[302] | 1 | /*
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| 2 | * TOPPERS/ASP Kernel
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| 3 | * Toyohashi Open Platform for Embedded Real-Time Systems/
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| 4 | * Advanced 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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[305] | 8 | * Copyright (C) 2006-2016 by Embedded and Real-Time Systems Laboratory
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[302] | 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»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§
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| 13 | * ã¢ï¼æ¬ã½ããã¦ã§ã¢ãæ¹å¤ãããã®ãå«ãï¼ä»¥ä¸åãï¼ã使ç¨ã»è¤è£½ã»æ¹
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| 14 | * å¤ã»åé
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| 15 | å¸ï¼ä»¥ä¸ï¼å©ç¨ã¨å¼ã¶ï¼ãããã¨ãç¡åã§è¨±è«¾ããï¼
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| 16 | * (1) æ¬ã½ããã¦ã§ã¢ãã½ã¼ã¹ã³ã¼ãã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼ä¸è¨ã®èä½
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| 17 | * 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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| 18 | * ã¹ã³ã¼ãä¸ã«å«ã¾ãã¦ãããã¨ï¼
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| 19 | * (2) æ¬ã½ããã¦ã§ã¢ãï¼ã©ã¤ãã©ãªå½¢å¼ãªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 20 | * ç¨ã§ããå½¢ã§åé
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| 21 | å¸ããå ´åã«ã¯ï¼åé
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| 22 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨
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| 23 | * è
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| 24 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨
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| 25 | * ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 26 | * (3) æ¬ã½ããã¦ã§ã¢ãï¼æ©å¨ã«çµã¿è¾¼ããªã©ï¼ä»ã®ã½ããã¦ã§ã¢éçºã«ä½¿
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| 27 | * ç¨ã§ããªãå½¢ã§åé
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| 28 | å¸ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºããã
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| 29 | * ã¨ï¼
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| 30 | * (a) åé
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| 31 | å¸ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 32 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®è
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| 33 | * ä½æ¨©è¡¨ç¤ºï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 34 | * (b) åé
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| 35 | å¸ã®å½¢æ
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| 36 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼TOPPERSããã¸ã§ã¯ãã«
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| 37 | * å ±åãããã¨ï¼
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| 38 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 39 | * 害ãããï¼ä¸è¨èä½æ¨©è
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[305] | 40 | ããã³TOPPERSããã¸ã§ã¯ããå
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[302] | 41 | 責ãããã¨ï¼
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| 42 | * ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®ã¦ã¼ã¶ã¾ãã¯ã¨ã³ãã¦ã¼ã¶ããã®ãããªãç
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| 43 | * ç±ã«åºã¥ãè«æ±ãããï¼ä¸è¨èä½æ¨©è
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| 44 | ããã³TOPPERSããã¸ã§ã¯ãã
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| 45 | * å
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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¦ï¼ç¹å®ã®ä½¿ç¨ç®ç
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| 51 | * ã«å¯¾ããé©åæ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ããªãï¼ã¾ãï¼æ¬ã½ããã¦ã§
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| 52 | * ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ害ã«é¢ãã¦ãï¼ã
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| 53 | * ã®è²¬ä»»ãè² ããªãï¼
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| 54 | *
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| 55 | * $Id: gic_support.S 522 2016-01-14 06:56:53Z ertl-hiro $
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| 56 | */
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| 57 |
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| 58 | /*
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| 59 | * ã«ã¼ãã«ã®å²è¾¼ã¿ã³ã³ããã¼ã©ä¾åé¨ã®ã¢ã»ã³ããªè¨èªé¨ï¼GICç¨ï¼
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| 60 | */
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| 61 |
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| 62 | #define TOPPERS_MACRO_ONLY
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| 63 | #define TOPPERS_ASM_MACRO
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| 64 | #define UINT_C(val) (val) /* uint_tåã®å®æ°ãä½ããã¯ã */
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| 65 | #define ULONG_C(val) (val) /* ulong_tåã®å®æ°ãä½ããã¯ã */
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| 66 | #define CAST(type, val) (val) /* åãã£ã¹ããè¡ããã¯ã */
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| 67 | #define GIC_REG(base, offset) ((base) + (offset))
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| 68 | #include "kernel_impl.h"
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| 69 | #include "core_asm.inc"
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| 70 |
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| 71 | #if __TARGET_ARCH_ARM < 6
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| 72 | #error gic_suport.S supports ARMv6 or later.
