[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) 2000-2004 by Embedded and Real-Time Systems Laboratory
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| 7 | * Toyohashi Univ. of Technology, JAPAN
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| 8 | * Copyright (C) 2001-2004 by Dep. of Computer Science and Engineering
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| 9 | * Tomakomai National College of Technology, JAPAN
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| 10 | * Copyright (C) 2001-2004 by Industrial Technology Institute,
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| 11 | * Miyagi Prefectural Government, JAPAN
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| 12 | *
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| 13 | * ä¸è¨èä½æ¨©è
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| 14 | ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 15 | * ã«ãã£ã¦å
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| 16 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 17 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 18 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 19 | å¸ï¼ä»¥ä¸ï¼
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| 20 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 21 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 22 | * 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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| 23 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 24 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 25 | * ç¨ã§ããå½¢ã§åé
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| 26 | å¸ããå ´åã«ã¯ï¼åé
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| 27 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 28 | * è
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| 29 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 30 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 31 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 32 | * ç¨ã§ããªãå½¢ã§åé
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| 33 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 34 | * ã¨ï¼
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| 35 | * (a) åé
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| 36 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 37 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 38 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 39 | * (b) åé
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| 40 | å¸ã®å½¢æ
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| 41 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 42 | * å ±åãããã¨ï¼
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| 43 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 44 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 45 | ããã³TOPPERSããã¸ã§ã¯ããå
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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¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 51 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 52 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 53 | */
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| 54 |
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| 55 | #define _MACRO_ONLY
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| 56 |
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| 57 | #include "jsp_kernel.h"
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| 58 | #include "offset.h"
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| 59 |
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| 60 | .h8300s
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| 61 | .text
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| 62 | .align 2
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| 63 |
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| 64 | /*
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| 65 | * ã¿ã¹ã¯ãã£ã¹ãããã£
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| 66 | * ã»dispatch ã¯ãå²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ = 0ãCPUããã¯ç¶æ
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| 67 | ï¼å²è¾¼ã¿ç¦æ¢ç¶æ
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| 68 | ï¼ã§
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| 69 | * å¼ã³åºããªããã°ãªããªãã
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| 70 | * ã»exit_and_dispatch ã¯ï¼å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ = 0ãCPUããã¯ç¶æ
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| 71 | ï¼å²è¾¼ã¿ç¦æ¢
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| 72 | * ç¶æ
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| 73 | ï¼ã§å¼ã³åºãã®ãååã§ãããããããã«ã¼ãã«èµ·åæã«å¯¾å¿ããããï¼
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| 74 | * å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ = 1 ã§å¼ã³åºããå ´åã«ã対å¿ãã¦ããã
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| 75 | */
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| 76 |
