[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 | * Additional routine
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| 7 | *
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| 8 | * Copyright (C) 2003 by SEIKO EPSON Corp, JAPAN
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| 9 | *
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| 10 | * ä¸è¨èä½æ¨©è
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| 11 | ã¯ï¼Free Software Foundation ã«ãã£ã¦å
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| 12 | ¬è¡¨ããã¦ãã
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| 13 | * GNU General Public License ã® Version 2 ã«è¨è¿°ããã¦ããæ¡ä»¶ãï¼ä»¥
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| 14 | * ä¸ã®(1)ã(4)ã®æ¡ä»¶ãæºããå ´åã«éãï¼æ¬ã½ããã¦ã§ã¢ï¼æ¬ã½ããã¦ã§
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| 15 | * ã¢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¢ãåå©ç¨å¯è½ãªãã¤ããªã³ã¼ãï¼ãªãã±ã¼ã¿ãã«ãªã
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| 22 | * ã¸ã§ã¯ããã¡ã¤ã«ãã©ã¤ãã©ãªãªã©ï¼ã®å½¢ã§å©ç¨ããå ´åã«ã¯ï¼å©ç¨
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| 23 | * ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 24 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½æ¨©è¡¨ç¤ºï¼
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| 25 | * ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 26 | * (3) æ¬ã½ããã¦ã§ã¢ãåå©ç¨ä¸å¯è½ãªãã¤ããªã³ã¼ãã®å½¢ã¾ãã¯æ©å¨ã«çµ
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| 27 | * ã¿è¾¼ãã å½¢ã§å©ç¨ããå ´åã«ã¯ï¼æ¬¡ã®ããããã®æ¡ä»¶ãæºãããã¨ï¼
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| 28 | * (a) å©ç¨ã«ä¼´ãããã¥ã¡ã³ãï¼å©ç¨è
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| 29 | ããã¥ã¢ã«ãªã©ï¼ã«ï¼ä¸è¨ã®èä½
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| 30 | * 権表示ï¼ãã®å©ç¨æ¡ä»¶ããã³ä¸è¨ã®ç¡ä¿è¨¼è¦å®ãæ²è¼ãããã¨ï¼
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| 31 | * (b) å©ç¨ã®å½¢æ
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| 32 | ãï¼å¥ã«å®ããæ¹æ³ã«ãã£ã¦ï¼ä¸è¨èä½æ¨©è
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| 33 | ã«å ±åãã
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| 34 | * ãã¨ï¼
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| 35 | * (4) æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çãããããªãæ
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| 36 | * 害ãããï¼ä¸è¨èä½æ¨©è
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| 37 | ãå
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| 38 | 責ãããã¨ï¼
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| 39 | *
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| 40 | * æ¬ã½ããã¦ã§ã¢ã¯ï¼ç¡ä¿è¨¼ã§æä¾ããã¦ãããã®ã§ããï¼ä¸è¨èä½æ¨©è
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| 41 | ã¯ï¼
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| 42 | * æ¬ã½ããã¦ã§ã¢ã«é¢ãã¦ï¼ãã®é©ç¨å¯è½æ§ãå«ãã¦ï¼ãããªãä¿è¨¼ãè¡ã
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| 43 | * ãªãï¼ã¾ãï¼æ¬ã½ããã¦ã§ã¢ã®å©ç¨ã«ããç´æ¥çã¾ãã¯éæ¥çã«çããã
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| 44 | * ããªãæ害ã«é¢ãã¦ãï¼ãã®è²¬ä»»ãè² ããªãï¼
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| 45 | *
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| 46 | */
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| 47 |
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| 48 | #include "cpu_rename.h"
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| 49 |
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| 50 | unsigned char WRITE_BUF[65];
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| 51 |
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| 52 | /* buffer for simulated stdin, WRITE_BUF[0] is size (1-0x40, 0 means no data)
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| 53 | WRITE_BUF[1-64] is buffer area for data, max 64 bytes
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| 54 | used in write () */
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| 55 |
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| 56 | unsigned char READ_BUF[65];
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| 57 |
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| 58 | /* buffer for simulated stdin, READ_BUF[0] is size (1-0x40, 0 means EOF)
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| 59 | READ_BUF[1-64] is buffer area for data, max 64 bytes
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| 60 | used in read() */
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| 61 |
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| 62 | static unsigned char READ_EOF; /* if 1: READ_BUFFER become EOF, 0: not EOF */
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| 63 |
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| 64 | /*
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| 65 | * void _exit
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| 66 | * _exit execute inifinity loop.
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| 67 | */
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| 68 |
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| 69 | void _exit()
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| 70 | {
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| 71 | LOOP:
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| 72 | goto LOOP;
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| 73 | }
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| 74 |
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| 75 | /*
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| 76 | * void _init_sys
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| 77 | * _init_sys initialize read() and write() bffer area
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| 78 | */
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| 79 |
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| 80 | void init_sys()
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| 81 | {
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| 82 | READ_EOF = 0; /* not EOF */
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| 83 | READ_BUF[0] = 0; /* BUFFER is empty */
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| 84 | }
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| 85 |
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| 86 | /*
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| 87 | * read
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| 88 | * Read() get and return required bytes with using simulated input.
