[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) 2007 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 |
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| 53 | * @(#) $Id: start.S,v 1.10 2007/05/30 03:56:47 honda Exp $
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| 54 | */
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| 55 |
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| 56 | #define _MACRO_ONLY
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| 57 |
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| 58 | #include <m32rasm.inc>
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| 59 | #include <s_services.h>
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| 60 |
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| 61 | /*
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| 62 | * ã¹ã¿ã¼ãã¢ããã«ã¼ãã³
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| 63 | */
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| 64 | .text
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| 65 | .align 4
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| 66 | .globl start
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| 67 |
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| 68 | start:
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| 69 | .extern kernel_start
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| 70 | .extern hardware_init_hook
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| 71 | .extern software_init_hook
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| 72 | .extern reset
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| 73 |
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| 74 | /* pswã®åæå */
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| 75 | ldi r0, 0
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| 76 | mvtc r0, psw
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| 77 |
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| 78 | /* å²è¾¼ã¿ã¹ã¿ãã¯ãã¤ã³ã¿ã®åæå */
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| 79 | lea r15, __stack
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| 80 |
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| 81 | /* EITãã¼ã¹ã¬ã¸ã¹ã¿ã®è¨å® */
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| 82 | lea r0, reset
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| 83 | mvtc r0, cr5
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| 84 |
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| 85 | /* ãã¼ãã¦ã§ã¢åæåã«ã¼ãã³ã®èµ·å */
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| 86 | lea r0, hardware_init_hook
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| 87 | beqz r0, L1
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| 88 | jl r0
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| 89 |
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| 90 | L1:
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| 91 | /* .bssã»ã¯ã·ã§ã³ã®ã¯ãªã¢ */
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| 92 | xor r0, r0
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| 93 | lea r1, __sbss
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| 94 | lea r2, __ebss
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| 95 | beq r1, r2, L3
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| 96 | L2:
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| 97 | st r0, @-r2
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| 98 | bne r1, r2, L2
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| 99 |
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| 100 | L3:
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| 101 | /* .dataã»ã¯ã·ã§ã³ã®åæå */
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| 102 | lea r1, __sidata
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| 103 | lea r2, __eidata
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| 104 | lea r3, __sdata
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| 105 |
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| 106 | addi r3, -4
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| 107 | beq r1, r2, L5
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| 108 | L4: ld r0, @r1+
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| 109 | st r0, @+r3
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| 110 | bne r1, r2, L4
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| 111 |
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| 112 | L5:
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| 113 | /* ã½ããã¦ã§ã¢åæåã«ã¼ãã³ã®èµ·å */
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| 114 | lea r0, software_init_hook
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| 115 | beqz r0, L6
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| 116 | jl r0
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| 117 |
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| 118 | L6:
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| 119 | /* å²è¾¼ã¿ãã¹ã¯ã®è¨å® */
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| 120 | ld24 r0, ICUIMASK + 1
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| 121 | ldi r1, 7 /* ãã¹ã¦ã®å²è¾¼ã¿è¦æ±ãåä»ã */
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| 122 | stb r1, @r0
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| 123 |
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| 124 | /* ã«ã¼ãã«èµ·å */
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| 125 | bl kernel_start
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| 126 |
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| 127 | L7: bra L7
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