[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) 2001-2010 by Industrial Technology Institute,
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| 9 | * Miyagi Prefectural Government, JAPAN
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| 10 | * Copyright (C) 2001-2004 by Dep. of Computer Science and Engineering
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| 11 | * Tomakomai National College of Technology, 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 | * @(#) $Id: start.S,v 1.17 2007/03/23 07:22:15 honda Exp $
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| 55 | */
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| 56 | #define _MACRO_ONLY
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| 57 | #include <t_config.h>
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| 58 |
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| 59 | /*
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| 60 | * H8ç¨ã¹ã¿ã¼ãã¢ããã¢ã¸ã¥ã¼ã«
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| 61 | * ãã«ã¼ãã«ã¯ã¢ããªã±ã¼ã·ã§ã³ã¨ãªã³ã¯ãã¦ä½¿ç¨ããã®ã§
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| 62 | * ããã®ã¹ã¿ã¼ãã¢ããã¢ã¸ã¥ã¼ã«ã¯JSPã«ã¼ãã«ã§ã®ã¿ä½¿ç¨ããã
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| 63 | */
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| 64 | .h8300h
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| 65 |
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| 66 | .text
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| 67 | .align 2
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| 68 |
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| 69 | .global _start
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| 70 | _start:
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| 71 |
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| 72 | /*
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| 73 | * éã¿ã¹ã¯ã³ã³ããã¹ãç¨ã¹ã¿ãã¯ãSTACKTOPã«åæåãã
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| 74 | * ãï¼STACKTOPã¯ãsys_config.hã§å®ç¾©ï¼
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| 75 | * _hardware_init_hookãå¼ã³åºãã«ã¯STACKTOPãæãRAM
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| 76 | * é åãã¢ã¯ã»ã¹å¯è½ã«ãªã£ã¦ããå¿
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| 77 | è¦ããããï¼ä¸è¨åç
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| 78 | §ï¼
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| 79 | */
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| 80 | mov.l #STACKTOP, sp
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| 81 |
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| 82 | /* å²è¾¼ã¿å
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| 83 | ¨ç¦æ¢ */
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| 84 | orc.b #H8INT_DIS_ALL, ccr
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| 85 |
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| 86 | /*
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| 87 | * _hardware_init_hook ãå¼ã³åºãã(0ã§ãªãå ´å)
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| 88 | *
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| 89 | * ãã¼ãã¦ã§ã¢ä¾åã«å¿
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| 90 | è¦ãªåæåå¦çãããå ´åã¯ï¼
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| 91 | * hardware_init_hook ã¨ããé¢æ°ãç¨æããã°ããï¼
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| 92 | * å
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| 93 | ·ä½çã«ã¯ROMåã®éãRAMã使ç¨å¯è½ã«ããããã®
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| 94 | * ãã¹ã³ã³ããã¼ã©ã®åæåçãè¡ãã
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| 95 | * sys_support.S å
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| 96 | 㧠hardware_init_hook ãå®ç¾©ãã¦ã
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| 97 | * ãï¼
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| 98 | *
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| 99 | * hardware_init_hookã§ã¯ãã¹ã»ã¹ãã¼ãã³ã³ããã¼ã©ã®
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| 100 | * åæåãè¡ãã®ã§ããã®ã«ã¼ãã³ãå¼ã³åºãã®ã«RAMã
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| 101 | * ã¹ã¿ãã¯é åã«ä½¿ç¨ããã®ã¯ãããããã
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| 102 | *ãããã®ãµãã«ã¼ãã³å¼ã³åºãã§ã¯ã
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| 103 | *ããã»åæç¶æ
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| 104 | ã®ã¾ã¾ã¢ã¯ã»ã¹ã§ããå
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| 105 | èµRAMãã¾ãã¯
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| 106 | *ããã»ã¢ãã¿ã«ããã¢ã¯ã»ã¹ã§ããç¶æ
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| 107 | ã«ããå¤é¨RAM
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| 108 | *ããã¹ã¿ãã¯é åã«ä½¿ç¨ãã¦ããã
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| 109 | */
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| 110 | start_0:
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| 111 | mov.l #_hardware_init_hook, er0
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| 112 | beq start_1
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| 113 | jsr @er0
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| 114 |
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| 115 | /*
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| 116 | * bssã»ã¯ã·ã§ã³ãã¯ãªã¢
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| 117 | */
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| 118 | start_1:
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| 119 | mov.l #__bss_start, er0
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| 120 | mov.l #_end, er1
