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annotate lwlink/main.c @ 370:8764142b3192

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Convert internal error/warning handling framework to a new unified system Replace the ad hoc error and warning handling with a new system that codifies the errors with specific codes. This makes it possible in the future for error numbers to be used for testing and other purposes. It also makes sure the error strings themselves are consistent. Thanks to Erik G <erik@6809.org> for the patch.
author William Astle <lost@l-w.ca>
date Mon, 22 Jun 2015 18:49:38 -0600
parents 4130ffdeb5c8
children 221b5f58d8ad
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
0
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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 <errno.h>
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26 #include <stdio.h>
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27 #include <stdlib.h>
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28 #include <unistd.h>
2
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29 #include <string.h>
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30
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31 #include <lw_cmdline.h>
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32 #include <lw_version.h>
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33
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34 #include "lwlink.h"
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35
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36 char *program_name;
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37
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38 // command line option handling
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39 #define PROGVER "lwlink from " PACKAGE_STRING
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40
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41 static int parse_opts(int key, char *arg, void *state)
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42 {
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43 switch (key)
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44 {
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45 case 'o':
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46 // output
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47 outfile = arg;
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48 break;
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49
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50 case 's':
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51 // script file
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52 scriptfile = arg;
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53 break;
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54
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55 case 'd':
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56 // debug
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57 debug_level++;
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58 break;
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59
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60 case 'e':
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61 // entry symbol
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62 entrysym = arg;
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63 break;
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64
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65 case 'b':
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66 // decb output
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67 outformat = OUTPUT_DECB;
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68 break;
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69
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70 case 'r':
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71 // raw binary output
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72 outformat = OUTPUT_RAW;
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73 break;
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74
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75 case 'f':
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76 // output format
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77 if (!strcasecmp(arg, "decb"))
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78 outformat = OUTPUT_DECB;
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79 else if (!strcasecmp(arg, "raw"))
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80 outformat = OUTPUT_RAW;
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81 else if (!strcasecmp(arg, "lwex0") || !strcasecmp(arg, "lwex"))
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82 outformat = OUTPUT_LWEX0;
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83 else if (!strcasecmp(arg, "os9"))
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84 outformat = OUTPUT_OS9;
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85 else if (!strcasecmp(arg, "srec"))
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86 outformat = OUTPUT_SREC;
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87 else
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88 {
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89 fprintf(stderr, "Invalid output format: %s\n", arg);
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90 exit(1);
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91 }
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92 break;
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93 case lw_cmdline_key_end:
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94 // done; sanity check
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95 if (!outfile)
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96 outfile = "a.out";
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97 break;
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98
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99 case 'l':
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100 add_input_library(arg);
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101 break;
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102
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103 case 'L':
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104 add_library_search(arg);
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105 break;
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106
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107 case 0x100:
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108 add_section_base(arg);
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109 break;
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110
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111 case 0x101:
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112 sysroot = arg;
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113 break;
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114
0
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115 case 'm':
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116 map_file = arg;
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117 break;
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118
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119 case lw_cmdline_key_arg:
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120 add_input_file(arg);
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121 break;
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122
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123 default:
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124 return lw_cmdline_err_unknown;
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125 }
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126 return 0;
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127 }
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128
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129 static struct lw_cmdline_options options[] =
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130 {
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131 { "output", 'o', "FILE", 0,
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132 "Output to FILE"},
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133 { "debug", 'd', 0, 0,
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134 "Set debug mode"},
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135 { "format", 'f', "TYPE", 0,
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136 "Select output format: decb, raw, lwex, os9, srec"},
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137 { "decb", 'b', 0, 0,
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138 "Generate DECB .bin format output, equivalent of --format=decb"},
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139 { "raw", 'r', 0, 0,
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140 "Generate raw binary format output, equivalent of --format=raw"},
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141 { "script", 's', "FILE", 0,
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142 "Specify the linking script (overrides the built in defaults)"},
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143 { "library", 'l', "LIBSPEC", 0,
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144 "Read library libLIBSPEC.a from the search path" },
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145 { "library-path", 'L', "DIR", 0,
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146 "Add DIR to the library search path" },
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147 { "section-base", 0x100, "SECT=BASE", 0,
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148 "Load section SECT at BASE" },
183
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149 { "entry", 'e', "SYM", 0,
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150 "Specify SYM as program entry point" },
179
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151 { "sysroot", 0x101, "DIR", 0,
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152 "Specify the path to replace an initial = with in library paths" },
0
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153 { "map", 'm', "FILE", 0,
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154 "Output informaiton about the link" },
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155 { 0 }
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156 };
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157
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158 static struct lw_cmdline_parser cmdline_parser =
0
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159 {
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160 options,
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161 parse_opts,
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162 "INPUTFILE ...",
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163 "lwlink, a HD6309 and MC6809 cross-linker",
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164 PROGVER
0
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165 };
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166
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167 extern void read_files(void);
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168 extern void setup_script(void);
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169 extern void resolve_files(void);
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170 extern void resolve_sections(void);
234
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171 extern void generate_symbols(void);
0
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172 extern void resolve_references(void);
236
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173 extern void resolve_padding(void);
0
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174 extern void do_output(void);
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175 extern void display_map(void);
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176
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177 // main function; parse command line, set up assembler state, and run the
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178 // assembler on the first file
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179 int main(int argc, char **argv)
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180 {
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181 program_name = argv[0];
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182
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183 lw_cmdline_parse(&cmdline_parser, argc, argv, 0, 0, NULL);
0
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184 if (ninputfiles == 0)
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185 {
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186 fprintf(stderr, "No input files\n");
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187 exit(1);
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188 }
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189
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190 unlink(outfile);
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191
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192 // handle the linker script
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193 setup_script();
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194
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195 // read the input files
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196 read_files();
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197
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198 // trace unresolved references and determine which non-forced
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199 // objects must be included
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200 resolve_files();
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201
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202 // resolve section bases and section order
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203 resolve_sections();
234
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204
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205 // generate symbols
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206 generate_symbols();
0
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207
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208 // resolve incomplete references
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209 resolve_references();
236
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210
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211 // resolve section padding bits
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212 resolve_padding();
0
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213
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214 // do the actual output
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215 do_output();
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216
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217 // display/output the link map
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218 if (map_file)
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219 display_map();
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220
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221 exit(0);
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222 }