Mercurial > hg > index.cgi
annotate lwlink/readfiles.c @ 159:8967eb907324
Trap negative sizes for [rz]m[bdq] and flag error
author | lost@l-w.ca |
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date | Sun, 28 Aug 2011 14:16:45 -0600 |
parents | fc8386b13399 |
children | 606123758641 |
rev | line source |
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0
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1 /* |
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2 readfiles.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 Reads input files |
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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_alloc.h> |
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31 #include <lw_string.h> |
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32 |
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33 #include "lwlink.h" |
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34 |
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35 void read_lwobj16v0(fileinfo_t *fn); |
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36 void read_lwar1v(fileinfo_t *fn); |
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37 |
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38 /* |
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39 The logic of reading the entire file into memory is simple. All the symbol |
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40 names in the file are NUL terminated strings and can be used directly without |
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41 making additional copies. |
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42 */ |
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43 void read_file(fileinfo_t *fn) |
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44 { |
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45 if (!memcmp(fn -> filedata, "LWOBJ16", 8)) |
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46 { |
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47 // read v0 LWOBJ16 file |
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48 read_lwobj16v0(fn); |
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49 } |
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50 else if (!memcmp(fn -> filedata, "LWAR1V", 6)) |
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51 { |
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52 // archive file |
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53 read_lwar1v(fn); |
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54 } |
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55 else |
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56 { |
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57 fprintf(stderr, "%s: unknown file format\n", fn -> filename); |
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58 exit(1); |
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59 } |
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60 } |
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61 |
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62 void read_files(void) |
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63 { |
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64 int i; |
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65 long size; |
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66 FILE *f; |
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67 long bread; |
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68 for (i = 0; i < ninputfiles; i++) |
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69 { |
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70 if (inputfiles[i] -> islib) |
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71 { |
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72 char *tf; |
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73 int s; |
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74 int j; |
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75 |
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76 f = NULL; |
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77 |
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78 for (j = 0; j < nlibdirs; j++) |
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79 { |
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80 s = strlen(libdirs[j]) + 7 + strlen(inputfiles[i] -> filename); |
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81 tf = lw_alloc(s + 1); |
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82 sprintf(tf, "%s/lib%s.a", libdirs[j], inputfiles[i] -> filename); |
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83 f = fopen(tf, "rb"); |
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84 if (!f) |
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85 { |
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86 free(tf); |
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87 continue; |
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88 } |
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89 free(tf); |
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90 break; |
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91 } |
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92 if (!f) |
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93 { |
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94 fprintf(stderr, "Can't open library: -l%s\n", inputfiles[i] -> filename); |
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95 exit(1); |
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96 } |
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97 } |
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98 else |
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99 { |
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100 f = fopen(inputfiles[i] -> filename, "rb"); |
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101 if (!f) |
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102 { |
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103 fprintf(stderr, "Can't open file %s:", inputfiles[i] -> filename); |
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104 perror(""); |
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105 exit(1); |
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106 } |
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107 } |
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108 fseek(f, 0, SEEK_END); |
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109 size = ftell(f); |
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110 rewind(f); |
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111 |
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112 inputfiles[i] -> filedata = lw_alloc(size); |
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113 inputfiles[i] -> filesize = size; |
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114 |
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115 bread = fread(inputfiles[i] -> filedata, 1, size, f); |
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116 if (bread < size) |
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117 { |
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118 fprintf(stderr, "Short read on file %s (%ld/%ld):", inputfiles[i] -> filename, bread, size); |
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119 perror(""); |
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120 exit(1); |
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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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121 } |
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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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122 |
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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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123 fclose(f); |
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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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124 |
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125 read_file(inputfiles[i]); |
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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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126 } |
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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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127 } |
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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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128 |
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129 // this macro is used to bail out if we run off the end of the file data |
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130 // while parsing - it keeps the code below cleaner |
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131 #define NEXTBYTE() do { cc++; if (cc > fn -> filesize) { fprintf(stderr, "%s: invalid file format\n", fn -> filename); exit(1); } } while (0) |
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132 // this macro is used to refer to the current byte in the stream |
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133 #define CURBYTE() (fn -> filedata[cc < fn -> filesize ? cc : fn -> filesize - 1]) |
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134 // this one will leave the input pointer past the trailing NUL |
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135 #define CURSTR() read_lwobj16v0_str(&cc, fn) |
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136 unsigned char *read_lwobj16v0_str(long *cc1, fileinfo_t *fn) |
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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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137 { |
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138 int cc = *cc1; |
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139 unsigned char *fp; |
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140 fp = &CURBYTE(); |
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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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141 while (CURBYTE()) |
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142 NEXTBYTE(); |
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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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143 NEXTBYTE(); |
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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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144 *cc1 = cc; |
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145 return fp; |
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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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146 } |
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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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147 // the function below can be switched to dealing with data coming from a |
