[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) 2000,2001 by Embedded and Real-Time Systems Laboratory
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| 7 | * Toyohashi Univ. of Technology, JAPAN
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| 8 | * Copyright (C) 2002 by Monami software, Limited Partners.
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| 9 | * Copyright (C) 2008- by Monami Software Limited Partnership, 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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| 40 | ããã³TOPPERSããã¸ã§ã¯ããå
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| 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: cpu_support.S,v 1.1 2004/07/21 02:49:36 monaka Exp $
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| 56 | */
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| 57 |
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| 58 | #define _MACRO_ONLY
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| 59 | #include "jsp_kernel.h"
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| 60 | #include "offset.h"
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| 61 |
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| 62 | .globl activate_r
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| 63 | activate_r:
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| 64 | sti
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| 65 | popl %eax
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| 66 | jmp *%eax
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| 67 |
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| 68 | /*
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| 69 | * Task dispatcher
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| 70 | */
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| 71 | .text
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| 72 | .globl dispatch
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| 73 | .globl exit_and_dispatch
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| 74 | dispatch:
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| 75 | pusha
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| 76 | movl runtsk, %ebx
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| 77 | movl %esp, TCB_esp(%ebx)
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| 78 | movl $dispatch_r, %eax
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| 79 | movl %eax, TCB_eip(%ebx)
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| 80 | exit_and_dispatch:
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| 81 | .globl dispatch_loop
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| 82 | dispatch_loop:
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| 83 | movl schedtsk, %ebx
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| 84 | movl %ebx, runtsk
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| 85 | cmpl $0, %ebx
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| 86 | jne dispatch_1
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| 87 | movl STACKTOP, %esp
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| 88 | movl $1, nest
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| 89 | 0:
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| 90 | sti
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| 91 | hlt
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| 92 | cli
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| 93 | cmpl $0, reqflg
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| 94 | je 0b
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| 95 | movl $0, reqflg
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| 96 | movl $0, nest
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| 97 | jmp dispatch_loop
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| 98 | dispatch_1:
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| 99 | movl TCB_esp(%ebx), %esp
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| 100 | movl TCB_eip(%ebx), %eax
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| 101 | jmp *%eax
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| 102 |
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| 103 | dispatch_r:
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| 104 | call calltex
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| 105 | popa
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| 106 | ret
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| 107 |
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| 108 | /*
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| 109 | * CPUä¾å¤ãã³ãã©ã®åºå
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| 110 | ¥å£å¦ç
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| 111 | */
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| 112 |
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| 113 | /* %ecxã«ä¾å¤çªå· */
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| 114 | /* %edxã«CPUä¾å¤ã«é¢ããæ
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| 115 | å ±ãè¨æ¶ãã¦ããé åã®å
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| 116 | é çªå° */
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| 117 | .extern exc_table
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| 118 | __exception_1:
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| 119 | cld
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| 120 | movl %esp, %ebx
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| 121 | movl 12(%ebx), %edx
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| 122 | exception:
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| 123 | cmpl $0, nest
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| 124 | jne exception_2
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| 125 | movl %esp, %eax
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| 126 | movl STACKTOP, %esp
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| 127 | pushl %eax
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| 128 | exception_2:
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| 129 | pushl %edx
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| 130 | movl exc_table(,%ecx,4), %eax
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| 131 | testl %eax, %eax
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| 132 | jz 1f
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| 133 | incl nest
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| 134 | testb $2, 13(%edx)
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| 135 | jz 0f
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| 136 | sti
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| 137 | 0:
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| 138 | call *%eax
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| 139 | cli
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| 140 | decl nest
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| 141 | 1:
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| 142 | addl $4, %esp
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| 143 | cmpl $0, nest
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| 144 | jne exception_3
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| 145 | popl %eax
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| 146 | movl %eax, %esp
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| 147 | cmpl $0, reqflg
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| 148 | je exception_3
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| 149 | ret_exc:
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| 150 | movl $0, reqflg
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| 151 | cmpl $0, enadsp
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| 152 | je ret_exc_r
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| 153 | movl runtsk, %ebx
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| 154 | cmpl %ebx, schedtsk
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| 155 | je ret_exc_r
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| 156 | movl %esp, TCB_esp(%ebx)
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| 157 | movl $ret_exc_r, %eax
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| 158 | movl %eax, TCB_eip(%ebx)
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| 159 | jmp dispatch_loop
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| 160 | ret_exc_r:
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| 161 | call calltex
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| 162 | exception_3:
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| 163 | popa
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| 164 | addl $4, %esp
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| 165 | iret
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| 166 |
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| 167 | #define exception(excno) \
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| 168 | .global exception##excno ; \
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| 169 | exception##excno: ; \
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| 170 | pushl $0 ; \
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| 171 | pusha ; \
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| 172 | movl $excno, %ecx ; \
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| 173 | jmp __exception_1
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| 174 |
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| 175 | #define error_exception(excno) \
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| 176 | .global exception##excno ; \
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| 177 | exception##excno: ; \
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| 178 | pusha ; \
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| 179 | movl $excno, %ecx ; \
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| 180 | jmp __exception_1 ; \
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| 181 |
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| 182 |
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| 183 | exception(0)
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| 184 | exception(1)
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| 185 | exception(2)
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| 186 | exception(3)
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| 187 | exception(4)
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| 188 | exception(5)
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| 189 | exception(6)
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| 190 | exception(7)
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| 191 | error_exception(8)
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| 192 | exception(9)
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| 193 | error_exception(10)
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| 194 | error_exception(11)
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| 195 | error_exception(12)
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| 196 | error_exception(13)
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| 197 | error_exception(14)
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| 198 | exception(16)
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| 199 | error_exception(17)
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| 200 | exception(18)
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| 201 | exception(19)
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