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| 77 | .global _dispatch
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| 78 | .global _exit_and_dispatch
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| 79 |
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| 80 | /* ã¿ã¹ã¯ãã£ã¹ãããã£ãæ示çã«å¼ã³åºãæ */
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| 81 | _dispatch:
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| 82 | push.l er2 /* er2ã6 ãä¿å */
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| 83 | push.l er3
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| 84 | push.l er4
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| 85 | push.l er5
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| 86 | push.l er6
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| 87 |
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| 88 | mov.l @_runtsk, er0 /* er0 = runtsk */
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| 89 | mov.l sp, @(TCB_sp, er0) /* runtsk->sp = sp
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| 90 | (ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿ãä¿å) */
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| 91 | mov.l #dispatch_r, er1
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| 92 | mov.l er1, @(TCB_pc, er0) /* runtsk->pc = dispatch_r
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| 93 | (ã¿ã¹ã¯ã®å®è¡åéçªå°ãä¿å) */
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| 94 |
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| 95 | bra dispatcher_1
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| 96 |
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| 97 | /* ç¾å¨å®è¡ä¸ã®ã³ã³ããã¹ããæ¨ã¦ã¦ãã¿ã¹ã¯ãã£ã¹ãããã£ãå¼ã³åºãæ */
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| 98 | _exit_and_dispatch:
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| 99 | sub.l er0, er0
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| 100 | mov.l er0, @_intnest /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ = 0 */
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| 101 |
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| 102 | dispatcher_1:
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| 103 | /* ããã«ã¯ CPUããã¯ï¼å²ãè¾¼ã¿ç¦æ¢ï¼ã§æ¥ãã㨠*/
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| 104 | mov.l @_schedtsk, er0 /* er0 = schedtsk */
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| 105 | or.l er0, er0 /* å¤å®é¨å (å®è¡å¯è½ã¿ã¹ã¯ã®æç¡) */
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| 106 | beq dispatcher_2 /* schedtsk ãç¡ããªããå²è¾¼ã¿å¾
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| 107 | ã¡ã¸ */
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| 108 |
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| 109 | mov.l er0, @_runtsk /* runtsk = er0 (= schedtsk)
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| 110 | (ã¿ã¹ã¯ã¹ã¤ããã®å®è¡) */
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| 111 | mov.l @(TCB_sp, er0), sp /* sp = runtsk->sp
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| 112 | (ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿å¾©å
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| 113 | ) */
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| 114 | mov.l @(TCB_pc, er0), er0 /* er0 = runtsk->pc
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| 115 | (ã¿ã¹ã¯ã®å®è¡åéçªå°ã®åå¾) */
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| 116 | /* å®è¡åéçªå°ã¯ä»¥ä¸ã®3éã
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| 117 | ã»ãã£ã¹ãããã£ã®åºå£ dispatch_r
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| 118 | ã»å²è¾¼ã¿ï¼ä¾å¤ã®åºå£ ret_int_r
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| 119 | ã»ã¿ã¹ã¯èµ·åç´å¾ activate_r
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| 120 | */
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| 121 |
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| 122 | jmp @er0 /* ã¿ã¹ã¯ã®å®è¡åéçªå°ã¸ã¸ã£ã³ã */
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| 123 |
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| 124 | /*
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| 125 | * å®è¡ãã¹ãã¿ã¹ã¯ãç¾ããã¾ã§å¾
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| 126 | ã¤å¦ç
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| 127 | * ããã§ã³ã³ããã¹ããåãæããã®ã¯ï¼
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| 128 | * ã»ããã§çºçããå²è¾¼ã¿å¦çã«ã©ã®ã¹ã¿ãã¯ã使ããã¨ããåé¡ã®è§£æ±º
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| 129 | * ã»å²è¾¼ã¿ãã³ãã©å
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| 130 | ã§ã®ã¿ã¹ã¯ãã£ã¹ãããã®é²æ¢
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| 131 | * ã¨ããäºã¤ã®æå³ãããï¼
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| 132 | */
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| 133 | dispatcher_2:
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| 134 | sub.l er0, er0
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| 135 | mov.l er0, @_runtsk /* runtsk = NULL */
