[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) 2006 by Monami Software Limited Partnership, JAPAN
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| 9 | * Copyright (C) 2007 by Embedded and Real-Time Systems Laboratory
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| 10 | * Graduate School of Information Science, Nagoya Univ., JAPAN
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| 11 | *
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| 12 | * ä¸è¨èä½æ¨©è
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| 13 | ã¯ï¼ä»¥ä¸ã® (1)ã(4) ã®æ¡ä»¶ãï¼Free Software Foundation
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| 14 | * ã«ãã£ã¦å
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| 15 | ¬è¡¨ããã¦ãã GNU General Public License ã® Version 2 ã«è¨
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| 16 | * è¿°ããã¦ããæ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§ã¢
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| 17 | * ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹å¤ã»åé
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| 18 | å¸ï¼ä»¥ä¸ï¼
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| 19 | * å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 20 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 21 | * 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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| 22 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 23 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 24 | * ç¨ã§ããå½¢ã§åé
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| 25 | å¸ããå ´åã«ã¯ï¼åé
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| 26 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 27 | * è
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| 28 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 29 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 30 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 31 | * ç¨ã§ããªãå½¢ã§åé
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| 32 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 33 | * ã¨ï¼
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| 34 | * (a) åé
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| 35 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 36 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 37 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 38 | * (b) åé
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| 39 | å¸ã®å½¢æ
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| 40 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 41 | * å ±åãããã¨ï¼
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| 42 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 43 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 44 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 45 | 責ãããã¨ï¼
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| 46 | *
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| 47 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 48 | ã
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| 49 | * ãã³TOPPERSããã¸ã§ã¯ãã¯ï¼æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ã
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| 50 | * å«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´
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| 51 | * æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 52 | *
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| 53 | * @(#) $Id: cpu_support.S,v 1.12 2007/05/30 03:56:47 honda Exp $
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| 54 | */
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| 55 |
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| 56 | /*
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| 57 | * ããã»ããµä¾åã¢ã¸ã¥ã¼ã« ã¢ã»ã³ããªè¨èªé¨ï¼M32Rç¨ï¼
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| 58 | */
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| 59 |
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| 60 | #define _MACRO_ONLY
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| 61 |
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| 62 | #include <cpu_rename.h>
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| 63 |
