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annotate packages/redboot/current/src/io.c @ 210:d2c90368aeef

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Merge from eCos master repository on 2002-05-23-21:39:14-BST
author jlarmour
date Thu, 23 May 2002 22:59:51 +0000
parents e0c0827131d1
children ee09240e2d36
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1 //==========================================================================
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2 //
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3 // io.c
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4 //
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5 // RedBoot I/O support
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6 //
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7 //==========================================================================
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8 //####ECOSGPLCOPYRIGHTBEGIN####
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9 // -------------------------------------------
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10 // This file is part of eCos, the Embedded Configurable Operating System.
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11 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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12 //
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13 // eCos is free software; you can redistribute it and/or modify it under
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14 // the terms of the GNU General Public License as published by the Free
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15 // Software Foundation; either version 2 or (at your option) any later version.
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16 //
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17 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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18 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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19 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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20 // for more details.
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21 //
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22 // You should have received a copy of the GNU General Public License along
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23 // with eCos; if not, write to the Free Software Foundation, Inc.,
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24 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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25 //
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26 // As a special exception, if other files instantiate templates or use macros
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27 // or inline functions from this file, or you compile this file and link it
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28 // with other works to produce a work based on this file, this file does not
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29 // by itself cause the resulting work to be covered by the GNU General Public
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30 // License. However the source code for this file must still be made available
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31 // in accordance with section (3) of the GNU General Public License.
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32 //
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33 // This exception does not invalidate any other reasons why a work based on
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34 // this file might be covered by the GNU General Public License.
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35 //
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36 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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37 // at http://sources.redhat.com/ecos/ecos-license/
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38 // -------------------------------------------
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39 //####ECOSGPLCOPYRIGHTEND####
115
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40 //==========================================================================
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41 //#####DESCRIPTIONBEGIN####
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42 //
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43 // Author(s): gthomas
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44 // Contributors: gthomas,hmt,jlarmour
115
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45 // Date: 2000-07-14
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46 // Purpose:
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47 // Description:
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48 //
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49 // This code is part of RedBoot (tm).
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50 //
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51 //####DESCRIPTIONEND####
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52 //
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53 //==========================================================================
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54
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55 #include "redboot.h"
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56
162
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57 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
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58 // GDB interface functions
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59 extern void ungetDebugChar(char c);
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60 #endif
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61
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62 static void
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63 do_channel(int argc, char *argv[]);
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64
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65 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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66 RedBoot_cmd("channel",
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67 "Display/switch console channel",
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68 "[-1|<channel number>]",
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69 do_channel
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70 );
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71 #else
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72 RedBoot_cmd("channel",
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73 "Display/switch console channel",
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74 "[<channel number>]",
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75 do_channel
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76 );
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77 #endif
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78
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79 static void
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80 do_channel(int argc, char *argv[])
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81 {
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82 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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83
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84 if (argc == 2) {
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85 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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86 if (strcmp( argv[1], "-1") == 0) {
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87 console_selected = false;
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88 console_echo = true;
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89 } else
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90 #endif
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91 {
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92 unsigned long chan;
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93 if ( !parse_num( argv[1], &chan, NULL, NULL) ) {
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94 diag_printf("** Error: invalid channel '%s'\n", argv[1]);
165
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95 } else {
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96 if (chan < CYGNUM_HAL_VIRTUAL_VECTOR_NUM_CHANNELS) {
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97 CYGACC_CALL_IF_SET_CONSOLE_COMM(chan);
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98 CYGACC_CALL_IF_SET_DEBUG_COMM(chan);
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99 if (chan != cur)
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100 console_echo = true;
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101 }
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102 else {
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103 diag_printf("**Error: bad channel number '%s'\n", argv[1]);
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104 }
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105 }
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106 }
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107 }
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108 /* else display */
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109 else {
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110 diag_printf("Current console channel id: ");
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111 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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112 if (!console_selected)
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113 diag_printf("-1\n");
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114 else
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115 #endif
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116 diag_printf("%d\n", cur);
165
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117 }
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118 }
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119
115