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| 136 |
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| 137 | mov.l #STACKTOP, sp /* å²è¾¼ã¿ã¹ã¿ãã¯ã«åæ¿ */
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| 138 |
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| 139 | sub.l er0, er0
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| 140 | inc.l #1, er0
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| 141 | mov.l er0, @_intnest /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ = 1 */
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| 142 |
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| 143 | dispatcher_2_enable_interrupt:
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| 144 | #ifdef SUPPORT_CHG_IPM
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| 145 | ldc.b @_task_intmask, exr /* unlock_cpuç¸å½(å²è¾¼ã¿è¨±å¯) */
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| 146 | #else /* SUPPORT_CHG_IPM */
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| 147 | ldc.b #0, exr /* unlock_cpuç¸å½(å²è¾¼ã¿è¨±å¯) */
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| 148 | #endif /* SUPPORT_CHG_IPM */
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| 149 | sleep /* å²è¾¼ã¿å¾
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| 150 | ã¡ */
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| 151 | ldc.b #MAX_IPM, exr /* lock_cpu ç¸å½ (å²è¾¼ã¿ç¦æ¢) */
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| 152 |
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| 153 | mov.l @_reqflg, er0 /* er0 = reqflg */
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| 154 | or.l er0, er0 /* å¤å®é¨å (ãã£ã¹ãããè¦æ±) */
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| 155 | beq dispatcher_2_enable_interrupt
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| 156 | /* ãã£ã¹ãããè¦æ±ãç¡ãæã
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| 157 | ã«ã¼ãã®å
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| 158 | é ã¸ã¸ã£ã³ã */
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| 159 |
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| 160 | sub.l er0, er0 /* er0 = 0 (= NULL) */
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| 161 | mov.l er0, @_reqflg /* reqflg = NULL (reqflgãã¯ãªã¢) */
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| 162 | mov.l er0, @_intnest /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ = 0 */
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| 163 |
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| 164 | bra dispatcher_1 /* ãã£ã¹ãããå¦çã¸ã¸ã£ã³ã */
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| 165 |
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| 166 | /*
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| 167 | * ã¿ã¹ã¯ã³ã³ããã¹ãã¸ã®å¾©å¸°å¦çï¼ãã£ã¹ãããã£åºå£å¦çï¼
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| 168 | */
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| 169 | dispatch_r:
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| 170 | pop.l er6 /* er2ã6 ã復å
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| 171 | */
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| 172 | pop.l er5
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| 173 | pop.l er4
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| 174 | pop.l er3
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| 175 | pop.l er2
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| 176 |
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| 177 | /* ã¿ã¹ã¯ä¾å¤å¦çè¦æ±ã®ãã§ã㯠*/
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| 178 | mov.l @_runtsk, er0 /* er0 = runtsk */
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| 179 |
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| 180 | mov.b @(TCB_enatex, er0), r1l /* r1l = runtsk->enatex */
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| 181 | btst #TCB_enatex_bit, r1l /* TCB_enatex == 1 ãï¼ */
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| 182 | beq dispatch_r_1 /* ã¿ã¹ã¯ä¾å¤å¦çç¦æ¢ã®æãã¸ã£ã³ã */
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| 183 |
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| 184 | mov.l @(TCB_texptn, er0), er1 /* er1 = runtsk->texptn */
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| 185 | beq dispatch_r_1 /* ã¿ã¹ã¯ä¾å¤è¦æ±ãç¡ãæãã¸ã£ã³ã */
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| 186 |
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| 187 | jmp @_call_texrtn /* ã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³ã®å¼åº */
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| 188 |
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| 189 | dispatch_r_1:
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| 190 | rts /* dispatch å¼ã³åºãåæã¸æ»ã */
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| 191 |
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| 192 | /*============================================================================*/
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| 193 |