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| 64 | #include <m32rasm.inc>
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| 65 | #include <s_services.h>
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| 66 |
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| 67 | #include "offset.h"
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| 68 |
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| 69 | #define _trap_handler_0 _kernel__trap_handler_0
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| 70 | #define _trap_handler_1 _kernel__trap_handler_1
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| 71 | #define _trap_handler_2 _kernel__trap_handler_2
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| 72 | #define _trap_handler_3 _kernel__trap_handler_3
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| 73 | #define _trap_handler_4 _kernel__trap_handler_4
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| 74 | #define _trap_handler_5 _kernel__trap_handler_5
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| 75 | #define _trap_handler_6 _kernel__trap_handler_6
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| 76 | #define _trap_handler_7 _kernel__trap_handler_7
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| 77 | #define _trap_handler_8 _kernel__trap_handler_8
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| 78 | #define _trap_handler_9 _kernel__trap_handler_9
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| 79 | #define _trap_handler_10 _kernel__trap_handler_10
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| 80 | #define _trap_handler_11 _kernel__trap_handler_11
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| 81 | #define _trap_handler_12 _kernel__trap_handler_12
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| 82 | #define _trap_handler_13 _kernel__trap_handler_13
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| 83 | #define _trap_handler_14 _kernel__trap_handler_14
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| 84 | #define _trap_handler_15 _kernel__trap_handler_15
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| 85 |
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| 86 | .extern _kernel_runtsk
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| 87 | .extern _kernel_schedtsk
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| 88 | .extern _kernel_reqflg
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| 89 | .extern _kernel_enaflg
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| 90 | .extern InterruptHandlerEntry
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| 91 | .extern ExceptionHandlerEntry
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| 92 | .extern ext_tsk
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| 93 |
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| 94 | /*
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| 95 | * EITãã¯ã¿ã¨ã³ããªã®å®ç¾©
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| 96 | */
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| 97 | .section ".vector","ax"
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| 98 | .global reset
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| 99 | .extern start
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| 100 |
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| 101 | .balign 0x10
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| 102 | reset:
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| 103 | bra start
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| 104 |
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| 105 | .balign 0x10
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| 106 | vector_entry_SBI:
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| 107 | /*
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| 108 | * ã·ã¹ãã ãã¬ã¼ã¯å²è¾¼ã¿
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| 109 | */
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| 110 | bra vector_entry_SBI
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| 111 |
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| 112 | .balign 0x10
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| 113 | vector_entry_RIE:
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| 114 | /*