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120 void
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121 mon_write_char(char c)
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122 {
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123 hal_virtual_comm_table_t *__chan;
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124
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125 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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126 if (!console_selected) {
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127 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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128 int i;
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129 // Send output to all channels
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130 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++) {
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131 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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132 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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133 CYGACC_COMM_IF_PUTC(*__chan, c);
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134 }
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135 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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136 } else
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137 #endif
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138 {
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139 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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140 if (__chan)
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141 CYGACC_COMM_IF_PUTC(*__chan, c);
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142 else {
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143 __chan = CYGACC_CALL_IF_DEBUG_PROCS();
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144 CYGACC_COMM_IF_PUTC(*__chan, c);
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145 }
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146 }
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147 }
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148
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149 static void
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150 mon_read_char(char *c)
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151 {
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152 hal_virtual_comm_table_t* __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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153
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154 if (__chan)
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155 *c = CYGACC_COMM_IF_GETC(*__chan);
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156 else {
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157 __chan = CYGACC_CALL_IF_DEBUG_PROCS();
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158 *c = CYGACC_COMM_IF_GETC(*__chan);
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159 }
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160 }
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161
156
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162 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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163 static int _mon_timeout;
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164 #endif
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165
115
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166 static bool
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167 mon_read_char_with_timeout(char *c)
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168 {
156
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169 bool res = false;
115
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170 hal_virtual_comm_table_t *__chan;
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171
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172 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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173 if (!console_selected) {
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174 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
156
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175 int i, tot;
115
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176 // Try input from all channels
156
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177 tot = 0;
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178 while (tot < _mon_timeout) {
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179 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++, tot++) {
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180 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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181 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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182 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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183 if (res) {
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184 // Input available on this channel, make it be the console
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185 if (*c != '\0') {
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186 // Don't chose this unless real data have arrived
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187 console_selected = true;
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188 CYGACC_CALL_IF_SET_DEBUG_COMM(i);
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189 return res;
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190 }
126
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191 }
115
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192 }
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193 }
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194 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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195 } else
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196 #endif
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197 {
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198 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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199 if (__chan)
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200 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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201 else {
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202 __chan = CYGACC_CALL_IF_DEBUG_PROCS();
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203 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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204 }
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205 }
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206 return res;
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207 }
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208
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209 static void
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210 mon_set_read_char_timeout(int ms)
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211 {
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212 hal_virtual_comm_table_t *__chan;
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213
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214 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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215 if (!console_selected) {
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216 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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217 int i;
156
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218 // Set timeout to minimum on each channel; total amounts to desired value
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219 _mon_timeout = ms;
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220 ms = 1;
115
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221 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++) {
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222 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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223 if ((__chan = CYGACC_CALL_IF_CONSOLE_PROCS()) != 0) {
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224 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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225 }
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226 }
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227 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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228 } else
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229 #endif
172
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230 {
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231 if ((__chan = CYGACC_CALL_IF_CONSOLE_PROCS()) != 0) {
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232 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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233 }
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234 if ((__chan = CYGACC_CALL_IF_DEBUG_PROCS()) != 0) {
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235 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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236 }
115
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237 }
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238 }
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239
179
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240 #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT
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241 #define __STRINGIFY(x) #x
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242 #define _STRINGIFY(x) __STRINGIFY(x)
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243 #define _STARTUP_STR _STRINGIFY(CYG_HAL_STARTUP) "}"
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244
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245 //
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246 // Read a character from script.
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247 // Return true if script character found, false if not.