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| 194 | /*
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| 195 | * å²è¾¼ã¿ãã³ãã©åºå
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| 196 | ¥å£å¦ç
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| 197 | * ããã«æ¥ãã¨ãã¯ãCPU ããã¯ç¶æ
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| 198 | ã§ã
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| 199 | * er0(r0l) : å²è¾¼ã¿è¦æ±å¾ã®å²ãè¾¼ã¿ã¬ãã«ã®å¤
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| 200 | * er1 : å²è¾¼ã¿ãã³ãã©ã®ã¢ãã¬ã¹
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| 201 | * ã代å
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| 202 | ¥ããã¦ãããï¼er0, er1 ã¯ã¹ã¿ãã¯ã«ä¿åæ¸ã¿ï¼
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| 203 | */
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| 204 |
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| 205 | .global ret_main
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| 206 | .global _ret_int_r /* monitor åã */
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| 207 |
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| 208 | ret_main:
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| 209 | push.l er2 /* æ®ãã®ã¬ã¸ã¹ã¿ãä¿å */
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| 210 | push.l er3
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| 211 | push.l er4
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| 212 | push.l er5
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| 213 | push.l er6
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| 214 | /* ãããããã¨ãH8S/2600 ã«ããã macl, mach ã¬ã¸ã¹ã¿ã®ä¿åã
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| 215 | ããã§è¡ãå¿
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| 216 | è¦ãããããç¥ãã¾ãããï¼å¾©å¸°æãåæ§ãï¼
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| 217 | éçºç°å¢ã®å¶éã«ããã確èªã§ãã¦ãã¾ããã */
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| 218 |
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| 219 | mov.l @_intnest, er2 /* er2 = intnest */
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| 220 | mov.l er2, er3 /* er3(= er2)ã¯ã次ã®å¦çã§å©ç¨ããã */
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| 221 | inc.l #1, er2 /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ += 1 */
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| 222 | mov.l er2, @_intnest
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| 223 |
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| 224 | or.l er3, er3 /* å¤å®é¨å
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| 225 | (å²è¾¼ã¿çºçæã®ã³ã³ããã¹ã) */
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| 226 | beq first_exception /* å段ã®å²è¾¼ã¿ã®æãã¸ã£ã³ã */
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| 227 |
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| 228 | /* å¤éå²è¾¼ã¿ã®å¦ç */
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| 229 | multipul_exception:
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| 230 | ldc.b r0l, exr /* (ç¾å¨ã®å²è¾¼ã¿ã¬ãã«ä»¥ä¸)å²è¾¼ã¿è¨±å¯ */
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| 231 |
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| 232 | jsr @er1 /* å²è¾¼ã¿ãã³ãã©å¼åº */
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| 233 |
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| 234 | ldc.b #MAX_IPM, exr /* lock_cpu ç¸å½ (å²è¾¼ã¿ç¦æ¢) */
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| 235 |
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| 236 | mov.l @_intnest, er0 /* er0 = intnest */
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| 237 | dec.l #1, er0 /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ -= 1 */
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| 238 | mov.l er0, @_intnest
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| 239 |
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| 240 | jmp ret_to_task_int
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| 241 |
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| 242 | /* å段ã®å²è¾¼ã¿ã®å ´å */
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| 243 | first_exception:
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| 244 |
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| 245 | mov.l sp, er2 /* er2 = ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿ */
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| 246 | mov.l #STACKTOP, sp /* å²è¾¼ã¿ã¹ã¿ãã¯ã«åæ¿ */
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| 247 | push.l er2 /* ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿ã
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| 248 | å²è¾¼ã¿ã¹ã¿ãã¯ã«éé¿ */
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| 249 |
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| 250 | ldc.b r0l, exr /* (ç¾å¨ã®å²è¾¼ã¿ã¬ãã«ä»¥ä¸)å²è¾¼ã¿è¨±å¯ */
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| 251 |
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| 252 | jsr @er1 /* å²è¾¼ã¿ãã³ãã©å¼åº */
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| 253 |
