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annotate packages/redboot/current/src/io.c @ 156:b939e9cada46

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Merge from eCos master repository on 2001-03-29-21:44:39-BST
author jlarmour
date Fri, 06 Apr 2001 17:20:13 +0000
parents 52c99470ec11
children f2545e5de153
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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, 2001 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 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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94 static int _mon_timeout;
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95 #endif
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96
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97 static bool
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98 mon_read_char_with_timeout(char *c)
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99 {
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100 bool res = false;
115
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101 hal_virtual_comm_table_t *__chan;
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102
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103 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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104 if (!console_selected) {
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105 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
156
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106 int i, tot;
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107 // Try input from all channels
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108 tot = 0;
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109 while (tot < _mon_timeout) {
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110 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++, tot++) {
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111 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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112 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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113 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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114 if (res) {
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115 // Input available on this channel, make it be the console
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116 if (*c != '\0') {
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117 // Don't chose this unless real data have arrived
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118 console_selected = true;
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119 CYGACC_CALL_IF_SET_DEBUG_COMM(i);
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120 return res;
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121 }
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122 }
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123 }
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124 }
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125 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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126 } else
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127 #endif
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128 {
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129 __chan = CYGACC_CALL_IF_CONSOLE_PROCS();
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130 if (__chan)
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131 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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132 else {
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133 __chan = CYGACC_CALL_IF_DEBUG_PROCS();
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134 res = CYGACC_COMM_IF_GETC_TIMEOUT(*__chan, c);
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135 }
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136 }
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137 return res;
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138 }
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139
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140 static void
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141 mon_set_read_char_timeout(int ms)
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142 {
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143 hal_virtual_comm_table_t *__chan;
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144
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145 #ifdef CYGPKG_REDBOOT_ANY_CONSOLE
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146 if (!console_selected) {
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147 int cur = CYGACC_CALL_IF_SET_CONSOLE_COMM(CYGNUM_CALL_IF_SET_COMM_ID_QUERY_CURRENT);
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148 int i;
156
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149 // Set timeout to minimum on each channel; total amounts to desired value
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150 _mon_timeout = ms;
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151 ms = 1;
115
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152 for (i = 0; i < CYGNUM_HAL_VIRTUAL_VECTOR_COMM_CHANNELS; i++) {
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153 CYGACC_CALL_IF_SET_CONSOLE_COMM(i);
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154 if ((__chan = CYGACC_CALL_IF_CONSOLE_PROCS()) != 0) {
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155 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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156 }
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157 }
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158 CYGACC_CALL_IF_SET_CONSOLE_COMM(cur);
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159 } else
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160 #endif
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161 if ((__chan = CYGACC_CALL_IF_CONSOLE_PROCS()) != 0) {
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162 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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163 }
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164 if ((__chan = CYGACC_CALL_IF_DEBUG_PROCS()) != 0) {
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165 CYGACC_COMM_IF_CONTROL(*__chan, __COMMCTL_SET_TIMEOUT, ms);
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166 }
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167 }
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168
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169 //
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170 // Read a line of input from the user
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171 // Return:
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172 // n: 'n' valid characters received
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173 // 0: '$' (GDB lead-in)
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174 // -1: No input before timeout
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175 // -2: ^C typed
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176 //
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177 int
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178 gets(char *buf, int buflen, int timeout)
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179 {
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180 char *ptr = buf;
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181 char c;
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182 bool res = false;
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183 static char last_ch = '\0';
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184
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185 while (true) {
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186 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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187 if (script && *script) {
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188 c = *script++;
156
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189 do_idle(false);
115
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190 } else
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191 #endif
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192 if ((timeout > 0) && (ptr == buf)) {
147
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193 mon_set_read_char_timeout(timeout);
115
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194 while (timeout > 0) {
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195 res = mon_read_char_with_timeout(&c);
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196 if (res) {
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197 // Got a character
156
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198 do_idle(false);
115
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199 break;
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200 }
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201 timeout -= 50;
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202 }
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203 if (res == false) {
156
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204 do_idle(true);
143
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205 return _GETS_TIMEOUT; // Input timed out
115
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206 }
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207 } else {
