfid);
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| 241 |
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| 242 | t_lock_cpu();
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| 243 | if (p_mpfcb->fblkcnt > 0) {
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| 244 | get_mpf_block(p_mpfcb, p_blk);
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| 245 | ercd = E_OK;
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| 246 | }
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| 247 | else {
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| 248 | ercd = E_TMOUT;
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| 249 | }
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| 250 | t_unlock_cpu();
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| 251 |
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| 252 | error_exit:
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| 253 | LOG_PGET_MPF_LEAVE(ercd, *p_blk);
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| 254 | return(ercd);
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| 255 | }
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| 256 |
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| 257 | #endif /* TOPPERS_pget_mpf */
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| 258 |
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| 259 | /*
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| 260 | * åºå®é·ã¡ã¢ãªãããã¯ã®ç²å¾ï¼ã¿ã¤ã ã¢ã¦ãããï¼
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| 261 | */
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| 262 | #ifdef TOPPERS_tget_mpf
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| 263 |
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| 264 | ER
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| 265 | tget_mpf(ID mpfid, void **p_blk, TMO tmout)
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| 266 | {
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| 267 | MPFCB *p_mpfcb;
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| 268 | WINFO_MPF winfo_mpf;
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| 269 | TMEVTB tmevtb;
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| 270 | ER ercd;
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| 271 |
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| 272 | LOG_TGET_MPF_ENTER(mpfid, p_blk, tmout);
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| 273 | CHECK_DISPATCH();
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| 274 | CHECK_MPFID(mpfid);
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| 275 | CHECK_TMOUT(tmout);
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| 276 | p_mpfcb = get_mpfcb(mpfid);
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| 277 |
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| 278 | t_lock_cpu();
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| 279 | if (p_mpfcb->fblkcnt > 0) {
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| 280 | get_mpf_block(p_mpfcb, p_blk);
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| 281 | ercd = E_OK;
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| 282 | }
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| 283 | else if (tmout == TMO_POL) {
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| 284 | ercd = E_TMOUT;
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| 285 | }
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| 286 | else {
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| 287 | p_runtsk->tstat = (TS_WAITING | TS_WAIT_MPF);
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| 288 | wobj_make_wait_tmout((WOBJCB *) p_mpfcb, (WINFO_WOBJ *) &winfo_mpf,
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| 289 | &tmevtb, tmout);
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| 290 | dispatch();
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| 291 | ercd = winfo_mpf.winfo.wercd;
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| 292 | if (ercd == E_OK) {
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| 293 | *p_blk = winfo_mpf.blk;
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| 294 | }
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| 295 | }
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| 296 | t_unlock_cpu();
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| 297 |
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| 298 | error_exit:
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| 299 | LOG_TGET_MPF_LEAVE(ercd, *p_blk);
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| 300 | return(ercd);
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| 301 | }
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| 302 |
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| 303 | #endif /* TOPPERS_tget_mpf */
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| 304 |
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| 305 | /*
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| 306 | * åºå®é·ã¡ã¢ãªãããã¯ã®è¿å´
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| 307 | */
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| 308 | #ifdef TOPPERS_rel_mpf
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| 309 |
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| 310 | ER
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| 311 | rel_mpf(ID mpfid, void *blk)
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| 312 | {
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| 313 | MPFCB *p_mpfcb;
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| 314 | SIZE blkoffset;
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| 315 | uint_t blkidx;
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| 316 | TCB *p_tcb;
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| 317 | ER ercd;
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| 318 |
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| 319 | LOG_REL_MPF_ENTER(mpfid, blk);
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| 320 | CHECK_TSKCTX_UNL();
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| 321 | CHECK_MPFID(mpfid);
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| 322 | p_mpfcb = get_mpfcb(mpfid);
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| 323 | CHECK_PAR(p_mpfcb->p_mpfinib->mpf <= blk);
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| 324 | blkoffset = ((char *) blk) - (char *)(p_mpfcb->p_mpfinib->mpf);
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| 325 | CHECK_PAR(blkoffset % p_mpfcb->p_mpfinib->blksz == 0U);
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| 326 | CHECK_PAR(blkoffset / p_mpfcb->p_mpfinib->blksz < p_mpfcb->unused);
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| 327 | blkidx = (uint_t)(blkoffset / p_mpfcb->p_mpfinib->blksz);
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| 328 | CHECK_PAR((p_mpfcb->p_mpfinib->p_mpfmb + blkidx)->next == INDEX_ALLOC);