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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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148 // source other than an in-memory byte pool by adjusting the input data |
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149 // in "fn" and the above two macros |
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150 |
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151 void read_lwobj16v0(fileinfo_t *fn) |
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152 { |
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153 unsigned char *fp; |
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154 long cc; |
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155 section_t *s; |
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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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156 int val; |
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157 symtab_t *se; |
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158 |
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159 // start reading *after* the magic number |
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160 cc = 8; |
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161 |
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162 // init data |
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163 fn -> sections = NULL; |
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164 fn -> nsections = 0; |
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165 |
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166 while (1) |
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167 { |
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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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168 // NEXTBYTE(); |
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169 // bail out if no more sections |
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170 if (!(CURBYTE())) |
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171 break; |
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172 |
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173 fp = CURSTR(); |
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174 |
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175 // we now have a section name in fp |
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176 // create new section entry |
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177 fn -> sections = lw_realloc(fn -> sections, sizeof(section_t) * (fn -> nsections + 1)); |
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178 s = &(fn -> sections[fn -> nsections]); |
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179 fn -> nsections += 1; |
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180 |
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181 s -> localsyms = NULL; |
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182 s -> flags = 0; |
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183 s -> codesize = 0; |
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184 s -> name = fp; |
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185 s -> loadaddress = 0; |
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186 s -> localsyms = NULL; |
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187 s -> exportedsyms = NULL; |
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188 s -> incompletes = NULL; |
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189 s -> processed = 0; |
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190 s -> file = fn; |
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191 |
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192 // read flags |
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193 while (CURBYTE()) |
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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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194 { |
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195 switch (CURBYTE()) |
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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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196 { |
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197 case 0x01: |
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198 s -> flags |= SECTION_BSS; |
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199 break; |
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200 |
156
fc8386b13399
Added 'constant' sections to object file handling for lwasm and lwlink
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8
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201 case 0x02: |
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Added 'constant' sections to object file handling for lwasm and lwlink
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202 s -> flags |= SECTION_CONST; |
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Added 'constant' sections to object file handling for lwasm and lwlink
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203 break; |
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Added 'constant' sections to object file handling for lwasm and lwlink
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204 |
0
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205 default: |
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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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206 fprintf(stderr, "%s (%s): unrecognized section flag %02X\n", fn -> filename, s -> name, (int)(CURBYTE())); |
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207 exit(1); |
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208 } |
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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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209 NEXTBYTE(); |
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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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210 } |
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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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211 // skip NUL terminating flags |
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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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212 NEXTBYTE(); |
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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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213 |
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214 // now parse the local symbol table |
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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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215 while (CURBYTE()) |
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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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216 { |
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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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217 fp = CURSTR(); |
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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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218 |
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219 // fp is the symbol name |
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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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220 val = (CURBYTE()) << 8; |
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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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221 NEXTBYTE(); |
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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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222 val |= (CURBYTE()); |
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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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223 NEXTBYTE(); |
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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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224 // val is now the symbol value |
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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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225 |
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226 // create symbol table entry |
8
fdc11ef4115b
Switched lwlink to lw_cmdline from argp and also brought in lw_alloc and lw_string to replace util.c
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227 se = lw_alloc(sizeof(symtab_t)); |
0
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228 se -> next = s -> localsyms; |
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229 s -> localsyms = se; |
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230 se -> sym = fp; |
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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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231 se -> offset = val; |
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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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232 } |
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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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233 // skip terminating NUL |
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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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234 NEXTBYTE(); |
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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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235 |
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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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236 // now parse the exported symbol table |
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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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237 while (CURBYTE()) |
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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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238 { |
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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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239 fp = CURSTR(); |
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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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240 |
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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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241 // fp is the symbol name |