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| 73 | #endif /* __TARGET_ARCH_ARM < 6 */
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| 74 |
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| 75 | /*
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| 76 | * å²è¾¼ã¿ãã³ãã©å¼åºãåã®å²è¾¼ã¿ã³ã³ããã¼ã©æä½
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| 77 | *
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| 78 | * r4ã«å²è¾¼ã¿çªå·ãè¿ãï¼irc_end_intã§ç¨ããæ
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| 79 | å ±ï¼å²è¾¼ã¿çºçåã®å²è¾¼ã¿
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| 80 | * åªå
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| 81 | 度ãã¹ã¯ï¼ãï¼ã¹ã¿ãã¯ã«ä¿åããï¼
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| 82 | */
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| 83 | ATEXT
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| 84 | AALIGN(2)
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| 85 | AGLOBAL(irc_begin_int)
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| 86 | ALABEL(irc_begin_int)
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| 87 | /*
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| 88 | * å²è¾¼ã¿è¦å ãåå¾ããï¼
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| 89 | */
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| 90 | ldr r1, =GICC_IAR
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| 91 | ldr r3, [r1]
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| 92 |
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| 93 | /*
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| 94 | * å²è¾¼ã¿è¦å ã®å²è¾¼ã¿åªå
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| 95 | 度ãæ±ãï¼å²è¾¼ã¿åªå
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| 96 | 度ãã¹ã¯ã«è¨å®ããï¼
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| 97 | */
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| 98 | ldr r1, =GICC_RPR /* åãä»ããå²è¾¼ã¿ã®å²è¾¼ã¿åªå
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| 99 | 度ãåå¾ */
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| 100 | ldr r0, [r1]
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| 101 | ldr r1, =GICC_PMR /* å²è¾¼ã¿çºçåã®å²è¾¼ã¿åªå
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| 102 | 度ãåå¾ */
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| 103 | ldr r2, [r1]
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| 104 | str r0, [r1] /* æ°ããå²è¾¼ã¿åªå
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| 105 | 度ãã¹ã¯ãã»ãããã */
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| 106 | // DATA_SYNC_BARRIER /* å²è¾¼ã¿åªå
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| 107 | 度ãã¹ã¯ãã»ãããããã®ãå¾
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| 108 | 㤠*/
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| 109 | #if __TARGET_ARCH_ARM == 6
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| 110 | mov r0, #0
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| 111 | mcr p15, 0, r0, c7, c10, 4
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| 112 | #elif __TARGET_ARCH_ARM == 7
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| 113 | dsb
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| 114 | #endif /* __TARGET_ARCH_ARM == 7 */
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| 115 | push {r2} /* irc_end_intã§ç¨ããæ
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| 116 | å ±ãä¿å */
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| 117 |
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| 118 | /*
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| 119 | * EOIãçºè¡ããï¼
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| 120 | */
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| 121 | ldr r1, =GICC_EOIR /* EOIã¬ã¸ã¹ã¿ã¸ã®æ¸è¾¼ã¿ */
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| 122 | str r3, [r1]
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| 123 |
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| 124 | /*
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| 125 | * å²è¾¼ã¿çªå·ãè¿å¤ã¨ãã¦ãªã¿ã¼ã³ããï¼
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| 126 | */
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| 127 | lsl r4, r3, #22 /* ä¸ä½10ããããåãåºã */
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| 128 | lsr r4, r4, #22
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| 129 | bx lr
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| 130 |
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| 131 | /*
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| 132 | * å²è¾¼ã¿ãã³ãã©å¼åºãå¾ã®å²è¾¼ã¿ã³ã³ããã¼ã©æä½
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| 133 | */
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| 134 | ATEXT
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| 135 | AALIGN(2)
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| 136 | AGLOBAL(irc_end_int)
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| 137 | ALABEL(irc_end_int)
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| 138 | /*
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| 139 | * å²è¾¼ã¿åªå
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| 140 | 度ãã¹ã¯ãå
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| 141 | ã«æ»ãï¼
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| 142 | */
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[305] | 143 | pop {r2} /* irc_begin_intã§ä¿åããæ
