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annotate packages/redboot/current/src/io.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
parents
children 518f42066aba
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115
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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 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 2000-07-14
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37 // Purpose:
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38 // Description:
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39 //
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40 // This code is part of RedBoot (tm).
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41 //
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42 //####DESCRIPTIONEND####
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43 //
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44 //==========================================================================
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45
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46 #include "redboot.h"
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47
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48 // GDB interface functions
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49 extern void ungetDebugChar(char c);
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50
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51 void
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52 mon_write_char(char c)
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53 {
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54 hal_virtual_comm_table_t *__chan;
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55
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56 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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57 if (!console_selected) {
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58 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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59 int i;
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60 // Send output to all channels
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61 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++) {
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62 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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63 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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64 CYGACC_COMM_IF_PUTC(*__chan, c);
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65 }
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66 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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67 } else
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68 #endif
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69 {
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70 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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71 if (__chan)
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72 CYGACC_COMM_IF_PUTC(*__chan, c);
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73 else {
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74 __chan = CYGACC_CALL_IF_DEBUG_PROCS();
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75 CYGACC_COMM_IF_PUTC(*__chan, c);
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76 }
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77 }
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78 }
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79
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80 static void
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81 mon_read_char(char *c)
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82 {
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83 hal_virtual_comm_table_t* __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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84
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85 if (__chan)
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86 *c = CYGACC_COMM_IF_GETC(*__chan);
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87 else {
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88 __chan = CYGACC_CALL_IF_DEBUG_PROCS();
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89 *c = CYGACC_COMM_IF_GETC(*__chan);
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90 }
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91 }
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92
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93 static bool
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94 mon_read_char_with_timeout(char *c)
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95 {
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96 bool res;
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97 hal_virtual_comm_table_t *__chan;
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98
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99 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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100 if (!console_selected) {
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101 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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102 int i;
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103 // Try input from all channels
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104 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++) {
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105 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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106 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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107 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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108 if (res) {
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109 // Input available on this channel, make it be the console
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110 console_selected = true;
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111 CYGACC_CALL_IF_SET_DEBUG_COMM(i);
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112 return res;
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113 }
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114 }
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115 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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116 } else
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117 #endif
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118 {
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119 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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120 if (__chan)
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121 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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122 else {
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123 __chan = CYGACC_CALL_IF_DEBUG_PROCS();
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124 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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125 }
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126 }
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127 return res;
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128 }
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129
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130 static void
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131 mon_set_read_char_timeout(int ms)
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132 {
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133 hal_virtual_comm_table_t *__chan;
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134
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135 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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136 if (!console_selected) {
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137 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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138 int i;
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139 // Set timeout on each channel so total amounts to desired value
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140 ms = ms / CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS;
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141 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++) {
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142 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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143 if ((__chan = CYGACC_CALL_IF_CONSOLE_PROCS()) != 0) {
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144 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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145 }
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146 }
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147 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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148 } else
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149 #endif
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150 if ((__chan = CYGACC_CALL_IF_CONSOLE_PROCS()) != 0) {
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151 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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152 }
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153 if ((__chan = CYGACC_CALL_IF_DEBUG_PROCS()) != 0) {
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154 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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155 }
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156 }
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157
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158 //
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159 // Read a line of input from the user
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160 // Return:
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161 // n: 'n' valid characters received
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162 // 0: '$' (GDB lead-in)
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163 // -1: No input before timeout