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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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242 val = (CURBYTE()) << 8; |
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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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243 NEXTBYTE(); |
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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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|
244 val |= (CURBYTE()); |
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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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245 NEXTBYTE(); |
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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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diff
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|
246 // val is now the symbol value |
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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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|
247 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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|
248 // create symbol table entry |
8
fdc11ef4115b
Switched lwlink to lw_cmdline from argp and also brought in lw_alloc and lw_string to replace util.c
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2
diff
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249 se = lw_alloc(sizeof(symtab_t)); |
0
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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250 se -> next = s -> exportedsyms; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
251 s -> exportedsyms = se; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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252 se -> sym = fp; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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253 se -> offset = val; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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254 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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255 // skip terminating NUL |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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changeset
|
256 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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|
257 |
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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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258 // now parse the incomplete references and make a list of |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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259 // external references that need resolution |
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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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260 while (CURBYTE()) |
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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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261 { |
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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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262 reloc_t *rp; |
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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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263 lw_expr_term_t *term; |
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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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264 |
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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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|
265 // we have a reference |
8
fdc11ef4115b
Switched lwlink to lw_cmdline from argp and also brought in lw_alloc and lw_string to replace util.c
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2
diff
changeset
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266 rp = lw_alloc(sizeof(reloc_t)); |
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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267 rp -> next = s -> incompletes; |
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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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268 s -> incompletes = rp; |
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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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269 rp -> offset = 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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270 rp -> expr = lw_expr_stack_create(); |
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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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271 rp -> flags = RELOC_NORM; |
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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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272 |
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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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273 // parse the expression |
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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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274 while (CURBYTE()) |
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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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275 { |
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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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276 int tt = CURBYTE(); |
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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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277 NEXTBYTE(); |
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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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278 switch (tt) |
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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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279 { |
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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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280 case 0xFF: |
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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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281 // a flag specifier |
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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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282 tt = CURBYTE(); |
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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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283 rp -> flags = tt; |
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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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284 NEXTBYTE(); |
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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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285 term = NULL; |
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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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286 break; |
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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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changeset
|
287 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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changeset
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288 case 0x01: |
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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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289 // 16 bit integer |
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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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290 tt = CURBYTE() << 8; |
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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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291 NEXTBYTE(); |
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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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292 tt |= CURBYTE(); |
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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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293 NEXTBYTE(); |
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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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diff
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294 // normalize for negatives... |
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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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295 if (tt > 0x7fff) |
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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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296 tt -= 0x10000; |
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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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297 term = lw_expr_term_create_int(tt); |
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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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298 break; |
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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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|
299 |
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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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300 case 0x02: |
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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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|
301 // external symbol reference |
2
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Clean up insane number of compiler warnings under -Wall
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0
diff
changeset
|
302 term = lw_expr_term_create_sym((char *)CURSTR(), 0); |
0
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
303 break; |
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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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diff
changeset
|
304 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
305 case 0x03: |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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|
306 // internal symbol reference |