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| 121 | sub.l er2, er2
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| 122 | start_2:
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| 123 | mov.l er2, @er0
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| 124 | add.l #4, er0
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| 125 | cmp.l er1, er0
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| 126 | blo start_2 /* er1 > er0 */
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| 127 |
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| 128 | /*
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| 129 | * dataã»ã¯ã·ã§ã³ãåæåããï¼ROMå対å¿ï¼ï¼
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| 130 | *
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| 131 | * __idata_start ãã __idata_end ã¾ã§ãï¼__data_start 以éã«
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| 132 | * ã³ãã¼ããï¼
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| 133 | *
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| 134 | * eepmov.wå½ä»¤ã使ãæ¹ãå¹ççã ããæ大転éãã¤ãæ°ã
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| 135 | * 65,535ãã¤ãã«å¶éãããããã使ç¨ãã¦ããªãã
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| 136 | */
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| 137 | mov.l #__idata_start, er0
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| 138 | mov.l #__idata_end, er1
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| 139 | mov.l #__data_start, er2
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| 140 | start_4:
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| 141 | mov.l @er0+, er4 /* *er2++ = *er0 ++; */
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| 142 | mov.l er4, @er2
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| 143 | add.l #4, er2
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| 144 | cmp.l er1, er0
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| 145 | blo start_4 /* er1 > er0 */
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| 146 |
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| 147 | /*
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| 148 | * software_init_hook ãå¼ã³åºãï¼0 ã§ãªãå ´åï¼ï¼
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| 149 | *
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| 150 | * ã½ããã¦ã§ã¢ç°å¢ï¼ç¹ã«ã©ã¤ãã©ãªï¼ã«ä¾åãã¦å¿
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| 151 | è¦ãªåæåå¦
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| 152 | * çãããå ´åã¯ï¼software_init_hook ã¨ããé¢æ°ãç¨æããã°
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| 153 | * ããï¼
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| 154 | */
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| 155 | mov.l #_software_init_hook, er0
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| 156 | beq start_6
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| 157 | jsr @er0
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| 158 |
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| 159 | /*
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| 160 | * ã«ã¼ãã«ãèµ·åãã
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| 161 | */
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| 162 | start_6:
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| 163 | jmp @_kernel_start
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| 164 |
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| 165 |
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| 166 | /*
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| 167 | * HEWã®I/Oã·ãã¥ã¬ã¼ã·ã§ã³æ©è½ã®å¼ã³åºã
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| 168 | *
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| 169 | * æ¬æ¥ã¯ãsys_support.Sã«è¨è¿°ãã¹ãã ãã
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| 170 | * ãªã³ã¯å¾ã®_hew_io_sim_bodyã®ã¢ãã¬ã¹ã
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| 171 | * ã¢ããªã±ã¼ã·ã§ã³ã«ããããä¸å®ã«ããããã
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| 172 | * ã¹ã¿ã¼ãã¢ããã«ã¼ãã³ã®ç´å¾ã«é
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| 173 | ç½®ãã¦ããã
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| 174 | *
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| 175 | * ãã®ã¢ãã¬ã¹ã«åå²ãããã¨ã§ãHEWã®I/Oã·ãã¥ã¬ã¼ã·ã§ã³æ©è½ã
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| 176 | * ä½åããããªã¬ã¨ãªãã
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| 177 | *
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| 178 | * ã以ä¸ã®ç¶æ
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| 179 | ã§å¼ã°ããã
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| 180 | * ããr0ï¼æ©è½ã³ã¼ã(2ãã¤ã)
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| 181 | * ããer1ï¼ãã©ã¡ã¼ã¿ãããã¯ã¸ã®ãã¤ã³ã¿ï¼4ãã¤ãï¼
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| 182 | */
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| 183 | #ifdef HEW_SIMULATOR
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| 184 |
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| 185 | .section .text
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| 186 | .align 2
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| 187 | .global _hew_io_sim
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| 188 | _hew_io_sim:
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| 189 | rts
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| 190 |
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| 191 | #endif /* HEW_SIMULATOR */
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| 192 |
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