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annotate lwlink/readfiles.c @ 0:2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
author | lost@l-w.ca |
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date | Wed, 19 Jan 2011 22:27:17 -0700 |
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children | 7317fbe024af |
rev | line source |
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0
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Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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1 /* |
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2 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 <argp.h> |
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26 #include <errno.h> |
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27 #include <stdio.h> |
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28 #include <stdlib.h> |
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29 #include <string.h> |
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30 |
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31 #include "lwlink.h" |
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32 #include "util.h" |
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33 |
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34 void read_lwobj16v0(fileinfo_t *fn); |
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35 void read_lwar1v(fileinfo_t *fn); |
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36 |
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37 /* |
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38 The logic of reading the entire file into memory is simple. All the symbol |
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39 names in the file are NUL terminated strings and can be used directly without |
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40 making additional copies. |
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41 */ |
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42 void read_file(fileinfo_t *fn) |
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43 { |
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44 if (!memcmp(fn -> filedata, "LWOBJ16", 8)) |
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45 { |
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46 // read v0 LWOBJ16 file |
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47 read_lwobj16v0(fn); |
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48 } |
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49 else if (!memcmp(fn -> filedata, "LWAR1V", 6)) |
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50 { |
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51 // archive file |
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52 read_lwar1v(fn); |
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53 } |
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54 else |
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55 { |
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56 fprintf(stderr, "%s: unknown file format\n", fn -> filename); |
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57 exit(1); |
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58 } |
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59 } |
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60 |
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61 void read_files(void) |
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62 { |
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63 int i; |
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64 long size; |
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65 FILE *f; |
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66 long bread; |
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67 for (i = 0; i < ninputfiles; i++) |
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68 { |
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69 if (inputfiles[i] -> islib) |
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70 { |
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71 char *tf; |
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72 int s; |
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73 int j; |
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74 |
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75 f = NULL; |
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76 |
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77 for (j = 0; j < nlibdirs; j++) |
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78 { |
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79 s = strlen(libdirs[j]) + 7 + strlen(inputfiles[i] -> filename); |
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80 tf = lw_malloc(s + 1); |
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81 sprintf(tf, "%s/lib%s.a", libdirs[j], inputfiles[i] -> filename); |
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82 f = fopen(tf, "rb"); |
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83 if (!f) |
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84 { |
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85 free(tf); |
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86 continue; |
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87 } |
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88 free(tf); |
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89 break; |
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90 } |
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91 if (!f) |
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92 { |
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93 fprintf(stderr, "Can't open library: -l%s\n", inputfiles[i] -> filename); |
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94 exit(1); |
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95 } |
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96 } |
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97 else |
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98 { |
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99 f = fopen(inputfiles[i] -> filename, "rb"); |
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100 if (!f) |
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101 { |
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102 fprintf(stderr, "Can't open file %s:", inputfiles[i] -> filename); |
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103 perror(""); |
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104 exit(1); |
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105 } |
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106 } |
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107 fseek(f, 0, SEEK_END); |
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108 size = ftell(f); |
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109 rewind(f); |
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110 |
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111 inputfiles[i] -> filedata = lw_malloc(size); |
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112 inputfiles[i] -> filesize = size; |
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113 |
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114 bread = fread(inputfiles[i] -> filedata, 1, size, f); |
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115 if (bread < size) |
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116 { |
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117 fprintf(stderr, "Short read on file %s (%ld/%ld):", inputfiles[i] -> filename, bread, size); |
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118 perror(""); |
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119 exit(1); |
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120 } |
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121 |
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122 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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123 |
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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 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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125 } |
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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 // this macro is used to bail out if we run off the end of the file data |
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129 // while parsing - it keeps the code below cleaner |
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130 #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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131 // this macro is used to refer to the current byte in the stream |
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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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132 #define CURBYTE() (fn -> filedata[cc < fn -> filesize ? cc : fn -> filesize - 1]) |
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133 // this one will leave the input pointer past the trailing 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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134 #define CURSTR() read_lwobj16v0_str(&cc, 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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135 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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136 { |
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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 int cc = *cc1; |
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138 unsigned char *fp; |
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139 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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140 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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141 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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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 *cc1 = cc; |
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144 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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145 } |
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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 // 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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147 // source other than an in-memory byte pool by adjusting the input data |
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148 // in "fn" and the above two macros |
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149 |
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150 void read_lwobj16v0(fileinfo_t *fn) |
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151 { |
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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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152 unsigned char *fp; |
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153 long cc; |
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154 section_t *s; |
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155 int 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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156 symtab_t *se; |
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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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157 |
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158 // start reading *after* the magic number |
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159 cc = 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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160 |
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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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161 // init data |
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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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162 fn -> sections = 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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163 fn -> nsections = 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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164 |
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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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165 while (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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166 { |
