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annotate lwlink/main.c @ 0:2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
author | lost@l-w.ca |
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date | Wed, 19 Jan 2011 22:27:17 -0700 |
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children | 7317fbe024af |
rev | line source |
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0
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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1 /* |
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2 main.c |
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3 Copyright © 2009 William Astle |
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4 |
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5 This file is part of LWLINK. |
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6 |
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7 LWLINK is free software: you can redistribute it and/or modify it under the |
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8 terms of the GNU General Public License as published by the Free Software |
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9 Foundation, either version 3 of the License, or (at your option) any later |
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10 version. |
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11 |
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12 This program is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
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15 more details. |
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16 |
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17 You should have received a copy of the GNU General Public License along with |
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18 this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
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20 |
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21 Implements the program startup code |
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22 |
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23 */ |
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24 |
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25 #include <argp.h> |
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26 #include <errno.h> |
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27 #include <stdio.h> |
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28 #include <stdlib.h> |
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29 #include <unistd.h> |
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30 |
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31 #include "lwlink.h" |
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32 |
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33 char *program_name; |
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34 |
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35 // command line option handling |
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36 const char *argp_program_version = "LWLINK from " PACKAGE_STRING; |
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37 const char *argp_program_bug_address = PACKAGE_BUGREPORT; |
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38 |
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39 static error_t parse_opts(int key, char *arg, struct argp_state *state) |
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40 { |
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41 switch (key) |
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42 { |
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43 case 'o': |
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44 // output |
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45 outfile = arg; |
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46 break; |
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47 |
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48 case 's': |
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49 // script file |
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50 scriptfile = arg; |
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51 break; |
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52 |
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53 case 'd': |
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54 // debug |
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55 debug_level++; |
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56 break; |
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57 |
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58 case 'b': |
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59 // decb output |
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60 outformat = OUTPUT_DECB; |
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61 break; |
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62 |
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63 case 'r': |
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64 // raw binary output |
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65 outformat = OUTPUT_RAW; |
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66 break; |
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67 |
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68 case 'f': |
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69 // output format |
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70 if (!strcasecmp(arg, "decb")) |
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71 outformat = OUTPUT_DECB; |
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72 else if (!strcasecmp(arg, "raw")) |
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73 outformat = OUTPUT_RAW; |
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74 else if (!strcasecmp(arg, "lwex0") || !strcasecmp(arg, "lwex")) |
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75 outformat = OUTPUT_LWEX0; |
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76 else |
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77 { |
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78 fprintf(stderr, "Invalid output format: %s\n", arg); |
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79 exit(1); |
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80 } |
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81 break; |
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82 case ARGP_KEY_END: |
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83 // done; sanity check |
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84 if (!outfile) |
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85 outfile = "a.out"; |
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86 break; |
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87 |
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88 case 'l': |
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89 add_input_library(arg); |
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90 break; |
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91 |
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92 case 'L': |
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93 add_library_search(arg); |
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94 break; |
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95 |
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96 case 0x100: |
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97 add_section_base(arg); |
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98 break; |
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99 |
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100 case 'm': |
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101 map_file = arg; |
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102 break; |
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103 |
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104 case ARGP_KEY_ARG: |
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105 add_input_file(arg); |
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106 break; |
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107 |
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108 default: |
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109 return ARGP_ERR_UNKNOWN; |
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110 } |
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111 return 0; |
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112 } |
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113 |
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114 static struct argp_option options[] = |
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115 { |
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116 { "output", 'o', "FILE", 0, |
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117 "Output to FILE"}, |
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118 { "debug", 'd', 0, 0, |
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119 "Set debug mode"}, |
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120 { "format", 'f', "TYPE", 0, |
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121 "Select output format: decb, raw, lwex"}, |
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122 { "decb", 'b', 0, 0, |
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123 "Generate DECB .bin format output, equivalent of --format=decb"}, |
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124 { "raw", 'r', 0, 0, |
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125 "Generate raw binary format output, equivalent of --format=raw"}, |
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126 { "script", 's', "FILE", 0, |
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127 "Specify the linking script (overrides the built in defaults)"}, |
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128 { "library", 'l', "LIBSPEC", 0, |
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129 "Read library libLIBSPEC.a from the search path" }, |
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130 { "library-path", 'L', "DIR", 0, |
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131 "Add DIR to the library search path" }, |
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132 { "section-base", 0x100, "SECT=BASE", 0, |
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133 "Load section SECT at BASE" }, |
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134 { "map", 'm', "FILE", 0, |
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135 "Output informaiton about the link" }, |
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136 { 0 } |
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137 }; |
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138 |
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139 static struct argp argp = |
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140 { |
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141 options, |
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142 parse_opts, |
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143 "<input file> ...", |
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144 "LWLINK, a HD6309 and MC6809 cross-linker" |
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145 }; |
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146 |
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147 extern void read_files(void); |
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148 extern void setup_script(void); |
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149 extern void resolve_files(void); |
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150 extern void resolve_sections(void); |
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151 extern void resolve_references(void); |
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152 extern void do_output(void); |
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153 extern void display_map(void); |
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154 |
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155 // main function; parse command line, set up assembler state, and run the |
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156 // assembler on the first file |
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157 int main(int argc, char **argv) |
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158 { |
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159 program_name = argv[0]; |
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160 |
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161 argp_parse(&argp, argc, argv, 0, 0, NULL); |
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162 if (ninputfiles == 0) |
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163 { |
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164 fprintf(stderr, "No input files\n"); |
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165 exit(1); |
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166 } |
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167 |
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168 unlink(outfile); |
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169 |
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170 // handle the linker script |
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171 setup_script(); |
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172 |
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173 // read the input files |
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174 read_files(); |
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175 |
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176 // trace unresolved references and determine which non-forced |
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177 // objects must be included |
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178 resolve_files(); |
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179 |
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180 // resolve section bases and section order |
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181 resolve_sections(); |
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182 |
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183 // resolve incomplete references |
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184 resolve_references(); |
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185 |
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186 // do the actual output |
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187 do_output(); |
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188 |
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189 // display/output the link map |
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190 if (map_file) |
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191 display_map(); |
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192 |
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193 exit(0); |
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194 } |