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| 115 | * äºç´å½ä»¤ä¾å¤ï¼Reserved Instruction Exceptionï¼
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| 116 | */
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| 117 | stmdb "r0,r1"
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| 118 | ldi r1, #(EXC_RIE*4-4)
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| 119 | bra _exception_handler
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| 120 |
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| 121 | .balign 0x10
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| 122 | vector_entry_AE:
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| 123 | /*
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| 124 | * ã¢ãã¬ã¹ä¾å¤ï¼Address Exceptionï¼
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| 125 | */
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| 126 | stmdb "r0,r1"
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| 127 | ldi r1, #(EXC_AE*4-4)
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| 128 | bra _exception_handler
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| 129 |
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| 130 | .balign 0x10
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| 131 | vector_entry_trap:
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| 132 | /*
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| 133 | * ãã©ãããã¯ã¿ã¨ã³ããª
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| 134 | */
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| 135 | bra _trap_handler_0
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| 136 | bra _trap_handler_1
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| 137 | bra _trap_handler_2
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| 138 | bra _trap_handler_3
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| 139 | bra _trap_handler_4
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| 140 | bra _trap_handler_5
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| 141 | bra _trap_handler_6
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| 142 | bra _trap_handler_7
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| 143 | bra _trap_handler_8
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| 144 | bra _trap_handler_9
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| 145 | bra _trap_handler_10
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| 146 | bra _trap_handler_11
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| 147 | bra _trap_handler_12
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| 148 | bra _trap_handler_13
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| 149 | bra _trap_handler_14
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| 150 | bra _trap_handler_15
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| 151 |
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| 152 | /*
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| 153 | * å²è¾¼ã¿ãã¯ã¿ã¨ã³ããªã¨å²è¾¼ã¿ãã³ãã©èµ·åï¼å¾©å¸°å¦çé¨
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| 154 | *
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| 155 | * å²è¾¼ã¿çºçæã®ãã¼ãã¦ã¨ã¢ã®åä½
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| 156 | *
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| 157 | * pswã¬ã¸ã¹ã¿ä¸ã®smï¼ieï¼pmï¼cããããbsmï¼bieï¼bpmï¼bcãããã«éé¿
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| 158 | * ããï¼bpcã«ã¯å²è¾¼ã¿çºçæã®pcå¤ãå
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| 159 | ¥ãï¼
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| 160 | *
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| 161 | * bsm <- sm
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| 162 | * bie <- ie
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| 163 | * bpm <- pm
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| 164 | * bc <- c
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| 165 | * bpc <- å²è¾¼ã¿çºçæã®pcå¤
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| 166 | *
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| 167 | * pswã¬ã¸ã¹ã¿ä¸ã®smï¼ieï¼pmï¼cãããã以ä¸ã®ããã«æ´æ°ããï¼
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| 168 | *
