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| Rev | Author | Line No. | Line |
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| 4043 | jermar | 1 | /* |
| 2 | * Copyright (c) 2009 Jakub Jermar |
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| 3 | * All rights reserved. |
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| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 4092 | decky | 29 | /** @addtogroup genarch |
| 4043 | jermar | 30 | * @{ |
| 31 | */ |
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| 32 | /** |
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| 33 | * @file |
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| 4092 | decky | 34 | * @brief Serial line processing. |
| 4043 | jermar | 35 | */ |
| 36 | |||
| 37 | #include <genarch/srln/srln.h> |
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| 38 | #include <console/chardev.h> |
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| 39 | #include <console/console.h> |
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| 40 | #include <proc/thread.h> |
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| 41 | #include <arch.h> |
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| 4223 | decky | 42 | #include <string.h> |
| 4043 | jermar | 43 | |
| 4092 | decky | 44 | static indev_t srlnout; |
| 4043 | jermar | 45 | |
| 4092 | decky | 46 | indev_operations_t srlnout_ops = { |
| 47 | .poll = NULL |
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| 4043 | jermar | 48 | }; |
| 49 | |||
| 50 | static void ksrln(void *arg) |
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| 51 | { |
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| 4092 | decky | 52 | indev_t *in = (indev_t *) arg; |
| 53 | bool cr = false; |
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| 4223 | decky | 54 | uint32_t escape = 0; |
| 4092 | decky | 55 | |
| 56 | while (true) { |
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| 4223 | decky | 57 | wchar_t ch = _getc(in); |
| 4043 | jermar | 58 | |
| 4223 | decky | 59 | /* ANSI escape sequence processing */ |
| 60 | if (escape != 0) { |
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| 61 | escape <<= 8; |
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| 62 | escape |= ch & 0xff; |
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| 63 | |||
| 64 | if ((escape == 0x1b4f) || (escape == 0x1b5b) || (escape == 0x1b5b33)) |
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| 65 | continue; |
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| 66 | |||
| 67 | switch (escape) { |
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| 68 | case 0x1b4f46: |
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| 69 | case 0x1b5b46: |
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| 70 | ch = U_END_ARROW; |
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| 71 | escape = 0; |
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| 72 | break; |
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| 73 | case 0x1b4f48: |
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| 74 | case 0x1b5b48: |
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| 75 | ch = U_HOME_ARROW; |
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| 76 | escape = 0; |
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| 77 | break; |
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| 78 | case 0x1b5b41: |
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| 79 | ch = U_UP_ARROW; |
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| 80 | escape = 0; |
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| 81 | break; |
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| 82 | case 0x1b5b42: |
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| 83 | ch = U_DOWN_ARROW; |
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| 84 | escape = 0; |
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| 85 | break; |
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| 86 | case 0x1b5b43: |
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| 87 | ch = U_RIGHT_ARROW; |
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| 88 | escape = 0; |
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| 89 | break; |
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| 90 | case 0x1b5b44: |
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| 91 | ch = U_LEFT_ARROW; |
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| 92 | escape = 0; |
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| 93 | break; |
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| 94 | case 0x1b5b337e: |
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| 95 | ch = U_DELETE; |
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| 96 | escape = 0; |
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| 97 | break; |
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| 98 | default: |
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| 99 | escape = 0; |
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| 100 | } |
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| 101 | } |
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| 102 | |||
| 103 | if (ch == 0x1b) { |
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| 104 | escape = ch & 0xff; |
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| 105 | continue; |
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| 106 | } |
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| 107 | |||
| 108 | /* Replace carriage return with line feed |
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| 109 | and suppress any following line feed */ |
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| 4092 | decky | 110 | if ((ch == '\n') && (cr)) { |
| 111 | cr = false; |
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| 4043 | jermar | 112 | continue; |
| 4092 | decky | 113 | } |
| 4043 | jermar | 114 | |
| 4092 | decky | 115 | if (ch == '\r') { |
| 116 | ch = '\n'; |
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| 117 | cr = true; |
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| 118 | } else |
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| 119 | cr = false; |
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| 120 | |||
| 4223 | decky | 121 | /* Backspace */ |
| 4092 | decky | 122 | if (ch == 0x7f) |
| 123 | ch = '\b'; |
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| 124 | |||
| 125 | indev_push_character(stdin, ch); |
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| 4043 | jermar | 126 | } |
| 127 | } |
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| 128 | |||
| 4092 | decky | 129 | void srln_init(indev_t *devin) |
| 4043 | jermar | 130 | { |
| 4092 | decky | 131 | indev_initialize("srln", &srlnout, &srlnout_ops); |
| 132 | thread_t *thread |
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| 133 | = thread_create(ksrln, devin, TASK, 0, "ksrln", false); |
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| 4043 | jermar | 134 | |
| 4092 | decky | 135 | if (thread) { |
| 136 | stdin = &srlnout; |
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| 137 | thread_ready(thread); |
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| 138 | } |
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| 4043 | jermar | 139 | } |
| 140 | |||
| 141 | /** @} |
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| 4052 | jermar | 142 | */ |