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annotate lwlink/main.c @ 467:a6c9129e5948

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Move version header into a common direction to better reflect what it is. The version header isn't really associated with lwlib itself since that is intended to be some generic type routines that can be used by other programs. It is, however, directly associated with lwtools. Thus, it should be related to lwtools itself rather than the more generic lwlib.
author William Astle <lost@l-w.ca>
date Thu, 01 Mar 2018 21:25:51 -0700
parents b138b4005125
children 1744f2d1a821
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 <string.h>
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29
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30 #include <lw_cmdline.h>
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31
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32 #include <version.h>
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33
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34 #include "lwlink.h"
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35
386
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36 #ifdef _MSC_VER
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37 #include <lw_win.h> // windows build
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38 #else
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39 #include <unistd.h>
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40 #endif
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41
0
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42 char *program_name;
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43
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44 // command line option handling
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45 #define PROGVER "lwlink from " PACKAGE_STRING
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46
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47 static int parse_opts(int key, char *arg, void *state)
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48 {
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49 switch (key)
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50 {
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51 case 'o':
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52 // output
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53 outfile = arg;
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54 break;
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55
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56 case 's':
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57 // script file
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58 scriptfile = arg;
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59 break;
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60
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61 case 'd':
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62 // debug
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63 debug_level++;
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64 break;
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65
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66 case 'e':
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67 // entry symbol
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68 entrysym = arg;
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69 break;
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70
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71 case 'b':
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72 // decb output
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73 outformat = OUTPUT_DECB;
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74 break;
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75
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76 case 'r':
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77 // raw binary output
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78 outformat = OUTPUT_RAW;
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79 break;
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80
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81 case 'f':
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82 // output format
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83 if (!strcasecmp(arg, "decb"))
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84 outformat = OUTPUT_DECB;
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85 else if (!strcasecmp(arg, "raw"))
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86 outformat = OUTPUT_RAW;
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87 else if (!strcasecmp(arg, "lwex0") || !strcasecmp(arg, "lwex"))
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88 outformat = OUTPUT_LWEX0;
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89 else if (!strcasecmp(arg, "os9"))
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90 outformat = OUTPUT_OS9;
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91 else if (!strcasecmp(arg, "srec"))
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92 outformat = OUTPUT_SREC;
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93 else
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94 {
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95 fprintf(stderr, "Invalid output format: %s\n", arg);
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96 exit(1);
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97 }
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98 break;
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99 case lw_cmdline_key_end:
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100 // done; sanity check
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101 if (!outfile)
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102 outfile = "a.out";
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103 break;
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104
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105 case 'l':
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106 add_input_library(arg);
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107 break;
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108
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109 case 'L':
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110 add_library_search(arg);
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111 break;
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112
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113 case 0x100:
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114 add_section_base(arg);
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115 break;
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116
179
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117 case 0x101:
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118 sysroot = arg;
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119 break;
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120
0
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121 case 'm':
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122 map_file = arg;
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123 break;
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124
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125 case lw_cmdline_key_arg:
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126 add_input_file(arg);
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127 break;
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128
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129 default:
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130 return lw_cmdline_err_unknown;
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131 }
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132 return 0;
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133 }
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134
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135 static struct lw_cmdline_options options[] =
0
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136 {
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137 { "output", 'o', "FILE", 0,
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138 "Output to FILE"},
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139 { "debug", 'd', 0, 0,
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140 "Set debug mode"},
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141 { "format", 'f', "TYPE", 0,
344
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142 "Select output format: decb, raw, lwex, os9, srec"},
0
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143 { "decb", 'b', 0, 0,
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144 "Generate DECB .bin format output, equivalent of --format=decb"},
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145 { "raw", 'r', 0, 0,
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146 "Generate raw binary format output, equivalent of --format=raw"},
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147 { "script", 's', "FILE", 0,
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148 "Specify the linking script (overrides the built in defaults)"},
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149 { "library", 'l', "LIBSPEC", 0,
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150 "Read library libLIBSPEC.a from the search path" },
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151 { "library-path", 'L', "DIR", 0,
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152 "Add DIR to the library search path" },
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153 { "section-base", 0x100, "SECT=BASE", 0,
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154 "Load section SECT at BASE" },
183
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155 { "entry", 'e', "SYM", 0,
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156 "Specify SYM as program entry point" },
179
606123758641 Added --sysroot support to lwlink and the ld wrapper script
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157 { "sysroot", 0x101, "DIR", 0,
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158 "Specify the path to replace an initial = with in library paths" },
0
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159 { "map", 'm', "FILE", 0,
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160 "Output informaiton about the link" },
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161 { 0 }
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162 };
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163
8
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164 static struct lw_cmdline_parser cmdline_parser =
0
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165 {
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166 options,
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167 parse_opts,
8
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168 "INPUTFILE ...",
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169 "lwlink, a HD6309 and MC6809 cross-linker",
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170 PROGVER
0
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171 };
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172
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173 extern void read_files(void);
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174 extern void setup_script(void);
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175 extern void resolve_files(void);
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176 extern void resolve_sections(void);
234
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177 extern void generate_symbols(void);
0
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178 extern void resolve_references(void);
236
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179 extern void resolve_padding(void);
0
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180 extern void do_output(void);
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181 extern void display_map(void);
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182
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183 // main function; parse command line, set up assembler state, and run the
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184 // assembler on the first file
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185 int main(int argc, char **argv)
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186 {
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187 program_name = argv[0];
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188
441
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189 if (lw_cmdline_parse(&cmdline_parser, argc, argv, 0, 0, NULL) != 0)
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190 {
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191 // bail if parsing failed
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192 exit(1);
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193 }
0
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194 if (ninputfiles == 0)
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195 {
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196 fprintf(stderr, "No input files\n");
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197 exit(1);
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198 }
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199
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200 unlink(outfile);
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201
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202 // handle the linker script
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203 setup_script();
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204
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205 // read the input files
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206 read_files();
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207
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208 // trace unresolved references and determine which non-forced
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209 // objects must be included
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210 resolve_files();
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211
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212 // resolve section bases and section order
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213 resolve_sections();
234
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214
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215 // generate symbols
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216 generate_symbols();
0
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217
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218 // resolve incomplete references
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219 resolve_references();
236
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220
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221 // resolve section padding bits
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222 resolve_padding();
0
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223
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224 // do the actual output
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225 do_output();
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226
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227 // display/output the link map
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228 if (map_file)
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229 display_map();
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230
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231 exit(0);
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232 }