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| 169 | * sm <- 0
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| 170 | * ie <- 0
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| 171 | * pm <- 0
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| 172 | * c <- 0
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| 173 | *
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| 174 | *ãã¬ã¸ã¹ã¿ã®ç©ã¿æ¹
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| 175 | * r0-r1ï¼ä½æ¥é åï¼
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| 176 | * r0-r7ï¼r14ï¼acc(hi/lo)ï¼bpcï¼pswï¼ICUISTSï¼pswï¼å²è¾¼ã¿ãã³ãã©å¼åºåï¼
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| 177 | *
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| 178 | * äºã¤ç®ã®psw以å¤ã¯ï¼å²è¾¼ã¿çºçæã®ã³ã³ããã¹ãã«å¯¾å¿ããã¹ã¿ãã¯ã«
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| 179 | * éé¿ããï¼2ã¤ç®ã®pswã¯ï¼å²è¾¼ã¿ãã³ãã©ã®å®è¡ç´å¾ã«å¾©å¸°ããããã«ï¼
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| 180 | * å¿
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| 181 | ãå²è¾¼ã¿ã¹ã¿ãã¯ã«éé¿ããï¼é
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| 182 | 延ãã£ã¹ãããããå ´åã«ã¯ï¼ä¸è¨ã®
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| 183 | * ã¬ã¸ã¹ã¿ä»¥å¤ã«ãï¼r8-r13ãéé¿ãã¦ãã£ã¹ãããã£ãå¼ã³åºãï¼
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| 184 | */
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| 185 | .balign 0x10
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| 186 | interrupt_handler:
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| 187 |
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| 188 | /*
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| 189 | * ä½æ¥ç¨ã¬ã¸ã¹ã¿ã®éé¿
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| 190 | *
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| 191 | * æåã«ä½æ¥ç¨ã¬ã¸ã¹ã¿ãã¹ã¿ãã¯ã«éé¿ããï¼å²è¾¼ã¿çºçç´å¾ã¯ï¼å¿
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| 192 |
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| 193 | * ãå²è¾¼ã¿ã¹ã¿ãã¯ã«ãªãã®ã§ï¼ããã§éé¿ããä½æ¥ç¨ã¬ã¸ã¹ã¿ã¯å²è¾¼
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| 194 | * ã¿ã¹ã¿ãã¯ã«ç©ã¾ããï¼
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| 195 | */
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| 196 | stmdb "r0,r1"
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| 197 |
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| 198 | /*
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| 199 | * å²è¾¼ã¿çºçæã®ã³ã³ããã¹ãå¤å®
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| 200 | *
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| 201 | * pswã®bsmãããããå²è¾¼ã¿çºçæã«ä½¿ç¨ãã¦ããã¹ã¿ãã¯æ
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| 202 | å ±ãåå¾
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| 203 | * ããï¼bsmã0ã®å ´åã¯ï¼å²è¾¼ã¿ã¹ã¿ãã¯ã使ç¨ãã¦ãããã¨ã«ãªãã®
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| 204 | * ã§ï¼å²è¾¼ã¿ã³ã³ããã¹ãã§å²è¾¼ã¿ãçºçããã¨å¤æããï¼bsmã1ã®å ´
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| 205 | * åã¯ï¼ã¦ã¼ã¶ã¹ã¿ãã¯ã使ç¨ãã¦ãããã¨ã«ãªãã®ã§ï¼ã¿ã¹ã¯ã³ã³ã
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| 206 | * ãã¹ãã§å²è¾¼ã¿ãçºçããã¨å¤æããï¼å¾è
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| 207 | ã®å ´åã¯ï¼ä½æ¥é åï¼r0
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| 208 | * ã¨r1ï¼ã®ç©ã¿ç´ãã¯å¿
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| 209 | è¦ãªãï¼
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| 210 | */
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| 211 | mvfc r0, psw
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| 212 | and3 r1, r0, 0x8000
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| 213 | beqz r1, L1
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| 214 |
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| 215 | /*
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| 216 | * éé¿ã¬ã¸ã¹ã¿ã®ã¦ã¼ã¶ã¹ã¿ãã¯ã¸ã®ç©ã¿ç´ã
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| 217 | *
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| 218 | * ã¿ã¹ã¯ã³ã³ããã¹ãã§å²è¾¼ã¿ãçºçããå ´åã¯ï¼å²è¾¼ã¿ã¹ã¿ãã¯ã«é
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| 219 | * é¿ããä½æ¥ç¨ã¬ã¸ã¹ã¿r0ã¨r1ãã¦ã¼ã¶ã¹ã¿ãã¯ã«ç©ã¿ç´ãå¿
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| 220 | è¦ãããï¼
