[363] | 1 | /*
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| 2 | * TOPPERS/JSP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Just 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 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)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 13 | * ã«ãã£ã¦å
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| 14 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 15 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 16 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 17 | å¸ï¼ä»¥ä¸ï¼
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| 18 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 19 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 20 | * 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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| 21 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 22 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 23 | * ç¨ã§ããå½¢ã§åé
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| 24 | å¸ããå ´åã«ã¯ï¼åé
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| 25 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 26 | * è
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| 27 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 28 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 29 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 30 | * ç¨ã§ããªãå½¢ã§åé
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| 31 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 32 | * ã¨ï¼
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| 33 | * (a) åé
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| 34 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 35 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 36 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 37 | * (b) åé
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| 38 | å¸ã®å½¢æ
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| 39 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 40 | * å ±åãããã¨ï¼
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| 41 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 42 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 43 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 44 | 責ãããã¨ï¼
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| 45 | *
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| 46 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 47 | ã
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| 48 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 49 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 50 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 51 | *
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| 52 | * @(#) $Id: mempfix.c,v 1.12 2005/11/12 14:55:23 hiro Exp $
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| 53 | */
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| 54 |
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| 55 | /*
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| 56 | * åºå®é·ã¡ã¢ãªãã¼ã«æ©è½
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| 57 | */
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| 58 |
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| 59 | #include "jsp_kernel.h"
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| 60 | #include "check.h"
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| 61 | #include "task.h"
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| 62 | #include "wait.h"
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| 63 | #include "mempfix.h"
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| 64 |
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| 65 | /*
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| 66 | * åºå®é·ã¡ã¢ãªãã¼ã«IDã®æ大å¤ï¼kernel_cfg.cï¼
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| 67 | */
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| 68 | extern const ID tmax_mpfid;
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| 69 |
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| 70 | /*
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| 71 | * åºå®é·ã¡ã¢ãªãã¼ã«åæåãããã¯ã®ã¨ãªã¢ï¼kernel_cfg.cï¼
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| 72 | */
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| 73 | extern const MPFINIB mpfinib_table[];
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| 74 |
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| 75 | /*
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| 76 | * åºå®é·ã¡ã¢ãªãã¼ã«ç®¡çãããã¯ã®ã¨ãªã¢ï¼kernel_cfg.cï¼
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| 77 | */
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| 78 | extern MPFCB mpfcb_table[];
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| 79 |
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| 80 | /*
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| 81 | * åºå®é·ã¡ã¢ãªãã¼ã«ã®æ°
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| 82 | */
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| 83 | #define TNUM_MPF ((UINT)(tmax_mpfid - TMIN_MPFID + 1))
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| 84 |
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| 85 | /*
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| 86 | * åºå®é·ã¡ã¢ãªãã¼ã«IDããåºå®é·ã¡ã¢ãªãã¼ã«ç®¡çãããã¯ãåãåºãã
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| 87 | * ãã®ãã¯ã
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| 88 | */
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| 89 | #define INDEX_MPF(mpfid) ((UINT)((mpfid) - TMIN_MPFID))
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| 90 | #define get_mpfcb(mpfid) (&(mpfcb_table[INDEX_MPF(mpfid)]))
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| 91 |
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| 92 | /*
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| 93 | * åºå®é·ã¡ã¢ãªãã¼ã«å¾
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| 94 | ã¡æ
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| 95 | å ±ãããã¯ã®å®ç¾©
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| 96 | */
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| 97 | typedef struct fixed_memorypool_waiting_information {
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| 98 | WINFO winfo; /* æ¨æºã®å¾
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| 99 | ã¡æ
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| 100 | å ±ããã㯠*/
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| 101 | WOBJCB *wobjcb; /* å¾
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| 102 | ã¡ãªãã¸ã§ã¯ãã®ç®¡çããã㯠*/
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| 103 | VP blk; /* ç²å¾ããã¡ã¢ãªããã㯠*/
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| 104 | } WINFO_MPF;
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| 105 |
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| 106 | /*
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| 107 | * åºå®é·ã¡ã¢ãªãã¼ã«æ©è½ã®åæå
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| 108 | */
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| 109 | #ifdef __mpfini
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| 110 |
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| 111 | void
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| 112 | mempfix_initialize()
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| 113 | {
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| 114 | UINT i;