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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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167 // NEXTBYTE(); |
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168 // bail out if no more sections |
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169 if (!(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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170 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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171 |
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172 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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173 |
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174 // we now have a section name in 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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175 // create new section entry |
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176 fn -> sections = lw_realloc(fn -> sections, sizeof(section_t) * (fn -> nsections + 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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177 s = &(fn -> sections[fn -> nsections]); |
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178 fn -> nsections += 1; |
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179 |
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180 s -> localsyms = NULL; |
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181 s -> flags = 0; |
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182 s -> codesize = 0; |
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183 s -> name = fp; |
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184 s -> loadaddress = 0; |
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185 s -> localsyms = NULL; |
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186 s -> exportedsyms = NULL; |
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187 s -> incompletes = 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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188 s -> processed = 0; |
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189 s -> file = fn; |
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190 |
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191 // read 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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192 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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193 { |
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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 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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195 { |
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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 case 0x01: |
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197 s -> flags |= SECTION_BSS; |
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198 break; |
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199 |
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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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200 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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201 fprintf(stderr, "%s (%s): unrecognized section flag %02X\n", fn -> filename, s -> name, (int)(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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202 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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203 } |
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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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204 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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205 } |
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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 // 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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207 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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208 |
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209 // 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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210 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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211 { |
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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 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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213 |
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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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214 // 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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215 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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216 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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217 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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218 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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219 // 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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220 |
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221 // create symbol table entry |
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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 se = lw_malloc(sizeof(symtab_t)); |
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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 se -> next = s -> localsyms; |
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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 s -> localsyms = se; |
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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 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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226 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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227 } |
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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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228 // 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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229 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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230 |
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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 // 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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232 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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233 { |
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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 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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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 // 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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237 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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238 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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239 val |= (CURBYTE()); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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240 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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241 // 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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242 |
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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 // create symbol table entry |
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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 se = lw_malloc(sizeof(symtab_t)); |
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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 se -> next = s -> exportedsyms; |
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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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246 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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247 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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|
248 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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diff
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|
249 } |
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
|
250 // 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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|
251 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
|
252 |
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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253 // 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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diff
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|
254 // external references that need resolution |
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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255 while (CURBYTE()) |
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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|
256 { |
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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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257 reloc_t *rp; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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258 lw_expr_term_t *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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|
259 |
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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 // we have a reference |
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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 rp = lw_malloc(sizeof(reloc_t)); |
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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262 rp -> next = s -> incompletes; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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263 s -> incompletes = rp; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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264 rp -> offset = 0; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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diff
changeset
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265 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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266 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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267 |
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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 // 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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269 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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270 { |
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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 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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272 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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273 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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274 { |
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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 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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276 // 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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277 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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278 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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279 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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280 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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281 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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|