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| 221 | */
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| 222 |
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| 223 | or3 r0, r0, 0x80
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| 224 | mvtc r0, psw /* ã¦ã¼ã¶ã¹ã¿ãã¯ã«åæ¿ï¼sp = spuï¼ */
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| 225 |
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| 226 | mvfc r1, spi
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| 227 | ld r0, @(4, r1) /* éé¿ããr0ãå²è¾¼ã¿ã¹ã¿ãã¯ããåãåºã */
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| 228 | st r0, @-sp /* r0ãã¦ã¼ã¶ã¹ã¿ãã¯ã«ç©ã */
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| 229 | ld r0, @r1 /* éé¿ããr1ãå²è¾¼ã¿ã¹ã¿ãã¯ããåãåºã */
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| 230 | st r0, @-sp /* r1ãã¦ã¼ã¶ã¹ã¿ãã¯ã«ç©ã */
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| 231 | addi r1, 8 /* å²è¾¼ã¿ã¹ã¿ãã¯ãä½æ¥ã¹ã¿ãã¯éé¿åã«æ»ã */
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| 232 | mvtc r1, spi /* å²è¾¼ã¿ã¹ã¿ãã¯ä½ç½®ãspiã«ä¿å */
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| 233 | mvfc r0, psw
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| 234 |
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| 235 | L1:
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| 236 | /*
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| 237 | * ã³ã³ããã¹ãã®éé¿
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| 238 | *
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| 239 | * r2-r7, r14, acch, accl, bpc, psw, å²è¾¼ã¿ãã¹ã¯ï¼ICUISTSï¼,psw
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| 240 | * ã®é ã«ã¹ã¿ãã¯ã«éé¿ããï¼ããã§ã¯ï¼å¿
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| 241 | ãpswãr0ã«ä¿åããã¦ã
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| 242 | * ãï¼
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| 243 | */
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| 244 | stmdb "r2,r3,r4,r5,r6,r7,r14"
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| 245 | mvfachi r1
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| 246 | st r1, @-sp /* acchãéé¿ */
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| 247 | mvfaclo r1
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| 248 | st r1, @-sp /* acclãéé¿ */
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| 249 | mvfc r1, bpc
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| 250 | st r1, @-sp /* bpcãéé¿ */
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| 251 | st r0, @-sp /* pswãéé¿ */
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| 252 |
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| 253 | ld24 r1, ICUISTS
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| 254 | ld r0, @r1 /* å²è¾¼ã¿ãã¹ã¯èªã¿è¾¼ã¿ï¼å²è¾¼ã¿è¦æ±ã¯ã¯ãªã¢ãããï¼*/
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| 255 | st r0, @-sp /* å²è¾¼ã¿ãã¹ã¯ãéé¿ */
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| 256 |
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| 257 | lea r1, InterruptHandlerEntry /* å²è¾¼ã¿ãã³ãã©ãã¼ãã«ã®å
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| 258 | é ã¢ãã¬ã¹ãåãåºã */
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| 259 | srli r0, 22 /* å²è¾¼ã¿è¦å çªå·ãåå¾ */
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| 260 | addi r0, -1 /* å²è¾¼ã¿ãã³ãã©ãã¼ãã«ã®ã¤ã³ããã¯ã¹ãè¨ç® */
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| 261 | slli r0, 2 /* å²è¾¼ã¿ãã³ãã©ãã¼ãã«ã®ãªãã»ãããè¨ç® */
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| 262 | add r1, r0 /* å²è¾¼ã¿ãã³ãã©ãã¼ãã«ä¸ã®å²è¾¼ã¿ãã³ãã©ã®ã¢ãã¬ã¹è¨ç® */
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| 263 | ld r1, @r1 /* å²è¾¼ã¿ãã³ãã©ã®èµ·åçªå°ãåãåºã */
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| 264 |
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| 265 | L2:
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| 266 | /*
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| 267 | * å²è¾¼ã¿ãã³ãã©ã®å¼åºã
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| 268 | *
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| 269 | * pswãéé¿ãï¼å²è¾¼ã¿ã¹ã¿ãã¯, å²è¾¼ã¿è¨±å¯ã«ãã¦å²è¾¼ã¿ãã³ãã©ã