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| 115 | MPFCB *mpfcb;
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| 116 |
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| 117 | for (mpfcb = mpfcb_table, i = 0; i < TNUM_MPF; mpfcb++, i++) {
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| 118 | queue_initialize(&(mpfcb->wait_queue));
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| 119 | mpfcb->mpfinib = &(mpfinib_table[i]);
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| 120 | mpfcb->unused = mpfcb->mpfinib->mpf;
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| 121 | mpfcb->freelist = NULL;
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| 122 | }
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| 123 | }
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| 124 |
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| 125 | #endif /* __mpfini */
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| 126 |
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| 127 | /*
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| 128 | * åºå®é·ã¡ã¢ãªãã¼ã«ãããããã¯ãç²å¾
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| 129 | */
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| 130 | #ifdef __mpfget
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| 131 |
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| 132 | BOOL
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| 133 | mempfix_get_block(MPFCB *mpfcb, VP *p_blk)
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| 134 | {
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| 135 | FREEL *free;
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| 136 |
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| 137 | if (mpfcb->freelist != NULL) {
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| 138 | free = mpfcb->freelist;
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| 139 | mpfcb->freelist = free->next;
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| 140 | *p_blk = (VP) free;
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| 141 | return(TRUE);
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| 142 | }
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| 143 | else if (mpfcb->unused < mpfcb->mpfinib->limit) {
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| 144 | *p_blk = mpfcb->unused;
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| 145 | mpfcb->unused = (VP)((char *)(mpfcb->unused)
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| 146 | + mpfcb->mpfinib->blksz);
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| 147 | return(TRUE);
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| 148 | }
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| 149 | return(FALSE);
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| 150 | }
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| 151 |
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| 152 | #endif /* __mpfget */
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| 153 |
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| 154 | /*
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| 155 | * åºå®é·ã¡ã¢ãªãããã¯ã®ç²å¾
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| 156 | */
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| 157 | #ifdef __get_mpf
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| 158 |
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| 159 | SYSCALL ER
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| 160 | get_mpf(ID mpfid, VP *p_blk)
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| 161 | {
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| 162 | MPFCB *mpfcb;
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| 163 | WINFO_MPF winfo;
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| 164 | ER ercd;
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| 165 |
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| 166 | LOG_GET_MPF_ENTER(mpfid, p_blk);
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| 167 | CHECK_DISPATCH();
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| 168 | CHECK_MPFID(mpfid);
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| 169 | mpfcb = get_mpfcb(mpfid);
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| 170 |
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| 171 | t_lock_cpu();
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| 172 | if (mempfix_get_block(mpfcb, p_blk)) {
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| 173 | ercd = E_OK;
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| 174 | }
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| 175 | else {
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| 176 | wobj_make_wait((WOBJCB *) mpfcb, (WINFO_WOBJ *) &winfo);
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| 177 | dispatch();
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| 178 | ercd = winfo.winfo.wercd;
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| 179 | if (ercd == E_OK) {
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| 180 | *p_blk = winfo.blk;
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| 181 | }
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| 182 | }
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| 183 | t_unlock_cpu();
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| 184 |
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| 185 | exit:
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| 186 | LOG_GET_MPF_LEAVE(ercd, *p_blk);
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| 187 | return(ercd);
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| 188 | }
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| 189 |
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| 190 | #endif /* __get_mpf */
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| 191 |
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| 192 | /*
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| 193 | * åºå®é·ã¡ã¢ãªãããã¯ã®ç²å¾ï¼ãã¼ãªã³ã°ï¼
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| 194 | */
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| 195 | #ifdef __pget_mpf
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| 196 |
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| 197 | SYSCALL ER
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| 198 | pget_mpf(ID mpfid, VP *p_blk)
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| 199 | {
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| 200 | MPFCB *mpfcb;
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| 201 | ER ercd;
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| 202 |
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| 203 | LOG_PGET_MPF_ENTER(mpfid, p_blk);
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| 204 | CHECK_TSKCTX_UNL();
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| 205 | CHECK_MPFID(mpfid);
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| 206 | mpfcb = get_mpfcb(mpfid);
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| 207 |
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| 208 | t_lock_cpu();
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| 209 | if (mempfix_get_block(mpfcb, p_blk)) {
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| 210 | ercd = E_OK;
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| 211 | }
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| 212 | else {
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| 213 | ercd = E_TMOUT;
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| 214 | }