282 |
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
|
283 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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284 // 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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285 tt = CURBYTE() << 8; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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286 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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287 tt |= CURBYTE(); |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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288 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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|
289 // 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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290 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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291 tt -= 0x10000; |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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292 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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293 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
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|
294 |
2c24602be78f
Initial import from lwtools 3.0.1 version, with new hand built build system and file reorganization
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295 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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|
296 // external symbol reference |
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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_sym(CURSTR(), 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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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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diff
changeset
|
299 |
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
|
300 case 0x03: |
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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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parents:
diff
changeset
|
301 // internal symbol reference |
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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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302 term = lw_expr_term_create_sym(CURSTR(), 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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|
303 break; |
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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|
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 0x04: |
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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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306 // 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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307 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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|
308 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
changeset
|
309 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
|
310 |
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
|
311 case 0x05: |
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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 // 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
changeset
|
313 // 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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|
314 term = lw_expr_term_create_sym(NULL, 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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diff
changeset
|
315 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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parents:
diff
changeset
|
316 |
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
|
317 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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|
318 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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319 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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diff
changeset
|
320 } |
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
|
321 if (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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parents:
diff
changeset
|
322 { |
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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|
323 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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|
324 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
changeset
|
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
changeset
|
326 } |
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 // skip the NUL |
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
|
328 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
|
329 |
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
|
330 // 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
changeset
|
331 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
changeset
|
332 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
|
333 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
|
334 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
|
335 } |
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
|
336 // 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
|
337 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
|
338 |
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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|
339 // 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
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parents:
diff
changeset
|
340 // 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
|
341 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
|
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 s -> codesize |= 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
|
344 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
|
345 |
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 -> 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
|
347 |
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 // 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
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diff
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|
349 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
|
350 { |
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
|
351 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
|
352 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
|
353 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
|
354 } |
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
|
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 } |
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 |
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 /* |
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 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
|
360 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
|
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 The archive file format consists of the 6 byte magic number followed by a |
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 series of records as follows: |
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 |
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 - NUL terminated file name |
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 - 32 bit file length in big endian order |
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
|
367 - the file data |
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
|
368 |
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
|
369 An empty file name indicates the end of the file. |
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370 |
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371 */ |
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372 void read_lwar1v(fileinfo_t *fn) |
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373 { |
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374 unsigned long cc = 6; |
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375 unsigned long flen; |
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376 unsigned long l; |
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377 for (;;) |
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378 { |
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379 if (cc >= fn -> filesize || !(fn -> filedata[cc])) |
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380 return; |
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381 |
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382 for (l = cc; cc < fn -> filesize && fn -> filedata[cc]; cc++) |
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383 /* do nothing */ ; |
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384 |
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385 cc++; |
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386 |
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387 if (cc >= fn -> filesize) |
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388 { |
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389 fprintf(stderr, "Malformed archive file %s.\n", fn -> filename); |
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390 exit(1); |
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391 } |
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392 |
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393 if (cc + 4 > fn -> filesize) |
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394 return; |
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395 |
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396 flen = (fn -> filedata[cc++] << 24); |
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397 flen |= (fn -> filedata[cc++] << 16); |
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398 flen |= (fn -> filedata[cc++] << 8); |
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399 flen |= (fn -> filedata[cc++]); |
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400 |
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401 if (flen == 0) |
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402 return; |
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403 |
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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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404 if (cc + flen > fn -> filesize) |
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405 { |
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406 fprintf(stderr, "Malformed archive file %s.\n", fn -> filename); |
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407 exit(1); |
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408 } |
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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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409 |
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410 // add the "sub" input file |
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411 fn -> subs = lw_realloc(fn -> subs, sizeof(fileinfo_t *) * (fn -> nsubs + 1)); |
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412 fn -> subs[fn -> nsubs] = lw_malloc(sizeof(fileinfo_t)); |
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413 memset(fn -> subs[fn -> nsubs], 0, sizeof(fileinfo_t)); |
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414 fn -> subs[fn -> nsubs] -> filedata = fn -> filedata + cc; |
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415 fn -> subs[fn -> nsubs] -> filesize = flen; |
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416 fn -> subs[fn -> nsubs] -> filename = lw_strdup(fn -> filedata + l); |
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417 fn -> subs[fn -> nsubs] -> parent = fn; |
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418 fn -> subs[fn -> nsubs] -> forced = fn -> forced; |
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419 read_file(fn -> subs[fn -> nsubs]); |
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420 fn -> nsubs++; |
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421 cc += flen; |
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422 } |
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423 } |