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164 // -2: ^C typed
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165 //
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166 int
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167 gets(char *buf, int buflen, int timeout)
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168 {
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169 char *ptr = buf;
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170 char c;
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171 bool res = false;
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172 static char last_ch = '\0';
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173
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174 while (true) {
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175 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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176 if (script && *script) {
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177 c = *script++;
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178 } else
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179 #endif
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180 if ((timeout > 0) && (ptr == buf)) {
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181 mon_set_read_char_timeout(50);
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182 while (timeout > 0) {
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183 res = mon_read_char_with_timeout(&c);
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184 if (res) {
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185 // Got a character
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186 break;
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187 }
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188 timeout -= 50;
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189 }
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190 if (res == false) {
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191 return -1; // Input timed out
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192 }
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193 } else {
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194 mon_read_char(&c);
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195 }
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196 *ptr = '\0';
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197 switch (c) {
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198 case 0x03: // ^C
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199 if (ptr == buf) {
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200 printf("^C\n");
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201 return -2;
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202 }
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203 *ptr++ = c;
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204 break;
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205 case '\n':
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206 case '\r':
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207 // If previous character was the "other" end-of-line, ignore this one
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208 if (((c == '\n') && (last_ch == '\r')) ||
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209 ((c == '\r') && (last_ch == '\n'))) {
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210 break;
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211 }
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212 // End of line
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213 mon_write_char('\r');
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214 mon_write_char('\n');
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215 last_ch = c;
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216 return 1;
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217 case '\b':
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218 case 0x7F: // DEL
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219 if (ptr != buf) {
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220 mon_write_char('\b');
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221 mon_write_char(' ');
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222 mon_write_char('\b');
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223 ptr--;
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224 }
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225 break;
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226 case '+':
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227 case '$':
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228 if (ptr == buf) {
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229 // Give up and try GDB protocol
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230 ungetDebugChar(c); // Push back character so stubs will see it
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231 return 0;
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232 }
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233 // Fall through - accept '$' at other than start of line
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234 default:
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235 mon_write_char(c);
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236 *ptr++ = c;
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237 }
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238 last_ch = c;
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239 }
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240 }
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241
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242 void
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243 dump_buf_with_offset(cyg_uint8 *p,
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244 CYG_ADDRWORD s,
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245 cyg_uint8 *base)
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246 {
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247 int i, c;
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248 if ((CYG_ADDRWORD)s > (CYG_ADDRWORD)p) {
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249 s = (CYG_ADDRWORD)s - (CYG_ADDRWORD)p;
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250 }
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251 while ((int)s > 0) {
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252 if (base) {
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253 printf("0x%08X: ", (CYG_ADDRWORD)p - (CYG_ADDRWORD)base);
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254 } else {
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255 printf("0x%08X: ", (CYG_ADDRWORD)p);
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256 }
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257 for (i = 0; i < 16; i++) {
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258 if (i < (int)s) {
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259 printf("%02X", p[i] & 0xFF);
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260 } else {
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261 printf(" ");
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262 }
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263 if ((i % 2) == 1) printf(" ");
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264 if ((i % 8) == 7) printf(" ");
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265 }
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266 printf(" |");
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267 for (i = 0; i < 16; i++) {
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268 if (i < (int)s) {
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269 c = p[i] & 0xFF;
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270 if ((c < 0x20) || (c >= 0x7F)) c = '.';
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271 } else {
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272 c = ' ';
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273 }
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274 printf("%c", c);
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275 }
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276 printf("|\n");
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277 s -= 16;
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278 p += 16;
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279 }
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280 }
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281
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282 void
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283 dump_buf(void *p, CYG_ADDRWORD s)
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284 {
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285 dump_buf_with_offset((cyg_uint8 *)p, s, 0);
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286 }
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287
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288 bool
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289 verify_action(char *fmt, ...)
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290 {
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291 va_list ap;
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292 char ans[8];
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293 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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294 unsigned char *hold_script = script;
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295 #endif
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296
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297 va_start(ap, fmt);
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298 vprintf(fmt, ap);
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299 printf(" - are you sure (y/n)? ");
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300 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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301 script = (unsigned char *)0;
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302 #endif
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303 gets(ans, sizeof(ans), 0);
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304 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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305 script = hold_script;
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306 #endif
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307 return ((ans[0] == 'y') || (ans[0] == 'Y'));
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308 }