[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 | * 2003 by Advanced Data Controls, Corp
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| 9 | *
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| 10 | * ä¸è¨èä½æ¨©è
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| 11 | ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 12 | * ã«ãã£ã¦å
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| 13 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 14 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 15 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 16 | å¸ï¼ä»¥ä¸ï¼
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| 17 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 18 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 19 | * 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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| 20 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 21 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 22 | * ç¨ã§ããå½¢ã§åé
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| 23 | å¸ããå ´åã«ã¯ï¼åé
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| 24 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 25 | * è
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| 26 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 27 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 28 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 29 | * ç¨ã§ããªãå½¢ã§åé
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| 30 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 31 | * ã¨ï¼
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| 32 | * (a) åé
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| 33 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 34 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 35 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 36 | * (b) åé
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| 37 | å¸ã®å½¢æ
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| 38 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 39 | * å ±åãããã¨ï¼
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| 40 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 41 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 42 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 43 | 責ãããã¨ï¼
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| 44 | *
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| 45 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 46 | ã
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| 47 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 48 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 49 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 50 | *
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| 51 | * @(#) $Id: start.arm,v 1.3 2003/12/19 11:24:37 honda Exp $
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| 52 | */
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| 53 |
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| 54 | /*
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| 55 | * ã«ã¼ãã«ç¨ã®ã¹ã¿ã¼ãã¢ããã¢ã¸ã¥ã¼ã«(ARMv4ç¨)
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| 56 | */
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| 57 | #define _MACRO_ONLY
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| 58 | #include <armv4.h>
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| 59 | #include <sys_defs.h>
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| 60 |
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| 61 | #include <t_config.h>
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| 62 |
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| 63 |
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| 64 | /*
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| 65 | * Vectorãã¼ãã«ã¨ã¸ã£ã³ããã¼ãã«
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| 66 | * ãµã¤ãºã¯åè¨0x3c
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| 67 | */
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| 68 | .section .vector,"a"
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| 69 | .align 0
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| 70 | .global vector_table
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| 71 | vector_table:
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| 72 | ldr pc, reset_vector /* ãªã»ãã */
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| 73 | ldr pc, undef_vector /* æªå®ç¾©å½ä»¤ */
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| 74 | ldr pc, swi_vector /* ã½ããã¦ã§ã¢å²è¾¼ã¿ */
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| 75 | ldr pc, prefech_vector /* ããªãã§ããã¢ãã¼ã */
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| 76 | ldr pc, data_abort_vector /* ãã¼ã¿ã¢ãã¼ã */
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| 77 | ldr pc, reset_vector
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| 78 | ldr pc, irq_vector /* IRQ */
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| 79 | ldr pc, fiq_vector /* IRQ */
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| 80 |
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| 81 | /*
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| 82 | * ãã¯ã¿ã¼ãã¼ãã«
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| 83 | */
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| 84 | reset_vector:
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| 85 | .word start
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| 86 | undef_vector:
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| 87 | .word undef_exception
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| 88 | swi_vector:
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| 89 | .word swi_exception
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| 90 | prefech_vector:
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| 91 | .word prefetch_exception
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| 92 | data_abort_vector:
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| 93 | .word data_abort_exception
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| 94 | irq_vector:
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| 95 | .word IRQ_Handler
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| 96 | fiq_vector:
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| 97 | .word fiq_exception
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| 98 |
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| 99 | .text
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| 100 | .align 0
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| 101 | .global main
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| 102 | main:
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| 103 | bl start
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| 104 | .global start
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| 105 | start:
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| 106 | mov r1, #(CPSR_SVC|CPSR_FIQ_BIT|CPSR_IRQ_BIT) /* To System mode */
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| 107 | msr cpsr_all, r1
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| 108 |
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| 109 | /*
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| 110 | * ã¹ã¿ãã¯ãã¤ã³ã¿ã¨ï¼ãã¬ã¼ã ãã¤ã³ã¿ã®åæå
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| 111 | * SL(ã¹ã¿ãã¯ä¸éã¬ã¸ã¹ã¿r10)ã¯è¨å®ããå¿
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| 112 | è¦ãããã?
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| 113 | * gccã¯ãã£ãã©ã«ãã§ã¯-mapcsãªã®ã§å¿
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| 114 | è¦ãªã
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| 115 | */
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| 116 | ldr r3, =STACKTOP
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| 117 | mov sp, r3
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| 118 | mov r11, #0 /* Armã¢ã¼ãç¨ãã¬ã¼ã ãã¤ã³ã¿ */
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| 119 | mov r7, #0 /* Thubmã¢ã¼ãç¨ãã¬ã¼ã ãã¤ã³ã¿ */
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| 120 |
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| 121 | /*
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| 122 | * hardware_init_hookã®å¼ã³åºã ï¼0ã§ãªãå ´åï¼
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| 123 | *
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| 124 | * ã¿ã¼ã²ãããã¼ãã¦ã§ã¢ã«ä¾åãã¦å¿
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| 125 | è¦ãªåæåå¦çãããå ´å
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| 126 | * ã¯ï¼hardware_init_hook ã¨ããé¢æ°ãç¨æãã
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| 127 | */
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| 128 | ldr r0, =hardware_init_hook
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| 129 | cmp r0, #0x00
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| 130 | blne hardware_init_hook
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| 131 |
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| 132 | /*
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| 133 | * software_init_hook ãå¼åºãï¼0 ã§ãªãå ´åï¼
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| 134 | *
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| 135 | * ã½ããã¦ã§ã¢ç°å¢ï¼ç¹ã«ã©ã¤ãã©ãªï¼ã«ä¾åãã¦å¿
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| 136 | è¦ãªåæåå¦
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| 137 | * çãããå ´åã¯ï¼software_init_hook ã¨ããé¢æ°ãç¨æããã°
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| 138 | * ããï¼
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| 139 | */
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| 140 | start_5:
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| 141 | ldr r0, =software_init_hook
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| 142 | cmp r0, #0x00
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| 143 | blne software_init_hook
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| 144 |
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| 145 | start_6:
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| 146 | bl kernel_start
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| 147 | .align 4
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| 148 | .weak hardware_init_hook
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| 149 | .weak software_init_hook
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| 150 | .weak software_term_hook
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