2
7317fbe024af
Clean up insane number of compiler warnings under -Wall
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0
diff
changeset
|
307 term = lw_expr_term_create_sym((char *)CURSTR(), 1); |
0
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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308 break; |
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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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|
309 |
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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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|
310 case 0x04: |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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311 // operator |
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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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312 term = lw_expr_term_create_oper(CURBYTE()); |
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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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313 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
314 break; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
changeset
|
315 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
316 case 0x05: |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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317 // section base reference (NULL internal reference is |
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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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diff
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|
318 // the section base address |
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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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319 term = lw_expr_term_create_sym(NULL, 1); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
320 break; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
321 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
322 default: |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
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|
323 fprintf(stderr, "%s (%s): bad relocation expression (%02X)\n", fn -> filename, s -> name, tt); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
324 exit(1); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
325 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
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|
326 if (term) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
327 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
328 lw_expr_stack_push(rp -> expr, term); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
329 lw_expr_term_free(term); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
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|
330 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
331 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
332 // skip the NUL |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
333 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
334 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
335 // fetch the offset |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
336 rp -> offset = CURBYTE() << 8; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
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|
337 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
changeset
|
338 rp -> offset |= CURBYTE() & 0xff; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
339 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
340 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
341 // skip the NUL terminating the relocations |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
342 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
343 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
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|
344 // now set code location and size and verify that the file |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
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|
345 // contains data going to the end of the code (if !SECTION_BSS) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
changeset
|
346 s -> codesize = CURBYTE() << 8; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
347 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
348 s -> codesize |= CURBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
changeset
|
349 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
350 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
changeset
|
351 s -> code = &(CURBYTE()); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
352 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
353 // skip the code if we're not in a BSS section |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
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|
354 if (!(s -> flags & SECTION_BSS)) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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parents:
diff
changeset
|
355 { |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
356 int i; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
357 for (i = 0; i < s -> codesize; i++) |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
358 NEXTBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
359 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
360 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
361 } |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
362 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
363 /* |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
364 Read an archive file - this will create a "sub" record and farm out the |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
365 parsing of the sub files to the regular file parsers |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
changeset
|
366 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
lost@l-w.ca
parents:
diff
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367 The archive file format consists of the 6 byte magic number followed by a |
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368 series of records as follows: |
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369 |
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370 - NUL terminated file name |
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371 - 32 bit file length in big endian order |
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372 - the file data |
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373 |
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374 An empty file name indicates the end of the file. |
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375 |
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376 */ |
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377 void read_lwar1v(fileinfo_t *fn) |
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378 { |
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379 unsigned long cc = 6; |
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380 unsigned long flen; |
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381 unsigned long l; |
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382 for (;;) |
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383 { |
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384 if (cc >= fn -> filesize || !(fn -> filedata[cc])) |
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385 return; |
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386 |
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387 for (l = cc; cc < fn -> filesize && fn -> filedata[cc]; cc++) |
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388 /* do nothing */ ; |
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389 |
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390 cc++; |
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391 |
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392 if (cc >= fn -> filesize) |
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393 { |
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394 fprintf(stderr, "Malformed archive file %s.\n", fn -> filename); |
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395 exit(1); |
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396 } |
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397 |
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398 if (cc + 4 > fn -> filesize) |
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399 return; |
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400 |
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401 flen = (fn -> filedata[cc++] << 24); |
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402 flen |= (fn -> filedata[cc++] << 16); |
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403 flen |= (fn -> filedata[cc++] << 8); |
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404 flen |= (fn -> filedata[cc++]); |
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405 |
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406 if (flen == 0) |
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407 return; |
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408 |
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409 if (cc + flen > fn -> filesize) |
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410 { |
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411 fprintf(stderr, "Malformed archive file %s.\n", fn -> filename); |
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412 exit(1); |
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413 } |
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414 |
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415 // add the "sub" input file |
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416 fn -> subs = lw_realloc(fn -> subs, sizeof(fileinfo_t *) * (fn -> nsubs + 1)); |
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417 fn -> subs[fn -> nsubs] = lw_alloc(sizeof(fileinfo_t)); |
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418 memset(fn -> subs[fn -> nsubs], 0, sizeof(fileinfo_t)); |
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419 fn -> subs[fn -> nsubs] -> filedata = fn -> filedata + cc; |
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420 fn -> subs[fn -> nsubs] -> filesize = flen; |
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421 fn -> subs[fn -> nsubs] -> filename = lw_strdup((char *)(fn -> filedata + l)); |
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422 fn -> subs[fn -> nsubs] -> parent = fn; |
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423 fn -> subs[fn -> nsubs] -> forced = fn -> forced; |
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424 read_file(fn -> subs[fn -> nsubs]); |
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425 fn -> nsubs++; |
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426 cc += flen; |
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427 } |
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428 } |