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| 89 | * If EOF return 0.
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| 90 | * READ_FLASH: is break point label for stdin
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| 91 | * READ_BUF is buffer area for stdin
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| 92 | */
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| 93 |
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| 94 | int read (int fhDummy, char *psReadBuf, int iReadBytes)
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| 95 | {
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| 96 | int iBytes; /* data size written to psReadBuf */
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| 97 | int iSize; /* data size in READ_BUF */
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| 98 | char *psBuf; /* top of read buffer */
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| 99 | static int iNdxPos; /* current positon in READ_BUF*/
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| 100 |
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| 101 | /* start */
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| 102 |
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| 103 | iBytes = 0; /* no read now */
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| 104 | psBuf = psReadBuf;
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| 105 |
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| 106 | /* This loop repeat for each byte to copy READ_BUF to psReadBuf */
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| 107 |
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| 108 | for (;;)
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| 109 | {
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| 110 |
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| 111 | /* if iReadByte become 0, return */
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| 112 |
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| 113 | if (iReadBytes == 0) /* if required size become 0, return */
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| 114 | return(iBytes);
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| 115 |
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| 116 | /* if EOF, return 0 */
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| 117 |
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| 118 | if (READ_EOF == 1)
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| 119 | return(iBytes);
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| 120 |
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| 121 | /* if there is data, copy 1 byte */
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| 122 |
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| 123 | iSize = READ_BUF[0];
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| 124 | if (iSize > 0 )
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| 125 | {
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| 126 | *psBuf = READ_BUF[iNdxPos];
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| 127 | psBuf++;
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| 128 | iReadBytes--;
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| 129 | iNdxPos++;
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| 130 | iSize--;
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| 131 | iBytes++;
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| 132 | READ_BUF[0] = (unsigned char)(iSize & 0xff);
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| 133 | }
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| 134 |
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| 135 | /* if no data, read 0-64 bytes from simulated input */
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| 136 |
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| 137 | else
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| 138 | {
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| 139 | asm(".global READ_FLASH");
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| 140 | asm("READ_FLASH:"); /* label for simulated stdin */
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| 141 | if (READ_BUF[0] == 0)
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| 142 | READ_EOF = 1; /* if size is 0, EOF */
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| 143 | iNdxPos = 1; /* reset index position */
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| 144 | }
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| 145 | } /* back to for (;;) */
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| 146 | }
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| 147 |
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| 148 | /*
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| 149 | * write
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| 150 | * write datas with using simulated stdout
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| 151 | * WRITE_FLASH: is break point label for stdout
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| 152 | * WRITE_BUF is buffer area for stdout
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| 153 | */
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| 154 |
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| 155 | int write (int fhDummy, char *psWriBuf, int iWriBytes)
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| 156 | {
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| 157 | int iBytes; /* remain data bytes waiting WRITE_BUF */
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| 158 | int iSize; /* data size to write to WRITE_BUF */
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| 159 | int iCount; /* counter to copy data to WRITE_BUF */
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| 160 |
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| 161 | iBytes = iWriBytes;
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| 162 |
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| 163 | for (;;){ /* repeat each 255 bytes */
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| 164 |
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| 165 | /* if remain 0, return original size */
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| 166 |
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| 167 | if (iBytes == 0) /* remain size become 0, so return */
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| 168 | return(iWriBytes);
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| 169 |
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| 170 | /* if remain > 64, write size is 64 */
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| 171 |
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| 172 | if (iBytes > 64)
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| 173 | { /* over 64 */
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| 174 | iSize = 64; /* 64 bytes to WRITE_BUF */
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| 175 | iBytes = iBytes - 64; /* remain data */
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| 176 | }
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| 177 | else
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| 178 | { /* not over 64 */
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| 179 | iSize = iBytes; /* under 64 bytes to WRITE_BUF */
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| 180 | iBytes = 0; /* no remain data */
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| 181 | }
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| 182 |
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| 183 | /* copy psWriBuf to WRITE_BUF */
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| 184 |
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| 185 | WRITE_BUF[0] = (unsigned char)(iSize & 0xff); /* set size */
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| 186 | for (iCount = 1 ; iCount <= iSize ; iCount++)
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| 187 | {
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| 188 | WRITE_BUF[iCount] = *psWriBuf; /* copy data */
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| 189 | psWriBuf++;
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| 190 | }
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| 191 | asm(".global WRITE_FLASH");
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| 192 | asm("WRITE_FLASH:"); /* label for simulated stdout */
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| 193 |
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| 194 | } /* back to for (;;) */
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| 195 |
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| 196 | return(iSize);
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| 197 | }
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| 198 |
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