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| 329 |
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| 330 | t_lock_cpu();
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| 331 | if (!queue_empty(&(p_mpfcb->wait_queue))) {
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| 332 | p_tcb = (TCB *) queue_delete_next(&(p_mpfcb->wait_queue));
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| 333 | ((WINFO_MPF *)(p_tcb->p_winfo))->blk = blk;
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| 334 | if (wait_complete(p_tcb)) {
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| 335 | dispatch();
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| 336 | }
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| 337 | ercd = E_OK;
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| 338 | }
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| 339 | else {
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| 340 | p_mpfcb->fblkcnt++;
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| 341 | (p_mpfcb->p_mpfinib->p_mpfmb + blkidx)->next = p_mpfcb->freelist;
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| 342 | p_mpfcb->freelist = blkidx;
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| 343 | ercd = E_OK;
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| 344 | }
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| 345 | t_unlock_cpu();
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| 346 |
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| 347 | error_exit:
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| 348 | LOG_REL_MPF_LEAVE(ercd);
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| 349 | return(ercd);
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| 350 | }
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| 351 |
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| 352 | #endif /* TOPPERS_rel_mpf */
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| 353 |
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| 354 | /*
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| 355 | * åºå®é·ã¡ã¢ãªãã¼ã«ã®ååæå
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| 356 | */
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| 357 | #ifdef TOPPERS_ini_mpf
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| 358 |
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| 359 | ER
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| 360 | ini_mpf(ID mpfid)
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| 361 | {
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| 362 | MPFCB *p_mpfcb;
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| 363 | bool_t dspreq;
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| 364 | ER ercd;
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| 365 |
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| 366 | LOG_INI_MPF_ENTER(mpfid);
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| 367 | CHECK_TSKCTX_UNL();
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| 368 | CHECK_MPFID(mpfid);
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| 369 | p_mpfcb = get_mpfcb(mpfid);
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| 370 |
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| 371 | t_lock_cpu();
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| 372 | dspreq = init_wait_queue(&(p_mpfcb->wait_queue));
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| 373 | p_mpfcb->fblkcnt = p_mpfcb->p_mpfinib->blkcnt;
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| 374 | p_mpfcb->unused = 0U;
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| 375 | p_mpfcb->freelist = INDEX_NULL;
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| 376 | if (dspreq) {
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| 377 | dispatch();
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| 378 | }
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| 379 | ercd = E_OK;
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| 380 | t_unlock_cpu();
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| 381 |
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| 382 | error_exit:
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| 383 | LOG_INI_MPF_LEAVE(ercd);
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| 384 | return(ercd);
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| 385 | }
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| 386 |
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| 387 | #endif /* TOPPERS_ini_mpf */
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| 388 |
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| 389 | /*
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| 390 | * åºå®é·ã¡ã¢ãªãã¼ã«ã®ç¶æ
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| 391 | åç
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| 392 | §
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| 393 | */
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| 394 | #ifdef TOPPERS_ref_mpf
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| 395 |
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| 396 | ER
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| 397 | ref_mpf(ID mpfid, T_RMPF *pk_rmpf)
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| 398 | {
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| 399 | MPFCB *p_mpfcb;
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| 400 | ER ercd;
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| 401 |
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| 402 | LOG_REF_MPF_ENTER(mpfid, pk_rmpf);
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| 403 | CHECK_TSKCTX_UNL();
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| 404 | CHECK_MPFID(mpfid);
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| 405 | p_mpfcb = get_mpfcb(mpfid);
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| 406 |
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| 407 | t_lock_cpu();
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| 408 | pk_rmpf->wtskid = wait_tskid(&(p_mpfcb->wait_queue));
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| 409 | pk_rmpf->fblkcnt = p_mpfcb->fblkcnt;
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| 410 | ercd = E_OK;
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| 411 | t_unlock_cpu();
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| 412 |
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| 413 | error_exit:
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| 414 | LOG_REF_MPF_LEAVE(ercd, pk_rmpf);
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| 415 | return(ercd);
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| 416 | }
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| 417 |
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| 418 | #endif /* TOPPERS_ref_mpf */
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