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| 254 | ldc.b #MAX_IPM, exr /* lock_cpu ç¸å½ (å²è¾¼ã¿ç¦æ¢) */
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| 255 |
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| 256 | mov.l @sp, sp /* ã¿ã¹ã¯ã¹ã¿ãã¯ã«åæ¿ */
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| 257 |
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| 258 | mov.l @_intnest, er0 /* er0 = intnest */
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| 259 | dec.l #1, er0 /* å²è¾¼ã¿ãã¹ãã«ã¦ã³ã¿ -= 1 */
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| 260 | mov.l er0, @_intnest
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| 261 |
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| 262 | /* ãã£ã¹ãããè¦æ±/ã¿ã¹ã¯ä¾å¤å¦çè¦æ±(reqflg)ã®å¤å® */
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| 263 | mov.l @_reqflg, er0 /* er0 = reqflg */
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| 264 | or.l er0, er0 /* å¤å®é¨å */
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| 265 | bne occur_dispatch_or_tsk_exception
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| 266 | /* reqflg = TRUE ã®æãã¸ã£ã³ã */
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| 267 | /* ä¸è¨ã®æ¡ä»¶ããOR ã§æç«ã®æ
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| 268 | ã»é
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| 269 | 延ãã£ã¹ããããçºç
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| 270 | ã»ã¿ã¹ã¯ä¾å¤å¦çè¦æ±ãçºç */
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| 271 |
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| 272 | /* ã¬ã¸ã¹ã¿ã®å¾©å
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| 273 | */
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| 274 | ret_to_task_int:
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| 275 | pop.l er6 /* +0:er6 */
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| 276 | pop.l er5 /* +4:er5 */
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| 277 | pop.l er4 /* +8:er4 */
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| 278 | pop.l er3 /* +12:er3 */
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| 279 | pop.l er2 /* +16:er2 */
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| 280 | pop.l er1 /* +20:er1 */
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| 281 | pop.l er0 /* +24:er0 */
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| 282 | /* +28:EXR -> EXR_offset = 28 */
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| 283 | rte /* å²è¾¼ã¿çºçå ´æã«æ»ã */
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| 284 | /* EXR ã®å¾©å
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| 285 | (unlock_cpu ç¸å½)ã¯ãã¼ãã¦ã§ã¢ãè¡ãã */
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| 286 |
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| 287 | /*
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| 288 | * å²è¾¼ã¿åºå
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| 289 | ¥å£å¦çã«ãããé
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| 290 | 延ãã£ã¹ããã/ã¿ã¹ã¯ä¾å¤ã«é¢ããå¦ç
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| 291 | */
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| 292 | occur_dispatch_or_tsk_exception:
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| 293 |
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| 294 | /* å²è¾¼ã¿çºçåæã®å¤å® */
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| 295 | mov.b @(EXR_offset, sp), r0l /* r01 = ã¹ã¿ãã¯ä¸ã®EXR */
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| 296 | and.b #EXR_I_MASK, r0l /* r01 = ã¹ã¿ãã¯ä¸ã®å²ãè¾¼ã¿ãã¹ã¯ */
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| 297 |
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| 298 | #ifdef SUPPORT_CHG_IPM /* r1l = ã¿ã¹ã¯ã³ã³ããã¹ãã®
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| 299 | å²è¾¼ã¿ãã¹ã¯ */
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| 300 | mov.b @_task_intmask, r1l
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| 301 | #else /* SUPPORT_CHG_IPM */
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| 302 | mov.b #0, r1l
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| 303 | #endif /* SUPPORT_CHG_IPM */
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| 304 |
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| 305 | cmp.b r0l, r1l /* å¤å®é¨å (å²è¾¼ã¿çºçåæ) */
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| 306 |
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| 307 | bne ret_to_task_int /* å²è¾¼ã¿çºçå ´æããã¿ã¹ã¯ã³ã³ããã¹ã
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| 308 | ã§ãªãæãã¸ã£ã³ã */
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| 309 | /* è«ççãªåå²å
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| 310 | ã¯ãto_int_routine ã«ããã SUPPORT_CHG_IPM
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| 311 | ãã¯ãã§å²ã¾ããåæã®ç´å¾ã§ãããã³ã¹ãã®åé¡ãããæ¬è³ªç
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| 312 | ã«åããªã®ã§ãret_to_task_int ã¨è¨è¿°ããã */