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| 215 | t_unlock_cpu();
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| 216 |
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| 217 | exit:
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| 218 | LOG_PGET_MPF_LEAVE(ercd, *p_blk);
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| 219 | return(ercd);
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| 220 | }
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| 221 |
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| 222 | #endif /* __pget_mpf */
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| 223 |
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| 224 | /*
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| 225 | * åºå®é·ã¡ã¢ãªãããã¯ã®ç²å¾ï¼ã¿ã¤ã ã¢ã¦ãããï¼
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| 226 | */
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| 227 | #ifdef __tget_mpf
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| 228 |
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| 229 | SYSCALL ER
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| 230 | tget_mpf(ID mpfid, VP *p_blk, TMO tmout)
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| 231 | {
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| 232 | MPFCB *mpfcb;
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| 233 | WINFO_MPF winfo;
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| 234 | TMEVTB tmevtb;
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| 235 | ER ercd;
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| 236 |
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| 237 | LOG_TGET_MPF_ENTER(mpfid, p_blk, tmout);
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| 238 | CHECK_DISPATCH();
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| 239 | CHECK_MPFID(mpfid);
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| 240 | CHECK_TMOUT(tmout);
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| 241 | mpfcb = get_mpfcb(mpfid);
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| 242 |
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| 243 | t_lock_cpu();
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| 244 | if (mempfix_get_block(mpfcb, p_blk)) {
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| 245 | ercd = E_OK;
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| 246 | }
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| 247 | else if (tmout == TMO_POL) {
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| 248 | ercd = E_TMOUT;
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| 249 | }
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| 250 | else {
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| 251 | wobj_make_wait_tmout((WOBJCB *) mpfcb, (WINFO_WOBJ *) &winfo,
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| 252 | &tmevtb, tmout);
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| 253 | dispatch();
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| 254 | ercd = winfo.winfo.wercd;
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| 255 | if (ercd == E_OK) {
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| 256 | *p_blk = winfo.blk;
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| 257 | }
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| 258 | }
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| 259 | t_unlock_cpu();
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| 260 |
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| 261 | exit:
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| 262 | LOG_TGET_MPF_LEAVE(ercd, *p_blk);
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| 263 | return(ercd);
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| 264 | }
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| 265 |
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| 266 | #endif /* __tget_mpf */
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| 267 |
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| 268 | /*
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| 269 | * åºå®é·ã¡ã¢ãªãããã¯ã®è¿å´
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| 270 | */
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| 271 | #ifdef __rel_mpf
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| 272 |
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| 273 | SYSCALL ER
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| 274 | rel_mpf(ID mpfid, VP blk)
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| 275 | {
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| 276 | MPFCB *mpfcb;
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| 277 | TCB *tcb;
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| 278 | FREEL *free;
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| 279 | ER ercd;
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| 280 |
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| 281 | LOG_REL_MPF_ENTER(mpfid, blk);
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| 282 | CHECK_TSKCTX_UNL();
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| 283 | CHECK_MPFID(mpfid);
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| 284 | mpfcb = get_mpfcb(mpfid);
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| 285 | CHECK_PAR(mpfcb->mpfinib->mpf <= blk
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| 286 | && blk < mpfcb->mpfinib->limit
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| 287 | && ((char *)(blk) - (char *)(mpfcb->mpfinib->mpf))
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| 288 | % mpfcb->mpfinib->blksz == 0);
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| 289 |
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| 290 | t_lock_cpu();
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| 291 | if (!(queue_empty(&(mpfcb->wait_queue)))) {
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| 292 | tcb = (TCB *) queue_delete_next(&(mpfcb->wait_queue));
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| 293 | ((WINFO_MPF *)(tcb->winfo))->blk = blk;
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| 294 | if (wait_complete(tcb)) {
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| 295 | dispatch();
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| 296 | }
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| 297 | ercd = E_OK;
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| 298 | }
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| 299 | else {
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| 300 | free = (FREEL *) blk;
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| 301 | free->next = mpfcb->freelist;
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| 302 | mpfcb->freelist = free;
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| 303 | ercd = E_OK;
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| 304 | }
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| 305 | t_unlock_cpu();
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| 306 |
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| 307 | exit:
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| 308 | LOG_REL_MPF_LEAVE(ercd);
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| 309 | return(ercd);
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| 310 | }
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| 311 |
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| 312 | #endif /* __rel_mpf */
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