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248 //
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249 static int
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250 getc_script(char *cp)
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251 {
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252 static bool newline = true;
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253 bool skip;
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254
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255 while (script && *script) {
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256 if (newline && *script == '{') {
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257 skip = false;
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258 ++script;
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259
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260 // skip if it isn't for this startup type
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261 if (strncmp(script, _STARTUP_STR, strlen(_STARTUP_STR)))
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262 skip = true;
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263
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264 // skip past "{...}"
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265 while (*script && *script++ != '}')
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266 ;
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267
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268 // skip script line if neccessary
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269 if (skip) {
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270 while (*script && *script++ != '\n')
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271 ;
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272 } else
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273 newline = false;
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274
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275 } else {
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276 *cp = *script++;
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277 if (*cp == '\n')
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278 newline = true;
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279 return true;
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280 }
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281 }
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282 return false;
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283 }
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284 #endif
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285
115
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286 //
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287 // Read a line of input from the user
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288 // Return:
195
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289 // _GETS_OK: 'n' valid characters received
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290 // _GETS_GDB: '$' (GDB lead-in)
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291 // _GETS_TIMEOUT: No input before timeout
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292 // _GETS_CTRLC: ^C typed
115
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293 //
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294 int
195
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295 _rb_gets_preloaded(char *buf, int buflen, int timeout)
115
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296 {
194
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297 char *ip = buf; // Insertion point
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298 char *eol = buf; // End of line
115
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299 char c;
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300 bool res = false;
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301 static char last_ch = '\0';
196
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302 int _timeout;
194
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303 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
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304 //
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305 // Command line history support
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306 // ^P - Select previous line from history
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307 // ^N - Select next line from history
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308 // ^A - Move insertion [cursor] to start of line
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309 // ^E - Move cursor to end of line
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310 // ^B - Move cursor back [previous character]
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311 // ^F - Move cursor forward [next character]
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312 //
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313 #define _CL_NUM_LINES CYGNUM_REDBOOT_CMD_LINE_EDITING // Number of lines to keep
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314 static char _cl_lines[_CL_NUM_LINES][CYGPKG_REDBOOT_MAX_CMD_LINE];
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315 static int _cl_index = -1; // Last known command line
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316 static int _cl_max_index = -1; // Last command in buffers
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317 int _index = _cl_index; // Last saved line
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318 char *xp;
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319 #endif
115
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320
195
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321 // Display current buffer data
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322 while (*eol) {
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323 mon_write_char(*eol++);
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324 }
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325 ip = eol;
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326
115
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327 while (true) {
159
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328 #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT
179
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329 if (getc_script(&c))
156
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330 do_idle(false);
179
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331 else
115
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332 #endif
194
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333 if ((timeout > 0) && (eol == buf)) {
191
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334 #define MIN_TIMEOUT 50
196
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335 _timeout = timeout > MIN_TIMEOUT ? MIN_TIMEOUT : timeout;
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336 mon_set_read_char_timeout(_timeout);
115
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337 while (timeout > 0) {
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338 res = mon_read_char_with_timeout(&c);
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339 if (res) {
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340 // Got a character
156
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341 do_idle(false);
115
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342 break;
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343 }
196
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344 timeout -= _timeout;
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345 }
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346 if (res == false) {
156
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347 do_idle(true);
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348 return _GETS_TIMEOUT; // Input timed out
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349 }
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350 } else {
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351 mon_read_char(&c);
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352 }
194
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353 *eol = '\0';
115
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354 switch (c) {
194
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355 #define CTRL(c) ((c)&0x1F)
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356 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
