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) 2000-2003 by Industrial Technology Institute,
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9 | * Miyagi Prefectural Government, JAPAN
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10 | *
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11 | * ä¸è¨è使¨©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®è使¨©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 | * 使¨©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¨è使¨©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¨è使¨©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«çãããããªãæå®³ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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51 | */
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52 |
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53 | #include "jsp_kernel.h"
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54 | #include <hw_serial.h> /* ã·ãªã¢ã«ã³ã³ããã¼ã©é¢ä¿ */
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55 |
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56 | /* å²è¾¼ã¿ã³ã³ããã¼ã©ã«ç¨ããå²è¾¼ã¿ãã¹ã¯ã®æ¬ä¼¼ãã¼ãã« */
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57 | ICU_IPM icu_intmask_table[ TMAX_ALL_INTNO ];
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58 |
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59 | /*
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60 | * ã¿ã¼ã²ããã·ã¹ãã ä¾å åæåã«ã¼ãã³
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61 | */
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62 | void sys_initialize() {
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63 |
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64 | ICU_IPM icu_ipm0 = {INIT_INT0M, INIT_INT1M};
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65 |
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66 | /*
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67 | * å¤é¨å²è¾¼ã¿ã³ã³ããã¼ã©ã®å²è¾¼ã¿ãã¹ã¯ã®åæå
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68 | */
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69 | icu_set_ipm( &icu_ipm0 );
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70 |
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71 | /*
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72 | * ããã¼è¡¨ç¤ºç¨ã·ãªã¢ã«ãã¼ãã®åæå
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73 | */
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74 | sio_init();
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75 | }
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76 |
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77 | /*
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78 | * ã¿ã¼ã²ããã·ã¹ãã ã®çµäºã«ã¼ãã³
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79 | */
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80 | void sys_exit(void) {
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81 |
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82 | #ifndef GDB_STUB
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83 | while (1);
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84 | #else /* GDB_STUB */
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85 | vr5500_exit();
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86 | #endif /* GDB_STUB */
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87 |
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88 | }
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89 |
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90 | /*
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91 | * GDB STUB / ç´æ¥å¼åºã ã³ã³ã½ã¼ã«å¼åºãã«ã¼ãã³
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92 | */
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93 |
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94 | /*
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95 | * gdb stub ã«ããã³ã³ã½ã¼ã«åºå
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96 | */
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97 | /* a0($4) = 0xfe00, a1($5) = åºåããããã£ã©ã¯ã¿ ã代å
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98 | ¥ãã¦ã
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99 | SYSCALL ä¾å¤ãçºçãããã */
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100 |
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101 | /* ãã®é¢æ°ãå¼ã³åºãæã«ã¯ãã¹ãã¼ã¿ã¹ã¬ã¸ã¹ã¿ã®EXLããã = 0 ã§å¼ã³åºããã¨ã
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102 | ãªããç¾å¨ãã«ã¼ãã«ã§ã¯ãããã¼è¡¨ç¤ºæãã·ãªã¢ã«åºåæã«å¼åºãè¡ã£ã¦ããã*/
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103 | Inline void stub_putc(int c) {
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104 |
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105 | Asm(" move $5, %0; \
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106 | li $4, 0xfe00; \
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107 | syscall; \
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108 | nop"
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109 | :: "r"(c)
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110 | : "$4","$5" );
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111 | }
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112 |
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113 | #ifdef GDB_STUB
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114 | #define vr5500_putc(c) stub_putc( c )
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115 | #else /* GDB_STUB */
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116 | #define vr5500_putc(c) sio_snd_chr_pol( c )
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117 | #endif /* GDB_STUB */
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118 |
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119 | /*
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120 | * ã·ã¹ãã æååºåå
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121 | ã®æå®
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122 | */
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123 | void
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124 | sys_putc(char c)
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125 | {
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126 | if (c == '\n') {
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127 | vr5500_putc('\r');
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128 | }
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129 | vr5500_putc(c);
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130 | }
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131 |
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