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| 313 |
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| 314 | sub.l er0, er0 /* er0 = NULL (= 0) */
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| 315 | mov.l er0, @_reqflg /* reqflg = NULL (reqflgãã¯ãªã¢) */
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| 316 |
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| 317 | /* é
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| 318 | 延ãã£ã¹ãããã«é¢ããå¤å® */
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| 319 | /* ãã£ã¹ãããç¦æ¢/許å¯ã®å¤å® */
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| 320 | mov.l @_enadsp, er0 /* er0 = enadsp */
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| 321 | or.l er0, er0 /* å¤å®é¨å */
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| 322 | beq to_tsk_exc /* ãã£ã¹ãããç¦æ¢ãªãã¸ã£ã³ã */
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| 323 |
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| 324 | /* ã¹ã±ã¸ã¥ã¼ãªã³ã°çµæã®å¤å® */
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| 325 | mov.l @_runtsk, er0 /* er0 = runtsk */
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| 326 | mov.l @_schedtsk, er1 /* er1 = schedtsk */
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| 327 | cmp.l er0, er1 /* å¤å®é¨å */
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| 328 | beq to_tsk_exc /* runtsk == schedtsk ãªãã¸ã£ã³ã */
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| 329 |
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| 330 | /* é
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| 331 | 延ãã£ã¹ããããçºçããå ´å */
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| 332 | occur_dispatch:
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| 333 | #ifdef H8S_2600 /* H8S_2600ã¯ã³ã³ãã¤ã«ãªãã·ã§ã³å®ç¾© */
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| 334 | /* ç©åã¬ã¸ã¹ã¿ã®éé¿ */
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| 335 | /* er0 ã¯ä¸è¨ã«ã¦å©ç¨ããã®ã§ç ´å£ã§ããªã */
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| 336 | stmac mach, er1
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| 337 | push.l er1
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| 338 | stmac macl, er1
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| 339 | push.l er1
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| 340 | #endif /* H8S_2600 */
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| 341 |
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| 342 | mov.l sp, @(TCB_sp, er0) /* runtsk->sp = sp
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| 343 | (ã¿ã¹ã¯ã¹ã¿ãã¯ãã¤ã³ã¿ãä¿å) */
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| 344 |
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| 345 | mov.l #ret_int_r, er1
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| 346 | mov.l er1, @(TCB_pc, er0) /* runtsk->pc = ret_int_r
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| 347 | (ã¿ã¹ã¯ã®å®è¡åéçªå°ãä¿å) */
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| 348 |
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| 349 | jmp dispatcher_1 /* ãã£ã¹ãããã£å¼åº */
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| 350 |
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| 351 | /* é
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| 352 | 延ãã£ã¹ãããã«ãã£ã¦ãã£ã¹ãããããã¿ã¹ã¯ã³ã³ããã¹ãã®éå§å°ç¹ */
|
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| 353 | _ret_int_r: /* monitor åã */
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| 354 | ret_int_r:
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| 355 |
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| 356 | #ifdef H8S_2600 /* H8S_2600ã¯ã³ã³ãã¤ã«ãªãã·ã§ã³å®ç¾© */
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| 357 | /* ç©åã¬ã¸ã¹ã¿ã®å¾©å
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| 358 | */
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| 359 | pop.l er0
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| 360 | ldmac er0, macl
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| 361 | pop.l er0
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| 362 | ldmac er0, mach
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| 363 | #endif /* H8S_2600 */
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| 364 |
|
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| 365 | /* é
|
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| 366 | 延ãã£ã¹ããããçºçããªãã£ãå ´åã®éå§å°ç¹ */
|
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| 367 |
|
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| 368 | /* ã¿ã¹ã¯ä¾å¤å¦çã«é¢ããå¤å® */
|
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| 369 | to_tsk_exc:
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| 370 | mov.l @_runtsk, er0 /* er0 = runtsk */
|
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| 371 |
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| 372 | /* ã¿ã¹ã¯ä¾å¤å¦çç¦æ¢/許å¯ã®å¤å® */
|
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| 373 | mov.b @(TCB_enatex, er0), r1l /* r1l = runtsk->enatex */