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| 270 | * å¼ã³åºãï¼å²è¾¼ã¿ãã³ãã©ããã®æ»ãçªå°ãeit_handler_rã¨ããï¼
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| 271 | * ããã§ï¼å度pswãéé¿ããã®ã¯ï¼eit_handler_rã®æåã§ï¼ä½¿ç¨ãã
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| 272 | * ã¹ã¿ãã¯ãæ»ãå¿
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| 273 | è¦ãããããã§ï¼å¿
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| 274 | ãå²è¾¼ã¿ã¹ã¿ãã¯ã«éé¿ãã¦ã
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| 275 | * ãï¼
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| 276 | */
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| 277 | mvfc r2, psw
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| 278 | and3 r3, r2, 0xff7f
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| 279 | mvtc r3, psw /* å²è¾¼ã¿ã¹ã¿ã㯠*/
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| 280 | st r2, @-sp /* pswãå²è¾¼ã¿ã¹ã¿ãã¯ã«éé¿ */
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| 281 | lea r14, eit_handler_r /* æ»ãçªå°ãè¨å® */
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| 282 | or3 r3, r3, 0x40
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| 283 | mvtc r3, psw /* å²è¾¼ã¿è¨±å¯ */
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| 284 | jmp r1 /* ãã³ãã©èµ·å */
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| 285 |
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| 286 | .text
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| 287 | .align 4
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| 288 | eit_handler_r:
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| 289 | /*
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| 290 | * EITãã³ãã©ããã®å¾©å¸°å¦ç
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| 291 | *
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| 292 | * EITãã³ãã©ã®å®è¡ãçµäºããã¨å¼ã³åºãããï¼å²è¾¼ã¿çºçæã®ã³ã³
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| 293 | * ããã¹ãï¼å²è¾¼ã¿è¦æ±ã®æç¡ï¼ãã£ã¹ããã許å¯ï¼ç¦æ¢ç¶æ
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| 294 | ããï¼é©
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| 295 | * åãªå¾©å¸°å¦çãè¡ãªãï¼
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| 296 | */
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| 297 | ld r0, @sp+
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| 298 | mvtc r0, psw /* å²è¾¼ã¿ã¹ã¿ãã¯ããpswã復帰ï¼EITçºçæ
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| 299 | ã®ã³ã³ããã¹ãã«æ»ãï¼å²è¾¼ã¿ã¯ç¦æ¢ç¶æ
|
---|
| 300 | ï¼
|
---|
| 301 | */
|
---|
| 302 |
|
---|
| 303 | ld24 r1, ICUIMASK
|
---|
| 304 | ld r2, @sp+
|
---|
| 305 | st r2, @r1 /* å²è¾¼ã¿ãã¹ã¯ã®å¾©å¸° */
|
---|
| 306 |
|
---|
| 307 | and3 r0, r0, 0x8000
|
---|
| 308 | beqz r0, recover_int /* EITçºçæã®ã³ã³ããã¹ããå²è¾¼ã¿ã³ã³ãã
|
---|
| 309 | ã¹ãã§ããã°ï¼å¤éå²è¾¼ã¿ã§ããã¨å¤æãï¼
|
---|
| 310 | å³åº§ã«å
|
---|
| 311 | ±é復帰å¦ç㸠*/
|
---|
| 312 |
|
---|
| 313 | /*
|
---|
| 314 | * ã¿ã¹ã¯ã³ã³ããã¹ãã¸ã®å¾©å¸°ã«ã¼ãã³
|
---|
| 315 | *
|
---|
| 316 | * ãã£ã¹ãããï¼ã¿ã¹ã¯ä¾å¤èµ·åè¦æ±ããªãå ´åã¯ï¼å³åº§ã«å
|
---|
| 317 | ±é復帰ã«ã¼
|
---|
| 318 | * ãã³ã«é£ã¶ï¼é
|
---|
| 319 | 延ãã£ã¹ãããå¦çãè¡ãªãï¼ãã£ã¹ãããè¦æ±ããª
|
---|
| 320 | * ããã°å
|
---|
| 321 | ±éã®å¾©å¸°å¦çï¼recover_intï¼ãè¡ãªãï¼
|
---|
| 322 | */
|
---|
| 323 | lea r0, _kernel_reqflg
|
---|
| 324 | ld r1, @r0
|
---|
| 325 | beqz r1, recover_int /* å
|
---|
| 326 | ±é復帰ã«ã¼ãã³ã¸ */
|
---|
| 327 |
|
---|
| 328 | /*
|
---|
| 329 | * ãã£ã¹ãããï¼ã¿ã¹ã¯ä¾å¤èµ·åè¦æ±ãããå ´åã®å¦ç
|
---|
| 330 | *
|
---|
| 331 | * ã¾ãï¼ãã£ã¹ãããè¦æ±ãã©ã°ï¼reqflgï¼ãã¯ãªã¢ããï¼ããã¦ï¼ãã£
|
---|
| 332 | * ã¹ããã許å¯ãã©ã°ï¼enadspï¼ãFALSEã®å ´åã¨ï¼runtskã¨schedtsk
|
---|
| 333 | * ãåãå ´åã«ã¯ï¼ãã£ã¹ãããããã«ï¼ã¿ã¹ã¯ä¾å¤èµ·åå¦çã«ã¼ãã³
|
---|
| 334 | * ã¸é£ã¶ï¼ãã£ã¹ãããã許å¯ããã¦ããï¼runtskã¨schedtskãç°ãªã
|
---|
| 335 | * å ´åã«ã¯ï¼é
|
---|
| 336 | 延ãã£ã¹ãããå¦çãè¡ãï¼
|
---|
| 337 | */
|
---|
| 338 | ldi r1, #0
|
---|
| 339 | st r1, @r0 /* reqflgãã¯ãªã¢ */
|
---|
| 340 |
|
---|
| 341 | lea r0, _kernel_enadsp
|
---|
| 342 | ld r0, @r0
|
---|
| 343 | beqz r0, recover_task /* enaflgã®ãã§ã㯠*/
|
---|
| 344 |
|
---|
| 345 | lea r0, _kernel_runtsk
|
---|
| 346 | lea r1, _kernel_schedtsk
|
---|
| 347 | ld r0, @r0
|
---|
| 348 | ld r1, @r1
|
---|
| 349 | beq r0, r1, recover_task /* runtskã¨schedtskãåãå ´åã¯ã¿
|
---|
| 350 | ã¹ã¯ä¾å¤èµ·åå¦ç㸠*/