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[302] | 144 | å ±ã復帰 */
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| 145 | ldr r1, =GICC_PMR /* å²è¾¼ã¿åªå
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| 146 | 度ãã¹ã¯ãå
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| 147 | ã«æ»ã */
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| 148 | str r2, [r1]
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| 149 | bx lr
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| 150 |
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| 151 | /*
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| 152 | * CPUä¾å¤çºçåã®å²è¾¼ã¿åªå
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| 153 | 度ã®åå¾
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| 154 | *
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| 155 | * CPUä¾å¤ã®çºçã§å²è¾¼ã¿åªå
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| 156 | 度ãå¤ãããã¨ã¯ãªãããï¼ç¾å¨ã®å²è¾¼ã¿åªå
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| 157 |
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| 158 | * 度ãè¿ãï¼
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| 159 | */
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| 160 | ATEXT
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| 161 | AALIGN(2)
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| 162 | AGLOBAL(irc_get_intpri)
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| 163 | ALABEL(irc_get_intpri)
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| 164 | /*
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| 165 | * å²è¾¼ã¿åªå
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| 166 | 度ãã¹ã¯ãå¤é¨è¡¨ç¾ã«å¤æãã¦è¿ãï¼
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| 167 | */
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[305] | 168 | ldr r1, =GICC_PMR
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[302] | 169 | ldr r0, [r1]
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| 170 | asr r0, r0, #GIC_PRI_SHIFT
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| 171 | sub r0, r0, #GIC_PRI_MASK
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| 172 | bx lr
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| 173 |
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| 174 | /*
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| 175 | * CPUä¾å¤ãã³ãã©å¼åºãåã®å²è¾¼ã¿ã³ã³ããã¼ã©æä½
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| 176 | *
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| 177 | * irc_end_excã§ç¨ããæ
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| 178 | å ±ï¼CPUä¾å¤çºçåã®å²è¾¼ã¿åªå
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| 179 | 度ãã¹ã¯ï¼ãï¼ã¹ã¿ã
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| 180 | * ã¯ã«ä¿åããï¼
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| 181 | */
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| 182 | ATEXT
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| 183 | AALIGN(2)
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| 184 | AGLOBAL(irc_begin_exc)
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| 185 | ALABEL(irc_begin_exc)
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| 186 | /*
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| 187 | * å²è¾¼ã¿åªå
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| 188 | 度ãã¹ã¯ãä¿åããï¼
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| 189 | */
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| 190 | ldr r1, =GICC_PMR /* ç¾å¨ã®å²è¾¼ã¿åªå
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| 191 | 度ãåå¾ */
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| 192 | ldr r2, [r1]
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| 193 | push {r2} /* irc_end_excã§ç¨ããæ
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| 194 | å ±ãä¿å */
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| 195 | bx lr
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| 196 |
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| 197 | /*
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| 198 | * CPUä¾å¤ãã³ãã©å¼åºãå¾ã®å²è¾¼ã¿ã³ã³ããã¼ã©æä½
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| 199 | */
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| 200 | ATEXT
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| 201 | AALIGN(2)
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| 202 | AGLOBAL(irc_end_exc)
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| 203 | ALABEL(irc_end_exc)
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| 204 | /*
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| 205 | * å²è¾¼ã¿åªå
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| 206 | 度ãã¹ã¯ãå
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| 207 | ã«æ»ãï¼
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| 208 | */
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| 209 | pop {r2} /* irc_begin_excã§ä¿åããæ
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| 210 | å ±ã復帰 */
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| 211 | ldr r1, =GICC_PMR /* å²è¾¼ã¿åªå
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| 212 | 度ãã¹ã¯ãå
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| 213 | ã«æ»ã */
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| 214 | str r2, [r1]
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| 215 | bx lr
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