|
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| 374 | btst #TCB_enatex_bit, r1l /* TCB_enatex == 1 ãï¼ */
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| 375 | beq to_int_routine /* ã¿ã¹ã¯ä¾å¤å¦çç¦æ¢ã®æãã¸ã£ã³ã */
|
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| 376 |
|
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| 377 | /* ã¿ã¹ã¯ä¾å¤è¦æ±ã®æç¡ã®å¤å® */
|
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| 378 | mov.l @(TCB_texptn, er0), er1 /* er1 = runtsk->texptn */
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| 379 | beq to_int_routine /* ã¿ã¹ã¯ä¾å¤è¦æ±ãç¡ãæãã¸ã£ã³ã */
|
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| 380 |
|
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| 381 | jsr @_call_texrtn /* ã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³ã®å¼åº */
|
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| 382 |
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| 383 | to_int_routine:
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| 384 |
|
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| 385 | /* chg_ipm ã®è©±ã¯ãé
|
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| 386 | 延ãã£ã¹ãããå
|
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| 387 | ã®ã¿ã¹ã¯ã®åé¡ãªã®ã§ãããã«è¨è¿°ããã */
|
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| 388 | #ifdef SUPPORT_CHG_IPM
|
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| 389 | /* å²ãè¾¼ã¿ãã³ãã©çµäºæã«å¥ã®ã¿ã¹ã¯ã¸ã¹ã¤ããããã¨ãã«ã
|
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| 390 | å²ãè¾¼ã¿ãã¹ã¯ãæ´åãããå¦ç */
|
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| 391 | /* ä¾ï¼ãã£ã¹ãããé åºï¼
|
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| 392 | ã¿ã¹ã¯ï¼¡->å²ãè¾¼ã¿ãã³ãã©->ã¿ã¹ã¯ï¼¢->ã¿ã¹ã¯ï¼¡
|
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| 393 | åä½ï¼
|
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| 394 | ãã®æã«ã¿ã¹ã¯ï¼¢å
|
---|
| 395 | ã§ãå²è¾¼ã¿ãã¹ã¯ã®å¤æ´ãè¡ãããå ´åã«ã
|
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| 396 | ãã®å²è¾¼ã¿ãã¹ã¯ã«é¢ããæ
|
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| 397 | å ±ããã¿ã¹ã¯ï¼¢ããã¿ã¹ã¯ï¼¡ã¸ã¨
|
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| 398 | å¼ãç¶ãããã«å¿
|
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| 399 | è¦ã*/
|
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| 400 | mov.b @_task_intmask, r1l /* r1l = task_intmask */
|
---|
| 401 | /* task_intmaskï¼CHG_IPM ã«ããå¤æ´ãããå¯è½æ§ã®ãã
|
---|
| 402 | å²è¾¼ã¿ãã¹ã¯ */
|
---|
| 403 | mov.b r1l, @(EXR_offset, sp)
|
---|
| 404 | /* ã¹ã¿ãã¯ä¸ã® EXR ã«ä¸æ¸ããããã */
|
---|
| 405 | /* å¶éäºé
|
---|
| 406 | ï¼EXR ã®ãã¬ã¼ã¹ããã T ã¯ä¿åãããªãã */
|
---|
| 407 | #endif /* SUPPORT_CHG_IPM */
|
---|
| 408 |
|
---|
| 409 | jmp ret_to_task_int /* ã¿ã¹ã¯ã³ã³ããã¹ãã¸ã®å¾©å¸° */
|
---|
| 410 |
|
---|
| 411 | /*============================================================================*/
|
---|
| 412 |
|
---|
| 413 | /*
|
---|
| 414 | * ã¿ã¹ã¯èµ·åå¦ç
|
---|
| 415 | */
|
---|
| 416 |
|
---|
| 417 | .global _activate_r
|
---|
| 418 |
|
---|
| 419 | _activate_r:
|
---|
| 420 | /* ããã«æ¥ãã¨ãã¯ãCPUããã¯ã«ãªã£ã¦ããã */
|
---|
| 421 |
|
---|
| 422 | mov.l #_ext_tsk, er0
|
---|
| 423 | push.l er0 /* ã¿ã¹ã¯ããã®æ»ãçªå°ãè¨å® */
|
---|
| 424 |
|
---|
| 425 | /* ã¿ã¹ã¯é¢ä¿ã®è¨å®æºå */
|
---|
| 426 | mov.l @_runtsk, er2 /* er2 = runtsk */
|
---|
| 427 | mov.l @(TCB_tinib, er2), er2 /* er2 = runtsk->tinib */
|
---|
| 428 |
|
---|
| 429 | /* ã¿ã¹ã¯èµ·åçªå°ã®è¨å® */
|
---|
| 430 | mov.l @(TINIB_task, er2), er1 /* er1 = runtsk->tinib->task */
|
---|
| 431 |
|
---|
| 432 | /* ã¿ã¹ã¯ã¸ã®å¼æ°ï¼æ¡å¼µæ
|
---|
| 433 | å ±ï¼è¨å® */
|
---|
| 434 | mov.l @(TINIB_exinf, er2), er0 /* er0 = runtsk->tinib->exinf */
|
---|
| 435 |
|
---|
| 436 | #ifdef SUPPORT_CHG_IPM
|
---|
| 437 | ldc.b @_task_intmask, exr /* unlock_cpuç¸å½(å²è¾¼ã¿è¨±å¯) */
|
---|
| 438 | #else /* SUPPORT_CHG_IPM */
|
---|
| 439 | ldc.b #0, exr /* unlock_cpuç¸å½(å²è¾¼ã¿è¨±å¯) */
|
---|
| 440 | #endif /* SUPPORT_CHG_IPM */
|
---|
| 441 |
|
---|
| 442 | jmp @er1 /* ã¿ã¹ã¯èµ·å */
|
---|
| 443 |
|
---|
| 444 | /*============================================================================*/
|
---|
| 445 | /* å
|
---|
| 446 | ±éããã¥ã¡ã³ãã«ã¯ãªããç¬èªã®é¨å */
|
---|
| 447 |
|
---|
| 448 | /*
|
---|
| 449 | * no_reg_exception()
|
---|
| 450 | * CPUä¾å¤ã¨ãã¦ç»é²ããã¦ããªãä¾å¤ãçºçããã¨å¼ã³åºãããã
|
---|
| 451 | * ä¾å¤ãçºçããæç¹ã® PCãer0ã7 ãåºåãã¦ã«ã¼ãã«ãåæ¢ããã
|
---|
| 452 | */
|
---|
| 453 | .global no_reg_exception
|
---|
| 454 |
|
---|
| 455 | no_reg_exception:
|
---|
| 456 |
|
---|
| 457 | push.l er0 /* er0ã6ãä¿å */
|
---|
| 458 | push.l er1
|
---|
| 459 | push.l er2
|
---|
| 460 | push.l er3
|
---|
| 461 | push.l er4
|
---|
| 462 | push.l er5
|
---|
| 463 | push.l er6
|
---|
| 464 |
|
---|
| 465 | mov.l sp, er0 /* å¼æ°ã«ã¹ã¿ãã¯ãã¤ã³ã¿ãè¨å® */
|
---|
| 466 | /* CPUä¾å¤çºçæç¹ã® SP ã¯ã
|
---|
| 467 | 34(= 4*7(er) + 1(exr) + 1(äºç´) + 1(ccr) + 3(pc) ) ãå¼ã */
|
---|
| 468 |
|
---|
| 469 | jsr @_cpu_experr /* cpu_experr()ã®å¼ã³åºã */
|
---|
| 470 |
|
---|