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208 mon_read_char(&c);
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209 }
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210 *ptr = '\0';
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211 switch (c) {
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212 case 0x03: // ^C
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213 if (ptr == buf) {
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214 printf("^C\n");
143
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215 return _GETS_CTRLC;
115
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216 }
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217 *ptr++ = c;
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218 break;
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219 case '\n':
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220 case '\r':
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221 // If previous character was the "other" end-of-line, ignore this one
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222 if (((c == '\n') && (last_ch == '\r')) ||
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223 ((c == '\r') && (last_ch == '\n'))) {
128
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224 c = '\0';
115
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225 break;
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226 }
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227 // End of line
128
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228 if (console_echo) {
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229 mon_write_char('\r');
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230 mon_write_char('\n');
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231 }
115
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232 last_ch = c;
143
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233 return _GETS_OK;
115
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234 case '\b':
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235 case 0x7F: // DEL
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236 if (ptr != buf) {
128
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237 if (console_echo) {
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238 mon_write_char('\b');
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239 mon_write_char(' ');
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240 mon_write_char('\b');
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241 }
115
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242 ptr--;
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243 }
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244 break;
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245 case '+':
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246 case '$':
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247 if (ptr == buf) {
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248 // Give up and try GDB protocol
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249 ungetDebugChar(c); // Push back character so stubs will see it
143
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250 return _GETS_GDB;
115
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251 }
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252 // Fall through - accept '$' at other than start of line
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253 default:
128
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254 if (console_echo) {
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255 mon_write_char(c);
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256 }
115
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257 *ptr++ = c;
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258 }
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259 last_ch = c;
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260 }
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261 }
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262
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263 void
149
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264 vdump_buf_with_offset(_printf_fun *pf, void *_p, CYG_ADDRWORD s, void *_base)
115
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265 {
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266 int i, c;
143
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267 cyg_uint8 *p = (cyg_uint8 *)_p;
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268 cyg_uint8 *base = (cyg_uint8 *)_base;
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269
115
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270 if ((CYG_ADDRWORD)s > (CYG_ADDRWORD)p) {
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271 s = (CYG_ADDRWORD)s - (CYG_ADDRWORD)p;
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272 }
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273 while ((int)s > 0) {
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274 if (base) {
149
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275 (*pf)("0x%08X: ", (CYG_ADDRWORD)p - (CYG_ADDRWORD)base);
115
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276 } else {
149
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277 (*pf)("0x%08X: ", (CYG_ADDRWORD)p);
115
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278 }
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279 for (i = 0; i < 16; i++) {
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280 if (i < (int)s) {
149
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281 (*pf)("%02X", p[i] & 0xFF);
115
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282 } else {
149
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283 (*pf)(" ");
115
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284 }
149
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285 if ((i % 2) == 1) (*pf)(" ");
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286 if ((i % 8) == 7) (*pf)(" ");
115
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287 }
149
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288 (*pf)(" |");
115
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289 for (i = 0; i < 16; i++) {
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290 if (i < (int)s) {
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291 c = p[i] & 0xFF;
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292 if ((c < 0x20) || (c >= 0x7F)) c = '.';
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293 } else {
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294 c = ' ';
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295 }
149
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296 (*pf)("%c", c);
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297 }
149
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298 (*pf)("|\n");
115
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299 s -= 16;
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300 p += 16;
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301 }
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302 }
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303
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304 void
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305 dump_buf_with_offset(void *p, CYG_ADDRWORD s, void *base)
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306 {
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307 vdump_buf_with_offset(printf, p, s, base);
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308 }
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309
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310 void
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311 dump_buf(void *p, CYG_ADDRWORD s)
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312 {
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313 dump_buf_with_offset((cyg_uint8 *)p, s, 0);
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314 }
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315
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316 bool
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317 verify_action(char *fmt, ...)
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318 {
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319 va_list ap;
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320 char ans[8];
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321 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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322 unsigned char *hold_script = script;
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323 #endif
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324
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325 va_start(ap, fmt);
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326 vprintf(fmt, ap);
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327 printf(" - are you sure (y/n)? ");
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328 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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329 script = (unsigned char *)0;
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330 #endif
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331 gets(ans, sizeof(ans), 0);
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332 #ifdef CYGSEM_REDBOOT_FLASH_CONFIG
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333 script = hold_script;
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334 #endif
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335 return ((ans[0] == 'y') || (ans[0] == 'Y'));
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336 }