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357 case CTRL('P'):
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358 // Fetch the previous line into the buffer
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359 if (_index >= 0) {
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360 // Erase the previous line [crude]
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361 while (ip != buf) {
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362 mon_write_char('\b');
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363 mon_write_char(' ');
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364 mon_write_char('\b');
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365 ip--;
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366 }
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367 strcpy(buf, _cl_lines[_index]);
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368 while (*ip) {
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369 mon_write_char(*ip++);
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370 }
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371 eol = ip;
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372 // Move to previous line
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373 _index--;
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374 if (_index < 0) {
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375 _index = _cl_max_index;
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376 }
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377 } else {
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378 mon_write_char(0x07); // Audible bell on most devices
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379 }
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380 break;
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381 case CTRL('N'):
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382 // Fetch the next line into the buffer
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383 if (_index >= 0) {
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384 if (++_index > _cl_max_index) _index = 0;
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385 // Erase the previous line [crude]
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386 while (ip != buf) {
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387 mon_write_char('\b');
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388 mon_write_char(' ');
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389 mon_write_char('\b');
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390 ip--;
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391 }
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392 strcpy(buf, _cl_lines[_index]);
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393 while (*ip) {
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394 mon_write_char(*ip++);
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395 }
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396 eol = ip;
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397 } else {
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398 mon_write_char(0x07); // Audible bell on most devices
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399 }
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400 break;
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401 case CTRL('B'):
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402 // Move insertion point backwards
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403 if (ip != buf) {
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404 mon_write_char('\b');
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405 ip--;
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406 }
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407 break;
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408 case CTRL('F'):
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409 // Move insertion point forwards
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410 if (ip != eol) {
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411 mon_write_char(*ip++);
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412 }
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413 break;
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414 case CTRL('E'):
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415 // Move insertion point to end of line
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416 while (ip != eol) {
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417 mon_write_char(*ip++);
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418 }
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419 break;
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420 case CTRL('A'):
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421 // Move insertion point to beginning of line
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422 if (ip != buf) {
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423 xp = eol;
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424 while (xp-- != buf) {
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425 mon_write_char('\b');
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426 }
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427 }
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parents: 191
diff changeset
428 ip = buf;
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jlarmour
parents: 191
diff changeset
429 break;
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jlarmour
parents: 191
diff changeset
430 case CTRL('K'):
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jlarmour
parents: 191
diff changeset
431 // Kill to the end of line
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jlarmour
parents: 191
diff changeset
432 if (ip != eol) {
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parents: 191
diff changeset
433 xp = ip;
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jlarmour
parents: 191
diff changeset
434 while (xp++ != eol) {
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jlarmour
parents: 191
diff changeset
435 mon_write_char(' ');
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jlarmour
parents: 191
diff changeset
436 }
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jlarmour
parents: 191
diff changeset
437 while (--xp != ip) {
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jlarmour
parents: 191
diff changeset
438 mon_write_char('\b');
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parents: 191
diff changeset
439 }
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parents: 191
diff changeset
440 eol = ip;
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parents: 191
diff changeset
441 }
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parents: 191
diff changeset
442 break;
195
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jlarmour
parents: 194
diff changeset
443 case CTRL('D'):
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jlarmour
parents: 194
diff changeset
444 // Erase the character under the cursor
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jlarmour
parents: 194
diff changeset
445 if (ip != eol) {
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jlarmour
parents: 194
diff changeset
446 xp = ip;
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jlarmour
parents: 194
diff changeset
447 eol--;
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jlarmour
parents: 194
diff changeset
448 while (xp != eol) {
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jlarmour
parents: 194
diff changeset
449 *xp = *(xp+1);
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jlarmour
parents: 194
diff changeset
450 mon_write_char(*xp++);
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jlarmour
parents: 194
diff changeset
451 }
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jlarmour
parents: 194
diff changeset
452 mon_write_char(' '); // Erases last character
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jlarmour
parents: 194
diff changeset
453 mon_write_char('\b');
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jlarmour
parents: 194
diff changeset
454 while (xp-- != ip) {
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jlarmour
parents: 194
diff changeset
455 mon_write_char('\b');
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jlarmour
parents: 194
diff changeset
456 }
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jlarmour
parents: 194
diff changeset
457 }
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jlarmour
