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annotate lwlink/lwlink.h @ 465:7370a67caf7e

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Fix really dumb code generation error The previous commit caused some unforuntate code generation errors. Fixed those. Also made the heuristic for guessing that 8 bit is okay for PCR allow a fudge factor so that some corner cases are much less likely to explode.
author William Astle <lost@l-w.ca>
date Wed, 28 Feb 2018 23:31:17 -0700
parents 221b5f58d8ad
children 1744f2d1a821
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2 lwlink.h
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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 Contains the main defs used by the linker
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21 */
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24 #ifndef __lwlink_h_seen__
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25 #define __lwlink_h_seen__
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26
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27 #include "expr.h"
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28
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29 #define OUTPUT_DECB 0 // DECB multirecord format
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30 #define OUTPUT_RAW 1 // raw sequence of bytes
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31 #define OUTPUT_LWEX0 2 // LWOS LWEX binary version 0
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32 #define OUTPUT_OS9 3 // OS9 object code module
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33 #define OUTPUT_SREC 4 // motorola SREC format
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34
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35 typedef struct symtab_s symtab_t;
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36 struct symtab_s
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37 {
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38 unsigned char *sym; // symbol name
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39 int offset; // local offset
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40 // int realval; // resolved value
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41 symtab_t *next; // next symbol
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42 };
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43
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44 #define RELOC_NORM 0 // all default (16 bit)
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45 #define RELOC_8BIT 1 // only use the low 8 bits for the reloc
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46 typedef struct reloc_s reloc_t;
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47 struct reloc_s
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48 {
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49 int offset; // where in the section
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50 int flags; // flags for the relocation
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51 lw_expr_stack_t *expr; // the expression to calculate it
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52 reloc_t *next; // ptr to next relocation
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53 };
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54
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55 typedef struct fileinfo_s fileinfo_t;
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56
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57 #define SECTION_BSS 1
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58 #define SECTION_CONST 2
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59 typedef struct
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60 {
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61 unsigned char *name; // name of the section
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62 int flags; // section flags
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63 int codesize; // size of the code
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64 unsigned char *code; // pointer to the code
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65 int loadaddress; // the actual load address of the section
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66 int processed; // was the section processed yet?
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67
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68 symtab_t *localsyms; // local symbol table
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69 symtab_t *exportedsyms; // exported symbols table
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70
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71 reloc_t *incompletes; // table of incomplete references
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72
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73 fileinfo_t *file; // the file we are in
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74
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75 int aftersize; // add this many bytes after section on output
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76 unsigned char *afterbytes; // add these bytes after section on output
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77 } section_t;
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78
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79 struct fileinfo_s
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80 {
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81 char *filename;
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82 unsigned char *filedata;
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83 int filesize;
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84 section_t *sections;
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85 int nsections;
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86 int islib; // set to true if the file is a "-l" option
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87
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88 int forced; // set to true if the file is a "forced" include
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89
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90 // "sub" files (like in archives or libraries)
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91 int nsubs;
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92 fileinfo_t **subs;
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93 fileinfo_t *parent;
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94 };
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95
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96 struct section_list
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97 {
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98 section_t *ptr; // ptr to section structure
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99 int forceaddr; // was this force to an address by the link script?
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100 };
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101
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102
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103 typedef struct sectopt_s sectopt_t;
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104 struct sectopt_s
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105 {
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106 char *name; // section name
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107 int aftersize; // number of bytes to append to section
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108 unsigned char *afterbytes; // the bytes to store after the section
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109 sectopt_t *next; // next section option
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110 };
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111
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112 #ifndef __link_c_seen__
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113 extern struct section_list *sectlist;
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114 extern int nsects;
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115 extern sectopt_t *section_opts;
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116 #endif
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118
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119 #ifndef __lwlink_c_seen__
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120
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121 extern int debug_level;
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122 extern int outformat;
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123 extern char *outfile;
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124 extern int ninputfiles;
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125 extern fileinfo_t **inputfiles;
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126 extern char *scriptfile;
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127 extern char *entrysym;
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128
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129 extern int nlibdirs;
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130 extern char **libdirs;
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131
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132 extern int nscriptls;
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133 extern char **scriptls;
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134
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135 extern int symerr;
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136
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137 extern char *map_file;
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138
179
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139 extern char *sysroot;
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140
0
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141 #define __lwlink_E__ extern
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142 #else
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143 #define __lwlink_E__
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144 #endif // __lwlink_c_seen__
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145
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146 __lwlink_E__ void add_input_file(char *fn);
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147 __lwlink_E__ void add_input_library(char *fn);
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148 __lwlink_E__ void add_library_search(char *fn);
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149 __lwlink_E__ void add_section_base(char *fn);
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150 __lwlink_E__ char *sanitize_symbol(char *sym);
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151
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152 #undef __lwlink_E__
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153
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154 struct scriptline_s
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155 {
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156 char *sectname; // name of section, NULL for wildcard
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157 int loadat; // address to load at (or -1)
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158 int noflags; // flags to NOT have
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159 int yesflags; // flags to HAVE
315
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160 int growsdown; // sections are placed descending in memory
0
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161 };
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162
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163 typedef struct
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164 {
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165 int nlines; // number of lines in the script
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166 struct scriptline_s *lines; // the parsed script lines (section)
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167 int padsize; // the size to pad to, -1 for none
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168 char *execsym; // entry point symbol
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169 int execaddr; // execution address (entry point)
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170 int stacksize; // stack size
148
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171 int modtype; // module type
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172 int modlang; // module language
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173 int modattr; // module attributes
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174 int modrev; // module revision
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175 int edition; // module edition
148
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176 char *name; // module name
234
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177 char *basesympat; // pattern for section base symbol (%s for section name)
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178 char *lensympat; // pattern for section length symbol (%s for section name)
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179 } linkscript_t;
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180
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181 #ifndef __script_c_seen__
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182 extern linkscript_t linkscript;
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183 #endif
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184
234
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185 typedef struct symlist_s symlist_t;
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186
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187 struct symlist_s
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188 {
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189 char *sym;
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190 int val;
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191 symlist_t *next;
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192
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193 };
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194
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195 extern symlist_t *symlist;
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196
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197 #endif //__lwlink_h_seen__