|
---|
| 351 |
|
---|
| 352 | /*
|
---|
| 353 | * ä¾å¤ï¼å²è¾¼ã¿åºå£ã§ã®é
|
---|
| 354 | 延ãã£ã¹ãããå¦ç
|
---|
| 355 | *
|
---|
| 356 | * éé¿ãã¦ããªãæ®ãã®ã¬ã¸ã¹ã¿ãéé¿ãï¼å®è¡ç¶æ
|
---|
| 357 | ã¿ã¹ã¯ã®pcã¨spã
|
---|
| 358 | * éé¿ãã¦ãããã£ã¹ãããã£ãå¼ã³åºãï¼
|
---|
| 359 | */
|
---|
| 360 | stmdb "r8,r9,r10,r11,r12,r13"
|
---|
| 361 |
|
---|
| 362 | lea r0, _kernel_runtsk
|
---|
| 363 | ld r0, @r0
|
---|
| 364 |
|
---|
| 365 | lea r1, recover_task_r
|
---|
| 366 | st r1, @(TCB_pc, r0)
|
---|
| 367 | st sp, @(TCB_sp, r0)
|
---|
| 368 | bra _kernel_exit_and_dispatch
|
---|
| 369 |
|
---|
| 370 | .align 4
|
---|
| 371 | recover_task_r:
|
---|
| 372 | ldmia "r13,r12,r11,r10,r9,r8"
|
---|
| 373 |
|
---|
| 374 | recover_task:
|
---|
| 375 | /*
|
---|
| 376 | * ã¿ã¹ã¯ä¾å¤èµ·åå¦ç
|
---|
| 377 | *
|
---|
| 378 | * ããã§ï¼enatexãTRUEã§ï¼texptnã0ã§ãªããã°ï¼ã¿ã¹ã¯ä¾å¤å¦çã«ã¼
|
---|
| 379 | * ãã³ãå¼ã³åºãï¼calltexã®å¦çå
|
---|
| 380 | 容ï¼runtsk->enatexãTRUEã§ï¼
|
---|
| 381 | * runtsk->texptnã0ã§ãªãå ´åã«ï¼call_texrtnãå¼ã¶ï¼ãããã«ã¤ã³
|
---|
| 382 | * ã©ã¤ã³å±éããæ¹ãå¹çãè¯ããï¼å®è£
|
---|
| 383 | ã®ç°¡æåã®ããã«calltex ã
|
---|
| 384 | * å¼ã³åºãï¼
|
---|
| 385 | */
|
---|
| 386 | bl _kernel_calltex
|
---|
| 387 |
|
---|
| 388 | recover_int:
|
---|
| 389 | /*
|
---|
| 390 | * EITå
|
---|
| 391 | ±é復帰å¦çï¼ä½åªå
|
---|
| 392 | 度å²è¾¼ã¿ã¸ã®å¾©å¸°å«ãï¼
|
---|
| 393 | *
|
---|
| 394 | * éé¿ããé çªï¼r2-r7, r14, acch, accl, bpc, pswï¼ã®éé ã§ã¹ã¿ã
|
---|
| 395 | * ã¯ããåãåºãã¦å¾©å¸°ããï¼ã¾ãï¼ä½æ¥ç¨ã¬ã¸ã¹ã¿ï¼r0ï¼r1ï¼ã復帰
|
---|
| 396 | * ããï¼
|
---|
| 397 | */
|
---|
| 398 | ld r0, @sp+
|
---|
| 399 | mvtc r0, psw /* pswã復帰 */
|
---|
| 400 | ld r0, @sp+
|
---|
| 401 | mvtc r0, bpc /* bpcã復帰 */
|
---|
| 402 | ld r0, @sp+
|
---|
| 403 | mvtaclo r0 /* acclã復帰 */
|
---|
| 404 | ld r0, @sp+
|
---|
| 405 | mvtachi r0 /* acchlã復帰 */
|
---|
| 406 | ldmia "r14,r7,r6,r5,r4,r3,r2" /* ãã®ä»ã®ã¬ã¸ã¹ã¿ã復帰 */
|
---|
| 407 | ldmia "r1,r0" /* ä½æ¥ç¨ã¬ã¸ã¹ã¿ã®å¾©å¸° */
|
---|
| 408 | rte /* å²è¾¼ã¿å¦çãã復帰 */
|
---|
| 409 |
|
---|
| 410 | .section ".vector","ax"
|
---|
| 411 | /*
|
---|
| 412 | * ãã©ããã®ã¨ã³ããªé¨ : ãã©ããçªå·ã®æ ¼ç´
|
---|
| 413 | */
|
---|
| 414 | .irp num,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
|
---|
| 415 | .align 4
|
---|
| 416 |
|
---|
| 417 | _kernel__trap_handler_\num:
|
---|
| 418 | stmdb "r0,r1"
|
---|
| 419 | ldi r1, #((\num + EXC_TRAP00 - 1) * 4)
|
---|
| 420 | bra _exception_handler
|
---|
| 421 | .endr
|
---|
| 422 |
|
---|
| 423 | /*
|
---|
| 424 | * ä¾å¤ï¼ãã©ãããã³ãã©å
|
---|
| 425 | ¥å£å¦ç
|
---|
| 426 | *
|
---|
| 427 | * ä¾å¤ãçºçããå ´åã«ã¯ï¼ã¹ã¯ã©ããã¬ã¸ã¹ã¿ãéé¿ãã¦ä¾å¤è¦å ï¼r1ã«
|
---|
| 428 | * å
|
---|
| 429 | ¥ã£ã¦ããï¼ã«å¯¾å¿ããä¾å¤ãã³ãã©ãå¼ã³åºãï¼ä¾å¤ãã³ãã©ããã®å¾©
|
---|
| 430 | * 帰å¦çã¯ï¼å²è¾¼ã¿ãã³ãã©ããã®å¾©å¸°å¦çã¨å
|
---|
| 431 | ±éï¼eit_handler_rï¼ã§ããï¼
|
---|
| 432 | *
|
---|
| 433 | * ä¾å¤çºçæã®ãã¼ãã¦ã¨ã¢ã®åä½
|
---|
| 434 | *
|
---|
| 435 | * pswã¬ã¸ã¹ã¿ä¸ã®smï¼ieï¼pmï¼cããããbsmï¼bieï¼bpmï¼bcãããã«éé¿
|
---|
| 436 | * ããï¼bpcã«ã¯ä¾å¤ãèµ·ãããå½ä»¤ã®pcå¤ãå
|
---|
| 437 | ¥ãï¼
|
---|
| 438 | *
|
---|
| 439 | * bsm <- sm
|
---|
| 440 | * bie <- ie
|
---|
| 441 | * bpm <- pm
|
---|
| 442 | * bc <- c
|
---|
| 443 | * bpc <- ä¾å¤ãèµ·ãããå½ä»¤ã®ã¢ãã¬ã¹
|
---|
| 444 | *
|
---|
| 445 | * pswã¬ã¸ã¹ã¿ä¸ã®smï¼ieï¼pmï¼cãããã以ä¸ã®ããã«æ´æ°ããï¼
|
---|
| 446 | *
|
---|
| 447 | * sm <- ä¸å¤
|
---|
| 448 | * ie <- 0
|
---|
| 449 | * pm <- 0
|
---|
| 450 | * c <- 0
|
---|
| 451 | *
|
---|
| 452 | * ã¬ã¸ã¹ã¿ã®ç©ã¿æ¹
|
---|
| 453 | *
|
---|
| 454 | * r0-r1ï¼ä½æ¥é åï¼ãã¯ã¿ã®æåã§éé¿ï¼
|
---|
| 455 | * r2-r7ï¼r14ï¼acc(hi/lo)ï¼bpcï¼pswï¼ICUIMASKï¼ä¾å¤ãã³ãã©å¼åºåï¼
|
---|
| 456 | *
|
---|
| 457 | * ããã§ï¼ICUISTSã§ã¯ãªãICUIMASKãéé¿ããã®ã¯ï¼ä¾å¤å¦çä¸ã«å¤é¨å²
|
---|
| 458 | * è¾¼ã¿ãçºçããå ´åã«ï¼ICUISTSã®èªè¾¼ã¿ã«ããå²è¾¼ã¿è¦å ãã¯ãªã¢ãã
|
---|
| 459 | * ã¦ãã¾ãã®ãé²ãããã§ããï¼
|
---|
| 460 | */
|
---|
| 461 | _exception_handler:
|
---|
| 462 |
|
---|
| 463 | stmdb "r2,r3,r4,r5,r6,r7,r14"
|
---|
| 464 | mvfachi r0
|
---|
| 465 | st r0, @-sp
|
---|
| 466 | mvfaclo r0
|
---|
| 467 | st r0, @-sp
|
---|
| 468 | mvfc r0, bpc
|
---|
| 469 | st r0, @-sp
|
---|
| 470 | mvfc r2, psw
|
---|
| 471 | st r2, @-sp
|
---|
| 472 | ld24 r0, ICUIMASK
|
---|
| 473 | ld r0, @r0
|
---|
| 474 | st r0, @-sp
|
---|
| 475 |
|
---|
| 476 | lea r0, ExceptionHandlerEntry
|