parents: 194
diff changeset
458 break;
194
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jlarmour
parents: 191
diff changeset
459 #endif // CYGNUM_REDBOOT_CMD_LINE_EDITING
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jlarmour
parents: 191
diff changeset
460 case CTRL('C'): // ^C
195
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jlarmour
parents: 194
diff changeset
461 // Abort current input
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jlarmour
parents: 194
diff changeset
462 diag_printf("^C\n");
196
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jlarmour
parents: 195
diff changeset
463 *buf = '\0'; // Nothing useful in buffer
195
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parents: 194
diff changeset
464 return _GETS_CTRLC;
115
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jlarmour
parents:
diff changeset
465 case '\n':
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jlarmour
parents:
diff changeset
466 case '\r':
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jlarmour
parents:
diff changeset
467 // If previous character was the "other" end-of-line, ignore this one
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parents:
diff changeset
468 if (((c == '\n') && (last_ch == '\r')) ||
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parents:
diff changeset
469 ((c == '\r') && (last_ch == '\n'))) {
128
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jlarmour
parents: 126
diff changeset
470 c = '\0';
115
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jlarmour
parents:
diff changeset
471 break;
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jlarmour
parents:
diff changeset
472 }
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jlarmour
parents:
diff changeset
473 // End of line
128
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jlarmour
parents: 126
diff changeset
474 if (console_echo) {
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jlarmour
parents: 126
diff changeset
475 mon_write_char('\r');
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parents: 126
diff changeset
476 mon_write_char('\n');
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jlarmour
parents: 126
diff changeset
477 }
115
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jlarmour
parents:
diff changeset
478 last_ch = c;
194
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diff changeset
479 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
195
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jlarmour
parents: 194
diff changeset
480 if (cmd_history) {
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jlarmour
parents: 194
diff changeset
481 // Save current line - only when enabled
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parents: 194
diff changeset
482 if (++_cl_index == _CL_NUM_LINES) _cl_index = 0;
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diff changeset
483 if (_cl_index > _cl_max_index) _cl_max_index = _cl_index;
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parents: 194
diff changeset
484 strcpy(_cl_lines[_cl_index], buf);
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parents: 194
diff changeset
485 }
194
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diff changeset
486 #endif
143
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diff changeset
487 return _GETS_OK;
115
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parents:
diff changeset
488 case '\b':
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jlarmour
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diff changeset
489 case 0x7F: // DEL
194
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diff changeset
490 if (ip != buf) {
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diff changeset
491 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
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parents: 191
diff changeset
492 if (ip != eol) {
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parents: 191
diff changeset
493 ip--;
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diff changeset
494 mon_write_char('\b');
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diff changeset
495 xp = ip;
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diff changeset
496 while (xp != (eol-1)) {
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diff changeset
497 *xp = *(xp+1);
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diff changeset
498 mon_write_char(*xp++);
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diff changeset
499 }
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diff changeset
500 mon_write_char(' '); // Erases last character
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diff changeset
501 mon_write_char('\b');
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jlarmour
parents: 191
diff changeset
502 while (xp-- != ip) {
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jlarmour
parents: 191
diff changeset
503 mon_write_char('\b');
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parents: 191
diff changeset
504 }
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jlarmour
parents: 191
diff changeset
505 } else {
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jlarmour
parents: 191
diff changeset
506 if (console_echo) {
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jlarmour
parents: 191
diff changeset
507 mon_write_char('\b');
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jlarmour
parents: 191
diff changeset
508 mon_write_char(' ');
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jlarmour
parents: 191
diff changeset
509 mon_write_char('\b');
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parents: 191
diff changeset
510 }
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diff changeset
511 ip--;
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diff changeset
512 }
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jlarmour
parents: 191
diff changeset
513 eol--;
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diff changeset
514 #else
128
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jlarmour
parents: 126
diff changeset
515 if (console_echo) {
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jlarmour
parents: 126
diff changeset
516 mon_write_char('\b');
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parents: 126
diff changeset
517 mon_write_char(' ');
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parents: 126
diff changeset
518 mon_write_char('\b');
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jlarmour
parents: 126
diff changeset
519 }
194
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parents: 191
diff changeset
520 ip--;
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diff changeset
521 eol--;
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diff changeset
522 #endif
115
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parents:
diff changeset
523 }
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jlarmour
parents:
diff changeset
524 break;
182
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jlarmour
parents: 179
diff changeset
525 #ifdef CYGDBG_HAL_DEBUG_GDB_INCLUDE_STUBS
178
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diff changeset
526 case '+': // fall through
115
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jlarmour
parents:
diff changeset
527 case '$':
194
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diff changeset
528 if (ip == buf || last_ch != '\\')
177
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parents: 172
diff changeset
529 {
115
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jlarmour
parents:
diff changeset
530 // Give up and try GDB protocol
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jlarmour
parents:
diff changeset
531 ungetDebugChar(c); // Push back character so stubs will see it
143
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parents: 128
diff changeset
532 return _GETS_GDB;
115
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jlarmour
parents:
diff changeset
533 }
191
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parents: 182
diff changeset
534 if (last_ch == '\\') {
194
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parents: 191
diff changeset
535 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
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parents: 191
diff changeset
536 if (ip == eol) {
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jlarmour
parents: 191
diff changeset
537 // Just save \$ as $
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jlarmour
parents: 191