---|
| 477 | add r0, r1
|
---|
| 478 | ld r1, @r0 /* ä¾å¤ãã³ãã©ã®ã¢ãã¬ã¹ãåå¾ */
|
---|
| 479 |
|
---|
| 480 | mv r0, sp /* ã¹ã¿ãã¯ã®ä½ç½®ãä¾å¤ãã³ãã©ã®å¼æ°
|
---|
| 481 | ã«è¨å® */
|
---|
| 482 | and3 r3, r2, 0x7f00
|
---|
| 483 | srli r3, 8
|
---|
| 484 | mvtc r3, psw /* å²è¾¼ã¿ã¹ã¿ãã¯ï¼å²è¾¼ã¿è¨±å¯ç¶æ
|
---|
| 485 | ã« */
|
---|
| 486 | st r2, @-sp /* ä¾å¤çºçç´å¾ã®pswãå²è¾¼ã¿ã¹ã¿ãã¯ã«éé¿ */
|
---|
| 487 | lea r14, eit_handler_r
|
---|
| 488 | jmp r1
|
---|
| 489 |
|
---|
| 490 | Function _kernel_dispatch
|
---|
| 491 | /*
|
---|
| 492 | * ã¿ã¹ã¯åæ¿ãã®ããã®éé¿å¦ç
|
---|
| 493 | *
|
---|
| 494 | * ãã®ã«ã¼ãã³ã¯ï¼ã¿ã¹ã¯ã³ã³ããã¹ãï¼CPUããã¯ç¶æ
|
---|
| 495 | ï¼ãã£ã¹ãã
|
---|
| 496 | * ã許å¯ç¶æ
|
---|
| 497 | ã§å¼ã³åºãããï¼å¼åºå
|
---|
| 498 | ã§ã¯ä¿åãããªãã¬ã¸ã¹ã¿ãã¹ã¿ã
|
---|
| 499 | * ã¯ã«éé¿ãï¼pcã¨spã¯TCBã«éé¿ããï¼pcã¯ãã£ã¹ãããã£åºå£å¦ç
|
---|
| 500 | * ï¼dispatch_rï¼ã«è¨å®ããï¼
|
---|
| 501 | */
|
---|
| 502 | stmdb "r8,r9,r10,r11,r12,r13,r14"
|
---|
| 503 |
|
---|
| 504 | lea r0, _kernel_runtsk
|
---|
| 505 | lea r1, dispatch_r
|
---|
| 506 | ld r0, @r0
|
---|
| 507 | st r1, @(TCB_pc, r0) /* 復帰ããæã¯dispatch_rã«å¸°ã£ã¦ãã */
|
---|
| 508 | st sp, @(TCB_sp, r0) /* ã¹ã¿ãã¯ãã¤ã³ã¿ãéé¿ */
|
---|
| 509 |
|
---|
| 510 | Function _kernel_exit_and_dispatch
|
---|
| 511 | /*
|
---|
| 512 | * ã¿ã¹ã¯åæ¿ãã®åå¦ç
|
---|
| 513 | *
|
---|
| 514 | * schedtskã空ã§ãªããããã§ãã¯ããï¼schedtskã空ã§ãªãå ´åã¯ï¼
|
---|
| 515 | * ã¿ã¹ã¯åæ¿ãå¦çã«ç§»ãï¼ç©ºã®å ´åã¯ï¼å²è¾¼ã¿ã許å¯ãã¦ã«ã¼ããã
|
---|
| 516 | * å¦çã«ç§»ãï¼
|
---|
| 517 | */
|
---|
| 518 | xor r0, r0
|
---|
| 519 | mvtc r0, psw /* å²è¾¼ã¿ç¦æ¢ï¼å²è¾¼ã¿ã¹ã¿ã㯠*/
|
---|
| 520 |
|
---|
| 521 | lea r1, _kernel_schedtsk
|
---|
| 522 | L6: ld r0, @r1
|
---|
| 523 | bnez r0, L7 /* schedtskã®æç¡ããã§ã㯠*/
|
---|
| 524 |
|
---|
| 525 | /*
|
---|
| 526 | * èµ·åãã¹ãã¿ã¹ã¯ããªãå ´åã®å¦ç
|
---|
| 527 | *
|
---|
| 528 | * èµ·åãã¹ãã¿ã¹ã¯ããªãå ´åã¯ï¼å²è¾¼ã¿ã許å¯ãã¦ã«ã¼ãããï¼ã«ã¼
|
---|
| 529 | * ãã®éä¸ã§å²è¾¼ã¿ã許å¯ãï¼å®è¡å¯è½ã¿ã¹ã¯ãå¾
|
---|
| 530 | ã¤ï¼
|
---|
| 531 | */
|
---|
| 532 | ldi r0, 0x40
|
---|
| 533 | mvtc r0, psw /* å²è¾¼ã¿è¨±å¯ */
|
---|
| 534 | xor r0, r0
|
---|
| 535 | mvtc r0, psw /* å²è¾¼ã¿ç¦æ¢ */
|
---|
| 536 |
|
---|
| 537 | lea r0, _kernel_reqflg
|
---|
| 538 | xor r2, r2
|
---|
| 539 | st r2, @r0 /* reqflg = 0 */
|
---|
| 540 | bl L6
|
---|
| 541 |
|
---|
| 542 | L7:
|
---|
| 543 | /*
|
---|
| 544 | * ã¿ã¹ã¯åæ¿ãå¦ç
|
---|
| 545 | *
|
---|
| 546 | * å®è¡ä¸ã¿ã¹ã¯ï¼runtskï¼ã«æé«åªå
|
---|
| 547 | é ä½ã¿ã¹ã¯ï¼schedtskï¼ãè¨å®ãï¼
|
---|
| 548 | * ã¹ã¿ãã¯ãã¦ã¼ã¶ã¹ã¿ãã¯ã«åæ¿ããï¼runtskã®TCBã®spã¨pcã復帰
|
---|
| 549 | * ããï¼ããã§ã¯ï¼r0 = schedtskã§ããï¼
|
---|
| 550 | */
|
---|
| 551 | lea r2, _kernel_runtsk
|
---|
| 552 | st r0, @r2 /* runtsk = schedtsk */
|
---|
| 553 |
|
---|
| 554 | ldi r1, 0x80
|
---|
| 555 | mvtc r1, psw /* ã¦ã¼ã¶ã¹ã¿ãã¯ï¼å²è¾¼ã¿ç¦æ¢ */
|
---|
| 556 |
|
---|
| 557 | ld sp, @(TCB_sp, r0) /* ã¹ã¿ãã¯ãã¤ã³ã¿ã復帰 */
|
---|
| 558 | ld r0, @(TCB_pc, r0) /* ããã°ã©ã ã«ã¦ã³ã¿ã復帰 */
|
---|
| 559 | jmp r0
|
---|
| 560 |
|
---|
| 561 | .align 4
|
---|
| 562 | Label dispatch_r
|
---|
| 563 | /*
|
---|
| 564 | * ãã£ã¹ãããã£ã®åºå£å¦ç
|
---|
| 565 | *
|
---|
| 566 | * dispatchã§éé¿ããã¬ã¸ã¹ã¿ã復帰ãï¼ã¿ã¹ã¯ä¾å¤å¦çã«ã¼ãã³ãå¼
|
---|
| 567 | * ã³åºãï¼
|
---|
| 568 | */
|
---|
| 569 | bl _kernel_calltex
|
---|
| 570 | ldmia "r14,r13,r12,r11,r10,r9,r8"
|
---|
| 571 | rts
|
---|
| 572 |
|
---|
| 573 | Function _kernel_activate_r
|
---|
| 574 | /*
|
---|
| 575 | * ã¿ã¹ã¯ã®èµ·åã«ã¼ãã³
|
---|
| 576 | *
|
---|
| 577 | * runtskã®ã¿ã¹ã¯åæåãããã¯ããã¿ã¹ã¯é¢æ°ã¨æ¡å¼µæ
|
---|
| 578 | å ±ãåãåºã
|
---|
| 579 | * ã¦ï¼æ¡å¼µæ
|
---|
| 580 | å ±ãå¼æ°ã¬ã¸ã¹ã¿ï¼r0ï¼ã«è¨å®ããï¼ext_tskãå¼ã³åºã
|
---|
| 581 | * ãã«ã¿ã¹ã¯ãçµäºããå ´åãããããï¼ã¿ã¹ã¯é¢æ°ã®æ»ãçªå°ã
|
---|
| 582 | * ext_tskã«è¨å®ããï¼èµ·åæºåãå
|
---|
| 583 | ¨ã¦å®äºãã¦ããï¼å²è¾¼ã¿ã許å¯ã
|
---|
| 584 | * ã¦ã¿ã¹ã¯é¢æ°ã«é£ã¶ï¼
|
---|
| 585 | */
|
---|
| 586 | lea r2, _kernel_runtsk
|
---|
| 587 | ld r2, @r2
|
---|
| 588 | ld r2, @(TCB_tinib, r2) /* r2 = runtsk->tinib */
|
---|
| 589 | ld r0, @(TINIB_exinf, r2)
|
---|
| 590 | ld r1, @(TINIB_task, r2)
|
---|
| 591 |
|
---|
| 592 | lea r14, ext_tsk /* ã¿ã¹ã¯ã®æ»ãçªå°ãext_tskã« */
|
---|
| 593 |
|
---|
| 594 | ldi r2, 0xc0
|
---|
| 595 | mvtc r2, psw /* ã¦ã¼ã¶ã¹ã¿ãã¯ï¼å²è¾¼ã¿è¨±å¯ */
|
---|
| 596 | jmp r1 /* ã¿ã¹ã¯é¢æ°ã¸ */
|
---|