diff changeset
538 eol = --ip;
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jlarmour
parents: 191
diff changeset
539 } else {
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jlarmour
parents: 191
diff changeset
540 mon_write_char('\b');
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jlarmour
parents: 191
diff changeset
541 *--ip = c;
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jlarmour
parents: 191
diff changeset
542 mon_write_char(c);
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jlarmour
parents: 191
diff changeset
543 break;
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jlarmour
parents: 191
diff changeset
544 }
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jlarmour
parents: 191
diff changeset
545 #else
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jlarmour
parents: 191
diff changeset
546 ip--; // Save \$ as $
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jlarmour
parents: 191
diff changeset
547 #endif
191
678094f34118 Merge from eCos master repository on 2001-10-19-06:43:02-BST
jlarmour
parents: 182
diff changeset
548 }
178
aa8364213009 Merge from eCos master repository on 2001-08-15-01:50:29-BST
jlarmour
parents: 177
diff changeset
549 // else fall through
162
2395031e7a66 Merge from eCos master repository on 2001-06-15-06:43:03-BST
jlarmour
parents: 161
diff changeset
550 #endif
115
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jlarmour
parents:
diff changeset
551 default:
194
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jlarmour
parents: 191
diff changeset
552 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
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parents: 191
diff changeset
553 // If the insertion point is not at the end of line, make space for it
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jlarmour
parents: 191
diff changeset
554 if (ip != eol) {
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jlarmour
parents: 191
diff changeset
555 xp = eol;
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jlarmour
parents: 191
diff changeset
556 *++eol = '\0';
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jlarmour
parents: 191
diff changeset
557 while (xp != ip) {
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jlarmour
parents: 191
diff changeset
558 *xp = *(xp-1);
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jlarmour
parents: 191
diff changeset
559 xp--;
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jlarmour
parents: 191
diff changeset
560 }
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jlarmour
parents: 191
diff changeset
561 }
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jlarmour
parents: 191
diff changeset
562 #endif
128
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jlarmour
parents: 126
diff changeset
563 if (console_echo) {
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jlarmour
parents: 126
diff changeset
564 mon_write_char(c);
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jlarmour
parents: 126
diff changeset
565 }
194
feb0fcf83327 Merge from eCos master repository on 2001-10-26-06:43:03-BST
jlarmour
parents: 191
diff changeset
566 if (ip == eol) {
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jlarmour
parents: 191
diff changeset
567 // Advance both pointers
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jlarmour
parents: 191
diff changeset
568 *ip++ = c;
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jlarmour
parents: 191
diff changeset
569 eol = ip;
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jlarmour
parents: 191
diff changeset
570 #if CYGNUM_REDBOOT_CMD_LINE_EDITING != 0
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jlarmour
parents: 191
diff changeset
571 } else {
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parents: 191
diff changeset
572 // Just insert the character
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jlarmour
parents: 191
diff changeset
573 *ip++ = c;
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574 xp = ip;
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575 while (xp != eol) {
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576 mon_write_char(*xp++);
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577 }
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578 while (xp-- != ip) {
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579 mon_write_char('\b');
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580 }
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581 #endif
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582 }
115
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583 }
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584 last_ch = c;
194
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585 if (ip == buf + buflen) // Buffer full
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586 return buflen;
115
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587 }
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588 }
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589
195
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590 int
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591 _rb_gets(char *buf, int buflen, int timeout)
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592 {
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593 *buf = '\0'; // Empty buffer
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594 return _rb_gets_preloaded(buf, buflen, timeout);
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595 }
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596
208
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597 static bool
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598 _verify_action(int timeout, char *fmt, va_list ap)
115
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599 {
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600 char ans[8];
208
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601 int ret;
159
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602 #ifdef CYGFUN_REDBOOT_BOOT_SCRIPT
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603 // Don't ask if we're executing a script
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604 if (script && *script)
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605 return 1;
115
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606 #endif
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607
208
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608 diag_vprintf(fmt, ap);
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609 diag_printf(" - continue (y/n)? ");
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610 if ((ret = _rb_gets(ans, sizeof(ans), timeout)) > 0) {
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611 return ((ans[0] == 'y') || (ans[0] == 'Y'));
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612 } else {
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613 if (ret == _GETS_TIMEOUT) {
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614 diag_printf(" ** Timed out!\n");
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615 }
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616 return 0; // Timed out or ^C
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617 }
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618 }
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619
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620 bool
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621 verify_action(char *fmt, ...)
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622 {
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623 va_list ap;
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624
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625 va_start(ap, fmt);
208
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626 return _verify_action(0, fmt, ap);
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627 }
208
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628
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629 bool
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630 verify_action_with_timeout(int timeout, char *fmt, ...)
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631 {
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632 va_list ap;
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633
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634 va_start(ap, fmt);
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635 return _verify_action(timeout, fmt, ap);
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636 }